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1.
Int. j. morphol ; 42(2): 332-340, abr. 2024. ilus
Article in English | LILACS | ID: biblio-1558131

ABSTRACT

SUMMARY: Systemic inflammatory response syndrome (SIRS) is a potentially fatal reaction to various forms of tissue damage and infections that cause damage to various organs. Furthermore, the brain is damaged earlier than other organs, resulting in diffuse brain dysfunction. The central clinical symptom of SIRS is delirium and emotional changes are involved in disease development. Although the amygdala is known to play a major role, the mechanisms underlying emotional changes in the early stages of SIRS have not been elucidated. Therefore, changes to dopamine levels in the amygdala were observed using an in vivo model of lipopolysaccharide (LPS)- induced SIRS to clarify the biochemical mechanisms activated in the early stages of SIRS. Extracellular dopamine was collected from the amygdala of free moving rats via microdialysis and then analyzed by high-performance liquid chromatography. In addition, emotional changes were assessed with the open field and sucrose preference tests. In the LPS group, dopamine release in the amygdala increased remarkably immediately after LPS administration, peaking at 120 min. Thereafter, dopamine release temporarily decreased, but then significantly increased again after 180 min. The present results suggest that diffuse brain dysfunction in the early stages of SIRS may involve altered dopamine levels in the amygdala.


El síndrome de respuesta inflamatoria sistémica (SRIS) es una reacción potencialmente fatal a diversas formas de daño tisular e infecciones que causan injuria a varios órganos. Además, el cerebro se daña antes que otros órganos, lo que provoca una disfunción cerebral difusa. El síntoma clínico central del SIRS es el delirio y los cambios emocionales están involucrados en el desarrollo de la enfermedad. Aunque se sabe que la amígdala desempeña un papel importante, no se han dilucidado los mecanismos que subyacen a los cambios emocionales en las primeras etapas del SRIS. Por lo tanto, en el estudio se provocaron cambios en los niveles de dopamina en la amígdala utilizando un modelo in vivo de SRIS inducido por lipopolisacáridos (LPS) para dilucidar los mecanismos bioquímicos activados en las primeras etapas del SRIS. La dopamina extracelular se recogió de la amígdala de ratas en movimiento libre mediante microdiálisis y luego se analizó mediante cromatografía líquida de alta resolución. Además, se evaluaron los cambios emocionales con las pruebas de campo abierto y de preferencia de sacarosa. En el grupo de LPS, la liberación de dopamina en la amígdala aumentó de manera notable inmediatamente después de la administración de LPS, alcanzando un máximo a los 120 minutos. A partir de entonces, la liberación de dopamina disminuyó temporalmente, pero luego volvió a aumentar significativamente después de 180 min. Los resultadosactuales sugieren que la disfunción cerebral difusa en las primeras etapas del SIRS puede implicar niveles alterados de dopamina en la amígdala.


Subject(s)
Animals , Male , Rats , Dopamine , Systemic Inflammatory Response Syndrome , Amygdala , Lipopolysaccharides/toxicity , Cytokines , Rats, Sprague-Dawley , Systemic Inflammatory Response Syndrome/chemically induced
2.
Rev. psiquiatr. Urug ; 88(1): 5-14, set. 2024. ilus
Article in Spanish | LILACS, UY-BNMED, BNUY | ID: biblio-1571460

ABSTRACT

Todas las drogas de abuso tienen en común la activación del sistema cerebral del placer. Los análisis imagenológicos han arrojado resultados de cambios estructurales en el cerebro de adictos a la cocaína e imágenes cerebrales en sujetos adictos muestran una disminución de la producción de dopamina que lleva a que la acción esté notoriamente amortiguada en relación con controles. Los estudios estructurales han mostrado reducciones de volumen de la sustancia gris y alteraciones circuitales de la sustancia blanca en el lóbulo frontal de adictos. La transición del uso recreativo a la adicción se asocia con cambios en la función de las neuronas que se acumulan con la administración repetida. La exposición crónica a la cocaína provoca aumentos de la arborización y de la densidad de las espinas dendríticas. El aumento de capacidad sináptica, ante el estímulo subcortical de una nueva presencia de la droga, toma el control de las funciones ejecutivas, «secuestrando¼ la capacidad de la voluntad consciente.


The activation of of the brain pleasure system is common to all abuse drugs. Imaging analyses have shown structural changes in the brain of cocaine addicts and a reduction of dopamine production which causes attenuation of its action when compared to control subjects. Structural studies in these patients show gray matter reduction and circuitry changes in frontal lobe white matter. Transition from recreational use to addiction is associated with changes in neuronal function which accumulate with repeated administration. Chronic exposure to cocaine leads to an increase in arborization and density of dendritic spines. When faced with new subcortical presence of the drug, the increase of synaptic capacity takes control of executive functions, "sequestering" the capacity for conscious will.


Subject(s)
Humans , Volition/drug effects , Dopamine/chemistry , Cocaine/adverse effects , Substance-Related Disorders , Cerebrum/drug effects , Pleasure/drug effects , Neurons/drug effects
3.
Arch. argent. pediatr ; 121(4): e202202674, ago. 2023.
Article in English, Spanish | LILACS, BINACIS | ID: biblio-1442702

ABSTRACT

Las plataformas digitales de comunicación en red revolucionaron el modo de comunicarnos, informarnos y entretenernos; impactaron principalmente en las nuevas generaciones. La pandemia incrementó los patrones de consumo en todas las edades y sus consecuencias: sedentarismo; obesidad; alteraciones del sueño, psicológicas, cognitivas, de la memoria/atención, del rendimiento académico; comportamientos problemáticos y riesgos de ciberacoso. La actividad de las nuevas generaciones en TikTok ­una plataforma donde pueden crear, visualizar, compartir videos y retos virales­ tiene impacto en su comportamiento. Sus publicaciones generan aprobaciones, comentarios y seguidores; esto estimula el circuito dopaminérgico de recompensa, que es la base de los comportamientos adictivos. El pediatra debe conocer estas conductas para recomendar buenas prácticas de uso. Esta revisión narrativa, basada en bibliografía de PubMed Central, SciELO, recomendaciones nacionales e internacionales, tiene como objetivo informar y actualizar a los profesionales sobre la plataforma, sus características y sus recomendaciones de uso seguro.


Network communication digital platforms have revolutionized the way we communicate, get information, and entertain ourselves; they have had a major impact on the new generations. The pandemic has increased consumption patterns at all ages and its consequences: a sedentary lifestyle, obesity, sleep, psychological, cognitive, memory/attention, and academic performance disorders, problematic behaviors, and risks of cyberbullying. The activity of the new generations on TikTok ­a platform that allows them to create, view, share videos and viral challenges­ has affected their behavior. Their posts lead to likes, comments, and followers; this stimulates the dopaminergic reward system, which is the basis of addictive behaviors. Pediatricians should be aware of these behaviors in order to recommend good practices. The objective of this narrative review, based on the bibliography from PubMed Central, SciELO, national and international recommendations, is to provide information and an update to health care providers on TikTok, its characteristics, and the recommendations for safe use.


Subject(s)
Humans , Child , Adolescent , Behavior, Addictive , Social Media , Academic Performance , Dopamine , Communication
4.
Journal of Integrative Medicine ; (12): 205-214, 2023.
Article in English | WPRIM | ID: wpr-971654

ABSTRACT

OBJECTIVE@#Anxiety is one of the most common symptoms associated with autistic spectrum disorder. The essential oil of Cananga odorata (Lam.) Hook. f. & Thomson, usually known as ylang-ylang oil (YYO), is often used in aromatherapy as a mood-regulating agent, sedative, or hypotensive agent. In the present study, the effects and mechanisms of YYO in alleviating anxiety, social and cognitive behaviors in autism-like rats were investigated.@*METHODS@#The prenatal valproic acid (VPA) model was used to induce autism-like behaviors in offspring rats. The effectiveness of prenatal sodium valproate treatment (600 mg/kg) on offspring was shown by postnatal growth observation, and negative geotaxis, olfactory discrimination and Morris water maze (MWM) tests. Then three treatment groups were formed with varying exposure to atomized YYO to explore the effects of YYO on the anxiety, social and cognitive behaviors of the autistic-like offspring through the elevated plus-maze test, three-chamber social test, and MWM test. Finally, the monoamine neurotransmitters, including serotonin, dopamine and their metabolites, in the hippocampus and prefrontal cortex (PFC) of the rats were measured using a high-performance liquid chromatography.@*RESULTS@#Offspring of VPA exposure rats showed autism-like behaviors. In the VPA offspring, medium-dose YYO exposure significantly elevated the time and entries into the open arms in the elevated plus-maze test, while low-dose YYO exposure significantly enhanced the social interaction time with the stranger rat in session 1 of the three-chamber social test. VPA offspring treated with YYO exposure used less time to reach the platform in the navigation test of the MWM test. YYO exposure significantly elevated the metabolism of serotonin and dopamine in the PFC of VPA offspring.@*CONCLUSION@#YYO exposure showed the effects in alleviating anxiety and improving cognitive and social abilities in the offspring of VPA exposure rats. The role of YYO was related to the regulation of the metabolism of serotonin and dopamine. Please cite this article as: Zhang N, Wang ST, Yao L. Inhalation of Cananga odorata essential oil relieves anxiety behaviors in autism-like rats via regulation of serotonin and dopamine metabolism. J Integr Med. 2023; 21(2): 205-214.


Subject(s)
Pregnancy , Female , Rats , Animals , Autistic Disorder/drug therapy , Oils, Volatile/therapeutic use , Serotonin/metabolism , Cananga/metabolism , Dopamine , Anxiety/drug therapy , Valproic Acid/pharmacology , Plant Oils , Disease Models, Animal
5.
Zhongguo zhenjiu ; (12): 191-196, 2023.
Article in Chinese | WPRIM | ID: wpr-969970

ABSTRACT

OBJECTIVE@#To investigate the effects of umbilical moxibustion therapy on phobic behavior and the contents of norepinephrine (NE), dopamine (DA) and 5-hydroxytryptamine (5-HT) in different brain regions of the stress-model rats and explore the potential mechanism of umbilical moxibustion on phobic behavior.@*METHODS@#Among 50 Wistar male rats, 45 rates were selected and randomly divided into a control group, a model group and an umbilical moxibustion group, 15 rats in each one; and the rest 5 rats were used for preparing the model of electric shock. The bystander electroshock method was adopted to prepare phobic stress model in the model group and the umbilical moxibustion group. After modeling, the intervention with umbilical moxibustion started in the umbilical moxibustion group, in which, the ginger-isolated moxibustion was applied at "Shenque" (CV 8), once daily, 2 cones for 20 min each time, for consecutively 21 days. After modeling and intervention completed, the rats in each group were subjected to the open field test to evaluate the state of fear. After intervention, the Morris water maze test and fear conditioning test were performed to evaluate the changes in learning and memory ability and the state of fear. Using high performance liquid chromatography (HPLC), the contents of NE, DA and 5-HT in the hippocampus, prefrontal cortex and hypothalamus were determined.@*RESULTS@#Compared with the control group, the horizontal and vertical activity scores were lower (P<0.01), the number of stool particles was increased (P<0.01), the escape latency was prolonged (P<0.01), the times of target quadrant were reduced (P<0.01), and the freezing time was prolonged (P<0.05) in the rats of the model group. The horizontal and vertical activity scores were increased (P<0.05), the number of stool particles was reduced (P<0.05), the escape latency was shortened (P<0.05, P<0.01), the times of target quadrant were increased (P<0.05), and the freezing time was shortened (P<0.05) in the rats of the umbilical moxibustion group when compared with the model group. The trend search strategy was adopted in the control group and the umbilical moxibustion group, while the random search strategy was used in rats of the model group. Compared with the control group, the contents of NE, DA and 5-HT in the hippocampus, prefrontal cortex and hypothalamus were reduced (P<0.01) in the model group. In the umbilical moxibustion group, the contents of NE, DA and 5-HT in the hippocampus, prefrontal cortex and hypothalamus were increased (P<0.05, P<0.01) when compared with the model group.@*CONCLUSION@#Umbilical moxibustion can effectively relieve the state of fear and learning and memory impairment of phobic stress model rats, which may be related to the up-regulation of contents of brain neurotransmitters, i.e. NE, DA, and 5-HT.


Subject(s)
Rats , Male , Animals , Moxibustion , Rats, Sprague-Dawley , Rats, Wistar , Serotonin , Hippocampus , Dopamine , Norepinephrine , Neurotransmitter Agents
6.
Zhongguo zhenjiu ; (12): 800-806, 2023.
Article in Chinese | WPRIM | ID: wpr-980798

ABSTRACT

OBJECTIVE@#To observe the effects of moxa smoke through olfactory pathway on learning and memory ability in rapid aging (SAMP8) mice, and to explore the action pathway of moxa smoke.@*METHODS@#Forty-eight six-month-old male SAMP8 mice were randomly divided into a model group, an olfactory dysfunction group, a moxa smoke group and an olfactory dysfunction + moxa smoke group, with 12 mice in each group. Twelve age-matched male SAMR1 mice were used as the blank group. The olfactory dysfunction model was induced in the olfactory dysfunction group and the olfactory dysfunction + moxa smoke group by intraperitoneal injection of 3-methylindole (3-MI) with 300 mg/kg, and the moxa smoke group and the olfactory dysfunction + moxa smoke group were intervened with moxa smoke at a concentration of 10-15 mg/m3 for 30 min per day, with a total of 6 interventions per week. After 6 weeks, the emotion and cognitive function of mice was tested by open field test and Morris water maze test, and the neuronal morphology in the CAI area of the hippocampus was observed by HE staining. The contents of neurotransmitters (glutamic acid [Glu], gamma-aminobutyric acid [GABA], dopamine [DA], and 5-hydroxytryptamine [5-HT]) in hippocampal tissue of mice were detected by ELISA.@*RESULTS@#The mice in the blank group, the model group and the moxa smoke group could find the buried food pellets within 300 s, while the mice in the olfactory dysfunction group and the olfactory dysfunction + moxa smoke group took more than 300 s to find them. Compared with the blank group, the model group had increased vertical and horizontal movements (P<0.05) and reduced central area residence time (P<0.05) in the open field test, prolonged mean escape latency on days 1-4 (P<0.05), and decreased search time, swimming distance and swimming distance ratio in the target quadrant of the Morris water maze test, and decreased GABA, DA and 5-HT contents (P<0.05, P<0.01) and increased Glu content (P<0.05) in hippocampal tissue. Compared with the model group, the olfactory dysfunction group had increased vertical movements (P<0.05), reduced central area residence time (P<0.05), and increased DA content in hippocampal tissue (P<0.05); the olfactory dysfunction + moxa smoke group had shortened mean escape latency on days 3 and 4 of the Morris water maze test (P<0.05) and increased DA content in hippocampal tissue (P<0.05); the moxa smoke group had prolonged search time in the target quadrant (P<0.05) and increased swimming distance ratio, and increased DA and 5-HT contents in hippocampal tissue (P<0.05, P<0.01) and decreased Glu content in hippocampal tissue (P<0.05). Compared with the olfactory dysfunction group, the olfactory dysfunction + moxa smoke group showed a shortened mean escape latency on day 4 of the Morris water maze test (P<0.05). Compared with the moxa smoke group, the olfactory dysfunction + moxa smoke group had a decreased 5-HT content in the hippocampus (P<0.05). Compared with the blank group, the model group showed a reduced number of neurons in the CA1 area of the hippocampus with a disordered arrangement; the olfactory dysfunction group had similar neuronal morphology in the CA1 area of the hippocampus to the model group. Compared with the model group, the moxa smoke group had an increased number of neurons in the CA1 area of the hippocampus that were more densely packed. Compared with the moxa smoke group, the olfactory dysfunction + moxa smoke group had a reduced number of neurons in the CA1 area of the hippocampus, with the extent between that of the moxa smoke group and the olfactory dysfunction group.@*CONCLUSION@#The moxa smoke could regulate the contents of neurotransmitters Glu, DA and 5-HT in hippocampal tissue through olfactory pathway to improve the learning and memory ability of SAMP8 mice, and the olfactory is not the only effective pathway.


Subject(s)
Male , Animals , Mice , Olfactory Pathways , Smoke/adverse effects , Serotonin , Aging , Dopamine , Olfaction Disorders/etiology
7.
Sheng Li Xue Bao ; (6): 248-254, 2023.
Article in Chinese | WPRIM | ID: wpr-981002

ABSTRACT

Trace amines are endogenous molecules distributed in the central nervous system and peripheral tissues that resemble common biogenic amines in terms of subcellular localization, chemical structure, and metabolism. Trace amine-associated receptor (TAAR) is a kind of evolutionarily conserved G-protein-coupled receptors in vertebrates, in which TAAR1 is a functional regulator of monoamine transmitters such as dopamine and serotonin. TAAR1 is widely considered as a potential therapeutic target for schizophrenia, depression and drug addiction. Moreover, TAAR1 is also expressed in peripheral tissues. The homeostasis imbalance of trace aminergic system can induce over-activation of peripheral immune system and central immune inflammatory response. TAAR1 modulators are becoming potential emerging drugs for the treatment of immune-related illnesses, because they may play a major role in the activation or modulation of immune response.


Subject(s)
Animals , Humans , Receptors, G-Protein-Coupled/metabolism , Biogenic Amines , Dopamine , Substance-Related Disorders
8.
Chinese Journal of Biotechnology ; (12): 1773-1788, 2023.
Article in Chinese | WPRIM | ID: wpr-981169

ABSTRACT

A triple-transgenic (tyrosine hydroxylase/dopamine decarboxylase/GTP cyclohydrolase 1, TH/DDC/GCH1) bone marrow mesenchymal stem cell line (BMSCs) capable of stably synthesizing dopamine (DA) transmitters were established to provide experimental evidence for the clinical treatment of Parkinson's disease (PD) by using this cell line. The DA-BMSCs cell line that could stably synthesize and secrete DA transmitters was established by using the triple transgenic recombinant lentivirus. The triple transgenes (TH/DDC/GCH1) expression in DA-BMSCs was detected using reverse transcription-polymerase chain reaction (RT-PCR), Western blotting, and immunofluorescence. Moreover, the secretion of DA was tested by enzyme-linked immunosorbent assay (ELISA) and high-performance liquid chromatography (HPLC). Chromosome G-banding analysis was used to detect the genetic stability of DA-BMSCs. Subsequently, the DA-BMSCs were stereotactically transplanted into the right medial forebrain bundle (MFB) of Parkinson's rat models to detect their survival and differentiation in the intracerebral microenvironment of PD rats. Apomorphine (APO)-induced rotation test was used to detect the improvement of motor dysfunction in PD rat models with cell transplantation. The TH, DDC and GCH1 were expressed stably and efficiently in the DA-BMSCs cell line, but not expressed in the normal rat BMSCs. The concentration of DA in the cell culture supernatant of the triple transgenic group (DA-BMSCs) and the LV-TH group was extremely significantly higher than that of the standard BMSCs control group (P < 0.000 1). After passage, DA-BMSCs stably produced DA. Karyotype G-banding analysis showed that the vast majority of DA-BMSCs maintained normal diploid karyotypes (94.5%). Moreover, after 4 weeks of transplantation into the brain of PD rats, DA-BMSCs significantly improved the movement disorder of PD rat models, survived in a large amount in the brain microenvironment, differentiated into TH-positive and GFAP-positive cells, and upregulated the DA level in the injured area of the brain. The triple-transgenic DA-BMSCs cell line that stably produced DA, survived in large numbers, and differentiated in the rat brain was successfully established, laying a foundation for the treatment of PD using engineered culture and transplantation of DA-BMSCs.


Subject(s)
Rats , Animals , Dopamine , Parkinson Disease/metabolism , Mesenchymal Stem Cells/metabolism , Cell Line , Brain/metabolism , Cell Differentiation , Mesenchymal Stem Cell Transplantation
9.
Neuroscience Bulletin ; (6): 1411-1425, 2023.
Article in English | WPRIM | ID: wpr-1010621

ABSTRACT

L-dopa (l-3,4-dihydroxyphenylalanine)-induced dyskinesia (LID) is a debilitating complication of dopamine replacement therapy for Parkinson's disease. The potential contribution of striatal D2 receptor (D2R)-positive neurons and downstream circuits in the pathophysiology of LID remains unclear. In this study, we investigated the role of striatal D2R+ neurons and downstream globus pallidus externa (GPe) neurons in a rat model of LID. Intrastriatal administration of raclopride, a D2R antagonist, significantly inhibited dyskinetic behavior, while intrastriatal administration of pramipexole, a D2-like receptor agonist, yielded aggravation of dyskinesia in LID rats. Fiber photometry revealed the overinhibition of striatal D2R+ neurons and hyperactivity of downstream GPe neurons during the dyskinetic phase of LID rats. In contrast, the striatal D2R+ neurons showed intermittent synchronized overactivity in the decay phase of dyskinesia. Consistent with the above findings, optogenetic activation of striatal D2R+ neurons or their projections in the GPe was adequate to suppress most of the dyskinetic behaviors of LID rats. Our data demonstrate that the aberrant activity of striatal D2R+ neurons and downstream GPe neurons is a decisive mechanism mediating dyskinetic symptoms in LID rats.


Subject(s)
Rats , Animals , Levodopa/toxicity , Dopamine , Parkinsonian Disorders/drug therapy , Oxidopamine , Dyskinesia, Drug-Induced , Corpus Striatum/metabolism , Neurons/metabolism , Receptors, Dopamine D2/metabolism , Antiparkinson Agents/toxicity
10.
Neuroscience Bulletin ; (6): 1655-1668, 2023.
Article in English | WPRIM | ID: wpr-1010624

ABSTRACT

Opioid use disorder (OUD) has become a considerable global public health challenge; however, potential medications for the management of OUD that are effective, safe, and nonaddictive are not available. Accumulating preclinical evidence indicates that antagonists of the dopamine D3 receptor (D3R) have effects on addiction in different animal models. We have previously reported that YQA14, a D3R antagonist, exhibits very high affinity and selectivity for D3Rs over D2Rs, and is able to inhibit cocaine- or methamphetamine-induced reinforcement and reinstatement in self-administration tests. In the present study, our results illustrated that YQA14 dose-dependently reduced infusions under the fixed-ratio 2 procedure and lowered the breakpoint under the progressive-ratio procedure in heroin self-administered rats, also attenuated heroin-induced reinstatement of drug-seeking behavior. On the other hand, YQA14 not only reduced morphine-induced expression of conditioned place preference but also facilitated the extinguishing process in mice. Moreover, we elucidated that YQA14 attenuated opioid-induced reward or reinforcement mainly by inhibiting morphine-induced up-regulation of dopaminergic neuron activity in the ventral tegmental area and decreasing dopamine release in the nucleus accumbens with a fiber photometry recording system. These findings suggest that D3R might play a very important role in opioid addiction, and YQA14 may have pharmacotherapeutic potential in attenuating opioid-induced addictive behaviors dependent on the dopamine system.


Subject(s)
Rats , Mice , Animals , Analgesics, Opioid , Dopamine , Heroin/pharmacology , Dopamine Antagonists/pharmacology , Receptors, Dopamine D3/metabolism , Morphine/pharmacology , Behavior, Addictive/drug therapy , Self Administration
11.
Zhongguo yi xue ke xue yuan xue bao ; Zhongguo yi xue ke xue yuan xue bao;(6): 533-540, 2023.
Article in Chinese | WPRIM | ID: wpr-1008100

ABSTRACT

Objective To determine the optimal dosage and intervention duration of reserpine to establish a rat model of hypotension.Methods According to the body weight and systolic blood pressure (SBP),60 male Wistar rats were assigned to six groups (n=10),including a control group and five observation groups with different doses.The control group was administrated with 10 ml/kg 0.5% sodium carboxymethyl cellulose solution,and the observation groups with 0.016,0.032,0.064,0.128,and 0.160 mg/kg reserpine suspensions,respectively.All the groups were administrated by gavage twice a day,and the body weights of rats were monitored daily.SBP and heart rate (HR) were measured before modeling and 1-6 weeks after administration.After 6 weeks of administration,the blood samples of inner canthus were collected.The levels of lactate dehydrogenase (LDH),creatine kinase MB isoenzyme (CK-MB),alanine aminotransferase,aspartate aminotransferase (AST),serum creatinine,and blood urea nitrogen (BUN) were measured by an autoanalyzer.Three rats in each group were randomly selected for observation of the changes in SBP after drug withdrawal and the rest rats were sacrificed for measurement of the levels of norepinephrine and dopamine in the brain.Results Compared with the control group,different doses of reserpine lowered the SBP of rats (F=28.492,P<0.001).The decline in SBP increased in a concentration-dependent manner.SBP reached the lowest value after 1 week,rose slightly later,and was stable after 3 weeks of administration.There was no significant difference in SBP between 0.016 mg/kg reserpine group and the control group after the 5th week (P>0.05).The SBP levels of rats in 0.032,0.064,0.128,and 0.160 mg/kg reserpine groups showed no significant difference between each other (P=0.204) and were lower than that in the control group (all P<0.001).One week after drug withdrawal,the SBP of rats in the observation groups rose to the baseline level and remained stable.HR showed similar changes among groups,first increasing and then decreasing.There was no significant difference in HR among different groups at the same time point (F=0.922,P=0.475).Compared with the control group,reserpine of different doses reduced the norepinephrine content in the hippocampus (all P<0.001),and 0.128 mg/kg (P=0.045) and 0.160 mg/kg (P=0.042) reserpine lowered the dopamine level in the striatum,which showed no significant differences between different reserpine groups(P=0.343,P=0.301).The levels of LDH,CK-MB,and BUN in the serum increased with the increase in reserpine concentration,and the levels of LDH (P=0.001),CK-MB (P=0.020),AST (P=0.007),and BUN (P=0.001) in the 0.160 mg/kg reserpine group were significantly different from those in the control group.Conclusions The rat model of hypotension can be induced by gavage with reserpine.The gavage with reserpine at a dose of 0.032 mg/kg,twice a day for three consecutive weeks is the optimal scheme for the modeling.After the model establishment,continuous administration is essential to maintain the hypotension.


Subject(s)
Male , Rats , Animals , Reserpine , Dopamine , Rats, Wistar , Hypotension/chemically induced , Norepinephrine
12.
Article in English | WPRIM | ID: wpr-1010997

ABSTRACT

Five new racemic N-acetyldopamine (NADA) trimers, asponchimides A-E (1-5), were isolated from Aspongopus chinensis, a prominent traditional Chinese medicinal insect employed for alleviating pain, treating indigestion, and addressing kidney ailments. Compounds 1-5 were successfully resolved by chiral high-performance liquid chromatography (HPLC), yielding five pairs of enantiomers: (+)- and (-)-asponchimides A-E (1a/1b-5a/5b). Their structural identities were discerned by extensive spectroscopic analyses, including high-resolution mass spectrometry (HRMS), ultraviolet-visible (UV-Vis) spectroscopy, infrared (IR) spectroscopy, and nuclear magnetic resonance (NMR), and their absolute configurations were determined by electronic circular dichroism (ECD) calculations. Compounds 1-5 are pioneering instances of NADA trimers featuring a Δ7 double bond. When subjected to a series of bioassays, a majority of the compounds exhibited weak inhibitory activity against nitric oxide (NO) production in LPS-induced RAW 264.7 cells.


Subject(s)
Molecular Structure , Magnetic Resonance Spectroscopy , Dopamine , Nitric Oxide
13.
Psicol. ciênc. prof ; 43: e257372, 2023. tab, graf
Article in English | LILACS, INDEXPSI | ID: biblio-1529207

ABSTRACT

Mindfulness has been defined as attention and awareness to the present with an attitude of openness, non-judgment, and acceptance. It is suggested that mindfulness can positively influence experiences in sports and physical activity, increasing adherence to these activities. This study aimed to examine new psychometric properties of the State Mindfulness Scale for Physical Activity (SMS-PA) using classical and modern testing theories among Brazilian sport and exercise practitioners. Two studies were conducted. In the first, with 617 Brazilian sports practitioners, confirmatory factor analysis supported the bifactor structure of the SMS-PA composed of two specific (mental and body mindfulness) and one general factor (state mindfulness), which did not vary among genders. The Rasch Rating Scale Model (RSM) supported essential one-dimensionality indicated by the general factor with good item fit statistics (infit/outfit 0.62-1.27). The model presented a good level of Rasch reliability (0.85), and the items difficulty estimation provided an understanding of the continuum represented by their content. In the second study, with 249 Brazilian exercise practitioners, the structural equation modeling showed that Body Mindfulness was associated with positive outcomes (positive affect and satisfaction with practice). The mediation analysis showed that people with higher levels of Body mindfulness tend to experience greater levels of Positive Affect and, consequently, greater Satisfaction with exercises. The results suggest that the Brazilian version of the SMS-PA is an appropriate measure of the state of mindfulness.(AU)


Mindfulness pode ser definido como atenção e consciência no momento presente com uma atitude de abertura, não julgamento e aceitação. A literatura sugere que o mindfulness pode influenciar positivamente experiências no esporte e atividade física e pode exercer um papel na adesão a essas atividades. Este estudo teve como objetivo investigar novas propriedades psicométricas da State Mindulness Sacale for Physical Activity (SMS-PA) utilizando as teorias clássicas e modernas dos testes em praticantes de exercício físico e esporte brasileiros. Dois estudos foram conduzidos. No primeiro, com 617 brasileiros praticantes de esporte, a Análise Fatorial Confirmatória (AFC) demonstrou adequação à estrutura bifatorial da SMS-PA composta por dois fatores específicos (mindfulness mental e físico) e um fator geral (estado de mindfulness), que apresentou invariância entre sexos. A Rasch Rating Scale Model (RSM) corroborou a unidimensionalidade essencial indicada pelo fator geral com bons índices de ajustes (infit/outfit 0.62 -1.27). O modelo apresentou bom nível de precisão Rasch (.85), e a estimação de dificuldade dos itens possibilitou compreensão do continuum representado pelo conteúdo dos itens. No segundo estudo, com 249 brasileiros praticantes de esporte, a Modelagem de Equações Estruturais demonstrou que o mindfulness físico esteve associado a afetos positivos e satisfação com a prática. A análise de mediação mostrou que pessoas com níveis altos de mindfulness físico tendem a apresentar níveis mais elevados de afeto positivo e, consequentemente, níveis mais elevados de satisfação com a prática. Os resultados sugerem que a versão brasileira do SMS-PA é uma medida apropriada do estado de mindfulness para atividades físicas.(AU)


La atención plena puede definirse como la atención y la conciencia en el momento presente con una actitud de apertura, no juicio y aceptación. La literatura sugiere que el mindfulness puede influir positivamente en las experiencias en el deporte y en la actividad física, además de desempeñar un papel en la adherencia a estas actividades. Este estudio tuvo como objetivo investigar nuevas propiedades psicométricas de la State Mindfulness Scale for Physical Activity (SMS-PA) utilizando las teorías clásicas y modernas de las pruebas en practicantes de ejercicio físico y de deporte en Brasil. Para ello, se realizaron dos estudios. En el primer, participaron 617 practicantes de deporte brasileños, y el análisis factorial confirmatorio (AFC) demostró adecuación en la estructura bifactorial de la SMS-PA, compuesta por dos factores específicos (mindfulness mental y físico) y un factor general (estado de mindfulness), que mostró invarianza entre sexos. El Rasch Rating Scale Model (RSM) corroboró la unidimensionalidad esencial indicada por el factor general con buenos índices de ajuste (infit/outfit 0,62-1,27). El modelo mostró un buen nivel de precisión de Rasch (.85), y la estimación de la dificultad de los ítems permitió comprender el continuo representado por el contenido de estos. En el segundo estudio, con 249 practicantes de deporte, el modelo de ecuaciones estructurales mostró que el mindfulness físico estaba asociado a resultados positivos (afecto positivo y satisfacción con la práctica). El análisis de mediación reveló que las personas con altos niveles de mindfulness físico tendían a tener mayores niveles de afecto positivo y, en consecuencia, mayores niveles de satisfacción con la práctica. Los resultados sugieren que la versión brasileña de la SMS-PA es una medida adecuada de mindfulness.(AU)


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Young Adult , Psychometrics , Exercise , Evaluation Studies as Topic , Mindfulness , Psychology, Sports , Anxiety , Play and Playthings , Psychological Phenomena , Psychological Tests , Psychology , Quality of Life , Recreation , Reference Standards , Running , Attention , Self Concept , Soccer , Stress, Physiological , Swimming , Temperance , Therapeutics , Thinking , Wounds and Injuries , Wrestling , Yoga , Breathing Exercises , Adaptation, Psychological , Dopamine , Cognitive Behavioral Therapy , Mental Health , Reproducibility of Results , Mental Competency , Cognition , Meditation , Behavioral Disciplines and Activities , Wit and Humor , Affect , Mind-Body Therapies , Professional Role , Personal Autonomy , Harm Reduction , Emotions , Disease Prevention , Athletic Performance , Volleyball , Resilience, Psychological , Feeding Behavior , Pleasure , Sedentary Behavior , Executive Function , Athletes , Pandemics , Acceptance and Commitment Therapy , Psychology, Developmental , Optimism , Self-Control , Healthy Lifestyle , Diet, Healthy , Mentoring , Teacher Training , Healthy Aging , Freedom , Mentalization , Emotional Regulation , Psychological Distress , Psychosocial Functioning , Psychosocial Intervention , COVID-19 , Sociodemographic Factors , Energy Healing , Gymnastics , Habits , Happiness , Health Promotion , Mental Healing , Metabolism , Motivation , Motor Activity , Movement , Muscle Relaxation
14.
Biol. Res ; 56: 25-25, 2023. ilus, graf
Article in English | LILACS | ID: biblio-1513737

ABSTRACT

BACKGROUND: Mechanoreceptor activation modulates GABA neuron firing and dopamine (DA) release in the mesolimbic DA system, an area implicated in reward and substance abuse. The lateral habenula (LHb), the lateral hypothalamus (LH), and the mesolimbic DA system are not only reciprocally connected, but also involved in drug reward. We explored the effects of mechanical stimulation (MS) on cocaine addiction-like behaviors and the role of the LH-LHb circuit in the MS effects. MS was performed over ulnar nerve and the effects were evaluated by using drug seeking behaviors, optogenetics, chemogenetics, electrophysiology and immunohistochemistry. RESULTS: Mechanical stimulation attenuated locomotor activity in a nerve-dependent manner and 50-kHz ultrasonic vocalizations (USVs) and DA release in nucleus accumbens (NAc) following cocaine injection. The MS effects were ablated by electrolytic lesion or optogenetic inhibition of LHb. Optogenetic activation of LHb suppressed cocaine-enhanced 50 kHz USVs and locomotion. MS reversed cocaine suppression of neuronal activity of LHb. MS also inhibited cocaine-primed reinstatement of drug-seeking behavior, which was blocked by chemogenetic inhibition of an LH-LHb circuit. CONCLUSION: These findings suggest that peripheral mechanical stimulation activates LH-LHb pathways to attenuate cocaine-induced psychomotor responses and seeking behaviors.


Subject(s)
Humans , Cocaine/metabolism , Cocaine/pharmacology , Habenula/metabolism , Cocaine-Related Disorders/metabolism , Cocaine-Related Disorders/therapy , Dopamine/metabolism , Dopamine/pharmacology , Hypothalamus/metabolism , Neurons
15.
Psicol. ciênc. prof ; 43: e244329, 2023.
Article in Portuguese | LILACS, INDEXPSI | ID: biblio-1422404

ABSTRACT

Este artigo relaciona o paradigma manicomial, relativo à assistência psiquiátrica, à compreensão e ao manejo do campo da saúde mental, ao paradigma proibicionista, referente ao porte, uso e à circulação de drogas, como duas séries de políticas e práticas sociais que operam a guerra de raças que está na base do Estado brasileiro. Com isso, propomos uma investigação arqueogenealógica acerca do emaranhado de condições de emergência das práticas e objetos de saber-poder mobilizados por esses dois paradigmas, atentando ao caráter político das verdades que as sustentam. Dedicamo-nos especialmente ao período entre o final do século XIX e o começo do XX ao interrogar as dinâmicas de forças que constituem as práticas sociais e seus efeitos de subjetivação, produzidos pela sujeição de corpos por meio de uma diversidade de mecanismos morais, disciplinares, eugênicos, higienistas e biopolíticos que articulam os anseios de modernização e produtividade do Estado brasileiro à gestão dos problemas de saúde e segurança do país, colocando a pobreza, o vício e a doença como desdobramento da sua constituição racial. Concluímos, por fim, que o conflito de raças aparece como fundo intrínseco que se atualiza no cerne e a partir dos campos problemáticos da saúde mental e das drogas, colocando como saída dos impasses sociais e políticos eliminar ou pelo menos diluir, via miscigenação ou submissão para integração, o elemento físico e cultural do negro do Brasil.(AU)


This article puts in relation the asylum paradigm, associated to psychiatric care, to the understanding and management of the mental health field, to the prohibitionist paradigm, that refers to the possession, use and circulation of drugs, as two series of social policies and practices that operate racial war that is in the base of the Brazilian State. So on, we propose an archeogenealogical investigation about the emergency conditions of the practices and objects of knowledge-power organized by these two paradigms, paying attention to the political character of the truths that support them. Looking especially at the period between the end of the 19th century and the beginning of the 20th, we questioned the dynamics of forces that constitute social practices and their effects of subjectivation, produced by the subjection of bodies through moral, disciplinary, eugenic, hygienist and biopolitics mechanisms that articulate the modernization and productivity aspirations of the Brazilian State to the management of the country's health and safety problems, understanding poverty, addiction and disease as consequences of its racial constitution. We conclude that the conflict of races is an intrinsic background that is updated at the heart of the problematic fields of mental health and drugs. Considering this, the solution for social and political impasses is the elimination or at least dilution, through miscegenation or submission for integration, of the physical and cultural element of black people in Brazil.(AU)


Este artículo relaciona el paradigma asilar de atención psiquiátrica, comprensión y manejo del campo de la salud mental, con el paradigma prohibicionista, referente a al uso y circulación de drogas, como dos series de políticas y prácticas sociales que operan la guerra racial que está en el fundamento del Estado brasileño. Así, proponemos una investigación arqueogenealógica sobre las condiciones de emergencia de prácticas y objetos de saber-poder movilizados por estos dos paradigmas, prestando atención al carácter político de las verdades que los sustentan. Nos dedicamos especialmente al período entre finales del siglo XIX y principios del XX buscando la dinámica de fuerzas que constituyen a las prácticas sociales y sus efectos de subjetivación, producidos por la sujeción de los cuerpos a través de una diversidad de mecanismos morales, disciplinarios, eugenésicos, higienistas y biopolíticos que articulan las aspiraciones de modernización y productividad del Estado brasileño a la gestión de los problemas de salud y seguridad del país, comprendiendo la pobreza, la adicción y la enfermedad como resultado de su constitución racial. Finalmente, concluimos que el conflicto racial aparece como un trasfondo intrínseco que se actualiza en el cerne y desde los campos problemáticos de la salud mental y de las drogas, tomando como soluciones a los impasses sociales y políticos nacionales, la eliminación o al menos la dilución, a través del mestizaje o de la sumisión para fines de integración, del elemento físico y cultural del negro en Brasil.(AU)


Subject(s)
Humans , Male , Female , History, 19th Century , History, 20th Century , Illicit Drugs , Mental Health , Public Health , Racial Groups , Prejudice , Psychology , Psychology, Social , Psychomotor Agitation , Social Alienation , Social Problems , Social Work , Substance Withdrawal Syndrome , Black or African American , Dopamine , Poverty Areas , Cognitive Behavioral Therapy , Civil Rights , Community Health Services , Substance-Related Disorders , Dangerous Behavior , Aggression , Mental Health Assistance , Racism , Medicalization , Ethnic Violence , Social Segregation , Freedom , Workhouses , Hallucinations , Hospitalization , Language Arts
16.
Article in Chinese | WPRIM | ID: wpr-936232

ABSTRACT

Objective: To investigate the effects of dopamine on olfactory function and inflammatory injury of olfactory bulb in mice with allergic rhinitis (AR). Methods: AR mouse model was established by using ovalbumin (OVA), and the mice were divided into two groups: olfactory dysfunction (OD) group and without OD group through buried food pellet test (BFPT). The OD mice were randomly divided into 2 groups, and OVA combined with dopamine (3, 6, 9 and 12 days, respectively) or OVA combined with an equal amount of PBS (the same treatment time) was administered nasally. The olfactory function of mice was evaluated by BFPT. The number of eosinophils and goblet cells in the nasal mucosa were detected by HE and PAS staining. Western blotting, immunohistochemistry or immunofluorescence were used to detect the expression of olfactory marker protein (OMP) in olfactory epithelium, the important rate-limiting enzyme tyrosine hydroxylase (TH) of dopamine, and the marker proteins glial fibrillary acidic protein (GFAP) and CD11b of glial cell in the olfactory bulb. TUNEL staining was used to detect the damage of the olfactory bulb. SPSS 26.0 software was used for statistical analysis. Results: AR mice with OD had AR pathological characteristics. Compared with AR mice without OD, the expression of OMP in olfactory epithelium of AR mice with OD was reduced (F=26.09, P<0.05), the expression of GFAP and CD11b in the olfactory bulb was increased (F value was 38.95 and 71.71, respectively, both P<0.05), and the expression of TH in the olfactory bulb was decreased (F=77.00, P<0.05). Nasal administration of dopamine could shorten the time of food globule detection in mice to a certain extent, down-regulate the expression of GFAP and CD11b in the olfactory bulb (F value was 6.55 and 46.11, respectively, both P<0.05), and reduce the number of apoptotic cells in the olfactory bulb (F=25.64, P<0.05). But dopamine had no significant effect on the number of eosinophils and goblet cells in nasal mucosa (F value was 36.26 and 19.38, respectively, both P>0.05), and had no significant effect on the expression of OMP in the olfactory epithelium (F=55.27, P>0.05). Conclusion: Dopamine can improve olfactory function in mice with AR to a certain extent, possibly because of inhibiting the activation of glial cells in olfactory bulb and reducing the apoptotic injury of olfactory bulb cells.


Subject(s)
Animals , Humans , Mice , Disease Models, Animal , Dopamine , Mice, Inbred BALB C , Nasal Mucosa/metabolism , Olfactory Bulb/pathology , Ovalbumin , Rhinitis, Allergic/metabolism
17.
J. biomed. eng ; Sheng wu yi xue gong cheng xue za zhi;(6): 398-404, 2022.
Article in Chinese | WPRIM | ID: wpr-928237

ABSTRACT

This study aims to explore the potential of polyaspartic acid grafted dopamine copolymer (PAsp- g-DA) chelated Fe 3+ for magnetic resonance imaging (MRI) visual photothermal therapy. Polyaspartic acid grafted copolymer of covalently grafted dopamine and polyethylene glycol (PAsp- g-DA/PEG) was obtained by the ammonolysis reaction of poly succinimide (PSI), and then chelated with Fe 3+ in aqueous solution. The relaxivity in vitro, magnetic resonance imaging enhancement in vivo and photothermal conversion effect at 808 nm were investigated. The results showed that polymeric iron coordination had good near-infrared absorption and photothermal conversion properties, good magnetic resonance enhancement effect, and good longitudinal relaxation efficiency under different magnetic field intensities. In summary, this study provides a new magnetic resonance visual photothermal therapeutic agent and a new research idea for the research in related fields.


Subject(s)
Dopamine , Magnetic Resonance Imaging/methods , Nanoparticles , Peptides , Phototherapy , Photothermal Therapy , Polymers
18.
Braz. j. biol ; 82: 1-8, 2022. tab
Article in English | LILACS, VETINDEX | ID: biblio-1468423

ABSTRACT

Exposure to the hight-fat diet may alter the control of food intake promoting hyperphagia and obesity. The objective of this study was to investigate the effects of this diet on dopamine receptors (drd1 and drd2), proopiomelanocortin (pomc), neuropeptideY (npy) genes expression, and preference food in adult rats. Wistar female rats were fed a hight-fat or control diet during pregnancy and lactation. The offspring were allocated into groups: Lactation – Control (C) and High-fat (H). Post- weaning – Control Control (CC), offspring of mothers C, fed a control diet after weaning; Control Hight-fat (CH), offspring of mothers C, fed a hight-fat diet after weaning; Hight-fat Control (HC), offspring of mothers H, fed with control diet after weaning; and Hight-fat Hight-fat (HH), offspring of mothers H, fed a H diet after weaning. The groups CH and HH presented greater expression of drd1 in comparison to the CC. The drd2 of CH and HC presented higher gene expression than did CC. HH presented higher pomc expression in comparison to the other groups. HC also presented greater expression in comparison to CH. The npy of HH presented greater expression in relation to CH and HC. HH and HC have had a higher preference for a high-fat diet at 102º life’s day. The high-fat diet altered the gene expression of the drd1, drd2, pomc and npy, and influencing the food preference for high-fat diet.


A exposição à dieta hiperlipídica pode alterar o controle da ingestão de alimentos, promovendo hiperfagia e obesidade. O objetivo deste estudo foi investigar os efeitos dessa dieta sobre a expressão gênica dos receptores de dopamina (drd1 e drd2), da proopiomelanocortina (pomc) e neuropeptídeo Y (npy), e preferência alimentar em ratos adultos. Ratas Wistar foram alimentadas com uma dieta hiperlipídica ou controle durante a gestação e lactação. Os descendentes foram alocados em grupos: Lactação – Controle (C) e Hiperlipídica (H). Pós-desmame – Controle Controle (CC), descendentes das genitoras do grupo controle e alimentados com dieta controle após o desmame; Controle Hiperlipídica (CH), descendentes das genitoras do grupo controle e alimentados com dieta hiperlipídica após o desmame; Hiperlipídica Controle (HC), descendentes das genitoras do grupo hiperlipídica e alimentados com dieta controle após o desmame; Hiperlipídica Hiperlipídica (HH), descendentes das genitoras do grupo hiperlipídica e alimentados com dieta hiperlipídica após o desmame. Os grupos CH e HH apresentaram maior expressão de drd1 em comparação ao CC. O drd2 de CH e HC apresentou maior expressão gênica que o CC. HH apresentou maior expressão de pomc em comparação com os outros grupos. O HC também apresentou maior expressão de pomc em comparação ao CH. O npy do HH apresentou maior expressão em relação ao CH e HC. HH e HC tiveram uma preferência maior por uma dieta rica em gordura no 102º dia de vida. A dieta hiperlipídica alterou a expressão gênica dos drd1, drd2, pomc e npy e influenciou na preferência alimentar pela dieta hiperlipídica.


Subject(s)
Female , Animals , Rats , Diet, High-Fat/adverse effects , Diet, High-Fat/veterinary , Dopamine/analysis , Neuropeptide Y/analysis , Pro-Opiomelanocortin/analysis , Rats, Wistar
19.
Psicol. ciênc. prof ; 42: e235853, 2022. tab
Article in Portuguese | LILACS, INDEXPSI | ID: biblio-1360644

ABSTRACT

O metilfenidato é um fármaco indicado no tratamento do transtorno de déficit de atenção e hiperatividade (TDAH) e da narcolepsia. Atua no sistema nervoso central inibindo a recaptação de dopamina e noradrenalina, o que provoca um efeito psicoestimulante. Estudos anteriores demonstraram um aumento no consumo da droga por indivíduos saudáveis que buscam aprimoramento cognitivo. O objetivo deste estudo foi investigar a relação entre o uso não prescrito de metilfenidato e o desempenho acadêmico de estudantes de medicina de uma universidade do sul de Santa Catarina. Trata-se de uma pesquisa descritiva de caráter quantitativo. Participaram da pesquisa 243 acadêmicos do segundo ao oitavo semestre do curso de medicina; os dados foram coletados por meio de um questionário e analisados com ajuda do software SPSS versão 21.0. A prevalência de uso não prescrito do metilfenidato foi de 2,9%, enquanto 17,3% dos pesquisados afirmaram já ter utilizado o medicamento alguma vez na vida. As motivações para consumo mais citadas foram melhorar o desempenho cognitivo (10%) e ficar acordado por mais tempo (4,1%), e a forma de obtenção mais comum foi por meio de amigos (56,5%). O psicoestimulante não apresentou efeitos de aprimoramento cognitivo, uma vez que participantes que nunca utilizaram o fármaco apresentaram um desempenho acadêmico superior (8,80) se comparados àqueles que usam (7,92) ou já usaram (8,01). Os resultados corroboram a hipótese de efeito relacionado a sensações de bem-estar em pessoas saudáveis, o que torna preocupante a injustificada exposição aos efeitos adversos da droga. Ressalta-se a necessidade de ações que visem à promoção de saúde mental aos universitários.(AU)


Methylphenidate is a drug indicated for the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy. It acts on the central nervous system by inhibiting dopamine and norepinephrine reuptake, causing a psychostimulant effect. Previous studies have shown an increase in drug use by healthy individuals seeking cognitive enhancement. This study aimed to investigate the relationship between non-prescribed methylphenidate use and academic performance of medical students of a university in southern Santa Catarina. It is quantitative descriptive study. A total of 243 students from the second to the eighth semester of the medicine school participated in the research; data were collected by using a questionnaire and analyzed with the software SPSS Version 21.0. The prevalence of non-prescribed methylphenidate use was 2.9% and 17.3% of respondents said they had used the drug once in their lifetime. The most cited motivations for consumption were improving cognitive performance (10%) and staying awake longer (4.1%), with the most common way of obtention being through friends (56.5%). The psychostimulant had no cognitive enhancement effects since participants who never used the drug had a higher academic performance (8.80) compared with those who use (7.92) or have used it (8.01). The results corroborate the hypothesis of an effect related to feelings of well-being in healthy people, thus making the unjustified exposure to the adverse effects of the drug concerning. We emphasize the need for actions aimed at promoting mental health to university students.(AU)


El metilfenidato es un medicamento indicado para el tratamiento del trastorno por déficit de atención e hiperactividad (TDAH) y de la narcolepsia. Actúa sobre el sistema nervioso central al inhibir la reabsorción de dopamina y norepinefrina, causando un efecto psicoestimulante. Estudios anteriores han demostrado un aumento del consumo de este medicamento por personas sanas que buscan una mejora cognitiva. El objetivo de este estudio fue investigar la relación entre el uso no prescrito de metilfenidato y el rendimiento académico de los estudiantes de medicina de una universidad en el sur de Santa Catarina (Brasil). Se trató de una investigación cuantitativa descriptiva. Participaron en la investigación 243 estudiantes del segundo al octavo semestre del curso de medicina; los datos se recolectaron mediante un cuestionario y se analizaron con la ayuda del software SPSS, versión 21.0. La prevalencia del uso no prescrito de metilfenidato fue del 2,9%, y el 17,3% de los encuestados dijeron que habían usado el medicamento en algún momento de sus vidas. Las motivaciones de consumo más citadas fueron: mejorar el rendimiento cognitivo (10%) y permanecer despierto por más tiempo (4,1%), y la forma más común de obtenerlo fue con los amigos (56,5%). El psicoestimulante no tuvo ningún efecto de mejora cognitiva, ya que los participantes que nunca lo usaron tuvieron un rendimiento académico superior (8,80) en comparación con aquellos que lo usan (7,92) o lo han usado (8,01). Los resultados corroboraron la hipótesis de un efecto relacionado con los sentimientos de bienestar en personas sanas, lo que provoca una exposición injustificada a los efectos adversos de este fármaco. Se enfatiza la necesidad de acciones dirigidas a promover la salud mental de los estudiantes universitarios.(AU)


Subject(s)
Humans , Male , Female , Young Adult , Students, Medical , Intelligence , Methylphenidate , Research , Attention , Attention Deficit Disorder with Hyperactivity , Schools , Pharmaceutical Preparations , Dopamine , Mental Health , Life , Drug-Related Side Effects and Adverse Reactions , Efficiency , Emotions , Academic Performance , Medicine
20.
Rev. colomb. anestesiol ; 49(4): e200, Oct.-Dec. 2021. tab, graf
Article in English | LILACS, COLNAL | ID: biblio-1341236

ABSTRACT

Abstract Introduction Vasopressors are essential in the management of various types of shock. Objective To establish the trend of vasopressors use in the intensive care units (ICU) in a population of patients affiliated with the Colombian Health System, 2010-2017. Methods Observational trial using a population database of patients hospitalized in eleven ICUs in various cities in Colombia. The drugs dispensed to hospitalized patients over 18 years old, from January 2010 until December 2017 were considered. A review and analysis of the vasopressors dispensed per month was conducted, taking into account sociodemographic and pharmacological variables (vasopressor used and daily doses defined per 100/beds/day (DBD). Results 81,348 dispensations of vasopressors, equivalent to 26,414 treatments in 19,186 patients receiving care in 11 hospitals from 7 cities were reviewed. The mean age of patients was 66.3±18.1 years and 52.6 % were males. Of the total number of treatments recorded, 17,658 (66.8 %) were with just one vasopressor. Norepinephrine was the most frequently prescribed drug (75.9 % of the prescriptions dispensed; 60.5 DBD), followed by adrenaline (26.6 %; 41.6 DBD), dopamine (19.4%), dobutamine (16.0 %), vasopressin (8.5 %) and phenylephrine (0.9 %). The use of norepinephrine increased from 2010 to 2017 (+6.19 DBD), whilst the use of other drugs decreased, particularly the use of adrenaline (-60.6 DBD) and dopamine (-10.8 DBD). Conclusions Norepinephrine is the most widely used vasopressor showing a growing trend in terms of its use during the study period, which is supported by evidence in favor of its effectiveness and safety in patients with shock.


Resumen Introducción Los fármacos vasopresores son fundamentales en el manejo de los diferentes tipos de choque. Objetivo Determinar la tendencia de utilización de fármacos vasopresores en unidades de cuidados intensivos (UCI) en una población de pacientes afiliados al Sistema de Salud de Colombia, 2010-2017. Métodos Estudio observacional, a partir de una base de datos poblacional con pacientes hospitalizados en once UCI de diferentes ciudades de Colombia. Se obtuvieron las dispensaciones de pacientes mayores de 18 años hospitalizados desde enero de 2010 hasta diciembre de 2017. Se hizo revisión y análisis de la dispensación mensual de vasopresores. Se consideraron variables sociodemográficas y farmacológicas (medicamento vasopresor usado y dosis diarias definidas por 100 camas/día [DCD]). Resultados Se revisaron 81.348 dispensaciones de vasopresores, equivalentes a 26.414 terapias en 19.186 pacientes atendidos en 11 hospitales de 7 ciudades, cuya edad promedio fue 66,3±18,1 años y el 52,6 % eran hombres. Del total de terapias registradas, 17.658 (66,8 %) fueron con un solo vasopresor. La norepinefrina fue el más comúnmente prescrito (75,9 % de las dispensaciones; 60,5 DCD), seguido por adrenalina (26,6 %; 41,6 DCD), dopamina (19,4 %), dobutamina (16,0 %), vasopresina (8,5 %) y fenilefrina (0,9 %). El uso de norepinefrina se incrementó de 2010 a 2017 (+6,19 DCD), mientras que el de otros fármacos disminuyó, especialmente adrenalina (-60,6 DCD) y dopamina (-10,8 DCD). Conclusiones La norepinefrina es el fármaco vasopresor más utilizado y el que ha demostrado una tendencia de uso incremental durante el periodo de estudio, lo cual está respaldado por evidencia a favor de su efectividad y seguridad en pacientes con choque.


Subject(s)
Humans , Male , Middle Aged , Aged , Shock , Vasoconstrictor Agents , Vasopressins , Intensive Care Units , Phenylephrine , Pharmaceutical Preparations , Dopamine , Epinephrine , Norepinephrine , Dobutamine , Drug Utilization , Dosage , Prescriptions
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