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1.
Vet Med Sci ; 10(2): e1395, 2024 03.
Article in English | MEDLINE | ID: mdl-38459818

ABSTRACT

The maned wolf, Chrysocyon brachyurus, is the largest South American canid, with a natural distribution that stretches across Peru, Bolivia, Brazil, Argentina, Paraguay and Uruguay. The present study reports the case of a rescued specimen of maned wolf that underwent a rehabilitation process in Paraguay, starting in October 2020 with its rescue, and finalising in May 2021 with the reintroduction. Herein, we document findings regarding the general management, biometrics, feeding and environmental enrichment; chemical immobilisation and monitoring; haematology, blood biochemistry and specific serology-relevant pathogens; skin examination and bone marrow cytology; orthopaedic, ophthalmological and dental evaluation; abdominal and cardiac ultrasonography; radiology and copro-parasitology. Main findings include the feeding habits of the individual and enrichment opportunities. The animal weighed 7 kg on arrival, with an estimated age of 5 months, and 18 kg on reintroduction, with an estimated age of 1 year. The animal tested negative to serologic tests for Brucella canis, Dirofilaria, canine distemper, Toxoplasmosis and canine parvovirus. Leptospira testing showed antibodies against L. grippotyphosa on both samplings, L. wolffi and L. ictero on the first sampling, and L. pomona on the second sampling. Abdominal organs were examined and measured through ultrasound evaluation and kidneys showed no alterations. Echocardiography showed preserved mitral, tricuspid and aortic valve flows, but turbulent pulmonary valve flow. Copro-parasitology reported the presence of Lagochilascaris sp. and Balantidium sp. All the information gathered aided in diagnosing the health status of the individual, and the response to environmental enrichment helped assess the behaviour, which led to the suggestion of reintroducing the animal. These data constitute the first published health check of a maned wolf in Paraguay, which can contribute to the species' conservation in the country. The protocol presented in this study can serve as a basis for developing an action plan for the maned wolf in Paraguay.


Subject(s)
Canidae , Distemper , Dog Diseases , Leptospira , Animals , Dogs , Paraguay , Brazil
2.
Chaos ; 34(2)2024 Feb 01.
Article in English | MEDLINE | ID: mdl-38412534

ABSTRACT

In this article, we propose a numerical model based on the ϕ4 equation to simulate the dynamics of a front inside a microchannel that features an imperfection at a sidewall to different flow rates. The micro-front displays pinning-depinning phenomena without damped oscillations in the aftermath. To model this behavior, we propose a ϕ4 model with a localized external force and a damping coefficient. Numerical simulations with a constant damping coefficient show that the front displays pinning-depinning phenomena showing damped oscillations once the imperfection is overcome. Replacing the constant damping coefficient with a parabolic spatial function, we reproduce accurately the experimental front-defect interaction.

3.
Microorganisms ; 11(11)2023 Oct 30.
Article in English | MEDLINE | ID: mdl-38004673

ABSTRACT

Human papillomavirus (HPV) is the most prevalent sexually transmitted infection (STI) worldwide, with popular screening methods including the Papanicolaou test and HPV genotyping. However, in clinical practice, coinfections with other pathogens are often underestimated. Therefore, our study aims to describe the prevalence of STIs and vaginosis in urogenital samples from patients who had been tested exclusively for HPV genotyping. METHODS: This analytical, prospective, cross-sectional study included 408 males and females. Eligible participants had positive and negative HPV genotyping test results and agreed to early detection or had HPV antecedents. They provided the same urogenital samples used for HPV detection and, through our multiplex in-house PCR assay, we screened for Candida spp., Ureaplasma spp., Trichomonas vaginalis, Neisseria gonorrhoeae, Chlamydia trachomatis, herpes simplex virus 1 and 2 (HSV), Mycoplasma spp., molluscum contagiosum virus (MCV), Treponema pallidum, Haemophilus spp., Staphylococcus aureus, and Klebsiella spp. The subsequent statistical analysis aimed to reveal correlations between HPV genotypes and the identified pathogens. RESULTS: Of the participants, 72.1% (n = 294) tested positive for HPV genotypes. HR-HPV (high-risk HPV) genotypes comprised 51 (8.1%), 66 (7.1%), and 58 (6.1%). Haemophilus spp., Ureaplasma spp., Candida spp., Staphylococcus aureus, and Mycoplasma spp. frequently co-occurred with HPV infection (p < 0.05). Gender-based variations were notorious for Ureaplasma spp., Mycoplasma spp., and MCV (p < 0.05). Coinfections were prevalent (43.9%), with a positive HPV result elevating the risk for Trichomonas vaginalis, Mycoplasma spp., Staphylococcus aureus, HSV, and MCV (OR > 1, p < 0.05). HPV 16 correlated with HSV and Ureaplasma spp., while HPV 6 was linked with HSV and MCV (p < 0.05). CONCLUSIONS: This screening strategy uncovered significant coinfections and associations between HPV genotypes and pathogens, underscoring the importance of routine screening to explore clinical implications in urogenital health.

4.
Rev. chil. nutr ; 50(2)abr. 2023.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1515170

ABSTRACT

Las harinas de trigo, maíz, lentejas y arroz son elementales para la formulación de distintos alimentos de alto consumo en la población chilena. El proceso de extrusión es ampliamente utilizado por la industria alimentaria para generar propiedades que permitan la reconstitución instantánea de harinas. Sin embargo, dicho proceso tecnológico; afecta la cantidad, la estabilidad y la digestibilidad de los hidratos de carbono (CHO) del ingrediente alimentario. Estas propiedades nutricionales impactan directamente en la respuesta glicémica de los individuos y en el índice glicémico (IG) de los alimentos. La presente revisión analiza el efecto de la extrusión sobre las propiedades nutricionales de los CHO de alimentos elaborados a partir de harinas de consumo habitual en Chile. Factores como la temperatura, y en menor grado, la humedad y velocidad utilizadas en el proceso de extrusión, junto con el origen del grano utilizado, determinan las propiedades nutricionales de CHO presente en harinas extruidas. El estudio, control y estandarización de estas variables operacionales permitiría estandarizar la elaboración industrial de productos extruidos, impactando favorablemente; sobre la velocidad de hidrólisis de almidón y el IG de harinas de trigo, maíz, lentejas o arroz; y de alimentos formulados a partir de ellas.


Flours from wheat, corn, lentils, and rice are essential for the formulation of various high-consumption foods in the Chilean population. The extrusion process is widely used by the food industry to generate properties that allow for the instant reconstitution of flours. However, this technological process affects the nutritional properties of the carbohydrates (CHO) in the food ingredient, including quantity, stability, and digestibility; characteristics that directly impact the glycemic response of individuals and the glycemic index of foods. This review analyzes the effect of extrusion on the nutritional properties of CHO in foods made from commonly consumed flours in Chile. Factors such as temperature, and to a lesser extent, humidity, and speed used in the extrusion process, along with the origin of the grain used, determine the healthy properties of CHO in extruded flours. The utility of adjusting the mentioned variables in the extrusion process would allow for the standardization of industrial scaling in the production of extruded foods that would positively impact the starch hydrolysis rate and glycemic index of wheat, corn, lentil, or rice flours, and foods formulated from them.

5.
Micromachines (Basel) ; 13(3)2022 Feb 24.
Article in English | MEDLINE | ID: mdl-35334649

ABSTRACT

The rheological properties of blood depend highly on the properties of its red blood cells: concentration, membrane elasticity, and aggregation. These properties affect the viscosity of blood as well as its shear thinning behavior. Using an experimental analysis of the interface advancement of blood in a microchannel, we determine the viscosity of different samples of blood. In this work, we present two methods that successfully normalize the viscosity of blood for a single and for different donors, first according to the concentration of erythrocytes and second according to the shear rate. The proposed methodology is able to predict the health conditions of the blood samples by introducing a non-dimensional coefficient that accounts for the response to shear rate of the different donors blood samples. By means of these normalization methods, we were able to determine the differences between the red blood cells of the samples and define a range where healthy blood samples can be described by a single behavior.

6.
Membranes (Basel) ; 12(2)2022 Feb 13.
Article in English | MEDLINE | ID: mdl-35207138

ABSTRACT

In this article, we describe the general features of red blood cell membranes and their effect on blood flow and blood rheology. We first present a basic description of membranes and move forward to red blood cell membranes' characteristics and modeling. We later review the specific properties of red blood cells, presenting recent numerical and experimental microfluidics studies that elucidate the effect of the elastic properties of the red blood cell membrane on blood flow and hemorheology. Finally, we describe specific hemorheological pathologies directly related to the mechanical properties of red blood cells and their effect on microcirculation, reviewing microfluidic applications for the diagnosis and treatment of these diseases.

7.
J Infect Dev Ctries ; 16(1): 63-72, 2022 01 31.
Article in English | MEDLINE | ID: mdl-35192523

ABSTRACT

INTRODUCTION: Severe acute respiratory syndrome-related coronavirus (SARS-CoV-2) infection is characterised by a viral phase and a severe pro-inflammatory phase. The inhibition of the JAK/STAT pathway limits the pro-inflammatory state in moderate to severe COVID-19. METHODOLOGY: We analysed the data obtained by an observational cohort of patients with SARS-CoV-2 pneumonia treated with ruxolitinib in 22 hospitals of Mexico. The applied dose was determined based on physician's criteria. The benefit of ruxolitinib was evaluated using the 8-points ordinal scale developed by the NIH in the ACTT1 trial. Duration of hospital stay, changes in pro-inflammatory laboratory values, mortality, and toxicity were also measured. RESULTS: A total of 287 patients were reported at 22 sites in Mexico from March to June 2020; 80.8% received ruxolitinib 5 mg BID and 19.16% received ruxolitinib 10 mg BID plus standard of care. At beginning of treatment, 223 patients were on oxygen support and 59 on invasive ventilation. The percentage of patients on invasive ventilation was 53% in the 10 mg and 13% in the 5 mg cohort. A statistically significant improvement measured as a reduction by 2 points on the 8-point ordinal scale was described (baseline 5.39 ± 0.93, final 3.67± 2.98, p = 0.0001). There were 74 deaths. Serious adverse events were presented in 6.9% of the patients. CONCLUSIONS: Ruxolitinib appears to be safe in COVID-19 patients, with clinical benefits observed in terms of decrease in the 8-point ordinal scale and pro-inflammatory state. Further studies must be done to ensure efficacy against mortality.


Subject(s)
COVID-19 Drug Treatment , Pyrazoles , Pyrimidines , Cohort Studies , Humans , Nitriles , Pyrazoles/therapeutic use , Pyrimidines/therapeutic use , SARS-CoV-2 , Treatment Outcome
8.
Front Physiol ; 12: 761411, 2021.
Article in English | MEDLINE | ID: mdl-34744796

ABSTRACT

The purpose of this work is to develop a hematocrit-independent method for the detection of beta-thalassemia trait (ß-TT) and iron deficiency anemia (IDA), through the rheological characterization of whole blood samples from different donors. The results obtained herein are the basis for the development of a front microrheometry point-of-care device for the diagnosis and clinical follow-up of ß-TT patients suffering hematological diseases and alterations in the morphology of the red blood cell (RBC). The viscosity is calculated as a function of the mean front velocity by detecting the sample fluid-air interface advancing through a microfluidic channel. Different viscosity curves are obtained for healthy donors, ß-TT and IDA samples. A mathematical model is introduced to compare samples of distinct hematocrit, classifying the viscosity curve patterns with respect to the health condition of blood. The viscosity of the fluid at certain shear rate values varies depending on several RBC factors such as shape and size, hemoglobin (Hb) content, membrane rigidity and hematocrit concentration. Blood and plasma from healthy donors are used as reference. To validate their potential clinical value as a diagnostic tool, the viscosity results are compared to those obtained by the gold-standard method for RBC deformability evaluation, the Laser-Optical Rotational Red Cell Analyzer (LoRRCA).

9.
Sci Rep ; 11(1): 22099, 2021 11 11.
Article in English | MEDLINE | ID: mdl-34764379

ABSTRACT

The spleen is a hematopoietic organ that participates in cellular and humoral immunity. It also serves as a quality control mechanism for removing senescent and/or poorly deformable red blood cells (RBCs) from circulation. Pitting is a specialized process by which the spleen extracts particles, including malaria parasites, from within circulating RBCs during their passage through the interendothelial slits (IES) in the splenic cords. To study this physiological function in vitro, we have developed two microfluidic devices modeling the IES, according to the hypothesis that at a certain range of mechanical stress on the RBC, regulated through both slit size and blood flow, would force it undergo the pitting process without affecting the cell integrity. To prove its functionality in replicating pitting of malaria parasites, we have performed a characterization of P. falciparum-infected RBCs (P.f.-RBCs) after their passage through the devices, determining hemolysis and the proportion of once-infected RBCs (O-iRBCs), defined by the presence of a parasite antigen and absence of DAPI staining of parasite DNA using a flow cytometry-based approach. The passage of P.f.-RBCs through the devices at the physiological flow rate did not affect cell integrity and resulted in an increase of the frequency of O-iRBCs. Both microfluidic device models were capable to replicate the pitting of P.f.-RBCs ex vivo by means of mechanical constraints without cellular involvement, shedding new insights on the role of the spleen in the pathophysiology of malaria.


Subject(s)
Endothelium/parasitology , Lab-On-A-Chip Devices/parasitology , Malaria, Falciparum/parasitology , Parasites/physiology , Spleen/parasitology , Animals , Biomimetics/methods , Erythrocytes/parasitology , Hemolysis/physiology , Humans , Plasmodium falciparum/physiology
10.
Micromachines (Basel) ; 12(6)2021 Jun 20.
Article in English | MEDLINE | ID: mdl-34203063

ABSTRACT

The motivation for this study was to develop a microdevice for the precise rheological characterization of biofluids, especially blood. The method presented was based on the principles of rheometry and fluid mechanics at the microscale. Traditional rheometers require a considerable amount of space, are expensive, and require a large volume of sample. A mathematical model was developed that, combined with a proper experimental model, allowed us to characterize the viscosity of Newtonian and non-Newtonian fluids at different shear rates. The technology presented here is the basis of a point-of-care device capable of describing the nonlinear rheology of biofluids by the fluid/air interface front velocity characterization through a microchannel. The proposed microrheometer uses a small amount of sample to deliver fast and accurate results, without needing a large laboratory space. Blood samples from healthy donors at distinct hematocrit percentages were the non-Newtonian fluid selected for the study. Water and plasma were employed as testing Newtonian fluids for validation of the system. The viscosity results obtained for the Newtonian and non-Newtonian fluids were consistent with pertinent studies cited in this paper. In addition, the results achieved using the proposed method allowed distinguishing between blood samples with different characteristics.

12.
J Med Chem ; 63(14): 7529-7544, 2020 07 23.
Article in English | MEDLINE | ID: mdl-32567857

ABSTRACT

Targeting the serotonin (5-HT) 5-HT2C receptor (5-HT2CR) allosteric site to potentiate endogenous 5-HT tone may provide novel therapeutics to alleviate the impact of costly, chronic diseases such as obesity and substance use disorders. Expanding upon our recently described 5-HT2CR-positive allosteric modulators (PAMs) based on the 4-alkylpiperidine-2-carboxamide scaffold, we optimized the undecyl moiety at the 4-position with variations of cyclohexyl- or phenyl-containing fragments to reduce rotatable bonds and lipophilicity. Compound 12 (CTW0415) was discovered as a 5-HT2CR PAM with improved pharmacokinetics and reduced off-target interactions relative to our previous series of molecules. The in vivo efficacy of compound 12 to potentiate the effects of a selective 5-HT2CR agonist was established in a drug discrimination assay. Thus, 12 is reported as a 5-HT2CR PAM with characteristics suitable for in vivo pharmacological studies to further probe the biological and behavioral mechanisms of allosteric modulation of a receptor important in several chronic diseases.


Subject(s)
Piperidines/pharmacology , Receptor, Serotonin, 5-HT2C/metabolism , Serotonin 5-HT2 Receptor Agonists/pharmacology , Animals , Binding Sites , CHO Cells , Cricetulus , Drug Design , Molecular Docking Simulation , Molecular Structure , Piperidines/chemical synthesis , Piperidines/metabolism , Piperidines/pharmacokinetics , Receptor, Serotonin, 5-HT2C/chemistry , Serotonin 5-HT2 Receptor Agonists/chemical synthesis , Serotonin 5-HT2 Receptor Agonists/metabolism , Serotonin 5-HT2 Receptor Agonists/pharmacokinetics , Structure-Activity Relationship
13.
Pharm. care Esp ; 22(1): 34-41, 2020. tab, graf
Article in Spanish | IBECS | ID: ibc-196532

ABSTRACT

Se presenta el caso de una paciente vinculada al programa de atención prenatal de una entidad promotora de salud (EPS). Se trata de una femenina de 30 años de edad, con embarazo de 20.5 semanas por fecha de última menstruación, con extrasístoles ventriculares aisladas sin fenómenos repetitivos y taquicardia sinusal inapropiada. A los 31 días de iniciado el tratamiento con metoprolol 25mg cada 12 horas vía oral, el feto presentó disminución progresiva del crecimiento. La restricción del crecimiento intrauterino fue el principal hallazgo durante los sesenta y tres días de uso de metoprolol. Se realizó una evaluación por la sospecha de evento adverso, utilizando el algoritmo de Naranjo y se determina que los efectos de metoprolol en el crecimiento intrauterino fetal eran plausibles (categoría probable). Se realiza la intervención para la suspensión del metoprolol y se observa ganancia de peso progresiva. Se logró un feto con adecuado peso al nacer


This is the case of a patient who was attended by a health care entity. She was a 30-year-old patient and 20.5 weeks pregnant according to the first day of the last menstrual period. She was diagnosed by a cardiologist with isolated ventricular extra-systoles without repetitive phenomena and inappropriate sinus tachycardia. After 31 days being treated with oral metoprolol 25mg bid, the fetus showed a progressive decline of growth rate. The intrauterine growth restriction was the main clinical finding during the sixty-three days of metoprolol consumption. Naranjo algorithm was used to evaluate the causality of the adverse event. It was determined that the effects of metoprolol on fetal intrauterine growth were plausible (probable). Metoprolol was ceased. Then a progressive borned of weight was observed. A fetus with adequate birth weight was achieved


Subject(s)
Humans , Female , Pregnancy , Adult , Fetal Growth Retardation/chemically induced , Metoprolol/adverse effects , Anti-Arrhythmia Agents/adverse effects , Arrhythmia, Sinus/complications , Arrhythmia, Sinus/drug therapy , Gestational Age , Risk Factors
14.
Front Pharmacol ; 10: 907, 2019.
Article in English | MEDLINE | ID: mdl-31507411

ABSTRACT

Hypofunction of the serotonin (5-HT) 5-HT2C receptor (5-HT2CR) has been implicated in a variety of disorders including substance use disorders. As such, approaches to enhance 5-HT2CR signaling display therapeutic potential. In the present study, we show that disruption of the 5-HT2CR interaction with the protein phosphatase and tensin homolog (PTEN) via peptidomimetics enhances 5-HT2CR-mediating signaling in vitro and potentiates selective 5-HT2CR agonists in behavioral rodent models. Overall, the present study provides further evidence that 5-HT2CR activity can be modulated through an allosteric protein-protein interaction. This work provides the groundwork for the continued exploration of protein-protein interactions that can allosterically modulate this critical receptor and other important G protein-coupled receptors (GPCRs) for new therapeutic development through mechanisms that may display clinical utility.

15.
J Med Chem ; 62(1): 288-305, 2019 01 10.
Article in English | MEDLINE | ID: mdl-29620897

ABSTRACT

An impaired signaling capacity of the serotonin (5-HT) 5-HT2C receptor (5-HT2CR) has been implicated in the neurobehavioral processes that promote relapse vulnerability in cocaine use disorder (CUD). Restoration of the diminished 5-HT2CR signaling through positive allosteric modulation presents a novel therapeutic approach. Several new molecules with the 4-alkylpiperidine-2-carboxamide scaffold were designed, synthesized, and pharmacologically evaluated, leading to the discovery of selective 5-HT2CR positive allosteric modulators (PAMs). Compound 16 (CYD-1-79) potentiated 5-HT-evoked intracellular calcium release in cells stably expressing the human 5-HT2CR but not the 5-HT2AR cells. A topographically distinct allosteric site was identified based on the newly solved 5-HT2CR structure. Compound 16 modulated 5-HT2CR-mediated spontaneous ambulation, partially substituted for the training dose of the 5-HT2CR agonist WAY163909, synergized with a low dose of WAY163909 to substitute fully for the stimulus effects of WAY163909, and attenuated relapse vulnerability as assessed in a rodent self-administration model, indicating its therapeutic promise for CUD.


Subject(s)
Amides/chemistry , Drug Design , Receptor, Serotonin, 5-HT2C/chemistry , Allosteric Regulation , Allosteric Site , Amides/chemical synthesis , Amides/pharmacokinetics , Amides/pharmacology , Animals , Azepines/chemistry , CHO Cells , Calcium/metabolism , Cricetinae , Cricetulus , Half-Life , Indoles/chemistry , Locomotion/drug effects , Molecular Docking Simulation , Piperidines/chemistry , Protein Isoforms/chemistry , Protein Isoforms/metabolism , Protein Structure, Tertiary , Rats , Receptor, Serotonin, 5-HT2C/genetics , Receptor, Serotonin, 5-HT2C/metabolism , Serotonin 5-HT2 Receptor Agonists/chemistry , Structure-Activity Relationship
16.
Bioorg Med Chem Lett ; 28(8): 1381-1385, 2018 05 01.
Article in English | MEDLINE | ID: mdl-29555153

ABSTRACT

The approach of tethering together two known receptor ligands, to be used as molecular probes for the study of G protein-coupled receptor (GPCR) systems, has proven to be a valuable approach. Selective ligands that possess functionality that can be used to link to other ligands, are useful in the development of novel antagonists and agonists. Such molecules can also be attached to reporter molecules, such as fluorophores, for the study of GPCR dimerization and its role in signaling. The highly selective serotonin (5-HT) 5-HT2A receptor (5-HT2AR) antagonist M100907 (volinanserin) is of clinical interest in the treatment of neurological and mental health disorders. Here, we synthesized the most active (+)-M100907 enantiomer as well as a series of derivatives that possessed either an alkyne or an azide. The triazole resulting from the dipolar cycloaddition of these groups did not interfere with the ability of the bivalent ligand to act as an antagonist. Thus, we have synthesized a number of compounds which will prove useful in elucidating the role of the 5-HT2AR in the central nervous system.


Subject(s)
Fluorobenzenes/pharmacology , Piperidines/pharmacology , Receptor, Serotonin, 5-HT2A/metabolism , Serotonin 5-HT2 Receptor Antagonists/pharmacology , Alkynes/chemical synthesis , Alkynes/chemistry , Alkynes/pharmacology , Animals , Azides/chemical synthesis , Azides/chemistry , Azides/pharmacology , CHO Cells , Calcium/metabolism , Cricetulus , Fluorobenzenes/chemical synthesis , Fluorobenzenes/chemistry , Piperidines/chemical synthesis , Piperidines/chemistry , Serotonin 5-HT2 Receptor Antagonists/chemical synthesis , Serotonin 5-HT2 Receptor Antagonists/chemistry , Stereoisomerism
17.
ACS Chem Neurosci ; 9(3): 514-521, 2018 03 21.
Article in English | MEDLINE | ID: mdl-29111677

ABSTRACT

The 5-HT2A receptor (5-HT2AR) plays an important role in various neuropsychiatric disorders, including substance use disorder and schizophrenia. Homodimerization of this receptor has been suggested, but tools that allow direct assessment of the relevance of the 5-HT2AR:5-HT2AR homodimer in these disorders are necessary. We chemically modified the selective 5-HT2AR antagonist M100907 to synthesize a series of homobivalent ligands connected by ethylene glycol linkers of varying lengths that may be useful tools for probing 5-HT2AR:5-HT2AR homodimer function. We tested these molecules for 5-HT2AR antagonist activity in a cell line stably expressing the functional 5-HT2AR and quantified a downstream signaling target, activation (phosphorylation) of extracellular regulated kinases 1/2 (ERK1/2), in comparison to in vivo efficacy of altering spontaneous or cocaine-evoked locomotor activity in rats. All of the synthetic compounds inhibited 5-HT-mediated phosphorylation of ERK1/2 in the cellular signaling assay; the potency of the bivalent ligands varied as a function of linker length, with the intermediate linker lengths being the most potent. The Ki values for the binding of bivalent ligands to 5-HT2AR were only slightly lower than the values for the parent (+)-M100907 compound, but significant selectivity for 5-HT2AR over 5-HT2BR or 5-HT2CR binding was retained. In addition, the 11-atom-linked bivalent 5-HT2AR antagonist (2 mg/kg, intraperitoneally) demonstrated efficacy on par with that of (+)-M100907 in inhibiting cocaine-evoked hyperactivity. As we develop further strategies for ligand-evoked receptor assembly and analyses of diverse signaling and functional roles, these novel homobivalent 5-HT2AR antagonist ligands will serve as useful in vitro and in vivo probes of 5-HT2AR structure and function.


Subject(s)
Calcium/metabolism , Cocaine/pharmacology , Receptor, Serotonin, 5-HT2A/drug effects , Serotonin 5-HT2 Receptor Antagonists/pharmacology , Phosphorylation/drug effects , Protein Binding/drug effects , Receptor, Serotonin, 5-HT2A/metabolism , Signal Transduction/drug effects
19.
Rev.Fac.Med.Univ.Nac.Nordeste ; 37(3): 39-47, 2017.
Article in Spanish | LILACS | ID: biblio-1382156

ABSTRACT

La Diabetes Mellitus es una enfermedad crónica las complicaciones asociadas a la misma se vinculan con el grado de conocimiento que tenga elpaciente sobre su enfermedad. Se realizó un estudio cuantitativo, transversal y descriptivo con el objetivo de estimar el grado de conocimiento sobre Diabetes relacionándola con edad, sexo, nivel de instrucción, situación laboral, estado civil, situaciónde convivencia, presencia o no de antecedentes de Diabetes de tipo II en familiares directos y tipo de tratamiento que recibían. La población en estudio fue una muestra de 90 pacientes controlados en el servicio de Endocrinología del Hospital "José F. de San Martin", durante el año 2016. Se analizó el grado de conocimiento mediante un instrumento basado en un cuestionario realizado por la Universidad de Michigan (EUA) y un cuestionario de Diabetes ECODI (Escala de conocimientos de Diabetes). Las operaciones estadísticas utilizadas fueron porcentajes y promedios en el programa "Excel".RESULTADOSEl 69% de los pacientes encuestados obtuvo un grado de conocimiento aceptable; de estos la mayoría no tenían antecedentes de Diabetes, eran adultos maduros (36 a 59años de edad), pertenecían al sexo femenino, tenían riesgo educativo (personas con escolaridad básica incompleta), trabajaban de forma independiente, eran solteros, vivían solos y tenían la alimentación como principal tratamiento.DISCUSIÓNExisten estudios antecedentes que demuestran que el grado de conocimientos de pacientes diabéticos sobre su enfermedad influye directamente en el autocuidado de los mismos. Este estudio evidenció que el grado de conocimiento sobre su enfermedad es aceptable en los sujetos estudiados resultados similares a lo obtenido por Rodríguez en Buenos Aires Argentina 2015.CONCLUSIONESSe encontró un nivel de conocimientos aceptable, se sugiere implementar talleres supervisados para evaluar autocuidado, estrategias demostrativas sobre complicaciones para concientizar y lograr mantener un buen nivel de conocimientos o mejorarlo


ABSTRACTDiabetes Mellitus is a chronic disease, the complications associated with it are related to the degree of knowledge that the patient has about his illness.A quantitative, cross -sectional and descriptive study was carried out to estimate the level of knowledge about Diabetes related to age, sex, educational level, employment status, marital status, coexistence situation, presence or absence of type II diabetes In direct relatives and type of treatment that they received. The study population was a sample of 90 patients controlled in the service of Endocrinology of the Hospital "José F. de San Martin",during the year 2016. The degree of knowledge was analyzed through an instrument based on a questionnaire carried out by the University of Michigan (USA) and an ECODI (Diabetes Knowledge Scale) questionnaire. The statistical operations used were percentages and averages in the "Excel" program.RESULTS69% of the patients surveyed obtained an acceptable level of knowledge; Most of them had no history of diabetes, were mature adults (36-59 years of age), were female, had educational risk (people with incomplete basic schooling), worked independently, were single, lived alone and had Feeding as the main treatment.DISCUSSIONThere are previous studies that show that the degree of knowledge of diabetic patients about their disease directly influences their self-care. This study evidenced that the degree of knowledge about its disease is acceptable in the studied subjects results similar to the one obtained by Rodríguez in Buenos Aires Argentina 2015. CONCLUSIONSAn acceptable level of knowledge was found, it is suggested to implement supervised workshops to evaluate self-care, demonstrative strategies on complications to raise awareness and to maintain a good level of knowledge or improve it


SumárioDiabetes mellitus é uma doença complicações crónicas associadas a ela estão ligados ao grau de conhecimento que tem do paciente sobre sua doença.quantitativa, transversal e estudo descritivo foi realizado para estimar o grau de conhecimento sobre Diabetes relacionando-a com a idade, sexo, nível de escolaridade, situação de emprego, estado civil, situação que vivem, presença ou ausência de uma história de Diabetes Tipo II na família imediata e tipo de tratamento que receberam. A população do estudo foi uma amostra de 90 pacientes tratados no Serviço de Endocrinologia do Hospital "José F. de San Martin" durante 2016. O nível de conhecimento foi analisada por um modelo baseado em um questionário realizado pela Universidade de instrumento Michigan (EUA) e um questionário ECoDI Diabetes (Escala conhecimento Diabetes). operações estatísticas utilizadas foram percentagens e médias programa "Excel".RESULTADOS69% dos pacientes pesquisados recebeu um grau aceitável de conhecimento; destes a maioria não tinha história de diabetes, fossem adultos maduros (36-59 anos de idade) eram do sexo feminino, tinha de risco educacional (pessoas com ensino fundamental incompleto), trabalhando de forma independente, eles eram solteiros, vivia sozinho e tinha alimentos como tratamento primário.DISCUSSÃOHá estudos precedentes que mostram que o grau de conhecimento dos pacientes diabéticos acerca de sua doença afeta diretamente a auto-cuidado deles. Este estudo mostrou que o grau de conhecimento sobre a sua doença é aceitável nos assuntos semelhantes aos obtidos por Rodriguez em Buenos Aires Argentina 2015 resultados.CONCLUSÕESum nível aceitável de conhecimento foi encontrado, sugere-se a implementação de oficinas supervisionadas para avaliar as estratégias de auto-atendimento complicações manifestação para sensibilizar e conseguir manter um bom nível de conhecimento ou melhorá-lo


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Self Care , Chronic Disease , Diabetes Mellitus/prevention & control , Patients , Risk , Surveys and Questionnaires/statistics & numerical data , Knowledge
20.
Drug Metab Pers Ther ; 31(1): 41-6, 2016 Mar.
Article in English | MEDLINE | ID: mdl-26845729

ABSTRACT

BACKGROUND: Folate metabolism plays an essential role in the processes of DNA synthesis and methylation. Deviations in the folate flux resulting from single-nucleotide polymorphisms in genes encoding folate-dependent enzymes may affect the susceptibility to leukemia. This case-control study aimed to assess associations among MTHFR (C677T, A1298C) and TPMT (*2, *3A) mutations as well as to evaluate the synergistic effects of combined genotypes for both genes. Therefore, these genetic variants may lead to childhood acute lymphoblastic leukemia (ALL) susceptibility, in a Mexican population study. METHODS: DNA samples obtained from 70 children with ALL and 152 age-matched controls (range, 1-15 years) were analyzed by real-time reverse transcription polymerase chain reaction (RT-qPCR) to detect MTHFR C677T and A1298C and TPMT*2 and TPMT*3A genotypes. RESULTS: The frequency of the MTHFR A1298C CC genotype was statistically significant (odds ratio [OR], 6.48; 95% 95% confidence intervals [CI], 1.26-33.2; p=0.025). In addition, the combined 677CC+1298AC genotype exhibited a statistically significant result (OR, 0.23; 95% CI, 0.06-0.82; p=0.023). No significant results were obtained from the MTHFR (C677T CT, C677T TT) or TPMT (*2, *3A) genotypes. More importantly, no association between the synergistic effects of either gene (MTHFR and/or TPMT) and susceptibility to ALL was found. CONCLUSIONS: The MTHFR A1298C CC genotype was associated with an increased risk of developing childhood ALL. However, a decreased risk to ALL with the combination of MTHFR 677CC+1298AC genotypes was found.


Subject(s)
Genetic Predisposition to Disease , Methylenetetrahydrofolate Reductase (NADPH2)/genetics , Methyltransferases/genetics , Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics , Adolescent , Case-Control Studies , Child , Child, Preschool , Female , Genotype , Humans , Infant , Male , Mexico , Mutation , Polymorphism, Single Nucleotide , Reverse Transcriptase Polymerase Chain Reaction
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