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1.
Exp Brain Res ; 241(11-12): 2591-2604, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37725136

ABSTRACT

Neuropathic pain (NP) represents a complex disorder with sensory, cognitive, and emotional symptoms. The medial prefrontal cortex (mPFC) takes critical regulatory roles and may change functionally and morphologically during chronic NP. There needs to be a complete understanding of the neurophysiological and psychopharmacological bases of the NP phenomenon. This study aimed to investigate the participation of the infralimbic division (IFL) of the mPFC in chronic NP, as well as the role of the N-methyl-D-aspartic acid receptor (NMDAr) in the elaboration of chronic NP. Male Wistar rats were submitted to the von Frey and acetone tests to assess mechanical and cold allodynia after 21 days of chronic constriction injury (CCI) of the sciatic nerve or Sham-procedure ("false operated"). Electrical neurostimulation of the IFL/mPFC was performed by low-frequency stimuli (20 µA, 100 Hz) applied for 15 s by deep brain stimulation (DBS) device 21 days after CCI. Either cobalt chloride (CoCl2 at 1.0 mM/200 nL), NMDAr agonist (at 0.25, 1.0, and 2.0 nmol/200 nL) or physiological saline (200 nL) was administered into the IFL/mPFC. CoCl2 administration in the IFL cortex did not alter either mechanical or cold allodynia. DBS stimulation of the IFL cortex decreased mechanical allodynia in CCI rats. Chemical stimulation of the IFL cortex by an NMDA agonist (at 2.0 nmol) decreased mechanical allodynia. NMDA at any dose (0.25, 1.0, and 2.0 nmol) reduced the flicking/licking duration in the cold test. These findings suggest that the IFL/mPFC and the NMDAr of the neocortex are involved in attenuating chronic NP in rats.


Subject(s)
Hyperalgesia , Neuralgia , Rats , Male , Animals , N-Methylaspartate/pharmacology , Pain Measurement , Rats, Wistar , Neuralgia/therapy , Receptors, N-Methyl-D-Aspartate/metabolism , Prefrontal Cortex/metabolism
2.
Neuromodulation ; 26(8): 1622-1636, 2023 Dec.
Article in English | MEDLINE | ID: mdl-36057495

ABSTRACT

BACKGROUND AND AIMS: The dysgranula parts of the posterior insular cortex (PIC) stimulation (PICS) has been investigated as a new putative cortical target for nonpharmacologic therapies in patients with chronic and neuropathic pain (NP). This work investigates the neural bases of insula neurostimulation-induced antinociception and glutamatergic neurochemical mechanisms recruited by the PICS in animals with neuropathy. MATERIALS AND METHODS: Male Wistar rats were submitted to the von Frey and acetone tests to assess mechanical and cold allodynia after 21 days of chronic constriction injury (CCI) of the sciatic nerve or Sham procedure ("false operated"). Either the Cascade Blue 3000 MW lysine-fixable dextran (CBD) or the biotinylated dextran amine 3000 MW (BDA) neural tract tracer was microinjected into the PIC. The electrical PICS was performed at a low frequency (20 µA, 100 Hz) for 15 seconds by a deep brain stimulation device. PIC N-methyl-D-aspartate (NMDA) receptors (NMDAR) blockade with the selective antagonist LY235959 (at 2, 4, and 8 nmol/200 nL) followed by PICS was investigated in rats with CCI. RESULTS: PIC sends projections to the caudal pontine reticular nucleus, alpha part of the parvicellular reticular nucleus, dorsomedial tegmental area, and secondary somatosensory cortex (S2). PICS decreased both mechanical and cold allodynia in rats with chronic NP. Blockade of NMDAR in the PIC with LY235959 at 8 nmol attenuated PICS-produced antinociception. CONCLUSION: Neuroanatomic projections from the PIC to pontine reticular nuclei and S2 may contribute to chronic NP signaling. PICS attenuates the chronic NP, and the NMDA glutamatergic system in the PIC may be involved in PICS-induced antinociception in rodents with NP conditions.


Subject(s)
N-Methylaspartate , Neuralgia , Humans , Rats , Male , Animals , N-Methylaspartate/therapeutic use , Hyperalgesia/therapy , Insular Cortex , Rats, Wistar , Neuralgia/drug therapy , Receptors, N-Methyl-D-Aspartate/metabolism , Receptors, N-Methyl-D-Aspartate/therapeutic use
3.
PLoS One ; 17(1): e0258822, 2022.
Article in English | MEDLINE | ID: mdl-35100284

ABSTRACT

Several researchers have attempted to develop coffee plants that are resistant to brown eye spot (BES); however, no coffee cultivars are resistant to the disease. In the present study, a blend of strains from Cercospora coffeicola was inoculated into 19 Brazilian commercial cultivars and 41 accessions from the Germplasm Collection of Minas Gerais to evaluate the genetic resistance ability within the population and select superior genotypes for the breeding program. After predicting the genotypic values of the estudied material, the evaluations number necessary for selecting genotypes with accuracy and efficiency was determined based on the data of severity to BES. The action of defense mechanisms plant was also investigated by assessing the levels of total soluble phenolic compounds and soluble lignin in contrasting genotypes for disease susceptibility. Based on the results, the accession MG 1207 Sumatra, had an intrinsic genetic capacity to maintain low levels of severity to BES. The genotype MG 1207 Sumatra can substantially contribute to the development of new cultivars, which may lead to the reduced use of pesticides. According to the accuracy and efficiency results obtained, four evaluations BES severity are sufficient to achieve accuracy, providing expressive genetic gains. Finally, the levels of lignin and phenolic compounds were not found to be associated with the resistance of coffee genotypes to BES.


Subject(s)
Coffea/genetics , Disease Resistance/genetics , Plant Diseases/genetics , Brazil , Coffea/chemistry , Coffea/metabolism , Genotype , Lignin/metabolism , Phenols/analysis
4.
Biomed Res Int ; 2020: 8635917, 2020.
Article in English | MEDLINE | ID: mdl-32724814

ABSTRACT

Macaca fuscata displays characteristic behaviours, such as stone handling, locomotor behaviour, gait position, and intermittent bipedalism. Differences in characteristic behaviours among primate species/genera could be explained by anatomical details of the body. However, the anatomical details have not been well studied in Macaca fuscata. Arterial models could be one of the anatomical bases for the phylogenetic and functional differences among species, since the arterial supply could be associated with the muscular performance, especially locomotor behaviour. In this study, five thoracic limbs of Macaca fuscata adults were dissected to analyse the vessels. Patterns of arterial distribution in the thoracic limbs of Macaca fuscata were compared with those in other primates. The results indicated that the arterial distribution in the Japanese monkeys was more similar to those in Macaca mulatta and Papio anubis, which is consistent with phylogenetic similarities. However, compared with Papio anubis and other macaques, there were anatomical differences in several points, including (1) the origin of the common, anterior, posterior circumflex, and profunda brachii, and (2) the origins of the collateralis ulnaris artery. The comparative anatomy of the arteries in the forelimb of Macaca fuscata, along with the anatomical studies in other primates, indicated characteristic patterns of brachial artery division and the number of the palmar arches in primates, which is consistent with the phylogenetic division among New World primates, Old World primates, and apes.


Subject(s)
Arteries/anatomy & histology , Forelimb/blood supply , Macaca fuscata/physiology , Anatomy, Comparative/methods , Animals , Female , Gait/physiology , Locomotion/physiology , Macaca mulatta/physiology , Male , Phylogeny
6.
Interface comun. saúde educ ; 17(45): 327-340, abr.-jun. 2013.
Article in Portuguese | LILACS | ID: lil-678216

ABSTRACT

Trata-se de um estudo de caso que analisou o trabalho em equipe multiprofissional em saúde com base no referencial teórico da teoria das conversações de Echeverria e nos critérios de análise construídos por Peduzzi. O campo de estudo foi uma unidade básica de saúde que faz parte da Estratégia Saúde da Família (ESF) no município do Rio de Janeiro, Brasil. Considerou-se como unidade de análise uma equipe de saúde da família, sendo realizadas nove entrevistas semiestruturadas e observação participante de nove reuniões do grupo. Resultados indicam que o trabalho em equipe na ESF emerge como possibilidade para uma prática mais comunicativa e cooperativa na qual os profissionais reconhecem o trabalho do outro e compartilham objetivos, configurando-se como uma pequena rede de conversações.


This paper presents a case study that examined the multiprofessional teamwork in health based on theory of conversations by Echeverria and in the analysis criteria built by Peduzzi. The field of study was a basic health unit that is part of the Familiy Health Strategy (ESF) in the municipality of Rio de Janeiro, Brasil. It was considered as an analysis unit one family health team, and were performed nine semi-structured interviews and nine sessions of participant observation of the team meetings. Results indicate that the teamwork in the ESF emerges as a possibility for a more communicative and cooperative practice in which professionals recognize the other's work and share the goals, setting up as a small network of conversations.


Se trata de un estudio de caso sobre el trabajo en equipo multi-profesional de salud basado en las referencias teóricas de la teoría de las conversaciones de Echeverria y en los criterios de análisis construidos por Peduzzi. El campo donde se realizó el estudio fue una unidad básica de salud que forma parte de la Estrategia de Salud Familiar (ESF) en el municipio de Río de Janeiro, Brasil. Un grupo de salud de la familia se consideró como unidad de análisis, habiéndose realizado nueve entrevistas semi-estructuradas y observación participativa en nueve reuniones del grupo. Los resultados muestran que el trabajo en grupo en la ESF surge como posibilidad para una práctica más comunicativa y cooperativa en la que los profesionales reconocen el trabajo unos de los otros y comparten objetivos, configurándose así en una pequeña red de conversaciones.


Subject(s)
Humans , Male , Female , Patient Care Team , Primary Health Care , National Health Strategies
7.
Rio de Janeiro; s.n; 2011. 135 p. mapas, tab.
Thesis in Portuguese | LILACS | ID: lil-620470

ABSTRACT

Um dos eixos estruturantes para o processo de trabalho na ESF é o trabalhomultiprofissional em equipe. A aposta neste tipo de modalidade de trabalho coletivo se dá no sentido de responder às complexidades do processo de saúde-doença-cuidado a partir de novas relações, mais democráticas, entre população e profissionais etrabalhadores entre si. No entanto, muitas vezes, apenas agrupar diferentes profissionais em uma mesma equipe não tem garantido a mudanças de práticas. Com intuito de analisar o trabalho em equipe multiprofissional de saúde na ESF do município do Rio de Janeiro, partiu-se da definição e tipologia de trabalho em equipe de saúde e de conceitos da teoria das conversações. Foi desenvolvido um estudo de caso considerando como unidade de análise uma equipe de SF com a realização de nove entrevistas semiestruturadase observação participante de nove reuniões de equipe. Para interpretação do material empírico foi utilizada a análise do discurso. Os resultados apontam para características mais próximas da equipe interação, em que há a articulações das ações ea comunicação é entendida e utilizada como um meio de integração social. O trabalho em equipe na ESF surge com um potencial para construção de novas práticas de saúde de modo que a lógica que orienta o trabalho em saúde considere a integralidade, ademocratização das relações de trabalho e a ação comunicativa.


Subject(s)
Humans , Patient Care Team , Primary Health Care , National Health Strategies , Health Strategies , Unified Health System
8.
Rio de Janeiro; s.n; 2009. 60 p. mapas, tab, graf.
Thesis in Portuguese | LILACS | ID: lil-540650

ABSTRACT

(...) Essa pesquisa teve como objetivos: conhecer as características da demanda livre e organizada; identificar de que forma a equipe PCC organiza seu processo de trabalho; identificar a repercussão da demanda livre sobre o processo de trabalho dessa equipe e gerar subsídios a partir dos dados coletados para que a mesma faça ponderações sobre seu processo de trabalho. A presente investigação é um estudo exploratório realizado através da utilização da observação participante, dados secundários sobre a demanda livre obtidos em um livro de acolhimento que a equipe já utiliza diariamente e um instrumento e coleta de dados da demanda organizada que retrate as atividades diárias realizadas pelos profissionais.(...)


Subject(s)
Humans , Health Organizations , Health Services Needs and Demand/organization & administration , Health Services Needs and Demand , Health Personnel/organization & administration , National Health Strategies , User Embracement
9.
Rev Gaucha Enferm ; 23(1): 70-83, 2002 Jan.
Article in Portuguese | MEDLINE | ID: mdl-12593104

ABSTRACT

This study aimed to relate the reasons for interrupting intravenous therapy and the time of in-situ permanence of venous devices. The results obtained showed that in 38 of the 75 punctures performed, the reason to interrupt the venous therapy took place after the end of the therapy and that time of in-situ permanence of peripheral devices varied from 24 to 48 hours. In 15 punctures, in which infiltration was the reason for interruption, the time of permanence was shorter than 24 hours. It is believed that the data gathered in this investigation should be analyzed by nursing professionals, aiming to enhance new educational programs in services related to intravenous therapy.


Subject(s)
Catheterization, Peripheral , Infusions, Intravenous/methods , Catheterization, Peripheral/nursing , Humans , Infusions, Intravenous/nursing , Time Factors
10.
Medicina (Ribeiräo Preto) ; 34(1): 79-84, jan.-mar. 2001. tab, graf
Article in Portuguese | LILACS | ID: lil-306321

ABSTRACT

O desenvolvimento tecnológico da terapia intravenosa impöe ao enfermeiro competência técnica e científica. Este estudo descritivo teve como objetivo relacionar o tempo de permanência in situ dos dispositivos venosos, periféricos com o cuidado de enfermagem. Os dados obtidos apontam que, em 50 por cento das punçöes venosas, com tempo de permanência inferior a 24 h, o grau de cuidado de enfermagem foi insatisfatório, tendo 9,4 por cento delas permanecido in situ por um período superior a 72 h. O tempo médio de permanência do dispositivo venoso periférico, in situ foi de 29,2 h, o que demonstra necessidade de intensificar estudos visando à qualificaçäo do cuidado de enfermagem.


Subject(s)
Humans , Adult , Infusions, Intravenous/adverse effects , Nursing Care , Surgical Procedures, Operative
11.
Rev. latinoam. enferm ; 8(5): 21-7, out. 2000. tab, graf
Article in Portuguese | LILACS, BDENF - Nursing | ID: lil-282918

ABSTRACT

A enfermagem desempenha papel primordial na prevençäo e reduçäo das complicaçöes relacionadas ao acesso venoso. O estudo teve como objetivo o levantamento das complicaçöes decorrentes da terapia intravenosa. Os dados de maior expressividade obtidos foram: 77,3 por cento das punçöes foram realizadas pelo auxiliar de enfermagem; 68 por cento näo usaram luvas durante o procedimento; 60 por cento das punçöes tiveram cuidado de enfermagem insatisfatório; 47 por cento dos dispositivos permaneceram "in situ" de 24 a 72 horas; dentre as complicaçöes, 20 por cento relacionaram-se com infiltraçäo, 5,4 por cento infiltraçäo e hematoma e 5,3 por cento obstruçäo. Os dados sugerem a necessidade de um aprimoramento da equipe de enfermagem relacionado a terapia intravenosa.


Subject(s)
Humans , Surgical Procedures, Operative/nursing , Infusions, Intravenous/adverse effects , Malpractice , Nursing Assistants
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