Consulta: creatorFacets:"Coimbra,C.C."
Registros recuperados: 5
Data/hora: 01/06/2024 10:42:20

Effect of pinealectomy, adrenalectomy, pinealectomy plus adrenalectomy upon the quantification of spermatogenic cells of adult rats
Provedor de dados: 45
Autores: Castro,A.C.S.; Queiroz,G.F.; Nogueira,J.C.; Coimbra,C.C.; Reis,A.M.; Marubayashi,U.; Yamasaki,K.
The objectives of this study were to evaluate the effects of pinealectomy, adrenalectomy and pinealectomy-adrenalectomy upon the quantification of spermatogenic cells of rats. As such, 32 adult Wistar rats with a mean body weight of 331.7± 15.5g were assigned into one of the following treatments: (a) a sham-operated control group, consisting of nine animals; (b) ten pinealectomized animals; (c) seven adrenalectomized animals and (d) six pinealectomized plus adrenalectomized animals. No significant differences were observed between groups for the following parameters: body, testes, prostate and seminal vesicle weights, seminiferous tubular diameter, number of cells per seminiferous tubular cross sections (primary spermatocytes at pachytene, round...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spermatogenesis; Pinealectomy; Adrenalectomy; Rat.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352002000300008

Inflammatory cytokines and plasma redox status responses in hypertensive subjects after heat exposure
Provedor de dados: 56
Autores: Fonseca,S.F.; Mendonça,V.A.; Teles,M.C.; Ribeiro,V.G.C.; Tossige-Gomes,R.; Neves,C.D.C.; Rocha-Vieira,E.; Leite,L.H.R.; Soares,D.D.; Coimbra,C.C.; Lacerda,A.C.R.
Hypertension is characterized by a pro-inflammatory status, including redox imbalance and increased levels of pro-inflammatory cytokines, which may be exacerbated after heat exposure. However, the effects of heat exposure, specifically in individuals with inflammatory chronic diseases such as hypertension, are complex and not well understood. This study compared the effects of heat exposure on plasma cytokine levels and redox status parameters in 8 hypertensive (H) and 8 normotensive (N) subjects (age: 46.5±1.3 and 45.6±1.4 years old, body mass index: 25.8±0.8 and 25.6±0.6 kg/m2, mean arterial pressure: 98.0±2.8 and 86.0±2.3 mmHg, respectively). They remained at rest in a sitting position for 10 min in a thermoneutral environment (22°C) followed by 30 min...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypertension; Heat; Cytokines; Redox status.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000300701

The hyperglycemia induced by angiotensin II in rats is mediated by AT1 receptors
Provedor de dados: 56
Autores: Machado,L.J.C.; Marubayashi,U.; Reis,A.M.; Coimbra,C.C.
We have shown that the renin-angiotensin system (RAS) is involved in glucose homeostasis during acute hemorrhage. Since almost all of the physiological actions described for angiotensin II were mediated by AT1 receptors, the present experiments were designed to determine the participation of AT1 receptors in the hyperglycemic action of angiotensin II in freely moving rats. The animals were divided into two experimental groups: 1) animals submitted to intravenous administration of angiotensin II (0.96 nmol/100 g body weight) which caused a rapid increase in plasma glucose reaching the highest values at 5 min after the injection (33% of the initial values, P&amp;lt;0.01), and 2) animals submitted to intravenous administration of DuP-753 (losartan), a...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Glycemia; Angiotensin II; DuP-753; AT1; Receptor.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998001000018

Whole-body vibration decreases the proliferativeb response of TCD4+ cells in elderly individuals with knee osteoarthritis
Provedor de dados: 56
Autores: Tossige-Gomes,R.; Avelar,N.C.P.; Simão,A.P.; Neves,C.D.C.; Brito-Melo,G.E.A.; Coimbra,C.C.; Rocha-Vieira,E.; Lacerda,A.C.R.
The aim of this study was to investigate the effect of adding whole-body vibration (WBV; frequency = 35 to 40 Hz; amplitude = 4 mm) to squat training on the T-cell proliferative response of elderly patients with osteoarthritis (OA) of the knee. This study was a randomized controlled trial in which the selected variables were assessed before and after 12 weeks of training. Twenty-six subjects (72 ± 5 years of age) were divided into three groups: 1) squat training with WBV (WBV, N = 8); 2) squat training without WBV (N = 10), and 3) a control group (N = 8). Women who were ≥60 years of age and had been diagnosed with OA in at least one knee were eligible. The intervention consisted of 12 uninterrupted weeks of squatting exercise training performed 3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vibratory platform; Lymphocyte; Proliferation; Elderly; Osteoarthritis.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012001200022

Physical exercise-induced fatigue: the role of serotonergic and dopaminergic systems
Provedor de dados: 56
Autores: Cordeiro,L.M.S.; Rabelo,P.C.R.; Moraes,M.M.; Teixeira-Coelho,F.; Coimbra,C.C.; Wanner,S.P.; Soares,D.D.
Brain serotonin and dopamine are neurotransmitters related to fatigue, a feeling that leads to reduced intensity or interruption of physical exercises, thereby regulating performance. The present review aims to present advances on the understanding of fatigue, which has recently been proposed as a defense mechanism instead of a “physiological failure” in the context of prolonged (aerobic) exercises. We also present recent advances on the association between serotonin, dopamine and fatigue. Experiments with rodents, which allow direct manipulation of brain serotonin and dopamine during exercise, clearly indicate that increased serotoninergic activity reduces performance, while increased dopaminergic activity is associated with increased performance....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brain; Lethargy; Monoamines; Performance; Physical activity; Reward.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200301