Consulta: subjectFacets:"Cardiovascular system"
Registros recuperados: 8
Data/hora: 06/06/2024 02:46:41

Coronary Irrigation in Puma concolor (Carnivora: Felidae)
Provedor de dados: 77
Autores: Viotto-Souza,Wilson; Souza Junior,Paulo de; Carvalho,Amarílis Díaz de; Abidu-Figueiredo,Marcelo; Santos,André Luiz Quagliatto.
This study described the anatomy of the coronary arteries and their main branches in Puma concolor. The hearts of six individuals of Puma concolor, were analyzed. The A. coronaria sinistra formed the ramus interventricularis paraconalis and the ramus circunflexus. A ramus septal was formed close to the origin of the ramus interventricularis paraconalis and yielded from six to eight ventricular branches. The circumflex branch originated from two to five atrial branches and from three to seven ventricular branches. The right coronary artery formed two to six atrial branches, and four to nine ventricular branches. In half of the individuals, an accessory coronary artery was identified as the first branch of the right coronary artery. In all individuals, the...
Tipo: Journal article
Palavras-chave: Cardiovascular system; Carnivores; Coronary dominance; Cougar.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000300021

Physical and electrocardiographic evaluation of horses used for wagon traction
Provedor de dados: 45
Autores: Bomfim,M.M.; Sattin,W.R.; Carvalho,S.F.; Gobesso,A.A.O.; Dória,R.S.G.; Leite-Dellova,D.C.A.
ABSTRACT The objective of this research was to evaluate the electrocardiogram (ECG) of horses used for wagon traction and to compare the results with the parameters obtained from inactive horses or horses submitted to a training routine. Fifty-six 3-15-year-old healthy horses (22 females and 34 males) were divided into three groups: control (without a work routine; N=21), wagon traction (N=25) and athlete (N=10) and submitted to physical examination and ECG (at rest). The rhythm, heart rate (HR), amplitude and duration of ECG waveforms and intervals were obtained from the frontal plane and base-apex leads. Heart score (HS) was calculated using the arithmetic mean of QRS duration in LI, LII and LIII. Measurements of ECG waves were smaller in control group,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ECG; Equine; Cart horses; Cardiovascular system; Heart score.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200371

Effect of Camellia sinensis teas on left ventricular hypertrophy and insulin resistance in dyslipidemic mice
Provedor de dados: 56
Autores: Ferreira,M.C.L.; Lima,L.N.; Cota,L.H.T.; Costa,M.B.; Orsi,P.M.E.; Espíndola,R.P.; Albanez,A.V.; Rosa,B.B.; Carvalho,M.G.S.; Garcia,J.A.D.
The control of dyslipidemia using plants is an important subject of studies since it has numerous benefits in cardiovascular protection. The objective of this study was to evaluate the effect of three Camellia sinensis L. teas (green, red, and white) on left ventricular hypertrophy and insulin resistance in low-density lipoprotein receptor knockout (LDLr-/-) mice fed a high-fat diet. The LDLr-/- mice were divided into four experimental groups: Group C: standard feed; Group CT: standard feed and three teas, Group HL: high-fat feed; HLT Group: high-fat feed and three teas. The three types of tea (green, red, and white) originated from different processing of the Camellia sinensis L. plant, and were administered associated once a day at a dose of 25 mg/kg by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipids; Cardiovascular system; Tea; Glucose; Insulin.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2020000500607

Sertraline inhibits formalin-induced nociception and cardiovascular responses
Provedor de dados: 56
Autores: Santuzzi,C.H.; Futuro Neto,H.A.; Pires,J.G.P.; Gonçalves,W.L.S.; Tiradentes,R.V.; Gouvea,S.A.; Abreu,G.R.
The objective of the present study was to determine the antihyperalgesic effect of sertraline, measured indirectly by the changes of sciatic afferent nerve activity, and its effects on cardiorespiratory parameters, using the model of formalin-induced inflammatory nociception in anesthetized rats. Serum serotonin (5-HT) levels were measured in order to test their correlation with the analgesic effect. Male Wistar rats (250-300 g) were divided into 4 groups (N = 8/per group): sertraline-treated group (Sert + Saline (Sal) and Sert + Formalin (Form); 3 mg·kg-1·day-1, ip, for 7 days) and saline-treated group (Sal + Sal and Sal + Form). The rats were injected with 5% (50 µL) formalin or saline into the right hind paw. Sciatic nerve activity was recorded using a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sertraline; Formalin-induced pain; Antinociceptive effect; Cardiovascular system; Sciatic nerve activity.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000100008

Hemodynamic mechanisms of the attenuated blood pressure response to mental stress after a single bout of maximal dynamic exercise in healthy subjects
Provedor de dados: 56
Autores: Neves,F.J.; Carvalho,A.C.G.; Rocha,N.G.; Silva,B.M.; Sales,A.R.K.; Castro,R.R.T. de; Rocha,J.D.; Thomaz,T.G.; Nóbrega,A.C.L.
To determine the hemodynamic mechanisms responsible for the attenuated blood pressure response to mental stress after exercise, 26 healthy sedentary individuals (age 29 ± 8 years) underwent the Stroop color-word test before and 60 min after a bout of maximal dynamic exercise on a treadmill. A subgroup (N = 11) underwent a time-control experiment without exercise. Blood pressure was continuously and noninvasively recorded by infrared finger photoplethysmography. Stroke volume was derived from pressure signals, and cardiac output and peripheral vascular resistance were calculated. Perceived mental stress scores were comparable between mental stress tests both in the exercise (P = 0.96) and control (P = 0.24) experiments. After exercise, the blood pressure...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cardiovascular system; Blood pressure; Exercise test; Stroop test.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000700007

Effects of different levels of positive airway pressure on breathing pattern and heart rate variability after coronary artery bypass grafting surgery
Provedor de dados: 56
Autores: Pantoni,C.B.F.; Di Thommazo,L.; Mendes,R.G.; Catai,A.M.; Luzzi,S.; Amaral Neto,O.; Borghi-Silva,A.
The application of continuous positive airway pressure (CPAP) produces important hemodynamic alterations, which can influence breathing pattern (BP) and heart rate variability (HRV). The aim of this study was to evaluate the effects of different levels of CPAP on postoperative BP and HRV after coronary artery bypass grafting (CABG) surgery and the impact of CABG surgery on these variables. Eighteen patients undergoing CABG were evaluated postoperatively during spontaneous breathing (SB) and application of four levels of CPAP applied in random order: sham (3 cmH2O), 5 cmH2O, 8 cmH2O, and 12 cmH2O. HRV was analyzed in time and frequency domains and by nonlinear methods and BP was analyzed in different variables (breathing frequency, inspiratory tidal volume,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Continuous positive airway pressure; Cardiovascular system; Autonomic nervous system; Ventilation; Coronary artery bypass.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000100006

Focal adhesion kinase signaling in cardiac hypertrophy and failure
Provedor de dados: 56
Autores: Franchini,K.G.; Clemente,C.F.M.Z.; Marin,T.M.
Focal adhesion kinase (FAK) is a broadly expressed tyrosine kinase implicated in cellular functions such as migration, growth and survival. Emerging data support a role for FAK in cardiac development, reactive hypertrophy and failure. Data reviewed here indicate that FAK plays a critical role at the cellular level in the responses of cardiomyocytes and cardiac fibroblasts to biomechanical stress and to hypertrophic agonists such as angiotensin II and endothelin. The signaling mechanisms regulated by FAK are discussed to provide insight into its role in the pathophysiology of cardiac hypertrophy and failure.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Focal adhesion kinase; Mechanical signaling; Cardiovascular system; Signal transduction.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000100008

Gap junctions in the cardiovascular and immune systems
Provedor de dados: 56
Autores: Rozental,R.; Campos-de-Carvalho,A.C.; Spray,D.C.
Gap junctions are clusters of intercellular channels directly connecting the cytoplasm of adjacent cells. These channels are formed by proteins named connexins and are present in all metazoan organisms where they serve diverse functions ranging from control of cell growth and differentiation to electric conduction in excitable tissues. In this overview we describe the presence of connexins in the cardiovascular and lympho-hematopoietic systems giving the reader a summary of the topics to be covered throughout this edition and a historical perspective of the discovery of gap junctions in the immune system.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gap junctions; Cardiovascular system; Immune system; Connexins.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000400001