نتایج جستجو برای: baroreflex

تعداد نتایج: 4353  

Ali Mohammad Moradi, Ali Nasimi, Fatemeh Kharazmi, Mardomak Ravari, Masoumeh Hatam,

Introduction: The bed nucleus of the stria terminalis (BST) is a limbic structure which is involved in cardiovascular regulation and baroreflex modulation. The presence of cholinergic synaptic terminalis with high level of muscarinic receptors in the BST has been demonstrated. This study was performed to find the role of the cholinergic muscarinic receptor in cardiovascular response and baro...

Journal: :physiology and pharmacology 0
ali nasimi dep. of physiologyfaculty of medicine ali mohammad moradi dep. of physiologyfaculty of medicine, shahid nasser street mardomak ravari dep. of physiologyfaculty of medicine, shahid nasser street fatemeh kharazmi dep. of physiologyfaculty of medicine, shahid nasser street masoumeh hatam dep. of physiologyfaculty of medicine, shahid nasser street

introduction: the bed nucleus of the stria terminalis (bst) is a limbic structure which is involved in cardiovascular regulation and baroreflex modulation. the presence of cholinergic synaptic terminalis with high level of muscarinic receptors in the bst has been demonstrated. this study was performed to find the role of the cholinergic muscarinic receptor in cardiovascular response and baroref...

رشیدی نژاد, حمیدرضا, رفعتی, علی, میرزا, مهشب, پورشانظری, علی اصغر,

Background: Epidemiological studies suggested that incidence of cardiovascular diseases in menopause women is more than their nonmenopausal period. The cardioprotective role of estrogen may be responsible for some of these effects. In the present study we evaluated the role of female sex hormones on baroreflex sensitivity in acute hypertension state of rat. Materials and Methods: This was an...

Journal: :Neurology 2021

#### Notable in Neurology This Week issue features a Research Article that investigates arousal mechanisms patients with severe traumatic brain injury; another examines the association between pathologic variants CHRNA3 gene and familial autonomic ganglionopathy diffuse failure. An American Academy of Position Statement outlines ethical considerations diagnosis care people dementia. ### Natural...

Journal: :physiology and pharmacology 0
mehdi nematbakhsh water & electrolytes research center, isfahan university of medical sciences, isfahan, iran fariba azarkish water & electrolytes research center, isfahan university of medical sciences, isfahan, iran ali-asghar poorshahnazari department of physiology, isfahan university of medical sciences, isfahan, iran

introduction: cisplatin (cp) therapy may disturb cardiovascular system control. the objective of this study was to find baroreflex sensitivity (brs) in cp-induced nephrotoxicity in rats. materials and methods: eighteen male and female wistar rats were randomly assigned to two groups treated with cp (2.5 mg/kg/day) and the vehicle, for five consecutive days, and then were subjected to surgical p...

شریعتی , مهدی , صریحی, عبدالرحمن , پورشانظری, علی اصغر ,

The previous studies have shown that the endogenous opiate system depress the baroreflex sensitivity in morphine dependent persons. Nucleus Tractus Soloitarii(NTS) is the main termination site of baroreceptor afferent neurons. The aim of this study was to determine the role of electrical stimulation of Nucleus Tractus    Soloitarii on baroreflex sensitivity in morphine...

2011
Vitor E. Valenti Luiz Carlos de Abreu Hugo Macedo Junior Oseas F. Moura Filho Celso Ferreira

Previous studies showed that a proportion of normotensive Sprague-Dawley rats spontaneously exhibit lower baroreflex sensitivity. However, investigations have not yet been carried out on Wistar rats. We aimed to compare baroreflex sensitivity among rats from the same strain and the same laboratory. Male Wistar normotensive rats (300-400g) were studied. Cannulas were inserted into the abdominal ...

2010
Vitor E. Valenti Luiz Carlos de Abreu Caio Imaizumi Márcio Petenusso Celso Ferreira

OBJECTIVES A subset of normotensive Sprague-Dawley rats show lower baroreflex sensitivity; however, no previous study investigated whether there are differences in baroreflex sensitivity within this subset. Our study compared baroreflex sensitivity among conscious rats of this specific subtype. METHODS Male Wistar Kyoto (WKY) rats (16 weeks old) were studied. Cannulas were inserted into the a...

Journal: :Circulation 2002
Jens Jordan Jens Tank John R Shannon Andre Diedrich Axel Lipp Christoph Schröder Guy Arnold Arya M Sharma Italo Biaggioni David Robertson Friedrich C Luft

BACKGROUND The overall effect of vasoactive drugs on blood pressure is determined by a combination of the direct effect on vascular tone and an indirect baroreflex-mediated effect, a baroreflex buffering of blood pressure. Differences in baroreflex function affect the responsiveness to vasoactive medications, particularly baroreflex buffering of blood pressure; however, the magnitude is not kno...

Journal: :Hypertension 2003
Ruth D Lipman Julie K Salisbury J Andrew Taylor

Spontaneously occurring, parallel fluctuations in arterial pressure and heart period are frequently used as indices of baroreflex function. Despite the convenience of spontaneous indices, their relation to the arterial baroreflex remains unclear. Therefore, in 97 volunteers, we derived 5 proposed indices (sequence method, alpha-index, transfer function, low-frequency transfer function, and impu...

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