نتایج جستجو برای: ketanserin

تعداد نتایج: 604  

Journal: :General and comparative endocrinology 2005
Deborah I Lutterschmidt Robert T Mason

Hormonal and behavioral responses to a stressor depend on many factors, including the influence of other hormones. We examined the role of melatonin in modulating hormonal responses to capture stress in two populations of male garter snakes, Thamnophis sirtalis. Studies of red-sided (T. sirtalis parietalis) and red-spotted (T. sirtalis concinnus) garter snakes were conducted in the field with f...

Journal: :Shock 2005
Ching-Ping Chang Sheng-Hsien Chen Mao-Tsun Lin

We assess the effects of ipsapirone (a 5-HT1A receptor agonist), ketanserin (a 5-HT2A receptor antagonist), (-)-pindolol (a 5-HT1A receptor antagonist), and DOI (a 5-HT2A receptor agonist) on heatstroke in a rat model. Animals, under urethane anesthesia, were exposed to high ambient temperature of 42 degrees C until mean arterial pressure and local cerebral blood flow in the striatum began to d...

2005
Larry R. Bush William B. Campbell Katherin Kern Gregory D. Tilton Phillip Apprill Juliet Ashton James Schmitz Maximilian Buja James T. Willerson

Platelets possess a2-adrenergic and serotonergic (5-hydroxytryptamine) receptors which are thought to mediate the in vitro proaggregatory effects of epinephrine and serotonin, respectively. However, their importance in platelet aggregation in vivo is uncertain. In the present study, we evaluate the ability of yohimbine and ketanserin, relatively selective o2-adrenergic and serotonin antagonists...

Journal: :The American journal of physiology 1998
Guo Qi Teng James Williams Lubo Zhang Ralph Purdy William J Pearce

To test the hypothesis that variations in cerebrovascular reactivity to 5-HT among arteries of different size or type, during maturation, or during acclimatization to high altitude involve differences in serotonergic receptor subtype, we determined relative agonist potency orders and antagonist affinities in common carotid (Com), main branch middle cerebral (Main), and second branch middle cere...

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