نتایج جستجو برای: antagonists
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CONTENTS 1. Introduction 230 2. Concepts of the functional role of striatal dOpaminergic activity 231 2.1. Introduction 231 2.2. The behavioural actions of dopamine in the striatum: unitary or diverse? 231 2.3. Regional differences in the striatal functions revealed by the actions of dopamine 232 2.4. The side to which the striatum's behavioural effects are referred 232 2.4.1. The traditional v...
The insulin-like growth factor I receptor (IGFIR) and HER2 display important signaling interactions in breast cancer. We examined the effect of combinations of antagonists of these receptors using two human breast cancer cell lines: BT474 (HER2+, IGFIR low) and MCF7 (HER2 low, IGFIR high). In BT474 cells, growth was inhibited by HER2 antagonists but not by IGFIR antagonists; however, IGFIR anta...
The transient receptor potential vanilloid-1 (TRPV1) channel is involved in the development and maintenance of pain and participates in the regulation of temperature. The channel is activated by diverse agents, including capsaicin, noxious heat (≥ 43°C), acidic pH (< 6), and endogenous lipids including N-arachidonoyl dopamine (NADA). Antagonists that block all modes of TRPV1 activation elicit h...
Both alpha- and beta-adrenergic antagonists have been utilized in an atempt to discern the site of action of prostaglandin (PG) and tetrahydrocannabinol (THC) in the eye. Both alpha- and beta-adrenergic antagonists (alpha-antagonists, phentolamine and phenoxybenzamine; beta-antagonists, propranolol and sotalol) cuased a dose-dependent reduction in intraocular pressure and blood pressure and inc...
OBJECTIVES To investigate the effects of various muscarinic acetylcholine receptor (mAChR) antagonists, including selective M2 and M3 mAChR antagonists, on bladder overactivity. It has been proposed that the urothelium modulates the activity of bladder afferent pathways. However, the differential roles of mAChR subtypes in local bladder afferent activation remain unclear. METHODS Cystometry w...
BACKGROUND/AIMS Topical beta antagonists are prescribed for glaucoma in approximately 500 000 people in the United Kingdom. The authors have previously shown that topical beta antagonists are associated with an excess incidence of airways obstruction. They examined whether selective topical beta antagonists are associated with excess airways obstruction. METHODS A historical cohort study was ...
Blockage of the renin-angiotensin system (RAS) is now recognized as an effective approach to the treatment of hypertension and congestive heart failure. Today, it is possible to antagonize the effects of angiotensin II (AT-II) more specifically by blocking its receptors by using nonpeptide receptor antagonists. AT-II-receptor antagonists were developed as agents that would more completely block...
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