منابع مشابه
The Catecholamine–Cytokine Balance
Cytokines are involved both in various immune reactions and in controlling certain events in the central nervous system (CNS). In our earlier studies, it was shown that monoamine neurotransmitters, released in stress situations, represent a tonic sympathetic control on cytokine production and on the balance of proinflammatory/anti-inflammatory cytokines. Basic and clinical studies have provided...
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Cardiac hemodynamic studies during control resting state and isoproterenol infusion were performed on five patients with constrictive pericarditis. During isoproterenol infusion, stroke volume increased by 60%, while there was no significant change in pulmonary wedge and right atrial mean pressures. The relatively fixed filling pressure is the indirect evidence of fixed diastolic size of the he...
متن کاملCatecholamine-stimulated GTPase Cycle
The regulation of the intermediary steps of the catecholamine-stimulated GTPase cycle by &adrenergic agonists and Mg2+ was investigated using unilamellar phosphatidylethanolaminephosphatidylserine vesicles that contained purified &adrenergic receptor and the stimulatory GTP-binding protein of the adenylate cyclase system, G. The steady-state turnover number of the agonist-stimulated GTPase, nor...
متن کاملCatecholamine Synthesis in Rabbits
Norepinephrine synthesis was determined in the heart and adrenals of rabbits made hypertensive by complete denervation of the carotid sinuses and aortic arch. There was a 24% reduction of norepinephrine concentration in the left ventricle 3 weeks after denervation, despite evidence of enhanced synthesis as determined by three methods: (1) an 18% increase in apparent synthesis rates (from 0.76 t...
متن کاملPlasma Catecholamine Modulation
We measured a2-adrenoreceptor density as well as affinity for and sensitivity to agonist on intact platelets of normotensive and hypertensive subjects before and after physiological increases in plasma catecholamines. In normotensives, posture-induced rises in plasma catecholamines correlated with reduced C2-adrenoreceptor agonist affinity and fewer high affinity state receptors. Platelet aggre...
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ژورنال
عنوان ژورنال: Journal of Nihon University Medical Association
سال: 2013
ISSN: 0029-0424,1884-0779
DOI: 10.4264/numa.72.250