Insulin (5 to 40 I.U.) produced dose-dependent positive inotropic effect in the isolated rat heart. The responses to insulin were markedly inhibited in the presence of propranolol (1 . 1X10(-6) M). Insulin responses were markedly reduced in reserpine pretreated (5 mg/kg, i.p.) rats. Theophylline (4.4 mM), the phosphodiesterase inhibitor, potentiated the responses to insulin, whereas imidazole (...

Sleep is an important physiological state, but its function and regulation remain elusive. In Drosophila melanogaster, a useful model organism for studying sleep, forward genetic screens have identified important sleep-modulating genes and pathways; however, the results of such screens may be limited by developmental abnormalities or lethality associated with mutation of certain genes. To circu...

The present study established a rat model of post-stroke depression using incomplete ischemia induced by unilateral carotid artery ligation in combination with solitary raising and subcutaneous injection of a small dose of reserpine. After intragastric perfusion with 45 mg/100 g, 15 mg/100 g, and 7.5 mg/100 g of Xingnao Jieyu for 7, 14 and 21 days, neuronal morphology in the frontal lobe and hi...

OBJECTIVE The present study was undertaken to evaluate anti-depressant activity of Myristica fragrans (MS). MATERIALS AND METHODS Male Wistar rats were subjected to imipramine and herbal extract of MS for their antidepressant activity using Forced Swimming Test (FST), Reserpine Reversal Test (RRT), Haloperidol-Induced Catalepsy (HIC), and Pentobarbitone Sleeping Time (PST). RESULTS Administ...

Female spontaneously hypertensive rats (SHR) have more regulatory T cells (Tregs) in their kidneys than males. The goal of this study was to determine the impact of blood pressure (BP) on the renal immune profile. We hypothesize that increases in BP promote a proinflammatory renal T cell and cytokine profile in SHR, although females will have greater hormone-dependent increases in Tregs and mal...

BACKGROUND The antihypertensive reserpine is an indole alkaloid from Rauwolfia serpentina and exerts also profound activity against cancer cells in vitro and in vivo. The present investigation was undertaken to investigate possible modes of action to explain its activity toward drug-resistant tumor cells. MATERIAL AND METHODS Sensitive and drug-resistant tumor cell lines overexpressing P-glyc...

(2002) Prefrontal dopamine D1 receptors and working memory in schizophrenia. A microdialysis study of the in vivo release of 5-HT in the median raphe nucleus of the rat. Br. (1989) An in vivo dialysis and behavioural study of the release of 5-HT by p-chloroamphetamine in reserpine-treated rats. Br. In vivo brain dialysis study of the somatodendritic release of serotonin in the raphe nuclei of t...