methanolic extract of whole plant of amaranthus viridis l (meav), was screened for antinociceptive activity using acetic acid induced writhing test, hot plate test and tail immersion test in mice. in a similar way a screening exercise was carried out to determine the antipyretic potential of the extract using yeast induced pyrexia method in rats. administration of the extracts was applied to bo...

The mechanisms involved in the effects of estrogen on arterial smooth muscle contractility are very complex and not fully clarified. Therefore, the aim of this paper was to examine the mechanisms of estrogen-induced relaxation of the rat tail artery and, specifically, how pulmonary hypertension affects this action. We used male rats and performed experiments on isolated tail arteries in a contr...

The present study was carried out to elucidate the potential of, chloroform extract of Pandanus (P.) fascicularis Lamk (Family-Pandanaceae) leaves on antinociceptive, behavioral study and antiinflammatory effects using various animal models The dried, powdered leaves of, P. fascicularis were extracted successively with petroleum ether (60 80°C) and chloroform in soxhlet apparatus. The chlorofor...

BACKGROUND Diffuse noxious inhibitory control (DNIC) is thought to be mediated by neural networks in supraspinal brain structures. The descending antinociceptive system (DAS) is an important component of the DNIC neural network, but the precise structure of the neural network and the related neurotransmitters have not been examined. METHODS The study was designed to examine whether systemic a...

CE9 is a posterior-tail domain-specific integral plasma membrane glycoprotein of the rat testicular spermatozoon. During epididymal maturation, CE9 undergoes endoproteolytic processing and then redistributes into the anterior-tail plasma membrane domain of the spermatozoon (Petruszak, J. A. M., C. L. Nehme, and J. R. Bartles. 1991. J. Cell. Biol. 114:917-927). We have determined the sequence of...

Tail blood flow (TBF) in the rat markedly increases during sympathetic withdrawal such as hyperthermia or lumbar sympathetic blockade. However, a long-term alteration of TBF after chronic sympathetic denervation is not well understood. In the present study, TBF following lumbar sympathectomy (LSX) was observed to ascertain whether subsequent changes in TBF occur in the absence of the sympatheti...

picralima nitida is used traditionally for management of cough. this study, therefore, investigated the antitussive, expectorant, and analgesic properties of the ethanolic seed extract of picralima nitida (pne), and ascertained its safety for use. presence of secondary metabolites, and safety of pne (10-2000 mg/kg) were evaluated by preliminary phytochemical screening, and by irwin’s test respe...

Hormone sensitive lipase is thought to be the rate-limiting enzyme of lipolysis; phosphatidate phosphohydrolase that of lipogenesis. Both these enzyme systems were studied in vitro with the addition of epinephrine. The results show that: (a) hormone sensitive lipase is four times more active in rat epididymal fat than in sheep tail fat and (b) sheep omental fat is twice as active as tail fat. (...

Transgenic experiments can be used to test the extent to which genes from different species can be swapped around, but still retain function, and be appropriately regulated. A vector has been developed that directs the expression of foreign genes to specific groups of vasopressin (VP) hypothalamic neurons in transgenic rats. Using this vector, we have expressed the bovine VP (bVP) RNA in the ra...