the effect of ephedrine at 0 (e0c0, n = 10), 8 (e8c0, n = 10) and 10 (e10c0, n = 10) mg per kg metabolic body weight or mixture of ephedrine/caffeine, at doses of 8 mg ephedrine/80 mg caffeine (e8c80, n = 10), or 10 mg ephedrine/100 mg caffeine (e10c100, n = 7), per kg metabolic body weight on body composition of feedlot mehraban ram lambs (8-month-old) was studied. the lambs were fed for 95 da...

In summary, this study characterized the biphasic inhibition of fat cell glucose transport by the lipolytic agents caffeine and theophylline. Like the lipolytic drug forskolin, both methylxanthines produced an immediate inhibition of glucose transport that was not seen with 8-phenyltheophylline, a pure adenosine receptor antagonist. The immediate inhibition was therefore not mediated by the ade...

background: caffeine increases the camp production that stimulates spermatozoa movement. caffeine is also used for induction of in vitro acrosome reaction in mammalian spermatozoa, an important step in achieving fertilization. objective: the aim of this study was to assess the effect of caffeine on sperm's motility, vitality and laboratory fertilization rates in mouse in two t6 and m16 media. m...

background: in recent years concerns have been raised about human reproductive disorders, specially the effects of environmental factors on human fertility and pregnancy outcome. therefore, the present study was designed to assess the effects of maternal caffeine consumption on ovarian follicles development in rat offspring. methods: 60 pregnant female rats were randomly divided into a control ...

We have investigated sources of Ca2+ contributing to excitation of human esophageal smooth muscle, using fura 2 to study cytosolic free Ca2+ concentration ([Ca2+]i) in dispersed cells and contraction of intact muscles. Acetylcholine (ACh) caused an initial peak rise of [Ca2+]ifollowed by a plateau accompanied by reversible contraction. Removal of extracellular Ca2+ or addition of dihydropyridin...

Effects of removal of the external sodium on the contractility of the frog's skeletal muscle were studied. Sodium-free solution, replaced by choline, strongly augmented the twitch tension before it abolished the action potential. A similar marked potentiation was also observed in the sustained contracture induced by a small depolarization under the current-clamped condition where generation of ...

Amplification of mRNA from a human antral cell culture preparation demonstrated the presence of two receptors of the bombesin and gastrin-releasing peptide family, GRPR-1 and BRS-3. Single cell microfluorometry demonstrated that most cells that exhibited bombesin-evoked changes in intracellular Ca2+ concentration were gastrin immunoreactive, indicating that antral G cells express the GRPR subty...

background: in recent years, concerns have been raised about human reproductive disorders. caffeine consumption is increasing by the world’s population and there is a relationship between caffeine intake and adverse reproductive outcomes. the aim of this study was to evaluate the effects of caffeine on implantation sites, number of live births, birth weight, crown-rump length (crl) and abnormal...

This work aims to transform coffee silverskin (CSS), the only waste from roasting process, that worldwide amounts about 76 million kg/year, into value-added products within an integrated slow pyrolysis process. The study, performed at 280 °C, 400 °C and 500 determined potential applications of resulting fractions. Biochar has been studied as adsorbent organic pollutants in water, using methylen...