نتایج جستجو برای: cannabis sativa
تعداد نتایج: 29610 فیلتر نتایج به سال:
Two ceramic smoking-pipe bowls, excavated in Lalibela Cave, Begemeder Province, Ethiopia, were radiocarbon dated to 1320 ±2 80 A.D. A modified thin-layer chromatographic technique, applied to the pipe residues, yields positive tests for cannabis-derived compounds. Long-lived cannabinoids, produced by the heat of smoking from short-lived psychoactive ingredients in cannabis, makes identification...
The herb Cannabis sativa (C. sativa) has been used in China and on the Indian subcontinent for thousands of years as a medicine. However, since it was brought to the UK and then the rest of the western world in the late 19th century, its use has been a source of controversy. Indeed, its psychotropic side effects are well reported but only relatively recently has scientific endeavour begun to fi...
The cannabinoids are members of a deceptively simple class of terpenophenolic secondary metabolites isolated from Cannabis sativa highlighted by (-)-Δ(9)-tetrahydrocannabinol (THC), eliciting distinct pharmacological effects mediated largely by cannabinoid receptor (CB1 or CB2) signaling. Since the initial discovery of THC and related cannabinoids, synthetic and semisynthetic classical cannabin...
شاهدانه ایرانی (cannabis sativa l.) گیاهی دارویی متعلق به خانواده cannabinaceae است که ترکیب های متنوعی از متابولیت های ثانویه را تولید می کند. این تحقیق به منظور بهینه سازی باززایی مستقیم و غیرمستقیم این گیاه در شرایط in vitro انجام شد. ریزنمونه های برگ و هیپوکوتیل از گیاهچه های استریل جداسازی شده و محیط کشت های حاوی ba (1/0، 2/0، 5/0، 1، 2، 3 میلی گرم در لیتر) به تنهایی یا در ترکیب با 5/0 میل...
Pregnenolone is considered the inactive precursor of all steroid hormones, and its potential functional effects have been largely uninvestigated. The administration of the main active principle of Cannabis sativa (marijuana), Δ(9)-tetrahydrocannabinol (THC), substantially increases the synthesis of pregnenolone in the brain via activation of the type-1 cannabinoid (CB1) receptor. Pregnenolone t...
Over the last decades, the scientific interest in chemistry and pharmacology of cannabinoids has increased. Most attention has focused on ∆(9)-tetrahydrocannabinol (∆(9)-THC) as it is the psychoactive constituent of Cannabis sativa (C. sativa). However, in previous years, the focus of interest in the second plant constituent with non-psychotropic properties, cannabidiol (CBD) has been enhanced....
A new enzyme, geranylpyrophosphate:olivetolate geranyltransferase (GOT), the first enzyme in the biosynthesis of cannabinoids could be detected in extracts of young leaves of Cannabis sativa. The enzyme accepts geranylpyrophosphate (GPP) and to a lesser degree also nerylpyrophosphate (NPP) as a cosubstrate. It is, however, specific for olivetolic acid; its decarboxylation product olivetol is in...
Hemp (Cannabis sativa L.) is a species considered as having one of the most complicated mechanisms of sex determination. Peroxidase and esterase isoenzymes in leaves of the two sexual phenotypes of hemp were studied. Significant differences in isoperoxidase and isoesterase patterns were found between male and female plants, both in the number and stain intensity of bands. For both esterase and ...
این تحقیق به منظور بررسی امکان ریزازدیادی، تعیین بهترین محیط کشت و ترکیب تنظیم کننده های رشد گیاهی شاهدانه (cannabis sativa l.) در شرایط درون شیشه ای انجام شد. بذرها بعد از ضدعفونی سطحی روی محیط کشت پایه ms کشت شدند. پس از یک ماه ریزنمونه های برگ و هیپوکوتیل از گیاهچه های رشدیافته در محیط in vitro در محیط کشت ms حاوی تنظیم کننده رشد گیاهی naa (5/0، 1، 2 و 3 میلی گرم در لیتر) به تنهایی یا در ترک...
Cannabis (Cannabis sativa L.) is one of the oldest cultivated plants purported to have unique medicinal properties. However, scientific research cannabis has been restricted by Single Convention on Narcotic Drugs 1961, an international treaty that prohibits production and supply narcotic drugs except under license. Legislation governing cultivation for research, even recreational purposes relax...
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