Mean serum testosterone concentration in the 27-day-old prepubertal Holtzman rat was 0\m=.\25ng/ml, much lower than that observed in the adult male, 5\m=.\5ng/ml. Within 15 min after the intravenous injection of rat LH (in a dose of 400 ng-equiv. NIH-LH-S1/100 g body weight) serum testosterone concentration in the prepubertal rat increased approximately fivefold. Maximal elevation of serum test...

In the practice of neurosurgical operations the convulsions occasionally elicited during cortical manipulations or produced by electrical stimulations may sometimes be difficult to control, and may give rise in some cases to dangerous convulsive states that may even end fatally. Barbiturates and other common drugs may fail to stop such convulsions quickly, as we have observed in some of our cas...

BACKGROUND Oxytocin may cause adverse cardiovascular effects, including tachycardia and hypotension, whereas the optimal dose of oxytocin at elective cesarean section is unclear. To determine the lowest effective dose of oxytocin, we studied the hemodynamic effects of three doses during spinal anesthesia for elective single cesarean delivery. METHODS Sixty women received oxytocin by continuou...

Introduction. Education in Tabriz medical science university for medical students did not have a fixed and defendable route. Students learned most of the lessons theoretically which needed to be practiced and they were graduated from the university without having enough and correct information about them. It is noticeable that almost all of the practical procedures such as, intravenous injectio...

Drug Free Tumor Theranostics In article number 2205165, Tymish Y. Ohulchanskyy and co-authors introduce hemoglobin nanocrystals for drug free, synergistic selective theranostics of colon cancer. After intravenous (i.v.) injection, these target tumor react with tumor-specific H2S H2O to enable magnetic resonance imaging guided photothermal therapy produce •OH chemodynamic therapy.

Characteristic changes are produced in the lymph nodes of rabbits following the intravenous injection of certain bacterial filtrates administered 24 hours after either an intralymphatic or an intradermal injection of the same filtrate. These changes are limited to the nodes served by the lymphatic injected or to those furnishing the lymphatic drainage for the injected skin site. By either metho...

Since Hahn demonstrated the clearing of alimentary lipemia by the intravenous injection of heparin, many excellent studies have been done on lipoprotein lipase (LPL). In these studies, however, LPL activities were compared in normal and pathological conditions at a certain time after heparin injection. If the level of LPL activity in the circulating blood changes continuously after heparin inje...

Caudal epidural injection is a common intervention in patients with low back pain and sciatica. Even though the complications of fluoroscopically directed epidural injections are less frequent than in blind epidural injections, complications due to contrast media can occur. We report a case of anaphylactic shock immediately after injection of an intravenous nonionic contrast medium (iohexol) du...

Sympathetic activity is enhanced in heart failure and hypertensive rats. The aims of the current study were: i) To investigate the association between renal sympathetic nerve activity (RSNA) and mean arterial pressure (MAP) in response to intravenous injection of the ganglionic blocker hexamethonium; and ii) to determine whether normal Wistar rats and spontaneously hypertensive rats (SHRs) diff...