SUMMARY Adult male Sprague-Dawley rats briefly immersed-n cold water and forced to swim showed Straub tail elevation, a typical s~gn of opiate stimu-iation, upon removal. The presence of Straub tail was a function of degree of immersion and was reversed by naloxone. Th~s suggests the Straub taft response may be a novel behavioral index of stress-indu~ed endorphin release. Stressful manipulation...

Background: Diabetes mellitus in some clinical cases is accompanied with hyperalgesia. In this study, we evaluated the possible beneficial effect of chronic pelargonidin (PG) treatment on hyperalgesia in streptozotocin (STZ)-diabetic neuropathic rat. Methods: Male Wistar rats (n = 56) were divided into seven groups, i.e. control, diabetic, PG-treated control, PG (single- and multiple-dose)-trea...

objective: this study was designed to investigate the antinociceptive effect of curcumin in diabetic rats by using the formalin and hot tail immersion tests. methods: wistar rats were divided into the following six groups:  control; curcumin-treated control (50 mg/kg); diabetic; sodium salicylate (ss)-treated diabetic; and two curcumin-treated diabetic groups (10 and 50 mg/kg). curcumin was ad...

The diving response was produced by submerging the head of the unanesthetized rat for 60 s, while it was confined in a mesh-wired cone. Heart rate and cardiac output decreased by 73% and 74% from the predive values, respectively, indicating insignificant change in stroke volume. Central systemic arterial blood pressure rose by 22% during diving and a fourfold increase in total peripheral resist...

background: diabetes mellitus in some clinical cases is accompanied with hyperalgesia. in this study, we evaluated the possible beneficial effect of chronic pelargonidin (pg) treatment on hyperalgesia in streptozotocin (stz)-diabetic neuropathic rat. methods: male wistar rats (n = 56) were divided into seven groups, i.e. control, diabetic, pg-treated control, pg (single- and multiple-dose)-trea...

Background: Matricaria chamomilla (chamomile) is a herb used to treat various human illnesses. The present study was conducted to investigate the effects of chamomile extract on spermatozoon quality, serum levels of estradiol and testosterone, and sperm tail length in male adult rat.  Methods: Male Sprague-Dawley rats received extract of chamomile (400 mg/kg once daily, orally) during an 8-week...

Objective: Vitex agnus-castus (VAC) and its essential oil have been traditionally used to treat many conditions and symptoms such as premenstrual problems, mastalgia, inflammation, sexual dysfunction, and pain. In this study, the effects of essential oil extracted from Vitex agnus-castus (EOVAC) leaves were investigated in three behavioral models of nociception in adult male Wistar rats. Materi...