Bradycardic ventricular electrical remodeling predisposes to lethal tachyarrhythmias. We investigated the early temporal sequence and reversibility of electrical remodeling in a rabbit complete heart block model subjected to bradycardic ventricular pacing for either 2 or 8 days, with a third group of animals undergoing 8 days of bradycardic pacing followed by 8 days of physiological-rate pacing...

objective(s):reduction of pharmacological effectiveness or tolerance appears following repeated administration of many analgesic drugs. we investigated tolerance to anti-nociceptive effects of orexin-a, an endogenous potent analgesic peptide using the hot-plate test.materials and methods:orexin-a was microinjected icv (intracerebroventricular) with an interval of 12 hr for 7 continuous days and...

Three experiments were conducted on Martina Franca jennies. Experiment 1 tested Wood's model for evaluating the lactation curve. Data from the entire lactation period of 12 jennies were used. The results showed that Wood's model was able to recognize the shape of the lactation curve from pooled data (r(2) = 0.11; P < 0.01), with the lactation peak occurring at 48 d. Individual curves showed wid...

OBJECTIVE Celebrity cancer diagnoses generate considerable media coverage of and increase interest in cancer screening, but do they also promote primary cancer prevention? METHODS Daily trends for smoking cessation-related media (information-availability) and Google queries (information-seeking) around Brazilian President and smoker Lula da Silva's laryngeal cancer diagnosis announcements wer...

abstract water deficit and consecutive droughts have lead to drought stress in most parts of the world recently. we need prepare a good program to use better available water. different material can be used to increase water use efficiency. super absorbent is one of the materials used around the world. these materials absorb water in the soil so that reserved water is usable by plant in the time...

the aim of the present study was stereological evaluation of testes of azoospermic animal model using busulfan in rat. three groups of male adult rats were used in this study. the first group was injected by single dose of busulfan (10 mg kg-1) and their testes were removed on day 35 post injection. the second group received double doses of busulfan with 21 days interval and their testes were r...

introduction: this study was carried out to compare the effect of different suture removal time on surgical wound healing. materials and methods: twenty-one male albino rabbits were used. under general and local anesthesia a moucoperiosteal rectangular flap was raised in each animal and then repositioned and sutured. the animals were randomly divided into three experimental groups of seven anim...