Laryngeal Reflex Closure in Several Species of Experimental Animals

Capsaicin-induced activation of pulmonary vagal C fibers produces reflex laryngeal closure in the rat.

Our recent studies show that intravenous administration of capsaicin induces enhancement of the intralaryngeal thyroarytenoid (TA) branch but a reduction of the intralaryngeal abducent branch, suggesting that the glottis is likely closed by capsaicin. The aim of the present study was to examine whether the glottis is adducted by intravenous administration of capsaicin. Electromyographic (EMG) a...

Scorpion Venom Pisoning in Experimental Animals

The beta-adrenergic responses in isolated splenic capsule area of several species of animals.

In isolated splenic capsules of mouse, rat, guinea pig, rabbit, cat and dog, either a single or a cumulative dose of l- and dl-isoproterenol at a concentration higher than l0(-9) M, induced a relaxation which was inhibited or blocked with pretreatment of 10(-5) M propranolol. At a concentration of 5 x 10(-6) M to 10(-5) M 1- and dl-isoproterenol, an inverse contraction was induced, and such res...

Asbestosis in experimental animals.

Previous animal experiments with asbestos dusts have been almost entirely confined to chrysotile asbestos. It was, therefore, decided to investigate the effects of mill dusts from the three types of asbestos that are produced commercially in South Africa, namely chrysotile, amosite, and crocidolite. Chrysotile and amosite samples were relatively pure while in contrast the crocidolite dust was f...

Prevalence of Arcobacter species isolated from human and various animals in east of Turkey

This study was conducted to determine presence and distribution of Arcobacter spp. by conventional culture and a multiplex PCR (m-PCR) in the intestinal content samples that are collected from the cattle, sheep and goats and in the faecal samples of people who reffered to the hospitals in the east of Turkey, because of complains about gastroenteritis and diarrhea. In the examination of the tota...