We stated that SART-stressed guinea pigs showing nasal mucosal hypersensitivity would serve as an animal model for the in vivo evaluation of antiallergic drugs. In the present study, the mode of action of Neurotropin on nasal allergy compared with those of antiallergic drugs was studied by using SART-stressed guinea pigs. Daily administrations of Neurotropin improved the methacholine-induced hy...

Sixty-four patients with confirmed bronchial asthma were treated with HC 20-511 (Ketotifen). HC20-511 was evaluated to be very effective in 6.3%, effective in 50.0% and slightly effective in 10.9% of these patients. The appearance of reactive basophils was inhibited by HC 20-511 in 5 out of 6 cases of reaction to house dust, in all three cases with buckwheat allergy to their allergen and in 7 o...

Hemorrhagic shock (HS) is associated with cardiac contractile dysfunction. Mast cell (MC) degranulation is hypothesized to mediate the cardiodepressant effect. Cardiac function was assessed after HS and resuscitation (HS/R) with the administration of the MC stabilizers to prevent MC degranulation. Anesthetized male Sprague-Dawley rats were randomized to sham-operated control or HS/R groups and ...

Conventional ophthalmic solutions often eliminate rapidly after administration and cannot provide and maintain an adequate concentration of the drug in the precorneal area. To solve these problems, we developed a pH in situ gelling and mucoadhesive ophthalmic drug delivery system containing ketotifen fumarate based on gellan gum. The pasture of ocular drug delivery is one of the fascinating and...

In this study, we examined whether compound 48/80 (C48/80), a mast cell degranulator, causes hepatic oxidative damage in rats. Serum and liver biochemical parameters were determined 0.5, 3 or 6 h after a single treatment with C48/80 (0.75 mg/kg). Serum histamine and serotonin levels increased 0.5 h after C48/80 treatment but diminished thereafter. Increases in serum vitamin C (VC) and transamin...

This study investigated antipruritic and anti-inflammatory effect of Centella asiatica extract in rats and anti-allergic in vitro using sheep (Capra hircus) serum method and compound 48/80 induced mast cell degranulation method, compared with standard drug ketotifen fumarate. In rats, extract of Centella asiatica administered orally was examined for anti-pruritic study and chlorpheniramine male...