Antigenicity of chlorpromazine and clozapine to rabbits

Antigenicity of clozapine was studied in rabbits, comparing with that of chlorpromazine as control. The results indicate that chlorpromazine produces antibody in rabbit as revealed by passive hemagglutination test, giving the titer of 1 : 2, 000 or higher in all the five cases observed, though specific precipitin lines has not been obtained and PCA test proves to be negative. Clozapine failed to produce anti.clozapine antibody giving negative passive hemagglutination test, passive cutaneous anaphylaxis and precipitin reaction, in all forms tested. Some remarks were made on the possible close relation between the antigenicity of the drug and its affinity to protein.</p

One Point Method for the Assay of the Alternative Complement Pathway Hemolysis in Rats

One point method to assay the functional activity of alternative complement pathway (AP50) was performed using rats sera. As the titration of CH50 or AP50 to see the activity of complement system with ordinary method needs at least 0.1 ml of serum, experiments with small animals find difficulties to assay CH50 and AP50 at the same time. The method in this report is a modification of one point method for CH50, and instrumental in the case of experiments with small animals

Influence of Ethanol Pretreatment on Serum Complement Levels in Rats Treated with Carbon Tetrachloride

Pretreating male Wistar rats with a single oral dose (6ml/kg) of ethanol clearly potentiated the CCl4-induced hepatotoxicity (0.2 ml/kg ip), as shown by the elevated SGOT and SGPT levels, or histopathological observation of the liver sections. Serum hemolytic complement (CH50) and C3 levels were slightly reduced by the administration of CC14, but significantly reduced when rats were treated with ethanol 18 hours prior to CC14 administration

In Vivo Effects of Cadmium Acetate on Rat Complement

Male Wistar rats were injected intraperitoneally or intravenously with various doses of cadmium acetate (i.p.: 1 mg, 2 mg or 4 mg Cd/kg body weight, i.v.: 1 mg, 2 mg or 3 mg Cd/kg body weight). Twenty-four hours following the injection, functional activities of the classical (CH50) and alternative complement pathways (APCH50), and the complement component C3 concentrations in the sera were significantly reduced in the Cd-treated rats. Histopathological examinations of the livers and kidneys, as well as laboratory tests for serum transaminases (SGOT, SGPT) and serum urea nitrogen (SUN), revealed that cadmium acetate induced moderate to severe hepatic injury depending on the dose administered, whereas kidney lesions were less evident

Review of Regulation for the Fas-mediated Apoptotic Pathway in Silicosis Patients

The past several years, we have been investigating immunological aspects of silicosis focusing on Fas-mediated apoptosis. We found elevated serum level of soluble Fas (sFas) molecule, higher gene expression of sFas and decoy receptor 3 (DcR3) genes in peripheral blood mononuclear cells (PBMC) than healthy volunteers, and various alternatively spliced Fas transcripts in PBMC. The factor analysis using these results indicated that there were a small number of patients who developed immunological diseases without presenting with respiratory disorders. In addition, we discuss the mechanism involved in the development of autoimmune disorders found in silicosis patients