Biomaterial Database

Production and properties of antiserum for radioimmunoassay of serum conjugated chenodeoxycholic acid and its preliminary application. 1985

E C Orbán, and J P Pallos, and L T Kocsár

Sensitive tritiated radioimmunoassay was developed for conjugated chenodeoxycholic acid, using immunogen prepared by the mixed anhydride method. The obtained molar bile salt-BSA ratio in the immunogen was 19:1. The distinguishing features of the immunization procedure were a preliminary vaccination of the animal with antitubercular vaccine (VDS), and the administration of very small doses of immunogen (50 micrograms). Assay sensitivity for this bile salt fell in the picomole range with the standard curve extending from 1.5 to 150 pmol. Specificity of the antiserum was compared with that of the commercially available "Glycochenodeoxycholic acid RIA kit" (Nordiclab Oy, Oulu, Finland), and proved to be satisfactory. Fasting serum conjugated chenodeoxycholic acid concentration in 25 healthy subjects and 15 patients with cirrhosis was 0.63 mumol/l and 43.05 mumol/l, respectively. The assay was performed on unextracted sera.

UI	MeSH Term	Description	Entries
D007106	Immune Sera	Serum that contains antibodies. It is obtained from an animal that has been immunized either by ANTIGEN injection or infection with microorganisms containing the antigen.	Antisera,Immune Serums,Sera, Immune,Serums, Immune
D008105	Liver Cirrhosis, Biliary	FIBROSIS of the hepatic parenchyma due to obstruction of BILE flow (CHOLESTASIS) in the intrahepatic or extrahepatic bile ducts (BILE DUCTS, INTRAHEPATIC; BILE DUCTS, EXTRAHEPATIC). Primary biliary cholangitis involves the destruction of small intra-hepatic bile ducts and decreased bile secretion. Secondary biliary cholangitis is produced by prolonged obstruction of large intrahepatic or extrahepatic bile ducts from a variety of causes.	Biliary Cirrhosis,Biliary Cirrhosis, Primary,Biliary Cirrhosis, Secondary,Cholangitis, Chronic Nonsuppurative Destructive,Liver Cirrhosis, Obstructive,Primary Biliary Cholangitis,Biliary Cirrhosis, Primary, 1,Primary Biliary Cirrhosis,Secondary Biliary Cholangitis,Secondary Biliary Cirrhosis,Biliary Cholangitides, Primary,Biliary Cholangitis, Primary,Biliary Cholangitis, Secondary,Cholangitides, Primary Biliary,Cholangitis, Primary Biliary,Cholangitis, Secondary Biliary,Cirrhosis, Biliary,Cirrhosis, Secondary Biliary,Liver Cirrhoses, Biliary,Obstructive Liver Cirrhosis,Primary Biliary Cholangitides,Secondary Biliary Cholangitides
D011863	Radioimmunoassay	Classic quantitative assay for detection of antigen-antibody reactions using a radioactively labeled substance (radioligand) either directly or indirectly to measure the binding of the unlabeled substance to a specific antibody or other receptor system. Non-immunogenic substances (e.g., haptens) can be measured if coupled to larger carrier proteins (e.g., bovine gamma-globulin or human serum albumin) capable of inducing antibody formation.	Radioimmunoassays
D002635	Chenodeoxycholic Acid	A bile acid, usually conjugated with either glycine or taurine. It acts as a detergent to solubilize fats for intestinal absorption and is reabsorbed by the small intestine. It is used as cholagogue, a choleretic laxative, and to prevent or dissolve gallstones.	Chenic Acid,Chenodeoxycholate,Chenodiol,Gallodesoxycholic Acid,Chenique Acid,Chenix,Chenofalk,Chenophalk,Henohol,Quenobilan,Quenocol,Sodium Chenodeoxycholate,Acid, Chenic,Acid, Chenique,Acid, Chenodeoxycholic,Acid, Gallodesoxycholic,Chenodeoxycholate, Sodium
D005999	Glycochenodeoxycholic Acid	A bile salt formed in the liver from chenodeoxycholate and glycine, usually as the sodium salt. It acts as a detergent to solubilize fats for absorption and is itself absorbed. It is a cholagogue and choleretic.	Chenodeoxycholylglycine,Glycine Chenodeoxycholate,Glycochenodeoxycholate,Acid, Glycochenodeoxycholic,Chenodeoxycholate, Glycine
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man