Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.2.1.31 (beta-glucuronidase)
 7,680 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Serum 3 beta-hydroxy-5-cholenoic acid (3 beta-OH-delta 5) was analyzed in 100 cases (90 patients with hepatobiliary diseases, 10 normal subjects) and its clinical significance investigated. The measurement of 3 beta-OH-delta 5 was performed by high performance liquid chromatography (HPLC) with immobilized 3 beta-hydroxysteroid dehydrogenase (3 beta-HSD) as the enzyme column. Esterified 3 beta-OH-delta 5 was measured after enzymatic hydrolysis with sulfatase and beta-glucuronidase. 3 beta-OH-delta 5 was hardly detected in normal cases. On the other hand, serum 3 beta-OH-delta 5 levels were remarkably high in cholestatic cases and also high in other cases with high bilirubin levels. The ratio of glycine- to taurine-conjugates (G/T ratio) was effective in discriminating cholestasis from hepatocellular damage such as in cases of acute hepatitis or fulminant hepatitis. More than 90% of the 3 beta-OH-delta 5, which is toxic, was sulfated or glucuronidated, suggesting detoxification by esterified bile acids. Significant increases of taurine-conjugated 3 beta-OH-delta 5 were observed in cases with pruritus, and a relationship between taurine-conjugated and pruritus was presumed. Therefore, analysis of 3 beta-OH-delta 5 is considered to be effective in clarifying the pathogenesis of hepatobiliary diseases.
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PMID:Clinical evaluation of serum 3 beta-hydroxy-5-cholenoic acid in hepatobiliary diseases. 347 20

Activities of alkaline phosphatase (ALP), gamma-glutamyl transferase (GMT), lactate dehydrogenase (LD), beta-glucuronidase (GLU) and cathepsin B-like (CB-like) were determined in blind-coded sera from 50 patients with primary liver carcinoma, liver cirrhosis and acute hepatitis, and from 40 control subjects of comparable age range. CB-like activity averaged 700% (p less than 0.01), 1590% (p less than 0.01) and 1600% (p less than 0.01) of control subjects in liver cirrhosis (n = 30), acute hepatitis (n = 5) and primary liver carcinoma (n = 15), respectively. In acute hepatitis group we have found significant correlation between CB-like and GLU activities (r greater than 0.95). This correlation, however, was not observed in primary liver carcinoma suggesting that alteration in CB-like activity is not due to generalized increases in lysosomal membrane instability. The primary liver carcinoma group exhibited also the modest increments in serum ALP, GMT and LD activities (p less than 0.01). This increment, however, was not detected in any of acute hepatitis or liver cirrhosis patients. For the first time the alkaline-stable form of CB-like in human serum is described. This form representing 40% of overall CB-like activity was present in all primary liver carcinoma patients. This form, however, was not present in sera of any of control subjects or in sera of patients with acute hepatitis and liver cirrhosis with the exception of two men, in whom we have probably dealing with an early stage of primary liver carcinoma. Although the nature of the increment in CB-like activity in cancer remains to be determined, such analyses may help to the early detection of malignant hepatoma (primary liver carcinoma).
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PMID:Serum alkaline-stable acid thiol proteinase--a possible marker for primary liver carcinoma. 614 23

Urinary sulfated primary bile acids, 7 alpha-hydroxy bile acids, are detected by an enzymatic method using 7 alpha-hydroxysteroid dehydrogenase (EC 1.1.1.-, 7 alpha-HSD) after chromatographic fractionation on Sephadex G-25. Urinary sulfated or glucuronated bile acids are hydrolyzed by beta-glucuronidase/sulfatase (EC 3.2.1.31/EC 3.1.6.1) from Helix pomatia and then released 7 alpha-hydroxy bile acids are detected with 7 alpha-HSD in the presence of beta-ND+, diaphorase (EC 1.6.99.2, from Clostridium kluyveri) and 2-p-iodophenyl-3-p-nitrophenyl-5-phenyltetrazolium chloride. The absorbance of formazan formed during the enzymic reaction is measured at 500 nm. Excretion values of 7 alpha-hydroxy bile acids in normal subjects and in patients with acute hepatitis were compared. This enzymatic detection method for the excretion pattern of urinary 7 alpha-hydroxy bile acids may be useful for clinical diagnosis.
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PMID:Simple enzymatic detection method for urinary sulfated 7 alpha-hydroxy bile acids in normal subjects and in patients with acute hepatitis. 657 34

Free-radical-mediated oxidant damage can contribute to acute hepatitis. Vitamin E, a classic antioxidant, has been tested as a therapy for rodent acute hepatitis, but the protection achieved has not been complete. This study demonstrated that in rats, sodium diethyldithiocarbamate (DDC), a potent antioxidant, strongly depressed galactosamine-induced hepatitis in terms of serum alanine amino transferase activities and bile acids, though not in terms of serum beta-glucuronidase activities. A potential limitation for DDC use in humans, inhibition of copper metalloenzyme activities, did occur at the DDC dose used here. However, these effects were not severe. Thus, DDC could make a useful short term therapeutic drug for acute hepatitis.
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PMID:Diethyldithiocarbamate inhibition of galactosamine-induced hepatitis in rats. 1188 24