Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.2.1.20 (alpha-glucosidase)
 4,237 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Urinary excretion of alpha-glucosidase (AGL), gamma-glutamyltransferase (GGT) and ribonuclease (RNase), and serum amylase and immunoreactive trypsin (IRT) were determined in 38 control subjects, 48 patients with pancreatic cancer, 77 with chronic pancreatitis and 47 with extrapancreatic diseases in order to ascertain the presence of a renal tubular damage and to investigate its etiology. A significantly increased frequency of pathological results for all urinary enzymes was documented in the various groups of patients as compared to controls. Significant correlations were detected among AGL, GGT and RNase. Considering the subjects as a whole, GGT and RNase excretions correlated with serum IRT and amylase; the two urinary enzymes were found to be higher when jaundice was present. In chronic pancreatic disease enzymuria was related to increased serum pancreatic enzymes; in extrapancreatic diseases it was associated to hyperbilirubinemia. The vast majority of patients with pancreatic cancer and elevated urinary enzymes presented hepatic metastases and/or jaundice. We can conclude that an anatomical and functional tubular impairment is detectable in some patients with chronic pancreatic and extrapancreatic diseases. Tubular damage seems to least in part to be related to pancreatic inflammation and necrosis in chronic pancreatic disease, while jaundice may be found to play an important role in diseases of the hepatobiliary tract. In pancreatic cancer, liver dysfunction (presence of liver metastases and/or extrahepatic cholestasis) also appears to be involved in altering tubular cells.
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PMID:Renal tubular dysfunction in pancreatic cancer and chronic pancreatitis. 256 74

The activities of lysosomal maltase in the serum, bile and liver were determined in intrahepatic cholestasis rats induced by alpha-naphtylisothiocyanate (ANIT, 200 mg/kg, i.p.), and compared with changes in alkaline phosphatase (ALP) activity. Moreover, the influences of endogenous bile acids on the release of maltase activity from the liver in intrahepatic cholestasis rats were studied. The maltase activities in the serum and bile significantly increased from 4 and 8 h after the intraperitoneal administration of ANIT, respectively. Conversely, a significant decrease in liver maltase activity was observed from 4 h after the injection of ANIT. On the other hand, total bile acid concentrations in the serum and bile significantly increased immediately after the treatment of ANIT, when biliary bile acid, exogenous bile acid or Triton X-100 was added to lysosomal fraction in the liver, the maltase activity in the supernate after the reaction significantly increased in proportion to the concentration of each substance added to the liver lysosome. These results suggested that maltase might be released from liver lysosomal membrane by surface active-action of bile acid accumulated in the liver after the administration of ANIT. Moreover, the changes in ALP activities in the serum, bile and liver after the administration of ANIT were almost similar to those in maltase activity.
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PMID:[The influences of endogenous bile acids on maltase and alkaline phosphatase activities in intrahepatic cholestasis rats]. 269 43