Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.1.3.1 (alkaline phosphatase)
 47,916 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The effect of mercury on alkaline phosphatase, lipase, aminotripeptidase and glycylglycine dipeptidase in the liver and digestive tract of Channa punctatus is investigated in vitro. Mercury inhibits the activities of all these enzymes and the degree of inhibition increases with the increase in the concentration of the metal. Addition of EDTA, a chelating agent, restored the mercury inhibited enzyme activity and the degree of restoration was related to the concentration of the chelating agent.
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PMID:In vitro inhibition of digestive enzymes by heavy metals and their reversal by chelating agent: Part I. Mercuric chloride intoxication. 10 87

The effect of lead on alkaline phosphatase, lipase, aminotripeptidase and glycylglycine dipeptidase in the liver and digestive tract of Channa punctatus is investigated in vitro. Mercury inhibits the activities of all these enzymes and the degree of inhibition increased with the increase in the concentration of the metal. Addition of EDTA, a chelating agent, restored the mercury inhibited enzyme activity and the degree of restoration was related to the concentration of the chelating agent.
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PMID:In vitro inhibition of digestive enzymes by heavy metals and their reversal by chelating agent: Part II. Lead nitrate intoxication. 10 88

The effect of 1.8 mg/liter (LC50) of mercuric chloride exposure on the activities of alkaline phosphatase, acid phosphatase, glucose-6-phosphatase, amylase, pepsin, trypsin, tripeptidase glycyl-glycine dipeptidase and carnosinase has been examined in Channa punctatus. The three phosphatases have been inhibited in the liver but showed an increase in activity in the intestine and pyloric caeca. Amylase, pepsin and trypsin have also shown a slight increase in activity. There has been no significant alteration in the activites of the peptidases. The results show that mercury inhibits the activites of phosphatases in the liver but has no significant effect on the digestive enzymes within the experimental period of 96 hours.
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PMID:Effect of mercuric chloride on the digestive system of a teleost fish, Channa punctatus. 21 48

Alterations in the activities of alkaline phosphatase, acid phosphatase, glucose-6-phosphatase amylase, trypsin, pepsin, aminotripeptidase, glycylglycine dipeptidase and carnosinase due to exposure of Channa punctatus to a sublethal concentration (0.30 mg/L) of mercuric chloride by bath for 20 days have been studied in the different parts of the digestive system. Afall in the activities of the three phosphatases was recorded except for alkaline phosphatase which showed a slight elevation in activity in intestine and pyloric caeca. An increase in the activity of amylase and the two proteases was observed in all the portions of the digestive system. The three peptidases revealed a decrease in activity.
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PMID:The in vivo effect of mercuric chloride on some digestive enzymes of a fresh water teleost fish, Channa punctatus. 22 1

The effect of lead nitrate on the digestive system of a teleost fish, Channa punctatus has been studied after 125 days of exposure to a sublethal concentration (6.8 mg/liter). The results show that considerable degenerative changes are produced in the histological structure of liver, intestine, and pyloric caeca. In the liver, the damage is in the form of liver cord disarray, necrosis, inflammation of portal areas, hardening of connective tissue, shrinkage of nuclei, and septa formation around blood vessels. No fatty infiltration or glycogen depletion has been observed. Lipofuscin granules accumulated in the cytoplasm of hepatocytes. In the intestine and pyloric caeca flattening of villi at a number of places, inflammation, and necrosis are the most conspicuous changes. The activities of alkaline phosphatase and aminotripeptidase are inhibited in the liver. In stomach, alkaline phosphatase is inhibited but an elevation in amylase activity was noted. Acid phosphatase showed an increase in the intestine and pyloric caeca while aminotripeptidase and glycylglycine dipeptidase were inhibited.
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PMID:Histopathological and enzymological studies on the effects of chronic lead nitrate intoxication in the digestive system of a freshwater teleost, Channa punctatus. 40 Sep 74

Extracellular matrix vesicles from bovine fetal alveolar bone and from a dog osteosarcoma were isolated by differential centrifugation and then fractionated on a discontinuous sucrose density gradient. The fractions were examined by electron microscopy and were analyzed for protein, alkaline phosphatase, aminotripeptidase, and four different beta-naphthylamidase activities. The low-density peak of enzyme activities was shown by electron microscopy to be much more homogeneous than the crude matrix vesicle fraction. Two major peaks of protein and enzyme activities were present, one in the high and one in the low density layers. There was good correlation between the activities of alkaline phosphatase and the various peptidases in the fractions from the sucrose density gradient. These results indicate a coexistence of peptidase and alkaline phosphatase in matrix vesicles. On the other hand, there was generally no correlation between the peptidase and alkaline phosphatase activities in vesicular specimens from bovine liver obtained in the same way. Most of the peptidase activity and about half of the alkaline phosphatase activity were solubilized from bone matrix vesicles by detergents. The extracted alkaline phosphatase and alanyl beta-naphthylamidase activities were separated from each other on a DEAE-cellulose column.
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PMID:Neutral peptidase activities in matrix vesicles from bovine fetal alveolar bone and dog osteosarcoma. 665 55