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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3-4
pubmed:dateCreated
2006-9-5
pubmed:abstractText
Guanase is known as an enzyme released from the liver. Recently, cloning and sequencing of the guanase gene were reported. In addition, almost simultaneously, it was reported that an unknown protein that binds to neuronal and endocrine lethal(1)-discs large (NE-dlg), one of the membrane-associated guanylate kinase homologues (MAGUK) family proteins involved in synaptic connection between neurons, was cloned and named nedasin (NE-dlg associated protein), whose sequence was almost identical to that of guanase. We immunostained fresh frozen sections of surgically removed human liver, kidney, and small intestine with anti-nedasin antibody, and simultaneously performed histochemical staining for guanase for comparison. Histochemically, guanase activity was observed in the cytoplasm of hepatocytes and biliary epithelium on the liver, in the mucosal epithelium on the small intestine, and in the proximal tubule on the kidney. Immunohistochemically, a brown discoloration due to DAB oxidation was seen in the cytoplasm of hepatocytes and biliary epithelium on the liver, in the proximal tubule but in the distal tubule a little on the kidney, in the mucosal epithelium on the small intestine. The stained region of the liver and the small intestine were different from that of the kidney. The different staining properties dependent on the organs were considered to be due to different isozymes. The physiological significance of guanase may vary with the isozymes, further studies are considered necessary.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1343-1420
pubmed:author
pubmed:issnType
Print
pubmed:volume
53
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
264-70
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Histochemical and immunohistochemical investigation of guanase and nedasin in human tissues.
pubmed:affiliation
Department of Digestive and Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School.
pubmed:publicationType
Journal Article, Comparative Study