Abstract：
:Intestinal mucin and goblet cells were examined in streptozotocin-diabetic rats and age-matched controls. Mucin (tissue content and secretion) was measured using a highly specific enzyme-linked immunoassay. In contrast to the increased protein to deoxyribonucleic acid ratio, an absolute decrease was observed in the mucin to deoxyribonucleic acid ratio in mucosal homogenates of the diabetic intestine. This was not due to a loss of goblet cells as their numbers per crypt-villus unit increased in diabetic rats (in proportion to the rise in enterocyte numbers and crypt-villus length). Histochemically, goblet cell mucin was unchanged in diabetes. After a 90-min incubation of everted intestinal segments in Krebs' buffer, pH 7.4, at 37 degrees C, the amount of mucin released into the medium was the same in diabetic and control rats when expressed relative to tissue deoxyribonucleic acid. However, secreted mucin represented a significantly larger proportion of the total tissue mucin content in diabetic animals. Thus, to maintain mucin output at normal levels, the rate of mucin secretion is apparently increased in the diabetic intestine, despite (or perhaps causing) a large decrease in the tissue mucin content.
journal_name
Gastroenterologyjournal_title
Gastroenterologyauthors
Mantle M,Thakore E,Atkins E,Mathison R,Davison JSdoi
10.1016/0016-5085(89)91417-0subject
Has Abstractpub_date
1989-07-01 00:00:00pages
68-75issue
1eissn
0016-5085issn
1528-0012pii
0016-5085(89)91417-0journal_volume
97pub_type
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