Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:3.2.1.26 (
invertase
)
4,927
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Alkaline phosphatase,
sucrase
, Na+,K+-ATPase and Mg2+-ATPase specific activities of crude membrane fractions, prepared from duodenal, jejunal, ileal and colonic mucosa, have been estimated in three types of hypertensive rats: the spontaneously hypertensive rat (SHR), the
DOCA
-saline treated rat and the renovascular rat (Goldblatt one-kidney, one-clip rat; 1K-1C). Alkaline phosphatase and
sucrase
specific activities have been measured in purified jejunal brush-border membranes. When compared with its normotensive age-matched control (WKY rat), the SHR has a lower activity of alkaline phosphatase in duodenal and jejunal crude membrane fractions, whereas a higher activity in colonic Na+,K+-ATPase is recorded. In purified jejunal brush-border membranes, lower alkaline phosphatase activity and higher
sucrase
activity were found. These differences occur in the young prehypertensive SHR as well as in the adult animal. In the
DOCA
-treated rat, the only significant alteration in crude membrane fractions is a decreased Mg2+-ATPase activity at all regions of intestinal mucosa. In purified jejunal brush-border membranes both alkaline phosphatase and
sucrase
activities are increased at 4 or 7 weeks but especially at 13 weeks of hypertension. In the 1K-1C rat, no significant modification appears in crude membrane fractions or in purified jejunal brush-border membranes, but a decrease in alkaline phosphatase and in
sucrase
activities is probable after 13 weeks of hypertension. Since alterations of the intestinal enzymes are different in the three types of hypertensive rats it is concluded that the changes are not secondary to the hypertension condition. In the SHR, these alterations are present in the young prehypertensive animal.(ABSTRACT TRUNCATED AT 250 WORDS)
...
PMID:Alterations of intestinal membrane-bound enzymes in three types of hypertensive rats. 301 51
