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Expression of NG,NG...
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Onozato, Maristela LUniversity of Tokyo, Japan and Georgetown University, USA
(författare)
Expression of NG,NG-dimethylarginine dimethylaminohydrolase and protein arginine N-methyltransferase isoforms in diabetic rat kidney: effects of angiotensin II receptor blockers
- Artikel/kapitelEngelska2008
Förlag, utgivningsår, omfång ...
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American Diabetes Association,2008
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:uu-11924
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-11924URI
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https://doi.org/10.2337/db06-1772DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-99787URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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Objective: The nitric oxide (NO) synthase inhibitor, asymmetric dimethylarginine (ADMA) is generated by protein arginine N-methyltransferase (PRMT)-1 and is metabolized by NG, NG-dimethylarginine dimethylaminohydrolase (DDAH). We tested the hypothesis that increased serum ADMA (SADMA) in the streptozotocin (STZ)-induced rat model of diabetes mellitus (DM) is mediated by an angiotensin receptor blocker– sensitive change in DDAH or PRMT expression.Research design and Methods: Data were compared from 4 groups of rats: sham injected controls; untreated STZ- DM at 4 weeks; STZ-DM rats administered the angiotensin II receptor blocker telmisartan for 2 weeks; control rats administered telmisartan for 2 weeks.Results: Immunostaining and Western blotting of microdissected nephron segments localized DDAH I in the proximal tubules and DDAH II in the glomeruli, afferent arterioles, macula densa and distal nephron. Renal angiotensin II and SADMA increased with DM but were normalized by 2 weeks of telmisartan. DDAH I expression was decreased in DM kidneys while DDAH II expression was increased. These changes were reversed by telmisartan which also reduced expression of PRMT-1 and -5. Telmisartan increased expressions of DDAH I but decreased DDAH II in Ang II-stimulated kidney slices ex-vivo.Conclusion: Renal angiotensin II and SADMA are increased in insulinopenic DM. They are normalized by an angiotensin II receptor blocker which increases the renal expression of DDAH I, decreases PRMT-1 and increases renal NO metabolites.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Tojo, AkihiroUniversity of Tokyo, Japan
(författare)
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Leiper, JamesUniversity College London, UK
(författare)
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Fujita, ToshiroUniversity of Tokyo, Japan
(författare)
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Palm, FredrikUppsala universitet,Institutionen för medicinsk cellbiologi,Division of Nephrology and Hypertension, Cardiovascular Kidney Hypertension Institutet, Georgetown University, USA(Swepub:liu)frepa35
(författare)
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Wilcox, Christopher SGeorgetown University, USA
(författare)
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University of Tokyo, Japan and Georgetown University, USAUniversity of Tokyo, Japan
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Diabetes: American Diabetes Association57:1, s. 172-1800012-17971939-327X
Internetlänk
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Diabetes
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