Article ; Online: L-NAME Administration Enhances Diabetic Kidney Disease Development in an STZ/NAD Rat Model.
International journal of molecular sciences
2021 Volume 22, Issue 23
Abstract: ... NAD) with oral N(ω)-Nitro-L-Arginine Methyl Ester (L-NAME) administration. Diabetes was induced ... of 230 mg/kg NAD. Rats were assigned to different groups receiving L-NAME (100 mg/kg/day) (STZ/NAD/L-NAME ... albumin-to-creatinine ratio, and evolving hypofiltration were detected at the end of the study. Daily L ...
Abstract | One of the most important risk factors for developing chronic kidney disease (CKD) is diabetes. To assess the safety and efficacy of potential drug candidates, reliable animal models that mimic human diseases are crucial. However, a suitable model of diabetic kidney disease (DKD) is currently not available. The aim of this study is to develop a rat model of DKD by combining streptozotocin and nicotinamide (STZ/NAD) with oral N(ω)-Nitro-L-Arginine Methyl Ester (L-NAME) administration. Diabetes was induced in male Wistar rats by intravenous injection of 65 mg/kg STZ, 15 min after intraperitoneal injection of 230 mg/kg NAD. Rats were assigned to different groups receiving L-NAME (100 mg/kg/day) (STZ/NAD/L-NAME) or vehicle (STZ/NAD) for a period of 9 or 12 weeks by daily oral gavage. All rats developed hyperglycemia. Hyperfiltration was observed at the start of the study, whereas increased serum creatinine, albumin-to-creatinine ratio, and evolving hypofiltration were detected at the end of the study. Daily L-NAME administration caused a rapid rise in blood pressure. Histopathological evaluation revealed heterogeneous renal injury patterns, which were most severe in the STZ/NAD/L-NAME rats. L-NAME-induced NO-deficiency in STZ/NAD-induced diabetic rats leads to multiple characteristic features of human DKD and may represent a novel rat model of DKD. |
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MeSH term(s) | Animals ; Blood Glucose/analysis ; Blood Pressure ; Diabetes Mellitus, Experimental/complications ; Diabetic Nephropathies/etiology ; Diabetic Nephropathies/pathology ; Enzyme Inhibitors/administration & dosage ; Enzyme Inhibitors/toxicity ; Male ; NAD/toxicity ; NG-Nitroarginine Methyl Ester/administration & dosage ; NG-Nitroarginine Methyl Ester/toxicity ; Nitric Oxide/metabolism ; Rats ; Rats, Wistar |
Chemical Substances | Blood Glucose ; Enzyme Inhibitors ; NAD (0U46U6E8UK) ; Nitric Oxide (31C4KY9ESH) ; NG-Nitroarginine Methyl Ester (V55S2QJN2X) |
Language | English |
Publishing date | 2021-11-25 |
Publishing country | Switzerland |
Document type | Journal Article |
ZDB-ID | 2019364-6 |
ISSN | 1422-0067 ; 1422-0067 ; 1661-6596 |
ISSN (online) | 1422-0067 |
ISSN | 1422-0067 ; 1661-6596 |
DOI | 10.3390/ijms222312767 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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