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The metabolomic resetting effect of FG4592 in AKI to CKD transition (Part 2)

ABSTRACT: C57BL/6 mice were anesthetized using isoflurane. UIR was induced by clamping the right renal pedicle for 45 minutes and then releasing it to allow reperfusion, leaving the left kidney intact. Sham treated mice served as controls. Each mouse was located supine on a thermostatic pad (37 °C) to maintain its body temperature throughout the whole process. After 3 days of recovery, the mice received a daily intraperitoneal (i.p.) injection of FG4592 (10 mg/kg) or vehicle for 7 consecutive days. After treatment, the mice were sacrificed.Non-target metabolomics analysis was carried out using the kidney tissues of mice sacrificed at day 10 after UIR.

ORGANISM(S): Mouse Mus Musculus

TISSUE(S): Kidney

DISEASE(S): Kidney Disease

SUBMITTER: Chen Weiyi

PROVIDER: ST001856 | MetabolomicsWorkbench | Thu Jul 01 00:00:00 BST 2021

REPOSITORIES: MetabolomicsWorkbench

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Project description:Evolution of glomerulonephritis (GN) to tubulointerstitial disease is a universal antecedent to the development of chronic kidney disease (CKD). There is also evidence that angiotensin converting enzyme (ACE) inhibition may attenuate the development of CKD in some forms of glomerulonephritis. We tested the role of ACE inhibition in a model of GN in which complement-dependent tubulointerstitial disease develops. GN was induced in C57BL/6 mice with intraperitoneal injections of horse spleen apoferritin (HSA) using lipopolysaccharide (LPS) as an adjuvant. Four groups of six animals were studied: saline-injected control mice treated with captopril or water, and GN mice treated with captopril or water. GN developed in all HSA-treated animals. In those receiving captopril, however, proteinuria (albumin/creatinine ratio) was significantly reduced by captopril treatment. Array screening was used to examined the expression of collagen-related genes and determine if these effects could be mediated by regulation of collagen genes. Six genes were identified for further analysis by quantitative RT-PCR. This model demonstrates that tubulointerstitial disease can be attenuated by ACE inhibition, with clinical, histologic, and gene expression measures. All protocols were approved by the Institutional Animal Care and Use Committee at SUNY Upstate Medical University. We employed four groups of six mice each: saline-injected control mice with and without captopril, and GN with and without captopril. C57BL/6 mice were purchased from The Jackson Laboratories (Bar Harbor, ME). Glomerulonephritis (GN) was induced by intraperitoneal (i.p.) injection of 10 mg of apoferritin from horse spleen (HSA, Sigma, St. Louis, MO) five days per week, with i.p. injection of 100 micrograms lipopolysaccharide (LPS, from Salmonella minnesota; EMD Biosciences, La Jolla, CA), as adjuvant, three times per week. Control animals received equal volumes of 0.15 M NaCl by i.p. injection. Injections were begun when the mice were approximately eight weeks of age and were continued for six weeks. Captopril, at 100 mg/kg/day was given in the drinking water. After 9 weeks, the animals were euthanized and kidneys were removed for RNA purification and analysis.

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The metabolomic resetting effect of FG4592 in AKI to CKD transition (Part 2)

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