The role of nitric oxide signaling in renoprotective effects of hydrogen sulfide against chronic kidney disease in rats: Involvement of oxidative stress, autophagy and apoptosis

• Published in: Journal of cellular physiology 2019-07, Vol.234 (7), p.11411-11423
• Main Authors: Shirazi, Mohammad Khabbaz, Azarnezhad, Asaad, Abazari, Mohammad Foad, Poorebrahim, Mansour, Ghoraeian, Pegah, Sanadgol, Nima, Bokharaie, Hanieh, Heydari, Sahar, Abbasi, Amin, Kabiri, Sahra, Aleagha, Maryam Nouri, Enderami, Seyed Ehsan, Dashtaki, Amir Savar, Askari, Hassan
• Format: Article
• Language: English
• Subjects: Animal models; Animals; Antioxidants; Antioxidants - metabolism; Apoptosis; Apoptosis - physiology; Arginine; Autophagy; Autophagy - physiology; chronic kidney disease (CKD); Fibrosis; Gene expression; Gene Expression Regulation - drug effects; Glucosaminidase; Guanidines - administration & dosage; Guanidines - pharmacology; Hydrogen; Hydrogen sulfide; Hydrogen Sulfide - metabolism; Inhibitors; Injury prevention; Kidney - enzymology; Kidney - pathology; Kidney diseases; Kidneys; Male; Markers; Nephrectomy; NG-Nitroarginine Methyl Ester - administration & dosage; NG-Nitroarginine Methyl Ester - pharmacology; Nitric oxide; nitric oxide (NO); Nitric Oxide - metabolism; Nitric-oxide synthase; Organ Size; Oxidative stress; Oxidative Stress - physiology; Phagocytosis; Random Allocation; Rats; Rats, Wistar; Renal Insufficiency, Chronic - drug therapy; Renal Insufficiency, Chronic - pathology; Ribonucleic acid; RNA; Sodium; Sulfides - administration & dosage; Sulfides - pharmacology; Urine
• ISSN: 0021-9541; 1097-4652
• DOI: 10.1002/jcp.27797

The interplay between H2S and nitric oxide (NO) is thought to contribute to renal functions. The current study was designed to assess the role of NO in mediating the renoprotective effects of hydrogen sulfide in the 5/6 nephrectomy (5/6 Nx) animal model. Forty rats were randomly assigned to 5 experimental groups: (a) Sham; (b) 5/6 Nx; (c) 5/6Nx+sodium hydrosulfide‐a donor of H 2S, (5/6Nx+sodium hydrosulfide [NaHS]); (d) 5/6Nx+NaHS+ L‐NAME (a nonspecific nitric oxide synthase [NOS] inhibitor); (e) 5/6Nx+NaHS+aminoguanidine (a selective inhibitor of inducible NOS [iNOS]). Twelve weeks after 5/6 Nx, we assessed the expressions of iNOS and endothelial NOS (eNOS), oxidative/antioxidant status, renal fibrosis, urine N‐acetyl‐b‐glucosaminidase (NAG) activity as the markers of kidney injury and various markers of apoptosis, inflammation, remodeling, and autophagy. NaHS treatment protected the animals against chronic kidney injury as depicted by improved oxidative/antioxidant status, reduced apoptosis, and autophagy and attenuated messenger RNA (mRNA) expression of genes associated with inflammation, remodeling, and NAG activity. Eight weeks Nω‐nitro‐l‐arginine methyl ester ( L‐NAME) administration reduced the protective effects of hydrogen sulfide. In contrast, aminoguanidine augmented the beneficial effects of hydrogen sulfide. Our finding revealed some fascinating interactions between NO and H 2S in the kidney. Moreover, the study suggests that NO, in an isoform‐dependent manner, can exert renoprotective effects in 5/6 Nx model of CKD.