PMID- 35504734 OWN - NLM STAT- MEDLINE DCOM- 20230124 LR - 20230504 IS - 2168-8370 (Electronic) IS - 2168-8362 (Print) IS - 2168-8362 (Linking) VI - 11 IP - 1 DP - 2023 Jan 2 TI - The therapeutic prospect of zinc oxide nanoparticles in experimentally induced diabetic nephropathy. PG - 2069966 LID - 10.1080/21688370.2022.2069966 [doi] LID - 2069966 AB - Diabetic nephropathy (DN) is the most frequent cause of end-stage renal failure. Zinc oxide nanoparticles (ZnO-NPs) are promising antidiabetic agents. Our aim was to evaluate the prospective efficacy of ZnO-NPs in treating DN in streptozotocin-induced diabetic rats. Rats were randomly dispersed into three sets: control group, DN group and DN + ZnO-NPs group. ZnO-NPs were given at a dose of 10 mg/kg/day by oral gavage for 4 weeks. Urine and blood samples were processed for biochemical analyses. Kidney samples were managed for light and electron microscopy studies. Immune histochemical staining of P53, aquaporin11 (AQP11) and mechanistic target of rapamycin (mTOR) were performed. Gene analyses of nephrin, podocin, beclin-1, LC3 and p62 were done. Administration of ZnO-NPs ameliorated the functional and histopathological alterations of the kidney in a rat model of diabetic nephropathy. ZnO-NPs retained the constancy of the glomerular filtration barrier and restored almost normal renal structure. This was confirmed by upregulation of mRNA expression of podocyte markers (nephrin and podocin) and AQP11 immune histochemical expression in the renal tubules. The beneficial outcomes of ZnO-NPs might be attributed to activation of autophagy through inhibiting mTOR signaling pathway. ZnO-NPs enhanced beclin-1 and LC3 mRNA expressions and reduced p62 mRNA expression. ZnO-NPs also exerted anti-apoptotic potential (evidenced by the decrease in p53 immune expression), anti-inflammatory and anti-oxidant effect [endorsed by suppression of serum cyclooxygenase-2 (COX-2) enzyme activity, tissue nuclear factor kappa beta (NF-kappaB) level and blood hypoxia-inducible factors (HIF-1alpha) level]. These results may point the way to an effective therapy of DN.Abbreviations: AQP11 Aquaporin11; BUN: Blood urea nitrogen; COX-2: Cyclooxygenase-2; DAB: 3, 3'-diaminobenzidine; DM: Diabetes mellitus; DN: Diabetic nephropathy; ELISA: Enzyme-linked immunosorbent assay; H&E: Hematoxylin & eosin; HIF-1alpha: Hypoxia-inducible factors; iNOS: inducible nitric oxide synthase; LC3: Microtubule-associated protein 1 light chain 3; mTOR: Mechanistic target of rapamycin; NF-kappaB: Nuclear factor kappa beta; NPs: Nanoparticles; PAS: Periodic acid Schiff; PCR: Polymerase chain reaction; PGE2: Prostaglandin E2; ROS: Reactive oxygen species; STZ: Streptozotocin; X +/- SEM: Mean +/- standard error of means; Zn: Zinc; ZnO-NPs: Zinc oxide nanoparticles. FAU - Abd El-Baset, Samia A AU - Abd El-Baset SA AUID- ORCID: 0000-0003-4147-3632 AD - Department of Medical Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig Egypt. FAU - Mazen, Nehad F AU - Mazen NF AUID- ORCID: 0000-0002-2942-2763 AD - Department of Medical Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig Egypt. FAU - Abdul-Maksoud, Rehab S AU - Abdul-Maksoud RS AUID- ORCID: 0000-0002-2241-1586 AD - Department of Medical Biochemistry, Faculty of Medicine, Zagazig University, Zagazig Egypt. FAU - Kattaia, Asmaa A A AU - Kattaia AAA AUID- ORCID: 0000-0002-7188-0100 AD - Department of Medical Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig Egypt. LA - eng PT - Journal Article DEP - 20220503 PL - United States TA - Tissue Barriers JT - Tissue barriers JID - 101601065 RN - SOI2LOH54Z (Zinc Oxide) RN - EC 1.14.99.1 (Cyclooxygenase 2) RN - 0 (NF-kappa B) RN - 5W494URQ81 (Streptozocin) RN - 0 (Beclin-1) RN - 0 (Tumor Suppressor Protein p53) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - W36ZG6FT64 (Sirolimus) RN - 0 (RNA, Messenger) SB - IM MH - Rats MH - Animals MH - *Diabetic Nephropathies/drug therapy MH - *Zinc Oxide/pharmacology/therapeutic use/metabolism MH - Cyclooxygenase 2/metabolism/therapeutic use MH - NF-kappa B/metabolism MH - Streptozocin/pharmacology/therapeutic use MH - *Diabetes Mellitus, Experimental/drug therapy/metabolism MH - Beclin-1/metabolism MH - Prospective Studies MH - Tumor Suppressor Protein p53 MH - TOR Serine-Threonine Kinases/metabolism/therapeutic use MH - *Nanoparticles MH - Sirolimus/therapeutic use MH - Hypoxia MH - RNA, Messenger/therapeutic use PMC - PMC9870014 OTO - NOTNLM OT - Autophagy OT - diabetic nephropathy OT - mTOR OT - rats OT - zinc oxide nanoparticles COIS- No potential conflict of interest was reported by the author(s). EDAT- 2022/05/04 06:00 MHDA- 2023/01/25 06:00 PMCR- 2023/05/03 CRDT- 2022/05/03 21:52 PHST- 2022/05/04 06:00 [pubmed] PHST- 2023/01/25 06:00 [medline] PHST- 2022/05/03 21:52 [entrez] PHST- 2023/05/03 00:00 [pmc-release] AID - 2069966 [pii] AID - 10.1080/21688370.2022.2069966 [doi] PST - ppublish SO - Tissue Barriers. 2023 Jan 2;11(1):2069966. doi: 10.1080/21688370.2022.2069966. Epub 2022 May 3.