PMID- 35064868 OWN - NLM STAT- MEDLINE DCOM- 20220428 LR - 20230829 IS - 1573-7365 (Electronic) IS - 0885-7490 (Linking) VI - 37 IP - 4 DP - 2022 Apr TI - Epigenetic regulation and autophagy modulation debilitates insulin resistance associated Alzheimer's disease condition in rats. PG - 927-944 LID - 10.1007/s11011-021-00846-w [doi] AB - Insulin resistance (IR) and accumulation of amyloid beta (Abeta) oligomers are potential causative factor for Alzheimer's Disease (AD). Simultaneously, enhanced clearance level of these oligomers through autophagy activation bring novel insights into their therapeutic paradigm. Autophagy activation is negatively correlated with mammalian target of rapamycin (mTOR) and dysregulated mTOR level due to epigenetic alterations can further culminate towards AD pathogenesis. Therefore, in the current study we explored the neuroprotective efficacy of rapamycin (rapa) and vorinostat (vori) in-vitro and in-vivo. Abeta(1-42) treated SH-SY5Y cells were exposed to rapa (20 muM) and vori (4 muM) to analyse mRNA expression of amyloid precursor protein (APP), brain derived neurotrophic factor (BDNF), glial cell derived neurotrophic factor (GDNF), neuronal growth factor (NGF), beclin-1, microtubule-associated protein 1A/1B-light chain 3-phosphatidylethanolamine conjugate (LC3), lysosome-associated membrane protein 2 (LAMP2) and microtubule associated protein 2 (MAP2). In order to develop IR condition, rats were fed a high fat diet (HFD) for 8 weeks and then subjected to intracerebroventricular Abeta(1-42) administration. Subsequently, their treatment was initiated with rapa (1 mg/kg, i.p.) and vori (50 mg/kg, i.p.) once daily for 28 days. Morris water maze was performed to govern cognitive impairment followed by sacrification for subsequent mRNA, biochemical, western blot and histological estimations. For all the measured parameters, a significant improvement was observed amongst the combination treatment group in contrast to that of the HFD + Abeta(1-42) group and that of the groups treated with the drugs alone. Outcomes of the present study thus suggest that combination therapy with rapa and vori provide a prospective therapeutic approach to ameliorate AD symptoms exacerbated by IR. CI - (c) 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Kakoty, Violina AU - Kakoty V AUID- ORCID: 0000-0001-8366-8142 AD - Neuropsychopharmacology Division, Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Pilani Campus, Rajasthan, 333031, India. FAU - K C, Sarathlal AU - K C S AUID- ORCID: 0000-0003-2297-5258 AD - Neuropsychopharmacology Division, Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Pilani Campus, Rajasthan, 333031, India. FAU - Dubey, Sunil Kumar AU - Dubey SK AUID- ORCID: 0000-0002-7554-3232 AD - Neuropsychopharmacology Division, Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Pilani Campus, Rajasthan, 333031, India. AD - R&D Healthcare Division, Emami Ltd., Kolkatta, 700107, India. FAU - Yang, Chih-Hao AU - Yang CH AUID- ORCID: 0000-0002-8354-7874 AD - Department of Pharmacology, Taipei Medical University, Taipei, 110, Taiwan. FAU - Marathe, Sandhya Amol AU - Marathe SA AUID- ORCID: 0000-0002-7828-5478 AD - Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Pilani Campus, Rajasthan, 333031, India. FAU - Taliyan, Rajeev AU - Taliyan R AUID- ORCID: 0000-0003-2147-2990 AD - Neuropsychopharmacology Division, Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Pilani Campus, Rajasthan, 333031, India. rajeev.taliyan@pilani.bits-pilani.ac.in. LA - eng PT - Journal Article DEP - 20220122 PL - United States TA - Metab Brain Dis JT - Metabolic brain disease JID - 8610370 RN - 0 (Amyloid beta-Peptides) RN - 0 (RNA, Messenger) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - W36ZG6FT64 (Sirolimus) SB - IM MH - *Alzheimer Disease/metabolism MH - Amyloid beta-Peptides/metabolism MH - Animals MH - Autophagy MH - Epigenesis, Genetic MH - *Insulin Resistance/physiology MH - Mammals/metabolism MH - RNA, Messenger MH - Rats MH - Sirolimus/therapeutic use MH - TOR Serine-Threonine Kinases/metabolism OTO - NOTNLM OT - Alzheimer's disease OT - Autophagy OT - Histone deacetylase inhibitor OT - Insulin resistance OT - Rapamycin OT - Vorinostat EDAT- 2022/01/23 06:00 MHDA- 2022/04/29 06:00 CRDT- 2022/01/22 12:06 PHST- 2021/04/27 00:00 [received] PHST- 2021/09/23 00:00 [accepted] PHST- 2022/01/23 06:00 [pubmed] PHST- 2022/04/29 06:00 [medline] PHST- 2022/01/22 12:06 [entrez] AID - 10.1007/s11011-021-00846-w [pii] AID - 10.1007/s11011-021-00846-w [doi] PST - ppublish SO - Metab Brain Dis. 2022 Apr;37(4):927-944. doi: 10.1007/s11011-021-00846-w. Epub 2022 Jan 22.