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Intermittent fasting combined with supplementation with Ayurvedic herbs reduces anxiety in middle aged female rats by anti-inflammatory pathways

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Abstract

Intermittent fasting-dietary restriction (IF-DR) is an increasingly popular intervention to promote healthy aging and delay age associated decline in brain functions. Also, the use of herbal interventions is gaining attention due to their non-pharmacological approach to treat several abnormalities and promote general health with least side effects. The present study was aimed to investigate the synergistic effects of IF-DR regimen with herbal supplementation on anxiety-like behavior and neuroinflammation in middle aged female rats. We used dried leaf powder of Withania somnifera and dried stem powder of Tinospora cordifolia for our study. The rats were divided into three groups: (1) Control group fed ad libitum (AL); (2) rats deprived of food for full day and fed ad libitum on every alternate day (IF-DR); and (3) IF-DR and herbal extract (DRH) group in which rats were fed ad libitum with herbal extract supplemented diet, every alternate day. Post regimen, the rats were tested for anxiety-like behavior and further used for study of key inflammatory molecules (NFκB, Iba1, TNFα, IL-1β, IL-6) and glial marker (GFAP) in hippocampus and piriform cortex regions of brain. The study was further extended to explore the effect of DRH regimen on stress response protein (HSP70) and calcium dependent regulators of synaptic plasticity (CaMKIIα, Calcineurin). Our data demonstrated that DRH regimen reduced anxiety-like behavior in middle age female rats and associated neuroinflammation by ameliorating key inflammatory cytokines and modulated stress response. The present data may provide scientific validation for anxiolytic and anti-inflammatory potential of herbal intervention combined with short term IF-DR regimen.

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Acknowledgements

Harpal Singh is thankful to DST, GOI for fellowship grant during the entire course of study. Taranjeet Kaur and Shaffi Manchanda are thankful to University Grants Commission (UGC), GOI for fellowship grant during the entire course of study. Infrastructure provided by UGC under University with Potential for Excellence (UPE) and Centre with Potential for Excellence in Particular Area (CPEPA) schemes and DBT under DISC facility is highly acknowledged. The funding source had no role in study design; collection, analysis and interpretation of data; in writing of report; and in decision to submit the article for publication.

Funding

The current research work was funded by Department of Biotechnology (DBT), Government of India (GOI) and Department of Science and Technology (DST), GOI grants to Gurcharan Kaur.

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Correspondence to Gurcharan Kaur.

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The authors declare that they have no conflict of interest.

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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. All procedures performed in studies involving animals were in accordance with the ethical standards of the institution or practice at which the studies were conducted.

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Singh, H., Kaur, T., Manchanda, S. et al. Intermittent fasting combined with supplementation with Ayurvedic herbs reduces anxiety in middle aged female rats by anti-inflammatory pathways. Biogerontology 18, 601–614 (2017). https://doi.org/10.1007/s10522-017-9706-8

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  • DOI: https://doi.org/10.1007/s10522-017-9706-8

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