S Rehan Ahmad

Dr. S Rehan Ahmad

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Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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18 July 2025 in Brain Sciences
Verified
Journal Article
Open access
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S Rehan AhmadS Rehan Ahmad
S Rehan Ahmad
AAAbdullah M. AlShahrani
Abdullah M. AlShahrani
AKAnupriya Kumari
Anupriya Kumari
Background: More than merely determining our sleep pattern, our body’s internal clock also improves the quality of our sleep, alleviates the symptoms of depression, and maintains the balance of our gut flora. Methods: We carried out a 12-week randomized controlled trial with 99 adults from Kolkata, New Delhi, and Pune who reported sleep problems and symptoms of depression or anxiety. Participants received either a probiotic formulated to improve sleep quality and reduce depressive symptoms or a placebo. We tracked sleep using overnight studies and wearable devices, assessed depressive symptoms with standardized questionnaires, and analyzed stool samples to profile gut bacteria and their metabolites using gene sequencing and metabolomics. Advanced statistics and machine learning helped us pinpoint the key microbial and metabolic factors tied to sleep and mental health. Results: At the start, participants with disrupted sleep and depressive symptoms had fewer beneficial gut bacteria like Bifidobacterium and Lactobacillus, more inflammation-related microbes, and lower levels of helpful short-chain fatty acids. These imbalances were linked to poorer sleep efficiency, less REM sleep, and higher depression and anxiety scores. After 12 weeks, those taking the circadian-supporting probiotic saw a statistically significant increase in beneficial gut bacteria, improved sleep efficiency (+7.4%, p = 0.02), and greater reductions in depression and anxiety compared to the placebo. Increases in SCFA-producing bacteria most strongly predicted improvements. Conclusions: Our results show that taking a probiotic supplement can help bring your gut back into balance, support better sleep, and lift symptoms of depression and anxiety. This offers a hopeful and practical option for people looking for real relief from these deeply connected challenges.

20 December 2024 in Frontiers in Pharmacology
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Journal Article
Open access
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S Rehan AhmadS Rehan Ahmad
S Rehan Ahmad
MZMd. Zeyaullah
Md. Zeyaullah
MKMohammad Suhail Khan
Mohammad Suhail Khan
AAAbdullah M. AlShahrani
Abdullah M. AlShahrani
AAAbdelrhman A. Galaleldin Altijani
Abdelrhman A. Galaleldin Altijani
AMAwad Osman Abdalla Mohamed
Awad Osman Abdalla Mohamed
Neurodegenerative disorders such as Alzheimer’s disease (AD), Parkinson’s disease (PD), Huntington’s disease (HD), and amyotrophic lateral sclerosis (ALS) are characterized by the progressive degeneration of neuronal structure and function, leading to severe cognitive and motor impairments. These conditions present significant challenges to healthcare systems, and traditional treatments often fail to account for genetic variability among patients, resulting in inconsistent therapeutic outcomes. Pharmacogenomics aims to tailor medical treatments based on an individual’s genetic profile, thereby improving therapeutic efficacy and reducing adverse effects. This focused review explores the genetic factors influencing drug responses in neurodegenerative diseases and the potential of pharmacogenomics to revolutionize their treatment. Key genetic markers, such as the APOE ε4 allele in AD and the CYP2D6 polymorphisms in PD, are highlighted for their roles in modulating drug efficacy. Additionally, advancements in pharmacogenomic tools, including genome-wide association studies (GWAS), next-generation sequencing (NGS), and CRISPR-Cas9, are discussed for their contributions to personalized medicine. The application of pharmacogenomics in clinical practice and its prospects, including ethical and data integration challenges, are also examined.

8 April 2024 in Frontiers in Bioscience-Landmark
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Journal Article
Open access
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S Rehan AhmadS Rehan Ahmad
S Rehan Ahmad
MZMd. Zeyaullah
Md. Zeyaullah
AAAbdullah M. AlShahrani
Abdullah M. AlShahrani
ADAdam Dawria
Adam Dawria
HAHaroon Ali
Haroon Ali
EHEjaz Rizvi Hussain
Ejaz Rizvi Hussain
Innate lymphocytes, including microglial cells, astrocytes, and oligodendrocytes, play a crucial role in initiating neuroinflammatory reactions inside the central nervous system (CNS). The prime focus of this paper is on the involvement and interplay of neurons and glial cells in neurological disorders such as Alzheimer’s Disease (AD), Autism Spectrum Disorder (ASD), epilepsy, and multiple sclerosis (MS). In this review, we explore the specific contributions of microglia and astrocytes and analyzes multiple pathways implicated in neuroinflammation and disturbances in excitatory and inhibitory processes. Firstly, we elucidate the mechanisms through which toxic protein accumulation in AD results in synaptic dysfunction and deregulation of the immune system and examines the roles of microglia, astrocytes, and hereditary factors in the pathogenesis of the disease. Secondly, we focus on ASD and the involvement of glial cells in the development of the nervous system and the formation of connections between neurons and investigates the genetic connections associated with these processes. Lastly, we also address the participation of glial cells in epilepsy and MS, providing insights into their pivotal functions in both conditions. We also tried to give an overview of seven different pathways like toll-like receptor signalling pathway, MyD88-dependent and independent pathway, etc and its relevance in the context with these neurological disorders. In this review, we also explore the role of activated glial cells in AD, ASD, epilepsy, and MS which lead to neuroinflammation. Even we focus on excitatory and inhibitory imbalance in all four neurological disorders as imbalance affect the proper functioning of neuronal circuits. Finally, this review concludes that there is necessity for additional investigation on glial cells and their involvement in neurological illnesses.

25 March 2023 in THE SCIENTIFIC TEMPER
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Journal Article
Open access
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S Rehan AhmadS Rehan Ahmad
S Rehan Ahmad
KPKdv Prasad
Kdv Prasad
SBSeema Bhakuni
Seema Bhakuni
AHAmit Hedau
Amit Hedau
PNP B Shankar Narayan
P B Shankar Narayan
PPP Parameswari
P Parameswari
This study aims to determine how working women’s emotional intelligence and work-life balance affect job stress. The phrase “work-life balance” refers to methods for balancing the demands of employees’ personal and professional lives. It is challenging to find time to balance work and personal obligations due to the expectations and pressures of the workplace. The advancement of women is impacted by women who take up the problem of work-life balance. Organizations may also foster work environments and cultures that show concern for their employees’ lives outside of the office. Organizations should regularly assess their current work procedures to identify those that increase employee stress and inefficiency. In light of this, the current study was conducted to assess the work-life balance of Indian career women. The current study focuses on how emotional intelligence and role efficacy connect to career women’s work-life balance. Emotional intelligence is significantly impacted by factors impacting role effectiveness. Our emotions influence every action, choice, and evaluation we make. People with emotional intelligence know this and utilize their thoughts to control their emotions rather than allowing them to control them.

1 December 2020 in Annals of Phytomedicine An International Journal
Verified
Journal Article
Closed access
S Rehan AhmadS Rehan Ahmad
S Rehan Ahmad
PGPritha Ghosh
Pritha Ghosh