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Kacimi FE, Didou L, Ed Day S, Azzaoui FZ, Ramchoun M, Berrougui H, Khalki H, Boulbaroud S. Gut microbiota, vitamin A deficiency and autism spectrum disorder: an interconnected trio - a systematic review. Nutr Neurosci 2024:1-11. [PMID: 39137920 DOI: 10.1080/1028415x.2024.2389498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Accumulating evidence proves that children with autism have gastrointestinal problems. However, a significant difference in gut microbiota (GM) exists between autistic and non-autistic children. These changes in the GM may stem from several factors. Recently, researchers focused on nutritional factors, especially vitamin deficiency. Thus, our systematic review investigates the connections among autism, GM alterations, and vitamin A deficiency (VAD), by analyzing studies sourced from PubMed and Embase databases spanning from 2010 to 2022. Adhering to PRISMA guidelines, we meticulously selected 19 pertinent studies that established links between autism and GM changes or between autism and VAD. Our findings uniformly point to significant alterations in the GM of individuals with autism, indicating these changes as promising biomarkers for the disorder. Despite the consistent association of GM alterations with autism, our analysis revealed no notable differences in GM composition between individuals with autism and those experiencing VAD. This suggests that VAD, especially when encountered early in life, might play a role in the onset of autism. Furthermore, our review underscores a distinct correlation between reduced levels of retinoic acid in children with autism, a disparity that could relate to the severity of autism symptoms. The implications of our findings are twofold: they not only reinforce the significance of GM alterations as potential diagnostic markers but also spotlight the critical need for further research into nutritional interventions. Specifically, vitamin A supplementation emerges as a promising avenue for alleviating autism symptoms, warranting deeper investigation into its therapeutic potential.
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Affiliation(s)
- Fatima Ezzahra Kacimi
- Biotechnology and Sustainable Development of Natural Resources Unit, Multidisciplinary Faculty, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Latifa Didou
- Unit of Neuroscience, Neuroimmunology and Behavior, Laboratory of Biology and Health, Department of Biology, Faculty of Science, Ibn Tofail University, Kenitra, Morocco
| | - Soumia Ed Day
- Unit of Neuroscience, Neuroimmunology and Behavior, Laboratory of Biology and Health, Department of Biology, Faculty of Science, Ibn Tofail University, Kenitra, Morocco
| | - Fatima Zahra Azzaoui
- Unit of Neuroscience, Neuroimmunology and Behavior, Laboratory of Biology and Health, Department of Biology, Faculty of Science, Ibn Tofail University, Kenitra, Morocco
| | - Mhamed Ramchoun
- Biotechnology and Sustainable Development of Natural Resources Unit, Multidisciplinary Faculty, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Hicham Berrougui
- Biotechnology and Sustainable Development of Natural Resources Unit, Multidisciplinary Faculty, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Hanane Khalki
- Biotechnology and Sustainable Development of Natural Resources Unit, Multidisciplinary Faculty, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Samira Boulbaroud
- Biotechnology and Sustainable Development of Natural Resources Unit, Multidisciplinary Faculty, Sultan Moulay Slimane University, Beni Mellal, Morocco
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Yoo HJ. Understanding Evidence-Based Practice for Autism Spectrum Disorder: Korean Practice Clinical Guidelines. Soa Chongsonyon Chongsin Uihak 2024; 35:1. [PMID: 38204747 PMCID: PMC10774560 DOI: 10.5765/jkacap.230076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024] Open
Affiliation(s)
- Hee Jeong Yoo
- Department of Psychiatry, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
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