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Timing of manganese exposure impacts adolescent cognition, study reveals - Video

Published On 2023-11-15T09:15:27+05:30  |  Updated On 15 Nov 2023 9:15 AM IST
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Overview

Prenatal manganese exposure is linked to lower odds of intrusion errors in adolescent cognition, while childhood manganese exposure is associated with improved short-delay free recall, particularly in males, according to a recent study.

Manganese (Mn), a metal that is both essential and potentially toxic, has long intrigued researchers due to its intricate relationship with neurodevelopment. However, the timing of exposure to manganese and its specific impact on cognitive function in adolescents has remained relatively unexplored until now.

The study enrolled 140 Italian adolescents, aged between 10 and 14 years, in the Public Health Impact of Metals Exposure study. Researchers assessed manganese levels in deciduous teeth, providing insights into prenatal, postnatal, and early childhood exposure to the metal.

A doubling in prenatal manganese levels was associated with lower odds of making an intrusion error, indicating a protective effect of early exposure on cognitive function. However, this beneficial association was not observed for other exposure periods.

In contrast, childhood manganese exposure exhibited a different influence. A doubling in childhood manganese levels was beneficially associated with short-delay free recall. This cognitive benefit was particularly pronounced in males. Once again, these associations were not observed for manganese exposure during the postnatal period.

Reference: Alexa Friedman, Samantha Schildroth, Julia A. Bauer, Brent A. Coull, Donald R. Smith, Donatella Placidi,et al,Early-life manganese exposure during multiple developmental periods and adolescent verbal learning and memory, Neurotoxicology and Teratology, Volume 100, 2023, 107307, ISSN 0892-0362, https://doi.org/10.1016/j.ntt.2023.107307.(https://www.sciencedirect.com/science/article/pii/S0892036223001575)

Speakers

Isra Zaman

B.Sc Life Sciences, M.Sc Biotechnology, B.Ed

Isra Zaman is a Life Science graduate from Daulat Ram College, Delhi University, and a postgraduate in Biotechnology from Amity University. She has a flair for writing, and her roles at Medicaldialogues include that of a Sr. content writer and a medical correspondent. Her news pieces cover recent discoveries and updates from the health and medicine sector. She can be reached at editorial@medicaldialogues.in.

Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751
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