Effect of BDNF Val66Met polymorphism on hippocampal subfields in multiple sclerosis patients

Brain-derived neurotrophic factor (BDNF) Val66Met polymorphism was shown to strongly affect BDNF function, but its role in modulating gray matter damage in multiple sclerosis (MS) patients is still not clear. Given BDNF relevance on the hippocampus, we aimed to explore BDNF Val66Met polymorphism eff...

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Veröffentlicht in:Molecular psychiatry 2022-02, Vol.27 (2), p.1010-1019
Hauptverfasser: De Meo, Ermelinda, Portaccio, Emilio, Prestipino, Elio, Nacmias, Benedetta, Bagnoli, Silvia, Razzolini, Lorenzo, Pastò, Luisa, Niccolai, Claudia, Goretti, Benedetta, Bellinvia, Angelo, Fonderico, Mattia, Giorgio, Antonio, Stromillo, Maria Laura, Filippi, Massimo, Sorbi, Sandro, De Stefano, Nicola, Amato, Maria Pia
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container_issue 2
container_start_page 1010
container_title Molecular psychiatry
container_volume 27
creator De Meo, Ermelinda
Portaccio, Emilio
Prestipino, Elio
Nacmias, Benedetta
Bagnoli, Silvia
Razzolini, Lorenzo
Pastò, Luisa
Niccolai, Claudia
Goretti, Benedetta
Bellinvia, Angelo
Fonderico, Mattia
Giorgio, Antonio
Stromillo, Maria Laura
Filippi, Massimo
Sorbi, Sandro
De Stefano, Nicola
Amato, Maria Pia
description Brain-derived neurotrophic factor (BDNF) Val66Met polymorphism was shown to strongly affect BDNF function, but its role in modulating gray matter damage in multiple sclerosis (MS) patients is still not clear. Given BDNF relevance on the hippocampus, we aimed to explore BDNF Val66Met polymorphism effect on hippocampal subfield volumes and its role in cognitive functioning in MS patients. Using a 3T scanner, we obtained dual-echo and 3DT1-weighted sequences from 50 MS patients and 15 healthy controls (HC) consecutively enrolled. MS patients also underwent genotype analysis of BDNF, neurological and neuropsychological evaluation. Hippocampal subfields were segmented by using Freesurfer. The BDNF Val66Met polymorphism was found in 22 MS patients (44%). Compared to HC, MS patients had lower volume in: bilateral hippocampus-amygdala transition area (HATA); cornus ammonis (CA)1, granule cell layer of dentate gyrus (GCL-DG), CA4 and CA3 of the left hippocampal head; molecular layer (ML) of the left hippocampal body; presubiculum of right hippocampal body and right fimbria. Compared to BDNF Val66Val, Val66Met MS patients had higher volume in bilateral hippocampal tail; CA1, ML, CA3, CA4, and GCL-DG of left hippocampal head; CA1, ML, and CA3 of the left hippocampal body; left HATA and presubiculum of the right hippocampal head. In MS patients, higher lesion burden was associated with lower volume of presubiculum of right hippocampal body; lower volume of left hippocampal tail was associated with worse visuospatial memory performance; lower volume of left hippocampal head with worse performance in semantic fluency. Our findings suggest the BNDF Val66Met polymorphism may have a protective role in MS patients against both hippocampal atrophy and cognitive impairment. BDNF genotype might be a potential biomarker for predicting cognitive prognosis, and an interesting target to study for neuroprotective strategies.
doi_str_mv 10.1038/s41380-021-01345-1
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Given BDNF relevance on the hippocampus, we aimed to explore BDNF Val66Met polymorphism effect on hippocampal subfield volumes and its role in cognitive functioning in MS patients. Using a 3T scanner, we obtained dual-echo and 3DT1-weighted sequences from 50 MS patients and 15 healthy controls (HC) consecutively enrolled. MS patients also underwent genotype analysis of BDNF, neurological and neuropsychological evaluation. Hippocampal subfields were segmented by using Freesurfer. The BDNF Val66Met polymorphism was found in 22 MS patients (44%). Compared to HC, MS patients had lower volume in: bilateral hippocampus-amygdala transition area (HATA); cornus ammonis (CA)1, granule cell layer of dentate gyrus (GCL-DG), CA4 and CA3 of the left hippocampal head; molecular layer (ML) of the left hippocampal body; presubiculum of right hippocampal body and right fimbria. Compared to BDNF Val66Val, Val66Met MS patients had higher volume in bilateral hippocampal tail; CA1, ML, CA3, CA4, and GCL-DG of left hippocampal head; CA1, ML, and CA3 of the left hippocampal body; left HATA and presubiculum of the right hippocampal head. In MS patients, higher lesion burden was associated with lower volume of presubiculum of right hippocampal body; lower volume of left hippocampal tail was associated with worse visuospatial memory performance; lower volume of left hippocampal head with worse performance in semantic fluency. Our findings suggest the BNDF Val66Met polymorphism may have a protective role in MS patients against both hippocampal atrophy and cognitive impairment. 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Given BDNF relevance on the hippocampus, we aimed to explore BDNF Val66Met polymorphism effect on hippocampal subfield volumes and its role in cognitive functioning in MS patients. Using a 3T scanner, we obtained dual-echo and 3DT1-weighted sequences from 50 MS patients and 15 healthy controls (HC) consecutively enrolled. MS patients also underwent genotype analysis of BDNF, neurological and neuropsychological evaluation. Hippocampal subfields were segmented by using Freesurfer. The BDNF Val66Met polymorphism was found in 22 MS patients (44%). Compared to HC, MS patients had lower volume in: bilateral hippocampus-amygdala transition area (HATA); cornus ammonis (CA)1, granule cell layer of dentate gyrus (GCL-DG), CA4 and CA3 of the left hippocampal head; molecular layer (ML) of the left hippocampal body; presubiculum of right hippocampal body and right fimbria. Compared to BDNF Val66Val, Val66Met MS patients had higher volume in bilateral hippocampal tail; CA1, ML, CA3, CA4, and GCL-DG of left hippocampal head; CA1, ML, and CA3 of the left hippocampal body; left HATA and presubiculum of the right hippocampal head. In MS patients, higher lesion burden was associated with lower volume of presubiculum of right hippocampal body; lower volume of left hippocampal tail was associated with worse visuospatial memory performance; lower volume of left hippocampal head with worse performance in semantic fluency. Our findings suggest the BNDF Val66Met polymorphism may have a protective role in MS patients against both hippocampal atrophy and cognitive impairment. BDNF genotype might be a potential biomarker for predicting cognitive prognosis, and an interesting target to study for neuroprotective strategies.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>34650209</pmid><doi>10.1038/s41380-021-01345-1</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0001-5531-1111</orcidid><orcidid>https://orcid.org/0000-0002-9662-1762</orcidid><orcidid>https://orcid.org/0000-0001-9338-9040</orcidid><orcidid>https://orcid.org/0000-0002-5485-0479</orcidid></addata></record>
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identifier ISSN: 1359-4184
ispartof Molecular psychiatry, 2022-02, Vol.27 (2), p.1010-1019
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subjects 38
45/77
59/57
631/208
631/378
631/477
692/53/2422
Amygdala
Atrophy
Atrophy - pathology
Behavioral Sciences
Biological Psychology
Brain-derived neurotrophic factor
Brain-Derived Neurotrophic Factor - genetics
Cognitive ability
Cognitive Dysfunction - pathology
Dentate gyrus
Fornix
Gene polymorphism
Head
Hippocampus
Hippocampus - diagnostic imaging
Hippocampus - pathology
Humans
Magnetic Resonance Imaging
Medicine
Medicine & Public Health
Multiple sclerosis
Multiple Sclerosis - genetics
Multiple Sclerosis - pathology
Neuroprotection
Neurosciences
Pharmacotherapy
Polymorphism
Presubiculum
Psychiatry
Spatial memory
Statins
Substantia grisea
title Effect of BDNF Val66Met polymorphism on hippocampal subfields in multiple sclerosis patients
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