Relationship between apolipoprotein E4 genotype and white matter integrity in HIV-positive young adults in South Africa

Jacqueline Hoare; Jenny Westgarth-Taylor; Jean Paul Fouche; Marc Combrinck; Bruce Spottiswoode; Dan J. Stein; John A. Joska

doi:10.1007/s00406-012-0341-8

Relationship between apolipoprotein E4 genotype and white matter integrity in HIV-positive young adults in South Africa

Jacqueline Hoare, Jenny Westgarth-Taylor, Jean Paul Fouche, Marc Combrinck, Bruce Spottiswoode, Dan J. Stein, John A. Joska

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

HIV-associated dementia (HAD) is a serious neuropsychiatric disorder affecting people with AIDS. Host genotype may affect the pathogenesis of HIV in the central nervous system (CNS). One gene relevant to the individual variation in acquiring HAD may be Apolipoprotein E (ApoE). We aimed to investigate the relationship of ApoE genotype to neuropsychological function and white matter integrity of the corpus callosum in a region of interest a priori analysis of HIV-positive subjects with clade C HIV. Forty-five subjects underwent ApoE genotyping, neuropsychological testing, and diffusion tensor imaging (DTI). Subjects (n = 24) with at least one ε4 allele when compared to subjects with no ε4 allele (n = 19) had significantly decreased immediate and delayed recall on the Hopkins Verbal Learning test (p = 0.05) and significantly decreased fractional anisotrophy in the corpus callosum (p = 0.007). These data indicate that the ε4 allelic variant of ApoE is associated with memory impairment and white matter damage of the corpus callosum in HIV-positive subjects.

Original language	English
Pages (from-to)	189-195
Number of pages	7
Journal	European Archives of Psychiatry and Clinical Neuroscience
Volume	263
Issue number	3
DOIs	https://doi.org/10.1007/s00406-012-0341-8
State	Published - Apr 2013
Externally published	Yes

Keywords

Brain imaging diffusion tensor
Genotyping
HIV dementia
Neuropsychiatry

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title = "Relationship between apolipoprotein E4 genotype and white matter integrity in HIV-positive young adults in South Africa",

abstract = "HIV-associated dementia (HAD) is a serious neuropsychiatric disorder affecting people with AIDS. Host genotype may affect the pathogenesis of HIV in the central nervous system (CNS). One gene relevant to the individual variation in acquiring HAD may be Apolipoprotein E (ApoE). We aimed to investigate the relationship of ApoE genotype to neuropsychological function and white matter integrity of the corpus callosum in a region of interest a priori analysis of HIV-positive subjects with clade C HIV. Forty-five subjects underwent ApoE genotyping, neuropsychological testing, and diffusion tensor imaging (DTI). Subjects (n = 24) with at least one ε4 allele when compared to subjects with no ε4 allele (n = 19) had significantly decreased immediate and delayed recall on the Hopkins Verbal Learning test (p = 0.05) and significantly decreased fractional anisotrophy in the corpus callosum (p = 0.007). These data indicate that the ε4 allelic variant of ApoE is associated with memory impairment and white matter damage of the corpus callosum in HIV-positive subjects.",

keywords = "Brain imaging diffusion tensor, Genotyping, HIV dementia, Neuropsychiatry",

author = "Jacqueline Hoare and Jenny Westgarth-Taylor and Fouche, {Jean Paul} and Marc Combrinck and Bruce Spottiswoode and Stein, {Dan J.} and Joska, {John A.}",

note = "Funding Information: Acknowledgments JH has received support from the Biological Psychiatry special interest group of the South Africa Society of Psychiatrists and the Discovery Foundation Academic Award of South Africa. JJ has received support from the National Research Foundation, the Biological Psychiatry special interest group of the South Africa Society of Psychiatrists, the Medical Research Foundation of South Africa and the Faculty of Health Sciences Research Committee, University of Cape Town. DS is supported by the NRF and MRC.",

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doi = "10.1007/s00406-012-0341-8",

language = "English",

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AU - Hoare, Jacqueline

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AU - Combrinck, Marc

AU - Spottiswoode, Bruce

AU - Stein, Dan J.

AU - Joska, John A.

N1 - Funding Information: Acknowledgments JH has received support from the Biological Psychiatry special interest group of the South Africa Society of Psychiatrists and the Discovery Foundation Academic Award of South Africa. JJ has received support from the National Research Foundation, the Biological Psychiatry special interest group of the South Africa Society of Psychiatrists, the Medical Research Foundation of South Africa and the Faculty of Health Sciences Research Committee, University of Cape Town. DS is supported by the NRF and MRC.

PY - 2013/4

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N2 - HIV-associated dementia (HAD) is a serious neuropsychiatric disorder affecting people with AIDS. Host genotype may affect the pathogenesis of HIV in the central nervous system (CNS). One gene relevant to the individual variation in acquiring HAD may be Apolipoprotein E (ApoE). We aimed to investigate the relationship of ApoE genotype to neuropsychological function and white matter integrity of the corpus callosum in a region of interest a priori analysis of HIV-positive subjects with clade C HIV. Forty-five subjects underwent ApoE genotyping, neuropsychological testing, and diffusion tensor imaging (DTI). Subjects (n = 24) with at least one ε4 allele when compared to subjects with no ε4 allele (n = 19) had significantly decreased immediate and delayed recall on the Hopkins Verbal Learning test (p = 0.05) and significantly decreased fractional anisotrophy in the corpus callosum (p = 0.007). These data indicate that the ε4 allelic variant of ApoE is associated with memory impairment and white matter damage of the corpus callosum in HIV-positive subjects.

AB - HIV-associated dementia (HAD) is a serious neuropsychiatric disorder affecting people with AIDS. Host genotype may affect the pathogenesis of HIV in the central nervous system (CNS). One gene relevant to the individual variation in acquiring HAD may be Apolipoprotein E (ApoE). We aimed to investigate the relationship of ApoE genotype to neuropsychological function and white matter integrity of the corpus callosum in a region of interest a priori analysis of HIV-positive subjects with clade C HIV. Forty-five subjects underwent ApoE genotyping, neuropsychological testing, and diffusion tensor imaging (DTI). Subjects (n = 24) with at least one ε4 allele when compared to subjects with no ε4 allele (n = 19) had significantly decreased immediate and delayed recall on the Hopkins Verbal Learning test (p = 0.05) and significantly decreased fractional anisotrophy in the corpus callosum (p = 0.007). These data indicate that the ε4 allelic variant of ApoE is associated with memory impairment and white matter damage of the corpus callosum in HIV-positive subjects.

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Relationship between apolipoprotein E4 genotype and white matter integrity in HIV-positive young adults in South Africa

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