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• W2767658959 abstract "Profound sex differences in human immunodeficiency virus type-1 (HIV-1) have been repeatedly reported. Females, who account for 51% of HIV-1 seropositive individuals, are inadequately represented in clinical and preclinical studies, as well as in the description of HIV-1 associated neurocognitive disorders (HAND). Direct comparisons of neurocognitive decline in women and men must be made to address this underrepresentation. The effect of biological sex (i.e., the biological factors, including chromosomes and hormones, determining male or female characteristics; WHO, 2017) on sustained attention, which is commonly impaired in HIV-1 seropositive individuals, was investigated in intact HIV-1 transgenic (Tg) and control animals using a signal detection operant task. Analyses revealed a robust sex difference in the rate of task acquisition, collapsed across genotype, with female animals meeting criteria in shaping (at least 60 reinforcers for three consecutive or five non-consecutive sessions) and signal detection (70% accuracy for five consecutive or seven non-consecutive sessions) significantly more slowly than male animals. Presence of the HIV-1 transgene also had a significant effect on shaping and signal detection acquisition, with HIV-1 Tg animals displaying significant deficits in the rate of acquisition relative to control animals–deficits that were more prominent in female HIV-1 Tg animals. Once the animals’ reached asymptotic performance in the signal detection task, female animals achieved a lower percent accuracy across test sessions and exhibited a decreased response rate relative to male animals, although there was no compelling evidence for any effect of transgene. Results indicate that the factor of biological sex may be a moderator of the influence of the HIV-1 transgene on signal detection. Understanding the impact of biological sex on neurocognitive deficits in HIV-1 is crucial for the development of sex-based therapeutics and cure strategies." @default.
• W2767658959 created "2017-11-17" @default.
• W2767658959 creator A5025417992 @default.
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• W2767658959 date "2017-11-06" @default.
• W2767658959 modified "2023-10-04" @default.
• W2767658959 title "Sex Matters: Robust Sex Differences in Signal Detection in the HIV-1 Transgenic Rat" @default.
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• W2767658959 doi "https://doi.org/10.3389/fnbeh.2017.00212" @default.
• W2767658959 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5681841" @default.
• W2767658959 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29163084" @default.
• W2767658959 hasPublicationYear "2017" @default.
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