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- W2790394987 abstract "Objective: Neprilysin (NEP) is the dominant Aβ peptide–degrading enzyme in the brain. HIV-1 subtype B transactivator of transcription protein is known to interfere with NEP function, but whether this is true of HIV-1C transactivator of transcription, which has a defective chemokine motif, is not known. This study aimed to analyze the impact of HIV subtype on NEP-mediated cleavage of Aβ by comparing cerebrospinal fluid (CSF) and serum levels of NEP between HIV+ (27 patients with HIV-1B and 26 with HIV-1C), healthy HIV− controls (n = 13), and patients with Alzheimer disease (n = 24). Methods: NEP and Aβ oligomers 38, 40, 42 levels were measured in CSF and serum by immunoassays. Ratios between NEP and Aβ-38, 40, 42, and total were calculated in CSF and serum. Comparisons between HIV(+) and HIV(−) were adjusted by linear regression for sex and age; HIV subtype comparisons were adjusted for nadir CD4 and plasma viral load suppression. Results: Levels of NEP and ratios in CSF were comparable for HIV-1C and B subtypes. The ratio of serum NEP/Aβ-40 was lower for HIV1-C than HIV1-B ( P = 0.032). The CSF/serum index of NEP/Aβ-40, NEP/Aβ-42, and NEP/Aβ-total were lower for HIV1-B than HIV1-C ( P = 0.008, 0.005, and 0.017, respectively), corroborating the findings for serum. CSF NEP was comparable for HIV+, HIV−, and AD. Conclusion: There was impact of HIV subtype on NEP. The ratio of NEP/Aβ-40 on serum was lower on HIV1-C than HIV1-B. These results are consistent with the results of CSF Aβ-42 levels decreased in HIV1-C compared with HIV1-B, suggesting higher amyloid β deposit on HIV1-C than HIV1-B." @default.
- W2790394987 created "2018-03-29" @default.
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- W2790394987 date "2018-06-01" @default.
- W2790394987 modified "2023-10-16" @default.
- W2790394987 title "Neprilysin in the Cerebrospinal Fluid and Serum of Patients Infected With HIV1-Subtypes C and B" @default.
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- W2790394987 doi "https://doi.org/10.1097/qai.0000000000001666" @default.
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