African Mitochondrial DNA Haplogroup L2 Is Associated with Slower Decline of β-cell Function and Lower Incidence of Diabetes Mellitus in Non-Hispanic, Black Women Living with Human Immunodeficiency Virus

  • Jing Sun
  • , Todd T. Brown
  • , Weiqun Tong
  • , David Samuels
  • , Phyllis Tien
  • , Brahim Aissani
  • , Bradley Aouizerat
  • , Maria Villacres
  • , Mark H. Kuniholm
  • , Deborah Gustafson
  • , Katherine Michel
  • , Mardge Cohen
  • , Michael Schneider
  • , Adaora A. Adimora
  • , Mohammed K. Ali
  • , Hector Bolivar
  • , Todd Hulgan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

BACKGROUND: Susceptibility to metabolic diseases may be influenced by mitochondrial genetic variability among people living with human immunodeficiency virus (HIV; PLWH), but remains unexplored in populations with African ancestry. We investigated the association between mitochondrial DNA (mtDNA) haplogroups and the homeostatic model assessments of β-cell function (HOMA-B) and insulin resistance (HOMA-IR), as well as incident diabetes mellitus (DM), among Black women living with or at risk for HIV.

METHODS: Women without DM who had fasting glucose (FG) and insulin (FI) data for ≥2 visits were included. Haplogroups were inferred from genotyping data using HaploGrep. HOMA-B and HOMA-IR were calculated using FG and FI data. Incident DM was defined by a combination of FG ≥ 126 mg/dL, the use of DM medication, a DM diagnosis, or hemoglobin A1c ≥ 6.5%. We compared HOMA-B, HOMA-IR, and incident DM by haplogroups and assessed the associations between HOMA-B and HOMA-IR and DM by haplogroup.

RESULTS: Of 1288 women (933 living with HIV and 355 living without HIV), PLWH had higher initial HOMA-B and HOMA-IR than people living without HIV. PLWH with haplogroup L2 had a slower decline in HOMA-B per year (Pinteraction = .02) and a lower risk of incident DM (hazard ratio [HR], 0.51; 95% confidence interval [CI], .32-.82) than PLWH with other haplogroups after adjustments for age, body mass index, combination antiretroviral therapy use, CD4 cell counts, and HIV RNA. The impact of HOMA-IR on incident DM was less significant in those with haplogroup L2, compared to non-L2 (HR, 1.28 [95% CI, .70-2.38] vs 4.13 [95% CI, 3.28-5.22], respectively; Pinteraction < .01), among PLWH.

CONCLUSIONS: Mitochondrial genetic variation is associated with β-cell functions and incident DM in non-Hispanic, Black women with HIV and alters the relationship between insulin resistance and DM.

Original languageEnglish (US)
Pages (from-to)E218-E225
JournalClinical Infectious Diseases
Volume71
Issue number8
DOIs
StatePublished - Nov 5 2020
Externally publishedYes

Keywords

  • aging
  • diabetes mellitus
  • HIV
  • mitochondrial genetics

PubMed: MeSH publication types

  • Journal Article
  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

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