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1.
Arthritis Care Res (Hoboken) ; 73(6): 833-840, 2021 06.
Article in English | MEDLINE | ID: mdl-32170851

ABSTRACT

OBJECTIVE: Exposure to psychosocial stressors may contribute to the onset of systemic lupus erythematosus (SLE) through dysregulation of the adaptive stress response. The present study was undertaken to assess the relationship of childhood physical and sexual abuse to risk of SLE among Black women. METHODS: Using data from the Black Women's Health Study, we followed 36,152 women from 1995 through 2015 with biennial questionnaires. Women reported on exposure to abuse during childhood (up to age 11) in 2005. Self-reported cases of incident SLE were confirmed as meeting the American College of Rheumatology SLE classification criteria by medical record review. Cox proportional hazards regression models were used to estimate hazard ratios (HRs) and 95% confidence intervals (95% CIs) for SLE among women exposed to physical or sexual abuse during childhood, controlling for potential confounders. RESULTS: We confirmed 101 cases of incident SLE and identified patients who had completed questions on child abuse during 670,822 person-years of follow-up. Both physical and sexual abuse during childhood were associated with statistically significant increases in SLE incidence. The HR for SLE associated with ≥2 episodes of severe sexual abuse compared to no abuse was 2.51 (95% CI 1.29-4.85) after adjustment for alcohol consumption, smoking, body mass index, oral contraceptive use, age at menarche, and parental education. The multivariable-adjusted HR for SLE with ≥5 episodes of severe physical abuse was 2.37 (95% CI 1.13-4.99). CONCLUSION: Our results suggest that sexual and physical abuse during childhood increase SLE risk during adulthood among Black women. Research is necessary both to confirm this finding and to understand potential mediating mechanisms.


Subject(s)
Adverse Childhood Experiences/ethnology , Black or African American , Child Abuse/ethnology , Lupus Erythematosus, Systemic/ethnology , Adult , Adverse Childhood Experiences/psychology , Black or African American/psychology , Age Factors , Aged , Child , Child Abuse/psychology , Child Abuse, Sexual/diagnosis , Child Abuse, Sexual/ethnology , Child Abuse, Sexual/psychology , Child, Preschool , Cross-Sectional Studies , Female , Humans , Incidence , Lupus Erythematosus, Systemic/diagnosis , Lupus Erythematosus, Systemic/psychology , Middle Aged , Race Factors , Risk Assessment , Risk Factors , Sex Factors , Surveys and Questionnaires , Time Factors , United States/epidemiology , Young Adult
2.
Arthritis Care Res (Hoboken) ; 71(5): 671-677, 2019 05.
Article in English | MEDLINE | ID: mdl-30091287

ABSTRACT

OBJECTIVE: Systemic lupus erythematosus (SLE) affects black women more frequently than other racial/gender groups. In past studies, largely consisting of white and Asian cohorts, cigarette smoking was associated with increased SLE risk, and moderate alcohol consumption was associated with decreased SLE risk. The aim of this study was to assess associations of smoking and alcohol consumption with the risk of incident SLE among black women, using data from a long-term, prospective, follow-up study. METHODS: The Black Women's Health Study enrolled 59,000 black women in 1995 and collected data on demographics, health status, and medical and lifestyle variables. Follow-up questionnaires that were given every 2 years identified incident disease and updated risk factors. Cases of incident SLE that met the American College of Rheumatology revised criteria for SLE as updated in 1997 were confirmed through medical record review. Cox regression models were used to estimate hazard ratios (HRs) and 95% confidence intervals (95% CI) for associations of cigarette smoking and alcohol intake with incidence of SLE. RESULTS: A total of 127 incident SLE cases from 1995 to 2015 (mean age 43 years at diagnosis) were confirmed. Compared to never smokers, the risk of SLE among ever smokers was elevated, but not significantly (HR 1.45 [95% CI 0.97-2.18]). Risk was similar for current and past smoking and increased nonsignificantly with increasing pack-years. The HR was 0.71 (95% CI 0.45-1.12) for current drinking relative to never drinking, with a HR of 0.43 (95% CI 0.19-0.96) for ≥4 drinks/week. CONCLUSION: Findings from this large study of SLE risk among black women are consistent with previous results from studies in other populations of increased risk of SLE associated with cigarette smoking and decreased risk with moderate alcohol consumption.


Subject(s)
Alcohol Drinking , Lupus Erythematosus, Systemic/epidemiology , Smoking/adverse effects , Adult , Aged , Female , Humans , Incidence , Lupus Erythematosus, Systemic/etiology , Middle Aged , Prospective Studies , United States/epidemiology , Young Adult
3.
Semin Arthritis Rheum ; 48(6): 1030-1034, 2019 06.
Article in English | MEDLINE | ID: mdl-30424973

ABSTRACT

BACKGROUND: Obesity may influence systemic lupus erythematous (SLE) pathogenesis via stimulation of systemic inflammation, but the relationship between obesity and SLE risk is unclear. Past studies have predominantly assessed White women, while Black women have higher prevalence of both obesity and SLE. METHODS: We prospectively assessed the relationship between Body Mass Index (BMI, kg/m2) and incident SLE within the Black Women's Health Study (median age 38 at entry in 1995). Height and weight at age 18 and during follow-up were self-reported. We confirmed incident SLE cases by updated American College of Rheumatology criteria and collected covariates prospectively. Cox proportional hazards regression models, adjusted for potential confounders, estimated hazard ratios (HRs) and 95% confidence intervals (CIs) for categories of updated BMI and risk of SLE, relative to BMI 20-24.9 ("normal" BMI). Secondary analyses investigated BMI at age 18, BMI in 1995 at cohort entry, cumulative updated BMI and "lagged" BMI (≥4 years prior to outcome window to address possible reverse causation). RESULTS: Adult obesity was not related to SLE risk: HR for BMI ≥30 ("obesity") relative to normal BMI at ≥4 years prior to SLE diagnosis was 0.90 (95% CI 0.53-1.54). However, obesity at age 18 was associated with increased risk: HR 2.38 (95% CI 1.26-4.51) for ≥30 vs. normal BMI. CONCLUSIONS: Among these Black women, obesity as a teenager was associated with increased SLE risk in adulthood. Further studies are necessary to understand the biologic mechanisms and windows of exposure for the relationship of obesity to SLE pathogenesis.


Subject(s)
Lupus Erythematosus, Systemic/epidemiology , Obesity/epidemiology , Adult , Black or African American , Comorbidity , Female , Humans , Incidence , Middle Aged , Prevalence , Prospective Studies , Risk Factors
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