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Ultrasound-Confirmed, Age-Specific Uterine Leiomyoma Incidence in a Cohort of Black Individuals. Obstet Gynecol 2022; 140:1042-1048. [PMID: 36357982 PMCID: PMC9712257 DOI: 10.1097/aog.0000000000004997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 08/18/2022] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To estimate the age-specific incidence of uterine leiomyomas identified by transvaginal ultrasonography among participants in SELF (Study of Environment, Lifestyle & Fibroids). METHODS SELF is a longitudinal cohort study of individuals aged 23-35 years who self-identified as Black. Participants were recruited from the Detroit, Michigan, area and underwent up to five transvaginal ultrasonograms over a period of up to 10 years to identify uterine leiomyomas. We randomly imputed incidence dates between the last ultrasonogram date in which no leiomyomas were detected and the date of the ultrasonogram in which leiomyomas were first detected. We used Poisson regression to estimate age-specific incidence rates per 1,000 person-years with 95% CIs. The rates were then compared with those of the BWHS (Black Women's Health Study) and the NHS II (Nurses' Health Study II)-two prospective cohort studies based on self-reported leiomyoma diagnoses. RESULTS In this cohort, 1,693 participants completed a baseline interview and ultrasonogram. We excluded 385 (22.7%) participants with leiomyomas detected during baseline, seven participants whose ultrasonograms were poor quality, and 60 participants with only a baseline ultrasonogram. Among the remaining 1,241 participants, the overall incidence rate was 53.9 cases per 1,000 person-years (95% CI 48.6-59.6). The age-specific incidence rates (cases/1,000 person-years) were: younger than 30 years: 49.7, 95% CI 40.9-59.9; 30-34 years: 55.2, 95% CI 47.0-64.3; and 35-39 years: 58.2, 95% CI 47.3-70.9. Among participants aged younger than 30 years, the incidence rate in SELF was more than double that of the BWHS or the NHS II. CONCLUSION The high age-specific leiomyoma incidence rates in this prospective ultrasound-based study indicate that many young Black individuals with leiomyomas go undiagnosed. These data suggest that individuals could benefit from ultrasound screening when they experience symptoms compatible with leiomyomas (eg, heavy menstrual bleeding, anemia, pelvic pain).
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Association of citrulline concentration at birth with lower respiratory tract infection in infancy: Findings from a multi-site birth cohort study. Front Pediatr 2022; 10:979777. [PMID: 36324820 PMCID: PMC9618869 DOI: 10.3389/fped.2022.979777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 09/28/2022] [Indexed: 11/13/2022] Open
Abstract
Assessing the association of the newborn metabolic state with severity of subsequent respiratory tract infection may provide important insights on infection pathogenesis. In this multi-site birth cohort study, we identified newborn metabolites associated with lower respiratory tract infection (LRTI) in the first year of life in a discovery cohort and assessed for replication in two independent cohorts. Increased citrulline concentration was associated with decreased odds of LRTI (discovery cohort: aOR 0.83 [95% CI 0.70-0.99], p = 0.04; replication cohorts: aOR 0.58 [95% CI 0.28-1.22], p = 0.15). While our findings require further replication and investigation of mechanisms of action, they identify a novel target for LRTI prevention and treatment.
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Identifying factors affecting diabetes education program participation within a metro Detroit integrated health system. Prev Med Rep 2021; 24:101646. [PMID: 34976695 PMCID: PMC8683990 DOI: 10.1016/j.pmedr.2021.101646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 11/14/2021] [Accepted: 11/17/2021] [Indexed: 11/29/2022] Open
Abstract
Classification and regression tree analysis identified patterns in participation. White people, >43 years old, with A1c > 8.9 and with Medicaid had lowest contact. People with Medicaid, <48 years, and A1C > 8.1 had lowest intake session attendance. Older males with A1c ≤ 8.3% had the highest rate (66.0%) of completing their plan.
Diabetes self-management education and support (DSMES) can help people achieve optimal disease control, yet these services often remain underutilized. People referred to these programs by their provider can become disengaged in the program at several key steps. This study applies Classification and Regression Tree analysis to 3796 people with diabetes at a single health system based in the Detroit metropolitan area who were referred for DSMES provided by the health system to determine demographic patterns of those who were successfully contacted to schedule program intake appointments, those who did not attend their intake appointment, and those who began but did not complete their personalized DSMES program. White people > 43 years of age, those with a prior A1C value > 8.9 and those with Medicaid insurance had the highest rate of not being successfully contacted for their intake appointment. Those who did not attend their intake appointment tended to have Medicaid insurance, be younger than 48 years, and have A1C > 8.1. Within the Medicare or private insurance groups, those who did not attend were more likely to be female, of Black race and not partnered. Older males with a lower A1C (≤8.3%) had the lowest rate (34.0%) of failing to complete their DSMES plan. The data showed that almost half of those referred were not successfully contacted. The overall low completion rate of 13.2% confirms the need to examine factors predictive of participation and completion. This study highlights process improvement changes to improve personalization of outreach and engagement.
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US Childhood Asthma Incidence Rate Patterns From the ECHO Consortium to Identify High-risk Groups for Primary Prevention. JAMA Pediatr 2021; 175:919-927. [PMID: 33999100 PMCID: PMC8129904 DOI: 10.1001/jamapediatrics.2021.0667] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 02/19/2021] [Indexed: 12/17/2022]
Abstract
Importance Asthma is the leading chronic illness in US children, but most descriptive epidemiological data are focused on prevalence. Objective To evaluate childhood asthma incidence rates across the nation by core demographic strata and parental history of asthma. Design, Setting, and Participants For this cohort study, a distributed meta-analysis was conducted within the Environmental Influences on Child Health Outcomes (ECHO) consortium for data collected from May 1, 1980, through March 31, 2018. Birth cohort data of children from 34 gestational weeks of age or older to 18 years of age from 31 cohorts in the ECHO consortium were included. Data were analyzed from June 14, 2018, to February 18, 2020. Exposures Caregiver report of physician-diagnosed asthma with age of diagnosis. Main Outcome and Measures Asthma incidence survival tables generated by each cohort were combined for each year of age using the Kaplan-Meier method. Age-specific incidence rates for each stratum and asthma incidence rate ratios by parental family history (FH), sex, and race/ethnicity were calculated. Results Of the 11 404 children (mean [SD] age, 10.0 [0.7] years; 5836 boys [51%]; 5909 White children [53%]) included in the primary analysis, 7326 children (64%) had no FH of asthma, 4078 (36%) had an FH of asthma, and 2494 (23%) were non-Hispanic Black children. Children with an FH had a nearly 2-fold higher incidence rate through the fourth year of life (incidence rate ratio [IRR], 1.94; 95% CI, 1.76-2.16) after which the rates converged with the non-FH group. Regardless of FH, asthma incidence rates among non-Hispanic Black children were markedly higher than those of non-Hispanic White children during the preschool years (IRR, 1.58; 95% CI, 1.31-1.86) with no FH at age 4 years and became lower than that of White children after age 9 to 10 years (IRR, 0.67; 95% CI, 0.50-0.89) with no FH. The rates for boys declined with age, whereas rates among girls were relatively steady across all ages, particularly among those without an FH of asthma. Conclusions and Relevance Analysis of these diverse birth cohorts suggests that asthma FH, as well as race/ethnicity and sex, were all associated with childhood asthma incidence rates. Black children had much higher incidences rates but only during the preschool years, irrespective of FH. To prevent asthma among children with an FH of asthma or among Black infants, results suggest that interventions should be developed to target early life.
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Chromosome 17q12-21 Variants Are Associated with Multiple Wheezing Phenotypes in Childhood. Am J Respir Crit Care Med 2021; 203:864-870. [PMID: 33535024 DOI: 10.1164/rccm.202003-0820oc] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Rationale: Birth cohort studies have identified several temporal patterns of wheezing, only some of which are associated with asthma. Whether 17q12-21 genetic variants, which are closely associated with asthma, are also associated with childhood wheezing phenotypes remains poorly explored.Objectives: To determine whether wheezing phenotypes, defined by latent class analysis (LCA), are associated with nine 17q12-21 SNPs and if so, whether these relationships differ by race/ancestry.Methods: Data from seven U.S. birth cohorts (n = 3,786) from the CREW (Children's Respiratory Research and Environment Workgroup) were harmonized to represent whether subjects wheezed in each year of life from birth until age 11 years. LCA was then performed to identify wheeze phenotypes. Genetic associations between SNPs and wheeze phenotypes were assessed separately in European American (EA) (n = 1,308) and, for the first time, in African American (AA) (n = 620) children.Measurements and Main Results: The LCA best supported four latent classes of wheeze: infrequent, transient, late-onset, and persistent. Odds of belonging to any of the three wheezing classes (vs. infrequent) increased with the risk alleles for multiple SNPs in EA children. Only one SNP, rs2305480, showed increased odds of belonging to any wheezing class in both AA and EA children.Conclusions: These results indicate that 17q12-21 is a "wheezing locus," and this association may reflect an early life susceptibility to respiratory viruses common to all wheezing children. Which children will have their symptoms remit or reoccur during childhood may be independent of the influence of rs2305480.
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Participant-level characteristics differ by recruitment setting when evaluating a behavioral intervention targeting adolescents with asthma. J Asthma 2021; 58:370-377. [PMID: 31702415 PMCID: PMC10726210 DOI: 10.1080/02770903.2019.1690661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 10/03/2019] [Accepted: 11/05/2019] [Indexed: 01/31/2023]
Abstract
OBJECTIVE The recruitment setting plays a key role in the evaluation of behavioral interventions. We evaluated a behavioral intervention for urban adolescents with asthma in three randomized trials conducted separately in three different settings over the course of 8 years. We hypothesized that characteristics of trial participants recruited from the ED and clinic settings would be significantly different from that of youth participating in the school-based trials. The intervention evaluated was Puff City, a web-based program that uses tailoring to improve asthma management behaviors. METHODS The present analysis includes youth aged 13-19 years who reported a physician diagnosis of asthma and symptoms at trial baseline. In the three trials, all participants were randomized post-baseline to a web-based, tailored intervention (treatment) or generic web-based asthma education (control). RESULTS Compared to school-based trial participants, ED participants had significantly more acute-care visits for asthma (p < 0.001) and more caregiver depression (p < 0.001). Clinic-based participants were more likely to have computer/ internet access than participants from the school-based trial (p < 0.001). Both ED and clinic participants were more likely to report controller medication (p's < 0.001) and higher teen emotional support (p's < 0.01) when compared to the schools, but were less likely to report Medicaid (p's < 0.014) and exposure to environmental tobacco smoke (p < 0.001). CONCLUSION Compared to participants in the school-based trials, participants recruited from ED and clinic settings differed significantly in terms of healthcare use, as well as psychosocial and sociodemographic factors. These factors can inform intervention content, and may impact external validity of behavioral interventions for asthma.
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Association Of Dog Exposure and Early-Life IgE Production In The Microbes, Asthma, Allergy and Pets (MAAP) Birth Cohort. J Allergy Clin Immunol 2021. [DOI: 10.1016/j.jaci.2020.12.579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Unconjugated bilirubin is associated with protection from early-life wheeze and childhood asthma. J Allergy Clin Immunol 2021; 148:128-138. [PMID: 33434532 DOI: 10.1016/j.jaci.2020.12.639] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 11/11/2020] [Accepted: 12/02/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Wheeze and allergic sensitization are the strongest early-life predictors of childhood asthma development; the molecular origins of these early-life phenotypes are poorly understood. OBJECTIVES We sought to identify metabolites associated with early-life wheeze, allergic sensitization, and childhood asthma. METHODS We conducted a nested case-control study using Environmental influences on Child Health Outcomes Program cohorts for discovery and independent replication. Wheeze and allergic sensitization were defined by number of wheeze episodes and positive specific IgE at age 1 year, respectively. Asthma was defined as physician diagnosis of asthma at age 5 or 6 years. We used untargeted metabolomics, controlling for observed and latent confounding factors, to assess associations between the plasma metabolome and early-life wheeze, allergy, and childhood asthma. RESULTS Eighteen plasma metabolites were associated with first-year wheeze in the discovery cohort (n = 338). Z,Z unconjugated bilirubin (UCB) and its related metabolites exhibited a dose-response relationship with wheeze frequency; UCB levels were 13% (β = 0.87; 95% CI, 0.74-1.02) and 22% (β = 0.78; 95% CI, 0.68-0.91) lower in children with 1 to 3 and 4+ wheeze episodes compared with those who never wheezed, respectively. UCB levels were also associated with childhood asthma (β = 0.82; 95% CI, 0.68-0.98). Similar trends were observed in 2 independent cohorts. UCB was significantly negatively correlated with eicosanoid- and oxidative stress-related metabolites. There were no significant associations between metabolites and allergic sensitization. CONCLUSIONS We identified a novel inverse, dose-dependent association between UCB and recurrent wheeze and childhood asthma. Inflammatory lipid mediators and oxidative stress byproducts inversely correlated with UCB, suggesting that UCB modulates pathways critical to the development of early-life recurrent wheeze and childhood asthma.
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P050 PRENATAL PET EXPOSURE AND TOTAL SERUM IGE TRAJECTORY AT 10 YEARS OF AGE. Ann Allergy Asthma Immunol 2020. [DOI: 10.1016/j.anai.2020.08.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Maternal and cord blood vitamin D level and the infant gut microbiota in a birth cohort study. Matern Health Neonatol Perinatol 2020; 6:5. [PMID: 33101701 PMCID: PMC7576815 DOI: 10.1186/s40748-020-00119-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 10/08/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Mounting evidence suggests both vitamin D and the early life gut microbiome influence childhood health outcomes. However, little is known about how these two important exposures are related. We aimed to examine associations between plasma 25-hydroxyvitamin D (25[OH]D) levels during pregnancy or at delivery (cord blood) and infant gut microbiota. METHODS Maternal and cord blood 25[OH]D levels were assessed in a sample of pregnant women. Compositional analyses adjusted for race were run on the gut microbiota of their offspring at 1 and 6 months of age. RESULTS Mean prenatal 25(OH)D level was 25.04 ± 11.62 ng/mL and mean cord blood 25(OH)D level was 10.88 ± 6.77 ng/mL. Increasing prenatal 25(OH)D level was significantly associated with decreased richness (p = 0.028) and diversity (p = 0.012) of the gut microbiota at 1 month of age. Both prenatal and cord 25(OH)D were significantly associated with 1 month microbiota composition. A total of 6 operational taxonomic units (OTUs) were significantly associated with prenatal 25(OH)D level (four positively and two negatively) while 11 OTUs were significantly associated with cord 25(OH)D (10 positively and one negatively). Of these, OTU 93 (Acinetobacter) and OTU 210 (Corynebacterium), were consistently positively associated with maternal and cord 25(OH)D; OTU 64 (Ruminococcus gnavus) was positively associated with prenatal 25(OH)D but negatively associated with cord 25(OH)D. CONCLUSIONS Prenatal maternal and cord blood 25(OH)D levels are associated with the early life gut microbiota. Future studies are needed to understand how vitamin D and the microbiome may interact to influence child health.
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The early life trajectory of infant gut microbiota and atopic asthma at 10 years-of-age in a US birth cohort. World Allergy Organ J 2020. [DOI: 10.1016/j.waojou.2020.100385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Association between asthma symptom scores and perceived stress and trait anxiety in adolescents with asthma. Allergy Asthma Proc 2020; 41:210-217. [PMID: 32375966 DOI: 10.2500/aap.2020.41.200017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background: Emotional disorders, including depression and anxiety, are more prevalent in individuals with asthma than in the general population and are associated with poor asthma outcomes. Identification of patients with increased levels of stress and anxiety may be helpful when treating asthma and during asthma counseling. Objective: To further characterize the relationship between asthma symptoms and perceived stress and trait anxiety in an adolescent population. Methods: Adolescents (N = 335) ages 14-17 years were recruited to examine the effect of stress on health measures. They were included in the present analysis if they reported current asthma, defined as self-reported clinician-diagnosed asthma plus one or more episodes of asthma in the past year. Asthma symptoms were assessed on a 7-point scale by using a standardized questionnaire that targets nocturnal awakening due to asthma, symptoms on awakening, activity limitation, shortness of breath, time spent wheezing, and short-acting bronchodilator use. Stress was measured by using the Perceived Stress Scale (PSS), and trait anxiety was measured by using the State-Trait Anxiety Inventory. Linear regression was used to associate asthma symptoms with PSS and trait anxiety. Results: Thirty-eight adolescents (11.3%), with mean ± standard deviation age 16.7 ± 0.9 years, reported current asthma. Four of the six asthma symptom assessments had significant associations with PSS: symptoms on awakening (β = 4.82, p < 0.001), nocturnal awakening due to asthma (β = 4.47, p < 0.001), activity limitation (β = 2.78, p = 0.005), and shortness of breath (β = 1.73, p = 0.014). These associations remained significant after adjusting for gender, race, and the body mass index percentile. Trait anxiety had significant associations with nocturnal awakening (β = 9.28, p = 0.002) and symptoms on awakening (β = 8.74, p = 0.002). Associations remained significant after adjusting for gender, race, and body mass index percentile. Conclusion: Asthma symptom severity is associated with increased perceived stress and trait anxiety. Adolescents with asthma may represent a population that is particularly vulnerable to perceived stress and anxiety, which highlights the importance of considering these factors in asthma counseling.
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Prenatal Indoor Dog Exposure and Early Life Gut Microbiota in the Microbes, Asthma, Allergy and Pets Birth Cohort. J Allergy Clin Immunol 2020. [DOI: 10.1016/j.jaci.2019.12.325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Racial disparities in allergic outcomes persist to age 10 years in black and white children. Ann Allergy Asthma Immunol 2020; 124:342-349. [PMID: 31945477 DOI: 10.1016/j.anai.2020.01.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/06/2019] [Accepted: 01/02/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Previous analyses in the WHEALS birth cohort demonstrated that black children are more likely to experience allergic outcomes than white children by age 2 years. The results could not be explained by a host of variables. OBJECTIVE Assess whether racial disparities persisted to age 10 years and determine whether any differences could be explained by a panel of variables related to early life exposures in WHEALS. METHODS At age 10 years, WHEALS children (n = 481) completed skin prick testing, spirometry and methacholine challenge, and a physician examination for eczema and asthma. Allergen-specific immunoglobulin Es (sIgE) and total IgE were measured. Inverse probability weighting with logistic and linear regression models was used to assess associations between race (black or white) and the outcomes. RESULTS Black children fared worse than white children with respect to each outcome. Black children were more likely to have eczema, asthma, sensitization (≥1 sIgE ≥ 0.35 IU/L) and at least 1 positive skin pick test; however, some variability was present in the magnitudes of association within subgroups defined by delivery mode, sex of the child, prenatal indoor dog exposure, and firstborn status. In some subgroups, black children were also more likely to have higher total IgE and worse pulmonary function test measures (PC 20 ≤ 25 mg/mL, % predicted forced vital capacity [FVC], forced expiratory volume in 1 second [FEV1]/FVC, forced expiratory flow from 25% to 75% of vital capacity [FEF25-75]). Confounding did not explain these differences. CONCLUSION Racial differences persisted in this cohort through age 10 years. Future studies should include potentially important, but rarely studied factors such as segregation and structural racism, because these factors could explain the observed racial differences.
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Asthma as an outcome: Exploring multiple definitions of asthma across birth cohorts in the Environmental influences on Child Health Outcomes Children's Respiratory and Environmental Workgroup. J Allergy Clin Immunol 2019; 144:866-869.e4. [PMID: 31163174 DOI: 10.1016/j.jaci.2019.05.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/17/2019] [Accepted: 05/24/2019] [Indexed: 11/17/2022]
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Exploring latent classes to identify prenatal and early-life sources of racial disparities in allergic disease. Ann Allergy Asthma Immunol 2019; 122:650-652.e1. [PMID: 30953785 DOI: 10.1016/j.anai.2019.03.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/20/2019] [Accepted: 03/29/2019] [Indexed: 11/26/2022]
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Breast-feeding and delivery mode modify the association between maternal atopy and childhood allergic outcomes. J Allergy Clin Immunol 2018; 142:2002-2004.e2. [PMID: 30170122 DOI: 10.1016/j.jaci.2018.08.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 06/21/2018] [Accepted: 08/20/2018] [Indexed: 12/23/2022]
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Dog introduction alters the home dust microbiota. INDOOR AIR 2018; 28:539-547. [PMID: 29468742 PMCID: PMC6003855 DOI: 10.1111/ina.12456] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 02/13/2018] [Indexed: 05/13/2023]
Abstract
Research has largely reported that dog exposure is associated with reduced allergic disease risk. Responsible mechanism(s) are not understood. The goal was to investigate whether introducing a dog into the home changes the home dust microbiota. Families without dogs or cats planning to adopt a dog and those who were not were recruited. Dust samples were collected from the homes at recruitment and 12 months later. Microbiota composition and taxa (V4 region of the 16S rRNA gene) were compared between homes that did and did not adopt a dog. A total of 91 dust samples from 54 families (27 each, dog and no dog; 17 dog and 20 no dog homes with paired samples) were analyzed. A significant dog effect was seen across time in both unweighted UniFrac and Canberra metrics (both P = .008), indicating dog introduction may result in rapid establishment of rarer and phylogenetically related taxa. A significant dog-time interaction was seen in both weighted UniFrac (P < .001) and Bray-Curtis (P = .002) metrics, suggesting that while there may not initially be large relative abundance shifts following dog introduction, differences can be seen within a year. Therefore, dog introduction into the home has both immediate effects and effects that emerge over time.
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Serum cholesterol trajectories in the 10 years prior to lymphoma diagnosis. Cancer Causes Control 2017; 29:143-156. [PMID: 29192350 DOI: 10.1007/s10552-017-0987-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 11/21/2017] [Indexed: 12/13/2022]
Abstract
PURPOSE Many studies suggest a role for cholesterol in cancer development. Serum cholesterol levels have been observed to be low in newly diagnosed lymphoma cases. The objective of these analyses was to examine the time-varying relationship of cholesterol with lymphomagenesis in the 10 years prior to diagnosis by lymphoma subtype. METHODS Participants were selected from the combined membership of six National Cancer Institute-funded Cancer Research Network health plans from 1998 to 2008, excluding members with human immunodeficiency virus, cancer (except lymphoma), or organ transplants. Incident lymphoma cases within this population were ascertained and matched with up to five controls. Total serum cholesterol, high-density lipoprotein, and low-density lipoprotein were collected from plan databases. Multilevel, multivariable longitudinal models were fit after choosing the best polynomial order by deviance statistics for selected lymphoma histotypes to examine pre-diagnosis cholesterol trajectories: Hodgkin lymphoma (n = 519) and all non-Hodgkin lymphomas combined (n = 12,635) as well as six subtypes of the latter. RESULTS For all categories, lymphoma cases had statistically significantly lower estimated total serum cholesterol, high-density lipoprotein, and low-density lipoprotein levels than controls in the years prior to diagnosis/index date. Between-group differences were most pronounced 3-4 years prior to diagnosis, when cases' cholesterol levels declined steeply. CONCLUSIONS This analysis is the first to examine changes in serum cholesterol for a decade prior to lymphoma diagnosis. A drop in cholesterol levels was evident several years before diagnosis. Our results suggest that cholesterol-related pathways have an important relationship with lymphomagenesis and low cholesterol could be a preclinical lymphoma marker.
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OR112 Effect of prenatal dog exposure on eczema development in early and late childhood. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Burden of higher lead exposure in African-Americans starts in utero and persists into childhood. ENVIRONMENT INTERNATIONAL 2017; 108:221-227. [PMID: 28886415 PMCID: PMC5623116 DOI: 10.1016/j.envint.2017.08.021] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 08/07/2017] [Accepted: 08/30/2017] [Indexed: 05/18/2023]
Abstract
BACKGROUND Recent public health lead crises in urban areas emphasize the need to better understand exposure to environmental toxicants, particularly in higher risk groups. Although African-American children have the highest prevalence of elevated blood lead levels in the United States, little is known about when this trajectory of disproportionate burden of lead exposure first emerges. OBJECTIVES Using tooth-matrix biomarkers that directly measure fetal and early childhood metal levels, the primary goal of this study was to determine if there were racial disparities in lead levels during fetal development and early childhood. Manganese, an essential nutrient that modifies the neurotoxic effects of lead, was also measured. METHODS Pregnant women served by the Henry Ford Health System and living in a predefined geographic area in and around Detroit, Michigan, were recruited during the second trimester or later into the Wayne County Health, Environment, Allergy and Asthma Longitudinal Study (WHEALS), a population-based birth cohort. Offspring born between September 2003 and December 2007 were studied in childhood. Child race was parent-reported. Lead and manganese during the second and third trimesters, early postnatal life (birth through age 1year) and early childhood (age 1 through time of tooth shedding, which ranges from 6 to 12years) were measured via high-resolution microspatial mapping of dentin growth rings, a validated biomarker for prenatal and childhood metal exposure. RESULTS African-American children (N=71) had 2.2 times higher lead levels in the second and third trimesters (both p<0.001) and 1.9 times higher lead levels postnatally in the first year of life (p=0.003) compared to white children (N=51). Lead levels in African-American children were also higher during childhood, but this effect was only marginally significant (p=0.066) and was attenuated after covariate adjustment. Additionally, we observed that African-American children had lower tooth‑manganese levels during the third trimester (p=0.063) and postnatally (p=0.043), however these differences were attenuated after covariate adjustment. CONCLUSION The disproportionate burden of lead exposure is vertically transmitted (i.e., mother-to-child) to African-American children before they are born and persists into early childhood. Our results suggest that testing women for lead during pregnancy (or in pre-conception planning), may be needed to identify the risk to their future offspring, particularly for African-American women.
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The associations between eczema and food and inhalant allergen-specific IgE vary between black and white children. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2017; 6:292-294.e2. [PMID: 28958743 DOI: 10.1016/j.jaip.2017.07.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 07/11/2017] [Accepted: 07/25/2017] [Indexed: 12/26/2022]
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Allergic sensitization in American children of Middle Eastern ethnicity at age 2. Ann Allergy Asthma Immunol 2017; 119:464-466. [PMID: 28941706 DOI: 10.1016/j.anai.2017.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 07/28/2017] [Accepted: 08/15/2017] [Indexed: 11/30/2022]
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An Analysis of Potential Associations Between Delivery Mode and Dog-Keeping to Basophil FcER1 and Activation Marker Expression During Infancy. J Allergy Clin Immunol 2017. [DOI: 10.1016/j.jaci.2016.12.549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Design of a Case Management Approach to Enhance Cancer Screening Trial Retention Among Older African American Men. J Aging Health 2016; 16:39S-57S. [PMID: 15448286 DOI: 10.1177/0898264304268148] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Purpose:The purpose of this study was to enhance retention among African American men enrolled in a cancer screening trial. Design and Methods:A telephonebased, randomized trial design was used. The intervention group included 352 African American men aged 55+. Case managers contacted participants at least monthly and provided information and referral services to participants and their relatives. Results:The mean age of participants was 65.7 years. A total of 14,978 calls were made resulting in 780 referrals. The 10 most frequent referrals were for scheduling medical appointments, health information, insurance information, legal aid, transportation, cancer screening information, information technology/computer information, employment, housekeeping/chore services, and food programs. Conclusions:The case managers served as links between participants and community-based resources. The types of referrals made could be associated with the age-related needs of the participants.
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Subgroup differences in the associations between dog exposure during the first year of life and early life allergic outcomes. Clin Exp Allergy 2016; 47:97-105. [PMID: 27562398 DOI: 10.1111/cea.12804] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 08/12/2016] [Accepted: 08/15/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND The effect of dog exposure on the risk of children developing allergic disease remains controversial. Many analyses have not considered that associations may vary within population subgroups. OBJECTIVE To examine whether associations between living with a dog in the first year of life and allergic outcomes vary within subgroups selected a priori (race, gender and delivery mode). METHODS Black (n = 496) and White (n = 196) children enrolled in the WHEALS birth cohort study had a clinical examination at age 2 years to assess eczema and allergen-specific IgE (sIgE) and perform skin prick testing (SPT). Whether the child lived with an indoor dog in the first year of life was assessed through interview, as was doctor diagnosis of asthma at ages 3-6 years. RESULTS Living with a dog was associated with decreased odds of having ≥ 1 positive SPT (OR = 0.56, 95% CI: 0.34, 0.91) and having eczema (OR = 0.34, 95% CI: 0.20, 0.60). The association with SPT was stronger in those children born via caesarean section (c-section) vs. vaginally (OR = 0.29, 95% CI: 0.12, 0.74 vs. OR = 0.76, 95% CI: 0.43, 1.37, respectively, interaction P = 0.087) and in those who were firstborn vs. not (OR = 0.27, 95% CI: 0.11, 0.67 vs. OR = 0.82, 95% CI: 0.45, 1.47, respectively, interaction P = 0.044). The association with eczema was stronger in children born vaginally compared with those born via caesarean section (OR = 0.17, 95% CI: 0.06, 0.43 vs. OR = 0.65, 95% CI: 0.31, 1.35, respectively, interaction P = 0.025) and was stronger in Black vs. White children (OR = 0.30, 95% CI: 0.15, 0.61 vs. OR = 0.78, 95% CI: 0.29, 2.11, respectively, interaction P = 0.12). Dog keeping was not significantly inversely associated with having ≥ 1 elevated sIgE and only approached statistical significance with asthma. CONCLUSIONS AND CLINICAL RELEVANCE Results likely vary between studies due to variability of specific exposure-outcome associations in subgroups defined by other factors as well as the relative distributions of those subgroups. Important allergic disorder associations will be missed without subgroup analyses.
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Abstract
Rates of childhood obesity have risen at the same time rates of high blood lead levels (BLLs) have fallen. Recent studies suggest that higher BLL is inversely associated with body size in older children (ages 3-19 years). No contemporaneous studies have examined if having a detectable BLL is associated with body size in very early childhood. We examined if detectable BLL is associated with body size in early childhood. A total of 299 birth cohort participants completed a study visit at ages 2-3 years with weight and height measurements; prior to this clinic visit, a BLL was drawn as part of routine clinical care. Body mass index (BMI) percentile and Z-score were calculated; children with BMI ≥85th percentile were considered overweight/obese at age of 2 years. Detectable BLL was defined as BLL ≥1 μg/dL. A total of 131 (43.8 %) children had a detectable BLL measured at mean aged 15.4 ± 5.5 months. Mean age at body size assessment was 2.2 ± 0.3 years (53.2 % male, 68.6 % African-American). After adjusting for race, sex, and birth weight, children with a detectable BLL had a 43 % lower risk of BMI ≥85th percentile (P = 0.041) and a 0.35-unit lower BMI Z-score (P = 0.008) compared to children without a detectable BLL. Neither race nor sex modified this association (all interactions P > 0.21). Consistent with recent studies in older children, having a detectable BLL was associated with smaller body size at ages 2-3 years. Additional research on the mechanism of this association is needed but may include mechanisms of appetite suppression via lead.
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Does pet-keeping modify the association of delivery mode with offspring body size? Matern Child Health J 2016; 19:1426-33. [PMID: 25427878 DOI: 10.1007/s10995-014-1649-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Caesarean-section (CS) delivery increases risk of childhood obesity, and is associated with a distinct early-life gut microbiome, which may contribute to obesity. Household pets may alter human gut microbiome composition. We examined if pet-keeping modified the association of CS with obesity at age 2 years in 639 Wayne County Health, Environment, Allergy and Asthma Longitudinal Study birth cohort participants. Pet-keeping was defined as having a dog or cat (indoors ≥1 h/day) at child age 2 years. We used logistic regression to test for an interaction between CS and pet-keeping with obesity (BMI ≥ 95th percentile) at age 2 years, adjusted for maternal obesity. A total of 328 (51.3 %) children were male; 367 (57.4 %) were African American; 228 (35.7 %) were born by CS; and 55 (8.6 %) were obese. After adjusting for maternal obesity, CS-born children had a non-significant (P = 0.25) but elevated 1.4 (95 % CI 0.8, 2.5) higher odds of obesity compared to those born vaginally. There was evidence of effect modification between current pet-keeping and delivery mode with obesity at age 2 years (interaction P = 0.054). Compared to children born vaginally without a pet currently in the home, children born via CS without a pet currently in the home had a statistically significant (P = 0.043) higher odds (odds ratio 2.00; 95 % CI 1.02, 3.93) of being obese at age 2 years. Pets modified the CS-BMI relationship; whether the underlying mechanism is through effects on environmental or gut microbiome requires specific investigation.
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Exploring racial differences in IgE-mediated food allergy in the WHEALS birth cohort. Ann Allergy Asthma Immunol 2016; 116:219-224.e1. [PMID: 26837607 PMCID: PMC4864956 DOI: 10.1016/j.anai.2015.12.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Revised: 12/14/2015] [Accepted: 12/17/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Suspected food allergies are the cause of more than 200,000 visits to the emergency department annually. Racial differences in the prevalence of food allergy have also been reported, but the evidence is less conclusive. Researchers continue to struggle with the identification of food allergy for epidemiologic studies. OBJECTIVE To explore racial differences in IgE-mediated food allergy (IgE-FA) in a birth cohort. METHODS We used a panel of board-certified allergists to systematically identify IgE-FA to egg, milk, or peanut in a multiethnic birth cohort in which patient medical history, patient symptoms, and clinical data were available through 36 months of age. RESULTS Of the 590 infants analyzed, 52.9% were male and 65.8% African American. Sensitization (serum specific IgE >0.35 IU/mL) to the food allergens was significantly higher for African American children compared with non-African American children as has been previously reported. No statistically significant racial/ethnic differences in IgE-FA were observed; however, a higher proportion of African American children were designated as having peanut allergy, and the percentage of African American children with an IgE level greater than 95% predictive decision points for peanut was 1.7% vs 0.5% for non-African American children. With the use of logistic regression, race/ethnicity was not significantly associated with IgE-FA (adjusted odds ratio, 1.12; 95% confidence interval, 0.58-2.17; P = .75) but was associated with sensitization to more than 1 of the food allergens (adjusted odds ratio, 1.80; 95% confidence interval, 1.22-2.65; P = .003). CONCLUSION We did not observe an elevated risk of IgE-FA for African American children, although established differences in sensitization were observed. Racial/ethnic differences in sensitization must be taken into consideration when investigating disparities in asthma and allergy.
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Association Between Asthma Symptom Scores and Increased Perceived Stress and Trait Anxiety in Asthmatic Adolescents. J Allergy Clin Immunol 2016. [DOI: 10.1016/j.jaci.2015.12.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
OBJECTIVE African American children are at higher risk of obesity than White children and African American women are more likely to undergo caesarean-section (CS) delivery than White women. CS is associated with childhood obesity; however, little is known whether this relationship varies by race. We examined if the association of CS with obesity at age 2 years varied by race. DESIGN Longitudinal birth cohort. SETTING Birth cohort conducted in a health care system in metropolitan Detroit, Michigan with follow-up at age 2 years. PARTICIPANTS 639 birth cohort participants; 367 children (57.4%) were born to African American mothers and 230 (36.0%) children were born via CS. MAIN OUTCOME MEASURES Obesity defined as body mass index ≥95th percentile at age 2 years. RESULTS Slightly more children of African American (n=37; 10.1%) than non-African American mothers (n=18; 6.6%) were obese (P=.12). There was evidence of effect modification between race and delivery mode with obesity at age 2 years (interaction P=.020). In children of African American mothers, CS compared to vaginal birth was associated with a significantly higher odds of obesity (aOR=2.35 (95% CI: 1.16, 4.77), P=.017). In contrast, delivery mode was not associated with obesity at age 2 years in children of non-African American mothers (aOR=.47 (95% CI: .13, 1.71), P=.25). CONCLUSIONS There is evidence for a race-specific effect of CS on obesity at age 2 years; potential underlying mechanisms may be racial differences in the developing gut microbiome or in epigenetic programming. Future research is needed to determine if this racial difference persists into later childhood.
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Combined effects of prenatal medication use and delivery type are associated with eczema at age 2 years. Clin Exp Allergy 2015; 45:660-8. [PMID: 25469564 DOI: 10.1111/cea.12467] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 11/21/2014] [Accepted: 11/24/2014] [Indexed: 01/15/2023]
Abstract
BACKGROUND Separately, prenatal antibiotics and Caesarian delivery have been found to be associated with increased risk of allergic diseases. It is not clear whether these factors may modify the effect of each other. OBJECTIVE To assess whether the associations between delivery types and eczema, sensitization and total IgE at age 2 years were modified by maternal use of prenatal medications. METHODS Prenatal charts of women enrolled in the WHEALS birth cohort were reviewed for delivery mode and medications prescribed and administered throughout their entire pregnancy, including systemic antibiotics and vaginally applied antifungal medications. The associations between the delivery mode and select medications and, eczema, sensitization (≥ 1 of 10 allergen-specific IgE ≥ 0.35 IU/mL) and total IgE at age 2 years were assessed. RESULTS There was a lower risk of eczema among vaginally vs. c-section born children (relative risk adjusted for race = aRR = 0.77, 95% CI 0.56, 1.05). Although not statistically significantly different, this association was stronger among the subset of children born vaginally to a mother who did not use systemic antibiotics or vaginal antifungal medications (aRR = 0.69, 95% CI 0.44, 1.08) compared to those born vaginally to mothers who used systemic antibiotics or vaginal antifungals (aRR = 0.81, 95% CI 0.57, 1.14). A protective association between vaginal birth and sensitization (aRR = 0.86, 95% CI 0.72, 1.03) was similar for those children born vaginally to a mother who did not (aRR = 0.87, 95% CI 0.69, 1.10) and who did (RR = 0.85, 95% CI 0.70, 1.04) use systemic antibiotics or vaginal antifungal medications. There were no associations with total IgE. CONCLUSIONS Children born vaginally had lower risk of eczema and sensitization compared with those born via c-section; however, the protective association with eczema may be slightly weakened when mothers took systemic antibiotics or vaginally applied medications during pregnancy.
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Association Between Body Mass Index and Patient-Centered Outcomes After Hysterectomy. THE JOURNAL OF REPRODUCTIVE MEDICINE 2015; 60:392-396. [PMID: 26592064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To assess whether body mass index (BMI) was associated with self-reported pain, well-being, or procedure satisfaction in the 3 months after hysterectomy. STUDY DESIGN Prospective cohort study that recruited women undergoing hysterectomy. Data was collected over 1 year for 245 women. RESULTS BMI was not associated with pain either at baseline or in the 3 months after surgery versus no pain; odds ratio [OR] = 1.0, 95% confidence interval [CI] 0.97-1.03, p = 0.88 for a 1 unit increase in BMI) or being fully satisfied with the procedure (versus not fully satisfied; OR = 1.01, 95% CI 0.97-1.04, p = 0.77 for a 1unit increase in BMI). Similarly, patient's perception of well-being was also not influenced by BMI as reflected in their well-being score (0.98 increase in score, 95% CI 0.95-1.02, p = 0.40, for a 1-unit increase in BMI). CONCLUSION The data from this prospectively studied cohort of women who had undergone hysterectomy suggest that BMI is not associated with self-report of pain, well-being, -or procedure satisfaction in the 3 month after surgery.
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Association between vitamin D levels and allergy-related outcomes vary by race and other factors. J Allergy Clin Immunol 2015; 136:1309-14.e1-4. [PMID: 26078105 DOI: 10.1016/j.jaci.2015.04.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 04/03/2015] [Accepted: 04/08/2015] [Indexed: 01/04/2023]
Abstract
BACKGROUND Allergy-related studies that include biological measurements of vitamin D preceding well-measured outcomes are needed. OBJECTIVE We sought to examine the associations between early-life vitamin D levels and the development of allergy-related outcomes in the racially diverse Wayne County Health, Environment, Allergy, and Asthma Longitudinal Study birth cohort. METHODS 25-Hydroxyvitamin D (25[OH]D) levels were measured in stored blood samples from pregnancy, cord blood, and age 2 years. Logistic regression models were used to calculate odds ratios (ORs) with 95% CIs for a 5 ng/mL increase in 25(OH)D levels for the following outcomes at age 2 years: eczema, skin prick tests (SPTs), increased allergen-specific IgE level (≥ 0.35 IU/mL), and doctor's diagnosis of asthma (3-6 years). RESULTS Prenatal 25(OH)D levels were inversely associated with eczema (OR, 0.85; 95% CI, 0.75-0.96). The association was stronger in white children (white children: OR, 0.79; 95% CI, 0.57-1.09; black children: OR, 0.96; 95% CI, 0.82-1.12), although this was not statistically significant. Cord blood 25(OH)D levels were inversely associated with having 1 or more positive SPT responses and aeroallergen sensitization. Both associations were statistically significant in white children (positive SPT response: OR, 0.50; 95% CI, 0.32-0.80; ≥ 1 aeroallergen sensitization: OR, 0.50; 95% CI, 0.28-0.92) in contrast with black children (positive SPT response: OR, 0.88; 95% CI, 0.68-1.14; ≥ 1 aeroallergen sensitization: OR, 0.85; 95% CI, 0.65-1.11). 25(OH)D levels measured concurrently with outcome assessment were inversely associated with aeroallergen sensitization (OR, 0.79; 95% CI, 0.66-0.96) only among black children (white children: OR, 1.21; 95% CI, 0.87-1.69). CONCLUSIONS Prenatal and cord blood 25(OH)D levels were associated with some allergy-related outcomes, with a general pattern indicating that children with higher 25(OH)D levels tend to have fewer allergy-related outcomes.
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Comparison of asthma prevalence among African American teenage youth attending public high schools in rural Georgia and urban Detroit. J Allergy Clin Immunol 2015; 136:595-600.e3. [PMID: 25825215 DOI: 10.1016/j.jaci.2015.02.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 01/30/2015] [Accepted: 02/04/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND The high prevalence of asthma among urban African American (AA) populations has attracted research attention, whereas the prevalence among rural AA populations is poorly documented. OBJECTIVE We sought to compare the prevalence of asthma among AA youth in rural Georgia and urban Detroit, Michigan. METHODS The prevalence of asthma was compared in population-based samples of 7297 youth attending Detroit public high schools and in 2523 youth attending public high schools in rural Georgia. Current asthma was defined as a physician diagnosis and symptoms in the previous 12 months. Undiagnosed asthma was defined as multiple respiratory symptoms in the previous 12 months without a physician diagnosis. RESULTS In Detroit, 6994 (95.8%) youth were AA compared with 1514 (60.0%) in Georgia. Average population density in high school postal codes was 5628 people/mile(2) in Detroit and 45.1 people/mile(2) in Georgia. The percentages of poverty and of students qualifying for free or reduced lunches were similar in both areas. The prevalence of current diagnosed asthma among AA youth in Detroit and Georgia was similar: 15.0% (95% CI, 14.1-15.8) and 13.7% (95% CI, 12.0-17.1) (P = .22), respectively. The prevalence of undiagnosed asthma in AA youth was 8.0% in Detroit and 7.5% in Georgia (P = .56). Asthma symptoms were reported more frequently among those with diagnosed asthma in Detroit, whereas those with undiagnosed asthma in Georgia reported more symptoms. CONCLUSIONS Among AA youth living in similar socioeconomic circumstances, asthma prevalence is as high in rural Georgia as it is in urban Detroit, suggesting that urban residence is not an asthma risk factor.
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Maternal and Birth Chracterestics Are Associated with Infant Gut Microbial Composition. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Association of the Infant Gastrointestinal Microbiome with Nocturnal Symptoms in Children with Asthma. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Infant Gut Microbial Composition Alters IgE Response to Tetanus Toxoid Immunization. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Factors Associated with Rates of Influenza Vaccination in Allergy and Primary Care Clinics. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Myomectomy to Conserve Fertility: Seven-Year Follow-Up. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2015; 37:46-51. [DOI: 10.1016/s1701-2163(15)30362-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Comparison of indoor allergen levels in urban and suburban Detroit. J Allergy Clin Immunol 2014; 134:1189-90. [PMID: 25439229 DOI: 10.1016/j.jaci.2014.08.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 08/18/2014] [Accepted: 08/22/2014] [Indexed: 11/27/2022]
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BMI and Uterine Size: Are They Associated with Pain, Well-Being or Satisfaction after Robotic Hysterectomy? J Minim Invasive Gynecol 2014. [DOI: 10.1016/j.jmig.2014.08.784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Transforming growth factor beta (TGFβ1) in breast milk and indicators of infant atopy in a birth cohort. Pediatr Allergy Immunol 2014; 25:257-63. [PMID: 24520941 PMCID: PMC3997590 DOI: 10.1111/pai.12205] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/18/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND The infant gut's ability to suppress immunologic reactions to food proteins could be influenced by levels of TGFβ in breast milk. We hypothesized that lower levels of TGFβ(1) in the breast milk (BM) of mothers in the WHEALS birth cohort are associated with atopy at infant age 2-3 yrs. METHODS We used data collected during infancy in addition to the results of skin prick tests (SPT+) and measures of specific IgE >0.35 IU/ml (spIgE) to milk, egg, and peanut at infant age 2-3 years. Infants were classified as food allergic (FA) based on parental report of infant symptoms/diagnoses and information from clinical assessments. RESULTS Data for 304 cohort members were analyzed. Among non-black infants, BM-TGFβ(1) was lower for those classified as FA (vs. no FA) and those SPT+ (vs., SPT-), geometric mean = 1100 pg/ml vs. 1417pg/ml, p = 0.081; and 1100 pg/ml vs. 1415pg/ml, p = 0.064, respectively. Among infants of non-atopic mothers, BM-TGFβ(1) was lower for those with elevated (vs. not elevated) sIgE, geometric mean = 1347 pg/ml vs. 1651 pg/ml, p = 0.047. Using logistic regression, adjusted odds ratios describing the association of BM-TGFβ1 to the presence of atopic indicators in the infant were in the hypothesized direction only for non-black infants of non-atopic mothers: aORs for FA, sIgE and SPT+ were 0.08, 0.34, and 0.26 respectively; p = 0.091, 0.13, and 0.23. CONCLUSION Immune benefit of BM-TGFβ(1) could inform prevention strategies. Evidence of an association appears greatly influenced by infant race and maternal atopy. More research can determine if these relationships represent a modifiable risk factor for the development of food allergy in certain subgroups.
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Using a physician panel to estimate food allergy prevalence in a longitudinal birth cohort. Ann Epidemiol 2014; 24:551-3. [PMID: 24854182 DOI: 10.1016/j.annepidem.2014.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 03/26/2014] [Indexed: 10/25/2022]
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Atopic phenotypes identified with latent class analyses at age 2 years. J Allergy Clin Immunol 2014; 134:722-727.e2. [PMID: 24636082 DOI: 10.1016/j.jaci.2014.01.022] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 01/16/2014] [Accepted: 01/22/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND Atopic sensitization (ie, atopy) is the most commonly reported risk factor for asthma. Recent studies have begun to suggest that atopy, as conventionally defined, might be an umbrella term that obfuscates more specific allergic disease types. OBJECTIVE We sought to determine whether distinct and meaningful atopic phenotypes exist within a racially diverse birth cohort using 10 allergen-specific serum IgE (sIgE) measurements from children aged 2 years. METHODS Using the Wayne County Health, Environment, Allergy and Asthma Longitudinal Study (WHEALS) birth cohort (62% black), we analyzed sIgE data on 10 allergens (Dermatophagoides farinae, dog, cat, timothy grass, ragweed, Alternaria alternata, egg, peanut, milk, and German cockroach) obtained from 594 children at age 2 years. Conventional atopy was defined as at least 1 sIgE level of 0.35 IU/mL or greater. RESULTS A 4-class solution (latent class model) was the best fit. Class types were labeled "low to no sensitization" (76.9% of sample), "highly sensitized" (2.7%), "milk and egg dominated" (15.3%), and "peanut and inhalant(s)" (5.1%). Almost one third (32.2%) of the low to no sensitization group met the criteria for conventional atopy. The highly sensitized group was significantly associated with a doctor's diagnosis of asthma after age 4 years (odds ratio [OR], 5.3; 95% CI, 1.6-17.4), whereas the milk and egg dominated and peanut and inhalant(s) groups were not (ORs of 1.6 [95% CI, 0.8-3.0] and 1.8 [95% CI, 0.6-4.9], respectively). Children of black race were more likely to be in the 3 multisensitized groups (P = .04). CONCLUSION Classification by sIgE patterns defined groups whose membership is more strongly associated with atopic dermatitis, wheeze, and asthma compared with conventional atopy.
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Racial Differences In The Relationship Of Total and Food-Specific IgE To Atopic Dermatitis In Childhood. J Allergy Clin Immunol 2014. [DOI: 10.1016/j.jaci.2013.12.701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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How Common Is The Phenotype Reflected By “The Atopic March”? Results At Two Years Of Age In a General Risk Multi-Racial Birth Cohort. J Allergy Clin Immunol 2014. [DOI: 10.1016/j.jaci.2013.12.633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Association Between Prenatal and Early Life Vitamin D Levels and Allergic Outcome At Age 2 Years. J Allergy Clin Immunol 2014. [DOI: 10.1016/j.jaci.2013.12.694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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