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1.
J Subst Use Addict Treat ; 155: 208985, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-36822270

RESUMEN

INTRODUCTION: Black people are disproportionately burdened by tobacco-related diseases and are less successful at cigarette cessation with current treatments. We know little about the effectiveness of e-cigarettes as a smoking cessation method compared to currently approved methods in Black adults who smoke. Many Black adults report experiencing racial discrimination in health care, but if discrimination is related to utilization of smoking cessation aids including e-cigarettes and success with smoking cessation in this population is unclear. Therefore, this exploratory study aimed to understand how negative experiences and racial discrimination in health care influence use of e-cigarettes for cigarette cessation and success with cigarette cessation among Black adults. METHODS: The study interviewed 201 Black adults who used cigarettes and tried to quit in their lifetime from the Family and Community Health Study in 2016. The study asked if they had tried and successfully quit cigarettes with e-cigarettes vs. other methods (support groups, medications, nicotine replacement therapies, call-in help lines, cold turkey [quit on their own], counseling) and asked about their negative experiences and racial discrimination in health care. We performed separate logistic regressions that evaluated the association of negative experiences and racial discrimination in health care with 1) use of e-cigarettes for cigarette cessation vs. other quitting methods and 2) success with cigarette cessation using any method among Black adults while controlling for age, sex, socioeconomic status, health insurance status, and age of onset of cigarette use. RESULTS: More reported negative experiences and racial discrimination in health care were associated with ever trying to quit with e-cigarettes compared to other methods (OR:1.75, 95 % CI [1.05-2.91]), but negative experiences and racial discrimination in health care were not associated with cigarette quitting success. Interestingly, trying e-cigarettes was associated with being less successful at quitting compared to using other methods to quit smoking (OR: 0.40, 95 % CI [0.20, 0.81]). CONCLUSIONS: These results suggest that educating health care professionals that anticipated discrimination in health care settings may be driving Black adults who smoke to engage in non-evidence-based smoking cessation practices, such as e-cigarettes instead of those that are evidence-based, and may be more effective in this population.


Asunto(s)
Sistemas Electrónicos de Liberación de Nicotina , Racismo , Cese del Hábito de Fumar , Adulto , Humanos , Atención a la Salud , Cese del Hábito de Fumar/métodos , Dispositivos para Dejar de Fumar Tabaco , Negro o Afroamericano
2.
Soc Sci Med ; 316: 115225, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-35931591

RESUMEN

OBJECTIVE: The objective of this study was to investigate racial centrality as a mediator of the association between Black adolescents' racial discrimination experiences and their cigarette use in early adulthood. METHODS: The data were drawn from the Family and Community Health Study, which is a longitudinal study of Black American families that began in 1996. Families with a child in 5th grade who identified as Black or African American were recruited from Iowa and Georgia. At baseline, there were 838 Black American children. Hierarchical regressions and bootstrap tests of the indirect effects were used to investigate whether racial centrality at Wave 5 (mean age = 21.6 years) mediated the association between adolescent discrimination at Waves 1-4 (mean ages = 10.5-18.8 years) and adult cigarette use at wave 6 (mean age = 23.5 years). RESULTS: Bivariate associations indicated racial discrimination was significantly associated positively with racial centrality and adult use of cigarettes. Racial centrality indirectly affected the association between racial discrimination and cigarette use such that greater racial centrality was associated with less cigarette use. Further, racial centrality predicted cessation among those who had smoked. Finally, racial centrality was higher among those who never smoked and those who had smoked and quit, relative to those who currently smoke. CONCLUSIONS: These findings suggest that having strong Black racial centrality is a mediator that reduces the risk of cigarette use among young adults who experience racial discrimination in adolescence. In addition, racial centrality also predicts smoking cessation among young Black Americans who smoke. Translational implications of these findings are discussed.


Asunto(s)
Fumar Cigarrillos , Racismo , Adulto Joven , Niño , Humanos , Adolescente , Adulto , Negro o Afroamericano , Estudios Longitudinales , Grupos Raciales
3.
Nicotine Tob Res ; 25(4): 781-787, 2023 03 22.
Artículo en Inglés | MEDLINE | ID: mdl-36169563

RESUMEN

INTRODUCTION: Black communities are targeted by more cigarette advertisements than White communities and racial discrimination among Black people is related to cigarette use. However, little is known about these factors with non-cigarette tobacco product use among Black adults. Therefore, this study assessed the association of non-cigarette advertisement exposure and racial discrimination with use of non-cigarette tobacco products among Black adults. AIMS AND METHODS: Black adults (n = 533) from The Family and Community Health Study in 2016 were asked if they had seen advertisements for e-cigarettes, snus pouches, filtered cigars, large cigars, cigarillos, dissolvable tobacco, smokeless tobacco, hookah, and tobacco pipe and if they used these in the past month. For products with the highest past month use and significant correlations with advertisement exposure, separate logistic regression models were performed that evaluated the association between advertisement exposure, racial discrimination, and non-cigarette tobacco product use while controlling for cigarette use, sex, socioeconomic status, and age. RESULTS: Use of cigarillos, large cigars, and hookah were higher than other non-cigarette tobacco products assessed. Logistic regressions revealed that more advertisement exposure in the past month was associated with higher odds of using cigarillos, large cigars, and hookah (p < .01). More experiences of racial discrimination were associated with past month cigarillo use, but not hookah or large cigars (p < .01). CONCLUSIONS: Non-cigarette tobacco advertisement exposure was associated with the use of non-cigarette tobacco products. Experiences of racial discrimination were associated with the most used non-cigarette tobacco product among Black adults, cigarillos. IMPLICATIONS: This is the first time that a specific type of cigar (ie cigarillos) has been associated with experiences of racial discrimination among Black adults. Efforts to reduce non-cigarette tobacco marketing and eradicate exposure to racial discrimination among Black adults may aid in eliminating tobacco-related health disparities.


Asunto(s)
Publicidad , Sistemas Electrónicos de Liberación de Nicotina , Racismo , Productos de Tabaco , Uso de Tabaco , Tabaco sin Humo , Adulto , Humanos , Estados Unidos , Negro o Afroamericano
4.
Artículo en Inglés | MEDLINE | ID: mdl-36294002

RESUMEN

In a sample of 685 late middle-aged Black adults (M age at 2019 = 57.17 years), we examined the effects of loneliness and per capita income on accelerated aging using a newly developed DNA-methylation based index: the DunedinPACE. First, using linear, mixed effects regression in a growth curve framework, we found that change in DunedinPACE was dependent on age, with a linear model best fitting the data (b = 0.004, p < 0.001), indicating that average pace of change increased among older participants. A quadratic effect was also tested, but was non-significant. Beyond the effect of age, both change in loneliness (b = 0.009, p < 0.05) and change in per capita income (b = -0.016, p < 0.001) were significantly associated with change in DunedinPACE across an 11-year period, accounting for significant between person variability observed in the unconditional model. Including non-self-report indices of smoking and alcohol use did not reduce the association of loneliness or per capita income with DunedinPACE. However, change in smoking was strongly associated with change in DunedinPACE such that those reducing their smoking aged less rapidly than those continuing to smoke. In addition, both loneliness and per capita income were associated with DunedinPACE after controlling for variation in cell-types.


Asunto(s)
Renta , Soledad , Adulto , Persona de Mediana Edad , Humanos , Envejecimiento , Población Negra , ADN
5.
Genes (Basel) ; 13(10)2022 10 18.
Artículo en Inglés | MEDLINE | ID: mdl-36292773

RESUMEN

Excessive alcohol consumption (EAC) has a generally accepted effect on morbidity and mortality, outcomes thought to be reflected in measures of epigenetic aging (EA). As the association of self-reported EAC with EA has not been consistent with these expectations, underscoring the need for readily employable non-self-report tools for accurately assessing and monitoring the contribution of EAC to accelerated EA, newly developed alcohol consumption DNA methylation indices, such as the Alcohol T Score (ATS) and Methyl DetectR (MDR), may be helpful. To test that hypothesis, we used these new indices along with the carbohydrate deficient transferrin (CDT), concurrent as well as past self-reports of EAC, and well-established measures of cigarette smoking to examine the relationship of EAC to both accelerated EA and immune cell counts in a cohort of 437 young Black American adults. We found that MDR, CDT, and ATS were intercorrelated, even after controlling for gender and cotinine effects. Correlations between EA and self-reported EAC were low or non-significant, replicating prior research, whereas correlations with non-self-report indices were significant and more substantial. Comparing non-self-report indices showed that the ATS predicted more than four times as much variance in EA, CDT4 cells and B-cells as for both the MDR and CDT, and better predicted indices of accelerated EA. We conclude that each of the non-self-report indices have differing predictive capacities with respect to key alcohol-related health outcomes, and that the ATS may be particularly useful for clinicians seeking to understand and prevent accelerated EA. The results also underscore the likelihood of substantial underestimates of problematic use when self-report is used and a reduction in correlations with EA and variance in cell-types.


Asunto(s)
Cotinina , Proteómica , Adulto , Humanos , Autoinforme , Consumo de Bebidas Alcohólicas/genética , Biomarcadores , Envejecimiento/genética , Epigénesis Genética , Carbohidratos
6.
Epigenetics ; 17(13): 1991-2005, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-35866695

RESUMEN

Smoking and Heavy Alcohol Consumption (HAC) are established risk factors for myriad complex disorders of ageing. Yet many prior studies of Epigenetic Ageing (EA) have shown only modest effects of smoking and drinking on accelerated ageing. One potential reason for this conundrum might be the reliance of some prior EA studies on self-reported substance use, which may be unreliable in many samples. To test whether novel, non-self-reported indices would show a stronger association of smoking and HAC to EA, we used methylation sensitive digital PCR (MSdPCR) and data from 437 African American subjects from Wave 7 of the Family and Community Health Study Offspring Cohort to examine the effects of subjective and objective measures of smoking and HAC on 7 indices of EA. Because of limited overall correlations between the various EA indices, we examined patterns of association separately for each index. Consistent with expectations, MSdPCR assessments of smoking and HAC, but not self-reported alcohol consumption, were strongly correlated with accelerated EA. MSdPCR assessments of smoking and HAC accounted for 57% of GrimAge acceleration and the shared variance in GrimAge and DunedinPOAM accelerated EA. We conclude that MSdPCR assessments of smoking and HAC are valuable tools for understanding EA, represent directly targetable conditions for the prevention of premature ageing, and substantially improve upon self-reported assessment of smoking and HAC.


Asunto(s)
Fumar , Productos de Tabaco , Humanos , Fumar/genética , Metilación de ADN , Envejecimiento/genética , Etanol , Epigénesis Genética , Consumo de Bebidas Alcohólicas/genética , Consumo de Bebidas Alcohólicas/efectos adversos
7.
Dev Psychopathol ; 34(2): 689-703, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-34924087

RESUMEN

We expand upon prior work (Gibbons et al., ) relating childhood stressor effects, particularly harsh childhood environments, to risky behavior and ultimately physical health by adding longer-term outcomes - deoxyribonucleic acid (DNA) methylation-based measures of accelerated aging (DNAm-aging). Further, following work on the effects of early exposure to danger (McLaughlin et al., ), we also identify an additional pathway from harsh childhood environments to DNAm-aging that we label the danger/FKBP5 pathway, which includes early exposure to dangerous community conditions that are thought to impact glucocorticoid regulation and pro-inflammatory mechanisms. Because different DNAm-aging indices provide different windows on accelerated aging, we contrast effects on early indices of DNAm-aging based on chronological age with later indices that focused on predicting biological outcomes. We utilize data from Family and Community Health Study participants (N = 449) from age 10 to 29. We find that harshness influences parenting, which, in turn, influences accelerated DNAm-aging through the risky cognitions and substance use (i.e., behavioral) pathway outlined by Gibbons et al. (). Harshness is also associated with increased exposure to threat/danger, which, in turn, leads to accelerated DNAm-aging through effects on FKBP5 activity and enhanced pro-inflammatory tendencies (i.e., the danger/FKBP5 pathway).


Asunto(s)
Experiencias Adversas de la Infancia , Metilación de ADN , Animales , Humanos , Adulto Joven , Niño , Adolescente , Adulto , Hylobates/genética , Envejecimiento/genética , ADN , Epigénesis Genética
8.
Front Psychiatry ; 12: 688384, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34504443

RESUMEN

Objective: Evolving patterns of nicotine and cannabis use by adolescents require new tools to understand the changing epidemiology of these substances. Here we describe the use of a novel epigenetic biomarker sensitive to both tobacco and cannabis smoke in a longitudinal sample of high-risk adolescents. We examine risk factors for positivity for this epigenetic biomarker in comparison to positivity for conventional serum biomarkers of nicotine and cannabis use. Method: Eastern Iowa 10th graders who had a friend or family member who smoked were eligible to participate in a longitudinal study over 10-12th grades. Subjects provided self-report data on nicotine, tobacco, and cannabis use patterns as well as blood samples that were used for serum cotinine and THC assays. DNA was prepared for analysis of methylation at the CpG cg05575921, a sensitive indicator of smoke exposure. Relationships between positivity for each these biomarkers and a variety of risk factors, including demographics, family and peer relationships, psychopathology, willingness to smoke, and perceptions of typical cigarette and cannabis users, were examined at the 10th (n = 442), 11th (n = 376), and 12th (n = 366) grade timepoints. Results: A increasing proportion of subjects were positive for cotinine (5-16%), THC (3-10%), and cg05575921 methylation (5-7%) across timepoints, with some overlap. Self-reported combusted tobacco and cannabis use was strongly correlated with all biomarkers, whereas cg05575921 methylation was not correlated with reported e-cigarette use. Dual users, defined as those positive for nicotine and THC in the 12th grade showed the greatest cumulative smoke exposure, indicated by cg05575921 methylation. Subjects reported more positive attitudes toward cannabis users than cigarette smokers, and willingness to smoke and positive perceptions of tobacco and cannabis smokers were significant risk factors for biomarker positivity across timepoints. Conclusion: We conclude that measurement of cg05575921 methylation in adolescents is a useful tool in detecting tobacco smoking in adolescents, and may be a novel tool for the detection of cannabis smoking and cannabis and tobacco co-use, though non-combusted forms of nicotine use do not appear to be detectable by this method.

9.
Health Psychol ; 40(3): 155-165, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33630637

RESUMEN

OBJECTIVE: Numerous studies have found evidence of a link between perceived discrimination and unhealthy behavior, especially substance use. Within this body of literature, however, several studies have found unexpected evidence of a positive relation between perceived racial discrimination among African Americans-mostly women-and certain types of healthy behavior, primarily exercise and healthy eating. The current study further examined this positive relation, including an anticipated moderator: optimism. It also examined the relation between perceived racial discrimination and a correlate of unhealthy behavior: BMI. METHOD: Six waves of data were collected over 14 years in three related samples of African Americans from families participating in the Family and Community Health Study. Each family included an adolescent (Mage = 10.5 at Wave 1), the adolescent's primary caregiver (Mage = 37), and, in some cases, an older sibling of that adolescent (Mage = 13). Wave 1 Ns were 889, 889, and 295, respectively. Healthy behavior was defined as diet and exercise. RESULTS: There was very little evidence of a long-term relation between perceived racial discrimination and BMI in any sample, and no evidence of a relation between discrimination and healthy behavior among the males. However, correlational analyses revealed a positive prospective relation between discrimination and healthy behavior among all three groups of females; structural equation modeling indicated that this relation was stronger among women who were high in optimism. CONCLUSIONS: Perceived racial discrimination does not appear to be related to BMI among African Americans, but it is related to healthy behavior among Black females who are high in dispositional optimism. (PsycInfo Database Record (c) 2021 APA, all rights reserved).


Asunto(s)
Negro o Afroamericano/psicología , Conductas Relacionadas con la Salud , Racismo/psicología , Percepción Social/psicología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Ansiedad/etnología , Cuidadores/psicología , Niño , Depresión/etnología , Femenino , Estado de Salud , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Trastornos Relacionados con Sustancias , Adulto Joven
10.
Epigenetics ; 16(10): 1135-1149, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-33138668

RESUMEN

Mortality assessments are conducted for both civil and commercial purposes. Recent advances in epigenetics have resulted in DNA methylation tools to assess risk and aid in this task. However, widely available array-based algorithms are not readily translatable into clinical tools and do not provide a good foundation for clinical recommendations. Further, recent work shows evidence of heritability and possible racial bias in these indices. Using a publicly available array data set, the Framingham Heart Study (FHS), we develop and test a five-locus mortality-risk algorithm using only previously validated methylation biomarkers that have been shown to be free of racial bias, and that provide specific assessments of smoking, alcohol consumption, diabetes and heart disease. We show that a model using age, sex and methylation measurements at these five loci outperforms the 513 probe Levine index and approximates the predictive power of the 1030 probe GrimAge index. We then show each of the five loci in our algorithm can be assessed using a more powerful, reference-free digital PCR approach, further demonstrating that it is readily clinically translatable. Finally, we show the loci do not reflect ethnically specific variation. We conclude that this algorithm is a simple, yet powerful tool for assessing mortality risk. We further suggest that the output from this or similarly derived algorithms using either array or digital PCR can be used to provide powerful feedback to patients, guide recommendations for additional medical assessments, and help monitor the effect of public health prevention interventions.


Asunto(s)
Metilación de ADN , Epigenómica , Consumo de Bebidas Alcohólicas , Epigénesis Genética , Humanos , Reacción en Cadena de la Polimerasa
11.
Clin Epigenetics ; 12(1): 92, 2020 06 24.
Artículo en Inglés | MEDLINE | ID: mdl-32580755

RESUMEN

The initiation of adolescent smoking is difficult to detect using carbon monoxide or cotinine assays. Previously, we and others have shown that the methylation of cg05575921 is an accurate predictor of adult smoking status. But the dose and time dependency of the demethylation response to smoking initiation in adolescents is not yet well understood. To this end, we conducted three consecutive annual in-person interviews and biological samplings of 448 high school students (wave 1 (W1)-wave 3 (W3)). At W1 (n = 448), 62 subjects reported using tobacco and 72 subjects reported using cannabis at least once in their life-time with 38 and 20 subjects having a positive cotinine and cannabinoid levels, respectively, at W1 intake. At W3 (n = 383), 67 subjects reported using tobacco and 60 subjects reported using cannabis at least once with 75 and 60 subjects having positive cotinine and cannabinoid levels, respectively, at W3. Subjects with undetectable cotinine levels at all three-time waves had stable levels of cg05575921 methylation throughout the study (88.7% at W1 and 88.8% at W3, n = 149), while subjects with positive cotinine levels at all 3 time points manifested a steady decrease in cg05575921 methylation (81.8% at W1 and 71.3% at the W3, n = 12). In those subjects with an affirmative smoking self-report at W3 (n = 17), the amount of demethylation at cg05575921 was correlated with time and intensity of smoking. We conclude that cg05575921 methylation is a sensitive, dose-dependent indicator of early stages of smoking, and may help to identify smokers in the early stages of smoking.


Asunto(s)
Factores de Transcripción con Motivo Hélice-Asa-Hélice Básico/genética , Metilación de ADN/genética , Proteínas Represoras/genética , Fumar/metabolismo , Adolescente , Factores de Transcripción con Motivo Hélice-Asa-Hélice Básico/metabolismo , Cannabinoides/análisis , Monóxido de Carbono/análisis , Estudios de Casos y Controles , Cotinina/análisis , Desmetilación , Epigenómica/métodos , Femenino , Humanos , Entrevistas como Asunto , Estudios Longitudinales , Masculino , Proteínas Represoras/metabolismo , Autoinforme , Fumar/epidemiología , Fumar/etnología
12.
Genes (Basel) ; 11(6)2020 06 22.
Artículo en Inglés | MEDLINE | ID: mdl-32580526

RESUMEN

Epigenetic aging (EA) indices are frequently used as predictors of mortality and other important health outcomes. However, each of the commonly used array-based indices has significant heritable components which could tag ethnicity and potentially confound comparisons across racial and ethnic groups. To determine if this was possible, we examined the relationship of DNA methylation in cord blood from 203 newborns (112 African American (AA) and 91 White) at the 513 probes from the Levine PhenoAge Epigenetic Aging index to ethnicity. Then, we examined all sites significantly associated with race in the newborn sample to determine if they were also associated with an index of ethnic genetic heritage in a cohort of 505 AA adults. After Bonferroni correction, methylation at 50 CpG sites was significantly associated with ethnicity in the newborn cohort. The five most significant sites predicted ancestry with a receiver operator characteristic area under the curve of 0.97. Examination of the top 50 sites in the AA adult cohort showed that methylation status at 11 of those sites was also associated with percentage European ancestry. We conclude that the Levine PhenoAge Index is influenced by cryptic ethnic-specific genetic influences. This influence may extend to similarly constructed EA indices and bias cross-race comparisons.


Asunto(s)
Envejecimiento/genética , Metilación de ADN/genética , Epigénesis Genética/genética , Negro o Afroamericano/genética , Envejecimiento/sangre , Etnicidad/genética , Femenino , Sangre Fetal/metabolismo , Hispánicos o Latinos/genética , Humanos , Recién Nacido , Masculino , Población Blanca/genética
13.
Am Psychol ; 75(7): 952-968, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-31621340

RESUMEN

The prospective relations between perceived racial discrimination (PRD), assessed at 4 different time periods from childhood through adolescence, along with assessments of PRD from the police ("hassling"), and self-reports of arrest and incarceration at a mean age of 24.5 years, were examined in a sample of 889 African Americans from the Family and Community Health Study. Multiple covariates were included in the analyses (e.g., academic orientation, socioeconomic status, self-control). Structural equation modeling revealed relations between PRD, especially that assessed in childhood, and both arrest and incarceration reported in adulthood. Mediators of these relations included deviant affiliation and self-reports of both substance use and illegal behavior. PRD from the police directly predicted subsequent illegal behavior. Racial pride moderated reactions to both types of PRD: Persons high in racial pride reported more illegal behavior after PRD from police but less illegal behavior in the absence of perceived police discrimination and less illegal behavior overall. Finally, childhood PRD, but not adolescent PRD, directly predicted incarceration that occurred up to 14 years later, and it did so when controlling for arrest, self-reported illegal behavior, and other covariates. The importance of childhood PRD experiences and possible avenues of intervention suggested by the pattern of results are discussed. (PsycInfo Database Record (c) 2020 APA, all rights reserved).


Asunto(s)
Negro o Afroamericano/etnología , Conducta Criminal/etnología , Policia/estadística & datos numéricos , Prisioneros/estadística & datos numéricos , Racismo/estadística & datos numéricos , Adolescente , Adulto , Niño , Femenino , Georgia/etnología , Humanos , Iowa/etnología , Estudios Longitudinales , Masculino , Adulto Joven
14.
J Child Adolesc Psychopharmacol ; 29(7): 535-544, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-31180231

RESUMEN

Objectives: Early identification of smoking, essential for the successful implementation of interventions, arrests the escalation of smoking and smoking-associated risk behaviors in adolescents. However, because nascent smoking is typically episodic and infrequent, enzyme-linked immunoassay reagent-based approaches that detect cotinine, a key nicotine metabolite, are not effective in identifying adolescents in the earliest stages of smoking. Epigenetic methods may offer an alternative approach for detecting early-stage smokers. In prior work, we and others have shown that the methylation status of cg05575921 of whole-blood DNA accurately predicts smoking status in regularly smoking adults and is sensitive to nascent smoking. Yet, the blood draws necessary to obtain DNA for this method may be poorly accepted by adolescents. Saliva could be an alternative source of DNA. However, the ability of saliva DNA methylation status to predict smoking status among adolescents is unknown. Methods: To explore the possibility of using salivary DNA for screening purposes, we examined the DNA methylation status at cg05575921 in saliva DNA samples from 162 high school aged subjects for whom we also had paired serum cotinine values. Results: Overall, the reliability of self-report of nicotine/tobacco use in these adolescents was poor with 67% of all subjects whose serum levels of cotinine was ≥2 ng/mL (n = 75) denying any use of nicotine-containing products in the past 6 months. However, the correspondence of the two biological measures of smoking was high, with serum cotinine positivity being strongly correlated with cg05575921 methylation (p < 0.0001). Receiver operating characteristic (ROC) analyses showed that cg05575921 methylation status could be used to classify those with positive serum cotinine values (≥2 ng/mL) from those denying smoking and have undetectable levels of cotinine. Conclusions: We conclude that saliva DNA methylation assessments hold promise as a means of detecting nascent smoking.


Asunto(s)
Cotinina/sangre , Metilación de ADN , Saliva/química , Fumar/genética , Adolescente , Femenino , Humanos , Masculino , Tamizaje Masivo/métodos , Reproducibilidad de los Resultados , Autoinforme , Fumar/metabolismo
15.
SSM Popul Health ; 7: 100389, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31080868

RESUMEN

OBJECTIVE: Chronic inflammation and expression of the TP53 gene are two biomarkers that have been identified as particularly important in the etiology and progression of cancer. While much is known about the determinants of inflammation, there is currently little information regarding the causes of variation in the functioning of TP53, even though it has been recognized for 40 years as the most potent of the cancer suppressor genes. The current paper explores the interrelationship between these two biomarkers and investigates the extent to which they are influenced by the social environment. METHODS: Using structural equation modeling (SEM) and longitudinal observational data from a sample of several hundred African Americans, we tested the hypothesis that adversity - operationalized as racial discrimination- and coping resources - operationalized as religiosity and black friends - influence expression of TP53, for better or worse, through their impact on inflammation. RESULTS: Correlational analysis showed inflammation and TP53 to be inversely related. Further, discrimination was positively related to inflammation and negatively related to TP53 expression, whereas religiosity and black friends were both negatively related to inflammation and positively related to TP53 expression. Finally, SEM indicated that the effect of the social environmental variables on TP53 expression was indirect through level of inflammation. CONCLUSIONS: In addition to its established contribution to cancer through DNA damage and cell proliferation, inflammation likely increases cancer risk indirectly by inhibiting expression of the TP53 cancer suppressor gene. Hence environmental and stress management interventions may do more than reduce inflammation's cell damaging effects; they may also lessen the chances of cancer by increasing expression of TP53.

16.
Stress ; 22(6): 632-639, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31010377

RESUMEN

Women and children belonging to a racial/ethnic minority bear a disproportionate burden of psychosocial stress that increases their vulnerability to adverse health outcomes. Hair cortisol has been rapidly advanced as a biomarker of the intensity and course of the stress response over time and may provide an opportunity to increase our understanding of the role of psychological stress in health. However, research on the link between hair cortisol levels and subjective measures of maternal and child stress among low-income and minority individuals is limited. The goal of this study was to examine the association between stress and hair cortisol in low income, minority women and children who experience disproportionate exposure to chronic stress. A convenience sample of 54 minority mother/child dyads from a busy primary care clinic in the second poorest medium-sized city in the US participated in the study. Mothers self-reported perceived stress, social support, household characteristics and other demographic factors, and their children (ages 7-14 years) reported on the perceived level of safety in their neighborhood and exposure to violence as markers of child stress. Three-centimeter hair samples were collected from both mothers and children during the clinic visit, and hair cortisol levels were assessed via enzyme-linked immunosorbent assays. Linear regression models examined associations between maternal and child hair cortisol, and between hair cortisol and perceived stress level in women, and moderation by social support. Maternal hair cortisol was not significantly associated with mother's perceived stress. Maternal and child hair cortisol levels were positively associated (p = .007) but this association was not moderated by maternal perceived social support. These findings suggest that hair cortisol is strongly associated among this sample of minority mother-child dyads and is not moderated by social support.


Asunto(s)
Cabello/metabolismo , Hidrocortisona/metabolismo , Madres/psicología , Apoyo Social , Adolescente , Adulto , Biomarcadores , Niño , Etnicidad , Femenino , Humanos , Hidrocortisona/análisis , Masculino , Grupos Minoritarios , Pobreza , Características de la Residencia , Estrés Psicológico/psicología
17.
Dev Psychopathol ; 30(5): 1629-1647, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30451139

RESUMEN

We examined the prospective relations between a cultural risk factor, perceived racial discrimination (PRD), and subsequent negative affect and health behavior (smoking) in a panel of 889 African American children (part of the Family and Community Health Study). Cultural moderators (protective factors) of these relations were also examined. PRD was assessed six times from ages 10.5 (Wave 1) to 24.5 (Wave 6), and negative affect (anger and depressive symptoms) was assessed at Wave 2 (age 12.5) and Wave 6 (age 24.5). Results indicated that Wave 1 PRD predicted Wave 6 smoking, controlling for multiple factors related to smoking and/or PRD, including smoking at age 15.5. Structural equation models indicated that these relations between Wave 1 PRD and smoking were mediated by both early and later negative affect. The models also indicated that Wave 1 PRD had a direct impact on Wave 6 anger (assessed 14 years later), controlling for the effects of PRD on early affect. Cultural socialization was associated with lower rates of adolescent smoking, and it buffered the relation between PRD and Wave 6 anger. The impact of early PRD experiences along with suggestions for culturally informed interventions and preventive interventions that might buffer against early PRD effects are discussed.


Asunto(s)
Ira , Negro o Afroamericano/estadística & datos numéricos , Depresión/epidemiología , Racismo/estadística & datos numéricos , Fumar/epidemiología , Adolescente , Afecto , Negro o Afroamericano/psicología , Niño , Depresión/etnología , Depresión/psicología , Femenino , Humanos , Masculino , Estudios Prospectivos , Factores Protectores , Racismo/psicología , Factores de Riesgo , Fumar/etnología , Fumar/psicología , Socialización , Estados Unidos/epidemiología , Adulto Joven
18.
Alcohol Clin Exp Res ; 42(7): 1291-1303, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29878386

RESUMEN

BACKGROUND: We examined how mothers' protective parenting and alcohol use influenced changes in offspring's heavy drinking among a sample of African American youth. The conceptual model also tested indirect effects of mothers' behaviors, through changes in the youths' social images (i.e., prototypes) of heavy drinkers, derived from the prototype willingness (PW) model. METHODS: Participants were 686 emerging adults (55% female) from the Family and Community Health Study (FACHS), an ongoing prospective study of African American families. Three waves of FACHS data were used as follows: T3 during 10th grade (M age = 16.3 years), T4 shortly after high school (M age = 19.4 years), and T5 3 years later (M age = 22.1 years). Mothers' self-reports of protective parenting and alcohol use were assessed at T4. Two separate path models tested the study hypotheses. The first model specified direct and indirect effects of mothers' protective parenting and alcohol use. The second model added interaction terms between the protective parenting behaviors and mothers' alcohol use. The analyses were first conducted using the full sample and then repeated separately for female and male participants. RESULTS: Maternal alcohol use had a positive and direct effect on offspring's alcohol use. Mothers' endorsement of alcohol-related rules inhibited normative increases in the favorability of the offspring's social image of heavy drinkers (prototype) while her warmth was positively related to these increases. Maternal alcohol use amplified the positive association between mothers' warmth and the daughters' increased drinking. For sons, maternal alcohol use increased the positive association between alcohol-related rules and increased prototype favorability. CONCLUSIONS: Results indicated clear gender differences in how mothers' behaviors influence her offspring's alcohol use during the transition to emerging adulthood. Interventions that target culturally specific risk and protective factors within the family environment are needed to reduce health disparities among this vulnerable population of youth.


Asunto(s)
Consumo de Bebidas Alcohólicas/psicología , Negro o Afroamericano/psicología , Relaciones Madre-Hijo/psicología , Madres/psicología , Responsabilidad Parental/psicología , Prueba de Estudio Conceptual , Adolescente , Factores de Edad , Consumo de Bebidas Alcohólicas/prevención & control , Consumo de Bebidas Alcohólicas/tendencias , Femenino , Humanos , Estudios Longitudinales , Masculino , Responsabilidad Parental/tendencias , Estudios Prospectivos , Adulto Joven
19.
Psychol Health ; 33(2): 193-212, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-28436272

RESUMEN

OBJECTIVE: The goal of the study was to examine differential mediation of long-term effects of discrimination on health behaviour and health status by internalising (anxiety and depression) and externalising (hostility and anger), and to explore moderation of these effects, specifically, by the presence of support networks and coping tendencies. DESIGN: The current analyses employed structural equation modelling of five waves of data from Black female participants of the Family and Community Health Study over 11 years (M age 37-48). MAIN OUTCOMES MEASURES: The main outcome variables were health status and alcohol use (frequency and problematic consumption). RESULTS: Perceived racial discrimination was associated with increases in internalising and externalising. In addition, internalising reactions to discrimination were associated with deterioration in health status and increases in problematic drinking; externalising reactions were associated with increases in frequency of drinking. These relations were attenuated by availability of support networks, and exacerbated by use of avoidance coping. CONCLUSION: The current study (a) replicated previous research suggesting that two different types of affective reactions mediate the relations between perceived racial discrimination and physical health status vs. health-impairing behaviours: internalising and externalising, and (b) revealed moderation of these effects by coping mechanisms.


Asunto(s)
Afecto , Negro o Afroamericano/psicología , Estado de Salud , Racismo/psicología , Adaptación Psicológica , Adulto , Negro o Afroamericano/estadística & datos numéricos , Consumo de Bebidas Alcohólicas/etnología , Femenino , Humanos , Persona de Mediana Edad , Percepción
20.
J Behav Med ; 41(2): 195-207, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-28905204

RESUMEN

Affirming one's racial identity may help protect against the harmful effects of racial exclusion on substance use cognitions. This study examined whether racial versus self-affirmation (vs. no affirmation) buffers against the effects of racial exclusion on substance use willingness and substance use word associations in Black young adults. It also examined anger as a potential mediator of these effects. After being included, or racially excluded by White peers, participants were assigned to a writing task: self-affirmation, racial-affirmation, or describing their sleep routine (neutral). Racial exclusion predicted greater perceived discrimination and anger. Excluded participants who engaged in racial-affirmation reported reduced perceived discrimination, anger, and fewer substance use cognitions compared to the neutral writing group. This relation between racial-affirmation and lower substance use willingness was mediated by reduced perceived discrimination and anger. Findings suggest racial-affirmation is protective against racial exclusion and, more generally, that ethnic based approaches to minority substance use prevention may have particular potential.


Asunto(s)
Afecto , Negro o Afroamericano/psicología , Grupo Paritario , Racismo/psicología , Autoimagen , Adolescente , Ira , Femenino , Humanos , Masculino , Grupos Minoritarios , Trastornos Relacionados con Sustancias/etnología , Trastornos Relacionados con Sustancias/psicología , Adulto Joven
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