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<title>Aydin Nazmi</title>
<copyright>Copyright (c) 2012  All rights reserved.</copyright>
<link>http://works.bepress.com/nazmi</link>
<description>Recent documents in Aydin Nazmi</description>
<language>en-us</language>
<lastBuildDate>Fri, 20 Jan 2012 01:40:06 PST</lastBuildDate>
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<title>Maternal smoking during pregnancy and risk factors for cardiovascular disease in adulthood</title>
<link>http://works.bepress.com/nazmi/12</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/12</guid>
<pubDate>Wed, 18 Jan 2012 15:00:39 PST</pubDate>
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	<p>Objective: This study was aimed at assessing the effect of maternal smoking during pregnancy on metabolic cardiovascular risk factors in early adulthood in a Brazilian birth cohort, after controlling for possible confounding variables and health behaviors in early adulthood.</p>
<p>Methods: In 1982, the maternity hospitals in Pelotas, southern Brazil, were visited and all births were identified. Those livebirths whose family lived in the urban area of the city were studied prospectively. In 2004–2005, we attempted to follow the whole cohort, the subjects were interviewed, examined and blood sample was collected. The following outcomes were studied: blood pressure; HDL cholesterol; triglycerides; random blood glucose and C-reactive protein. To explore the effect of maternal smoking, we adjusted the coefficients for the following possible mediators: perinatal factors (low birthweight and preterm births); adult behavioral factors (physical activity, dietary pattern, intake of fat and fiber, and tobacco smoking) and adult anthropometry (body mass index and waist circumference).</p>
<p>Results: In 2004–2005, we interviewed 4297 subjects, with a follow-up rate of 77.4%. The only significant finding in the unadjusted analyses was lower HDL cholesterol among females. After adjustment for lifestyle variables in early adulthood, birthweight and waist circumference, the difference in HDL levels between offspring of smokers and non-smokers reduced from −2.10 mg/dL (95% confidence interval: −3.39; −0.80) to −1.03 mg/dL (−2.35; 0.30).</p>
<p>Conclusion: Evidence that maternal smoking during pregnancy programs offspring metabolic cardiovascular risk factors are scarce, and reported associations are likely due to postnatal exposure to lifestyle patterns.</p>

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<author>Bernardo Lessa Horta et al.</author>


<category>Articles</category>

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<title>Cross-Sectional and Longitudinal Associations of Neighborhood Characteristics with Inflammatory Markers: Findings from the Multi-Ethnic Study Of Atherosclerosis</title>
<link>http://works.bepress.com/nazmi/11</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/11</guid>
<pubDate>Thu, 06 Jan 2011 14:12:32 PST</pubDate>
<description>
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	<p>We investigated cross-sectional associations of neighborhood deprivation, problems, safety, and cohesion with circulating levels of fibrinogen, interleukin-6, and C-reactive protein (n=5370) and longitudinal associations with changes in IL-6 over a 3–4 year period (n=946). In cross-sectional analyses, higher levels of neighborhood deprivation and problems were associated with higher levels of all three inflammatory markers, whereas higher levels of safety were associated with lower levels. Fibrinogen remained associated with all neighborhood characteristics except cohesion and IL-6 remained associated with safety after adjustment for race and SES. In longitudinal analyses, higher levels of neighborhood deprivation and problems, and lower levels of safety were associated with greater longitudinal increases in IL-6 after adjustment for age, sex, race, and SES. These findings were not substantially modified by further risk factor adjustment. Although findings regarding different inflammatory markers were mixed, the longitudinal results that are less limited by race confounding suggest that inflammatory pathways may contribute to neighborhood differences in cardiovascular disease risk.</p>

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<author>Aydin Nazmi et al.</author>


<category>Articles</category>

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<title>The Influence of Persistent Pathogens on Circulating Levels of Inflammatory Markers: A Cross-Sectional Analysis from the Multi-Ethnic Study Of Atherosclerosis</title>
<link>http://works.bepress.com/nazmi/10</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/10</guid>
<pubDate>Thu, 06 Jan 2011 14:12:30 PST</pubDate>
<description>
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	<p><b>Background</b>: Systemic inflammation is linked to cardiovascular risk, but the influence of persistent pathogens, which are conventionally dichotomously categorized, on circulating levels of inflammatory markers is not clear. Antibody levels of pathogens have not been examined in relation to inflammation.<br> <b>Methods</b>: Using data from a subsample of the Multi-Ethnic Study of Atherosclerosis, we examined circulating levels of interleukin-6 (IL-6), C-reactive protein (CRP) and fibrinogen in relation to five common persistent pathogens: <em>cytomegalovirus</em>, herpes simplex virus-1, Hepatitis A virus, <em>Helicobacter pylori</em> and <em>Chlamydia pneumoniae</em>. We tested the hypothesis that the number of seropositive pathogens (based on conventional cut-off points) would not be as sensitive a marker of inflammation as immune response measured by antibody levels to pathogens.<br> <b>Results</b>: High antibody response to multiple pathogens showed graded and significant associations with IL-6 (p < 0.001), CRP (p = 0.04) and fibrinogen (p = 0.001), whereas seropositive pathogen burden did not. In multiple linear regression models, high antibody response to multiple pathogens maintained a positive association only with IL-6 (4.4% per pathogen exhibiting high antibody response, 95% CI 0.0-8.9).<br /> <b>Conclusions</b>: High antibody response to pathogens was a more consistent marker of inflammatory outcomes compared to seropositivity alone and high antibody response to multiple pathogens was a stronger marker compared to any single pathogen.</p>

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<author>Aydin Nazmi et al.</author>


<category>Articles</category>

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<title>Lifecourse Socioeconomic Trajectories and C-Reactive Protein Levels in Young Adults: Findings from a Brazilian Birth Cohort</title>
<link>http://works.bepress.com/nazmi/9</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/9</guid>
<pubDate>Mon, 17 May 2010 15:29:14 PDT</pubDate>
<description>
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	<p>Socioeconomic factors are associated with cardiovascular disease. C-reactive protein (CRP) is increasingly implicated as a candidate linking conventional risk factors and atherosclerosis. The impact of early- and later-life socioeconomic status (SES) on CRP levels has not been widely investigated and a handful of studies from high-income countries are inconsistent. We set out to examine the associations between lifecourse socioeconomic indicators (family income at birth, maternal education, family income at age 23 and own education) on CRP levels in young adults belonging to the 1982 Pelotas (Brazil) Birth Cohort Study (<i>n</i> = 5914). Early-life SES showed significant and graded associations with CRP levels at age 23 independently of later SES. For example, men with higher family income at birth showed higher CRP levels at age 23 (p = 0.001 for trend) and women with less educated mothers showed higher CRP levels (p = 0.01 for trend). Notably, differential directions of association between SES indicators and CRP levels between men and women were found. When adjusted for SES at age 23, men with the lowest family income at birth showed 42% lower CRP levels when compared to men in the highest family income group (−42; 95% CI: -60,-16). In contrast women born to the least educated mothers had the highest CRP levels (35; 95% CI -2, 86). In both sexes, adiposity accounted for the overwhelming majority of the associations between SES and CRP levels. Sex and gender roles specific to middle-income countries, socio-cultural and environmental conditions that may impact adiposity, and the level of epidemiological transition may be key factors that are linked to the associations between lifecourse SES and CRP levels. Public health strategies aimed at decreasing the burden of cardiovascular disease in middle-income settings, in addition to highlighting the risks associated with adult obesity, should not overlook the wide-ranging impacts of lifecourse social determinants.</p>

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<author>Aydin Nazmi et al.</author>


<category>Articles</category>

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<title>Growth from birth to adulthood and abdominal obesity in a Brazilian birth cohort</title>
<link>http://works.bepress.com/nazmi/8</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/8</guid>
<pubDate>Fri, 05 Feb 2010 13:36:23 PST</pubDate>
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	<p><strong>Background:</strong> Rapid weight gain in childhood may increase the risk of chronic adult diseases. Few studies have examined the effects of lifecourse weight gain on waist circumference (WC), hip circumference (HC), or waist-to-hip ratio (WHR). <br><strong>Objective:</strong> To evaluate the effects of birthweight and weight gain from birth to age 23 years on WC, HC, and WHR in young adults. <br><strong>Design:</strong> Population-based birth cohort study started in 1982. A sample of 856 individuals was examined in 2006. Conditional growth analyses were carried out with adjustment for confounders. WC and HC were also mutually adjusted. <br><strong>Results:</strong> Weight gains during all age ranges studied (birthweight, 0–2, 2–4, 4–15, 15–18/19, and 18/19–23 years) were positively associated with WC and HC in both sexes. These effects were strongest from 4 to 15 years range (<em>β</em>=5.0 cm for both circumferences). Proxies for visceral adipose tissue (WHR and WC adjusted for HC) were associated with weight gain after 2 years in females and after 4 years in males. Subcutaneous adipose and muscular tissues, assessed by HC adjusted for WC, were associated with birthweight and weight gain from 0 to 2 years in both sexes, and again with weight gains from 4 to 18 years in males and 4 to 15 years in females. <br><strong>Conclusions:</strong> Weight gains <em>in utero</em> and in the first 2 years had long-term effects on HC, but weight gain after age 4 years was strongly associated with WC. Weight gains up to age 2 years may reduce cardiovascular risk associated with adult fat patterns in a middle-income setting.</p>

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<author>D. A. Gonzalez et al.</author>


<category>Articles</category>

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<title>Childhood Poverty and Abdominal Obesity in Adulthood: A Systematic Review</title>
<link>http://works.bepress.com/nazmi/7</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/7</guid>
<pubDate>Mon, 25 Jan 2010 10:16:07 PST</pubDate>
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	<p>Adverse socioeconomic conditions in childhood can have lasting effects on health, but evidence is lacking from prospective studies concerning the effects of early poverty on abdominal obesity in adulthood. Cross-sectional studies in adults from middle and high-income countries show that current socioeconomic status is inversely related to obesity in women, but the pattern in men is not consistent. A systematic review was undertaken to assess the influence of early socioeconomic status on waist circumference, hip circumference, and waist-hip ratio in adulthood. Thirteen relevant articles were located (five cross-sectional and eight cohort), including only one from a middle-income country and the remainder from high-income settings. In all the studies, childhood poverty was associated with higher levels of abdominal obesity in women. In men, the associations were weaker, and no clear pattern emerged.</p>

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<author>David González et al.</author>


<category>Articles</category>

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<title>Epidemiology of early and late growth in height, leg and trunk length: findings from a birth cohort of Brazilian males</title>
<link>http://works.bepress.com/nazmi/6</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/6</guid>
<pubDate>Fri, 25 Sep 2009 15:42:48 PDT</pubDate>
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	<p><strong>Background/Objective:</strong>  To investigate socioeconomic, gestational and early life exposures as potential determinants of total height, leg and trunk length.</p>
<p><strong>Subjects/Methods:</strong>  Male subjects from the 1982 Pelotas Birth Cohort Study were examined in 1986 at home, and in 2000 when registering at the local army base. The follow-up rate was 79%. Standing and sitting heights were measured on both occasions. Leg length was calculated as the difference between standing and sitting heights. Outcome measures were height, leg and trunk length at 4 and 18 years and growth in this period. Complete data were obtained for 2012 participants, representing 71% of all eligible male subjects.</p>
<p><strong>Results:</strong>  Mean (s.d.) height, trunk length and leg length at 18 years were 173.4 (6.8), 96.0 (3.5) and 77.5 cm (4.5), respectively. The mean (s.d.) change in height from 1986 to 2000 was 75.4 cm (5.2) and for leg and trunk length 35.4 (3.9) and 40.0 cm (2.9), respectively. Of 11 independent variables analyzed, only maternal height and birthweight were associated with all three variables of growth. Gestational age showed no associations with growth or attained size.</p>
<p><strong>Conclusions:</strong>  Early growth plays a pivotal role in determining attained height and its components. Both biological and socioeconomic variables strongly influence determinants of height, though socioeconomic factors appear to be more important in early growth. Leg and trunk length contribute almost equally to differences in overall height, regardless of the independent variable influencing the difference. Public health strategies designed to improve chronic disease profiles should focus on the early growth period.</p>

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<author>D. P. Gigante et al.</author>


<category>Articles</category>

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<title>Life-course socio-economic factors, skin colour and abdominal obesity in adulthood in a Brazilian birth cohort</title>
<link>http://works.bepress.com/nazmi/4</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/4</guid>
<pubDate>Fri, 25 Sep 2009 15:42:47 PDT</pubDate>
<description>
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	<p><em>Objective:</em> Obesity is an increasingly prevalent nutritional disorder throughout the world. In particular, abdominal obesity is associated with cardiovascular and metabolic risk. The present study aimed to evaluate the effects of skin colour and life-course socio-economic indicators on waist circumference (WC), hip circumference (HC) and waist:hip ratio (WHR) in young adults.</p>
<p><em>Design:</em> Population-based birth cohort study. Individuals born in 1982 in Pelotas (southern Brazil) were visited on a number of occasions from birth to age 23–24 years. A sample of the cohort was sought in 2006 and 972 individuals were located. The analysis was restricted to individuals with complete data available (442 males, 414 females).</p>
<p><em>Results:</em> In men, family income at birth and in 2004–5 were positively associated with WC and HC, but not with WHR. Regardless of current income, men born to wealthier families had larger WC and HC as adults. Skin colour was not associated with any of the outcomes. In women, early poverty was associated with smaller HC, and current poverty with larger WC. Poverty at any age thus led to higher WHR. Black women had larger WC and HC than white women, but there were no differences in WHR. All the associations were partially mediated by education and behavioural variables.</p>
<p><em>Conclusions:</em> The effects of early socio-economic position on WC and HC persist even after adjustment for adult socio-economic position, highlighting the importance of interventions during the first years of life.</p>

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<author>David A. Gonzalez et al.</author>


<category>Articles</category>

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<title>Socioeconomic and racial/ethnic differentials of C-reactive protein levels: a systematic review of population-based studies</title>
<link>http://works.bepress.com/nazmi/5</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/5</guid>
<pubDate>Fri, 25 Sep 2009 15:42:47 PDT</pubDate>
<description>
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	<p><strong>Background:</strong>   Socioeconomic and racial/ethnic factors strongly influence cardiovascular disease outcomes and risk factors. C-reactive protein (CRP), a non-specific marker of inflammation, is associated with cardiovascular risk, and knowledge about its distribution in the population may help direct preventive efforts. A systematic review was undertaken to critically assess CRP levels according to socioeconomic and racial/ethnic factors.</p>
<p><strong>Methods:</strong>  Medline was searched through December 2006 for population-based studies examining CRP levels among adults with respect to indicators of socioeconomic position (SEP) and/or race/ethnicity. Bibliographies from located studies were scanned and 26 experts in the field were contacted for unpublished work.</p>
<p><strong>Results:</strong>  Thirty-two relevant articles were located. Cross-sectional (n = 20) and cohort studies (n = 11) were included, as was the control group of one trial. CRP levels were examined with respect to SEP and race/ethnicity in 25 and 15 analyses, respectively. Of 20 studies that were unadjusted or adjusted for demographic variables, 19 found inverse associations between CRP levels and SEP. Of 15 similar studies, 14 found differences between racial/ethnic groups such that whites had the lowest while blacks, Hispanics and South Asians had the highest CRP levels. Most studies also included adjustment for potential mediating variables in the causal chain between SEP or race/ethnicity and CRP. Most of these studies showed attenuated but still significant associations.</p>
<p><strong>Conclusion:</strong>  Increasing poverty and non-white race was associated with elevated CRP levels among adults. Most analyses in the literature are underestimating the true effects of racial/ethnic and socioeconomic factors due to adjustment for mediating factors.</p>

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<author>Aydin Nazmi et al.</author>


<category>Articles</category>

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<title>Correlates of C-reactive protein levels in young adults: a population-based cohort study of 3827 subjects in Brazil</title>
<link>http://works.bepress.com/nazmi/3</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/3</guid>
<pubDate>Fri, 25 Sep 2009 15:42:46 PDT</pubDate>
<description>
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	<p>The socio-demographic, behavioral and anthropometric correlates of C-reactive protein levels were examined in a representative young adult Brazilian population. The 1982 Pelotas Birth Cohort Study (Brazil) recruited over 99% of births in the city of Pelotas that year (N = 5914). Individuals belonging to the cohort have been prospectively followed up. In 2004-2005, 77.4% of the cohort was traced, members were interviewed and 3827 individuals donated blood. Analyses of the outcome were based on a conceptual model that differentiated confounders from potential mediators. The following independent variables were studied in relation to levels of C-reactive protein in sex-stratified analyses: skin color, age, family income, education, parity, body mass index, waist circumference, smoking, fat/fiber/alcohol intake, physical activity, and minor psychiatric disorder. Geometric mean (95% confidence interval) C-reactive protein levels for the 1919 males and 1908 females were 0.89 (0.84-0.94) and 1.96 mg/L (1.85-2.09), respectively. Pregnant women and those using oral contraceptive therapies presented the highest C-reactive protein levels and all sub-groups of women had higher levels than men (P < 0.001). Significant associations between C-reactive protein levels were observed with age, socioeconomic indicators, obesity status, smoking, fat and alcohol intake, and minor psychiatric disorder. Associations were stronger at higher levels of C-reactive protein and some associations were sex-specific. We conclude that both distal (socio-demographic) and proximal (anthropometric and behavioral) factors exert strong effects on C-reactive protein levels and that the former are mediated to some degree by the latter.</p>

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<author>Aydin Nazmi et al.</author>


<category>Articles</category>

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<title>Hb A1c in relation to intrauterine growth among male adolescents in southern Brazil</title>
<link>http://works.bepress.com/nazmi/1</link>
<guid isPermaLink="true">http://works.bepress.com/nazmi/1</guid>
<pubDate>Fri, 25 Sep 2009 15:42:45 PDT</pubDate>
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	<p>The fetal origins hypothesis states that nutritional deprivation <em>in utero</em> affects fetal development and contributes to the incidence of diseases associated with the metabolic syndrome in later life. This study investigated whether haemoglobin (Hb) A<sub>1c</sub>, an indicator of blood glucose, varied among healthy male adolescents according to their fetal growth rate, in a middle-income setting. Participants were men aged 18 years, belonging to the 1982 Pelotas birth cohort. Complete data, including gestational age and Hb A<sub>1c</sub> at age 18 years, were available for 197 individuals. There was an inverse association between mean Hb A<sub>1c</sub> and birthweight for the gestational age, but not birthweight alone. The association remained significant after adjustment for family income and mother's education, as well as for body mass index at 18 years (P for trend=0.01 and 0.03, respectively).</p>

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<author>Aydin Nazmi et al.</author>


<category>Articles</category>

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