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Nested case-control study

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https://www.readbyqxmd.com/read/29332674/sleep-apnea-and-pesticide-exposure-in-a-study-of-us-farmers
#1
Brittney O Baumert, Megan Ulmer Carnes, Jane A Hoppin, Chandra L Jackson, Dale P Sandler, Laura Beane Freeman, Paul K Henneberger, David M Umbach, Srishti Shrestha, Stuart Long, Stephanie J London
INTRODUCTION: Carbamate and organophosphate pesticides inhibit acetylcholinesterase, and poisoning leads to respiratory depression. Thus, involvement in sleep apnea is plausible, but no data exist at lower levels of exposure. Other pesticides could impact sleep apnea by different mechanisms but have not been studied. Our study examines the associations between pesticide exposure and sleep apnea among pesticide applicators from a US farming population. PARTICIPANTS AND METHODS: We analyzed data from 1569 male pesticide applicators, mostly farmers, from an asthma case-control study nested within the prospective Agricultural Health Study...
February 2018: Sleep Health
https://www.readbyqxmd.com/read/29329337/mitochondrial-dna-ancestry-hpv-infection-and-the-risk-of-cervical-cancer-in-a-multiethnic-population-of-northeastern-argentina
#2
Ines Badano, Daiana J Sanabria, Maria E Totaro, Samara Rubinstein, Juan A Gili, Domingo J Liotta, Maria A Picconi, Rodolfo H Campos, Theodore G Schurr
BACKGROUND: Misiones Province in northeastern Argentina is considered to be a region with a high prevalence of HPV infection and a high mortality rate due to cervical cancer. The reasons for this epidemiological trend are not completely understood. To gain insight into this problem, we explored the relationship between mitochondrial DNA (mtDNA) ancestry, HPV infection, and development of cervical lesions/cancer in women from the city of Posadas in Misiones Province. METHODS: Two hundred and sixty-one women, including 92 cases of patients diagnosed with cervical lesions and 169 controls, were analyzed...
2018: PloS One
https://www.readbyqxmd.com/read/29327520/risk-factors-of-clinical-and-immunological-failure-in-south-indian-cohort-on-generic-antiretroviral-therapy
#3
Mucheli Shravan Sadashiv, Priscilla Rupali, Abi Manesh, Rajesh Kannangai, Ooriapadickal Cherian Abraham, Susanne A Pulimood, Rajiv Karthik, S Rajkumar, Kurien Thomas
Background: Since the time of NACO Antiretroviral (ART) roll-out, generic ART has been the mainstay of therapy. There are many studies documenting the efficacy of generic ART but with the passage of time, failure of therapy is on the rise. As institution of second line ART has significant financial implications both for a program and for an individual it is imperative that we determine factors which contribute towards treatment failure in a cohort of patients on generic antiretroviral therapy...
December 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29327043/association-of-oral-microbiome-with-risk-for-incident-head-and-neck-squamous-cell-cancer
#4
Richard B Hayes, Jiyoung Ahn, Xiaozhou Fan, Brandilyn A Peters, Yingfei Ma, Liying Yang, Ilir Agalliu, Robert D Burk, Ian Ganly, Mark P Purdue, Neal D Freedman, Susan M Gapstur, Zhiheng Pei
Importance: Case-control studies show a possible relationship between oral bacteria and head and neck squamous cell cancer (HNSCC). Prospective studies are needed to examine the temporal relationship between oral microbiome and subsequent risk of HNSCC. Objective: To prospectively examine associations between the oral microbiome and incident HNSCC. Design, Setting, and Participants: This nested case-control study was carried out in 2 prospective cohort studies: the American Cancer Society Cancer Prevention Study II Nutrition Cohort (CPS-II) and the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial (PLCO)...
January 11, 2018: JAMA Oncology
https://www.readbyqxmd.com/read/29325144/a-metabolomics-analysis-of-body-mass-index-and-postmenopausal-breast-cancer-risk
#5
Steven C Moore, Mary C Playdon, Joshua N Sampson, Robert N Hoover, Britton Trabert, Charles E Matthews, Regina G Ziegler
Background: Elevated body mass index (BMI) is associated with increased risk of postmenopausal breast cancer. The underlying mechanisms, however, remain elusive. Methods: In a nested case-control study of 621 postmenopausal breast cancer case participants and 621 matched control participants, we measured 617 metabolites in prediagnostic serum. We calculated partial Pearson correlations between metabolites and BMI, and then evaluated BMI-associated metabolites (Bonferroni-corrected α level for 617 statistical tests = P < 8...
January 9, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29321603/plasma-adiponectin-levels-and-type-2-diabetes-risk-a-nested-case-control-study-in-a-chinese-population-and-an-updated-meta-analysis
#6
Yeli Wang, Rui-Wei Meng, Setor K Kunutsor, Rajiv Chowdhury, Jian-Min Yuan, Woon-Puay Koh, An Pan
Results from previous prospective studies assessing the relation between adiponectin and type 2 diabetes (T2D) were not entirely consistent, and evidence in Chinese population is scarce. Moreover, the last meta-analysis did not examine the impact of metabolic variables on the adiponectin-T2D association. Therefore, we prospectively evaluated the adiponectin-T2D association among 571 T2D cases and 571 age-sex-matched controls nested within the Singapore Chinese Health Study (SCHS). Furthermore, we conducted an updated meta-analysis by searching prospective studies on Pubmed till September 2016...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29320416/eating-patterns-in-patients-with-compensated-cirrhosis-a-case-control-study
#7
Camille Buscail, Valérie Bourcier, Léopold K Fezeu, Dominique Roulot, Séverine Brulé, Zahia Ben-Abdesselam, Carole Cagnot, Serge Hercberg, Pierre Nahon, Nathalie Ganne-Carrié, Chantal Julia
BACKGROUND: There is growing evidence suggesting that maintaining an adequate nutritional status for patients with liver cirrhosis (LC) is relevant to prevent complications. The present study aimed to describe dietary behaviours of patients with compensated and non-complicated LC and comparing them with those of subjects from the general population. METHODS: In this case-control study, patients were volunteers enrolled in the ALICIR (ALImentation et CIRrhose) study, an observational survey nested in two French prospective cohorts of patients with biopsy-proven compensated cirrhosis related either to excessive alcohol consumption (CIRRAL) or to hepatitis B or C virus infection (CirVir)...
January 10, 2018: Nutrients
https://www.readbyqxmd.com/read/29318656/circadian-genes-and-risk-of-prostate-cancer-in-the-prostate-cancer-prevention-trial
#8
Lisa W Chu, Cathee Till, Baiyu Yang, Catherine M Tangen, Phyllis J Goodman, Kai Yu, Yong Zhu, Summer Han, Ashraful M Hoque, Christine Ambrosone, Ian Thompson, Robin Leach, Ann W Hsing
Circadian genes have been considered as a possible biological mechanism for the observed relationship between circadian rhythm disruptions and increased risk of hormone-related cancers. In the current study, we investigated the relationship between circadian gene variants and prostate cancer risk and whether reducing bioavailable testosterone modifies the circadian genes-prostate cancer relationship. We conducted a nested case-control study among Caucasian men in the Prostate Cancer Prevention Trial (PCPT), a randomized placebo-controlled clinical trial to assess if finasteride (an androgen bioactivation inhibitor) could prevent prostate cancer...
January 10, 2018: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/29315564/circulating-anti-m%C3%A3-llerian-hormone-and-breast-cancer-risk-a-study-in-ten-prospective-cohorts
#9
Wenzhen Ge, Tess V Clendenen, Yelena Afanasyeva, Karen L Koenig, Claudia Agnoli, Louise A Brinton, Joanne F Dorgan, A Heather Eliassen, Roni T Falk, Göran Hallmans, Susan E Hankinson, Judith Hoffman-Bolton, Timothy J Key, Vittorio Krogh, Hazel B Nichols, Dale P Sandler, Minouk J Schoemaker, Patrick M Sluss, Malin Sund, Anthony J Swerdlow, Kala Visvanathan, Mengling Liu, Anne Zeleniuch-Jacquotte
A strong positive association has been observed between circulating anti-Müllerian hormone (AMH), a biomarker of ovarian reserve, and breast cancer risk in three prospective studies. Confirming this association is important because of the paucity of biomarkers of breast cancer risk in premenopausal women. We conducted a consortium study including ten prospective cohorts that had collected blood from premenopausal women. A nested case-control design was implemented within each cohort. A total of 2,835 invasive (80%) and in situ (20%) breast cancer cases were individually matched to controls (n = 3,122) on age at blood donation...
January 8, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29310692/epigenetic-supersimilarity-of-monozygotic-twin-pairs
#10
Timothy E Van Baak, Cristian Coarfa, Pierre-Antoine Dugué, Giovanni Fiorito, Eleonora Laritsky, Maria S Baker, Noah J Kessler, Jianrong Dong, Jack D Duryea, Matt J Silver, Ayden Saffari, Andrew M Prentice, Sophie E Moore, Akram Ghantous, Michael N Routledge, Yun Yun Gong, Zdenko Herceg, Paolo Vineis, Gianluca Severi, John L Hopper, Melissa C Southey, Graham G Giles, Roger L Milne, Robert A Waterland
BACKGROUND: Monozygotic twins have long been studied to estimate heritability and explore epigenetic influences on phenotypic variation. The phenotypic and epigenetic similarities of monozygotic twins have been assumed to be largely due to their genetic identity. RESULTS: Here, by analyzing data from a genome-scale study of DNA methylation in monozygotic and dizygotic twins, we identified genomic regions at which the epigenetic similarity of monozygotic twins is substantially greater than can be explained by their genetic identity...
January 9, 2018: Genome Biology
https://www.readbyqxmd.com/read/29309629/changes-in-inflammation-but-not-in-t-cell-activation-precede-non-aids-defining-events-in-a-case-control-study-of-patients-on-long-term-antiretroviral-therapy
#11
Konstantia Angelidou, Peter W Hunt, Alan L Landay, Cara C Wilson, Benigno Rodriguez, Steven G Deeks, Ronald J Bosch, Michael M Lederman
Background: We examine changes in soluble inflammatory cytokines and T-cell activation after antiretroviral therapy (ART) initiation in an ACTG nested case-control study. Methods: Cases were 143 HIV-infected adults who developed a non-AIDS event; 315 controls remained event-free. Specimens were tested pre-ART, year 1 post-ART and at the visit preceding the event. Conditional logistic regression evaluated the associations of biomarker changes with non-AIDS events...
December 22, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29308696/early-pregnancy-protein-multiplex-screening-reflects-circulating-and-urinary-divergences-associated-with-the-development-of-preeclampsia
#12
Margarita L Martinez-Fierro, Claudia Castruita-De La Rosa, Idalia Garza-Veloz, Rosa M Cardiel-Hernandez, Marcela A Espinoza-Juarez, Ivan Delgado-Enciso, Maria E Castañeda-Lopez, Edith Cardenas-Vargas, Fabiola Trejo-Vázquez, Elma I Sotelo-Ham, Rodrigo Castañeda-Miranda, Miguel A Cid-Baez, Jose M Ortiz-Rodriguez, Luis O Solis-Sanchez, Angelica Garcia Aviles, Yolanda Ortiz-Castro
BACKGROUND: Preeclampsia, a pregnancy disorder characterized by hypertension and proteinuria, represents the leading cause of fetal and maternal morbidity and mortality in developing countries. The identification of novel and accurate biomarkers that are predictive of preeclampsia is necessary to improve the prognosis of patients with preeclampsia. OBJECTIVE: To evaluate the preeclampsia predictive value of 34 angiogenic-related proteins. METHODS: We performed a nested cohort case-control study of pregnant women...
January 8, 2018: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/29308443/relationship-between-adiponectin-and-apob-in-individuals-with-diabetes-in-the-atlantic-path-cohort
#13
Vanessa DeClercq, Yunsong Cui, Trevor J B Dummer, Cynthia Forbes, Scott A Grandy, Melanie Keats, Louise Parker, Ellen Sweeney, Zhijie Michael Yu, Roger S McLeod
Context: The increasing prevalence of obesity and diabetes greatly influences the risk for cardiovascular (CV) comorbidities and affects the quality of life of many people. However, the relationship among diabetes, obesity, and cardiovascular risk is complex and requires further investigation to understand the biological milieu connecting these conditions. Objective: The aim of the current study was to explore the relationship between biological markers of adipose tissue function (adiponectin) and CV risk (apolipoprotein B) in body mass index (BMI)-matched participants with and without diabetes...
December 1, 2017: Journal of the Endocrine Society
https://www.readbyqxmd.com/read/29307261/high-inducible-nitric-oxide-synthase-in-prostate-tumor-epithelium-is-associated-with-lethal-prostate-cancer
#14
Ann Erlandsson, Jessica Carlsson, Sven-Olof Andersson, Chraig Vyas, Pernilla Wikström, Ove Andrén, Sabina Davidsson, Jennifer R Rider
OBJECTIVE: The aim of this study was to investigate the role of inducible nitric oxide synthase (iNOS) in lethal prostate cancer (PCa) by studying the iNOS immunoreactivity in tumor tissue from men diagnosed with localized PCa. MATERIALS AND METHODS: This study is nested within a cohort of men diagnosed with incidental PCa undergoing transurethral resection of the prostate (the Swedish Watchful Waiting Cohort). To investigate molecular determinants of lethal PCa, men who died from PCa (n = 132) were selected as cases; controls (n = 168) comprised men with PCa who survived for at least 10 years without dying from PCa during follow-up...
January 8, 2018: Scandinavian Journal of Urology
https://www.readbyqxmd.com/read/29307255/serum-bioavailable-estradiol-may-alter-radiation-risk-of-postmenopausal-breast-cancer-a-nested-case-control-study
#15
Eric J Grant, John B Cologne, Gerald B Sharp, Hidetaka Eguchi, Richard G Stevens, Shizue Izumi, Young-Min Kim, Amy Berrington de González, Waka Ohishi, Kei Nakachi
PURPOSE: Ionizing radiation and high levels of circulating estradiol are known breast cancer carcinogens. We investigated the risk of first primary postmenopausal breast cancer in relation to the combined effects of whole-body ionizing radiation exposure and prediagnostic levels of postmenopausal sex hormones, particularly bioavailable estradiol (bE2). MATERIALS AND METHODS: A nested case-control study of 57 incident breast cancer cases matched with 110 controls among atomic bomb survivors...
January 8, 2018: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/29304045/maternal-suicide-register-based-study-of-all-suicides-occurring-after-delivery-in-sweden-1974-2009
#16
Henrik Lysell, Marie Dahlin, Alexander Viktorin, Elsa Ljungberg, Brian M D'Onofrio, Paul Dickman, Bo Runeson
BACKGROUND: Recent research suggests that having a newborn child is associated with substantially reduced risk for maternal suicide. We studied postpartum suicides in a national cohort of mothers and the role of mental disorder, self-harm and delivery related factors. METHODS: We used a nested case-control design with data from Swedish registries. The cohort consisted of all women given birth in Sweden 1974-2009. Mothers who died by suicide during follow-up were considered cases (n = 1,786) and risk of suicide was estimated with proximity to delivery as the explanatory variable...
2018: PloS One
https://www.readbyqxmd.com/read/29301492/effect-of-grm7-polymorphisms-on-the-development-of-noise-induced-hearing-loss-in-chinese-han-workers-a-nested-case-control-study
#17
Peipei Yu, Jie Jiao, Guoshun Chen, Wenhui Zhou, Huanling Zhang, Hui Wu, Yanhong Li, Guizhen Gu, Yuxin Zheng, Yue Yu, Shanfa Yu
BACKGROUND: Noise-induced hearing loss (NIHL) is a complex, irreversible disease caused by the interaction of genetic and environmental factors. In recent years, a great many studies have been done to explore the NIHL susceptibility genes among humans. So far, high powerful detections have been founded that genes of potassium ion channel genes (KCNQ4 and KCNE1), catalase (CAT), protocadherin 15 (PCDH15), myosin 14 (MYH14) and heart shock protein (HSP70) which have been identified in more than one population may be associated with the susceptibility to NIHL...
January 5, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/29301441/use-of-the-fetal-myocardial-performance-index-in-monochorionic-diamniotic-twin-pregnancy-a-prospective-cohort-and-nested-case-control-study
#18
Amanda Henry, Saranya Gopikrishna, Aditi Mahajan, Jennifer Alphonse, Neama Meriki, Alec W Welsh
AIMS: Assess clinical utility of the fetal Myocardial Performance Index (MPI) in evaluation and management of monochorionic, diamniotic twin (MCDA) pregnancies. METHODS: Prospective cohort of a) initially uncomplicated MCDA b) Complicated MCDA, including twin-twin transfusion syndrome (TTTS), selective intrauterine growth restriction (sIUGR), and liquor and/or growth discordance (L/GD) not meeting TTTS or sIUGR criteria. TTTS and sIUGR were case-control matched...
January 4, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29298162/prenatal-maternal-serum-concentrations-of-per-and-polyfluoroalkyl-substances-in-association-with-autism-spectrum-disorder-and-intellectual-disability
#19
Kristen Lyall, Vincent M Yau, Robin Hansen, Martin Kharrazi, Cathleen K Yoshida, Antonia M Calafat, Gayle Windham, Lisa A Croen
BACKGROUND: Emerging work has examined neurodevelopmental outcomes following prenatal exposure to per- and polyfluoroalkyl substances (PFAS), but few studies have assessed associations with autism spectrum disorder (ASD). OBJECTIVES: Our objective was to estimate associations of maternal prenatal PFAS concentrations with ASD and intellectual disability (ID) in children. METHODS: Participants were from a population-based nested case-control study of children born from 2000 to 2003 in southern California, including children diagnosed with ASD (n=553), ID without autism (n=189), and general population (GP) controls (n=433)...
January 2, 2018: Environmental Health Perspectives
https://www.readbyqxmd.com/read/29298081/paratracheal-paraseptal-emphysema-and-expiratory-central-airway-collapse-in-smokers
#20
Carla R Copeland, Hrudaya Nath, Nina L J Terry, Carla G Wilson, Young-Il Kim, David A Lynch, Sandeep Bodduluri, J Michael Wells, Mark T Dransfield, Alejandro A Díaz, George R Washko, Marilyn G Foreman, Surya P Bhatt
RATIONALE: Expiratory central airway collapse (ECAC) is associated with respiratory morbidity independent of underlying lung disease. However, not all smokers develop ECAC and the etiology of ECAC in adult smokers is unclear. Paraseptal emphysema in the paratracheal location, by untethering airway walls, may predispose smokers to developing ECAC. OBJECTIVE: To evaluate whether paratracheal paraseptal emphysema (paratracheal PSE) is associated with ECAC. METHODS: We analyzed paired inspiratory and expiratory computed tomography scans from participants enrolled in a multicenter study (COPDGene) of smokers aged 45-80 years...
January 3, 2018: Annals of the American Thoracic Society
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