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Richard Hopper

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https://www.readbyqxmd.com/read/29674730/birth-size-and-gestational-age-in-opposite-sex-twins-as-compared-to-same-sex-twins-an-individual-based-pooled-analysis-of-21-cohorts
#1
Aline Jelenkovic, Reijo Sund, Yoshie Yokoyama, Yoon-Mi Hur, Vilhelmina Ullemar, Catarina Almqvist, Patrik Ke Magnusson, Gonneke Willemsen, Meike Bartels, Catharina Em van Beijsterveldt, Leonie H Bogl, Kirsi H Pietiläinen, Eero Vuoksimaa, Fuling Ji, Feng Ning, Zengchang Pang, Tracy L Nelson, Keith E Whitfield, Esther Rebato, Clare H Llewellyn, Abigail Fisher, Gombojav Bayasgalan, Danshiitsoodol Narandalai, Morten Bjerregaard-Andersen, Henning Beck-Nielsen, Morten Sodemann, Adam D Tarnoki, David L Tarnoki, Syuichi Ooki, Maria A Stazi, Corrado Fagnani, Sonia Brescianini, Lise Dubois, Michel Boivin, Mara Brendgen, Ginette Dionne, Frank Vitaro, Tessa L Cutler, John L Hopper, Robert F Krueger, Matt McGue, Shandell Pahlen, Jeffrey M Craig, Richard Saffery, Claire Ma Haworth, Robert Plomin, Ariel Knafo-Noam, David Mankuta, Lior Abramson, S Alexandra Burt, Kelly L Klump, Robert F Vlietinck, Catherine A Derom, Ruth Jf Loos, Dorret I Boomsma, Thorkild I A Sørensen, Jaakko Kaprio, Karri Silventoinen
It is well established that boys are born heavier and longer than girls, but it remains unclear whether birth size in twins is affected by the sex of their co-twin. We conducted an individual-based pooled analysis of 21 twin cohorts in 15 countries derived from the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins), including 67,850 dizygotic twin individuals. Linear regression analyses showed that boys having a co-twin sister were, on average, 31 g (95% CI 18 to 45) heavier and 0...
April 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29656171/associations-between-birth-size-and-later-height-from-infancy-through-adulthood-an-individual-based-pooled-analysis-of-28-twin-cohorts-participating-in-the-codatwins-project
#2
Aline Jelenkovic, Yoshie Yokoyama, Reijo Sund, Yoon-Mi Hur, Jennifer R Harris, Ingunn Brandt, Thomas Sevenius Nilsen, Syuichi Ooki, Vilhelmina Ullemar, Catarina Almqvist, Patrik K E Magnusson, Kimberly J Saudino, Maria A Stazi, Corrado Fagnani, Sonia Brescianini, Tracy L Nelson, Keith E Whitfield, Ariel Knafo-Noam, David Mankuta, Lior Abramson, Tessa L Cutler, John L Hopper, Clare H Llewellyn, Abigail Fisher, Robin P Corley, Brooke M Huibregtse, Catherine A Derom, Robert F Vlietinck, Morten Bjerregaard-Andersen, Henning Beck-Nielsen, Morten Sodemann, Robert F Krueger, Matt McGue, Shandell Pahlen, S Alexandra Burt, Kelly L Klump, Lise Dubois, Michel Boivin, Mara Brendgen, Ginette Dionne, Frank Vitaro, Gonneke Willemsen, Meike Bartels, Catharina E M van Beijsterveld, Jeffrey M Craig, Richard Saffery, Finn Rasmussen, Per Tynelius, Kauko Heikkilä, Kirsi H Pietiläinen, Gombojav Bayasgalan, Danshiitsoodol Narandalai, Claire M A Haworth, Robert Plomin, Fuling Ji, Feng Ning, Zengchang Pang, Esther Rebato, Adam D Tarnoki, David L Tarnoki, Jina Kim, Jooyeon Lee, Sooji Lee, Joohon Sung, Ruth J F Loos, Dorret I Boomsma, Thorkild I A Sørensen, Jaakko Kaprio, Karri Silventoinen
BACKGROUND: There is evidence that birth size is positively associated with height in later life, but it remains unclear whether this is explained by genetic factors or the intrauterine environment. AIM: To analyze the associations of birth weight, length and ponderal index with height from infancy through adulthood within mono- and dizygotic twin pairs, which provides insights into the role of genetic and environmental individual-specific factors. METHODS: This study is based on the data from 28 twin cohorts in 17 countries...
April 12, 2018: Early Human Development
https://www.readbyqxmd.com/read/29652481/amplified-sensitivity-of-nitrogen-vacancy-spins-in-nanodiamonds-using-all-optical-charge-readout
#3
David A Hopper, Richard R Grote, Samuel M Parks, Lee C Bassett
Nanodiamonds containing nitrogen-vacancy (NV) centers offer a versatile platform for sensing applications spanning from nanomagnetism to in-vivo monitoring of cellular processes. In many cases, however, weak optical signals and poor contrast demand long acquisition times that prevent the measurement of environmental dynamics. Here, we demonstrate the ability to perform fast, high-contrast optical measurements of charge distributions in ensembles of NV centers in nanodiamonds and use the technique to improve the spin readout signal-to-noise ratio through spin-to-charge conversion...
April 13, 2018: ACS Nano
https://www.readbyqxmd.com/read/29652241/bacterial-burden-in-critically-injured-ventilated-patients-does-not-correlate-with-progression-to-pneumonia
#4
Bradley M Dennis, Richard D Betzold, Daryl Patton, Herbert A Hopper, Judith Jenkins, Chris Fonnesbeck, Wonder Drake, Addison K May
BACKGROUND: Ventilator-associated pneumonia (VAP) is common in critically injured patients. The pathogenesis of VAP is not completely understood. We hypothesized that mechanically ventilated trauma patients who develop pneumonia have a progressive increase in pathogen burden over the course of ventilation until a threshold for symptomatic pneumonia is reached, leading to clinical suspicion of VAP. METHODS: Critically injured adults ventilated for more than two successive days were enrolled...
March 13, 2018: Surgical Infections
https://www.readbyqxmd.com/read/29628376/childhood-predictors-of-lung-function-trajectories-and-future-copd-risk-a-prospective-cohort-study-from-the-first-to-the-sixth-decade-of-life
#5
Dinh S Bui, Caroline J Lodge, John A Burgess, Adrian J Lowe, Jennifer Perret, Minh Q Bui, Gayan Bowatte, Lyle Gurrin, David P Johns, Bruce R Thompson, Garun S Hamilton, Peter A Frith, Alan L James, Paul S Thomas, Deborah Jarvis, Cecilie Svanes, Melissa Russell, Stephen C Morrison, Iain Feather, Katrina J Allen, Richard Wood-Baker, John Hopper, Graham G Giles, Michael J Abramson, Eugene H Walters, Melanie C Matheson, Shyamali C Dharmage
BACKGROUND: Lifetime lung function is related to quality of life and longevity. Over the lifespan, individuals follow different lung function trajectories. Identification of these trajectories, their determinants, and outcomes is important, but no study has done this beyond the fourth decade. METHODS: We used six waves of the Tasmanian Longitudinal Health Study (TAHS) to model lung function trajectories measured at 7, 13, 18, 45, 50, and 53 years. We analysed pre-bronchodilator FEV1 z-scores at the six timepoints using group-based trajectory modelling to identify distinct subgroups of individuals whose measurements followed a similar pattern over time...
April 5, 2018: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/29560611/childhood-measles-contributes-to-post-bronchodilator-airflow-obstruction-in-middle-aged-adults-a-cohort-study
#6
Jennifer L Perret, Melanie C Matheson, Lyle C Gurrin, David P Johns, John A Burgess, Bruce R Thompson, Adrian J Lowe, James Markos, Stephen S Morrison, Christine F McDonald, Richard Wood-Baker, Cecilie Svanes, Paul S Thomas, John L Hopper, Graham G Giles, Michael J Abramson, E Haydn Walters, Shyamali C Dharmage
BACKGROUND AND OBJECTIVE: Chronic obstructive pulmonary disease (COPD) has potential origins in childhood but an association between childhood measles and post-bronchodilator (BD) airflow obstruction (AO) has not yet been shown. We investigated whether childhood measles contributed to post-BD AO through interactions with asthma and/or smoking in a non-immunized middle-aged population. METHODS: The population-based Tasmanian Longitudinal Health Study (TAHS) cohort born in 1961 (n = 8583) underwent spirometry in 1968 before immunization was introduced...
March 20, 2018: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/29518222/genome-wide-average-dna-methylation-is-determined-in-utero
#7
Shuai Li, Ee Ming Wong, Pierre-Antoine Dugué, Allan F McRae, Eunae Kim, Ji-Hoon Eric Joo, Tuong L Nguyen, Jennifer Stone, Gillian S Dite, Nicola J Armstrong, Karen A Mather, Anbupalam Thalamuthu, Margaret J Wright, David Ames, Roger L Milne, Jeffrey M Craig, Richard Saffery, Grant W Montgomery, Yun-Mi Song, Joohon Sung, Timothy D Spector, Perminder S Sachdev, Graham G Giles, Melissa C Southey, John L Hopper
Background: Investigating the genetic and environmental causes of variation in genome-wide average DNA methylation (GWAM), a global methylation measure from the HumanMethylation450 array, might give a better understanding of genetic and environmental influences on methylation. Methods: We measured GWAM for 2299 individuals aged 0 to 90 years from seven twin and/or family studies. We estimated familial correlations, modelled correlations with cohabitation history and fitted variance components models for GWAM...
March 6, 2018: International Journal of Epidemiology
https://www.readbyqxmd.com/read/29458155/determining-risk-of-colorectal-cancer-and-starting-age-of-screening-based-on-lifestyle-environmental-and-genetic-factors
#8
Jihyoun Jeon, Mengmeng Du, Robert E Schoen, Michael Hoffmeister, Polly A Newcomb, Sonja I Berndt, Bette Caan, Peter T Campbell, Andrew T Chan, Jenny Chang-Claude, Graham G Giles, Jian Gong, Tabitha A Harrison, Jeroen R Huyghe, Eric J Jacobs, Li Li, Yi Lin, Loïc Le Marchand, John D Potter, Flora Qu, Stephanie A Bien, Niha Zubair, Robert J Macinnis, Daniel D Buchanan, John L Hopper, Yin Cao, Reiko Nishihara, Gad Rennert, Martha L Slattery, Duncan C Thomas, Michael O Woods, Ross L Prentice, Stephen B Gruber, Yingye Zheng, Hermann Brenner, Richard B Hayes, Emily White, Ulrike Peters, Li Hsu
BACKGROUND & AIMS: Guidelines for initiating colorectal cancer (CRC) screening are based on family history but do not consider lifestyle, environmental, or genetic risk factors. We developed models to determine risk of CRC, based on lifestyle and environmental factors and genetic variants, and to identify an optimal age to begin screening. METHODS: We collected data from 9748 CRC cases and 10,590 controls in the Genetics and Epidemiology of Colorectal Cancer Consortium and the Colorectal Transdisciplinary study, from 1992 through 2005...
February 16, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29456763/causal-effect-of-smoking-on-dna-methylation-in-peripheral-blood-a-twin-and-family-study
#9
Shuai Li, Ee Ming Wong, Minh Bui, Tuong L Nguyen, Ji-Hoon Eric Joo, Jennifer Stone, Gillian S Dite, Graham G Giles, Richard Saffery, Melissa C Southey, John L Hopper
Background: Smoking has been reported to be associated with peripheral blood DNA methylation, but the causal aspects of the association have rarely been investigated. We aimed to investigate the association and underlying causation between smoking and blood methylation. Methods: The methylation profile of DNA from the peripheral blood, collected as dried blood spots stored on Guthrie cards, was measured for 479 Australian women including 66 monozygotic twin pairs, 66 dizygotic twin pairs, and 215 sisters of twins from 130 twin families using the Infinium HumanMethylation450K BeadChip array...
2018: Clinical Epigenetics
https://www.readbyqxmd.com/read/29280886/discussion-why-the-p-value-alone-is-not-enough-the-need-for-confidence-intervals-in-plastic-surgery-research
#10
COMMENT
Srinivas M Susarla, Richard A Hopper
No abstract text is available yet for this article.
January 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29168297/single-suture-craniosynostosis-identification-of-rare-variants-in-genes-associated-with-syndromic-forms
#11
Christine M Clarke, Vincent T Fok, Jennifer A Gustafson, Matthew D Smyth, Andrew E Timms, Chris D Frazar, Joshua D Smith, Craig B Birgfeld, Amy Lee, Richard G Ellenbogen, Joseph S Gruss, Richard A Hopper, Michael L Cunningham
We report RNA-Sequencing results on a cohort of patients with single suture craniosynostosis and demonstrate significant enrichment of heterozygous, rare, and damaging variants among key craniosynostosis-related genes. Genetic burden analysis identified a significant increase in damaging variants in ATR, EFNA4, ERF, MEGF8, SCARF2, and TGFBR2. Of 391 participants, 15% were found to have damaging and potentially causal variants in 29 genes. We observed transmission in 96% of the affected individuals, and thus penetrance, epigenetics, and oligogenic factors need to be considered when recommending genetic testing in patients with nonsyndromic craniosynostosis...
February 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29140953/contemporary-management-of-rectal-injuries-at-level-i-trauma-centers-the-results-of-an-american-association-for-the-surgery-of-trauma-multi-institutional-study
#12
Carlos V R Brown, Pedro G Teixeira, Elisa Furay, John P Sharpe, Tashinga Musonza, John Holcomb, Eric Bui, Brandon Bruns, H Andrew Hopper, Michael S Truitt, Clay C Burlew, Morgan Schellenberg, Jack Sava, John VanHorn, Pa-C Brian Eastridge, Alicia M Cross, Richard Vasak, Gary Vercruysse, Eleanor E Curtis, James Haan, Raul Coimbra, Phillip Bohan, Stephen Gale, Peter G Bendix
INTRODUCTION: Rectal injuries have been historically treated with a combination of modalities including direct repair, resection, proximal diversion, presacral drainage, and distal rectal washout. We hypothesized that intraperitoneal rectal injuries may be selectively managed without diversion and the addition of distal rectal washout and presacral drainage in the management of extraperitoneal injuries are not beneficial. METHODS: This is an American Association for the Surgery of Trauma multi-institutional retrospective study from 2004 to 2015 of all patients who sustained a traumatic rectal injury and were admitted to one of the 22 participating centers...
February 2018: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29108917/subcranial-and-orthognathic-surgery-for-obstructive-sleep-apnea-in-achondroplasia
#13
Srinivas M Susarla, Gerhard S Mundinger, Hitesh Kapadia, Mark Fisher, James Smartt, Christopher Derderian, Amir Dorafshar, Richard A Hopper
PURPOSE: Obstructive sleep apnea (OSA) is a common problem in patients with achondroplasia. The purpose of this study was to assess changes in airway volumes following various degrees of facial skeletal advancement. METHODS: This was a retrospective evaluation of patients with achondroplasia who underwent facial skeletal advancement for obstructive sleep apnea. Patients were treated with either an isolated Le Fort III distraction (LF3) or Le Fort II distraction with or without subsequent Le Fort I and bilateral sagittal split osteotomies (LF2 ± LF1/BSSO)...
December 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29099274/causes-of-blood-methylomic-variation-for-middle-aged-women-measured-by-the-humanmethylation450-array
#14
Shuai Li, Ee Ming Wong, Tuong L Nguyen, Ji-Hoon Eric Joo, Jennifer Stone, Gillian S Dite, Graham G Giles, Richard Saffery, Melissa C Southey, John L Hopper
To address the limitations in current classic twin/family research on the genetic and/or environmental causes of human methylomic variation, we measured blood DNA methylation for 479 women (mean age 56 years) including 66 monozygotic (MZ), 66 dizygotic (DZ) twin pairs and 215 sisters of twins, and 11 random technical duplicates using the HumanMethylation450 array. For each methylation site, we estimated the correlation for pairs of duplicates, MZ twins, DZ twins, and siblings, fitted variance component models by assuming the variation is explained by genetic factors, by shared and individual environmental factors, and by independent measurement error, and assessed the best fitting model...
2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/29065043/defining-and-correcting-asymmetry-in-isolated-unilateral-frontosphenoidal-synostosis-differences-in-orbital-shape-facial-scoliosis-and-skullbase-twist-compared-to-unilateral-coronal-synostosis
#15
Gerhard S Mundinger, Rachel Skladman, Tara Wenger, Craig C Birgfeld, Joseph S Gruss, Amy Lee, Richard Ellenbogen, Richard A Hopper
INTRODUCTION: Isolated frontosphenoidal synostosis (FS) is a rare cause of fronto-orbital plagiocephaly that can be challenging to distinguish from isolated unicoronal synostosis (UC). The purpose of this paper is to analyze differences in fronto-orbital dysmorphology between the 2 conditions, to describe approaches for surgical correction, and to report surgical outcomes between FS and UC patients in a casecontrol fashion. METHODS: Patients treated for craniosynostosis over a 12-year period at our institution were retrospectively evaluated under institutional review board approval...
January 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28975875/education-in-twins-and-their-parents-across-birth-cohorts-over-100-years-an-individual-level-pooled-analysis-of-42-twin-cohorts
#16
MULTICENTER STUDY
Karri Silventoinen, Aline Jelenkovic, Antti Latvala, Reijo Sund, Yoshie Yokoyama, Vilhelmina Ullemar, Catarina Almqvist, Catherine A Derom, Robert F Vlietinck, Ruth J F Loos, Christian Kandler, Chika Honda, Fujio Inui, Yoshinori Iwatani, Mikio Watanabe, Esther Rebato, Maria A Stazi, Corrado Fagnani, Sonia Brescianini, Yoon-Mi Hur, Hoe-Uk Jeong, Tessa L Cutler, John L Hopper, Andreas Busjahn, Kimberly J Saudino, Fuling Ji, Feng Ning, Zengchang Pang, Richard J Rose, Markku Koskenvuo, Kauko Heikkilä, Wendy Cozen, Amie E Hwang, Thomas M Mack, Sisira H Siribaddana, Matthew Hotopf, Athula Sumathipala, Fruhling Rijsdijk, Joohon Sung, Jina Kim, Jooyeon Lee, Sooji Lee, Tracy L Nelson, Keith E Whitfield, Qihua Tan, Dongfeng Zhang, Clare H Llewellyn, Abigail Fisher, S Alexandra Burt, Kelly L Klump, Ariel Knafo-Noam, David Mankuta, Lior Abramson, Sarah E Medland, Nicholas G Martin, Grant W Montgomery, Patrik K E Magnusson, Nancy L Pedersen, Anna K Dahl Aslan, Robin P Corley, Brooke M Huibregtse, Sevgi Y Öncel, Fazil Aliev, Robert F Krueger, Matt McGue, Shandell Pahlen, Gonneke Willemsen, Meike Bartels, Catharina E M van Beijsterveldt, Judy L Silberg, Lindon J Eaves, Hermine H Maes, Jennifer R Harris, Ingunn Brandt, Thomas S Nilsen, Finn Rasmussen, Per Tynelius, Laura A Baker, Catherine Tuvblad, Juan R Ordoñana, Juan F Sánchez-Romera, Lucia Colodro-Conde, Margaret Gatz, David A Butler, Paul Lichtenstein, Jack H Goldberg, K Paige Harden, Elliot M Tucker-Drob, Glen E Duncan, Dedra Buchwald, Adam D Tarnoki, David L Tarnoki, Carol E Franz, William S Kremen, Michael J Lyons, José A Maia, Duarte L Freitas, Eric Turkheimer, Thorkild I A Sørensen, Dorret I Boomsma, Jaakko Kaprio
Whether monozygotic (MZ) and dizygotic (DZ) twins differ from each other in a variety of phenotypes is important for genetic twin modeling and for inferences made from twin studies in general. We analyzed whether there were differences in individual, maternal and paternal education between MZ and DZ twins in a large pooled dataset. Information was gathered on individual education for 218,362 adult twins from 27 twin cohorts (53% females; 39% MZ twins), and on maternal and paternal education for 147,315 and 143,056 twins respectively, from 28 twin cohorts (52% females; 38% MZ twins)...
October 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28960316/genome-wide-association-study-and-meta-analysis-in-northern-european-populations-replicate-multiple-colorectal-cancer-risk-loci
#17
Tomas Tanskanen, Linda van den Berg, Niko Välimäki, Mervi Aavikko, Eivind Ness-Jensen, Kristian Hveem, Yvonne Wettergren, Elinor Bexe Lindskog, Neeme Tõnisson, Andres Metspalu, Kaisa Silander, Giulia Orlando, Philip J Law, Sari Tuupanen, Alexandra E Gylfe, Ulrika A Hänninen, Tatiana Cajuso, Johanna Kondelin, Antti-Pekka Sarin, Eero Pukkala, Pekka Jousilahti, Veikko Salomaa, Samuli Ripatti, Aarno Palotie, Heikki Järvinen, Laura Renkonen-Sinisalo, Anna Lepistö, Jan Böhm, Jukka-Pekka Mecklin, Nada A Al-Tassan, Claire Palles, Lynn Martin, Ella Barclay, Albert Tenesa, Susan M Farrington, Maria N Timofeeva, Brian F Meyer, Salma M Wakil, Harry Campbell, Christopher G Smith, Shelley Idziaszczyk, Tim S Maughan, Richard Kaplan, Rachel Kerr, David Kerr, Daniel D Buchanan, Aung K Win, John Hopper, Mark A Jenkins, Polly A Newcomb, Steve Gallinger, David Conti, Fredrick R Schumacher, Graham Casey, Jeremy P Cheadle, Malcolm G Dunlop, Ian P Tomlinson, Richard S Houlston, Kimmo Palin, Lauri A Aaltonen
Genome-wide association studies have been successful in elucidating the genetic basis of colorectal cancer (CRC), but there remains unexplained variability in genetic risk. To identify new risk variants and to confirm reported associations, we conducted a genome-wide association study in 1,701 CRC cases and 14,082 cancer-free controls from the Finnish population. A total of 9,068,015 genetic variants were imputed and tested, and 30 promising variants were studied in additional 11,647 cases and 12,356 controls of European ancestry...
February 1, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28923521/why-do-people-with-mental-distress-have-poor-social-outcomes-four-lessons-from-the-capabilities-approach
#18
Richard Brunner
Macro level data indicate that people experiencing mental distress experience poor health, social and economic outcomes. The sociology of mental health has a series of dominant competing explanations of the mechanisms at personal, social and structural levels that generate these poor outcomes. This article explains the limitations of these approaches and takes up the challenge of Hopper (2007) who in this journal proposed the capabilities approach as a means of normatively reconceptualising the experiences of people with mental distress, with a renewed focus on agency, equality and genuine opportunity...
October 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28829991/pro-inflammatory-fatty-acid-profile-and-colorectal-cancer-risk-a-mendelian-randomisation-analysis
#19
Sebastian May-Wilson, Amit Sud, Philip J Law, Kimmo Palin, Sari Tuupanen, Alexandra Gylfe, Ulrika A Hänninen, Tatiana Cajuso, Tomas Tanskanen, Johanna Kondelin, Eevi Kaasinen, Antti-Pekka Sarin, Johan G Eriksson, Harri Rissanen, Paul Knekt, Eero Pukkala, Pekka Jousilahti, Veikko Salomaa, Samuli Ripatti, Aarno Palotie, Laura Renkonen-Sinisalo, Anna Lepistö, Jan Böhm, Jukka-Pekka Mecklin, Nada A Al-Tassan, Claire Palles, Susan M Farrington, Maria N Timofeeva, Brian F Meyer, Salma M Wakil, Harry Campbell, Christopher G Smith, Shelley Idziaszczyk, Timothy S Maughan, David Fisher, Rachel Kerr, David Kerr, Michael N Passarelli, Jane C Figueiredo, Daniel D Buchanan, Aung K Win, John L Hopper, Mark A Jenkins, Noralane M Lindor, Polly A Newcomb, Steven Gallinger, David Conti, Fred Schumacher, Graham Casey, Lauri A Aaltonen, Jeremy P Cheadle, Ian P Tomlinson, Malcolm G Dunlop, Richard S Houlston
BACKGROUND: While dietary fat has been established as a risk factor for colorectal cancer (CRC), associations between fatty acids (FAs) and CRC have been inconsistent. Using Mendelian randomisation (MR), we sought to evaluate associations between polyunsaturated (PUFA), monounsaturated (MUFA) and saturated FAs (SFAs) and CRC risk. METHODS: We analysed genotype data on 9254 CRC cases and 18,386 controls of European ancestry. Externally weighted polygenic risk scores were generated and used to evaluate associations with CRC per one standard deviation increase in genetically defined plasma FA levels...
October 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28814741/twin-birth-changes-dna-methylation-of-subsequent-siblings
#20
Shuai Li, Eunae Kim, Ee Ming Wong, Ji-Hoon Eric Joo, Tuong L Nguyen, Jennifer Stone, Yun-Mi Song, Louisa B Flander, Richard Saffery, Graham G Giles, Melissa C Southey, Joohon Sung, John L Hopper
We asked if twin birth influences the DNA methylation of subsequent siblings. We measured whole blood methylation using the HumanMethylation450 array for siblings from two twin and family studies in Australia and Korea. We compared the means and correlations in methylation between pairs of siblings born before a twin birth (BT siblings), born on either side of a twin birth (B/AT pairs) and born after a twin birth (AT siblings). For the genome-wide average DNA methylation, the correlation for AT pairs (rAT) was larger than the correlation for BT pairs (rBT) in both studies, and from the meta-analysis, rAT = 0...
August 16, 2017: Scientific Reports
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