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https://www.readbyqxmd.com/read/28444780/fetal-brain-injury-in-complicated-monochorionic-pregnancies-diagnostic-yield-of-prenatal-mri-following-surveillance-ultrasound-and-influence-on-prognostic-counselling
#1
Alice Robinson, Mark Teoh, Andrew Edwards, Michael Fahey, Stacy Goergen
OBJECTIVE: To determine the additional diagnostic information provided by prenatal (fetal) magnetic resonance imaging (pMRI) following tertiary ultrasound (US) for fetal cranial abnormalities in complicated monochorionic gestations (cMCGs) METHODS: Women with cMCGs complicated by twin - twin transfusion syndrome (TTTS), co-twin demise (CD), selective intrauterine growth restriction (sIUGR), and / or twin anemia - polycythemia sequence (TAPS) who were referred for pMRI after tertiary US were included...
April 26, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28439093/gene-expression-profile-of-subcutaneous-adipose-tissue-in-bmi-discordant-monozygotic-twin-pairs-unravels-molecular-and-clinical-changes-associated-with-sub-types-of-obesity
#2
M Muniandy, S Heinonen, H Yki-Järvinen, A Hakkarainen, J Lundbom, N Lundbom, J Kaprio, A Rissanen, M Ollikainen, K H Pietiläinen
BACKGROUND: Subcutaneous adipose tissue (SAT) undergoes major changes in obesity, but little is known about the whole-genome scale patterns of these changes or about their variation between different obesity subgroups. We sought to compare how transcriptomics profiles in SAT differ between monozygotic (MZ) co-twins who are discordant for body mass index (BMI), whether the profiles vary between twin pairs and whether the variation can be linked to clinical characteristics. METHODS: We analyzed the transcriptomics (Affymetrix U133 Plus 2...
April 25, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28436347/familiality-and-heritability-of-fatigue-in-an-australian-twin-sample
#3
Elizabeth C Corfield, Nicholas G Martin, Dale R Nyholt
Familial factors have previously been implicated in the etiology of fatigue, of which a significant proportion is likely attributable to genetic influences. However, family studies have primarily focused on chronic fatigue syndrome, while univariate twin studies have investigated broader fatigue phenotypes. The results for similar fatigue phenotypes vary between studies, particularly with regard to sex-specific contributions to the heritability of the traits. Therefore, the current study aims to investigate the familiality and sex-specific effects of fatigue experienced over the past few weeks in an older Australian population of 660 monozygotic (MZ) twin pairs, 190 MZ singleton twins, 593 dizygotic (DZ) twin pairs, and 365 DZ singleton twins...
April 24, 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28397623/differences-in-neural-and-cognitive-response-to-emotional-faces-in-middle-aged-dizygotic-twins-at-familial-risk-of-depression
#4
K W Miskowiak, A M B Svendsen, C J Harmer, R Elliott, J Macoveanu, H R Siebner, L V Kessing, M Vinberg
BACKGROUND: Negative bias and aberrant neural processing of emotional faces are trait-marks of depression but findings in healthy high-risk groups are conflicting. METHODS: Healthy middle-aged dizygotic twins (N = 42) underwent functional magnetic resonance imaging (fMRI): 22 twins had a co-twin history of depression (high-risk) and 20 were without co-twin history of depression (low-risk). During fMRI, participants viewed fearful and happy faces while performing a gender discrimination task...
April 11, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28382888/placental-restriction-in-multi-fetal-pregnancies-and-between-twin-differences-in-size-at-birth-alter-neonatal-feeding-behaviour-in-the-sheep
#5
R F Peter, J Gugusheff, A L Wooldridge, K L Gatford, B S Muhlhausler
Most individuals whose growth was restricted before birth undergo accelerated or catch-up neonatal growth. This is an independent risk factor for later metabolic disease, but the underlying mechanisms are poorly understood. This study aimed to test the hypothesis that natural and experimentally induced in utero growth restriction increase neonatal appetite and milk intake. Control (CON) and placentally restricted (PR) ewes carrying multiple fetuses delivered naturally at term. Outcomes were compared between CON (n=14) and PR (n=12) progeny and within twin lamb pairs...
April 6, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28378228/inflammatory-processes-and-schizophrenia-two-independent-lines-of-evidence-from-a-study-of-twins-discordant-and-concordant-for-schizophrenic-disorders
#6
Silke Braun, René Bridler, Norbert Müller, Markus J Schwarz, Erich Seifritz, Matthias Weisbrod, Alexandra Zgraggen, Hans H Stassen
The concept of twin concordance involves quantifying the resemblance between co-twins in an "objective" and reproducible way. Yet, quantifying resemblance in the case of complex psychiatric traits like schizophrenic disorders leads to methodological problems, as the yes-no dichotomy of diagnostic schemata does not allow one to assess between-subject differences in psychopathology patterns sufficiently accurately. Therefore, we relied on a multidimensional, quantitative concordance measure that provided a high resolution and differentiation when assessing the resemblance of psychopathology patterns...
April 4, 2017: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/28369107/mapping-the-association-between-back-pain-and-type-2-diabetes-a-cross-sectional-and-longitudinal-study-of-adult-spanish-twins
#7
Amabile Dario, Manuela Ferreira, Kathryn Refshauge, Alison Harmer, Juan Sánchez-Romera, Francisco Pérez-Riquelme, Ligia Cisneros, Juan Ordoñana, Paulo Ferreira
BACKGROUND: Back pain and type 2 diabetes often co-occur, resulting in greater impact on people's health and complexity in their care. Plausible causal mechanisms for this association have been proposed, yet the nature of the link remains unclear. We therefore explored the direction of the association between type 2 diabetes and chronic back pain in twins, controlling for genetics and early environmental confounding. METHODS: 2,096 and 1,098 twins were included in the cross-sectional and longitudinal analyses, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28364472/transcriptional-signatures-of-sleep-duration-discordance-in-monozygotic-twins
#8
N F Watson, D Buchwald, J J Delrow, W A Altemeier, M V Vitiello, A I Pack, M Bamshad, C Noonan, S A Gharib
Introduction: Habitual short sleep duration is associated with adverse metabolic, cardiovascular, and inflammatory effects. Co-twin study methodologies account for familial (eg, genetics and shared environmental) confounding, allowing assessment of subtle environmental effects, such as the effect of habitual short sleep duration on gene expression. Therefore, we investigated gene expression in monozygotic twins discordant for actigraphically phenotyped habitual sleep duration. Methods: Eleven healthy monozygotic twin pairs (82% female; mean age 42...
January 1, 2017: Sleep
https://www.readbyqxmd.com/read/28347391/-biracial-looking-twins-a-new-twin-type-twin-research-twins-with-cystic-teratomas-sleep-quality-and-body-mass-index-previable-membrane-rupture-print-and-online-reports-twins-born-to-a-sister-surrogate-nasa-twin-study-african-cosmopolitan-twin-fashion-inspirations
#9
Nancy L Segal
Dizygotic (DZ) co-twins born to mothers and fathers from different racial or ethnic backgrounds often resemble one parent much more than the other. As such, these pairs comprise a unique subset of twins for investigating how others' responses to their different looks may affect their personalities and self-esteem. This article describes some of these twin pairs and some challenges of raising them, and suggests ways they may be used in research. Next, recent twin research on cystic teratomas, relations between sleep quality and body mass index, and previable membrane rupture is described...
March 28, 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28343600/comparison-of-late-mortality-among-twins-versus-singletons-with-congenital-heart-defects
#10
Anne Maria Herskind, Lisbeth Aagaard Larsen, Dorthe Almind Pedersen, Kaare Christensen
In 2014, in the United States, nearly 7% of newborns were twins. Congenital heart defects (CHDs) are more frequent in both monozygotic and dizygotic twins than in singletons. Still, the longer-term prognosis for CHD twins is unknown. Here we assess the mortality pattern for CHD twins up to age 36 years and compare it with that for non-CHD twins, non-CHD co-twins, and CHD singletons. We identified all twins and a 5% random sample of all singletons born in Denmark from 1977 to 2009 by linking Danish national population and health registers...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28322877/neighborhood-walkability-moderates-the-association-between-low-back-pain-and-physical-activity-a-co-twin-control-study
#11
J R Zadro, D Shirley, M B Pinheiro, A Bauman, G E Duncan, P H Ferreira
The aim of this study was to investigate whether neighborhood walkability moderates the association between low back pain (LBP) and physical activity (PA), using a co-twin design to control for genetics and shared environmental factors. A cross-sectional analysis was performed on 10,228 twins from the Washington State Twin Registry with available data on LBP from recruitment surveys between 2009 and 2013. LBP within the past 3months was our exposure variable. Our outcome variables were sufficient moderate or vigorous-intensity PA (MVPA, defined as at least 75min of vigorous-intensity PA, or 150min of moderate-intensity PA per week), and walking (≥150min per week)...
March 18, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/28314387/twin-pregnancy-complicated-by-esophageal-atresia-duodenal-atresia-gastric-perforation-and-hypoplastic-left-heart-structures-in-one-twin-a-case-report-and-review-of-the-literature
#12
Mohamad K Abou Chaar, Mariana L Meyers, Bethany D Tucker, Henry L Galan, Kenneth W Liechty, Timothy M Crombleholme, Ahmed I Marwan
BACKGROUND: The antenatal diagnosis of a combined esophageal atresia without tracheoesophageal fistula and duodenal atresia with or without gastric perforation is a rare occurrence. These diagnoses are difficult and can be suspected on ultrasound by nonspecific findings including a small stomach and polyhydramnios. Fetal magnetic resonance imaging adds significant anatomical detail and can aid in the diagnosis of these complicated cases. Upon an extensive literature review, there are no reports documenting these combined findings in a twin pregnancy...
March 18, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28267634/chronic-low-back-pain-and-the-risk-of-depression-or-anxiety-symptoms-insights-from-a-longitudinal-twin-study
#13
Matt Fernandez, Lucia Colodro-Conde, Jan Hartvigsen, Manuela L Ferreira, Kathryn M Refshauge, Marina B Pinheiro, Juan R Ordoñana, Paulo H Ferreira
BACKGROUND CONTEXT: Pain is commonly associated with symptoms of depression or anxiety, although this relationship is considered bidirectional. There is limited knowledge regarding causal relationships. PURPOSE: This study aims to investigate whether chronic low back pain (LBP) increases the risk of depression or anxiety symptoms, after adjusting for shared familial factors. STUDY DESIGN: This is a longitudinal, genetically informative study design from the Murcia Twin Registry in Spain...
March 4, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28217238/fetus-in-fetu-case-report-and-brief-review-of-literature-on-embryologic-origin-clinical-presentation-imaging-and-differential-diagnosis
#14
Suhas Aithal Sitharama, Bibekanand Jindal, Mrudula Kumari Vuriti, Bikash Kumar Naredi, Sriram Krishnamurthy, Deepak Barathi Subramania
BACKGROUND: Fetus in fetu (FIF) is a rare entity in which a malformed diamniotic monochorionic parasitic fetal twin develops inside a normal co-twin's body, most commonly in the abdominal cavity. FIF is differentiated from the teratoma by the presence of vertebral column often with an appropriate arrangement of other organs or limbs around it. CASE REPORT: A two-and-a-half-year-old girl presented with a painless abdominal swelling in the right hypochondrium. On imaging, a heterogenous soft tissue mass with internal calcific densities was noted in the retroperitoneum...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28193312/leukocyte-and-skeletal-muscle-telomere-length-and-body-composition-in-monozygotic-twin-pairs-discordant-for-long-term-hormone-replacement-therapy
#15
Elina Sillanpää, Paula Niskala, Eija K Laakkonen, Elodie Ponsot, Markku Alén, Jaakko Kaprio, Fawzi Kadi, Vuokko Kovanen, Sarianna Sipilä
Estrogen-based hormone replacement therapy (HRT) may be associated with deceleration of cellular aging. We investigated whether long-term HRT has effects on leukocyte (LTL) or mean and minimum skeletal muscle telomere length (SMTL) in a design that controls for genotype and childhood environment. Associations between telomeres, body composition, and physical performance were also examined. Eleven monozygotic twin pairs (age 57.6 ± 1.8 years) discordant for HRT were studied. Mean duration of HRT use was 7.3 ± 3...
February 14, 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28191586/attention-deficit-hyperactivity-disorder-symptoms-and-low-educational-achievement-evidence-supporting-a-causal-hypothesis
#16
Eveline L de Zeeuw, Catharina E M van Beijsterveldt, Erik A Ehli, Eco J C de Geus, Dorret I Boomsma
Attention Deficit Hyperactivity Disorder (ADHD) and educational achievement are negatively associated in children. Here we test the hypothesis that there is a direct causal effect of ADHD on educational achievement. The causal effect is tested in a genetically sensitive design to exclude the possibility of confounding by a third factor (e.g. genetic pleiotropy) and by comparing educational achievement and secondary school career in children with ADHD who take or do not take methylphenidate. Data on ADHD symptoms, educational achievement and methylphenidate usage were available in a primary school sample of ~10,000 12-year-old twins from the Netherlands Twin Register...
February 13, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28163210/are-people-with-chronic-low-back-pain-meeting-the-physical-activity-guidelines-a-co-twin-control-study
#17
Joshua Robert Zadro, Debra Shirley, Anita Amorim, Francisco Pérez-Riquelme, Juan R Ordoñana, Paulo H Ferreira
BACKGROUND: Despite a large amount of research investigating physical activity (PA) levels in people with chronic low back pain (LBP), no study has investigated whether people with chronic LBP are meeting the World Health Organization (WHO) PA guidelines. Furthermore, with genetics and the early shared environment substantially influencing the presence of LBP and PA engagement, these factors could confound the association between LBP and PA and need to be controlled for. PURPOSE: This study aimed to investigate the association between chronic LBP and meeting the PA guidelines, while controlling for the effects of genetics and early shared environment...
February 2, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28150444/the-influence-of-chorionicity-and-gestational-age-at-single-fetal-loss-on-the-risk-of-preterm-birth-in-twin-pregnancies-analysis-of-the-stork-multiple-pregnancy-cohort
#18
Francesco D'Antonio, Basky Thilaganathan, Tiran Dias, Asma Khalil
BACKGROUND: Single intrauterine death (sIUD) in twin pregnancies is associated with a significant risk of co-twin demise and preterm birth (PTB), especially in monochorionic (MC) twins. However, it is yet to be established whether the gestational age at loss may influence the pregnancy outcome. The aim of this study was to explore the risk of PTB according to the gestational age at the diagnosis of sIUD. METHODS: A cohort study of all twin pregnancies from a large regional network of 9 hospitals over a ten-year period...
February 2, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28140706/risk-factors-for-brain-damage-among-preterm-twins
#19
Irit Schushan-Eisen, Ayala Maayan-Metzger, Ram Mazkereth, Leah Leibovitch, Tzipora Strauss
AIM: To evaluate the perinatal and postnatal risk factors for various brain pathologies among preterm twins. METHODS: Retrospective data of 104 twin pairs of which one of the siblings had evidence of abnormal head ultrasound (HUS) and its co-twin with normal HUS served as control. RESULTS: Abnormal HUS consisted of periventricular echodensities among 69 infants, intraventricular hemorrhage among 28 infants, cystic periventricular leukomalacia among 10 infants, and other parenchymal brain pathologies among 5 infants...
February 21, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28130150/familial-risk-and-heritability-of-colorectal-cancer-in-the-nordic-twin-study-of-cancer
#20
Rebecca E Graff, Sören Möller, Michael N Passarelli, John S Witte, Axel Skytthe, Kaare Christensen, Qihua Tan, Hans-Olov Adami, Kamila Czene, Jennifer R Harris, Eero Pukkala, Jaakko Kaprio, Edward Giovannucci, Lorelei A Mucci, Jacob B Hjelmborg
BACKGROUND & AIMS: We analyzed data from twins to determine how much the familial risk of colorectal cancer can be attributed to genetic factors vs environment. We also examined whether heritability is distinct for colon vs rectal cancer, given evidence of distinct etiologies. METHODS: Our data set included 39,990 monozygotic and 61,443 same-sex dizygotic twins from the Nordic Twin Study of Cancer. We compared each cancer's risk in twins of affected co-twins relative to the cohort risk (familial risk ratio [FRR])...
January 24, 2017: Clinical Gastroenterology and Hepatology
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