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https://www.readbyqxmd.com/read/29339123/identical-twins-with-xla-requiring-differing-amounts-of-20-subcutaneous-immunoglobulin-secondary-to-protein-losing-enteropathy
#1
Jennifer Lan, John Eshun, Jay Adam Lieberman
No abstract text is available yet for this article.
January 12, 2018: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/29312661/severe-asthma-and-asthma-copd-overlap-a-double-agent-or-identical-twins
#2
EDITORIAL
Yang Xia, Yuan Cao, Lexin Xia, Wen Li, Huahao Shen
No abstract text is available yet for this article.
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29310692/epigenetic-supersimilarity-of-monozygotic-twin-pairs
#3
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/29276467/chiropractic-management-using-multimodal-therapies-on-2-pediatric-patients-with-constipation
#4
Madhu Mia Iyer, Evangelia Skokos, Denise Piombo
Objective: The purpose of this case report is to describe chiropractic management of 7-month-old male twins who had had constipation since birth. Clinical Features: Identical male twins presented with the chief complaint of constipation and bloating. Both patients were born premature after 29 weeks of gestation and had invasive abdominal surgeries in the right lower quadrant resulting in healed postsurgical scars. Patient A underwent ileostomy for a perforation in his ileum...
December 2017: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/29228364/age-dependent-changes-in-mean-and-variance-of-gene-expression-across-tissues-in-a-twin-cohort
#5
Ana Viñuela, Andrew A Brown, Alfonso Buil, Pei-Chien Tsai, Matthew N Davies, Jordana T Bell, Emmanouil T Dermitzakis, Timothy D Spector, Kerrin S Small
Changes in mean and variance of gene expression with age have consequences for healthy aging and disease development. Age-dependent changes in phenotypic variance have been associated to a decline in regulatory functions leading to increase in disease risk. Here we investigate age-related mean and variance changes in gene expression measured by RNA-seq of fat, skin, whole blood and derived lymphoblastoid cell lines (LCLs) expression from 855 adult female twins. We see evidence of up to 60% of age effects on transcription levels shared across tissues, and 47% of those on splicing...
December 8, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29211317/neurobiology-of-gender-identity-and-sexual-orientation
#6
REVIEW
Charles E Roselli
Sexual identity and sexual orientation are independent components of a person's sexual identity. These dimensions are most often in harmony with each other and with an individual's genital sex, but not always. This review discusses the relationship of sexual identity and sexual orientation to prenatal factors that act to shape the development of the brain and the expression of sexual behaviors in animals and humans. One major influence discussed relates to organizational effects that the early hormone environment exerts on both gender identity and sexual orientation...
December 6, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/29193240/intracranial-fetus-in-fetu-with-numerous-fully-developed-organs
#7
Kuntharee Traisrisilp, Kasemsri Srisupundit, Songkiet Suwansirikul, Thunya Norasetthada, Shanika Kosarat, Theera Tongsong
Fetus in fetu (FIF) is an extremely rare anomaly featuring a monozygotic, diamniotic, parasitic twin, enclosed within its host twin. It is characterized by the presence of vertebrae and well-developed organs in a fetiform mass. Only 18 cases of intracranial FIF have been published. Of them, only five cases were prenatally detected. This study prenatally demonstrated triplet FIFs at 31 weeks within amniotic-like sac in the fetal skull, consisting of multiple well-defined organs. The FIF attached to the host twin via body stalk containing a single main feeding artery and vein, representing umbilical vessels...
November 28, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/29192580/copy-number-variants-and-exome-sequencing-analysis-in-six-pairs-of-chinese-monozygotic-twins-discordant-for-congenital-heart-disease
#8
Yuejuan Xu, Tingting Li, Tian Pu, Ruixue Cao, Fei Long, Sun Chen, Kun Sun, Rang Xu
Congenital heart disease (CHD) is one of the most common birth defects. More than 200 susceptibility loci have been identified for CHDs, yet a large part of the genetic risk factors remain unexplained. Monozygotic (MZ) twins are thought to be completely genetically identical; however, discordant phenotypes have been found in MZ twins. Recent studies have demonstrated genetic differences between MZ twins. We aimed to test whether copy number variants (CNVs) and/or genetic mutation differences play a role in the etiology of CHDs by using single nucleotide polymorphism (SNP) genotyping arrays and whole exome sequencing of twin pairs discordant for CHDs...
December 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/29184627/medical-sequencing-of-de-novo-ectodermal-dysplasia-in-identical-twins-and-evaluation-of-the-potential-eligibility-for-recombinant-eda-therapy
#9
Adriana Modesto, Catherine Ventura, Kathleen Deeley, Deborah Studen-Pavlovich, Alexandre R Vieira
The purpose of this study was to test two 8-year-old identical twins with ectodermal dysplasia (ED) and their unaffected parents for the presence of mutations in the EDA gene with the hypothesis that they might be carrying a de novo mutation in EDA and potentially eligible for recombinant EDA therapy. DNA was extracted using saliva samples obtained from the identical twin girls and both parents. PCR products of Ectodyplasin A (EDA), Ectodysplasin Receptor (EDAR), Ectodysplasin Receptor Associated Death Domain (EDARADD), and Connexin-30 (GJB6) were sequenced by the Sanger method and the results analyzed using a reference sequence...
2017: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/29175600/forensic-dna-methylation-profiling-from-minimal-traces-how-low-can-we-go
#10
Jana Naue, Huub C J Hoefsloot, Ate D Kloosterman, Pernette J Verschure
Analysis of human DNA methylation (DNAm) can provide additional investigative leads in crime cases, e.g. the type of tissue or body fluid, the chronological age of an individual, and differentiation between identical twins. In contrast to the genetic profile, the DNAm level is not the same in every cell. At the single cell level, DNAm represents a binary event at a defined CpG site (methylated versus non-methylated). The DNAm level from a DNA extract however represents the average level of methylation of the CpG of interest of all molecules in the forensic sample...
November 13, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/29174917/non-identical-twins-different-faces-of-cr3-and-cr4-in-myeloid-and-lymphoid-cells-of-mice-and-men
#11
REVIEW
Anna Erdei, Szilvia Lukácsi, Bernadett Mácsik-Valent, Zsuzsa Nagy-Baló, István Kurucz, Zsuzsa Bajtay
Integrins are cell membrane receptors that are involved in essential physiological and serious pathological processes. Their main role is to ensure a closely regulated link between the extracellular matrix and the intracellular cytoskeletal network enabling cells to react to environmental stimuli. Complement receptor type 3 (CR3, αMβ2, CD11b/CD18) and type 4 (CR4, αXβ2, CD11c/CD18) are members of the β2-integrin family expressed on most white blood cells. Both receptors bind multiple ligands like iC3b, ICAM, fibrinogen or LPS...
November 21, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29156094/multiple-transmissions-of-chromosomally-integrated-human-herpesvirus-6-in-one-family
#12
Armin Rashidi, Karam Obeid, Joshua Hill, Erica D Warlick, Daniel J Weisdorf
Chromosomally integrated human herpesvirus-6 (ciHHV-6) can be transmitted from parent to child or via allogeneic hematopoietic cell transplantation (HCT). We report a case of ciHHV-6 transmitted via syngeneic HCT, and vertically across three generations. ciHHV-6 was transmitted from a parent to the patient and her identical twin, and from the patient to her son. The patient underwent syngeneic HCT as rescue from chemotherapy-induced aplasia during which ciHHV-6 was re-transmitted to her, this time from her identical twin...
November 20, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29154643/gender-nonconformity-of-identical-twins-with-discordant-sexual-orientations-evidence-from-childhood-photographs
#13
Tuesday M Watts, Luke Holmes, Jamie Raines, Sheina Orbell, Gerulf Rieger
Childhood gender nonconformity (femininity in males, masculinity in females) predicts a nonstraight (gay, lesbian, or bisexual) sexual orientation in adulthood. In previous work, nonstraight twins reported more childhood gender nonconformity than their genetically identical, but straight, cotwins. However, self-reports could be biased. We therefore assessed gender nonconformity via ratings of photographs from childhood and adulthood. These ratings came from independent observers naïve to study hypotheses. Identical twins with discordant sexual orientations (24 male pairs, 32 female pairs) visibly differed in their gender nonconformity from mid-childhood, with higher levels of gender nonconformity observed in the nonstraight twins...
November 20, 2017: Developmental Psychology
https://www.readbyqxmd.com/read/29154458/epigenetic-mechanisms-of-major-depression-targeting-neuronal-plasticity
#14
REVIEW
Shusaku Uchida, Hirotaka Yamagata, Tomoe Seki, Yoshifumi Watanabe
Major depressive disorder is one of the most common mental illnesses as it affects more than 350 million people globally. Major depressive disorder is etiologically complex and disabling. Genetic factors play a role in the etiology of major depression. However, identical twin studies have shown high rates of discordance, indicating non-genetic mechanisms as well. For instance, stressful life events increase the risk of depression. Environmental stressors also induce stable changes in gene expression within the brain that may lead to maladaptive neuronal plasticity in regions implicated in disease pathogenesis...
November 20, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/29153442/functional-mri-study-to-examine-possible-emotional-connectedness-in-identical-twins-a-case-study
#15
Efstratios Karavasilis, Foteini Christidi, Kalliopi Platoni, Panagiotis Ferentinos, Nikolaos L Kelekis, Efstathios P Efstathopoulos
In the present case study, we investigated possible emotional connectedness between monozygotic twins by means of functional magnetic resonance imaging (fMRI). During the experimental condition, Twin 2 was randomly selected to participate in the neuroimaging protocol while Twin 1 participated in the experimental condition outside the MRI scanner (none of them was aware of the experimental procedure). The experimental condition included two sessions with visual and acoustic stimuli, respectively. Between the two experimental conditions, there was a 2-min break with Twin 1 (i...
October 23, 2017: Explore: the Journal of Science and Healing
https://www.readbyqxmd.com/read/29136105/same-genes-different-brains-neuroanatomical-differences-between-monozygotic-twins-discordant-for-musical-training
#16
Örjan de Manzano, Fredrik Ullén
Numerous cross-sectional and observational longitudinal studies show associations between expertise and regional brain anatomy. However, since these designs confound training with genetic predisposition, the causal role of training remains unclear. Here, we use a discordant monozygotic (identical) twin design to study expertise-dependent effects on neuroanatomy using musical training as model behavior, while essentially controlling for genetic factors and shared environment of upbringing. From a larger cohort of monozygotic twins, we were able to recruit 18 individuals (9 pairs) that were highly discordant for piano practice...
November 9, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29109840/identical-twins-with-crouzon-syndrome-eight-year-follow-up-genetic-considerations-and-operative-management
#17
Mark S Lloyd, Jeffrey G Trost, David Y Khechoyan, Larry H Hollier, Edward P Buchanan
A case report of monozygotic (MZ) twins with Crouzon syndrome was previously published to highlight variables in clinical presentation. The postnatal and epigenetic causes for this variation are not well understood. An 8-year follow-up discusses their pertinent clinic course with consideration of genetic and nongenetic variables. The phenotypic and symptomatic obstacles encountered since their initial assessment are reviewed, and the use of three-dimensional Medical Modeling (Golden, CO) as a preoperative planning strategy is addressed...
December 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/29105599/genotype-based-epigenetic-differences-in-monozygotic-twins-discordant-for-positive-anti-thyroglobulin-autoantibodies
#18
Mikio Watanabe, Yoichi Takenaka, Chika Honda, Osaka Twin Research Group, Yoshinori Iwatani
<b>Background: </b>Epigenetic factors associated with the development of autoimmune diseases are unclear. Monozygotic twin pairs discordant for positive anti-thyroglobulin autoantibodies (TgAb) are useful to examine the epigenetic factors because of their identical genetic background. <b>Purpose: </b>To clarify the discordant epigenetic differences affecting the development of TgAb. <b>Subjects:</b> We selected subjects from 257 Japanese monozygotic twins, recruited from the registry established by the Center for Twin Research at Osaka University...
November 4, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29103407/musical-interests-and-talent-twin-jazz-musicians-and-twin-studies-twin-research-loss-of-a-preterm-multiple-conjoined-twin-conception-depression-in-fathers-of-twins-twin-to-twin-transfusion-syndrome-twin-news-high-achieving-twins-twin-children-of-a-tennis-star
#19
Nancy L Segal
Findings from twin studies of musical interests and talent are reviewed as a backdrop to the lives and careers of twin jazz musicians, Peter and Will Anderson. The Anderson twins exemplify many aspects of twin research, namely their matched musical abilities, shared musical interests, and common career. This overview is followed by reviews of studies and case reports of bereavement in families who have lost a preterm multiple birth infant, the conception of conjoined twins following in vitro fertilization (IVF), depression in fathers of twins, and twin-to-twin transfusion incidence in monochorionic-diamniotic IVF twin pairs...
November 6, 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/29098497/the-impact-of-variation-in-twin-relatedness-on-estimates-of-heritability-and-environmental-influences
#20
Chang Liu, Peter C M Molenaar, Jenae M Neiderhiser
By taking advantage of the natural variation in genetic relatedness among identical (monozygotic: MZ) and fraternal (dizygotic: DZ) twins, twin studies are able to estimate genetic and environmental contributions to complex human behaviors. Recently concerns have been raised about the accuracy of twin studies in light of findings of genetic and epigenetic changes in twins. One of the concerns raised is that MZ twins are not 100% genetically and epigenetically similar because they show variations in their genomes and epigenomes leading to inaccurate estimates of heritability...
November 2, 2017: Behavior Genetics
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