scholarly journals COVID-19: Twin Research in Progress/Twin Research Reviews: Asthmatic and Nonasthmatic Twins; Stanford University Study of Anal Prints; Twin Mammals and COVID-19; Twin Delivery and the Three ‘Rs’/Mixed Media: The Rainman Twins — The Film; Twins Irish Pub; Twins ‘Covid and Corona’; Death of a Surgeon Who Separated Conjoined Twins; Twinco — Twin-Based Supply Company

2020 ◽  
Vol 23 (4) ◽  
pp. 259-263
Author(s):  
Nancy L. Segal
Keyword(s):  
Final Section ◽  
Genetic Factors ◽  
Mixed Media ◽  
Conjoined Twins ◽  
Stanford University ◽  
Twin Research ◽  
Twin Delivery ◽  
The Three Rs

AbstractIt is likely that genetic factors play a role in the susceptibility to, and recovery from, COVID-19. A survey of ongoing twin research could produce findings likely to help in the prevention and management of this pandemic. This survey is followed by a review of research comparing selected features of asthmatic and nonasthmatic twins, links between twin mammals and COVID-19, and relationships between twin delivery and the three ‘Rs’. The final section of this article presents newsworthy twin-related items, some associated with COVID-19. They include a summary of the Rainman Twins film, a study of anal prints, the ‘Twins’ Irish pub, newborn twins ‘Covid and Corona’, the death of a surgeon who separated conjoined twins, and Twinco, a twin-based supply company.

scholarly journals Rare Conjoined Twins / Twin Research Reviews / Twins in the News

2011 ◽  
Vol 14 (5) ◽  
pp. 490-493
Author(s):  
Nancy L. Segal
Keyword(s):  
Brain Structure ◽  
Conjoined Twins ◽  
Twin Research ◽  
Brain Functions ◽  
Parallel Lives ◽  
The Media ◽  
Twin Delivery ◽  
Delivery Options ◽  
The Brain ◽  
A Performance

Conjoined twins are rare, but craniopagus conjoined twins are rarer still. A pair of four-year-old craniopagus female twins with an unusual brain structure may offer new clues as to how the brain functions. This overview is followed by reviews of recent twin research on mothers of twins, twin transfusion syndrome, twin delivery options and twin literary themes. Relevant topics appearing in the media include twin tennis champions, twins' parallel lives and deaths, a new book for families with twins and a performance about a twin musical legend.

scholarly journals Twins Reared Apart: A Forgotten Case / Twin Research Reviews: X-Inactivation and Female Co-Twin Discordance for Hemophilia; Transplantation for Breast Reconstruction; Chimerism and Telomere Attrition in Dizygotic Twins; Divergent Life Histories in Twins Reared Apart / Current Concerns: High ACT-Scoring Twins; Dating a Twin; When Gender Identities Diverge / The Holland Twins

2009 ◽  
Vol 12 (1) ◽  
pp. 123-126 ◽  
Author(s):  
Nancy L. Segal
Keyword(s):  
Breast Reconstruction ◽  
Life Histories ◽  
Final Section ◽  
Monozygotic Twins ◽  
X Inactivation ◽  
Unrelated Family ◽  
Twin Research ◽  
Telomere Attrition ◽  
Current Concerns ◽  
Unrelated Child

AbstractA forgotten story of monozygotic twins reared apart is described. The pair, born in 1941 in Fribourg, Switzerland, were separated due to switch-baby incident in the hospital. This caused one twin to be raised as a singleton by an unrelated family, and the other twin to be raised as a ‘dizygotic’ twin with an unrelated child. This is followed by reviews of recent twin research and case studies of X-inactivation and hemophilia, breast reconstruction, chimerism and life histories. The final section of the article includes human interest pieces on academic twins, dating twins, transsexual twins and athletic twins.

scholarly journals ‘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; Triplet Hockey Stars

2017 ◽  
Vol 20 (3) ◽  
pp. 260-265 ◽  
Author(s):  
Nancy L. Segal
Keyword(s):  
Body Mass Index ◽  
Sleep Quality ◽  
Body Mass ◽  
Final Section ◽  
Twin Studies ◽  
Self Esteem ◽  
Mothers And Fathers ◽  
Twin Research ◽  
Membrane Rupture ◽  
The Media

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. The final section concerns twins, twin studies, and related events in the media, namely: twins born to a sister surrogate, the NASA twin investigation, inspiring African-Cosmopolitan twins in fashion, and triplet Hockey Stars.

Monocephalic Sternopagus Tetrapagus Tetrapus Dicaudatus Monstrosity in a Surti Buffalo: A Case Report

2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Devasee Borakhatariya ◽  
Pravin Kandhani ◽  
P.S. Chikhaliya ◽  
N.B. Manvar
Keyword(s):  
Case Report ◽  
Environmental Conditions ◽  
Genetic Factors ◽  
Conjoined Twins ◽  
Number Of Factors ◽  
Stage Development ◽  
The Common ◽  
Surti Buffalo

Dystocia is the common sequel of foetal monstrosities. Teratologic abnormalities or developmental arrests of the ovum, embryo or foetus may result in death or malformations of the antenatal individual. The defect of conjoined twins is non-inherited teratologic, which arises from a single ovum due to incomplete division during the primitive stage development and is monozygotic. Number of factors being influenced by genetic and environmental conditions may cause development of conjoined twins. Various genetic factors were predicted to be responsible for the failure of the separation of twins after the 13th day of conception (Srivastava et al., 2008). They are most common in cattle but are seen rarely in sheep, pigs, dogs and cats and are exceedingly rare in horses.

Homosexuals who are Twins

1992 ◽  
Vol 160 (3) ◽  
pp. 407-409 ◽  
Author(s):  
Michael King ◽  
Elizabeth McDonald
Keyword(s):  
Sexual Orientation ◽  
Genetic Factors ◽  
Shared Knowledge ◽  
Homosexual Men ◽  
High Likelihood ◽  
Sexual Relations ◽  
Same Sex ◽  
Men And Women ◽  
Twin Research ◽  
High Level

Forty-six homosexual men and women who were twins took part in a study of their sexuality and that of their co-twin. Discordance for sexual orientation in the monozygotic pairs confirmed that genetic factors are insufficient explanation of the development of sexual orientation. There was a high level of shared knowledge of sexual orientation between members of twin pairs, and a relatively high likelihood of sexual relations occurring with same sex co-twins at some time, particularly in monozygotic pairs. The implications of these results for the study of the origins of sexual orientation and for twin research are discussed.

scholarly journals 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; Conjoined Twin Separation; Twin Delivery to a Giant Panda

2017 ◽  
Vol 20 (6) ◽  
pp. 643-648 ◽  
Author(s):  
Nancy L. Segal
Keyword(s):  
Giant Panda ◽  
Case Reports ◽  
Twin Studies ◽  
Conjoined Twins ◽  
Multiple Birth ◽  
Twin Research ◽  
High Achieving ◽  
Twin Children ◽  
Musical Interests

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. Twins highlighted in the media include high-achieving identical female twins with nearly identical academic standing, tennis star Roger Federer's two sets of identical twin children, surgical separation of craniopagus conjoined twins, and the rare delivery of twins to a 23-year-old giant panda.

scholarly journals Tribute to Dr Louis Keith: Twin and Physician Extraordinaire/Twin Research Reports: Influences on Asthma Severity; Chimerism Revisited; DNA Strand Break Repair/Media Reports: Twins Born Apart; Elevated Twin Frequencies; Celebrity Father of Twins; Conjoined Twinning

2014 ◽  
Vol 17 (5) ◽  
pp. 494-497
Author(s):  
Nancy L. Segal
Keyword(s):  
Twin Studies ◽  
Asthma Severity ◽  
Strand Break ◽  
Conjoined Twins ◽  
Factors Affecting ◽  
Twin Research ◽  
Dna Strand Break ◽  
Repair Mechanisms ◽  
Media Reports ◽  
Dna Strand

The International Society for Twin Studies has lost a valued friend and colleague. Dr Louis Keith, Emeritus Professor of Obstetrics and Gynecology at Northwestern University, in Chicago, passed away on Sunday, July 6, 2014. His life and work with twins will be acknowledged at the November 2014 International Twin Congress in Budapest, Hungary. Next, twin research reports on the severity of asthma symptoms, a case of chimerism, and factors affecting DNA breakage and repair mechanisms are reviewed. Media reports cover twins born apart, elevated twin frequencies, a celebrity father of twins, and a family's decision to keep conjoined twins together.

scholarly journals Insights From Twin Research: Conference at Royal Childrens Hospital, Melbourne, Australia / Twin Studies: Timing of Monozygotic Splitting and Commentary; Gestational Diabetes; ICOMBO’S Post-Partum Depression Study; Photographs of Conjoined Twins / Human Interest: Rare Quadruplets; Mistaken Identity on the Soccer Field; Prenatal Laser Surgery on Triplets; Twins Born to Prince and Princess of Monaco

2015 ◽  
Vol 18 (2) ◽  
pp. 218-224 ◽  
Author(s):  
Nancy L. Segal
Keyword(s):  
Gestational Diabetes ◽  
Laser Surgery ◽  
Post Partum ◽  
Twin Studies ◽  
Conjoined Twins ◽  
General Interest ◽  
Twin Research ◽  
Post Partum Depression ◽  
Mistaken Identity ◽  
Soccer Field

Highlights from a conference, ‘Healthier Kids: Insights From Twin Research’, held in Melbourne, Australia on December 5, 2014, are summarized. In addition to informative and exciting presentations and discussions of recent findings, three key themes emerged: (1) results from twin research have important implications for non-twins, (2) researchers from diverse disciplines should be encouraged to participate actively in twin research, and (3) investigators, twins and families need to work more collaboratively. Next, papers and studies concerning the biological bases of monozygotic (MZ) twinning, gestational diabetes and post-partum depression are reviewed. Finally, general interest reports of rare quadruplets, mistaken identity, prenatal laser surgery and a royal twin birth are provided.

scholarly journals Twin Studies of Multiple Myeloma / Research Reviews and News: Critique of Twin Research; Opposite-Sex Twins and Sexual Attraction; Twinning Rates and Assisted Reproductive Technology; Family History of Multiple Implantation / Human Interest: Book Party: Born Together — Reared Apart; Morning Sickness and Twins; Sexuality in Conjoined Twins; Kofi Annan: Opposite-Sex Twin; Switched at Birth

2013 ◽  
Vol 16 (2) ◽  
pp. 645-649
Author(s):  
Nancy L. Segal
Keyword(s):  
Multiple Myeloma ◽  
Assisted Reproductive Technology ◽  
Sexual Attraction ◽  
Twin Studies ◽  
Conjoined Twins ◽  
Reproductive Technology ◽  
Morning Sickness ◽  
Human Interest ◽  
Twin Research ◽  
Opposite Sex

A foundation for studying multiple myeloma, launched by a monozygotic twin, is described. Twin studies of that disease are also examined. A summary of selected research studies and news events follows, with specific reference to a new critique of twin research, sexual attraction in separated opposite-sex twins, twinning rates following assisted reproductive technology and family histories of multiple implantation. Human interest topics cover a gathering of researchers from the Minnesota Study of Twins Reared Apart, morning sickness and twin pregnancy, sexuality in conjoined twins, a famous hidden twin, and a film about switched at birth babies.

scholarly journals Population-Based Research: Breastfeeding Multiple Birth Infants / Twin Research Reviews and News: Perceived Aging in Twins; Separation of Conjoined Twins; School Placement Legislation / Twins in Education, Fashion and Humanitarian Events

2010 ◽  
Vol 13 (2) ◽  
pp. 217-220 ◽  
Author(s):  
Nancy L. Segal
Keyword(s):  
Population Based ◽  
Conjoined Twins ◽  
Fashion Design ◽  
Multiple Birth ◽  
Maternal Factors ◽  
Population Based Study ◽  
Twin Research ◽  
Factors Associated ◽  
School Placement ◽  
Duration Of Breastfeeding

AbstractThe health benefits of breastfeeding are well known. However, less is known about the frequency and duration of breastfeeding in twins. A population-based study of maternal factors associated with the early cessation of breastfeeding in preterm and term twins is reviewed. This is followed by research reviews and news concerning aging in twins, conjoined twin separation and school legislation for multiple birth children. Twins and quadruplets who have distinguished themselves in the areas of education, fashion design and humanitarian efforts are highlighted.

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