scholarly journals The 2016 Satellite Meeting of the International Society of Twin Studies: An Overview/Tribute to Irving I. Gottesman/Research: MZ Twinning After Single Embryo Transfer; Twin Study of Mononucleosis; Cerebral Injury After Twin-To-Twin Transfusion Syndrome Surgery/Human Interest: Sixteen Twin Pairs Born in a Single Hospital; Death of an Identical Twin Playwright; Twin Themes in Advertising; Conjoined Twins Separated in Saudi Arabia; Murder of One Twin By Her Co-Twin Disproved

2016 ◽  
Vol 19 (5) ◽  
pp. 588-593
Author(s):  
Nancy L. Segal
Keyword(s):  
Saudi Arabia ◽  
Embryo Transfer ◽  
International Society ◽  
Twin Study ◽  
Twin Studies ◽  
Conjoined Twins ◽  
Single Embryo Transfer ◽  
Cerebral Injury ◽  
Identical Twin ◽  
Human Interest

The 2016 Satellite Meeting of the International Society of Twin Studies took place on June 20 in Brisbane, Australia. The host institution was the QIMR Berghofer Medical Research Institute. An overview of selected presentations and activities is provided. This synopsis is followed by a brief tribute to the recent passing of our esteemed colleague, Dr Irving I. Gottesman. Next, there are summaries of research on monozygotic twinning after single embryo transfer, a twin study of mononucleosis susceptibility, cerebral injury following twin-to-twin transfusion syndrome surgery, and a correction and clarification regarding an article by Segal (2016) on the Brazilian Twin Registry. Human interest articles cover a hospital whose 2015 newborns included 16 pairs of twins born in 1 month, the death of an identical twin playwright, twin themes in advertising, conjoined twins separated in Saudi Arabia, and the dismissed charges of the murder of one twin by her co-twin.

Concurrent Schizophrenia-Like Psychosis in Monozygous Twins Suffering from CNS Disorder

1973 ◽  
Vol 122 (571) ◽  
pp. 675-677 ◽  
Author(s):  
Albert West
Keyword(s):  
Twin Study ◽  
Genetic Factor ◽  
Environmental Influences ◽  
Twin Studies ◽  
Identical Twin ◽  
Cerebral Dysfunction ◽  
The Relationship ◽  
Monozygous Twins

Twin studies and investigations into the relationship between schizophrenia-like psychosis and cerebral dysfunction are of considerable interest. Refinement in twin studies has led to less emphasis being placed upon the genetic factor, but the pitfalls surrounding twin techniques, especially with regard to monozygous pairs and the similarity of their environment, have led Penrose (1971) to the opinion that twin study ‘is especially useful, not for genetical researches but in assessing the effects of environmental influences which lead to discordance in identical twin pairs'.

scholarly journals The 14th Congress of the International Society for Twin Studies: Selected Highlights/Research Summaries: Twin Study of Telomere Erosion; Genetics of Monozygotic Twinning; Developmental Dysplasia; Fertility of Mothers of Twins / General Interest: Video Portraits; Separated at Birth; Childhood Actors; Adult Twin Film Villains

2012 ◽  
Vol 15 (5) ◽  
pp. 685-690 ◽  
Author(s):  
Nancy L. Segal
Keyword(s):  
International Society ◽  
Public Interest ◽  
Twin Study ◽  
Final Section ◽  
Twin Studies ◽  
Developmental Dysplasia ◽  
International Congress ◽  
General Interest ◽  
Monozygotic Twinning ◽  
Telomere Erosion

Selected highlights from the 14th International Congress on Twin Studies, set in Florence, Italy in April 2012, are presented. This meeting, which traditionally occurred every three years, is now being held every two years. Reviews of research on the topics of stress and aging (telomere erosion), the genetics of MZ twinning, developmental dysplasia, and fertility of mothers of twins follow. The final section includes several public interest items, namely an exhibit of twins' video portraits, unusual physical look-alikes, and young and adult twin television and film actors.

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 Twin Classics: Research That Always Inspires/Twin Studies: Elder Twin Relationships; Superfecundated Twinning in Chimpanzees; Conjoined Twinning and Embryo Transfer; Reduced Frequency of In Vitro Multiples/Professional and Human Interest: First Identical Twin Renal Transplant; Identical Triplet Wedding; Spanakos Twins: Boxers; Twins in Space; Political Twins

2015 ◽  
Vol 18 (4) ◽  
pp. 478-484 ◽  
Author(s):  
Nancy L. Segal
Keyword(s):  
Renal Transplant ◽  
Embryo Transfer ◽  
Social Relationships ◽  
Twin Pair ◽  
Twin Studies ◽  
Data Interpretation ◽  
Identical Twin ◽  
Reduced Frequency ◽  
Politically Active

Ten classic works in twin research are described. These volumes are rich in data, interpretation, and impact, and contain life history material that adds depth and dimension to the quantitative findings. Next, research on social relationships in older twins, superfecundated twinning in chimpanzees; effects of embryo transfer on conjoined twinning and the reduced frequency of in vitro multiples is reviewed. Finally, there has been considerable public interest surrounding the first identical twin renal transplant, an identical triplet wedding; identical twin boxers, a twin living in space, and a politically active twin pair.

scholarly journals Do Males Affect Twinning Events? A Review of Current Findings/Twin Research Reviews: Monozygotic Twins Discordant for Parkinson’s Disease; Fetal Loss in Twin Pregnancies Following Prenatal Diagnosis; Uterine Rupture and Repair in an Early Twin Pregnancy; Twin Study of Affectionate Communication/Human Interest: Conjoined Twins in a Triplet Set; Identical Twin Nurses Deliver Identical Twins; Identical Twins Discordant for COVID-19 Recovery Course; Identical Twins Pass Away from COVID-19; Archeological Finds of Oldest Identical Twins

2021 ◽  
pp. 1-5
Author(s):  
Nancy L. Segal
Keyword(s):  
Prenatal Diagnosis ◽  
Twin Study ◽  
Uterine Rupture ◽  
Twin Pregnancy ◽  
Fetal Loss ◽  
Monozygotic Twins ◽  
Conjoined Twins ◽  
Identical Twins ◽  
Human Interest ◽  
Twin Pregnancies

Abstract Research into the origins of twinning has focused mostly on contributions from the female side of the family. A review of current findings suggests that possible male contributions to twinning events have been overlooked. This section is followed by brief reviews of twin research concerning monozygotic twins discordant for Parkinson’s disease, fetal loss in twin pregnancies following prenatal diagnosis, uterine rupture and repair in an early twin pregnancy and a twin study of affectionate communication. The concluding portion of this article presents human interest stories involving twins that are both informative and poignant, namely conjoined twins in a triplet set, identical twin nurses who delivered identical twins, identical twins discordant for COVID-19 recovery course, identical twins who passed away from COVID-19 and archeological finds of the oldest identical twins.

scholarly journals In Detail; Research Reviews; Of New Interest

Twin Research ◽  
2003 ◽  
Vol 6 (3) ◽  
pp. 241-247 ◽  
Author(s):  
Nancy L. Segal
Keyword(s):  
Social Support ◽  
Placenta Previa ◽  
Twin Studies ◽  
Reproductive Technologies ◽  
Conjoined Twins ◽  
The Other ◽  
Human Interest ◽  
Opposite Sex ◽  
Social Support Systems ◽  
Brittle Bones

AbstractTwo families with twins — one in which adult DZ twins continue to face the risk of frontotemporal dementia, and the other in which a mother copes with brittle bones in a newborn infant MZ pair — are featured. The nature and progress of the disorders are reviewed and personal perspectives from the twins and other family members are variously provided. Next, four current twin studies are briefly summarized. Topics include sex differences in social support systems, new reproductive technologies, comparative twin-singleton frequencies of placenta previa, and the nature and complications of heterotopic pregnancies. This article concludes with a brief sampling of human interest stories involving twins: a different looking DZ pair, newborn sextuplets, conjoined twins and opposite-sex twin athletes.

scholarly journals Twins and Transsexualism: An Update and a Preview; Research Reviews: Conjoined Twins, Angiographic Lesions, Single Versus Double Embryo Transfer; Headlines: School Placement Legislation, Junior Taekwondo Olympics, Prosthetic Ears, Murder Victim

2007 ◽  
Vol 10 (6) ◽  
pp. 894-897 ◽  
Author(s):  
Nancy L. Segal
Keyword(s):  
Gender Identity ◽  
Embryo Transfer ◽  
Twin Study ◽  
Conjoined Twins ◽  
Behavioral Difference ◽  
New Information ◽  
School Placement ◽  
Mz Twins ◽  
Single Versus ◽  
Double Embryo Transfer

AbstractIn recent years, there has been growing appreciation for the complexity of gender identity. Focusing on monozygotic (MZ) twins discordant for transsexualism can offer clues to events that may trigger this behavioral difference, offering new information about critical underlying factors. An update of twin research in this area is provided, together with a preview of a compelling new film, ‘Red Without Blue.’ Next, twin study findings on the topics of conjoined twinning, angiographic lesions and embryo transfer are provided. This is followed by a survey of newsworthy twins and twin-related events.

Experience of using time-lapse microscopy in IVF and ICSI programs

2020 ◽  
pp. 47-50
Author(s):  
N. V. Saraeva ◽  
N. V. Spiridonova ◽  
M. T. Tugushev ◽  
O. V. Shurygina ◽  
A. I. Sinitsyna
Keyword(s):  
Pregnancy Rate ◽  
Embryo Transfer ◽  
Selection Procedure ◽  
Time Lapse ◽  
Single Embryo Transfer ◽  
Main Group ◽  
Clinical Pregnancy ◽  
Control Group ◽  
Time Lapse Microscopy

In order to increase the pregnancy rate in the assisted reproductive technology, the selection of one embryo with the highest implantation potential it is very important. Time-lapse microscopy (TLM) is a tool for selecting quality embryos for transfer. This study aimed to assess the benefits of single-embryo transfer of autologous oocytes performed on day 5 of embryo incubation in a TLM-equipped system in IVF and ICSI programs. Single-embryo transfer following incubation in a TLM-equipped incubator was performed in 282 patients, who formed the main group; the control group consisted of 461 patients undergoing single-embryo transfer following a traditional culture and embryo selection procedure. We assessed the quality of transferred embryos, the rates of clinical pregnancy and delivery. The groups did not differ in the ratio of IVF and ICSI cycles, average age, and infertility factor. The proportion of excellent quality embryos for transfer was 77.0% in the main group and 65.1% in the control group (p = 0.001). In the subgroup with receiving eight and less oocytes we noted the tendency of receiving more quality embryos in the main group (р = 0.052). In the subgroup of nine and more oocytes the quality of the transferred embryos did not differ between two groups. The clinical pregnancy rate was 60.2% in the main group and 52.9% in the control group (p = 0.057). The delivery rate was 45.0% in the main group and 39.9% in the control group (p > 0.050).

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