scholarly journals A Pair of Meetings: Twins (UCLA Center for Society and Genetics) and the 13th International Society for Twin Studies Congress (ISTS, Seoul, South Korea) / Twin Research Reviews: Female Sexuality; Maternal Age and Multiple Pregnancy Success / In the News: In Separate Wombs; Big Twinning Rates in Small Towns; School Enrollment Policy Hurts Twins; Establishing Paternity of Twins; Stars Are Born

2010 ◽  
Vol 13 (5) ◽  
pp. 508-513 ◽  
Author(s):  
Nancy L. Segal
Keyword(s):  
South Korea ◽  
International Society ◽  
Maternal Age ◽  
Female Sexuality ◽  
Multiple Pregnancy ◽  
Twin Studies ◽  
Small Towns ◽  
School Enrollment ◽  
Twin Research

scholarly journals Symposium in Honor of Irving I. Gottesman (December 29, 1930–June 29, 2016)

2018 ◽  
Vol 21 (4) ◽  
pp. 281-284
Author(s):  
Nancy L. Segal
Keyword(s):  
International Society ◽  
Human Genetics ◽  
Scientific Research ◽  
Twin Studies ◽  
Special Issue ◽  
Twin Research ◽  
Profound Influence ◽  
To Come ◽  
Personal Reflections ◽  
Academic Positions

The June 2016 death of our esteemed colleague, Dr Irving I. Gottesman, was felt as an extreme loss at so many levels by colleagues, students, friends, and family across the globe. Irv's stellar contributions to the field of twin research will continue to be remembered and cited for many years to come. In commemoration of his life and work, I organized a symposium at the 16th meeting of the International Society for Twin Studies, held in Madrid, Spain, November 16–18, 2017. The panelists included mostly former students, as well as colleagues, who presented their scientific research and personal remarks reflecting Irv's profound influence in shaping their lives and careers. A chronology of Irv's academic positions and honors is included in the introduction to this special issue of Twin Research and Human Genetics, followed by brief sketches of the panel participants; their scholarly papers and personal reflections follow.

New Frontiers of Gemellology

1987 ◽  
Vol 36 (1) ◽  
pp. 1-4
Author(s):  
Luigi Gedda
Keyword(s):  
International Society ◽  
Biomedical Research ◽  
Presidential Address ◽  
Twin Studies ◽  
Twin Research ◽  
The Future ◽  
The Right

The good result of this congress (the fifth of the series), in terms of quality of papers and number of participants, proves we were on the right track when in 1974 we founded the International Society for Twin Studies, and even more proves that the interest in gemellology is increasing.I wish to thank our many colleagues who contributed to the promotion, construction and success of this field of biomedical research, and particularly Gordon Allen, Ian MacGillivray, Walter Nance, Paolo Parisi, and of course Aldur Eriksson.For my part, I would like to emphasize that going from the title “Study of Twins” given to my book in 1951 to the word gemellology placed in the title of our quarterly Acta Geneticae Medicae et Gemellologiae in 1952, I wanted to affirm: first, that the study of twins is a branch of modern genetics; second, that the study of twins represents a “logos,” that is, a subject composed of acquired concepts, of constant phenomena and specific methods of research on twins in normality, in pathology and in population. With this word, now also adopted by Professor Nance in his Presidential Address, “Introduction to Gemellology,” twin research has become an identified field of science.In order that the Amsterdam Congress may be as fruitful as the previous ones, I believe it useful to look out of the window of the future with you to see some roads which could be new frontiers of gemellology.

scholarly journals Unrelated ART Twins / Tribute: Dr Robert Derom / Twin Research Reviews: Transfusion Syndrome; Discordant MZ-Twin Method / Matched Talents: Tennis Twins: (Mike and Bob Bryan; Sonchai and Sonchat Ratiwatana); Television Twins: (Ellen and Lynda Kahn)

2009 ◽  
Vol 12 (6) ◽  
pp. 619-622
Author(s):  
Nancy L. Segal
Keyword(s):  
International Society ◽  
Final Section ◽  
Twin Studies ◽  
Behavioral Research ◽  
Tennis Players ◽  
Twin Research ◽  
Twin Method ◽  
New Research ◽  
Mz Twins

AbstractAunique case of artificially conceived twins is described. The infants involved are unrelated to one another, as well as to the mother who carried them. The question of whether these individuals meet scientific criteria for being twins is considered, as is the issue of whether their parents are really parents of twins. Next, the International Society for Twin Studies acknowledges the life and work of its late esteemed colleague, Dr Robert Derom. His professional accomplishments on behalf of twins and twin research will be remembered, as will his helpfulness and generosity to fellow investigators. This tribute to Dr Derom is followed by reviews of new research on the pathophysiology of the twin transfusion syndrome and the use of discordant MZ twins (co-twin control) in behavioral research. The final section provides a review of the athletic talents of two sets of MZ twin tennis players, and the creative skills of a set of MZ twin designers.

scholarly journals Oliver Sacks: Our Correspondence About Twins/Twin Research: Vanishing Twins Syndrome; Discordant Sex in MZ Twins; Pregnancy Outcomes in IVF and ICSI Conceived Twins/Print and Media: Superfetated Twins; Twins Discordant for Smoking; Twins in Fashion; Yale University Twin Hockey Players; Conjoined Twin–Visiting Professor

2017 ◽  
Vol 20 (4) ◽  
pp. 363-369
Author(s):  
Nancy L. Segal
Keyword(s):  
New York ◽  
Pregnancy Outcomes ◽  
Twin Pair ◽  
Multiple Pregnancy ◽  
New York Times ◽  
Yale University ◽  
Twin Research ◽  
Hockey Players ◽  
Vanishing Twin Syndrome ◽  
Mz Twins

The late neurologist and author, Oliver Sacks, published an insightful 1986 review of Marjorie Wallace's book, The Silent Twins, in the New York Times. Taking exception to his assertion about Sir Francis Galton, I wrote a letter to the Times’ editor. The letter was unpublished, but it brought a wonderful response from Sacks himself that is reproduced and examined. Next, brief reviews of twin research concerning the vanishing twin syndrome (VTS), discordant sex in a monozygotic (MZ) twin pair, and multiple pregnancy outcomes from assisted reproductive technology (ART) are presented. This section is followed by popular coverage of superfetated twins, smoking-discordant co-twins, twins in fashion, Yale University twin hockey players, and a visiting professor who was a conjoined twin.

Conclusions to Part II

2020 ◽  
pp. 127-132
Author(s):  
Barry Buzan ◽  
Evelyn Goh
Keyword(s):  
Nineteenth Century ◽  
South Korea ◽  
International Society ◽  
Northeast Asia ◽  
Local Responses ◽  
The Way

During the nineteenth century, China, Japan, and Korea shared a common crisis defined by a dual encounter, not only with an overwhelmingly powerful West, but also with the profoundly disruptive idea set of modernity. This dual encounter profoundly threatened the traditional forms of society and relationship in Northeast Asia (NEA). That the local responses to this were fraught, differentiated, and conflictual is hardly surprising. What is perhaps more surprising is how shared, and in many ways similar, their responses to the Western challenge have become. Japan led the way, but South Korea, Taiwan, and increasingly China have now caught up, and NEA’s place in global international society is largely restored. From an outsider perspective, there is more that unites these countries in both the Asian tragedy of the nineteenth and early-mid twentieth centuries, and the new Asia emerging over the last several decades, than divides them. As noted in ...

scholarly journals The Value of Twins for Health and Medical Research: A Third of a Century of Progress

2020 ◽  
Vol 23 (1) ◽  
pp. 8-15 ◽  
Author(s):  
Jeffrey M. Craig ◽  
Lucas Calais-Ferreira ◽  
Mark P. Umstad ◽  
Dedra Buchwald
Keyword(s):  
Genetic Variation ◽  
Medical Research ◽  
Twin Study ◽  
Environmental Influences ◽  
Twin Studies ◽  
Twin Research ◽  
Study Designs ◽  
Genetic Contributions

AbstractIn 1984, Hrubec and Robinette published what was arguably the first review of the role of twins in medical research. The authors acknowledged a growing distinction between two categories of twin studies: those aimed at assessing genetic contributions to disease and those aimed at assessing environmental contributions while controlling for genetic variation. They concluded with a brief section on recently founded twin registries that had begun to provide unprecedented access to twins for medical research. Here we offer an overview of the twin research that, in our estimation, best represents the field has progress since 1984. We start by summarizing what we know about twinning. We then focus on the value of twin study designs to differentiate between genetic and environmental influences on health and on emerging applications of twins in multiple areas of medical research. We finish by describing how twin registries and networks are accelerating twin research worldwide.

Dizygotic to monozygotic twinning ratio at The Royal Women's Hospital, Melbourn 1947–1997, compared with Australian national twinning incidence

Twin Research ◽  
2000 ◽  
Vol 3 (1) ◽  
pp. 12-16
Author(s):  
Stephen Tong
Keyword(s):  
Retrospective Study ◽  
Prospective Studies ◽  
Maternal Age ◽  
Close Agreement ◽  
Significant Decline ◽  
Asian Countries ◽  
Twin Research ◽  
National Statistics ◽  
Monozygotic Twinning ◽  
Human Fertility

AbstractThe incidence of dizygotic (Dz) twinning can be used as an index of natural human fertility. A retrospective study was done at The Royal Women's Hospital, Australia, to see whether the dizygotic to monozygotic (Mz) twinning ratio from one hospital can accurately reflect the national incidence of Dz twinning. The yearly twinning incidence from 1947–1997 was expressed as a Dz:Mz ratio, standardised for maternal age and plotted against previously published national statistics. The proportion of mothers born in Asia (of both singleton and multiples) between 1983–1997 was analysed to see whether different racial mixes might influence twinning trends. There were 5275 twins born of known sex and maternal age between 1947–1997. The agestandardised Dz:Mz ratio increased non-significantly from 1.39 in 1947 to 2.29 in 1953 (P = 0.08), underwent a significant decline to 0.73 in 1977, then remained stable until 1997 (P > 0.05). The same trends were also apparent when the data was pooled into 2-year groups with the increase from 1947/48–1953/54 becoming highly significant (P < 0.009). These trends observed in the hospital-based data were in close agreement with those found in the national statistics, with the exception of a rise in 1977–1982 only reflected in the Australia-wide data. In 1993, 2.6% of mothers were born in Asian countries; by 1997, this had risen to 10.6%. We found that the Dz:Mz ratio from one hospital closely reflects national twinning trends. Prospective studies must account for race, and would need around 200–300 twin pairs per year to minimise fluctuations of the ratio. Twin Research (2000) 3, 12–16.

scholarly journals Twin Research: Exploring female sexuality

2005 ◽  
Vol 13 (6) ◽  
pp. 696-697
Author(s):  
Dorret I Boomsma
Keyword(s):  
Female Sexuality ◽  
Twin Research
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