Relationship between parental consanguinity and digit ratios (2D:4D) among Turkish newborns in Sivas.

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Abstrakt

Tytuł:: Relationship between parental consanguinity and digit ratios (2D:4D) among Turkish newborns in Sivas.
Autorzy:: Ertuğrul B; Faculty of Literature, Department of Anthropology, Sivas Cumhuriyet University, Sivas, Turkey.
Özener B; Faculty of Literature, Department of Anthropology, İstanbul University, İstanbul, Turkey.
Źródło:: American journal of human biology : the official journal of the Human Biology Council [Am J Hum Biol] 2020 May; Vol. 32 (3), pp. e23369. Date of Electronic Publication: 2019 Dec 04.
Typ publikacji:: Journal Article; Research Support, Non-U.S. Gov't
Język:: English
Imprint Name(s):: Publication: New York, NY : Wiley-Blackwell
Original Publication: New York, NY : Alan R. Liss, Inc., c1989-
MeSH Terms:: Consanguinity*
Fingers/*anatomy & histology
Female ; Humans ; Infant, Newborn ; Male ; Parents ; Sex Factors ; Turkey
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Entry Date(s):: Date Created: 20191205 Date Completed: 20201123 Latest Revision: 20201123
Update Code:: 20240104
DOI:: 10.1002/ajhb.23369
PMID:: 31801181
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Objectives: The aim of this study was to investigate the effects of parental consanguinity on the 2D:4D digit ratio of newborn infants, whose parents were the first cousins.
Methods: The study included healthy and full-term newborn infants, delivered in a hospital, at the gestational ages from 37 to 41 weeks. A total of 225 newborns and their parents were included in the study. Of these 225 newborns; 100 were inbred and 125 were outbred infants. We used a Vernier caliper to measure the length of the second and fourth digits of the newborns (accuracy: 0.01 mm).
Results: Controlling for education and number of pregnancies, male newborns had lower digit ratios than female newborns, for both left and right hands. There were, moreover, differences between inbred and outbred samples. We determined that inbreeding was related to a reduction in the digit ratios regardless of the side of the hand and the sex of the infant, showing a consistent tendency to appear more masculine. Interaction between marriage type*sex was highly significant.
Conclusions: Parental consanguinity appears to cause fetal masculinization of digit ratios by increasing fetal stress among Turkish newborns.
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