Human shoulder development is adapted to obstetrical constraints-Reference-Cited by-同舟云学术

Human shoulder development is adapted to obstetrical constraints

Published:2022-04-11 Issue:16 Volume:119 Page:
ISSN:0027-8424
Container-title:Proceedings of the National Academy of Sciences
language:en
Short-container-title:Proc. Natl. Acad. Sci. U.S.A.

Author:

Kawada Mikaze¹,Nakatsukasa Masato¹^ORCID,Nishimura Takeshi²^ORCID,Kaneko Akihisa²^ORCID,Ogihara Naomichi³,Yamada Shigehito⁴^ORCID,Coudyzer Walter⁵^ORCID,Zollikofer Christoph P. E.⁶^ORCID,Ponce de León Marcia S.⁷^ORCID,Morimoto Naoki¹^ORCID

Affiliation:

1. Laboratory of Physical Anthropology, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan

2. Primate Research Institute, Kyoto University, 484-8506 Inuyama, Japan

3. Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan

4. Congenital Anomaly Research Center, Kyoto University Graduate School of Medicine, 606-8303 Kyoto, Japan

5. Department of Radiology, University Hospitals, Katholieke Universiteit Leuven, 3000 Leuven, Belgium

6. Anthropological Institute and Museum, University of Zurich, 8057 Zurich, Switzerland

7. Department of Informatics, University of Zurich, 8050 Zurich, Switzerland

Abstract

Significance During human birth, the risk of complications is relatively high because of the comparatively large dimensions of the fetal head and shoulders relative to the maternal birth canal. Here we show that humans exhibit a developmental mode of the shoulders that likely contributes to mitigating obstetrical problems. Human shoulder growth is decelerated before birth but accelerated after birth, which stands in contrast to the more uniform shoulder growth trajectories of chimpanzees and macaques. This indicates that fetal developmental modifications were required during human evolution not only in the head but also in the shoulders to compensate obstetrical constraints.

Funder

MEXT | Japan Society for the Promotion of Science

Publisher

Proceedings of the National Academy of Sciences

Subject

Multidisciplinary

Link

https://pnas.org/doi/pdf/10.1073/pnas.2114935119

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