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タイトル: | Intestinal Rotation and Physiological Umbilical Herniation During the Embryonic Period |
著者: | Ueda, Yui Yamada, Shigehito https://orcid.org/0000-0002-8194-6927 (unconfirmed) Uwabe, Chigako Kose, Katsumi Takakuwa, Tetsuya https://orcid.org/0000-0002-9660-9384 (unconfirmed) |
著者名の別形: | 山田, 重人 高桑, 徹也 |
キーワード: | human embryo intestinal development midgut rotation magnetic resonance imaging three-dimensional reconstruction |
発行日: | Feb-2016 |
出版者: | Blackwell Publishing Inc. |
誌名: | The Anatomical Record |
巻: | 299 |
号: | 2 |
開始ページ: | 197 |
終了ページ: | 206 |
抄録: | Drastic changes occur during the formation of the intestinal loop (IL), including elongation, physiological umbilical herniation (PUH), and midgut rotation. Fifty-four sets of magnetic resonance images of embryos between Carnegie stage (CS) 14 and CS 23 were used to reconstruct embryonic digestive tract in three dimensions in the Amira program. Elongation, PUH, and rotation were quantified in relation to the proximal part of the superior mesenteric artery (SMA), designated as the origin. Up to CS 16, IL rotation was initially observed as a slight deviation of the duodenum and colorectum from the median plane. The PUH was noticeable after CS 17. At CS 18, the IL showed a hairpin-like structure, with the SMA running parallel to the straight part and the cecum located to the left. After CS 19, the IL began to form a complex structure as a result of the rapid growth of the small intestinal portion. By CS 20, the IL starting point had moved from the right cranial region to an area caudal to the origin, though elongation of the duodenum was not conspicuous-this was a change of almost 180° in position. The end of the IL remained in roughly the same place, to the left of and caudal to the origin. Notably, the IL rotated around the origin only during earlier stages and gradually moved away, running transversely after CS 19. The movements of the IL may be explained as the result of differential growth, suggesting that IL rotation is passive. |
著作権等: | This is the accepted version of the following article: [Ueda, Y., Yamada, S., Uwabe, C., Kose, K. and Takakuwa, T. (2016), Intestinal Rotation and Physiological Umbilical Herniation During the Embryonic Period. Anat Rec, 299: 197–206. doi: 10.1002/ar.23296], which has been published in final form at http://dx.doi.org/10.1002/ar.23296. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. The full-text file will be made open to the public on 14 January 2017 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/216681 |
DOI(出版社版): | 10.1002/ar.23296 |
PubMed ID: | 26599074 |
出現コレクション: | 学術雑誌掲載論文等 |
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