Development of hypobranchial muscles with special reference to the evolution of the vertebrate neck.
Development of hypobranchial muscles with special reference to the evolution of the vertebrate neck.
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DOI：
10.1186/s40851-018-0087-x
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发表时间：
2018
影响因子：
2.7
通讯作者：
Kuratani S
中科院分区：
文献类型：
--
作者：
Adachi N;Pascual-Anaya J;Hirai T;Higuchi S;Kuratani S
现存的脊椎动物包括圆口类（七鳃鳗和八目鳗）和冠颚类（有颌脊椎动物），但这两类之间存在各种解剖差异。在有颌动物中最明显的是颈部，它占据了头部和躯干之间的界面区域，包括颅骨的枕部、肩带、兜状肌和下鳃肌（HBM）。其中，HBM起源于枕骨体节，形成腹侧咽和颈部肌肉系统的有颚类。圆口动物在腹咽部也有HBM，但缺乏其他颈部元素，包括枕骨区，肩带和兜状肌。这些解剖学上的差异提出了关于脊椎动物颈部进化的问题。在这项研究中，我们观察到的发展HBMs作为两组之间的比较的基础，并表明，头躯干接口的安排在有颌动物是不同的七鳃鳗。我们的比较分析表明，虽然HBM前体最初通过两组心包的外侧，心包相对于咽弓的相对位置在两者之间不同，导致不同的轨迹的HBM在gnathostomes和七鳃鳗。我们认为，异位重排的早期胚胎成分，包括心包和咽弓，可能发挥了根本性的作用，在建立gnathostome HBMs，这也将作为颈部形成的基础，在有颌脊椎动物谱系。本文的在线版本（10.1186/s40851-018-0087-x）包含补充材料，可供授权用户使用。
The extant vertebrates include cyclostomes (lamprey and hagfish) and crown gnathostomes (jawed vertebrates), but there are various anatomical disparities between these two groups. Conspicuous in the gnathostomes is the neck, which occupies the interfacial domain between the head and trunk, including the occipital part of the cranium, the shoulder girdle, and the cucullaris and hypobranchial muscles (HBMs). Of these, HBMs originate from occipital somites to form the ventral pharyngeal and neck musculature in gnathostomes. Cyclostomes also have HBMs on the ventral pharynx, but lack the other neck elements, including the occipital region, the pectoral girdle, and cucullaris muscles. These anatomical differences raise questions about the evolution of the neck in vertebrates. In this study, we observed developing HBMs as a basis for comparison between the two groups and show that the arrangement of the head–trunk interface in gnathostomes is distinct from that of lampreys. Our comparative analyses reveal that, although HBM precursors initially pass through the lateral side of the pericardium in both groups, the relative positions of the pericardium withrespect to the pharyngeal arches differ between the two, resulting in diverse trajectories of HBMs in gnathostomes and lampreys. We suggest that a heterotopic rearrangement of early embryonic components, including the pericardium and pharyngeal arches, may have played a fundamental role in establishing the gnathostome HBMs, which would also have served as the basis for neck formation in the jawed vertebrate lineage. The online version of this article (10.1186/s40851-018-0087-x) contains supplementary material, which is available to authorized users.
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DOI：
10.1093/bioinformatics/btp348
发表时间：
2009-08-01
期刊：
Bioinformatics (Oxford, England)
影响因子：
--
作者：
Capella-Gutiérrez S;Silla-Martínez JM;Gabaldón T
通讯作者：
Gabaldón T
影响因子：
2.9
作者：
Adachi, Noritaka;Kuratani, Shigeru
通讯作者：
Kuratani, Shigeru
DOI：
10.1007/s004290050268
发表时间：
1999-08-01
期刊：
ANATOMY AND EMBRYOLOGY
影响因子：
--
作者：
Huang, RJ;Zhi, QX;Patel, K
通讯作者：
Patel, K
影响因子：
1.5
作者：
Hunter, RM
通讯作者：
Hunter, RM
影响因子：
56.9
作者：
Depew, MJ;Lufkin, T;Rubenstein, JLR
通讯作者：
Rubenstein, JLR