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人类个体发育样本中眼眶区域的形态整合

Morphological Integration of the Orbital Region in a Human Ontogenetic Sample.

作者信息

Barbeito-Andrés Jimena, Anzelmo Marisol, Ventrice Fernando, Pucciarelli Héctor M, Sardi Marina L

机构信息

División Antropología, Museo de La Plata, Paseo del Bosque S/N. 1900 La Plata, Buenos Aires, Argentina.

Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.

出版信息

Anat Rec (Hoboken). 2016 Jan;299(1):70-80. doi: 10.1002/ar.23282. Epub 2015 Oct 30.

Abstract

Most studies on craniofacial morphology have focused on adult individuals, but patterns of variation are the outcome of genetic and epigenetic variables that interact throughout ontogeny. Among cranial regions, the orbits exhibit morphological variation and occupy an intermediate position between neurocranial and facial structures. The main objective of this work was to analyze postnatal ontogenetic variation and covariation in the morphology of the orbital region in a cross-sectional series of humans from 0 to 31 years old. Landmarks and semilandmarks were digitized on the orbital rim, as well as in neighboring neural and facial structures. Data were analyzed using geometric morphometrics. Results indicated that orbital size increases during the first years of postnatal life, while the shape of the orbital aperture does not change significantly with age. In general, the pattern and magnitude of shape covariation do not vary markedly during postnatal life although some subtle shifts were documented. Additionally, the shape of the orbital aperture is more related to the anterior neurocranium than to zygomatic structures, even when the allometry is adjusted. Although we expected some influence from postnatal craniofacial growth and from some functional factors, such as mastication, on the development of the orbits, this assumption was not completely supported by our results. As a whole, our findings are in line with the prediction of an early influence of the eyes and extraocular tissues on orbital morphology, and could be interpreted in relation to processes promoting early neural development that coordinately affects orbital traits and the neurocranial skeleton.

摘要

大多数关于颅面形态的研究都集中在成年人身上,但变异模式是在个体发育过程中相互作用的遗传和表观遗传变量的结果。在颅骨区域中,眼眶呈现出形态变异,并且在脑颅和面部结构之间占据中间位置。这项工作的主要目的是分析0至31岁人类横断面系列中眼眶区域形态的出生后个体发育变异和协变。在眼眶边缘以及相邻的神经和面部结构上对地标点和半地标点进行数字化处理。使用几何形态计量学对数据进行分析。结果表明,出生后最初几年眼眶大小增加,而眶口形状随年龄变化不显著。总体而言,尽管记录到一些细微变化,但出生后生活中形状协变的模式和幅度没有明显变化。此外,即使调整了异速生长,眶口形状与前脑颅的关系比与颧骨结构的关系更密切。尽管我们预期出生后颅面生长和一些功能因素(如咀嚼)会对眼眶发育产生一些影响,但我们的结果并未完全支持这一假设。总体而言,我们的发现与眼睛和眼外组织对眼眶形态的早期影响的预测一致,并且可以与促进早期神经发育的过程相关联来解释,这些过程会协同影响眼眶特征和脑颅骨骼。

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