Pathology on caudal vertebra of Glyptodon sp. (Xenarthra, Cingulata) from the Upper Pleistocene (Luján Formation) of Buenos Aires province (Argentina)

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-30 DOI:10.1016/j.jsames.2024.105061

Omar Vicencio Campos , Mariano Penín , Claudio Ortega-Muñoz , Gonzalo L. Muñoz , Jonatan Kaluza , Juan A. Escobar , Viviana Buide , Agustín G. Martinelli

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Abstract

The paleontological collection of the Museo Municipal de Ciencias Naturales “Carlos Ameghino” (MCA, Mercedes, Buenos Aires Province, Argentina) includes hundreds of mammalian fossil specimens collected from the Luján Formation (Lujanian Stage/Age), bounded to the Late Pleistocene/Early Holocene. Among the specimens of the MCA collection, a caudal vertebra (MCA-117) of Glyptodon sp. (Xenarthra, Cingulata) with pathologies was identified, which are here characterized in order to perform a diagnosis. The main alterations in the vertebra consist of bone erosion and remodeling in the left transverse process, bone erosion in the vertebral centrum, and deformation in the neural arch affecting the prezygapophyses. The features identified in the transverse process were diagnosed as bone remodeling, alterations previously described for Pleistocene xenarthrans. The erosions observed in the vertebral centrum are comparable to spondylosis, Schmorl's node, intervertebral discopathies, or, alternatively, calcium pyrophosphate deposition disease. Nonetheless, these could potentially manifest as secondary complications arising from spondylosis. Regarding characteristics such as low bone density, it is concluded that they are indicative of modifications due to osteoporosis. The alterations present in the specimen can be compared with bone pathologies recognized in elderly individuals with large body mass.

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布宜诺斯艾利斯省（阿根廷）上更新世（卢扬地层）Glyptodon sp.（Xenarthra, Cingulata）尾椎骨的病理学研究

卡洛斯-阿梅吉诺 "市立自然科学博物馆（MCA，阿根廷布宜诺斯艾利斯省梅塞德斯市）收藏的古生物标本包括数百件从卢扬地层（卢扬阶段/时代）采集的哺乳动物化石标本，属于晚更新世/早全新世。在 MCA 采集的标本中，发现了一个有病变的椎骨（MCA-117），该椎骨是 Xenarthra 和 Cingulata 的椎骨。该椎骨的主要病变包括左侧横突的骨侵蚀和重塑、椎体中心的骨侵蚀以及影响前颧骨的神经弓变形。在横突上发现的特征被诊断为骨重塑，这种改变以前曾在更新世的异种动物身上描述过。在椎体中心观察到的侵蚀与脊椎病、Schmorl 节、椎间盘病或焦磷酸钙沉积症相似。不过，这些病症有可能是脊椎病引起的继发性并发症。关于低骨密度等特征，结论是它们表明骨质疏松症引起的改变。标本中出现的变化可与体重较大的老年人的骨病变进行比较。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.