在一个自由散居的幼年黑角 (Sapajus nigritus) 中发生的自发表瘤
Carolina Fontana1, Amália Ferronato1, Vinicius Dahm1
1Veterinary Pathology Laboratory, Department of Veterinary Sciences, Federal University of Paraná, Palotina, Paraná, Brazil.
Journal of comparative pathology
|November 16, 2024
概括
这项研究报告了黑角羊 (Sapajus nigritus) 中第一个具有黑色细胞特征的II级尾瘤病例. 这种罕见的大脑瘤导致头水和神经系统缺陷.
科学领域:
- 兽医神经学 兽医神经学
- 比较病理学比较病理学
- 灵长类瘤学
背景情况:
- 非人类灵长类动物的神经疾病的诊断和治疗可能具有挑战性.
- 垂体瘤是来自垂体细胞的瘤,通常在中枢神经系统中发现.
- 大脑瘤中的黑色细胞特征并不常见,特别是在非人类灵长类动物中.
研究的目的:
- 记录和描述黑角羊 (Sapajus nigritus) 中的一种具有黑色细胞特征的新型表瘤病例.
- 为了解野生动物物种中的脑瘤做出贡献.
- 为未来的比较研究提供组织病理学和免疫组织化学数据.
主要方法:
- 临床评估一只年轻的卡普奇因,其表现为动力衰竭和神经缺陷.
- 放射性成像用于评估头骨异常和诊断水头.
- 尸体解剖,组织病理学检查,以及对大脑质量的免疫组织化学分析 (GFAP,胰岛素克拉丁,Fontana-Masson染料).
主要成果:
- 在第三心室区域诊断出具有黑色细胞特征的II级膜瘤,导致显著的水脑.
- 瘤细胞表现出状的圆形形态,表皮层的粉丝状,和棕色的细胞质色素.
- 免疫组织化学证实了瘤细胞对质纤维酸性蛋白质 (GFAP) 呈阳性,对胰岛素核糖蛋白呈阴性.
结论:
- 这是Sapajus.属中首次报告的具有黑色细胞特征的尾瘤.
- 这些发现强调了彻底的组织病理学和免疫组织化学评估对于诊断野生动物罕见瘤的重要性.
- 这种病例扩大了非人类灵长类动物中已知的中枢神经系统瘤的范围.
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