| 洪婷婷,刘晨苗,王淑辉,董响贵,任战军.2023.不同年龄与不同时期林麝香腺组织结构观察.动物学杂志,58(5):742-750. |
| 不同年龄与不同时期林麝香腺组织结构观察 |
| The Histostructures of Musk Gland at Different Ages and Periods in Forest Musk Deer |
| 投稿时间：2022-12-12 |
| DOI：10.13859/j.cjz.202305008 |
| 中文关键词: 林麝 香腺 腺泡 组织结构 |
| 英文关键词:Forest Musk Deer, Moschus berezovskii Scent gland Acinus Organizational structure |
| 基金项目:陕西省林科院科技创新计划专项(No. SXLK2020-0207)，国家林业和草原局野生动植物保护项目(No. 2020070212)； |
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| 中文摘要: |
| 本研究旨在探究林麝(Moschus berezovskii)在不同年龄和泌香期与非泌香期香腺的组织结构变化，为深入研究林麝香腺发育和麝香分泌机制提供基础资料。收集6只雄性林麝的香腺组织，包括泌香期2岁龄林麝1例，非泌香期6月龄、2岁龄、4岁龄、6岁龄和8岁龄林麝各1例，采用大体解剖、石蜡切片及常规H.E染色技术，对香腺的形态、组织特征及腺泡直径进行了比较分析。结果显示，林麝香腺位于腹部阴囊与腹脐之间，与阴囊的距离约为4.5 cm。根据功能，香腺可划分为香囊部和腺体部。负责分泌麝香液的腺体组织为肉眼可见的白色颗粒，嵌入腺体部肌层深处并环绕香囊颈分布。6月龄林麝香腺已具有成熟腺体结构，但腺上皮仍处于休止状态；成年林麝香腺的腺泡则增大且数量增多。成年林麝泌香期腺泡被挤压成团状分布，上皮游离面破碎不整，腺泡腔内含有大量明显的颗粒状分泌物与细胞碎屑混合堆积；非泌香期腺泡直径显著大于泌香期(P < 0.01)，2岁林麝腺泡表现为紧密排列的椭球形，而4岁及以上的腺泡则呈不规则团状分布，腔内可见颗粒物，且4岁、6岁和8岁的腺泡直径无显著差异(P > 0.05)。林麝香腺组织结构的变化反映了泌香能力与生长阶段的关系。 |
| 英文摘要: |
| [Objectives] This study aims to investigate the histological changes in the scent glands of Forest Musk Deer (Moschus berezovskii) by comparing gland structures at different ages and secretion periods. [Methods] Scent glands from six male Forest Musk Deer were investigated (Table 1), comprising one 2-year-old specimen during the secreting period and one specimen each of 6-month, 2-year, 4-year, 6-year, and 8-year-old during the non-secreting period. Morphological observations and histological structure comparisons were conducted using gross dissection, paraffin sectioning techniques, and conventional H.E staining methods. One-way ANOVA was employed to assess the variation in glandular follicle diameter among five non-secreting musk deer at different ages. The differences in glandular follicle diameters between the lactating and non-secreting 2-year-old musk were analyzed by independent samples t-test. [Results] Our findings showed that the musk gland of Forest Musk Deer is located between the navel and genitals, 4.5 cm away from the scrotum (Fig. 1a). Functionally, it is divided into sac and gland, with the perfume gland tissue being responsible for musk secretion (Fig. 1b). The glandular tissue, responsible for secreting musk fluid, consists of visible white granules embedded deep within the muscular layer of the glandular region, encircling the neck of the musk sac (Fig. 2). Six-month-old Forest Musk Deer possess a mature glandular structure, but the glandular epithelium remains in a resting state (Fig. 3f). In adulthood, the number of acini increases. During the scenting period, acini are compressed into clusters, and the free surfaces of the epithelium become disrupted and disordered. More pronounced granular secretions and cellular debris are mixed in the cavity (Fig. 3a). Non-secreting acini diameters are significantly larger than those during secreting periods (P < 0.01), with no significant difference observed among 4-year-old, 6-year-old, and 8-year-old acini (P > 0.05) (Table 2). At 2 years old, acini exhibit a tightly arranged elliptical shape (Fig. 3b); at 4 years old or older, acini are compressed into irregular clusters with granules visible in the cavity (Fig. 3c﹣e). [Conclusion] Changes in the glandular structure of Forest Musk Deer reflect the interplay between scent secretion abilities and growth periods. |
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