黑龙江畜牧兽医Issue(4)：150-154,5.DOI:10.13881/j.cnki.hljxmsy.2025.03.0078
非洲鸵鸟胸腺内生长抑素的分布特点
Distribution characteristics of somatostatin in the thymus of African ostriches
摘要
Abstract
In order to explore the distribution of somatostatin(SST)in the thymus of African ostriches,6 healthy African ostriches aged 1-day-old,45-day-old,and 90-day-old in rearing period,as well as 6 adult African ostriches aged 334-day-old,were selected.After anesthesia,thymus tissues were collected and processed into paraffin sections.Immunohistochemistry was used to detect SST-positive cells within the thymus.The number of SST-positive cells per unit area was counted,and the distribution patterns and morphological features of these cells were observed specifically in the 90-day-old ostriches.The results showed that SST-positive cells were present in the thymus of African ostriches at all examined ages.With the increase of age,the number of SST-positive cells per unit area in the thymus showed an upward trend.Compared with the 1-day-old group,the number of SST-positive cells per unit area was significantly increased in the 45-day-old,90-day-old,and 334-day-old groups(P<0.05).Although there was a slight increase in the number of SST-positive cells per unit area in the thymus of African ostriches at 90-day-old and 334-day-old of age compared with 45-day-old,the differences were not significant(P>0.05).In 90-day-old ostriches,SST-positive cells were scattered throughout the thymus and primarily concentrated in border area between the thymic cortex and medulla,most SST-postive cells appeared round or conical in shape,while a few SST-postive cells were spindle-shaped or pear-shaped,accompanied by slender cytoplasmic projections.These findings indicated that SST expression in the thymus of African ostriches increased rapidly during the early brooding stage and subsequently stabilizes and then stabilized.SST-positive cells were mainly distributed in the corticomedullary junction region of the thymus.关键词
非洲鸵鸟/胸腺/生长抑素/增龄性变化/免疫组织化学Key words
African ostriches/thymus/somatostatin/age-related changes/immunohistochemistry分类
农业科技引用本文复制引用
何敏,刘志伟,陈敏,张康雷,焦凤超,何书海,李建柱,彭克美..非洲鸵鸟胸腺内生长抑素的分布特点[J].黑龙江畜牧兽医,2026,(4):150-154,5.基金项目
国家自然科学基金项目(31672504) （31672504）
河南省重点研发与推广专项(科技攻关)(232102111043) （科技攻关）
