Proliferation to apoptosis ratio in cutaneous connective tissue cells during mechanical injury healing in an experiment
- 作者: Berezovskaya T.I.1, Odintsova I.A.1
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隶属关系:
- Kirov Military Medical Academy
- 期: 卷 163, 编号 4 (2025)
- 页面: 327-338
- 栏目: Original Study Articles
- URL: https://bakhtiniada.ru/1026-3543/article/view/349037
- DOI: https://doi.org/10.17816/morph.677204
- EDN: https://elibrary.ru/KVVQXI
- ID: 349037
如何引用文章
详细
论证。创伤愈合过程中一个重要方面是损伤区细胞增殖与凋亡的平衡。特别值得关注的是坏死周边区的再生性组织发生特征,尤其是真皮和皮下组织等结缔组织层。该区域含有上皮和结缔组织的形成层样细胞成分,由此实现再生,而细胞凋亡过程则具有特征性特点。免疫组化方法常用于研究不同形成层潜能组织中的组织发生过程,包括增殖和细胞凋亡。然而,在再生不同阶段如何选择能够反映增殖与凋亡关系的标志物,仍是一个亟待解决的问题。
目的。在机械创伤不同愈合阶段,对皮肤结缔组织细胞的增殖与凋亡进行免疫组化评估,并计算二者的比率。
方法。开展了一项单中心、全面性、对照、随机、非盲的实验研究。作为研究材料,选取Wistar大鼠股部皮肤样本,这些样本来自在造成机械性损伤(深切口创伤)后的不同愈合阶段。动物分为9组:对照组为完整皮肤大鼠(n = 3);实验组为损伤后12 h、24 h、2、3、6、10、15和25天(各组n = 3)。制备皮肤切片用于组织学和免疫组化研究。以磷酸化组蛋白H3作为增殖标志物,以p53蛋白和半胱天冬酶-3作为凋亡标志物。
结果。在所有实验组的大鼠皮肤结缔组织中均检测到表达磷酸化组蛋白H3、半胱天冬酶-3和p53的免疫阳性细胞。确定了细胞增殖指数,并分析了在不同再生阶段完整皮肤和坏死周边区促凋亡蛋白的动态表达。在此基础上计算了增殖–凋亡比值及其数值指标(指数),用于表征这两种过程。结果显示,增殖–凋亡指数在完整皮肤和再生的后期阶段,当增殖过程占优势时达到最高值,而在炎症期和坏死期,当凋亡过程占优势时则处于最低水平。
结论。本研究首次将磷酸化组蛋白H3的免疫组化检测应用于皮肤创伤再生研究。该增殖标志物在增殖细胞中表达,与凋亡标志物结合,可用于评估不同再生阶段的增殖–凋亡比率。
作者简介
Tatyana I. Berezovskaya
Kirov Military Medical Academy
编辑信件的主要联系方式.
Email: lapi2@yandex.ru
ORCID iD: 0009-0009-1591-9152
SPIN 代码: 2508-7042
俄罗斯联邦, Saint Petersburg
Irina A. Odintsova
Kirov Military Medical Academy
Email: odintsova-irina@mail.ru
ORCID iD: 0000-0002-0143-7402
SPIN 代码: 1523-8394
Dr. Sci. (Medicine), Professor
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