Immunohistochemical profile of cell cycle control, proliferation and differentiation proteins of the pulmonary atypical alveolar epithelium with COVID-19-induced diffuse alveolar damage as compared to pulmonary [lepidic-growth] adenocarcinoma
Voprosy Onkologii
; 68(5):598-604, 2022.
Article
in Russian
| EMBASE | ID: covidwho-2239304
ABSTRACT
We aim aim to compare immunophenotypic charac-teritics of atypical epithelium (AE) with COVID-19-induced diffuse alveolar damage (DAD) and pulmonary lepidic-growth adenocarcinoma, accounting for cell cycle control, proliferation and differentiation]. Methods. We examined pulmonary tissue specimens from twenty-four fatal cases of CO VID-19-induced acute respiratory damage syndrome confirmed by autopsy (Group 1) and four cases of pulmonary lepidic-growth adenocarcinoma (Group 2). Perpendicular dimensions of 10 nuclei were measured on the H&E slides, means of their sums of products (SPNM) were calculated. We have used p53, Ki67, pi6, p63 antibodies for immunohistochemical staining in each case. We evaluate co¬lour intensity, rate of stained cells of AE and the product of these parameters. We evaluated separately Nuclear and cyto-plasmic staining (couple) and only cytoplasmic staining (cyt) for pi6 expression. We measured proliferative index only at KI-67 stained slides. U-test and Spearman rank correlation test were used for statistical analysis. Results. Expression of p63 was higher in group 1 (p=0.001), while pi6 was more frequently expressed in group 2 (p=0.002). We have found no statistically significant differences (p>0.1) in the p53 and Ki67 expression. Group 1 showed There was negative correlation between the number of days from onset of symptoms and the following variables Ki67 (r=M).587, p=0.003);SPNM (r 0.406, p=0.049). Conclusion. The present study has shown heterogeneity in levels of cell cycle control expression, proliferation and differentiation of atypical epithelium in the pulmonary lep-idic-growth adenocarcinoma and CO VID-19-induced diffuse alveolar damage.
article; autopsy; cancer growth; case report; cell cycle regulation; clinical article; coronavirus disease 2019; diffuse alveolar damage; fatality; human; human tissue; immunohistochemistry; lung adenocarcinoma; lung alveolus epithelium; lung parenchyma; proliferation index; protein expression; regeneration; endogenous compound; protein p53
Full text:
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Collection:
Databases of international organizations
Database:
EMBASE
Language:
Russian
Journal:
Voprosy Onkologii
Year:
2022
Document Type:
Article
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