Expression of Platelet-Derived Growth Factor Alpha and Beta Receptors in Primary Tumor Cells of Patients with Renal Cell Carcinoma.

0 UROLOGY & NEPHROLOGY
Maria Volkova, Dmitry Khochenkov, Anna Olshanskaya, Yulia Khochenkova, Elyso Solomko, Saida Ashuba, Ilya Tsimafeyeu
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Abstract

Objective: This study aimed to assess the expression of platelet-derived growth factor receptors alpha and beta (PDGFR!/") in primary tumor cells of patients with renal cell carcinoma (RCC). Methods: Platelet-derived growth factor receptors alpha and beta expression was analyzed in RCC specimens from 65 RCC patients (pT1a-T4NanyMany) using immunohis- tochemistry. Expression levels were quantified using the semi-quantitative H-score (HS) method, and correlations between PDGFR!/" expression and tumor characteris- tics were evaluated. The impact of PDGFR!/" expression on patient survival was also examined. Results: Platelet-derived growth factor receptor alpha was expressed in the cytoplasm and membrane of 58.5% of primary RCC cells, with an HS of 62.9 ± 8.4, significantly higher than PDGFR" expression (44.6%; 26.6 ± 5.3; P > .05). Platelet-derived growth factor receptor alpha expression correlated with tumor grade (r = 0.471; P < .0001) and the pN+ category (r = 0.280; P = .024). Platelet-derived growth factor receptor beta expression correlated with tumor grade (r = 0.286; P = .021), venous tumor thrombosis (r = 0.263; P = .034), M+ category (r = 0.305; P = .014), and adrenal metastases (r = 0.306; P = .041). Neither PDGFR! nor PDGFR" expression levels influenced patient survival. Conclusion: Platelet-derived growth factor receptor alpha was more highly expressed in RCC cells compared to PDGFR". Overexpression of PDGFR!/" was associated with higher tumor grade and advanced RCC stages, though it did not affect patient survival.

肾细胞癌患者原发肿瘤细胞中血小板衍生生长因子α和β受体的表达
目的:本研究旨在评估血小板衍生生长因子受体α和β (PDGFR!/”)在肾癌(RCC)患者原发肿瘤细胞中的表达。方法:应用免疫组化方法对65例RCC患者(pT1a-T4NanyMany)的RCC标本中血小板源性生长因子受体α和β的表达进行分析。采用半定量h评分(HS)法定量表达水平,并与PDGFR!评估/”的表达及肿瘤特征。PDGFR的影响!/”表达对患者生存的影响。结果:58.5%的原发性RCC细胞的细胞质和细胞膜中表达血小板衍生生长因子受体α, HS为62.9±8.4,显著高于PDGFR的表达(44.6%;26.6±5.3;P < 0.05)。血小板衍生生长因子受体α表达与肿瘤分级相关(r = 0.471;P < 0.0001)和pN+类别(r = 0.280;P = .024)。血小板衍生生长因子受体β表达与肿瘤分级相关(r = 0.286;P = 0.021),静脉肿瘤血栓形成(r = 0.263;P = 0.034), M+类(r = 0.305;P = 0.014),肾上腺转移(r = 0.306;P = .041)。无论是PDGFR !PDGFR的表达水平不影响患者的生存。结论:血小板衍生生长因子受体α在RCC细胞中的表达高于PDGFR。PDGFR过表达!/”与较高的肿瘤分级和晚期RCC相关,但不影响患者的生存。
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CiteScore
2.60
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