scholarly journals Influence of initial platinum-based chemotherapy on levels of He-4 protein and VEGF-A in primary tumors and metastases from ovarian cancer

2022 ◽  
Vol 20 (6) ◽  
pp. 69-77
Author(s):  
E. M. Frantsiyants ◽  
T. I. Moiseenko ◽  
D. Yu. Yakubova ◽  
N. D. Cheryarina ◽  
A. P. Menshenina ◽  
...  

Introduction. Recently, the he-4 protein has received great attention due to its diagnostic and prognostic abilities in epithelial ovarian cancer. In addition to its diagnostic value, this protein is involved in the pathogenesis of ovarian cancer. Another significant pathogenetic factor is the vascular endothelial growth factor (vegf) which plays a key role in neoangiogenesis. The purpose of the study focused on the analysis of he-4 and vegf-a levels in tissues of ovarian cancer, in healthy contralateral ovaries and in common metastatic tumors in the omentum and peritoneum to determine the place and role of these tumor markers at the stages of carcinogenesis. Material and methods. The study was performed using the abovementioned tissues of 93 patients with t2-3nхm0-1 ovarian cancer. 51 patients underwent surgery followed by chemotherapy. 42 patients received initial neoadjuvant chemotherapy followed by surgery and adjuvant cytostatic therapy. Tissue samples from 17 patients with benign diseases were used as the control for determining the reference values for he-4 and vegf-a. A comparison was made between groups of patients with and without neoadjuvant therapy, as well as in groups of patients depending on the effectiveness of cytostatic treatment. Results. The levels of he-4 in primary and metastatic tissues affected and not affected by cancer were initially elevated in patients with ovarian cancer. The chemotherapy effectiveness directly correlated with the level of he-4 reduction, which did not change or increased in tumors resistant to medical treatment. The level of vegf-a significantly differed in cancer and non-cancer tissues, which indicated its significant pathogenetic effect not “before”, but at the stages of morphological malignization. The dynamics of vegf-a decrease in this study did not depend on the chemotherapy effect. Conclusion. The he-4 marker is a pathognomonic factor in the development of ovarian cancer, preceding morphological signs of malignancy and reflecting the effectiveness of chemotherapy, while vegf-a is most likely a consequence of the cancer development.

2021 ◽  
Author(s):  
Shahan Mamoor

Epithelial ovarian cancer (EOC) is the most lethal gynecologic cancer (1). We performed discovery of genes associated with epithelial ovarian cancer and of the high-grade serous ovarian cancer (HGSC) subtype, using published microarray data (2, 3) to compare global gene expression profiles of normal ovary or fallopian tube with that of primary tumors from women diagnosed with epithelial ovarian cancer or HGSC. We identified the gene encoding vascular endothelial growth factor A, VEGFA, as among the genes whose expression was most different in epithelial ovarian cancer as compared to the normal fallopian tube. VEGFA expression was significantly higher in high-grade serous ovarian tumors relative to normal fallopian tube. VEGFA expression correlated with overall survival in patients with ovarian cancer. These data indicate that expression of VEGFA is perturbed in epithelial ovarian cancers broadly and in ovarian cancers of the HGSC subtype. VEGFA may be relevant to pathways underlying ovarian cancer initiation (transformation) or progression.


Author(s):  
Takao Kamai ◽  
Toshiki Kijima ◽  
Toyonori Tsuzuki ◽  
Akinori Nukui ◽  
Hideyuki Abe ◽  
...  

Abstract Background Adenosine and its adenosine 2A receptors (A2AR) mediate the immunosuppressive mechanism by which tumors escape immunosurveillance and impede anti-tumor immunity within the tumor microenvironment. However, we do not know whether the adenosine pathway (CD39/CD73/A2AR) plays a role in renal cell carcinoma (RCC). Therefore, we studied the role of immunosuppression in RCC by assessing the adenosine pathway in patients with RCC treated with anti-vascular endothelial growth factor (anti-VEGF) agents or immune checkpoints inhibitors (ICIs) or both. Methods In 60 patients with metastatic RCC, we examined the expression of CD39, CD73, A2AR, and programmed cell death 1 ligand 1 (PD-L1) immunohistochemically in surgically resected tumor tissues and studied the clinicopathological characteristics of these patients. Patients were treated by cytoreductive nephrectomy with systemic therapy with anti-VEGF agent or a combination of the ICIs anti-cytotoxic T-lymphocyte-associated antigen 4 (CTLA4) antibody and programmed cell death 1 (PD-1) antibody. Results Increased expression of A2AR in the primary tumors was associated with metastatic profiles. Patients treated with anti–PD-1 antibody in monotherapy, a combination of anti-PD-1 and anti-CTLA4 antibodies, or anti-VEGF agents showed better response and longer overall survival if the primary tumor had higher PD-L1 expression and lower A2AR expression. In Cox multivariate regression analysis, higher expression of A2AR was associated with shorter overall survival. Conclusions Our findings suggest that the expression of A2AR and PD-L1 in the primary tumors in RCC might predict the outcomes of treatment with anti-VEGF agents and ICIs and that the A2AR pathway might be a molecular target for immunotherapy.


2006 ◽  
Vol 107 (Supplement) ◽  
pp. 107S
Author(s):  
John P. Geisler ◽  
Georgiann C. Linnemeier ◽  
Michael C. Wiemann ◽  
John Broshears ◽  
Greg A. Miller ◽  
...  

2015 ◽  
Vol 12 (2) ◽  
pp. 293-300
Author(s):  
Baghdad Science Journal

Epithelial ovarian cancer is the leading cause of cancer deaths from gynecological malignancies. Angiogenesis is considered essential for tumor growth and the development of metastases. VEGF and IL?8 are potent angiostimulatory molecules and their expression has been demonstrated in many solid tumors, including ovarian cancer.VEGF and IL-8 concentrations were measured by ELISA test (HumanVEGF,IL-8). Bioassay ELISA/ US Biological / USA).The median VEGF and IL-8 levels were significantly higher in the sera of ovarian cancer patients than in those with benign tumors and in healthy controls.Pretreatment VEGF and IL-8 serum levels might be regarded as an additional tool in the differentiation of ovarian tumors.


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