Expression and prognostic significance of vascular endothelial growth factor‐A (VEGF‐A) and its receptor in canine prostate cancer

The Prostate ◽  
2021 ◽  
Author(s):  
Antonio Fernando Leis‐Filho ◽  
Patricia deFaria Lainetti ◽  
Priscila Emiko Kobayashi ◽  
Chiara Palmieri ◽  
Renée Laufer Amorim ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Vascular Endothelial Growth Factor ◽  
Growth Factor ◽  
Prognostic Significance ◽  
Vascular Endothelial ◽  
Endothelial Growth Factor

Long-Term Follow-Up of Immunocytochemical Analysis of Vascular Endothelial Growth Factor (VEGF), and Its Two Receptors, VEGF-R1 (Flt-1) and VEGF-R2 (Flk-1/KDR), in Oesophagogastric Cancer

2013 ◽  
Vol 28 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Ronan T. Gray ◽  
Mark E. O'Donnell ◽  
Perry Maxwell ◽  
James A. McGuigan ◽  
Gary M. Spence
Keyword(s):  
Vascular Endothelial Growth Factor ◽  
Growth Factor ◽  
Epithelial Cells ◽  
Lymphovascular Invasion ◽  
Prognostic Significance ◽  
Vascular Endothelial ◽  
Immunocytochemical Analysis ◽  
Endothelial Growth Factor ◽  
Oesophagogastric Cancer

Background The prognostic significance of immunocytochemical analysis of tumour vascular endothelial growth factor (VEGF) and its 2 receptors, VEGF-R1 and VEGF-R2, remains incompletely investigated in patients with oesophagogastric cancer. Methods Patients undergoing surgical resection were prospectively recruited between February 1999 and August 2000. Immunocytochemical analysis of VEGF, VEGF-R1 (Flt-1) and VEGF-R2 (Flk-1/KDR) was undertaken using validated techniques. Patients were followed up over a 10-year period using the Northern Ireland Cancer Registry. Results Sixty-one patients were recruited (male=45, 73.8%) with a median age of 66.0 years (range 39-83). Forty-seven (77.0%) adenocarcinomas and 14 (23.0%) squamous cell carcinomas were resected. UICC tumour staging was: stage I=14.7%, II=24.6%, III=54.1% and IV=6.6%. VEGF, VEGF-R1 and VEGF-R2 were over-expressed in tumour epithelial cells. VEGF-R2 expression was decreased in the presence of lymphovascular invasion and higher tumour grade. The 10-year survival rate was 19.7% (n=12) with a median follow-up of 808 (IQR 356-2313) days. On univariate analysis only lymphovascular invasion significantly predicted poor prognosis in this cohort (p=0.05). Conclusion VEGF, VEGF-R1 and VEGF-R2 were over-expressed in tumour epithelial cells. VEGF-R2 expression was decreased in the presence of more aggressive pathological variables. Larger studies are required to assess the prognostic significance of these biomarkers in oesophagogastric cancer.

scholarly journals Prognostic significance of cellular vascular endothelial growth factor (VEGF) expression in the course of chronic myeloid leukaemia

2009 ◽  
Vol 137 (7-8) ◽  
pp. 379-383 ◽  
Author(s):  
Ana Vidovic ◽  
Gradimir Jankovic ◽  
Dragica Tomin ◽  
Maja Perunicic-Jovanovic ◽  
Irena Djunic ◽  
...  
Keyword(s):  
Vascular Endothelial Growth Factor ◽  
Growth Factor ◽  
Chronic Myeloid Leukaemia ◽  
Myeloid Leukaemia ◽  
Prognostic Significance ◽  
Chronic Phase ◽  
Vascular Endothelial ◽  
Vegf Expression ◽  
Endothelial Growth Factor ◽  
The Impact

Introduction. Increased angiogenesis in bone marrow is one of the characteristics of chronic myeloid leukaemia (CML), a clonal myeloproliferative disorder that expresses a chimeric bcr/abl protein. Vascular endothelial growth factor (VEGF) is one of the most potent and a specific regulator of angiogenesis which principally targets endothelial cells and regulates several of their functions, including mitogenesis, permeability and migration. The impact of elevated VEGF expression on the course of chronic myeloid leukaemia is unknown. Objective. The aim of this study was the follow-up of VEGF expression during the course of CML. Methods. We studied VEGF expression of 85 CML patients (median age 50 years, range 16-75 years). At the commencement of the study, 29 patients were in chronic phase (CP), 25 in an accelerated phase (AP), and 31 in the blast crisis (BC). The temporal expression (percentage positivity per 1000 analysed cells) VEGF proteins over the course of CML were studied using the immunohistochemical technique utilizing relevant monoclonal antibodies. It was correlated with the laboratory (Hb, WBC and platelet counts, and the percentage of blasts) and clinical parameters (organomegaly, duration of CP, AP, and BC) of disease progression. Results. The expression of VEGF protein was most pronounced in AP (ANOVA, p=0.033). The level of VEGF expression correlated inversely with the degree of splenomegaly (Pearson, r=-0.400, p=0.011). High expression of VEGF correlated with a shorter overall survival (log rank, p=0.042). Conclusion. Immunohistochemically confirmed significance of the expression of VEGF in dependence of the CML stage could be of clinical importance in deciding on the timing therapy. These data suggest that VEGF plays a role in the biology of CML and that VEGF inhibitors should be investigated in CML.

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