OBJECTIVES: Superficial bladder cancer (SBC) presents a difficult clinical dilemma at diagnosis as only a small subgroup of patients will subsequently develop invasive disease. Study of cancer biology has found that angiogenesis is central to growth and spread. This study examines the relationship between the angiogenic inhibitory factor Thrombospondin-1 (TSP-1) at initial presentation and subsequent progression of SBC. METHODS: Using immunohistochemistry, 220 cases of SBC were examined for pattern and extent of expression of TSP-1 at initial presentation. RESULTS: TSP-1 was detected in perivascular tissue, at the epithelial-stromal junction, in the stroma and in tumour cells and reduced perivascular TSP-1 staining at presentation was an independent predictive factor for the subsequent development of muscle invasive or metastatic disease. CONCLUSION: This adds further weight to the theory that TSP-1 plays a major part in the biology of bladder cancer possibly through the control of angiogenesis.
OBJECTIVES: Superficial bladder cancer (SBC) presents a difficult clinical dilemma at diagnosis as only a small subgroup of patients will subsequently develop invasive disease. Study of cancer biology has found that angiogenesis is central to growth and spread. This study examines the relationship between the angiogenic inhibitory factor Thrombospondin-1 (TSP-1) at initial presentation and subsequent progression of SBC. METHODS: Using immunohistochemistry, 220 cases of SBC were examined for pattern and extent of expression of TSP-1 at initial presentation. RESULTS:TSP-1 was detected in perivascular tissue, at the epithelial-stromal junction, in the stroma and in tumour cells and reduced perivascular TSP-1 staining at presentation was an independent predictive factor for the subsequent development of muscle invasive or metastatic disease. CONCLUSION: This adds further weight to the theory that TSP-1 plays a major part in the biology of bladder cancer possibly through the control of angiogenesis.
Authors: E Ioachim; M C Michael; M Salmas; K Damala; E Tsanou; M M Michael; V Malamou-Mitsi; N E Stavropoulos Journal: BMC Cancer Date: 2006-05-29 Impact factor: 4.430
Authors: Ricardo L Favaretto; Stênio C Zequi; Renato A R Oliveira; Thiago Santana; Walter H Costa; Isabela W Cunha; Gustavo C Guimarães Journal: Int Braz J Urol Date: 2018 Jan-Feb Impact factor: 1.541
Authors: Aimee M Johnson; Mary J O'Connell; Hiroshi Miyamoto; Jiaoti Huang; Jorge L Yao; Edward M Messing; Jay E Reeder Journal: BMC Urol Date: 2008-04-23 Impact factor: 2.264