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  • Title: [Enhancement of bacillus Calmette-Guerin attachment to the bladder wall: experimental study].
    Author: Shen Z, Ding G, Chen Z.
    Journal: Zhonghua Wai Ke Za Zhi; 2001 Dec; 39(12):951-3. PubMed ID: 16201181.
    Abstract:
    OBJECTIVE: To provide experimentally a scientific basis for enhancement of bacillus Calmette-Guerin (BCG) antineoplastic effect. METHODS: Thirty rabbits were equally divided into five groups (groups A, B, C, D, and E) and the bladder mucosa of every rabbit was injured by electrocautery, cryocautery and incision on the left lateral wall, right lateral wall and posterior wall respectively. Then different drugs were instilled into bladders. Group A: pure phosphate-buffered sodium instillation (PBS); group B: PBS and radiolabeled BCG (3H-BCG) instillation; group C and group D: epsilon-aminocaproic acid or para-aminomethyl benzoic acid and 3H-BCG instillation; group E: heparin and 3H-BCG instillation. After instillation, every injured bladder wall and non-injured wall (anterior wall of bladder) were surgically removed and digested. The quantity of BCG adherence was determined by liquid scintillation counter. RESULTS: The quantity of BCG attached to injured bladder wall was significantly higher than that of non-injured wall (P < 0.001). The mean level of group C or group D was significantly higher than that of group B (P < 0.001) while the mean level of group E was significantly lower than that of group B (P < 0.001). CONCLUSION: For experimental rabbits, intravesical instillation of fibrin clot stabilizer EACA or PAMBA can enhance BCG attachment to the bladder wall while fibrin clot inhibitor heparin inhibits it.
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