PMID- 10101598 OWN - NLM STAT- MEDLINE DCOM- 19990504 LR - 20191103 IS - 0361-090X (Print) IS - 0361-090X (Linking) VI - 23 IP - 2 DP - 1999 TI - Biomarkers in monitoring for efficacy of immunotherapy and chemoprevention of bladder cancer with dimethylsulfoxide. PG - 163-71 AB - This study correlated biomarkers expressed in tumor and epithelial field with clinical response and recurrence. Of 25 bladder cancer patients, 11 received 6 weeks of intravesical Bacille Calmette-Guerin (BCG), and 14 were treated weekly with intravesical dimethylsulfoxide (DMSO) for 4 weeks to further modulate biomarker expression. G-actin, DNA aneuploidy, and p300 tumor antigen were evaluated by quantitative fluorescence image analysis on uroepithelial cells from bladder wash samples prior to and immediately following treatment. Excluding patients who did not respond to BCG (and who had persistently abnormal p300 and DNA markers), recurrence correlated with persistent abnormal G-actin findings. Of patients who were G-actin negative following therapy, only 25% recurred during follow-up in contrast to 67% in patients who were positive (p < 0.03 by Fisher's exact test). The odds ratio for recurrence was 6.00 (95% confidence interval: 1.3-28.6). Cytosolic G-actin levels can be an important intermediate end point marker for chemoprevention. FAU - Hemstreet, G P 3rd AU - Hemstreet GP 3rd AD - Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, USA. FAU - Rao, J AU - Rao J FAU - Hurst, R E AU - Hurst RE FAU - Bonner, R B AU - Bonner RB FAU - Mellott, J E AU - Mellott JE FAU - Rooker, G M AU - Rooker GM LA - eng GR - R01-DK45368/DK/NIDDK NIH HHS/United States GR - R01-OH02647/OH/NIOSH CDC HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - Cancer Detect Prev JT - Cancer detection and prevention JID - 7704778 RN - 0 (Actins) RN - 0 (Antigens, Neoplasm) RN - 0 (BCG Vaccine) RN - 0 (Biomarkers, Tumor) RN - 0 (Cryoprotective Agents) RN - 0 (DNA, Neoplasm) RN - YOW8V9698H (Dimethyl Sulfoxide) SB - IM MH - Actins/metabolism MH - Adult MH - Aged MH - Antigens, Neoplasm/metabolism MH - BCG Vaccine/*therapeutic use MH - Biomarkers, Tumor/*metabolism MH - Chemoprevention MH - Combined Modality Therapy MH - Cryoprotective Agents/*therapeutic use MH - DNA, Neoplasm/analysis MH - Dimethyl Sulfoxide/*therapeutic use MH - Female MH - Humans MH - Image Processing, Computer-Assisted MH - Immunotherapy, Active MH - Male MH - Microscopy, Fluorescence MH - Middle Aged MH - Urinary Bladder Neoplasms/metabolism/*pathology/prevention & control/*therapy EDAT- 1999/04/02 03:02 MHDA- 2001/03/28 10:01 CRDT- 1999/04/02 03:02 PHST- 1999/04/02 03:02 [pubmed] PHST- 2001/03/28 10:01 [medline] PHST- 1999/04/02 03:02 [entrez] AID - 10.1046/j.1525-1500.1999.09917.x [doi] PST - ppublish SO - Cancer Detect Prev. 1999;23(2):163-71. doi: 10.1046/j.1525-1500.1999.09917.x.