PMID- 11927004 OWN - NLM STAT- MEDLINE DCOM- 20020620 LR - 20190513 IS - 0910-5050 (Print) IS - 1876-4673 (Electronic) IS - 0910-5050 (Linking) VI - 93 IP - 3 DP - 2002 Mar TI - Induction of apoptosis by sulindac in azoxymethane-induced possible colonic premalignant lesions in rats. PG - 242-6 AB - We have reported that beta-catenin-accumulated crypts (BCAC), which do not have the appearance of aberrant crypt foci (ACF) are possible colonic premalignant lesions in rats. Suppression of the occurrence and advancement of such lesions should have critical relevance to cancer prevention. This study examined whether sulindac, a chemopreventive nonsteroidal anti-inflammatory drug is able to induce apoptosis in such premalignant lesions. At 6 weeks of age, rats groups 1 - 3 were given azoxymethane (AOM) (15 mg/kg-body weight) once weekly for 3 weeks. Two groups were given sulindac in the diet (200 and 400 ppm), starting at 9 weeks of age. The rats were sacrificed at the termination, and the colons were carefully examined. The incidence and crypt multiplicity of BCAC and ACF were significantly less than those of the control group. The effect of sulindac on the expression of BCAC was greater than that on ACF. Exposure to sulindac significantly increased the apoptotic index (terminal deoxynucleotide transferase dUTP nick-end labeling (TUNEL)-positive cells) in BCAC. However, no significant increase of the index was found in the case of ACF. These results suggest that the chemopreventive effect of sulindac in rats is related to the induction of apoptosis in premalignant lesions. Our results also provide additional evidence that BCAC are premalignant lesions in colon carcinogenesis in rodents. FAU - Kuno, Toshiya AU - Kuno T AD - First Department of Pathology, Gifu University School of Medicine, Gifu 500-8705, Japan. FAU - Yamada, Yasuhiro AU - Yamada Y FAU - Hirose, Yoshinobu AU - Hirose Y FAU - Katayama, Masaki AU - Katayama M FAU - Sakata, Keiko AU - Sakata K FAU - Hara, Akira AU - Hara A FAU - Saji, Shigetoyo AU - Saji S FAU - Mori, Hideki AU - Mori H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - Jpn J Cancer Res JT - Japanese journal of cancer research : Gann JID - 8509412 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (Antineoplastic Agents) RN - 0 (Carcinogens) RN - 0 (Ctnnb1 protein, rat) RN - 0 (Cytoskeletal Proteins) RN - 0 (Trans-Activators) RN - 0 (beta Catenin) RN - 184SNS8VUH (Sulindac) RN - 3M4G523W1G (Silver) RN - MO0N1J0SEN (Azoxymethane) SB - IM MH - Animals MH - Anti-Inflammatory Agents, Non-Steroidal/*pharmacology MH - Antineoplastic Agents/pharmacology MH - Apoptosis/*drug effects MH - Azoxymethane/toxicity MH - Carcinogens/toxicity MH - Cell Division MH - Cell Nucleus/metabolism MH - Colonic Neoplasms/metabolism/pathology/*prevention & control MH - Cytoskeletal Proteins MH - Diet MH - In Situ Nick-End Labeling MH - Incidence MH - Male MH - Nucleolus Organizer Region/metabolism MH - Precancerous Conditions/metabolism/pathology/*prevention & control MH - Rats MH - Rats, Inbred F344 MH - Silver/chemistry MH - Sulindac/*pharmacology MH - *Trans-Activators MH - beta Catenin PMC - PMC5926969 EDAT- 2002/04/03 10:00 MHDA- 2002/06/21 10:01 PMCR- 2002/03/01 CRDT- 2002/04/03 10:00 PHST- 2002/04/03 10:00 [pubmed] PHST- 2002/06/21 10:01 [medline] PHST- 2002/04/03 10:00 [entrez] PHST- 2002/03/01 00:00 [pmc-release] AID - CAE242 [pii] AID - 10.1111/j.1349-7006.2002.tb02164.x [doi] PST - ppublish SO - Jpn J Cancer Res. 2002 Mar;93(3):242-6. doi: 10.1111/j.1349-7006.2002.tb02164.x.