PMID- 10074220 OWN - NLM STAT- MEDLINE DCOM- 19990414 LR - 20131121 IS - 1000-6834 (Print) IS - 1000-6834 (Linking) VI - 13 IP - 2 DP - 1997 May TI - [Changes of [Ca2+]i in colorectal cancer cells induced by some chemicals]. PG - 97-101 AB - Changes of [Ca2+]i in CCL229 cells induced by retionoic acid (RA), 1,25(OH)2VD3 and PMA were measured by spectrofluorometry. The effects of endoplasmic reticulum (ER)-specific Ca(2+)-ATPase inhibitor thapsigargin (TG) and IP3 receptor inhibitor heparin on RA-induced changes of [Ca2+]i were observed and the relationship between RA-induced changes of [Ca2+]i and ER was also investigated. The results showed that [Ca2+]i increased markedly in several seconds after treated by RA and 1,25(OH)2VD3. When cells were pretreated with EGTA and verapamil (Ca2+ entry blocker drug), TG could not inhibit RA-stimulated Ca2+ release from intracellular calcium pools and TG could increase [Ca2+]i after pretreated by RA. In addition, heparin could not completely inhibit RA-induced [Ca2+]i increase. The results suggest that RA might stimulate IP3-sensitive pool or IP3-insensitive pool on ER to increase [Ca2+]i, or there might be RA-sensitive calcium pools except ER in cells. FAU - Wang, H AU - Wang H AD - Key Laboratory of Cell Biology Ministry of Public Health of China, China Medical University. FAU - Song, J AU - Song J LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhongguo Ying Yong Sheng Li Xue Za Zhi JT - Zhongguo ying yong sheng li xue za zhi = Zhongguo yingyong shenglixue zazhi = Chinese journal of applied physiology JID - 9426407 RN - 0 (Antineoplastic Agents) RN - 5688UTC01R (Tretinoin) RN - SY7Q814VUP (Calcium) SB - IM MH - Antineoplastic Agents/pharmacology MH - Calcium/*metabolism MH - Cell Transformation, Neoplastic/drug effects MH - Colorectal Neoplasms/*metabolism/pathology MH - Endoplasmic Reticulum/metabolism MH - Humans MH - Tretinoin/pharmacology MH - Tumor Cells, Cultured EDAT- 1997/05/01 00:00 MHDA- 1999/03/13 00:01 CRDT- 1997/05/01 00:00 PHST- 1997/05/01 00:00 [pubmed] PHST- 1999/03/13 00:01 [medline] PHST- 1997/05/01 00:00 [entrez] PST - ppublish SO - Zhongguo Ying Yong Sheng Li Xue Za Zhi. 1997 May;13(2):97-101.