PMID- 23925942 OWN - NLM STAT- MEDLINE DCOM- 20141114 LR - 20140319 IS - 1477-0903 (Electronic) IS - 0960-3271 (Linking) VI - 33 IP - 4 DP - 2014 Apr TI - Effects of chromium picolinate on the viability of chick embryo fibroblast. PG - 403-13 LID - 10.1177/0960327113499042 [doi] AB - Chromium picolinate (CrPic), which is used as a nutritional supplement and to treat type 2 diabetes, has gained much attention because of its cytotoxicity. This study evaluated the effects of CrPic on the viability of the chick embryo fibroblast (CEF) using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, morphological detection, and flow cytometry. The results show that lower concentrations of CrPic (8 and 16 muM) did not damage CEF viability (p > 0.05). However, higher CrPic concentrations (400 and 600 muM) indicated a highly significant effect on the production of intracellular reactive oxygen species, alteration of mitochondrial membrane potential, intracellular calcium ion concentration, and the apoptosis rate (p < 0.01), contrary to lower CrPic concentrations (8 and 16 muM) and control group. Moreover, apoptotic morphological changes induced by these processes in CEF were confirmed using Hoechst 33258 staining. Cell death induced by higher concentrations of CrPic was caused by an apoptotic and a necrotic mechanism, whereas the main mechanism of oxidative stress-induced mitochondrial dysfunction was apoptotic death. FAU - Bai, Y AU - Bai Y AD - 1College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an, China. FAU - Zhao, X AU - Zhao X FAU - Qi, C AU - Qi C FAU - Wang, L AU - Wang L FAU - Cheng, Z AU - Cheng Z FAU - Liu, M AU - Liu M FAU - Liu, J AU - Liu J FAU - Yang, D AU - Yang D FAU - Wang, S AU - Wang S FAU - Chai, T AU - Chai T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130807 PL - England TA - Hum Exp Toxicol JT - Human & experimental toxicology JID - 9004560 RN - 0 (Picolinic Acids) RN - 0 (Reactive Oxygen Species) RN - QZV2W997JQ (picolinic acid) RN - SY7Q814VUP (Calcium) SB - IM MH - Animals MH - Calcium/metabolism MH - Cell Survival/*drug effects MH - Chick Embryo MH - Fibroblasts/*drug effects/metabolism MH - Flow Cytometry MH - Membrane Potential, Mitochondrial/drug effects MH - Picolinic Acids/*pharmacology MH - Reactive Oxygen Species/metabolism OTO - NOTNLM OT - Chromium picolinate OT - apoptosis OT - chick embryo fibroblast OT - flow cytometry OT - oxidative stress EDAT- 2013/08/09 06:00 MHDA- 2014/11/15 06:00 CRDT- 2013/08/09 06:00 PHST- 2013/08/09 06:00 [entrez] PHST- 2013/08/09 06:00 [pubmed] PHST- 2014/11/15 06:00 [medline] AID - 0960327113499042 [pii] AID - 10.1177/0960327113499042 [doi] PST - ppublish SO - Hum Exp Toxicol. 2014 Apr;33(4):403-13. doi: 10.1177/0960327113499042. Epub 2013 Aug 7.