PMID- 17166420 OWN - NLM STAT- MEDLINE DCOM- 20090507 LR - 20151119 IS - 0253-9624 (Print) IS - 0253-9624 (Linking) VI - 40 IP - 5 DP - 2006 Sep TI - [Effects of vitamin C on the inhibition of human leucocyte antigen class I (HLA-I) expression of human peripheral blood mononuclear cells induced by deoxynivalenol in vitro]. PG - 314-8 AB - OBJECTIVE: To explore the putative effects of Vitamin C (Vit C) on inhibition of human leucocyte antigen class I (HLA-I) expression of human peripheral blood mononuclear cells (HPBMCs) induced by deoxynivalenol (DON) in vitro. METHODS: The effects of Vit C on the changes of HLA-I expression of HPBMCs induced by DON in vitro were evaluated with cell culture, flow cytometry (FCM), Western blotting and immunocytochemical methods. RESULTS: FCM analysis showed that HLA-I expression of HPBMCs in DON treated cells was significantly lower than that in controls (FI 0.88 +/- 0.02 vs 1.00 +/- 0.03, P < 0.05). As compared with DON group, the HLA-I expressions of HPBMCs in the two Vit C (25 micromol/L and 100 micromol/L) pretreatment groups were all significantly increased (1.15 +/- 0.06 and 1.10 +/- 0.02 vs 0.88 +/- 0.02, P < 0.05). Exposure to different dosage of Vit C alone could dramatically increase the expression of HLA-I of HPBMCs in vitro as compared with that in the normal control (FI for 25 micromol/L and 100 micromol/L Vit C treatment group was 1.28 +/- 0.03 and 1.25 +/- 0.05 respectively, P < 0.05). Immunocytochemical results showed that the percentages of HLA-I positive expression of HPBMCs in Vit C pretreatment groups at different dosages were significantly higher than those in DON group (70.10 +/- 6.90)%, (64.50 +/- 5.50)% vs (42.20 +/- 4.30)%, P < 0.05. Western blotting confirmed the results of FCM and immunocytochemistry. CONCLUSIONS: Vitamin C pretreatment at different dosages could reverse at some extent the inhibitive effects of DON on HLA-I expression of HPBMCs. FAU - Zhou, Bing-juan AU - Zhou BJ AD - Laboratory of Pathology, Hebei Medcial University, Shijiazhuang 050017, China. FAU - Li, Yue-hong AU - Li YH FAU - Zhang, Xiang-hong AU - Zhang XH FAU - Xing, Ling-xiao AU - Xing LX FAU - Yan, Xia AU - Yan X FAU - Wang, Jun-ling AU - Wang JL FAU - Liu, Jing AU - Liu J FAU - Xing, Xin AU - Xing X LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhonghua Yu Fang Yi Xue Za Zhi JT - Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine] JID - 7904962 RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Trichothecenes) RN - JT37HYP23V (deoxynivalenol) RN - PQ6CK8PD0R (Ascorbic Acid) SB - IM MH - Ascorbic Acid/*pharmacology MH - Cells, Cultured MH - Flow Cytometry MH - Histocompatibility Antigens Class I/*metabolism MH - Humans MH - Monocytes/*drug effects/metabolism MH - Trichothecenes/pharmacology EDAT- 2006/12/15 09:00 MHDA- 2009/05/08 09:00 CRDT- 2006/12/15 09:00 PHST- 2006/12/15 09:00 [pubmed] PHST- 2009/05/08 09:00 [medline] PHST- 2006/12/15 09:00 [entrez] PST - ppublish SO - Zhonghua Yu Fang Yi Xue Za Zhi. 2006 Sep;40(5):314-8.