Nano-titanium dioxide modulates the dermal sensitization potency of DNCB.

Nano-titanium dioxide modulates the dermal sensitization potency of DNCB.
复制标题

DOI:
10.1186/1743-8977-9-15
复制
发表时间:
2012-05-23
影响因子:
10
通讯作者:
Vanoirbeek JA
Vanoirbeek JA
中科院分区:
医学1区
文献类型:
--
作者:
Hussain S;Smulders S;De Vooght V;Ectors B;Boland S;Marano F;Van Landuyt KL;Nemery B;Hoet PH;Vanoirbeek JA

文献摘要

参考文献

被引文献

相似文献

我们使用称为淋巴结增殖测定的局部淋巴结测定变体,确定了模型纳米颗粒 (NP)(二氧化钛,TiO2)调节已知强效皮肤敏化剂(二硝基氯苯)诱导的敏化的能力。 BALB/c 小鼠皮下注射媒介物(2.5 mM 柠檬酸钠)、TiO2 NP(0.004、0.04 或 0.4 mg/ml)或色素颗粒(0.04 mg/ml),两者均在柠檬酸钠缓冲液中稳定在每只耳朵的底部(2x50μl),然后接受皮肤应用(双耳)第 0 天、第 1 天和第 2 天使用 2,4-二硝基氯苯 (DNCB)(2x25μl 0.1%)或其载体(丙酮橄榄油 - AOO (4:1))。第 5 天,刺激指数 (SI) 计算为经 DNBC 处理的小鼠和经 AOO 处理的对照的淋巴细胞中 3HTdR 掺入的比率。在第二个实验中,在存在或不存在 0.04mg/ml TiO2 的情况下评估了 DNCB 的 EC3 值(0 至 0.1%)。在第三个实验中,在 TiO2 (0.04mg/ml) 和 DNCB (0.1%) 处理后对淋巴细胞亚群和细胞因子分泌谱进行了分析。在 AOO 处理的对照小鼠中注射 NP 对淋巴结 (LN) 增殖没有任何影响。 DNCB 致敏导致 LN 增殖,在 DNCB 致敏之前注射 TiO2 NP 可进一步增加 LN 增殖。预先注射赋形剂对照的 DNCB 的 EC3 为 0.041%,而注射 TiO2 将 DNCB 的 EC3 降低至 0.015%。 TiO2 NPs 预处理不会改变淋巴细胞亚群,但显着增加了 DNCB 处理动物的 IL-4 水平并减少了 IL-10 的产生。总之,我们的研究表明,纳米 TiO2 的施用通过增强 Th2 反应来增加 DNCB 的皮肤致敏效力,显示了 NP 的免疫调节能力。
We determined the ability of a model nanoparticle (NP) (titanium dioxide, TiO2) to modulate sensitization induced by a known potent dermal sensitizer (dinitrochlorobenzene) using a variant of the local lymph node assay called lymph node proliferation assay. BALB/c mice received sub-cutaneous injections of vehicle (2.5 mM sodium citrate), TiO2 NPs (0.004, 0.04 or 0.4 mg/ml) or pigment particles (0.04 mg/ml) both stabilized in sodium citrate buffer at the base of each ear (2x50μl), before receiving dermal applications (on both ears) of 2,4-Dinitrochlorobenzene (DNCB) (2x25μl of 0.1%) or its vehicle (acetone olive oil – AOO (4:1)) on days 0, 1 and 2. On day 5, the stimulation index (SI) was calculated as a ratio of 3HTdR incorporation in lymphocytes from DNBC-treated mice and AOO-treated controls. In a second experiment the EC3-value for DNCB (0 to 0.1%) was assessed in the absence or presence of 0.04 mg/ml TiO2. In a third experiment, the lymphocyte subpopulations and the cytokine secretion profile were analyzed after TiO2 (0.04 mg/ml) and DNCB (0.1%) treatment. Injection of NPs in AOO-treated control mice did not have any effect on lymph node (LN) proliferation. DNCB sensitization resulted in LN proliferation, which was further increased by injection of TiO2 NPs before DNCB sensitization. The EC3 of DNCB, with prior injection of vehicle control was 0.041%, while injection with TiO2 decreased the EC3 of DNCB to 0.015%. TiO2 NPs pre-treatment did not alter the lymphocyte subpopulations, but significantly increased the level of IL-4 and decreased IL-10 production in DNCB treated animals. In conclusion, our study demonstrates that administration of nano-TiO2 increases the dermal sensitization potency of DNCB, by augmenting a Th2 response, showing the immunomodulatory abilities of NPs.
DOI: 10.1289/ehp.10216
发表时间: 2007-11
影响因子: 10.4
作者:
Long TC;Tajuba J;Sama P;Saleh N;Swartz C;Parker J;Hester S;Lowry GV;Veronesi B
通讯作者: Veronesi B
DOI: 10.1016/j.biomaterials.2010.03.010
发表时间: 2010-07
期刊: Biomaterials
影响因子: 14
作者:
Patlolla RR;Desai PR;Belay K;Singh MS
通讯作者: Singh MS
DOI: 10.3109/15569527.2010.521220
发表时间: 2011-03-01
影响因子: 1.6
作者:
Madsen, Jakob Torp;Vogel, Stefan;Nielsen, Jesper Bo
通讯作者: Nielsen, Jesper Bo
DOI: 10.1111/j.1600-0536.1994.tb00650.x
发表时间: 1994-04-01
期刊: CONTACT DERMATITIS
影响因子: 5.5
作者:
GARRIGUE, JL;NICOLAS, JF;SCHMITT, D
通讯作者: SCHMITT, D
DOI: 10.1016/j.jaci.2006.06.006
发表时间: 2006-08-01
影响因子: 14.2
作者:
Chan, Ray Chun-Fai;Wang, Meiying;Nel, Andre E.
通讯作者: Nel, Andre E.