反复暴露于艾草燃烧烟雾:其对大鼠的急性和慢性毒性

IF 2 4区 医学 Q2 INTEGRATIVE & COMPLEMENTARY MEDICINE Journal of Traditional Chinese Medicine Pub Date : 2018-02-01 DOI:10.1016/j.jtcm.2018.01.006
Han Li , Liu Changxi , Liu Ping , Hu Hai , Yang Jia , Cai Hong , Lim Minyee , Zhu Maoxiang , Pan Xiujie , Huang Jian , Cui Yingxue , Lao Lixing , Zhao Baixiao
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引用次数: 3

摘要

目的评价艾灸燃烧产品(MBP)对中医诊所燃烧艾烟污染空气的毒性。方法进行急性和慢性毒性研究。急性毒性研究,取Wistar大鼠5组(16只/组,雄性):雌性= 1:1)分别暴露于5种不同浓度(95%、90%、85%、80%和75%)的MBP中2 h。慢性毒性研究中,雄性大鼠(n = 21/组)分别暴露于3种浓度(10%、40%和70%)的MBP中,对照组暴露于20 min/d的清洁空气中,持续144 d。进行常规检查,并进行方差分析和量效关系分析。结果在急性毒性试验中,95%、90%、85%、80%和75%组大鼠分别在暴露2 h后、2 h内死亡16只、13只、7只、6只和3只,LD50为86.274%。在慢性毒性研究中,MBP暴露引起大鼠活动下降。10% MBP组大鼠未出现毒性迹象,而40% MBP组大鼠出现了对体重的毒性作用(P <0.05)和肺。70% MBP组大鼠的凝血系统也出现可逆性损伤(P <0.05)。结论10% MBP暴露量(27.45 mg/m3)低于雄性大鼠安全临界值。暴露在高于该限值的MBP中会引起肺损伤。诊所的血压需要降低到安全水平,并加强通风。
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Repeated exposure to moxa-burning smoke: its acute and chronic toxicities in rats

OBJECTIVE

To assess toxicities of the air in Chinese medicine clinics polluted by moxa-burning smoke due to moxibustion-derived burning products (MBP).

METHODS

Both acute and chronic toxicity studies were conducted. For the acute toxicity study, five groups of Wistar rats (n = 16/group, male: female = 1:1) were exposed to five different concentrations (95%, 90%, 85%, 80% and 75%, respectively) of MBP for 2 h. For the chronic toxicity study, another three groups of male rats (n = 21/group) were exposed to MBP in three concentrations (10%, 40% and 70%, respectively) and one control group exposed to clean air 20 min/d for 144 d. Routine examinations were performed and analyzed by analysis of variance and dose-response relationship.

RESULTS

In the acute toxicity study, the number of dead rats in the 95%, 90%, 85%, 80% and 75% groups were 16, 13, 7, 6 and 3, respectively, with LD50 of 86.274% after or during the 2 h exposure. In the chronic toxicity study, MBP exposure induced a decline in activity of the rats. Rats in the 10% group showed no signs of toxicity, while those in the 40% MBP group showed toxicity effects on the body weights (P < 0.05) and lung. Rats in the 70% MBP group also presented with reversible damage in the blood coagulation system (P < 0.05).

CONCLUSION

Exposure to 10% MBP, which is equivalent to 27.45 mg/m3, was under the critical threshold for male rats’ safety. Exposure to MBP above that limit induced lung damage. MBP in clinics need to be reduced to a safe level with enhanced ventilation.

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来源期刊
Journal of Traditional Chinese Medicine
Journal of Traditional Chinese Medicine INTEGRATIVE & COMPLEMENTARY MEDICINE-
CiteScore
2.40
自引率
3.80%
发文量
32269
审稿时长
2 months
期刊介绍: Journal of Traditional Chinese Medicine(JTCM) is devoted to clinical and theortical research on the use of acupuncture and Oriental medicine. The main columns include Clinical Observations, Basic Investigations, Reviews, Questions and Answers, an Expert''s Forum, and Discussions of Clinical Cases. Its key topics include acupuncture and electro-acupuncture, herbal medicine, homeopathy, masseotherapy, mind-body therapies, palliative care, and other CAM therapies.
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