• Port-a-Patch

    世界最小パッチクランプセットアップ
  • Port-a-Patch

    誰でもデータ取得 - 教育ツールとして最適
  • Port-a-Patch

    細胞, オルガネラ, 脂質二分子膜
  • Port-a-Patch

    世界で最も歴史あるプレーナー式パッチクランプ装置
  • Port-a-Patch

    細胞内灌流実験に最適

2009 - Transient receptor potential ankyrin 1 antagonists block the noxious effects of toxic industrial isocyanates and tear gases

icon pap  Port-a-Patch publication in FASEB (2009)

Authors:
Bessac B.F., Sivula M., von Hehn C.A., Caceres A.I., Escalera, J, Jordt S.

 

Journal: 
FASEB Journal (2009) 23:1102-1114


Abstract: 

The release of methyl isocyanate in Bhopal, India, caused the worst industrial accident in history. Exposures to industrial isocyanates induce lacrimation, pain, airway irritation, and edema. Similar responses are elicited by chemicals used as tear gases. Despite frequent exposures, the biological targets of isocyanates and tear gases in vivo have not been identified, precluding the development of effective countermeasures. We use Ca2+ imaging and electrophysiology to show that the noxious effects of isocyanates and those of all major tear gas agents are caused by activation of Ca2+ influx and membrane currents in mustard oil-sensitive sensory neurons. These responses are mediated by transient receptor potential ankyrin 1 (TRPA1), an ion channel serving as a detector for reactive chemicals. In mice, genetic ablation or pharmacological inhibition of TRPA1 dramatically reduces isocyanate- and tear gas-induced nocifensive behavior after both ocular and cutaneous exposures. We conclude that isocyanates and tear gas agents target the same neuronal receptor, TRPA1. Treatment with TRPA1 antagonists may prevent and alleviate chemical irritation of the eyes, skin, and airways and reduce the adverse health effects of exposures to a wide range of toxic noxious chemicals.


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