Inhibitory effects of formaldehyde inhalation on the cardiovascular and respiratory systems in unanesthetized rabbits.

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概要

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• The mechanisms of the marked inhibitory effects of 10 ppm formaldehyde (HCHO) inhalation on heart rate and respiratory movement were investigated in unanesthetized rabbits. Inhibition of the heart rate and respiratory movement induced by HCHO inhalation was caused by a reflex reaction during sensory irritation of the upper respiratory tract, mainly the nasal mucosa, but not of the lower respiratory tract, mainly the lung. These reflex reactions, particularly decreases in the heart rate, were not blocked by vagotomy, atropine or prazosin, but were blocked by propranolol, phenoxybenzamine, phentolamine, yohimbine and guanethidine. These results suggest that these reflex reactions are derived from sympathetic nervous activity rather than parasympathetic nervous activity, and the reflex bradycardia is caused by inhibiting the transmitter release at the adrenergic nerve endings.

• 公益社団法人 日本薬理学会の論文

著者

• HORIGUCHI Yoshiya

  Kanagawa Prefectural Public Health Laboratory

• KOGI Kunitarou

  Kanagawa Prefectural Public Health Laboratory

• TANI Takayuki

  Kanagawa Prefectural Public Health Laboratory

関連論文

• MECHANISM OF THE CADIOVASCULAR AND RESPIRATORY INHIBITTIONS DURING EXPOSURE OF UNANESTHETIZED RABBITS TO FORMALDEHYDE (The 5th Meeting for the Study of Toxic Effect)
• Effects of formaldehyde on cardiac function.
• Inhibitory effects of formaldehyde inhalation on the cardiovascular and respiratory systems in unanesthetized rabbits.

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