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  • Title: Potentiation of inflammatory reactions in guinea-pig skin by an angiotensin converting enzyme inhibitor (MK 422).
    Author: Lindgren BR, Anderson CD, Andersson RG.
    Journal: Eur J Pharmacol; 1987 Mar 31; 135(3):383-7. PubMed ID: 3034635.
    Abstract:
    There have recently been reports of persistent cough and increased broncho-obstruction likely to have been induced by ACE inhibitors. In order to study the effect of MK 422 (the active parent diacid of enalapril) on the inflammatory response, ovalbumin-sensitized guinea-pigs were tested intradermally with ovalbumin, capsaicin and bradykinin. All inflammatory responses were enhanced by treatment with MK 422 for 2 days prior to testing as compared to the responses of control animals. Infiltration of neutrophils, eosinophils, basophils and monocytes was increased following ovalbumin challenge in the MK 422-treated animals. We suggest that skin reactions and airway symptoms noticed during ACE inhibitor therapy might have been due to induced or potentiated inflammatory reactions in the skin or in the bronchial wall.
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