Abstract
To evaluate the effect of a hydroethanolic extract of Momordica charantia L. ("bitter melon", Cucurbitaceae) leaves (MCHA) on ovalbumin (OVA)-induced asthma model. Balb/c mice were sensitized twice and challenged for 4 alternate days with OVA and then treated with MCHA (500 mg/kg) for 7 consecutive days. Control groups received treatment with normal saline or dexamethasone (2 mg/kg) on the same day. We assessed in vivo bronchial hyperresponsiveness and ex-vivo inflammation and mucus production in bronchoalveolar lavage (BAL), lung homogenates, and lung tissue. MCHA significantly improved airway hyperresponsiveness near baseline levels. MCHA administration significantly improved airway and lung inflammation, demonstrated by decreased total and inflammatory cells in BAL, lower levels of IL-5 and IL-13 in lung homogenate, and fewer inflammatory cells in lung tissue. Additionally, MCHA significantly diminished goblet cells in lung tissue. Administration of a hydroethanolic extract of M. charantia leaves was effective in treating OVA-induced asthma in an animal model.
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