Pengaruh Kubebin, Senyawa Lignan Pqner cubeba L.f. terhadap Pelepasan Histamin dari RPMCs
Kata Kunci:
kubebin, histainin, sel mast jaringan ikat, RPMCsAbstrak
Kubebin merupakan senyawa lignan yang diisolasi dari tanaman kemukus (Piper cubeba L.f.). Penelitian sebelumnya menunjukkan, kubebin menghambat secara poten kontraksi otot polos trakea marmut terisolasi yang diinduksi histamin dan metakolin, Pada penelitian ini, kubebin diuji aktivitasnya terhadap pelepasan histamin dari sel mast peritoneal tikus (RPMCs/sel mast jaringan ikat). Sebagai penginduksi histarnin dari sel mast jaringan ikat digunakan compound 48/ 80 (pengaktivasi protein G), thapsigargin (pengaktivasi pompa SERCA), ionomisin (ionofor bagi ion kalsium), dan PMA (aktivator protein kinase C), Penetapan kadar histamin dilakukan dengan nienggunakan HPLC-fluorometri. Pada penelitian ini, kubebin konsentrasi 30 dan 100 µM mampu menghambat pelepasan histamin yang diinduksi oleh thapsigargin masing-masing sebesar 12,86 ± 1,84% dan 40,38 ± 1,93%. Namun, kubebin tidak berhasil menghambat pelepasan histamin yang diinduksi compound 48/80, ionomisin, ataupun PMA. Hasil ini mengindikasikan bahwa kubebin menghambat pelepasan histamin dari sel mast jaringan ikat, dan kemungkinan melibatkan aktivasi pompa sarco/endoplasmic reticulum Ca2+ ATPase.
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