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Endocannabinoid 2-arachidonoylglycerol làm giảm giải phóng cytochrome c từ ty thể gan do canxi kích thích
Tóm tắt
2-Arachidonoylglicerol (2-AG) là một endocannabinoid mô phỏng các tác động dược lý của Δ9 tetrahydrocannabinol, thành phần gây tác động tâm lý của cây Cannabis sativa. Chất này có mặt trong nhiều mô động vật có vú như não, gan, lá lách, tim và thận, nơi mà nó có các tác động sinh học khác nhau, có thể thông qua thụ thể hoặc độc lập với sự kích hoạt thụ thể. Công trình này phân tích tác động của 2-AG lên chức năng ty thể gan. Kết quả cho thấy rằng 2-AG gây ra sự giảm đáng kể giải phóng cytochrome c nhạy cảm với ciclosporin A, được kích thích bởi canxi từ ty thể, một quá trình đại diện cho một sự kiện sớm của chương trình thải hợp bào chết. Sự sưng nở ma trận và sản xuất ROS nhạy cảm với ciclosporin, được đo dưới cùng điều kiện này, thì ngược lại, gần như không bị ảnh hưởng hoặc thậm chí tăng lên, theo thứ tự, bởi 2-AG. Hơn nữa, 2-AG được phát hiện kích thích hoạt động succinate oxidase ở trạng thái nghỉ và ức chế hoạt động ATP synthase FoF1 nhạy cảm với oligomycin. Tất cả các tác động này dường như liên quan đến việc thay đổi độ lỏng của màng ty thể phụ thuộc vào 2-AG, đã được đo lường thông qua sự phân cực tổng quát của huỳnh quang laurdan.
Từ khóa
#2-arachidonoylglycerol #cytochrome c #ty thể gan #thuốc endocannabinoid #apoptosis #sự phân cực huỳnh quangTài liệu tham khảo
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