Bảo vệ của tetramethylpyrazine đối với tổn thương dạ dày do ethanol tuyệt đối gây ra cấp tính

Journal of Biomedical Science - Tập 9 - Trang 395-400 - 2002
Chi-Feng Liu1,2, Chun-Ching Lin3, Lean-Teik Ng4, Song-Chow Lin2,5
1National Taipei College of Nursing, Taipei Medical University, Taibei
2Department of Pharmacology, Taipei Medical University, Taipei
3Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung
4Tajen Institute of Technology, Ping-Tung, Taiwan, ROC
5Department of Medicine, Taipei Medical University, Taipei, Taiwan, ROC

Tóm tắt

Việc uống ethanol tuyệt đối qua đường miệng (1,0 ml/kg) ở chuột nhắt nhịn ăn đã gây ra hoại tử rộng rãi của niêm mạc dạ dày trong vòng 1 giờ. Sự điều trị trước khi uống ethanol bằng tetramethylpyrazine (TMP) qua đường miệng 30 phút đã ngăn chặn sự hoại tử này. Kiểm tra tổng quát niêm mạc dạ dày của chuột được tiêm TMP cho thấy ít tổn thương dạ dày hơn so với chuột không được tiêm TMP. Tiền điều trị bằng TMP trên chuột thể hiện hoạt tính quét superoxide trong quá trình peroxid hóa lipid do ethanol tuyệt đối trong mẫu đồng thể niêm mạc dạ dày. TMP được thêm vào in vitro vào các mẫu đồng thể dạ dày từ chuột đối chứng cũng cho thấy hoạt tính quét. Chúng tôi kết luận rằng cơ chế bảo vệ dạ dày của TMP có thể được quy gán, ít nhất một phần, cho khả năng của nó trong việc ức chế peroxid hóa lipid và do đó gián tiếp bảo vệ niêm mạc dạ dày khỏi stress oxy hóa.

Từ khóa

#tetramethylpyrazine #ethanol tuyệt đối #tổn thương dạ dày #hoại tử niêm mạc #stress oxy hóa

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