一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Prostaglandin drugs

Prostaglandins are a group of active materials which are widely presented inside the body, mediating various kinds of physiological functions in vivo. Gastrointestinal prostaglandins are primarily prostaglandin E (PGE), prostaglandin F (PGF) and prostacyclin (PGI). The content of the prostaglandins in the stomach is very high, and the content in the gastric muscosa was further higher than that in the submucosa layer and muscle layer.

Prostaglandins drug can protect the gastric mucosa, mainly through the following mechanisms:
1.  Inhibit the secretion of the gastric acid; the prostaglandins can inhibit gastric acid secretion with the degree of acid suppression being proportional to the applied dose and have inhibitory effect on both the basal and post-stimulation gastric acid secretion.
2. Strongly cytoprotective effect; cytoprotection refers to that prostaglandins have protection effect on the gastric mucosal injury caused by certain hazardous substances. In animal experiments, gastric bleeding, ulcers or necrosis can occur after having animal been subject to large dose of indomethacin and aspirin. Administration of prostaglandins simultaneously or in advance can prevent the formation of bleeding or ulcers, and this effect was in dose-dependent manner. The protective effects of prostaglandin cells are mainly through increasing the synthesis and secretion of gastric mucus; stimulating the secretion of bicarbonate from duodenal epithelium; inhibiting the gastrointestinal secretion of histamine, pentagastrin and gastric acid secretion and antagonizing the effect of contraction of blood vessels from thromboxane A2 and enhancing the cell repair capacity.

Prostaglandin drugs used for the protection of gastric mucosa mainly include cytotec, enprostil, rioprostil, arbaprostil, trimoprostil and rosaprostol, of which only cytotec has been formally applied to clinical practice.

Cytotec (misoprostol) tablets with 200 mg per tablet; the generally recommended dosage is 200 micrograms per time with 4 times per day (orally administrated before meals and at bedtime). At the course of 4 to 8 weeks.

  • 1
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.
炉霍县| 玉田县| 岳普湖县| 邵东县| 明星| 温宿县| 福州市| 饶阳县| 江华| 龙江县| 得荣县| 宽城| 桂林市| 凤山市| 武平县| 莎车县| 烟台市| 池州市| 虎林市| 三河市| 青龙| 陇西县| 体育| 吉木萨尔县| 射洪县| 合川市| 潜江市| 井冈山市| 乐山市| 星子县| 东港市| 正宁县| 广德县| 乃东县| 松阳县| 彝良县| 慈利县| 彰化县| 灌云县| 渭源县| 准格尔旗|