The pepsinogens of human gastric mucosa have been the subject of several studies using electrophoretic and chromatographic techniques (Uriel, 1960; Seijffers, Segal, and Miller, 1963; Tang and Tang, 1963; Kushner, Rapp, and Burtin, 1964; Rapp, Aronson, Burtin, and Grabar, 1964; Hanley, Boyer, and Naughton, 1966; Taylor, 1968; Samloff, 1969); it has been shown that gel electrophoresis is superio...

OBJECTIVES In Fujian Province, China, gastric cancer is one of the leading causes of mortality among all malignant tumors. Nanjing county and Minqing county are located in inland Fujian and have similar general demographics. However, the adjusted mortality rate of gastric cancer in Minqing was found to be much higher than that in Nanjing. We sought to explore factors associated with this increa...

BACKGROUND Different acid and peptic related gastroduodenal diseases are associated with both increased gastric secretion and Helicobacter pylori infection. Patients with H pylori associated gastritis or duodenal ulcer have increased serum pepsinogen levels which decrease after eradication. The mechanisms of H pylori induced gastric mucosal damage are not completely understood. AIM To determi...

Both carbachol (10(-4)-10(-3) mol/l) and cholecystokinin octapeptide (CCK-8) (10(-8)-10(-6) mol/l) significantly stimulated the release of pepsinogen from rabbit gastric mucosa maintained in organ culture (213-216% and 143-261% of control, respectively, p less than 0.05-0.01). The secretion was not affected by removing Ca2+ from the culture medium with ethylene glycol tetra-acetic acid. Verapam...

B lymphocytes from patients with I-cell disease (ICD) maintain normal cellular levels of lysosomal enzymes despite a deficiency of the enzyme UDP-N-acetylglucosamine: lysosomal enzyme N-acetylglucosamine-1-phosphotransferase. We find that an ICD B lymphoblastoid cell line targets about 45% of the lysosomal protease cathepsin D to dense lysosomes. This targeting occurs in the absence of detectab...

This study is aimed to see the effect of pregnancy on pepsinogen secretion and its possible protective role against ulceration. Fifty pregnant women without symptoms ofpeptic ulcer disease were studied for serum pepsinogen level. These levels were compared with those of a control group composed of age-matched, nonpregnaflt healthy women. An elevated level ofserum pepsinogen wasfound during preg...