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  • HYPERGASTRINEMIA  (1)
  • Histogenesis  (1)
  • INTRAGASTRIC PH MEASUREMENT  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Growth patterns in various macroscopic types of noninvasive intramucosal colorectal carcinoma with special reference to apoptosis and cell proliferation (1998)
    Springer
    Diseases of the colon & rectum 41 (1998), S. 1376-1384 
    Details
    ISSN: 1530-0358
    Keywords: Apoptosis ; Ki-67 ; p53 ; bcl-2 ; Colorectal carcinoma ; Histogenesis ; Development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: Apoptotic cell death and cell proliferation play important roles in the histogenesis and development of colorectal carcinoma. The aim of this study was to examine the relationship between apoptosis and cell proliferation in various macroscopic types of intramucosal colorectal carcinoma in relation to the expression of p53 and bcl-2. METHODS: One hundred forty cases with endoscopically or surgically resected intramucosal colorectal carcinoma were studied. There were 57 cases of polypoid-type carcinomas, 55 cases of superficial-type carcinomas, and 28 cases of granular-type, laterally spreading tumors. Polypoid-type carcinomas were pedunculated, subpedunculated, or sessile polyps. Superficial-type carcinomas were flat lesions with a smooth, even surface. Granular-type, laterally spreading tumors were superficially spreading lesions with aggregates of nodules and a granular surface. Apoptotic cells were identified by thein situ DNA nick end labeling method. Ki-67, p53, and bcl-2 expression were examined immunohistochemically. RESULTS: The superficial-type carcinoma apoptotic index (30.9 percent) was significantly lower than that of polypoid-type carcinoma (54.4 percent) and granular-type, laterally spreading tumor (60.7 percent). The superficial-type carcinoma proliferative index (67.3 percent) was significantly higher than that of polypoid-type carcinoma (42.1 percent) and granular-type, laterally spreading tumor (28.6 percent). In superficial-type carcinomas the proliferative index in p53-positive carcinomas was significantly higher, and the apoptotic index was higher in carcinomas with a lower proliferative index. There was no significant difference in apoptotic index, proliferative index, or p53 protein overexpression betweende novo carcinomas and those that had arisen in precursor adenomas. CONCLUSIONS: The pattern of cell death and proliferation may vary with different macroscopic types of intramucosal colorectal carcinoma. Superficial-type colorectal carcinomas especially demonstrate diminished apoptosis and increased cell proliferation. This may be useful in understanding their biologic behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02237053
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of Enprostil on Omeprazole-Induced Hypergastrinemia and Inhibition of Gastric Acid Secretion in Peptic Ulcer Patients (1997)
    Springer
    Digestive diseases and sciences 42 (1997), S. 1741-1746 
    Details
    ISSN: 1573-2568
    Keywords: ENPROSTIL ; OMEPRAZOLE ; HYPERGASTRINEMIA ; INTRAGASTRIC PH MEASUREMENT ; HELICOBACTER PYLORI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This study was performed to examine the effectsof additional enprostil administration onhypergastrinemia and gastric acid suppression induced byomeprazole. Serum gastrin concentrations were measured in 10 peptic ulcer patients (six Helicobacterpylori-positive and four Helicobacter pylori-negativepatients) before treatment, after two weeks ofomeprazole (20 mg/day), and after two weeks ofomeprazole and enprostil (50 μg/day). The additionalacid inhibitory effect of enprostil was evaluated by24-hr intragastric pH measurements in five healthyHelicobacter pylori-negative volunteers. Afteromeprazole treatment, the serum gastrin level ofHelicobacter pylori-positive patients (3.5-fold ofcontrol) was markedly higher than that of Helicobacterpylori-negative patients (1.7-fold of control).Additional treatment with enprostil suppressed serumgastrin levels to 0.4-fold and 0.7-fold of omeprazoletreatment levels in Helicobacter pylori-positive andHelicobacter pylori-negative patients, respectively. In healthy volunteers, median pH recordedduring the nonmeal daytime interval increasedsignificantly with additional enprostil. Thus, enprostilreduces undesirable omeprazole-induced hypergastrinemia, especially in Helicobacter pylori-positivepatients, and effectively suppresses acidsecretion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018825902055
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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