Major Cornelius

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The purpose of this article is to provide an overview of the research process and highlight some of the most important aspects. The definition of research and some general terminology are reviewed. Included in this article are discussions of the following: defining a problem, reviewing the literature, types of study designs, sampling, types of measurement,(More)
This study evaluates prospectively the effect of parathyroidectomy on basal acid output (BAO), maximal acid output (MAO), fasting serum gastrin, secretin-stimulated serum gastrin, and sensitivity to antisecretory medication in 10 consecutive patients with primary hyperparathyroidism (PHP), Zollinger-Ellison syndrome (ZES), and multiple endocrine neoplasia(More)
Mutagenesis in vitro of the gene encoding the large subunit of ribulose-1,5-bisphosphate carboxylase/ oxygenase (EC from Anacystis nidulans Synechococcus PCC 6301) was used to generate novel enzymes in Escherichia coli. Residues in C-terminal loop 6 of the β/α barrel structure of the large subunit were changed. Replacement of valine 331 with(More)
Famotidine, a new, potent, long-acting histamine H2-receptor antagonist was compared with cimetidine and ranitidine in 9 patients with Zollinger-Ellison syndrome. The mean minimum daily requirement of famotidine to control gastric acid hypersecretion was 0.24 g (range 0.08-0.48 g) compared with 2.1 g (range 0.6-3.6 g) for ranitidine and 7.8 g (range(More)
The H2-histamine receptor antagonists, cimetidine and ranitidine, were compared for their abilities to control acid secretion on a short- and long-term basis in 13 patients with gastric hypersecretory disorders. The rate of onset of action did not differ between the two drugs. The actions of both drugs were increased by an anticholinergic agent, and there(More)
Over a three-year period, 281 fiberoptic bronchoalveolar lavage procedures were performed on 119 individuals with interstitial lung disease and 22 normal volunteers. There were no major complications. Less than 5 percent of the procedures were associated with minor complications including (2.5 percent), pneumonitis (0.4 percent), bleeding (0.7 percent) and(More)
Although acute tropical pulmonary eosinophilia (TPE) is well recognized as a manifestation of filarial infection, the processes that mediate the abnormalities of the lung in TPE are unknown. To evaluate the hypothesis that the derangements of the lower respiratory tract in this disorder are mediated by inflammatory cells in the local milieu, we utilized(More)
The acute and long-term effects of omeprazole on gastric acid secretion were examined in 11 patients with Zollinger-Ellison syndrome. Basal gastric acid secretion was inhibited by 50% 3 h after a single 60-mg dose of omeprazole and 78% 4 h after administration of omeprazole. Patients were treated with a single daily dose of omeprazole, and the dose(More)
In the present study we explored whether the presence or absence of symptoms could provide a reliable way of assessing the adequacy of control of gastric secretion in patients with Zollinger-Ellison syndrome who were treated medically. Over a 5-yr period, 26 Zollinger-Ellison syndrome patients were entered into a prospective study which examined the(More)
In 1983, all trials of omeprazole in humans were stopped because rats given the drug developed gastric endocrine cell hyperplasia and carcinoid tumors. Further studies in rats showed that drug-induced achlorhydria and hypergastrinemia caused these changes. Because data in humans are limited, we compared the numbers of endocrine cells, as judged by silver(More)