Production of Ghrelin by the Stomach of Patients with Gastric Cancer
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概要
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Poor nutrition and weight loss are important factors contributing to poor quality of life (QOL) after gastrectomy in patients with gastric cancer. Ghrelin is a hormone produced by the stomach that, plays a role in appetite increase and fat storage. The present study aims to clarify the location of ghrelin mRNA in the stomach, changes in blood ghrelin concentrations after gastrectomy and whether or not they are associated with the reconstruction method in patients with gastric cancer. We collected seven normal mucosa samples from different parts of six totally resected stomachs with gastric cancer. We extracted RNA from the normal mucosa, synthesized cDNA from total RNA (1 μg), and then quantified ghrelin mRNA using quantitative real-time polymerase chain reaction (Q-PCR). Ghrelin blood concentrations were measured using enzyme-linked immunosorbent assay (ELISA) kits in 74 patients with gastric cancer (total gastrectomy (TG), n=23; distal gastrectomy (DG), n=30; proximal gastrectomy (PG), n=11; pylorus preserving gastrectomy (PPG), n=10). In order, the ghrelin gene was expressed most frequently in the gastric body, followed by the fornix, cardia, antrum and pylorus ring. Blood ghrelin concentrations after surgery similarly changed in all groups. The average blood ghrelin concentrations were significantly higher in the DG and PPG groups than in the TG group on postoperative days (POD) 1, 7, 30, 90 and 180. However, blood ghrelin concentrations did not significantly differ between the DG and TG groups on POD 270 and 360. Cells that produce ghrelin are supposed to be located mostly in the fundic gland of the stomach. We speculate that the production of ghrelin from other organs increases from around nine months after total gastrectomy. Therefore, evaluating the nutritional status and the weight of patients at nine months after total gastrectomy is important to help these patients improve their QOL.
- 久留米大学医学部 The Kurume Medical Journal 編集部の論文
著者
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SHIROUZU KAZUO
Department of Surgery, Kurume University School of Medicine
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Kojima Masayasu
Department Of Molecular Genetics Institute Of Life Science Kurume University
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Sato Takahiro
Department Of Agricultural And Biological Chemistry College Of Bioresource Sciences Nihon University
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AOYAGI KEISHIRO
Department of Gastroenterology and Surgery, Kurume University School of Medicine
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KIZAKI JUNYA
Department of Surgery, Kurume University School of Medicine
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SHIROUZU KAZUO
Department of Gastroenterology and Surgery, Kurume University School of Medicine
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