Effects of Gastric Freezing on the Isolated Denervated Gastric Pouch in Dogs

The purpose of this study was to investigate the effects of gastric freezing on the chief and parietal cells of the stomach. To carry this out six Heidenhain pouch dogs were prepared. The secretions of these pouches were studied, both for HCl levels and pepsin activity, for 30 days before and 30 days after the freezing of the pouch. Freezing was carried out for one hour at -17 to -20° C. The results show that no essential depression of either the HCl levels or the pepsin activity of the juice was effected by freezing. Therefore, it is deduced that freezing does not affect the functional activity of either the chief or the parietal cells. Complications such as ulceration and fistula formation into adjacent organs occurred as a result of freezing in certain pouch dogs.     

胃癌前病变及胃癌的血清学生物标志物研究进展

胃癌是死亡率极高的恶性肿瘤.胃癌的早期诊断有助于发现并选择合适的治疗方案以降低其死亡率.近年来随着分子生物学技术的发展,血清学标志物以其创伤小,痛苦少而成了研究的重点.由于胃癌通常由一系列癌前疾病发展而来,因此与胃癌前病变各个阶段相关的血清学生物标志物的检测对于胃部肿瘤的早期诊断同样具有重要的临床意义.本文综述了目前胃癌前病变阶段及胃癌诊断相关的血清学生物标记物研究的最新进展.这些血清学标志物对于病情估计以及胃癌的早期诊断、组织分型及判断预后等都具有重要意义.     

Gastric polyposis

In a series of 48 cases of gastric polyps, 40 patients had benign lesions while the polyps in the remaining eight cases were malignant. Although the symptomatology in this series was not uniform, only one patient was entirely asymptomatic. Of the eight patients with malignant lesions, three had polyps which could well be described as small, suggesting that size may not be a reliable criterion of benignity even in a single lesion. Laboratory studies indicated that anemia, achlorhydria and occult blood in the stools are frequently associated with gastric polyps. There was no apparent correlation, however, between these phenomena and the benign or malignant nature of the lesions.X-ray examination, performed in every instance, was completely negative in six cases and inconclusive in an additional five. Gastroscopy did not reveal the presence of polyps in three of 15 cases. Malignant change was detected by cytologic examination in one case in which both roentgen and gastroscopic examination were negative. The author believes that in most cases of gastric polyps operative treatment affords the greatest degree of safety. An operative procedure of considerably less extent than total gastric resection often is feasible. However, if true polyps occur where removal can be effected only by total gastric resection, the incidence of malignant change in these lesions would seem to indicate the advisability of such a procedure unless positive contraindicating conditions are present.