Gastric adenocarcinoma of the fundic gland(chief cellpredominant type, GA-FG-CCP) is a rare variant of welldifferentiated adenocarcinoma, and has been proposed to be a novel disease entity. GA-FG-CCP originates from t...Gastric adenocarcinoma of the fundic gland(chief cellpredominant type, GA-FG-CCP) is a rare variant of welldifferentiated adenocarcinoma, and has been proposed to be a novel disease entity. GA-FG-CCP originates from the gastric mucosa of the fundic gland region without chronic gastritis or intestinal metaplasia. The majority of GA-FG-CCPs exhibit either a submucosal tumor-like superficial elevated shape or a flat shape on macroscopic examination. Narrow-band imaging with endoscopic magnification may reveal a regular or an irregular microvascular pattern, depending on the degree of tumor exposure to the mucosal surface. Pathological analysis of GA-FG-CCPs is characterized by a high frequency of submucosal invasion, rare occurrences of lymphatic and venous invasion, and low-grade malignancy. Detection of diffuse positivity for pepsinogen-I by immunohistochemistry is specific for GA-FG-CCP. Careful endoscopic examination and detailed pathological evaluation are essential for early and accurate diagnosis of GA-FG-CCP. Nearly all GA-FG-CCPs are treated by endoscopic resection due to their small tumor size and low risk of recurrence or metastasis.展开更多
Objective： To study the regulative action of mica monomer powder preparation on the chief and parietal cells as well as G and D cells in the gastric mucosa of the experimental atrophic gastritis （CAG） rats. Methods...Objective： To study the regulative action of mica monomer powder preparation on the chief and parietal cells as well as G and D cells in the gastric mucosa of the experimental atrophic gastritis （CAG） rats. Methods： Intervention therapy was given to the experimental CAG rats at three different doses of mica monomer powder preparation to evaluate the changes of chief and parietal cells as well as G and D cells in the gastric mucosa and the histopathological changes of gastric mucosa. Results： Mica monomer powder preparation at three different doses could increase the amount of chief and parietal cells as well as G and D cells in gastric mucosa of the experimental CAG rats and alleviate and control the inflammation of gastric mucosa and the atrophy of gastric mucosa glands. Especially, better effects were shown in the mid and high dose groups. Conclusion： Mica has the pharmacological action of protecting the gastric mucosa, promoting the regeneration of gastric glands, enhancing blood flow of the gastric mucosa, and consequently improving the inflammatory responses of the gastric mucosa. One of the mechanisms is associated with promoting the secretion of gastric acid and gastric pepsin and regulating the neuroendocrine mechanism including gut hormone secretion （gastrin and somatostatin） by increasing the number of chief and parietal cells as well as G and D cells.展开更多
目的:探讨乙醇对大鼠胃粘膜主细胞的损伤及丹参提取物 F 的保护作用。方法:本实验首先采用 Pronase-EDTA 法分离出大鼠胃粘膜主细胞,然后观察乙醇对细胞的损伤作用及丹参提取物 F 对其的影响。结果:乙醇可使胃粘膜主细胞生存率下降和乳...目的:探讨乙醇对大鼠胃粘膜主细胞的损伤及丹参提取物 F 的保护作用。方法:本实验首先采用 Pronase-EDTA 法分离出大鼠胃粘膜主细胞,然后观察乙醇对细胞的损伤作用及丹参提取物 F 对其的影响。结果:乙醇可使胃粘膜主细胞生存率下降和乳酸脱氢酶漏出增加,二者呈显著的负相关关系;丹参提取物 F 可减轻乙醇诱发的细胞生存率下降及乳酸脱氢酶漏出增加。结论:丹参提取物 F 对乙醇诱发的胃粘膜主细胞损伤具有直接的细胞保护作用。展开更多
目的观察小鼠胃体部黏膜内分泌细胞的超微结构,及其与胃底腺主细胞、壁细胞的相互关系。方法取成年小鼠胃体部黏膜在透射电镜下观察内分泌细胞及主细胞、壁细胞的超微结构。结果根据胞质中颗粒超微结构的不同特点,将内分泌细胞分为Ⅰ、...目的观察小鼠胃体部黏膜内分泌细胞的超微结构,及其与胃底腺主细胞、壁细胞的相互关系。方法取成年小鼠胃体部黏膜在透射电镜下观察内分泌细胞及主细胞、壁细胞的超微结构。结果根据胞质中颗粒超微结构的不同特点,将内分泌细胞分为Ⅰ、Ⅱ、Ⅲ型。三型细胞均可见与主细胞及壁细胞紧密相邻,内分泌细胞的胞膜局部呈"Ω"型凹陷。结论基本确认Ⅰ型内分泌细胞即为肠嗜铬样细胞(enterochromaffin like cell,ECL细胞),推测ECL细胞除影响壁细胞泌酸外,在功能上与主细胞也存在密切关系。胃体部内分泌细胞除以经典内分泌方式释放激素外,也可以旁分泌方式对周围细胞产生影响。展开更多
Gastric adenocarcinoma of fundic gland type(GA-FG) with chief cell differentiation was recently proposed as an extremely rare type of gastric adenocarcinoma. Here, we report 4 cases of GA-FG with chief cell differenti...Gastric adenocarcinoma of fundic gland type(GA-FG) with chief cell differentiation was recently proposed as an extremely rare type of gastric adenocarcinoma. Here, we report 4 cases of GA-FG with chief cell differentiation. Endoscopic features included a submucosal tumor shape or a flat shape, whitish discoloration and dilated vessels on the surface. The tumors were located in the upper or middle third of the stomach. All cases were preoperatively diagnosed as GA-FG by biopsy, and endoscopic submucosal dissection was performed. Resected specimens revealed well-differentiated adenocarcinomas resembling chief cells. Tumor cells were diffusely positive for pepsinogen-Ⅰ, but partially positive for H+/K+-ATPase in scattered locations around the tumor margin. Despite the presence of minimal invasion of the carcinoma into the submucosal layer, which was observed in two cases, neither lymphatic nor venous invasion was detected in any of the cases. Finally, all cases showed less aggressive clinical behavior with low grade malignancy.展开更多
Recently,a new disease entity termed gastric adenocarcinoma of fundic gland type(GA-FG) was proposed.We treated five cases of GA-FG with endoscopic submucosal dissection.All tumors were small and located in the upper ...Recently,a new disease entity termed gastric adenocarcinoma of fundic gland type(GA-FG) was proposed.We treated five cases of GA-FG with endoscopic submucosal dissection.All tumors were small and located in the upper third of the stomach.Four tumors were macroscopically identified as 0-IIa and one was identified as 0-Ⅱb.Narrow-band imaging with magnifying endoscopy showed an irregular microvascular pattern in 2 cases and a regular microvascular pattern in the remainder.All tumors arose from the deep layer of the lamina propria mucosae and showed submucosal invasion.Lymphatic invasion was seen only in one case,while no venous invasion was recognized.All tumors were positive for pepsinogen-Ⅰ and MUC6 by immunohistochemistry.None showed p53 overexpression,and the labeling index of Ki-67 was low in all cases.All cases have been free from recurrence or metastasis.Herein,we discussed the clinicopathological features of GA-FG in comparison with past reports.展开更多
文摘Gastric adenocarcinoma of the fundic gland(chief cellpredominant type, GA-FG-CCP) is a rare variant of welldifferentiated adenocarcinoma, and has been proposed to be a novel disease entity. GA-FG-CCP originates from the gastric mucosa of the fundic gland region without chronic gastritis or intestinal metaplasia. The majority of GA-FG-CCPs exhibit either a submucosal tumor-like superficial elevated shape or a flat shape on macroscopic examination. Narrow-band imaging with endoscopic magnification may reveal a regular or an irregular microvascular pattern, depending on the degree of tumor exposure to the mucosal surface. Pathological analysis of GA-FG-CCPs is characterized by a high frequency of submucosal invasion, rare occurrences of lymphatic and venous invasion, and low-grade malignancy. Detection of diffuse positivity for pepsinogen-I by immunohistochemistry is specific for GA-FG-CCP. Careful endoscopic examination and detailed pathological evaluation are essential for early and accurate diagnosis of GA-FG-CCP. Nearly all GA-FG-CCPs are treated by endoscopic resection due to their small tumor size and low risk of recurrence or metastasis.
基金the Postdoctoral Scientific Foundation of China(No.2002032232)the Natural Science Foundation of Science and Technology Office of Zhejiang Province(No.G20011025)
文摘Objective： To study the regulative action of mica monomer powder preparation on the chief and parietal cells as well as G and D cells in the gastric mucosa of the experimental atrophic gastritis （CAG） rats. Methods： Intervention therapy was given to the experimental CAG rats at three different doses of mica monomer powder preparation to evaluate the changes of chief and parietal cells as well as G and D cells in the gastric mucosa and the histopathological changes of gastric mucosa. Results： Mica monomer powder preparation at three different doses could increase the amount of chief and parietal cells as well as G and D cells in gastric mucosa of the experimental CAG rats and alleviate and control the inflammation of gastric mucosa and the atrophy of gastric mucosa glands. Especially, better effects were shown in the mid and high dose groups. Conclusion： Mica has the pharmacological action of protecting the gastric mucosa, promoting the regeneration of gastric glands, enhancing blood flow of the gastric mucosa, and consequently improving the inflammatory responses of the gastric mucosa. One of the mechanisms is associated with promoting the secretion of gastric acid and gastric pepsin and regulating the neuroendocrine mechanism including gut hormone secretion （gastrin and somatostatin） by increasing the number of chief and parietal cells as well as G and D cells.
文摘目的:探讨乙醇对大鼠胃粘膜主细胞的损伤及丹参提取物 F 的保护作用。方法:本实验首先采用 Pronase-EDTA 法分离出大鼠胃粘膜主细胞,然后观察乙醇对细胞的损伤作用及丹参提取物 F 对其的影响。结果:乙醇可使胃粘膜主细胞生存率下降和乳酸脱氢酶漏出增加,二者呈显著的负相关关系;丹参提取物 F 可减轻乙醇诱发的细胞生存率下降及乳酸脱氢酶漏出增加。结论:丹参提取物 F 对乙醇诱发的胃粘膜主细胞损伤具有直接的细胞保护作用。
文摘目的观察小鼠胃体部黏膜内分泌细胞的超微结构,及其与胃底腺主细胞、壁细胞的相互关系。方法取成年小鼠胃体部黏膜在透射电镜下观察内分泌细胞及主细胞、壁细胞的超微结构。结果根据胞质中颗粒超微结构的不同特点,将内分泌细胞分为Ⅰ、Ⅱ、Ⅲ型。三型细胞均可见与主细胞及壁细胞紧密相邻,内分泌细胞的胞膜局部呈"Ω"型凹陷。结论基本确认Ⅰ型内分泌细胞即为肠嗜铬样细胞(enterochromaffin like cell,ECL细胞),推测ECL细胞除影响壁细胞泌酸外,在功能上与主细胞也存在密切关系。胃体部内分泌细胞除以经典内分泌方式释放激素外,也可以旁分泌方式对周围细胞产生影响。
文摘Gastric adenocarcinoma of fundic gland type(GA-FG) with chief cell differentiation was recently proposed as an extremely rare type of gastric adenocarcinoma. Here, we report 4 cases of GA-FG with chief cell differentiation. Endoscopic features included a submucosal tumor shape or a flat shape, whitish discoloration and dilated vessels on the surface. The tumors were located in the upper or middle third of the stomach. All cases were preoperatively diagnosed as GA-FG by biopsy, and endoscopic submucosal dissection was performed. Resected specimens revealed well-differentiated adenocarcinomas resembling chief cells. Tumor cells were diffusely positive for pepsinogen-Ⅰ, but partially positive for H+/K+-ATPase in scattered locations around the tumor margin. Despite the presence of minimal invasion of the carcinoma into the submucosal layer, which was observed in two cases, neither lymphatic nor venous invasion was detected in any of the cases. Finally, all cases showed less aggressive clinical behavior with low grade malignancy.
文摘Recently,a new disease entity termed gastric adenocarcinoma of fundic gland type(GA-FG) was proposed.We treated five cases of GA-FG with endoscopic submucosal dissection.All tumors were small and located in the upper third of the stomach.Four tumors were macroscopically identified as 0-IIa and one was identified as 0-Ⅱb.Narrow-band imaging with magnifying endoscopy showed an irregular microvascular pattern in 2 cases and a regular microvascular pattern in the remainder.All tumors arose from the deep layer of the lamina propria mucosae and showed submucosal invasion.Lymphatic invasion was seen only in one case,while no venous invasion was recognized.All tumors were positive for pepsinogen-Ⅰ and MUC6 by immunohistochemistry.None showed p53 overexpression,and the labeling index of Ki-67 was low in all cases.All cases have been free from recurrence or metastasis.Herein,we discussed the clinicopathological features of GA-FG in comparison with past reports.
