A/M： To investigate the intercellular spaces between the most superficially located esophageal epithelial cells in patients with gastroesophageal reflux disease （GERD）. METHODS： Eighteen patients with erosive esop...A/M： To investigate the intercellular spaces between the most superficially located esophageal epithelial cells in patients with gastroesophageal reflux disease （GERD）. METHODS： Eighteen patients with erosive esophagitis, 10 patients with non-erosive reflux disease （NERD）, and 18 normal asymptomatic volunteers were enrolled. Biopsy specimens were obtained from the lower esophageal mucosa without ulcer or erosion. Scanning electron microscopy was employed to investigate the tightness of the superficial cellular attachment. RESULTS： The intercellular space between the most superficially located epithelial cells in patients with erosive esophagitis or NERD was not different from that in asymptomatic healthy individuals. CONCLUSION： Widened luminal intercellular spaces of esophageal superficial epithelium are not responsible for the induction of reflux symptoms in patients with GERD.展开更多
Objective: To study the occurrence and development ofprimary syphilis from a morphological and structural aspect.Method: The ultrastructural pathological changes of syphiliticchancre were examined by transmission elec...Objective: To study the occurrence and development ofprimary syphilis from a morphological and structural aspect.Method: The ultrastructural pathological changes of syphiliticchancre were examined by transmission electron microscopy(TEM). Results: The pathological changes of syphilitic chancreoccur mainly in the dermal layer, manifested as partialthinning or lysis of the capillary basal membrane,proliferation of capillary endothelial cells, thickening of somecollagen fibers and rupture of collagen fibers surrounding Tpallidum, structural disruption of the axons of terminal nerves,disarrangement of the sheath of the myelinated nerve fiberswith separation of laminae and the attachment of T pallidumon its outer membrane, appearance of slightly swollen Tpallidum in the plasma of the capillary endothelial cells andfibroblasts, and infiltration of neutrophils, macrophages andplasma cells containing T pallidum and its debris frequentlylined by a clear sheath. Conclusion: The pathogenesis and injury of mechanism inprimary syphilis can be explained morphologically by itscharacteristic ultrastructural pathological changes.展开更多
基金The Grants-in-Aid from Science Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan, No. 19590724
文摘A/M： To investigate the intercellular spaces between the most superficially located esophageal epithelial cells in patients with gastroesophageal reflux disease （GERD）. METHODS： Eighteen patients with erosive esophagitis, 10 patients with non-erosive reflux disease （NERD）, and 18 normal asymptomatic volunteers were enrolled. Biopsy specimens were obtained from the lower esophageal mucosa without ulcer or erosion. Scanning electron microscopy was employed to investigate the tightness of the superficial cellular attachment. RESULTS： The intercellular space between the most superficially located epithelial cells in patients with erosive esophagitis or NERD was not different from that in asymptomatic healthy individuals. CONCLUSION： Widened luminal intercellular spaces of esophageal superficial epithelium are not responsible for the induction of reflux symptoms in patients with GERD.
文摘Objective: To study the occurrence and development ofprimary syphilis from a morphological and structural aspect.Method: The ultrastructural pathological changes of syphiliticchancre were examined by transmission electron microscopy(TEM). Results: The pathological changes of syphilitic chancreoccur mainly in the dermal layer, manifested as partialthinning or lysis of the capillary basal membrane,proliferation of capillary endothelial cells, thickening of somecollagen fibers and rupture of collagen fibers surrounding Tpallidum, structural disruption of the axons of terminal nerves,disarrangement of the sheath of the myelinated nerve fiberswith separation of laminae and the attachment of T pallidumon its outer membrane, appearance of slightly swollen Tpallidum in the plasma of the capillary endothelial cells andfibroblasts, and infiltration of neutrophils, macrophages andplasma cells containing T pallidum and its debris frequentlylined by a clear sheath. Conclusion: The pathogenesis and injury of mechanism inprimary syphilis can be explained morphologically by itscharacteristic ultrastructural pathological changes.
