نتایج جستجو برای: junctional epithelium
تعداد نتایج: 53560 فیلتر نتایج به سال:
Bone morphogenetic protein (BMP) signaling is known to suppress oncogenesis in the small and large intestine of mice and humans. We examined the role of Bmpr1a signaling in the stomach. On conditional inactivation of Bmpr1a, mice developed neoplastic lesions specifically in the squamocolumnar and gastrointestinal transition zones. We hypothesized that the regulation of epithelial cell fate may ...
Studies have shown an association between periodontitis and serum cholesterol levels. We hypothesized that high dietary cholesterol could influence periodontitis as a result of proliferation of the junctional epithelium. Rats were divided into 4 groups. Two groups were fed a regular diet, and 2 groups were fed a high-cholesterol diet. One of each dietary group was treated with periodontitis-ind...
The aim of this study was to investigate the ultrastructural and immunohistochemical organization of the main collagenous components of healthy human keratinized mucosa surrounding endosseous implants. Eight patients with completely edentulous mandibles were selected. Four endosseous implants were placed in the mandible of each patient, connected with a bar to support a complete overdenture, an...
The tight junctions of the choroid plexus epithelium of rats were studied by freeze-fracture. In glutaraldehyde-fixed material, the junctions exhibited rows of aligned particles and short bars on P-faces, the E-faces showing grooves bearing relatively many particles. A particulate nature of the junctional strands could be established by using unfixed material. The mean values of junctional stra...
The epithelium, including the respiratory system, acts as a selective gate between the outside environment and underlying tissue. Epithelial cells are polarized due to the formation of the apical junctional complex, which includes adherent junctions and tight junctions. Endothelial cells are one of the most important cellular constituents of blood vessels. Endothelial junctional proteins play i...
Junctional intercellular communication between several established human breast cancer cell lines and a variety of mammalian cells has been examined. All the cancer cell lines were found to be either noncommunicators or nonselective communicators. This contrasts with normal human mammary epithelium which shows selectivity in junctional communication. Loss of selectivity in junctional communicat...
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