Objective:The aim of the present study was to assess the expression of E-cad in oral precancerous lesions and conditions and oral carcinomas in comparison with normal mucosa.Materials and Methods:Total of 50 samples were selected for the study and were categorized into five groups and 10 samples in each group as Group I-oral leukoplakia (OL), Group II-oral lichen planus (OLP), Group III-oral submucous fibrosis (OSMF), Group IV-oral squamous cell carcinoma (OSCC) and Group V-normal oral mucosa (NOM) as control group. All the samples were assessed for the expression of E-cad by immunohistochemical study.Results:Upon assessing the expression of E-cad in OL, OSMF, OLP and OSCC, as majority of the samples with OSCC (90%), OL (80%), OLP (70%) and OSMF (60%) showed mild to moderate expression of E-cad staining, which was suggestive of reduction in dysplastic cells on comparison to NOM cells. This difference in expression and variation of E-cad upon comparison with normal mucosa was statistically significant (P < 0.001).Conclusion:There is significant (P < 0.001) variation of expression of E-cad with the histopathological dysplasia of the oral precancerous lesions and conditions, and the tumor differentiation of the oral cancers. However, there was no correlation of the degree of loss of expression of E-cad with the degree of dysplasia or the tumor differentiation of oral cancers. We conclude with our study that, there is a variation in the expression of E-cad but its value as a prognostic marker is questionable.

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Pleuroscopy is mandatory in diagnosing IEPE. Negative histology and a long follow-up showed a benign course. These findings suggest that we should call these effusions 'indeterminate'.

Abstract:: Current decade witnesses the regenerative potential of stem cells (SCs) based life-saving therapies for the treatment of various disease and conditions. Human teeth act as reservoir for SCs that exist with high abundance in baby, wisdom, and permanent teeth. The collection of stem cells from human exfoliated deciduous teeth (SHED) is considered as a simple process as it offers the convenience of little or no pain. In comparison to the SCs from dental or bone marrow or other tissues, the SHED offers the benefit of higher cellular differentiation and proliferation. Massive in vitro and in vivo studies reveal the regenerative potential of SHED in the engineering of dental pulp tissue, neuronal tissue, root, bio root, cardiovascular tissues, lymphatic tissues, renal tissues, dermal tissues, hepatic tissues, and bone tissues. Current review describes the methods of collection/isolation/storage, various biomarkers, and types of SHED. This review highlights the regenerative potential of SHED in the engineering of different tissues of human body. As per the available research evidences present study supports that SHED may differentiate into the endothelial cells, neurons, odontoblasts, pancreatic