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Background@#MicroRNAs (miRs) are small, non-coding mRNA molecules which regulate cellular processes in tumorigenesis. miRs were discovered in extracellular environment and biological fluids, carrying marks of head and neck squamous cell carcinoma (HNSCC). They were also identified in abundance in salivary exosomes, in which they are protected by exosome lipid barrier against enzymatic injuries and therefore, the accuracy of exosomal miR-based cancer detection increase. This systematic review aimed to reveal and inventorize the most reliable exosomal miRNAs in saliva samples which can be used as novel biomarkers for early detection of HNSCC. @*Materials and methods@#A systematic literature search, according to PRISMA guideline, was performed on Pubmed and Google Academic libraries, based on specific keywords. Original articles published between 2010 and 2021 were selected. The quality of each paper was assessed using the Quality Evaluation Scoring Tool. @*Results@#At the end of selection process, five studies met the inclusion criteria. These studies analyzed twelve salivary exosomal miRs, presenting different methods of exosome and miR identification for HNSCC detection. A comprehensive explanation of the miR pathways of action was drawn and illustrated in this review. @*Conclusion@#Exosomal miRs are promising biomarkers for oral cavity and oropharyngeal cancer detection. miR-10b-5p, miR-486-5p, miR-24-3p and miR-200a stand as the most useful ones in saliva sample examination.
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The restoration of extensive zygomatic complex defects is a surgical challenge owing to the difficulty of accurately restoring the normal anatomy, symmetry, proper facial projection and facial width. In the present study, an extensive post-traumatic zygomatic bone defect was reconstructed using a custom-made implant that was made with a selective laser melting (SLM) technique. The computer-designed implant had the proper geometry and fit perfectly into the defect without requiring any intraoperative adjustments. A one-year follow-up revealed a stable outcome with no complications.
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Seguimentos , Congelamento , TitânioRESUMO
After the "Competing interests" section in the original version of this article, "Acknowledgements" section should be inserted and read.
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After the "Competing interests" section in the original version of this article, "Acknowledgements" section should be inserted and read.
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Humanos , Fissura Palatina , Cianose , Seguimentos , Intubação , Palato Mole , Parto , Síndrome de Pierre Robin , Pneumonia , Respiração , Retrognatismo , LínguaRESUMO
Several matrix metalloproteinases (MMPs) have been shown to play an important role in the invasion and metastasis of oral squamous cell carcinoma (OSCC). The members of the TGF-beta signaling pathway are being considered as predictive biomarkers for progressive tumorigenesis and molecular targets for the prevention and the treatment of cancer and metastasis. The aim of the present study was to find the clinical significance of the expression of TGF-beta 1 and MMP-2 related to the regional lymph node metastasis in OSCC. This study included 76 cases of primary OSCC, of which 42 cases showed regional lymph node metastases. Immunohistochemistry was used for the localization of protein. The relation between the expression of each protein and clinical variables was statistically evaluated. In results, the expression of TGF-beta 1 both main mass with lymph node metastasis and without lymph node metastasis was found not to be statistically significant (p>0.05). The expression of MMP-2 was found to be statistically significant related to regional lymph node metastasis (p<0.05). When compared the expression in the metastatic lymph node, TGF-beta 1 was significantly highly expressed than MMP-2 (p<0.05). In conclusion, the expression of MMP-2 was significantly elevated in patients with lymph node metastasis as compared to the patients without lymph node metastasis, which could be useful in predicting the risk of lymph node metastasis in OSCC.
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Humanos , Biomarcadores , Carcinogênese , Carcinoma de Células Escamosas , Imuno-Histoquímica , Linfonodos , Metaloproteinases da Matriz , Metástase Neoplásica , Fator de Crescimento Transformador betaRESUMO
Nonsyndromic cleft lip and/or palate (NSCLP) is one of the most common congenital deformities and its prevalence in Far East Asia, such as within Korean and Japanese populations, is relatively high. However, in the eastern part of Europe, clefts are relatively rare situations. These ethnic differences infer a genetic background of the disease. The objective of this study was to compare the frequency of single nucleotide polymorphism (SNP) in TGF-beta3 between Korean and Romanian cleft families. Korean cleft families samples were collected from twenty-six families (n=78) and Romanian cleft families samples were collected from eighteen families (n=41). For sequencing, the blood or saliva of the subjects was sampled. A single nucleotide plolymorphism was observed in the intron 5 of TGF-beta3 (A18141G). The frequency of each allele was significantly different between the Korean and Romanian samples. The AA allele was present in 18 out of 78 Korean samples (23.1%) and in 27 out of 41 Romanian samples (65.9%). The AG was present in 27 (34.6%) out of 78 Koreans and in 13 (31.7%) out of 41 Romanians. The GG was found in 33 (42.3%) Koreans and in 1 (2.4%) Romanian. The difference between the groups was significant (p<0.001). In conclusion, the frequency of observed SNP was significantly different between the two countries. SNP in TGF-beta3 in the Korean population seemed to have a higher possibility of occurrence for nonsyndromic cleft palate than the Romanian population
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Humanos , Alelos , Ásia , Povo Asiático , Fenda Labial , Fissura Palatina , Anormalidades Congênitas , Europa (Continente) , Ásia Oriental , Íntrons , Palato , Polimorfismo de Nucleotídeo Único , Prevalência , Saliva , Fator de Crescimento Transformador beta3RESUMO