miR-183 and miR-21 expression as biomarkers of progression and survival in tongue carcinoma patients

Micro RNAs (miRNAs) have a major role in human cancerogenesis.The current study investigated the prognostic significance of miR-183 and miR-21 expression in tongue carcinoma patients. For qPCR of miR-183 and miR-21 expression, total RNA isolated from 60 fresh-frozen tissue of tongue carcinomas was converted into cDNA by TaqMan MicroRNA Reverse Transcription Kit and quantified by TaqMan MicroRNAs Expression Assays. Fold changes in the miRNAs expression, normalized to RNU6B, were determined using 2(-Delta Delta Ct) method, and dichotomized into high and low according to cut-off values derived from ROC curve analysis. miR-183 emerged as promising discriminatory biomarker of poor outcome. Tissue over-expression of miR-183, observed in 68.3% of tongue carcinomas, was associated with clinical stage (p = 0.037), tumor size (p = 0.036), and high alcohol intake (p = 0.034).The patients with miR-183 over-expression had significantly shorter overall survival (p = 0.006) and a 5.666 times higher risk of poor outcome (p = 0.005), while miR-21 over-expression carried a tendency towards poorer survival (p = 0.073). However, multivariate analysis revealed that the recurrences were independent adverse prognostic factors, while miR-183 over-expression lost its significance. Our results suggests that over-expression of miR-183 in tumor tissue could be a potential marker of clinical stage and a poor survival of tongue carcinoma patients and may be associated with high alcohol consumption. Oncogenic miRNAs, such as the investigated miR-183 and miR-21, could be novel prognostic biomarkers of tumor progression and adverse clinical outcome in oral cancer, as well as novel therapeutic targets in cancer

HMGB1 genetic polymorphisms in oral squamous cell carcinoma and oral lichen planus patients

ObjectivesThis study examined the single nucleotide polymorphisms (SNPs) in high-mobility group box 1 (HMGB1) gene in patients with oral squamous cell carcinoma (OSCC) and oral lichen planus (OLP). Materials and methodsThe study was conducted on 93 patients with OSCC, 53 patients with OLP, and 100 controls, all Caucasians of the same ethnicity, matched by age. HMGB1 genotypes for 4 SNPs, 2262G/A (rs1045411), 1177G/C (rs3742305), 3814C/G (rs2249825), and rs4540927, were assessed using TaqMan SNP Genotyping Assays, Applied Biosystems. ResultsThe HMGB1 1177GG genotype was associated with lymph-node metastasis and tumor stage in OSCCs (P=0.016 and P=0.030, respectively). Genotype 1177GG resulted in poorer recurrence-free survival (RFS), P=0.000. The 1177G/C polymorphism was an independent predictor of RFS compared to GG genotype, P=0.001. The three polymorphisms were in linkage disequilibrium (LD). The AGC and GGC haplotypes were associated with an increased oral cancer risk, determined over the haplotype odds ratios (HOR=13.316, P=0.015, and HOR=5.769, P=0.029, respectively). The AGC haplotype was related to erosive OLP progression to OSCC (HOR=12.179, P=0.001). ConclusionsHMGB1 polymorphism 1177G/C could be associated with tumor progression and recurrence-free survival in patients with OSCC. The haplotypes of HMGB1 gene might be associated with susceptibility to OSCC and OLP progression to OSCC

Genetic Polymorphisms of Catechol-O-Methyltransferase: Association with Temporomandibular Disorders and Postoperative Pain

Aims: To evaluate the association between catechol-O-methyltransferase (COMT) gene polymorphisms and temporomandibular disorders (TMD), TMD pain, psychosocial impairment related to TMD, and postoperative pain. Methods: A total of 90 patients with a diagnosis of painful TMD and 92 matched controls were investigated for the presence of TMD, TMD pain, and psychosocial variables by the Research Diagnostic Criteria for TMD. In a prospective cohort study of 40 subjects who underwent extraction of at least one fully impacted mandibular third molar, subjects had 6 months post-surgery follow-up of postoperative pain. DNA extracted from peripheral blood was genotyped for three COMT polymorphisms (rs4680, rs6269, and rs165774) by real-time TaqMan method. The association between COMT polymorphisms and clinical variables was determined by calculating odds ratios (OR) and their 95% confidence intervals (CO. Results: Homozygous AA genotype and heterozygous variant A allele carriers (genotype AG/AA) for rs165774 polymorphism were associated with increased risk of TMD compared to wild type (wt) GG genotype (OR = 9.448, P =.006; OR = 2.088, P =.017, respectively). In addition, AA genotype was associated with increased risk of arthralgia (OR = 4.448, P =.011), myofascial pain (OR = 3.543, P =.035), and chronic TMD pain (OR = 6.173, P =.006), compared to wt genotype. AA genotype for rs6269 polymorphism was related to less postoperative chronic TMD pain (P =.025) and lower postoperative acute pain at the extraction site (P =.030). No associations with depression and somatization were observed. Conclusion: AA genotype of rs165774 could be a significant risk factor for the development of TMD and TMD pain, while AA genotype of rs6269 presents less postoperative chronic TMD pain and acute pain at a dental extraction site

Selection of Mulberry Genotypes from Northern Serbia for ‘Ornafruit’ Purposes

The genus Morus L., mulberry, is an interesting taxonomic group on account of its existing genetic variability, functional food potential and commercial importance. Mulberry trees are found in a wide range of areas in Serbia, accounting for a large phenotypic diversity in its genetic resources. Tree and fruit characteristics of more than 300 mulberry specimens were surveyed, and 15 genotypes of Morus alba, Morus nigra and Morus rubra species were selected for further analyses. These were located at various sites in the province of Vojvodina, Serbia. The present study was undertaken to investigate the diversity of the collected material aiming to pre-select genotypes suitable for landscaping/ornamental and/or fruit production purposes. Genotypes BP 3/9, DT1, ZP3 and MR1 have semi-vigorous growth, dropping growth habits, different leaf shapes (ovate, oval, cordate) and leaf color (from light to dark green), corresponding to ornamental mulberries. In addition, the semi-vigorous genotype ZD1 with a spreading tree and interesting palmate-lobed leaves was distinguished as a unique genotype for landscaping purposes. The most vigorous annual shoot growth was detected in the ZP3 genotype (118.5 cm), followed by DT1 (108.2 cm), MR1 (101.8 cm) and ZP1 (100.5 cm) genotypes. Contrary, genotype DJ1 exhibited the lowest annual growth with only a 32.9 cm average length of the shoots. Due to the greater fruit mass (4.2–6.1 g), sweetness and acidity balance as well as chemical composition, genotypes BP 1/4, DJ1, MG, MR1, DT1 and ZP3 may be recommended for fresh consumption, while genotypes DJ1, DT1, MR1, ZD1, ZP1 and BP 3/9 could be appropriate for home processing. According to fruit chemical analyses, the most promising genotypes were MR1 and DT1 combining high soluble solids content (21.2% and 18.5%, respectively), total sugar content (17.41% and 15.20%, respectively) and ascorbic acid content (42.24 and 49.28 mg/%, respectively). Additionally, DT1 genotype was also characterized by the highest total phenolic content (221.08 mg 27 GAE/100 g fresh weight). The most ornamental genotypes from this study (BP 3/9, DT1, ZD1, ZP3 and MR1) combined with their pomological and chemical characterization can be recommended for edible gardening purposes due to both aesthetic appearance and nutritive value of the fruits

Fit-for-Purpose Quality Control System in Continuous Bioanalysis during Long-Term Pediatric Studies (vol 21, 104, 2019)

The LENA collaborator list below was not included in the original article.s.status: publishe