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@#Objective: To identify the specific Hub genes in young hepatocellular carcinoma (HCC) patients, and to explore their biological and clinical significance by using bioinformatic methods. Methods: The data information of HCC and normal tissues of young (≤40 years old at diagnosis) and old (＞40 years old at diagnosis) HCC patients were obtained from GEO chip data set GSE45267. The differentially expressed genes (DEGs) in HCC tissues as comparing to normal tissues in the two groups were screened by using GEO2R and Venn chart software. The Protein-Protein Interaction (PPI) network of the specific DEGs in young group was constructed by bioinformatics tools STRING and Cytoscape to screen the Hub genes and significant modules. The Hub genes were verified by GEPIA database, and the overall survival time was analyzed by Kaplan-Meier. Finally, Gene Ontology (GO) Enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were used to analyze the DEGs specific to young group and the common DEGs of the two groups by DAVID. Results: Finally, 117 up-regulated and 179 down-regulated DEGs specific to the young group were screened out, and PPI network screened 10 most connected genes as Hub genes, among which 7 Hub genes were concentrated in the first module. Six up-regulated Hub genes, including TYMS, CDC6, BUB1, TPX2, OIP5 and KIF23, were indicated to associate with the poor prognosis in young HCC patients by GEPIA and Kaplan-Meier analysis. GO function and KEGG pathway analyses showed that the DEGs specific to young HCC patients were mainly involved in biological processes such as ATP binding, and were mainly enriched in S phase of cell cycle; while the common DEGs of two groups were mainly involved in biological processes such as cyclooxygenase P450 and cell division, and were mainly enriched in the G2/M phase of the cell cycle. Conclusion: In this study, 6 up-regulated DEGs specific to young group that suggested poor prognosis were identified, which may be the potential therapeutic and prognostic targets for young patients with HCC.
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@#Objective: To screen the Hub genes associated with the occurrence and development of esophageal squamous cell carcinoma (ESCC) and to analyze their biological functions by using various bioinformatics analysis tools. Methods: ESCC chip profile GSE100942 from GEO database was used as study subject; GEO2R tool was used to analyze the data and to screen the differentially expressed genes (DEGs), and the bioinformatics tools (DAVID, String, Cytoscape) were further used to construct protein-protein interaction (PPI) network and identify the key Hub genes. GO and KEGG were used for the biological function enrichment analysis. In the meanwhile, MiRDB was applied to identify the miRNAs that might regulate Hub genes and to construct Hub gene–miRNA network. Importantly, the expression of DEGs and the patient survival were verified by the GEPIA analysis tool. Results: By analyzing GSE100942 database, a total of 1229 DEGs with difference of 2 times and 223 DEGs with difference of 4 times were screened out. In addition, 20 Hub genes, which were all up-regulated in ESCC tissues, were also identified. The functional enrichment analysis showed that these DEGs were mainly enriched in cancer related pathways and involved in cell division and mitotic nuclear division. Among those 20 Hub genes, DLGAP5, BUB1B, TPX2, TTK, CDC20, CCNB2, AURKA and DEPDC1 were identified as 8 key Hub genes that related with ESCC, and involved in many important biological processes, such as cell proliferation, cell cycle and signal pathway. Five Hub genes, CEP55, ECT2, NEK2, DEPDC1 and NUSAP1, were identified to be highly regulated by the miRNA regulatory network. Conclusion: Microarray combined with bioinformatics can effectively analyze the DEGs associated with the occurrence and development of ESCC. The identification of the 20 Hub genes and the 8 key Hub genes can provide theoretical guidance for further research on the molecular mechanism and molecular marker screening of ESCC. ·
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50 root dentin sections were obtained from 25 extracted premolars and divided randomly into 5 groups of 10 samples each. Except group 1, all the other group specimens were demineralised by immersing in a demineralising solution for 96 hours at 370C. The specimens were then subjected to surface treatment with grape seed extract, silverdiamine fluoride and calcium sucrose orthophosphate complex according to the groups. The samples were stored in artificial saliva during the intervals and subjected to pH cycling and evaluated using SEM-EDAX and the results statistically compared. The tested remineralizing agents showed statistically significant increase in remineralization when compared to the demineralized group. Calcium sucrose orthophosphate showed the highest Ca/Pvalues followed by Silver diamine flouride and grape seed extract
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Abstract Introduction: The passage from adolescence to young adulthood introduces many challenges and chances aimed at promoting independence, financial self-sufficiency, assumption of responsibilities and separation from parents. Literature shows that in the continuum between these two phases of life, many factors intervene, producing significant differentiations. Methods: This study considered three dimensions - well-being, measured through the Clinical Outcomes in Routine Evaluation-Outcome Measure (CORE-OM); spontaneity, measured through the Spontaneity Assessment Inventory-Revised (SAI-R); and self-efficacy, measured through the General Self-Efficacy scale (GSE). The study involved two groups of Italian participants: 495 adolescents, aged between 13 and 19 years, selected at a high school; and 368 young adults, aged between 18 and 30 years, recruited by snowball sampling. Results: Results of confirmatory factor analysis for each instrument in each group indicate the validity of the three instruments for both age groups. No significant differences were found between adolescents and young adults on total or subtotal scores of the CORE-OM, except for the risk factor. Conversely, the mean scores obtained with SAI-R and GSE were very different between adolescents and young adults. Conclusions: The results of path analysis show a significant mediation of spontaneity in the link between self-efficacy and all specific psychological distress domains for adolescents. Instead, there is a significant mediation of spontaneity between self-efficacy and all specific psychological distress domains except the risk domain for young adults.
Resumo Introdução: A transição da adolescência para a idade adulta envolve muitos desafios e oportunidades de promover independência, autossuficiência financeira, assunção de responsabilidades e a saída da casa dos pais. A literatura mostra que, na passagem entre essas duas fases do ciclo vital, muitos fatores podem intervir, gerando mudanças significativas. Métodos: Este estudo considerou três dimensões psíquicas: bem-estar, investigado através do Clinical Outcomes in Routine Evaluation-Outcome Measure (CORE-OM); espontaneidade, investigada através do Spontaneity Assessment Inventory-Revised (SAI-R); e autoeficácia, investigada por meio da escala General Self-Efficacy (GSE). O estudo envolveu dois grupos de participantes italianos: 495 adolescentes com idade entre 13 e 19 anos, selecionados em uma escola de ensino médio; e 368 jovens adultos com idade entre 18 e 30 anos, recrutados por meio de amostragem em bola de neve. Resultados: Os resultados da análise fatorial confirmatória para cada instrumento em cada grupo indicaram a validade dos três instrumentos para as duas faixas etárias. Não foram observadas diferenças significativas entre adolescentes e jovens adultos nos resultados total e subtotal do CORE-OM, exceto pelo fator risco. Por outro lado, os resultados médios obtidos nos instrumentos SAI-R e GSE foram muitos diferentes entre adolescentes e jovens adultos. Conclusões: Os resultados da análise fatorial mostram uma mediação significativa da espontaneidade entre a autoeficácia e todos os domínios das dificuldades psicológicas específicas dos adolescentes. Em contraste, há uma mediação significativa da espontaneidade entre a autoeficácia e todos os domínios específicos das dificuldades psicológicas dos jovens adultos, exceto para o domínio risco.
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Humans , Male , Female , Adolescent , Adult , Young Adult , Stress, Psychological , Self Efficacy , Models, Psychological , Personality , Psychological Tests , Sex Factors , Factor Analysis, Statistical , Psychology, Adolescent , Impulsive BehaviorABSTRACT
Objective:To evaluate the effect of pinus massoniana bark extract (PMBE) and grape seed extract (GSE) on dentin demineralization caused by acid.Methods:40 root dentin blocks with half of the surface covered were randondy divided into 4 groups (n =10).All samples were subjected to pH cycling for 8 days,and deionized distilled water(DDW),0.1％NaF,12％ PMBE solution and 12％ GSE solution were used as the experimental solutions in the 4 groups.The dentin mineral density(DMD) of the both sides was determined using micro-computed tomography.The D-value of DMD between nn-demineralized and demineralized side (△DMD)was calculated.The samples were observed with field emission scanning electron microscops (FE-SEM).Results:The △DMD of DDW,NaF,PMBE and GSE groups was 198.64 ±59.97,45.94 ±24.21,90.23 ±28.77 and 105.07 ±29.53 respectively.The △DMD between PMBE and GSE groups had no significant difference (P ＞ 0.05),which were both higher than that of NaF group (P ＜ 0.05) and lower than that of DDW group(P ＜ 0.05).The FE-SEM revealed that the dentin tubules in DDW group were completely open,but in NaF group were essentially closed in PMBE group and GSE group were spindle shaped or narrow crack opening.Conclusion:PMBE and GSE had almost the same effect on improving the acid resistance of dentin.
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In this study, grape seeds were extracted using ethyl acetate and petroleum ether by solvent-solvent extraction method. The phytochemical tests were performed to identify different phytochemical compounds present in the grape seed extract (GSE). Antibacterial activity of the GSE was determined using agar diffusion method against Gram- positive and Gram-negative bacteria. Gas chromatography-mass spectrometry (GC-MS) and Fourier transform infrared spectroscopy (FTIR) analysis was done to identify the presence of bioactive compounds and their functional groups. The GC-MS results revealed a total of four compounds, known to have potent activity against cancer cells, viz, squalene, the most potent compound found in ethyl acetate extract and diethyl phthalate, ethyl-9- cis -11- trans octadecadienoate and (R)-(-)-14,-methyl-8-Hexadecyn-1-ol in petroleum ether extract. Cytotoxic activity of the GSE was observed against skin cancer cell lines A4321 using 3-(4, 5-dimethylthiazol-2-yl)-2-5-diphenyl tetrazolium bromide) MTT assay. The IC50 value of the GSE against A431 skin cancer cell line was 480 µg/mL. This is first such report against A4321 cell lines. The study gives the overall perception about importance of GSE in medicine and nutraceuticals purposes.
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Aim: To evaluate early doxorubicin (DOX) cardiotoxicity in asymptomatic leukemic patients and to explore whether Grape seed extract (GSE) proanthocyanidins would prevent the DOX-induced cardiotoxicity. Study Design: Prospective randomized double blind study. Place and Duration of Study: This study was conducted in Mansoura University Hospital, between January 2011 and May 2013. Forty two newly diagnosed acute lymphoblastic leukemia (ALL) patients were enrolled, their ages ranged from 9 to14 years. They were divided into two groups; group I received Doxorubicin-containing chemotherapy while Group II was treated with Doxorubicin-containing chemotherapy plus GSE all over the study period. All patients underwent clinical, echocardiographic and laboratory evaluations at the end of induction (phase I) and at the end of CNS intensification (phase II). Serum malondialdehyde (MDA) level, high sensitive cardiac troponin T (hscTnT), N-terminal pro brain natriuretic peptide (NT-proBNP), creatine kinase (CK) and CK -MB isoenzyme activity were determined Results: There were significant reduction in mean values of ejection fraction (EF), fractional shortening (FS) and Vitamin C, while there were highly significant increase in mean values of hscTnT, NT- ProBNP and significant increase in mean values of CK and MDA at the end of phase II in both groups. There were also significant negative correlations between each of CK and NT-proBNP and EF at the end of phase I & II. Coadminstration of DOX and GSE (group II) significantly improved echocardiographic findings (EF and FS) as well as vitamin C level. It also significantly reduced the DOX cardiotoxicity as revealed by decrement in the elevated values of biochemical cardiac markers (hscTnT, NT-pro BNP and CK activity) and oxidative injury marker (MDA). Conclusion: Biochemical cardiac markers have the potential to be used, besides echocardiographic measurements, in the early detection of DOX-induced subclinical cardiotoxicity. GSE is promising as a cardioprotective agent against DOX induced cardiotoxicity in children with ALL.
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Regarding to preserve the cadaver, formaldehyde has been used as a major preservative. However, the usage of formaldehyde has been considered by its harmful effects such as the disturbing ordor, toxicities and limitations to use. Therefore we studied the effect of decomposition-inhibition which is a natural product, grapefruit seed extract (GSE). Concerning the preservative activity, we sacrificed 8 week old male SD rat and collected liver. Using liver tissues, we treated GSE as a time dependant manner under 37degrees, 80+/-5% humidity conditions. To confirm GSE effects, we applied light and electron microscopic analysis. In results, we observed GSE attenuated the morphological changes and putrefaction of liver tissues more than 3 days. Herein, we introduced the potential substitute of formaldehyde to preserve the cadaver as well as animal tissues.