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^(99m)Tc in the evaluation of microleakage of composite resin restorations with SonicFill^(TM).An in vitro experimental model

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Open Journal of Stomatology 2012年第4期2卷 340-347页

作者： Carrilho Eunice Abrantes Margarida Casalta-Lopes Joao Botelho Filomena Paula Anabela Ambrósio Pedro Marto Carlos Miguel Rebelo Diana Marques joana Polido Mário ferreira Manuel Marques Faculty of Medicine University of CoimbraCoimbraPortugal

Introduction: The composite SonicFillTM (Kerr/Kavo) is indicated for posterior restorations, with a single increment up to 5 mm due to reduced polymerization shrinkage, thus reducing working time. Aim: Evaluation of marginal microleakage with SonicFillTM. Method and Materials: There were sectioned sixty noncarious human molars in the occluso-cervical direction. Class V cavities were prepared on each tooth with gingival margin walls in a standardized way. The specimens were divided into 4 groups: group 1—restored with SonicFillTM (Kerr/Kavo), group 2—restored with FiltekTM SupremeXTE (3M ESPE), group 3—the cavities were not restored;group 4—restored with SonicFillTM (Kerr/Kavo). In groups 1, 2 and 4 the enamel was conditioned with 37% orthophosphoric acid and applied the self-etch adhesive system Clear- fillTM SE BOND (Kuraray). The specimens were stored in distilled water at 37?C for 7 days. After, the specimens, were immersed in a solution of 99mTc-Pertechnetate and the radioactivity was assessed with a gamma camera. The nonparametric Kruskal-Wallis and Mann-Whitney test with Bonferroni correction at a significance level of 5% were used for the statistical analyses. Results: There are significant differences between the positive and negative control groups and between these and experimental groups (p TM and FiltekTM SupremeXTE. Conclusion: The new composite SonicFillTM and FiltekTM SupremeXTE showed no difference concerning dye penetration. The Sonic- FillTM restorative system showed no influence in concerning microleakage.

关键词： Posterior resin Composites Composite Restorations Polymerization Stress Polymerization Shrinkage Microleakage Thermocycling

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Epigenetic regulation of TP53 is involved in prostate cancer radioresistance and DNA damage response signaling

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Signal Transduction and Targeted Therapy 2023年第11期8卷 5404-5416页

作者： Catarina Macedo-Silva Vera Miranda-Gonçalves Nuno Tiago Tavares Daniela Barros-Silva joana Lencart João Lobo Ângelo Oliveira Margareta PCorreia Lucia Altucci Carmen Jerónimo Cancer Biology&Epigenetics Group Research Center of IPO Porto(CI-IPOP)/CI-IPOP@RISE(Health Research Network)Portuguese Oncology Institute of Porto(IPO-Porto)/Porto Comprehensive Cancer Center Raquel Seruca(Porto.CCC)R.Dr.António Bernardino de Almeida4200-072PortoPortugal Department of Precision Medicine University of Campania“Luigi Vanvitelli”80138NaplesItaly Department of Pathology and Molecular Immunology ICBAS-School of Medicine&Biomedical SciencesUniversity of PortoR.Jorge de Viterbo Ferreira 2284050-313PortoPortugal Medical Physics Radiobiology and Radiation Protection Group-Research Center of IPO Porto(CI-IPOP)/CI-IPOP@RISE(Health Research Network)Portuguese Oncology Institute of Porto(IPO-Porto)/Porto Comprehensive Cancer Center Raquel Seruca(Porto.CCC)R.Dr.António Bernardino de Almeida4200-072PortoPortugal Department of Medical Physics Portuguese Oncology Institute of Porto4200-072PortoPortugal Department of Pathology Portuguese Oncology Institute of PortoPortoPortugal Department of Radiation Oncology Portuguese Oncology Institute of PortoPortoPortugal BIOGEM Molecular Biology and Genetics Research Institute83100AvellinoItaly IEOS Institute of Endocrinology and Oncology80100NaplesItaly

External beam radiotherapy(RT)is a leading first-line therapy for prostate cancer(PCa),and,in recent years,significant advances have been ***,RT resistance can arise and result in long-term recurrence or disease progression in the worst-case ***,making crucial the discovery of new targets for PCa ***,we generated a radioresistant PCa cell line,and found p53 to be highly expressed in radioresistant PCa cells,as well as in PCa patients with recurrent/disease progression submitted to *** dissection revealed that RT could promote p53 expression via epigenetic ***,a decrease of H3K27me3 occupancy at TP53 gene promoter,due to increased KDM6B activity,was observed in radioresistant PCa ***,p53 is essential for efficient DNA damage signaling response and cell recovery upon stress induction by prolonged fractionated ***,KDM6B inhibition by GSK-J4 significantly decreased p53 expression,consequently attenuating the radioresistant phenotype of PCa cells and hampering in vivo 3D tumor ***,this work contributes to improve the understanding of p53 as a mediator of signaling transduction in DNA damage repair,as well as the impact of epigenetic targeting for PCa radiosensitization.

关键词： TP53 damage cancer

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Biomarkers of Stress and Inflammation in Assessing the Quality of Welfare of Conditioned Vaquejada Horses

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Open Journal of Veterinary Medicine 2023年第8期13卷 147-159页

作者： Keity Laiane Gomes Trindade Carolina Jones ferreira Lima da Silva Raissa Karolliny Salgueiro Cruz César Fabiano Vilela joana de Sousa Araújo Simões Clarisse Simões Coelho José Dantas Ribeiro Filho Helena Emília Cavalcanti da Costa Cordeiro Manso Helio Cordeiro Manso Filho Núcleo de Pesquisa Equina Universidade Federal Rural de Pernambuco Recife Brazil Faculdade de Medicina Veterinária Centro Universitário Cesmac Maceió Brazil Médico Veterinário Privado Americana Brazil Equine Academic Division Faculty of Veterinary Medicine Lusofona University (ULusofona) Lisbon Portugal CIISA-Centre for Interdisciplinary Research in Animal Health Faculty of Veterinary Medicine University of Lisbon Lisbon Portugal Associate Laboratory for Animal and Veterinary Science (AL4AnimalS) Faculty of Veterinary Medicine University of Lisbon Lisbon Portugal Mediterranean Institute for Agriculture Environment and Development Universidade de évora évora Portugal Departamento de Medicina Veterinária Universidade Federal de Vi&#231osa Vi&#231osa Brazil

In recent decades, the intensity of training and equestrian competitions has significantly increased, thus the assessment of the well-being of the equine athlete has become essential in all equestrian modalities. The aim of this study was to ascertain whether equine athletes submitted to a vaquejada simulation test (VqST), comprised of three races, presented changes in blood biomarkers related to stress and health status. Fourteen healthy Quarter Horses, used as pull horses in this equestrian modality, were evaluated. Ten animals were submitted to the VqST and the remaining four were used as a control group. Blood samples were collected pre-test (during fast), immediately after, and at 1, 4 and 24 hours of recovery. The assessed blood biomarkers included cortisol, interleukin (IL)-6, IL-1β, iron, urea, creatinine, and gamma-glutamyl transferase (GGT) concentrations and results were analyzed using One Way ANOVA (time) with the SigmaStat 13.0 software. No differences between sample times were detected in both groups (p > 0.05) and no differences were found between groups (p > 0.05). The results suggest that all horses were well conditioned for the level of effort imposed by the three vaquejada races. The adaptation to physical exercise may enable the regulation of the acute response to stress in the tissues involved in the exercises, with no differences being observed in stress and health biomarkers, such as IL-6, IL-1β and cortisol. In conclusion, well-conditioned vaquejada horses exhibit a balanced regulation of biological processes, which contributes an increased athletic longevity and better quality of athletic life.

关键词： Horse Races Welfare Hormones Cortisol Interleukins Iron

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宁波华茂艺术教育博物馆

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云南化工 2021年第4期 80-85页

作者： Jorge Santos joana Soeiro Sara Pinto Susana Oliveira Francesca Tiri Rita ferreira Diana Vasconcelos Inês Bastos Luisa Felizardo 侯博文范嘉苑 HouPictures

外在小巧,内在丰盈。一间博物馆的内部空间必须广阔。一间博物馆的内部空间必须明亮。华茂艺术教育博物馆是一间体量小而内部宽广的博物馆。它倚靠小山坡,以波浪状的起伏姿态立于地面之上,以其优雅而迷人的特征吸引着人们。在这座小建...

外在小巧,内在丰盈。一间博物馆的内部空间必须广阔。一间博物馆的内部空间必须明亮。华茂艺术教育博物馆是一间体量小而内部宽广的博物馆。它倚靠小山坡,以波浪状的起伏姿态立于地面之上,以其优雅而迷人的特征吸引着人们。在这座小建筑之中,任何东西都是举重若轻。环绕建筑外延探索至内嵌于低矮屋檐下的公共入口,推开不起眼的大门将进入一个广阔的空间,挑高的建筑映入眼帘,沿蜿蜒的斜坡能到达不同楼层。这种介于"压缩"与"释放"之间的空间体验恒定地存在于参访的过程之中。多样化的参观流线以及相互连接的空间让这座小建筑的内部看起来开阔宽敞。

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Adenosine A2A receptors induce the formation of abnormal secondary axons in rat hippocampal neurons: a new target to arrest epileptogenesis

Adenosine A2A receptors induce the formation of abnormal sec...

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中国神经科学学会第十二届全国学术会议

作者： Xinli Xu Sofia Al?ada-Morais Nélio M.Gon?alves joana M.Marques Sergio Valbuena Rui O.Beleza Francisco Q.Gon?alves Sofia ferreira Juan Lerma Rodrigo A.Cunha Ricardo J.Rodrigues CNC-Center for Neuroscience and Cell Biology University of Coimbra

Current anti-epileptic drugs mostly control convulsions with a limited efficacy, and do not seize epileptogenesis. One of the structural-functional modifications occurring during epileptogenesis is an abnormal axonal sprouting. The hippocampal mossy fiber(MF) sprouting found in patients and in animal models of temporal lobe epilepsy(TLE)(Neuroscience14, 375-403) generates an aberrant excitatory feedback circuit in granule cells that is thought to contribute to the hyperexcitability underlying the seizure-prone state(Neurochem. Res.28, 1649-58). However, the mechanism underlying this aberrant re-wiring is still poorly understood. There is now a growing evidence for a sustained increase in extracellular ATP levels in different pathological conditions, prompting ATP as a danger signal in the brain(Front. Neurosci.9:148). Accordingly, we now measured a sustained increase of the evoked release of ATP from hippocampal nerve terminals of Sprague-Dawley rats subjected to Status Epilepticus(SE) induced by pilocarpineinjection. Concomitantly, we found in developing rat hippocampal neurons that the pharmacological activation of adenosine A receptors(ARs) with the selective agonist CGS21680(30 n M) induces the formation of abnormal secondary axons. This prompted us to propose that this abnormal sprouting is due to an abnormal reactivation of the developmental-related AR-driven axon formation and outgrowth. We have now found in hippocampal organotypic slices that the spontaneous MF sprouting was attenuated by the pharmacological blockade of ARs, since the current densities(p A/p F) recorded were significantly lower in the slices cultured in the presence of the selective AR antagonist SCH58261(100 n M). More importantly, we found that the animals subjected to a long-term systemic treatment with SCH58261(0.1 mg/kg, i.p.), beginning 10 hours after pilocarpine-induced SE in rats, displayed significantly less hippocampal MF sprouting. Interestingly, CD73 knockout(CD73 KO) mice(lackin

关键词： A2A receptors Mossy fiber sprouting Status epilepticus CD73

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