Comparative transcriptomic analysis of Gardnerella vaginalis biofilms vs. planktonic cultures using RNA-seq

Bacterial vaginosis is the most common gynecological disorder affecting women of reproductive age. Bacterial vaginosis is frequently associated with the development of a Gardnerella vaginalis biofilm. Recent data indicates that G. vaginalis biofilms are more tolerant to antibiotics and are able to incorporate other bacterial vaginosis -associated species, yielding a multi-species biofilm. However, despite its apparent role in bacterial vaginosis, little is known regarding the molecular determinants involved in biofilm formation by G. vaginalis. To gain insight into the role of G. vaginalis in the pathogenesis of bacterial vaginosis, we carried out comparative transcriptomic analysis between planktonic and biofilm phenotypes, using RNA-sequencing. Significant differences were found in the expression levels of 815 genes. A detailed analysis of the results obtained was performed based on direct and functional gene interactions. Similar to other bacterial species, expression of genes involved in antimicrobial resistance were elevated in biofilm cells. In addition, our data indicate that G. vaginalis biofilms assume a characteristic response to stress and starvation conditions. The abundance of transcripts encoding proteins involved in glucose and carbon metabolism was reduced in biofilms. Surprisingly, transcript levels of vaginolysin were reduced in biofilms relative to planktonic cultures. Overall, our data revealed that gene-regulated processes in G. vaginalis biofilms resulted in a protected form of bacterial growth, characterized by low metabolic activity. This phenotype may contribute towards the chronic and recurrent nature of bacterial vaginosis. This suggests that G. vaginalis is capable of drastically adjusting its phenotype through an extensive change of gene expressionThis work was presented at Biofilms7 meeting (26–28 June 2016, Porto, Portugal) and was awarded the Biofilms7—SPM Young Researcher Award. N.C. is an Investigador FCT. This work was funded by Fundação para a Ciência e a Tecnologia (FCT) by the strategic project of UID/BIO/04469/2013 unit and the project RECI/BBB-EBI/0179/2012 (FCOMP-01-0124-FEDER-027462), and by the National Institutes of Health; P60 MD002256 “VCU NIMHD Comprehensive Center of Excellence”. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. The following authors had an individual FCT fellowship: J.C. (SFRH/BD/93963/2013) and A.F. (SFRH/BPD/99961/2014)

Complications in third molar removal : a retrospective study of 588 patients

Objectives: Surgical removal of third molars is a regular surgical procedure, which like all operations, may have complications. The purpose of the study was to analyze the incidence of complications and their relationship with the surgical difficulty in a group of 588 patients treated by the same oral and maxillofacial surgeon. Study design: This retrospective cohort study consisted of 1699 third molars (M3) removed between 2005 and 2008. The teeth were grouped into a 6-class scale of surgical difficulty rated according to the surgical procedure description in the patient?s file: I: upper M3 requiring forceps only; II: upper M3 requiring osteotomy; III: upper M3 requiring osteotomy and tooth section; IV: lower M3 requiring forceps only; V: lower M3 requiring osteotomy; VI: lower M3 requiring osteotomy and tooth section. The complications were grouped into each surgical difficulty class and their incidence and management were also described. Results: 59 complications (3.47%), including pain, root tip fracture, paresthesia, alveolar osteitis, temporomandibular joint discomfort, and oroantral fistula were reported. Surgical difficulty class VI presented the higher incidence of complications (n=38). Conclusions: The risk of complications in third molar surgery will always exist and increases in proportion to the surgical difficulty. Mandibular M3 requiring osteotomy and tooth section have the highest risk of complications

Uma análise do setor de distribuição de flores e plantas ornamentais no estado do Rio de Janeiro

Uma das principais características da produção de flores e plantas ornamentais é que esta constitui atividade típica de pequenos produtores. Embora a floricultura brasileira venha se expandindo em áreas menos tradicionais como o Nordeste do país, a maior parte da produção ainda se concentra nas regiões Sul e Sudeste, e os dados sobre a distribuição de flores no Brasil indicam o estado de São Paulo como principal centro da produção nacional. O estado do Rio de Janeiro tem-se destacado, nesse contexto, como região potencial de expansão da produção e comercialização de flores e plantas ornamentais, com destaque para as variedades tropicais, de crescente aceitação internacional.Este trabalho analisa o segmento de distribuição de flores e plantas ornamentais no Rio de Janeiro, tendo por referência conceitual o enfoque sistêmico de produto (Commodity Systems Approach). Para consecução da pesquisa, foram realizados amplos levantamentos secundário e primário junto aos principais agentes que atuam no segmento de distribuição de flores no Rio de Janeiro. Os resultados obtidos indicam que os principais entraves ao desempenho do setor estão relacionados com as relações de mercado vigentes e com os aspectos gerenciais.Floricultura, Cadeias produtivas, Rio de Janeiro, Marketing,

Oral manifestations of celiac disease : a case report and review of the literature

Celiac disease is a chronic intestinal disease caused by intolerance to gluten associated with poor digestion and absorption of the majority of nutrients and vitamins, which may affect both developing dentition and oral mucosa. The aim of this study is to make a brief review of the literature about celiac disease and to report on a clinical case, showing the impact it may have on the general and oral health. A 39-year-old woman reported the presence of diarrhea, nauseas, flatulence, colic, difficulty with falling asleep, lack of appetite and loose of 18 Kg in the last two years. She also noted the appearance of symptomatic lesions in the mouth. These lesions had a mean duration of a month and occurred in any region of the oral mucosa, particularly on the tongue. Multiples ulcerations were found in the sublingual caruncula region, at the vestibular fornix and at the lingual apex. Topical treatment was instituted for the oral lesions with immediately relief of the symptoms. The diagnosis of celiac disease was established by means of medical clinical exam, biopsy of the small intestine, and by the presence of specific antibodies in the blood. The patient has been instructed to follow a gluten-free diet. Multiprofessional action with the involvement of a gastroenterologist and other health professionals, such as dentists, is important for diagnosing the disease and guiding the patient with celiac disease to achieve a good quality of life

Clinico-epidemiological aspects associated with penile cancer

O objetivo desta revisão bibliográfica foi descrever a epidemiologia, o comportamento biológico dos tumores e os fatores de risco para o câncer de pênis, como a infecção pelo HPV. A fimose e os processos de irritação crônica relacionados à má higiene estão comumente associados com esse tumor, enquanto a circuncisão neonatal protege contra a aparição da doença. Existe forte evidência da associação dos HPV 16 e 18 com o carcinoma peniano em mais de 50% dos casos. Pacientes com lesões penianas suspeitas devem se submeter ao exame físico, geralmente sendo este suficiente para determinar o diagnóstico e o estadiamento, assim como auxiliar na escolha terapêutica.The general objective of this article is to review the current literature regarding the epidemiology, biological behavior and risk factors for penile cancer development, such as HPV infection. Phimosis and chronic irritation related to poor hygiene are commonly associated with penile cancer, whereas neonatal circumcision reduces the relative risk for the disease. There is strong evidence that HPV types 16 and 18 are associated with penile carcinoma in as many as 50% of cases. Patients with penile lesions should undergo physical examination, which is often sufficient to diagnose and to define tumor stagging, as well as contributes to decision-making regarding therapeutical approaches and case management

Oxidative Stress and Modification of Renal Vascular Permeability Are Associated with Acute Kidney Injury during P. berghei ANKA Infection

Malaria associated-acute kidney injury (AKI) is associated with 45% of mortality in adult patients hospitalized with severe form of the disease. However, the causes that lead to a framework of malaria-associated AKI are still poorly characterized. Some clinical studies speculate that oxidative stress products, a characteristic of Plasmodium infection, as well as proinflammatory response induced by the parasite are involved in its pathophysiology. Therefore, we aimed to investigate the development of malaria-associated AKI during infection by P. berghei ANKA, with special attention to the role played by the inflammatory response and the involvement of oxidative stress. for that, we took advantage of an experimental model of severe malaria that showed significant changes in the renal pathophysiology to investigate the role of malaria infection in the renal microvascular permeability and tissue injury. Therefore, BALB/c mice were infected with P. berghei ANKA. To assess renal function, creatinine, blood urea nitrogen, and ratio of proteinuria and creatininuria were evaluated. the products of oxidative stress, as well as cytokine profile were quantified in plasma and renal tissue. the change of renal microvascular permeability, tissue hypoxia and cellular apoptosis were also evaluated. Parasite infection resulted in renal dysfunction. Furthermore, we observed increased expression of adhesion molecule, proinflammatory cytokines and products of oxidative stress, associated with a decrease mRNA expression of HO-1 in kidney tissue of infected mice. the measurement of lipoprotein oxidizability also showed a significant increase in plasma of infected animals. Together, our findings support the idea that products of oxidative stress, as well as the immune response against the parasite are crucial to changes in kidney architecture and microvascular endothelial permeability of BALB/c mice infected with P. berghei ANKA.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Universidade Federal de São Paulo, Dept Med, Disciplina Nefrol, São Paulo, BrazilUniv São Paulo, Dept Imunol, Lab Imunobiol Transplantes, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Imunol, São Paulo, BrazilUniv São Paulo, Inst Fis, BR-01498 São Paulo, BrazilUniv Fed Triangulo Mineiro, Div Patol, Uberaba, BrazilUniv São Paulo, Inst Ciencias Biomed, Dept Parasitol, BR-05508 São Paulo, BrazilInst Israelita Ensino & Pesquisa Albert Einstein, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Med, Disciplina Nefrol, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Imunol, São Paulo, BrazilFAPESP: 07/07139-3FAPESP: 10/52180-4FAPESP: 12/02270-2Web of Scienc

Efferent Pathways in Sodium Overload-Induced Renal Vasodilation in Rats

Hypernatremia stimulates the secretion of oxytocin (OT), but the physiological role of OT remains unclear. the present study sought to determine the involvement of OT and renal nerves in the renal responses to an intravenous infusion of hypertonic saline. Male Wistar rats (280-350 g) were anesthetized with sodium thiopental (40 mg. kg(-1), i.v.). A bladder cannula was implanted for collection of urine. Animals were also instrumented for measurement of mean arterial pressure (MAP) and renal blood flow (RBF). Renal vascular conductance (RVC) was calculated as the ratio of RBF by MAP. in anesthetized rats (n = 6), OT infusion (0.03 mu g . kg(-1), i.v.) induced renal vasodilation. Consistent with this result, ex vivo experiments demonstrated that OT caused renal artery relaxation. Blockade of OT receptors (OXTR) reduced these responses to OT, indicating a direct effect of this peptide on OXTR on this artery. Hypertonic saline (3 M NaCl, 1.8 ml . kg(-1) b.wt., i.v.) was infused over 60 s. in sham rats (n = 6), hypertonic saline induced renal vasodilation. the OXTR antagonist (AT; atosiban, 40 mu g . kg(-1) . h(-1), i.v.; n = 7) and renal denervation (RX) reduced the renal vasodilation induced by hypernatremia. the combination of atosiban and renal denervation (RX+AT; n = 7) completely abolished the renal vasodilation induced by sodium overload. Intact rats excreted 51% of the injected sodium within 90 min. Natriuresis was slightly blunted by atosiban and renal denervation (42% and 39% of load, respectively), whereas atosiban with renal denervation reduced sodium excretion to 16% of the load. These results suggest that OT and renal nerves are involved in renal vasodilation and natriuresis induced by acute plasma hypernatremia.Fundacao de Amparo a Pesquisa do Estado de Goias (FAPEG)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Fed Goias, Ctr Neurosci & Cardiovasc Physiol, Inst Biol Sci, Dept Physiol Sci, Goiania, Go, BrazilUniv Fed Uberlandia, Fac Phys Educ, Inst Biol Sci, BR-38400 Uberlandia, MG, BrazilUniversidade Federal de São Paulo, Dept Physiol, São Paulo, BrazilUniv Fed Goias, Inst Biol Sci, Mol Biol Lab, Goiania, Go, BrazilUniv Fed Goias, Inst Biol Sci, Dept Biochem & Mol Biol, Goiania, Go, BrazilUniversidade Federal de São Paulo, Dept Physiol, São Paulo, BrazilFundacao de Amparo a Pesquisa do Estado de Goias (FAPEG): 2012/0055431086Fundacao de Amparo a Pesquisa do Estado de Goias (FAPEG): 2009/10267000352CNPq: 477832/2010-5CNPq: 483411/2012-4Web of Scienc

Pan-Cancer Analysis of lncRNA Regulation Supports Their Targeting of Cancer Genes in Each Tumor Context

Long noncoding RNAs (lncRNAs) are commonly dys-regulated in tumors, but only a handful are known toplay pathophysiological roles in cancer. We inferredlncRNAs that dysregulate cancer pathways, onco-genes, and tumor suppressors (cancer genes) bymodeling their effects on the activity of transcriptionfactors, RNA-binding proteins, and microRNAs in5,185 TCGA tumors and 1,019 ENCODE assays.Our predictions included hundreds of candidateonco- and tumor-suppressor lncRNAs (cancerlncRNAs) whose somatic alterations account for thedysregulation of dozens of cancer genes and path-ways in each of 14 tumor contexts. To demonstrateproof of concept, we showed that perturbations tar-geting OIP5-AS1 (an inferred tumor suppressor) andTUG1 and WT1-AS (inferred onco-lncRNAs) dysre-gulated cancer genes and altered proliferation ofbreast and gynecologic cancer cells. Our analysis in-dicates that, although most lncRNAs are dysregu-lated in a tumor-specific manner, some, includingOIP5-AS1, TUG1, NEAT1, MEG3, and TSIX, synergis-tically dysregulate cancer pathways in multiple tumorcontexts

Genomic, Pathway Network, and Immunologic Features Distinguishing Squamous Carcinomas

This integrated, multiplatform PanCancer Atlas study co-mapped and identified distinguishing molecular features of squamous cell carcinomas (SCCs) from five sites associated with smokin

Spatial Organization and Molecular Correlation of Tumor-Infiltrating Lymphocytes Using Deep Learning on Pathology Images

Beyond sample curation and basic pathologic characterization, the digitized H&E-stained images of TCGA samples remain underutilized. To highlight this resource, we present mappings of tumorinfiltrating lymphocytes (TILs) based on H&E images from 13 TCGA tumor types. These TIL maps are derived through computational staining using a convolutional neural network trained to classify patches of images. Affinity propagation revealed local spatial structure in TIL patterns and correlation with overall survival. TIL map structural patterns were grouped using standard histopathological parameters. These patterns are enriched in particular T cell subpopulations derived from molecular measures. TIL densities and spatial structure were differentially enriched among tumor types, immune subtypes, and tumor molecular subtypes, implying that spatial infiltrate state could reflect particular tumor cell aberration states. Obtaining spatial lymphocytic patterns linked to the rich genomic characterization of TCGA samples demonstrates one use for the TCGA image archives with insights into the tumor-immune microenvironment