41 research outputs found
Adenoid cystic carcinoma of the tongue : Case report and literature review
Adenoid cystic carcinoma is a common malignant neoplasm originated from salivary glands. The clinical and pathological findings typical of this tumor include slow growth, perineural invasion, and potential local recurrence. It accounts for nearly 2% to 4% of head and neck area tumors. In minor salivary glands it usually affects the palate. We described herein the case of a patient who presented a posterior tongue lesion, which was treated with surgery and radiotherapy as additional treatment. We also carried out a brief literature review on the subject
A Contribuição dos Museus para a Institucionalização e Difusão da Paleontologia.
Since the calls âcabinets of curiosities", the essence of natural history was consolidating itself with the birth of the museums and the development of the Museums of Natural History. This consolidation was reached through following activities: expeditions, field trips, collection classification works, catalogues of diffusion of scientific knowledge, educativ activities and expositions. The present paper intends to discuss the importance of the museal institutions for the studies of Paleontology; since the museums of Natural History had exerted a pioneering paper in the institutionalization of certain areas of knowledge, as Palaeontology, Anthropology and Experimental Physiology, in Brazil. The Paleontological studies in museums had collaborated in the specialization and modernization of the appearance of "new museum idea". As this new concept the museum is a space of diffusion of scientific knowledge, represented as an object that reflects the identity of the society without an obligator linking with physical constructions. However, the Brazilian museums have been sufficientlyobsolete, with problems that involve acquisition and maintenance of collections to production of temporary or permanent exhibitions. When the Brazilian institutions of natural history are analyzed they are not organized on the new museum conception and the digital age as the North American and European ones. Despite the difficulties found by the Museums since its birth as Institution in the 18th century, the contemporary development of Museology and Palaeontology as Science had contributed for the consolidation and institutionalization of both, helping the diffusion of scientific knowledge
Insights into the posttranslational structural heterogeneity of thyroglobulin and its role in the development, diagnosis, and management of benign and malignant thyroid diseases
Thyroglobulin (Tg) is the major glycoprotein produced by the thyroid gland, where it serves as a template for thyroid hormone synthesis and as an intraglandular store of iodine. Measurement of Tg levels in serum is of great practical importance in the follow-up of differentiated thyroid carcinoma (DTC), a setting in which elevated levels after total thyroidectomy are indicative of residual or recurrent disease. The most recent methods for serum Tg measurement are monoclonal antibody-based and are highly sensitive. However, major challenges remain regarding the interpretation of the results obtained with these immunometric methods, particularly in patients with endogenous antithyroglobulin antibodies or in the presence of heterophile antibodies, which may produce falsely low or high Tg values, respectively. The increased prevalence of antithyroglobulin antibodies in patients with DTC, as compared with the general population, raises the very pertinent possibility that tumor Tg may be more immunogenic. This inference makes sense, as the tumor microenvironment (tumor cells plus normal host cells) is characterized by several changes that could induce posttranslational modification of many proteins, including Tg. Attempts to understand the structure of Tg have been made for several decades, but findings have generally been incomplete due to technical hindrances to analysis of such a large protein (660 kDa). This review article will explore the complex structure of Tg and the potential role of its marked heterogeneity in our understanding of normal thyroid biology and neoplastic processes.FapespCNPqCapesUniv Fed Sao Paulo EPM Unifesp, Escola Paulista Med, Lab Endocrinol Mol & Translac, Div Endocrinol & Metab,Dept Med, Sao Paulo, SP, BrazilUniv Fed Mato Grosso do Sul UFMS, Fac Med Famed, Dept Med, Clin Integrada 5,Endocrinol & Metab, Campo Grande, MS, BrazilUniv Fed Sao Paulo, EPM, Dept Bioquim, Div Mol Biol, Sao Paulo, SP, BrazilUniv Fed Sao Paulo EPM Unifesp, Escola Paulista Med, Lab Endocrinol Mol & Translac, Div Endocrinol & Metab,Dept Med, Sao Paulo, SP, BrazilUniv Fed Sao Paulo, EPM, Dept Bioquim, Div Mol Biol, Sao Paulo, SP, BrazilWeb of Scienc
INTERVENĂĂES CIRĂRGICAS EM DISFUNĂĂO TEMPOROMANDIBULAR: UMA REVISĂO DE LITERATURA
A Desordem temporomandibular (DTM) Ă© uma condição em que hĂĄ um comprometimento da articulação temporomandibular e/ou das estruturas adjacentes. Na maioria dos casos, seus sintomas sĂŁo discretos e cĂclicos, podendo ter variaçÔes no grau da limitação de abertura da boca e da dor, mas esta disfunção, pode tambĂ©m proporcionar um grande desconforto tornando-se uma doença gravemente incapacitante. Para a solução de problemas de desordem na articulação temporomandibular existem vĂĄrias opçÔes cirĂșrgicas, dentre elas a artroscopia. Considerada como uma tĂ©cnica segura, ela alivia a dor severa de pacientes e restabelece a amplitude dos movimentos mandibulares. A artroscopia nĂŁo Ă© considerada uma tĂ©cnica invasiva, portanto os pacientes possuem uma rĂĄpida recuperação. Nos Ășltimos anos, muito se evoluiu nessa tĂ©cnica, principalmente devido Ă melhor qualidade das imagens de ressonĂąncia magnĂ©tica (IRM), possibilitando um melhor diagnostico e tratamento mais rĂĄpido
A Efetividade da Musculação na Reabilitação PĂłs-Infarto: Perspectivas CardĂacas e OrtopĂ©dicas
This study highlights the importance of cardiac rehabilitation post-myocardial infarction (MI) and the effectiveness of weight training in this process. Cardiac rehabilitation is vital to reduce mortality and improve patients' quality of life, with weight training playing a crucial role. Cardiovascularly, weight training improves heart function, evidenced by hemodynamic parameters such as ejection fraction and stroke volume, reduces scar tissue size in the heart, and stimulates angiogenesis. Additionally, it modulates inflammation, improves cardiorespiratory fitness, and promotes healthy habits. Orthopedically, weight training increases muscle strength and endurance, improves functional capacity, and prevents musculoskeletal complications resulting from prolonged rest. The overall objective of this article is to evaluate the effectiveness of weight training in the rehabilitation of post-MI patients, focusing on cardiovascular and orthopedic benefits. The methodology used was a descriptive and qualitative bibliographic review, analyzing studies published between 1997 and 2024 in Portuguese and English. The databases consulted were PubMed, Scielo, and Google Scholar. The analysis focused on the effectiveness and safety of weight training in improving aerobic capacity, reducing cholesterol and blood pressure levels, and decreasing adverse cardiac events. The results confirm that cardiac rehabilitation, including aerobic and resistance exercises, is safe and effective. However, long-term adherence is a challenge. Weight training shows additional benefits such as increased muscle strength, improved functional capacity, and prevention of musculoskeletal complications. To maximize benefits and minimize risks, supervision by specialized health professionals is essential. This study concludes that weight training is a valuable intervention in post-MI rehabilitation, offering significant benefits for cardiovascular and orthopedic health. Including this practice in rehabilitation programs can optimize clinical outcomes and improve patients' quality of life. Continued research in this area is crucial to enhance rehabilitation strategies and ensure the safety and effectiveness of exercise programs for this specific population.Este estudo destaca a importĂąncia da reabilitação cardĂaca pĂłs-infarto do miocĂĄrdio (IAM) e a eficĂĄcia da musculação nesse processo. A reabilitação cardĂaca Ă© vital para reduzir a mortalidade e melhorar a qualidade de vida dos pacientes, com a musculação desempenhando um papel crucial. Cardiovascularmente, a musculação melhora a função cardĂaca, evidenciada por parĂąmetros hemodinĂąmicos como fração de ejeção e volume sistĂłlico, reduz o tamanho da cicatriz no tecido cardĂaco e estimula a angiogĂȘnese. AlĂ©m disso, modula a inflamação, melhora a aptidĂŁo cardiorrespiratĂłria e promove hĂĄbitos saudĂĄveis. Ortopedicamente, a musculação aumenta a força e resistĂȘncia musculares, melhora a capacidade funcional e previne complicaçÔes musculoesquelĂ©ticas decorrentes do repouso prolongado. O objetivo geral deste artigo Ă© avaliar a eficĂĄcia da musculação na reabilitação de pacientes pĂłs-infarto, focando nos benefĂcios cardiovasculares e ortopĂ©dicos. A metodologia utilizada foi uma revisĂŁo bibliogrĂĄfica descritiva e qualitativa, analisando estudos publicados entre 1997 e 2024, em portuguĂȘs e inglĂȘs. As bases de dados consultadas foram PubMed, Scielo e Google Scholar. A anĂĄlise focou na eficĂĄcia e segurança da musculação em melhorar a capacidade aerĂłbica, reduzir nĂveis de colesterol e pressĂŁo arterial, e diminuir eventos cardĂacos adversos. Os resultados confirmam que a reabilitação cardĂaca, incluindo exercĂcios aerĂłbicos e de resistĂȘncia, Ă© segura e eficaz. No entanto, a adesĂŁo a longo prazo Ă© um desafio. A musculação mostra benefĂcios adicionais como o aumento da força muscular, melhora da capacidade funcional e prevenção de complicaçÔes musculoesquelĂ©ticas. Para maximizar os benefĂcios e minimizar riscos, Ă© essencial a supervisĂŁo por profissionais de saĂșde especializados. Este estudo conclui que a musculação Ă© uma intervenção valiosa na reabilitação pĂłs-infarto, oferecendo benefĂcios significativos para a saĂșde cardiovascular e ortopĂ©dica. A inclusĂŁo dessa prĂĄtica nos programas de reabilitação pode otimizar desfechos clĂnicos e melhorar a qualidade de vida dos pacientes. A continuidade de pesquisas nesta ĂĄrea Ă© crucial para aprimorar estratĂ©gias de reabilitação e garantir a segurança e eficĂĄcia dos programas de exercĂcios para essa população especĂfica
Pervasive gaps in Amazonian ecological research
Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4
While the increasing availability of global databases on ecological communities has advanced our knowledge
of biodiversity sensitivity to environmental changes,5â7 vast areas of the tropics remain understudied.8â11 In
the American tropics, Amazonia stands out as the worldâs most diverse rainforest and the primary source of
Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13â15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazonâs biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus
crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced
environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian
Amazonia, while identifying the regionâs vulnerability to environmental change. 15%â18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by
2050. This means that unless we take immediate action, we will not be able to establish their current status,
much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio
TRY plant trait database â enhanced coverage and open access
Plant traits - the morphological, anatomical, physiological, biochemical and phenological characteristics of plants - determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of traitâbased plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits - almost complete coverage for âplant growth formâ. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and traitâenvironmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives
The Genome of Anopheles darlingi, the main neotropical malaria vector
Anopheles darlingi is the principal neotropical malaria vector, responsible for more than a million cases of malaria per year on the American continent. Anopheles darlingi diverged from the African and Asian malaria vectors âŒ100 million years ago (mya) and successfully adapted to the New World environment. Here we present an annotated reference A. darlingi genome, sequenced from a wild population of males and females collected in the Brazilian Amazon. A total of 10 481 predicted protein-coding genes were annotated, 72% of which have their closest counterpart in Anopheles gambiae and 21% have highest similarity with other mosquito species. In spite of a long period of divergent evolution, conserved gene synteny was observed between A. darlingi and A. gambiae. More than 10 million single nucleotide polymorphisms and short indels with potential use as genetic markers were identified. Transposable elements correspond to 2.3% of the A. darlingi genome. Genes associated with hematophagy, immunity and insecticide resistance, directly involved in vectorhuman and vectorparasite interactions, were identified and discussed. This study represents the first effort to sequence the genome of a neotropical malaria vector, and opens a new window through which we can contemplate the evolutionary history of anopheline mosquitoes. It also provides valuable information that may lead to novel strategies to reduce malaria transmission on the South American continent. The A. darlingi genome is accessible at www.labinfo.lncc.br/index.php/anopheles- darlingi. © 2013 The Author(s)