93 research outputs found

    Application of Infrared Thermal Imaging in a Violinist with Temporomandibular Disorder

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    Temporomandibular disorders (TMD) consist of a group of pathologies that affect the masticatory muscles, temporomandibular joints (TMJ), and/or related structures. String instrumentalists, like many orchestra musicians, can spend hours with head postures that may influence the biomechanical behavior of the TMJ and the muscles of the craniocervicomandibular complex (CCMC). The adoption of abnormal postures acquired during performance by musicians can lead to muscular hyperactivity of the head and cervical muscles, with the possible appearance of TMD. Medical infrared thermography is a non-invasive procedure that can monitor the changes in the superficial tissue related to blood circulation and may serve as a complement to the clinical examination. The objective of this study was to use infrared thermography to evaluate, in one subject, the cutaneous thermal changes adjacent to the CCMC that occur before, during, and after playing a string instrument

    Three-Dimensional kinetic adaptations of gait throughout pregnancy and postpartum

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    The present publication was supported by the following projects: (1) funder, Fundação para a Ciência e Tecnologia (FCT)/Portuguese Foundation for Science and Technology, project title: Effect of Biomechanical Loading on the Musculoskeletal System in Women during Pregnancy and the Postpartum Period; promoter, CIPER/FMH-UL/ESDRM-IPS; Principal Researcher, Rita Santos-Rocha; and project reference, PTDC/DES/102058/2008; (2) funder, European Union: QREN-InAlentejo-Programa Operacional do Alentejo-2007–2013/National Strategic Reference Framework, project title: Alentejo’s Science and Technology Park, Sport and Health Research Center; promoter: Polytechnic Institute of Santarém, Sport Sciences School of Rio Maior/Health School of Santarém; Project Coordinator, Rita Santos-Rocha; and project reference, ALENT-07-0262-FEDER-001883.Biomechanical adaptations that occur during pregnancy can lead to changes on gait pattern. Nevertheless, these adaptations of gait are still not fully understood. The purpose was to determine the effect of pregnancy on the biomechanical pattern of walking, regarding the kinetic parameters. A three-dimensional analysis was performed in eleven participants. The kinetic parameters in the joints of the lower limb during gait were compared at the end of the first, second, and third trimesters of pregnancy and in the postpartum period, in healthy pregnant women. The main results showed a reduction in the normalized vertical reaction forces, throughout pregnancy, particularly the third peak. Pregnant women showed, during most of the stance phase, medial reaction forces as a motor response to promote the body stability. Bilateral changes were observed in hip joint, with a decrease in the participation of the hip extensors and in the eccentric contraction of hip flexors. In ankle joint a decrease in the participation of ankle plantar flexors was found. In conclusion, the overall results point to biomechanical adjustments that showed a decrease of the mechanical load of women throughout pregnancy, with exception for few unilateral changes of hip joint moments

    Comparison between overweight due to pregnancy and due to added weight to simulate body mass distribution in pregnancy

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    The assessment of biomechanical loading in the musculoskeletal system of the pregnant women is particularly interesting since they are subject to morphological, physiological and hormonal changes, which may lead to adaptations in gait. The purpose of this study was to analyze the effect of the increased mass in the trunk associated to pregnancy on the lower limb and pelvis, during walking, on temporal-distance parameters, joint range of motion and moments of force, by comparing a pregnant women group to a non-pregnant group, and to this group while carrying a 5 kg additional load located in the abdomen and breasts during walking, to understand which gait adaptations may be more related with the increased trunk mass, or if may be more associated with other factors such as the girth of the thigh. The subjects performed a previous 12 min training adaption to the added load. To calculate ankle, knee and hip joint angles and moments of force, a three-dimensional biomechanical model was developed. The inverse dynamics method was used to estimate net joint moments of force. The increased mass of the anterior trunk associated with second trimester of pregnancy may influence some gait variables such as the left step time, left and right stance times, double limb support time, maximum hip extension, maximum pelvic right obliquity, pelvic obliquity range of motion, maximum transversal left rotation and peak hip flexion moments of force.info:eu-repo/semantics/publishedVersio

    Influence of body composition on gait Kinetics throughout pregnancy and postpartum period

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    Pregnancy leads to several changes in body composition and morphology of women. It is not clear whether the biomechanical changes occurring in this period are due exclusively to body composition and size or to other physiological factors. The purpose was to quantify the morphology and body composition of women throughout pregnancy and in the postpartum period and identify the contribution of these parameters on the lower limb joints kinetic during gait. Eleven women were assessed longitudinally, regarding anthropometric, body composition, and kinetic parameters of gait. Body composition and body dimensions showed a significant increase during pregnancy and a decrease in the postpartum period. In the postpartum period, body composition was similar to the 1st trimester, except for triceps skinfold, total calf area, and body mass index, with higher results than at the beginning of pregnancy. Regression models were developed to predict women’s internal loading through anthropometric variables. Four models include variables associated with the amount of fat; four models include variables related to overall body weight; three models include fat-free mass; one model includes the shape of the trunk as a predictor variable. Changes in maternal body composition and morphology largely determine kinetic dynamics of the joints in pregnant women

    Empagliflozin and the New Age in the Treatment of Type 2 Diabetes: Beyond Glycemic Control

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    A diabetes mellitus tipo 2 (DMT2) tem associado um risco aumentado de mortalidade, principalmente, por doença cardiovascular (DCV). Interessa ter disponíveis opções terapêuticas que permitam o controlo glicémico mas que considerem, igualmente, a atuação sobre fatores de risco cardiovascular e a redução de eventos micro e macrovasculares. Nos últimos anos foram desenvolvidos vários inibidores do transporte renal de glicose via cotransporte de sódio/glicose (iSGLT), nomeadamente a empagliflozina, para promover a excreção urinária de glicose filtrada pelo rim. A empagliflozina é um inibidor competitivo, reversível, altamente potente e seletivo dos SGLT2, indicada no tratamento da hiperglicemia da DMT2. O EMPA-REG OUTCOME®, um ensaio clínico de resultados cardiovasculares aleatorizado, em dupla ocultação, controlado com placebo, que incluiu 7020 indivíduos com DMT2 e DCV estabelecida, avaliou o efeito da empagliflozina versus placebo, associado ao tratamento standard, na ocorrência de um compósito de 3 pontos MACE (Major Adverse Cardiovascular Events) - morte por causa cardiovascular, acidente vascular cerebral não fatal ou enfarte agudo de miocárdio não fatal. Com os resultados do EMPA-REG OUTCOME®, a empagliflozina foi o primeiro iSGLT2 a demonstrar uma redução de morbilidade cardiovascular em indivíduos com DMT2 com elevado risco cardiovascular, adicionando a proteção cardiovascular ao efeito anti-hiperglicémico do fármaco e abrindo uma nova era no tratamento e gestão da DMT2.Type 2 diabetes mellitus (T2DM) has an increased risk of mortality, mainly due to cardiovascular disease (CVD). There should be available therapeutic options that allow glycemic control but also consider the action on cardiovascular risk factors and the reduction of micro and macrovascular events. Several inhibitors of renal glucose transport via sodium/glucose cotransport (iSGLT), namely empagliflozin, have been developed in recent years, to promote kidney urinary excretion of glucose. Empagliflozin is a highly potent and selective, competitive, reversible inhibitor of SGLT2, indicated for hyperglycemia treatment in T2DM. EMPA-REG OUTCOME®, a randomized, double-blind, placebo-controlled clinical trial of 7020 subjects with established T2DM and CVD, evaluated the effect of empagliflozin versus placebo, associated with standard treatment, on the occurrence of a 3-point composite MACE (Major Adverse Cardiovascular Events) - cardiovascular death, nonfatal stroke or nonfatal myocardial infarction. With the results of EMPA-REG OUTCOME®, empagliflozin was the first iSGLT2 to demonstrate a reduction in cardiovascular morbidity in subjects with T2DM at high cardiovascular risk, adding cardiovascular protection to the antihyperglycaemic effect of the drug and, opening a new era in the management of T2DM.info:eu-repo/semantics/publishedVersio

    Exome and Tissue-Associated Microbiota as Predictive Markers of Response to Neoadjuvant Treatment in Locally Advanced Rectal Cancer

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    The clinical and pathological responses to multimodal neoadjuvant therapy in locally advanced rectal cancers (LARCs) remain unpredictable, and robust biomarkers are still lacking. Recent studies have shown that tumors present somatic molecular alterations related to better treatment response, and it is also clear that tumor-associated bacteria are modulators of chemotherapy and immunotherapy efficacy, therefore having implications for long-term survivorship and a good potential as the biomarkers of outcome. Here, we performed whole exome sequencing and 16S ribosomal RNA (rRNA) amplicon sequencing from 44 pre-treatment LARC biopsies from Argentinian and Brazilian patients, treated with neoadjuvant chemoradiotherapy or total neoadjuvant treatment, searching for predictive biomarkers of response (responders, n = 17; non-responders, n = 27). In general, the somatic landscape of LARC was not capable to predict a response; however, a significant enrichment in mutational signature SBS5 was observed in non-responders (p = 0.0021), as well as the co-occurrence of APC and FAT4 mutations (p < 0.05). Microbiota studies revealed a similar alpha and beta diversity of bacteria between response groups. Yet, the linear discriminant analysis (LDA) of effect size indicated an enrichment of Hungatella, Flavonifractor, and Methanosphaera (LDA score ≥3) in the pre-treatment biopsies of responders, while non-responders had a higher abundance of Enhydrobacter, Paraprevotella (LDA score ≥3) and Finegoldia (LDA score ≥4). Altogether, the evaluation of these biomarkers in pre-treatment biopsies could eventually predict a neoadjuvant treatment response, while in post-treatment samples, it could help in guiding non-operative treatment strategies.Fil: Takenaka, Isabella Kuniko T. M.. No especifíca;Fil: Bartelli, Thais F.. No especifíca;Fil: Defelicibus, Alexandre. No especifíca;Fil: Sendoya, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; ArgentinaFil: Golubicki, Mariano. Gobierno de la Ciudad de Buenos Aires. Hospital de Gastroenterología "Dr. Carlos B. Udaondo"; ArgentinaFil: Robbio, Juan. No especifíca;Fil: Serpa, Marianna S.. No especifíca;Fil: Branco, Gabriela P.. No especifíca;Fil: Santos, Luana B. C.. No especifíca;Fil: Claro, Laura C. L.. No especifíca;Fil: Oliveira dos Santos, Gabriel. No especifíca;Fil: Kupper, Bruna E. C.. No especifíca;Fil: da Silva, Israel T.. No especifíca;Fil: Llera, Andrea Sabina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; ArgentinaFil: de Mello, Celso A. L.. No especifíca;Fil: Riechelmann, Rachel P.. No especifíca;Fil: Dias Neto, Emmanuel. Universidade de Sao Paulo; BrasilFil: Iseas, Soledad. Gobierno de la Ciudad de Buenos Aires. Hospital de Gastroenterología "Dr. Carlos B. Udaondo"; ArgentinaFil: Aguiar, Samuel. No especifíca;Fil: Nunes, Diana Noronha. No especifíca

    White book on physical and rehabilitation medicine (PRM) in Europe. Chapter 10. Science and research in PRM: Specificities and challenges

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    In the context of the White Book of Physical and Rehabilitation Medicine (PRM), this paper deals with Research, the future of PRM. PRM students and specialists are mainly involved in biomedical research, investigating the biological processes, the causes of diseases, their medical diagnosis, the evaluation of their consequences on functioning, disability and health and the effects of health interventions at an individual and a societal level. Most of the current PRM research, often interdisciplinary, originates from applied research which, using existing knowledge, is directed towards specific goals. Translational medical research, research and development, implementation research and clinical impact research are in this field. PRM physicians, mainly master or PhD students, are nowadays increasing their participation in basic research and in pre-clinical trials. PRM physicians are involved in primary research, which is an original first hand research, but also in secondary research, which is the analysis and interpretation of primary research publications in a field, with a specific methodology. Secondary research remains an important activity of the UEMS PRM section and it will be the field of the new created Cochrane Rehabilitation. Secondary research with interest for persons with disabilities, will be developed world wide on the basis of evidence based medicine, with the participation of PRM physicians and of all other health and social professionals involved in rehabilitation. The development of research activities with interest for PRM in Europe is a challenge for the future, which has to be faced now. The European PRM schools, the European master and PhD program with their supporting research and clinical facilities, the European PRM organizations with their websites, the PRM scientific journals and European congresses are a strong basis to develop research activities, together with the development of Cochrane Rehabilitation field and of our cooperation with European high level research facilities, European and international scientific societies in different fields. PRM will be a leader in this field of research

    Serpentine Soils Do Not Limit Mycorrhizal Fungal Diversity

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    Background: Physiologically stressful environments tend to host depauperate and specialized biological communities. Serpentine soils exemplify this phenomenon by imposing well-known constraints on plants; however, their effect on other organisms is still poorly understood. Methodology/Principal Findings: We used a combination of field and molecular approaches to test the hypothesis that serpentine fungal communities are species-poor and specialized. We conducted surveys of ectomycorrhizal fungal diversity from adjacent serpentine and non-serpentine sites, described fungal communities using nrDNA Internal Transcribed Spacer (ITS) fragment and sequence analyses, and compared their phylogenetic community structure. Although we detected low fungal overlap across the two habitats, we found serpentine soils to support rich fungal communities that include representatives from all major fungal lineages. We failed to detect the phylogenetic signature of endemic clades that would result from specialization and adaptive radiation within this habitat. Conclusions/Significance: Our results indicate that serpentine soils do not constitute an extreme environment for ectomycorrhizal fungi, and raise important questions about the role of symbioses in edaphic tolerance and the maintenanc
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