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This report describes multidisciplinary care combining orthodontics and restorative dentistry for a patient with Class II occlusion and stained mandibular and maxillary resin composite veneers. The orthodontic treatment improved severe overjet and malocclusion prior to restorative care. Occlusal assessment was provided with a novel digital device (PlaneSystem, Zirkonzahn) that is integrated with digital workflows for the evaluation of the occlusal plane and condylar path inclination. Diagnostic digital impressions and digital wax-up for intraoral mock-ups led to the patient's treatment acceptance. Minimally invasive tooth preparation, final digital impressions, and bonding under dental dam isolation fulfilled the patient's esthetic and functional demands with all-ceramic restorations.

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The Natural Semantic Networks (NSN) model is highly useful in analyzing the words that define a concept in terms of the value, strength, weight, or density that a specific population assigns to the construction of a learned concept. The main objective of this study was to describe the conceptualization of the concept of neurorehabilitation by Spanish physiotherapists specializing in this field using NSN. A phenomenological study is presented. The participants were physiotherapy professionals who graduated from three Spanish universities and were working in the field of neurorehabilitation. A questionnaire was administered via Google Forms, which was constructed using the NSN technique. A total of 191 physiotherapists participated in this study. The Spanish physiotherapists interviewed used a total of 1247 defining words for the concept of neurorehabilitation. The semantic core of the concept was mainly formed by the words 'treatment', 'recovery', 'functionality', 'neuroplasticity', and 'learning', which carried significant weight. Results were also presented taking into account the academic level and years of professional experience of the sample. The semantic network observed in this study allows us to elucidate the polysemy of the concept of neurorehabilitation, which is composed not only of certain associated words but also the meanings they imply.

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The literature has reported the isolation of arsenate-dependent growing microorganisms which lack a canonical homolog for respiratory arsenate reductase, ArrAB. We recently isolated an arsenate-dependent growing bacterium from volcanic arsenic-bearing environments in Northern Chile, Fusibacter sp. strain 3D3 (Fas) and studied the arsenic metabolism in this Gram-positive isolate. Features of Fas deduced from genome analysis and comparative analysis with other arsenate-reducing microorganisms revealed the lack of ArrAB coding genes and the occurrence of two arsC genes encoding for putative cytoplasmic arsenate reductases named ArsC-1 and ArsC-2. Interestingly, ArsC-1 and ArsC-2 belong to the thioredoxin-coupled family (because of the redox-active disulfide protein used as reductant), but they conferred differential arsenate resistance to the E. coli WC3110 ΔarsC strain. PCR experiments confirmed the absence of arrAB genes and results obtained using uncouplers revealed that Fas growth is linked to the proton gradient. In addition, Fas harbors ferredoxin-NAD+ oxidoreductase (Rnf) and electron transfer flavoprotein (etf) coding genes. These are key molecular markers of a recently discovered flavin-based electron bifurcation mechanism involved in energy conservation, mainly in anaerobic metabolisms regulated by the cellular redox state and mostly associated with cytoplasmic enzyme complexes. At least three electron-bifurcating flavoenzyme complexes were evidenced in Fas, some of them shared in conserved genomic regions by other members of the Fusibacter genus. These physiological and genomic findings permit us to hypothesize the existence of an uncharacterized arsenate-dependent growth metabolism regulated by the cellular redox state in the Fusibacter genus.

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Serology testing for COVID-19 is important in evaluating active immune response against SARS-CoV-2, studying the antibody kinetics, and monitoring reinfections with genetic variants and new virus strains, in particular, the duration of antibodies in virus-exposed individuals and vaccine-mediated immunity. In this study, recombinant S protein of SARS-CoV-2 was expressed in Rachiplusia nu, an important agronomic plague. One gram of insect larvae produces an amount of S protein sufficient for 150 determinations in the ELISA method herein developed. We established a rapid production process for SARS-CoV-2 S protein that showed immunoreactivity for anti-SARS-CoV-2 antibodies and was used as a single antigen for developing the ELISA method with high sensitivity (96.2%) and specificity (98.8%). Our findings provide an efficient and cost-effective platform for large-scale S protein production, and the scale-up is linear, thus avoiding the use of complex equipment like bioreactors.

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Tailed bacteriophages are one of the most widespread biological entities on Earth. Their singular structures, such as spikes or fibers are of special interest given their potential use in a wide range of biotechnological applications. In particular, the long fibers present at the termini of the T4 phage tail have been studied in detail and are important for host recognition and adsorption. Although significant progress has been made in elucidating structural mechanisms of model phages, the high-resolution structural description of the vast population of marine phages is still unexplored. In this context, we present here the crystal structure of C24, a putative receptor-binding tip-like protein from Bizionia argentinensis JUB59, a psychrotolerant bacterium isolated from the marine surface waters of Potter Cove, Antarctica. The structure resembles the receptor-binding tip from the bacteriophage T4 long tail fiber yet showing marked differences in its domain organization, size, sequence identity and metal binding nature. We confirmed the viral origin of C24 by induction experiments using mitomycin C. Our results reveal the presence of a novel uncharacterized prophage in the genome of B. argentinensis JUB59, whose morphology is compatible with the order Caudovirales and that carries the nucleotide sequence of C24 in its genome. This work provides valuable information to expand our current knowledge on the viral machinery prevalent in the oceans.

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BACKGROUND AND OBJECTIVE: The use of fibrinogen concentrate to treat or prevent major bleeding with regard to potential adverse reactions has not been free of controversy. Our objective was to perform a post-authorization safety study to describe the use of Clottafact® (LFB Biomedicaments) fibrinogen concentrate in real-life medical practice in Mexico. METHODS: This was a prospective, observational study that collected and evaluated information between January 2017 and June 2019 related to suspected serious adverse reactions (SUSARs) during and after Clottafact® infusion. RESULTS: Information from 40 subjects was analyzed; 43% were women (n = 17), mean age was 39.05 ± 26.8 years (range 0-91 years). The medical specialties included in this analysis were cardiac surgery - 52.5% of the cases, gynecology/obstetrics - 17.5%, general surgery and orthopedics - 12.5% each, and hematology and neurosurgery - 2.5%, respectively. Mean plasma fibrinogen levels before and after Clottafact® infusion were 2.58 g/L and 4.02 g/L; p = 0.001, respectively. The mean Clottafact® dose was 2.20 ± 0.77 g. One patient presented SUSARs (dry mouth and dysgeusia) with drug administration, which ceased after treatment discontinuation. CONCLUSIONS: In this real-life post-marketing study, the safety profile of Clottafact® was very similar to previous reports. Thus, Clottafact® shows a favorable safety profile in clinical practice.

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INTRODUCCIÓN: Los tumores paratesticulares representan del 7%-10% de las masas intraescrotales. Los sarcomas abarcan el 90% de las lesiones malignas del cordón espermático y de éstas, aproximadamente, el 3%-7% son liposarcomas. CASO CLÍNICO: Presentamos el caso de un varón de 45 años, que consultó en urgencias por una masa inguinoescrotal derecha no reductible, diagnosticándose de hernia inguinal incarcerada. Se realizó cirugía urgente evidenciando una gran tumoración de aspecto lipomatoso, dependiente de cordón espermático. Se realizó orquiectomía y hernioplastía inguinal. La anatomía patológica, reveló un liposarcoma bien diferenciado de cordón espermático. Posteriormente, se realizó estudio de extensión, sin afectación a distancia y no precisó tratamiento adyuvante. Actualmente, tras dos años de seguimiento no ha presentado recidiva. DISCUSIÓN: Sólo alrededor de 200 casos han sido comunicados previamente en la literatura y sólo 61 de éstos se presentaron simulando una hernia inguinal incarcerada. Debido a la baja incidencia de esta patología es difícil de conocer la historia natural y llegar a conclusiones sobre los resultados del tratamiento, el cual hasta el momento sigue siendo la orquiectomía radical, con escisión amplia de los tejidos locales. El papel de la radio y quimioterapia aun es controvertido. CONCLUSIONES: Los sarcomas del cordón espermático son neoplasias raras con alta tasa de recurrencia local. Su manejo inicial es quirúrgico. Se requiere de un alto índice de sospecha clínica para el diagnóstico ya que las implicaciones oncológicas varían en función del tratamiento que, en ocasiones, es llevado a cabo por cirujanos generales al simular una hernia inguinal.

INTRODUCTION: Paratesticular tumors represent 7%-10% of intraescrotal masses. Sarcomas account for 90% of malignant lesions of the spermatic cord and of these approximately 3%-7% are liposarcomas. CLINICAL CASE: This is the case of a 45 year old male who consulted in the emergency department for a non-reducible right inguino-scrotal mass and was diagnosed with an incarcerated inguinal hernia. Emergency surgery was performed which revealed a large lipomatous tumor, originating from the spermatic cord. Orchiectomy and hernioplasty were performed. Histopathology revealed a well-differentiated liposarcoma of the spermatic cord. Later extension study was conducted, without distant affectation, and did not require adjuvant treatment. Today, after two years of monitoring has been no recurrence. DISCUSSION: Only about 200 cases have been previously reported in the literature and only 61 of these were presented mimicking an incarcerated inguinal hernia. Due to the low incidence of this disease it is difficult to know the natural history and draw conclusions on the results of treatment, which so far remains the radical orchiectomy with wide local excision of the tissue. The role of radiotherapy and chemotherapy is still controversial

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La desprogramación neuromuscular juega un papel importante en el tratamiento de la disfunción temporomandibular, uno de los principales inconvenientes es el periodo prolongado del tratamiento, lo cual influye en la aceptación del paciente o el abandono del tratamiento. El diagnóstico es crucial para planificar el tratamiento ya que cubre una amplia gama de variables para tratarlo, por lo que en este caso es un paciente dolicofacial, con problemas de disfunción temporomandibular de origen muscular, por lo cual se optó por utilizar laserterapia de bajo nivel como coadyuvante de tratamiento, dando como resultado una mejor aceptación y colaboración de la desprogramación del paciente en un periodo de tiempo más corto (AU)

Neuromuscular deprogramming plays an important role in the treatment of temporomandibular dysfunction, one of the main drawbacks is the prolonged period of treatment, which influences the acceptance of the patient or the abandonment of treatment. The diagnosis is crucial to plan the treatment since it covers a wide range of variables to treat it, so in this case it is a dolichofacial patient, with problems of temporomandibular dysfunction of muscular origin, which is why we chose to use low-level laser therapy, level as a coadjutant of treatment, resulting in a better acceptance and collaboration of the deprogramming of the patient in a shorter period of time (AU)

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Los arbovirus constituyen una de las principales causas de emergencia en salud por la morbilidad y mortalidad que producen y el estrés sanitario que conllevan. Cuba no ha estado excenta de riesgo, y el enfrentamiento del dengue inicialmente y de otros arbovirus después, ha sido, y es, una prioridad de las máximas autoridades del país. La vigilancia de laboratorio de dengue se estableció desde inicios de la década del 70 aunque sus objetivos y estrategias han cambiado según la situación epidemiológica nacional y regional y la tecnología de diagnóstico disponible. Se destacan cuatro etapas en su desarrollo. En este trabajo se resumen las estrategias desarrolladas para la vigilancia de laboratorio de dengue y de otros arbovirus en el periodo de 1970 a 2017. Se describe además el papel desempeñado por el Instituto de Medicina Tropical, ¨Pedro Kouri¨ (IPK) como Laboratorio Nacional de Referencia(AU)

Arboviruses are one of the leading causes of health emergencies due to their morbidity and mortality and the sanitary stress they bring about. Cuba has not been free from risk, and the response first to dengue fever and then to other arboviruses has been and still is a priority for the country's top authorities. Laboratory surveillance of dengue fever was implemented in the 1970s, though its aims and strategies have evolved in keeping with the national and regional epidemiological situation, and the available diagnostic technology. Four stages stand out in the development of dengue laboratory surveillance. The present paper summarizes the strategies developed for laboratory surveillance of dengue fever and other arboviruses in the period 1970-2017. A description is also provided of the role played by Pedro Kourí Tropical Medicine Institute (IPK) as a national reference laboratory(AU)

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