Papilla preservation periodontal surgery in periodontal reconstruction for deep combined intra-suprabony defects. Retrospective analysis of a registry-based cohort

Suprabony defects are the most prevalent defects and there is very little evidence on their treatment. This study aims to assess the effectiveness of papilla preservation periodontal surgery in the periodontal reconstruction of combined deep intra-suprab

Análisis de la expresión de marcadores tumorales en muestras de tumores humanos

Motivación: Los últimos datos de la OMS muestran una incidencia de 14,1 millones de casos nuevos de cáncer y 8,2 millones de muertes por cáncer en el mundo, siendo el cáncer de pulmón el principal causante de muerte por cáncer en hombres y el cáncer de mama en mujeres (1). En la actualidad existen varios test genómicos que han identificado huellas genómicas de tipos específicos de cáncer como Ampliseq, Oncotype Dx o MammaPrint, pero sólo unos pocos incluyen datos clínicos a parte de los genéticos. El análisis de expresión de los marcadores que forman dichos test permiten predecir la evolución del tumor o la respuesta a tratamiento (2). El objetivo del proyecto es generar un test genómico basado en una huella genómica de cáncer de mama de 40 genes y otro basado en una huella de 36 genes de adenocarcinoma de pulmón. Estos test permitirán estratificar a los pacientes en tres grupos de riesgo y predecir la supervivencia de los mismos (3). En paralelo pretendemos analizar la expresión de genes que codifican bombas de detoxificación implicadas en la resistencia a quimioterapia (MDR, multidrug resistance).Métodos: De los 75 genes incluidos en el análisis de expresión se seleccionaron por un lado 32 genes de cáncer de mama, 30 genes de adenocarcinoma de pulmón y 6 genes de expresión constitutiva usados en los test genómico-clínicos patentados de Dueñas y col. (3); por otro lado, se hizo una revisión bibliográfica para seleccionar genes de transportadores ABC. A partir de ADNc de las biopsias y los primers diseñados se analizará la expresión de los marcadores en una plataforma BioMark 96.96 IFC Dynamic Array (Fluidigm). Esta plataforma es barata, sencilla y permite analizar la expresión de hasta 96 genes de forma simultánea mediante PCR cuantitativa.Resultados: De momento hemos diseñado los primers para todos los marcadores y hemos amplificado mediante PCR estándar 65 de los 75 marcadores. A continuación, los productos de PCR serán secuenciados para confirmar que corresponden a los marcadores y se analizará su expresión en cada muestra tumoral mediante PCR cuantitativa.Conclusiones: El análisis estadístico de los datos de qRT-PCR de las muestras de tumores humanos permitirá conocer que genes se encuentran sobre-expresados y cuales reprimidos en cada tumor; pudiendo predecir la evolución de la enfermedad en cada paciente y diseñar protocolos de quimioterapia más eficientes, acercándonos a la medicina personalizada

End of life in patients with advanced non-curable cancer : patient considerations around the moment of death

Existe conocimiento limitado sobre pacientes colombianos con cáncer avanzado preferencias con respecto a sus momentos finales, lugar de muerte y deseos posteriores a la muerte. A Para comprender mejor estas preferencias, realizamos 23 entrevistas en profundidad con pacientes entre 28 y 78 años que reciben tratamiento en dos hospitales académicos y el Instituto Nacional del Cáncer. Si bien muchos participantes deseaban una muerte pacífica, pocos se sentían cómodos discutiendo directamente el tema de la muerte. Algunos participantes más jóvenes expresó interés en la eutanasia pero no había recibido ninguna orientación o apoyo. Si bien varios participantes prefirieron morir en el hogar, algunos expresaron el deseo de morir en un hospital debido a un mejor control de los síntomas. Además, cuando se habla de post-muerte deseos, algunos participantes expresaron frustración por no poder tener estos conversaciones con sus seres queridos y sus preferencias para los arreglos funerarios.Q3Q2There is limited knowledge regarding Colombian patients with advanced cancer preferences regarding their final moments, place of death, and post-death wishes. To better understand these preferences, we conducted 23 in-depth interviews with patients between the ages of 28 and 78 receiving treatment at two academic hospitals and the National Cancer Institute. While many participants desired a peaceful death, few were comfortable discussing the topic of death directly. Some younger participants expressed an interest in euthanasia but had not received any guidance or support. While several participants preferred a home death, some expressed a desire to die in a hospital due to better symptom control. Additionally, when discussing post-death wishes, some participants expressed frustration about being unable to have these conversations with their loved ones and their preferences for funeral arrangements.Revista Internacional - IndexadaS

Autonomic management of a building's multi-HVAC system start-up

Most studies about the control, automation, optimization and supervision of building HVAC systems concentrate on the steady-state regime, i.e., when the equipment is already working at its setpoints. The originality of the current work consists of proposing the optimization of building multi-HVAC systems from start-up until they reach the setpoint, making the transition to steady state-based strategies smooth. The proposed approach works on the transient regime of multi-HVAC systems optimizing contradictory objectives, such as the desired comfort and energy costs, based on the "Autonomic Cycle of Data Analysis Tasks" concept. In this case, the autonomic cycle is composed of two data analysis tasks: one for determining if the system is going towards the defined operational setpoint, and if that is not the case, another task for reconfiguring the operational mode of the multi-HVAC system to redirect it. The first task uses machine learning techniques to build detection and prediction models, and the second task defines a reconfiguration model using multiobjective evolutionary algorithms. This proposal is proven in a real case study that characterizes a particular multi-HVAC system and its operational setpoints. The performance obtained from the experiments in diverse situations is impressive since there is a high level of conformity for the multi-HVAC system to reach the setpoint and deliver the operation to the steady-state smoothly, avoiding overshooting and other non-desirable transitional effects.European CommissionJunta de Comunidades de Castilla-La ManchaMinisterio de Ciencia e Innovació

Neurocognitive profile of the post-COVID condition in adults in Catalonia. A mixed method prospective cohort and nested case-control study: Study Protocol

The diagnosis of the post-COVID condition is usually achieved by excluding other diseases; however, cognitive changes are often found in the post-COVID disorder. Therefore, monitoring and treating the recovery from the post-COVID condition is necessary to establish biomarkers to guide the diagnosis of symptoms, including cognitive impairment. Our study employs a prospected cohort and nested case-control design with mixed methods, including statistical analyses, interviews, and focus groups. Our main aim is to identify biomarkers (functional and structural neural changes, inflammatory and immune status, vascular and vestibular signs and symptoms) easily applied in primary care to detect cognitive changes in post-COVID cases. The results will open up a new line of research to inform diagnostic and therapeutic decisions with special considerations for cognitive impairment in the post-COVID condition

Pathological vertebral fracture after stereotactic body radiation therapy for lung metastases. Case report and literature review.

<p>Abstract</p> <p>Background</p> <p>Stereotactic body radiation therapy (SBRT) is a radiation technique used in patients with oligometastatic lung disease. Lung and chest wall toxicities have been described in the patients but pathological vertebral fracture is an adverse effect no reported in patients treated with SBRT for lung metastases.</p> <p>Case presentation</p> <p>A 68-year-old woman with the diagnosis of a recurrence of a single lung metastatic nodule of urothelial carcinoma after third line of chemotherapy. The patient received a hypo-fractionated course of SBRT.A 3D-conformal multifield technique was used with six coplanar and one non-coplanar statics beams. A total dose of 48 Gy in three fractions over six days was prescribed to the 95% of the CTV. Ten months after the SBRT procedure, a CT scan showed complete response of the metastatic disease without signs of radiation pneumonitis. However, rib and vertebral bone toxicities were observed with the fracture-collapse of the 7^thand 8^thvertebral bodies and a fracture of the 7^thand 8^thleft ribs. We report a unique case of pathological vertebral fracture appearing ten months after SBRT for an asymptomatic growing lung metastases of urothelial carcinoma.</p> <p>Conclusion</p> <p>Though SBRT allows for minimization of normal tissue exposure to high radiation doses SBRT tolerance for vertebral bone tissue has been poorly evaluated in patients with lung tumors. Oncologists should be alert to the potential risk of fatal bone toxicity caused by this novel treatment. We recommend BMD testing in all woman over 65 years old with clinical risk factors that could contribute to low BMD. If low BMD is demonstrated, we should carefully restrict the maximum radiation dose in the vertebral body in order to avoid intermediate or low radiation dose to the whole vertebral body.</p

The rkpU gene of Sinorhizobium fredii HH103 is required for bacterial K-antigen polysaccharide production and for efficient nodulation with soybean but not with cowpea

In this work, the role of the rkpU and rkpJ genes in the production of the K-antigen polysaccharides (KPS) and in the symbiotic capacity of Sinorhizobium fredii HH103, a broad host-range rhizobial strain able to nodulate soybean and many other legumes, was studied. The rkpJ- and rkpU-encoded products are orthologous to Escherichia coli proteins involved in capsule export. S. fredii HH103 mutant derivatives were contructed in both genes. To our knowledge, this is the first time that the role of rkpU in KPS production has been studied in rhizobia. Both rkpJ and rkpU mutants were unable to produce KPS. The rkpU derivative also showed alterations in its lipopolysaccharide (LPS). Neither KPS production nor rkpJ and rkpU expression was affected by the presence of the flavonoid genistein. Soybean (Glycine max) plants inoculated with the S. fredii HH103 rkpU and rkpJ mutants showed reduced nodulation and clear symptoms of nitrogen starvation. However, neither the rkpJ nor the rkpU mutants were significantly impaired in their symbiotic interaction with cowpea (Vigna unguiculata). Thus, we demonstrate for the first time to our knowledge the involvement of the rkpU gene in rhizobial KPS production and also show that the symbiotic relevance of the S. fredii HH103 KPS depends on the specific bacterium–legume interaction

2D-Tasks for Cognitive Rehabilitation

Neuropsychological Rehabilitation is a complex clinic process which tries to restore or compensate cognitive and behavioral disorders in people suffering from a central nervous system injury. Information and Communication Technologies (ICTs) in Biomedical Engineering play an essential role in this field, allowing improvement and expansion of present rehabilitation programs. This paper presents a set of cognitive rehabilitation 2D-Tasks for patients with Acquired Brain Injury (ABI). These tasks allow a high degree of personalization and individualization in therapies, based on the opportunities offered by new technologies

Pharmacology and preclinical validation of a novel anticancer compound targeting PEPCK-M

Background: Phosphoenolpyruvate carboxykinase (PEPCK) catalyzes the decarboxylation of oxaloacetate to phosphoenolpyruvate. The mitochondrial isozyme, PEPCK-M is highly expressed in cancer cells, where it plays a role in nutrient stress response. To date, pharmacological strategies to target this pathway have not been pursued. Methods: A compound embodying a 3-alkyl-1,8-dibenzylxanthine nucleus (iPEPCK-2), was synthesized and successfully probed in silico on a PEPCK-M structural model. Potency and target engagement in vitro and in vivo were evaluated by kinetic and cellular thermal shift assays (CETSA). The compound and its target were validated in tumor growth models in vitro and in murine xenografts. Results: Cross-inhibitory capacity and increased potency as compared to 3-MPA were confirmed in vitro and in vivo. Treatment with iPEPCK-2 inhibited cell growth and survival, especially in poor-nutrient environment, consistent with an impact on colony formation in soft agar. Finally, daily administration of the PEPCK-M inhibitor successfully inhibited tumor growth in two murine xenograft models as compared to vehicle, without weight loss, or any sign of apparent toxicity. Conclusion: We conclude that iPEPCK-2 is a compelling anticancer drug targeting PEPCK-M, a hallmark gene product involved in metabolic adaptations of the tumor

Extracellular cysteine disulfide bond break at Cys122 disrupts PIP2-dependent Kir2.1 channel function and leads to arrhythmias in Andersen-Tawil Syndrome

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