18 research outputs found

    Clonal chromosomal mosaicism and loss of chromosome Y in elderly men increase vulnerability for SARS-CoV-2

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    The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, COVID-19) had an estimated overall case fatality ratio of 1.38% (pre-vaccination), being 53% higher in males and increasing exponentially with age. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, we found 133 cases (1.42%) with detectable clonal mosaicism for chromosome alterations (mCA) and 226 males (5.08%) with acquired loss of chromosome Y (LOY). Individuals with clonal mosaic events (mCA and/or LOY) showed a 54% increase in the risk of COVID-19 lethality. LOY is associated with transcriptomic biomarkers of immune dysfunction, pro-coagulation activity and cardiovascular risk. Interferon-induced genes involved in the initial immune response to SARS-CoV-2 are also down-regulated in LOY. Thus, mCA and LOY underlie at least part of the sex-biased severity and mortality of COVID-19 in aging patients. Given its potential therapeutic and prognostic relevance, evaluation of clonal mosaicism should be implemented as biomarker of COVID-19 severity in elderly people. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, individuals with clonal mosaic events (clonal mosaicism for chromosome alterations and/or loss of chromosome Y) showed an increased risk of COVID-19 lethality

    Higher COVID-19 pneumonia risk associated with anti-IFN-α than with anti-IFN-ω auto-Abs in children

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    We found that 19 (10.4%) of 183 unvaccinated children hospitalized for COVID-19 pneumonia had autoantibodies (auto-Abs) neutralizing type I IFNs (IFN-alpha 2 in 10 patients: IFN-alpha 2 only in three, IFN-alpha 2 plus IFN-omega in five, and IFN-alpha 2, IFN-omega plus IFN-beta in two; IFN-omega only in nine patients). Seven children (3.8%) had Abs neutralizing at least 10 ng/ml of one IFN, whereas the other 12 (6.6%) had Abs neutralizing only 100 pg/ml. The auto-Abs neutralized both unglycosylated and glycosylated IFNs. We also detected auto-Abs neutralizing 100 pg/ml IFN-alpha 2 in 4 of 2,267 uninfected children (0.2%) and auto-Abs neutralizing IFN-omega in 45 children (2%). The odds ratios (ORs) for life-threatening COVID-19 pneumonia were, therefore, higher for auto-Abs neutralizing IFN-alpha 2 only (OR [95% CI] = 67.6 [5.7-9,196.6]) than for auto-Abs neutralizing IFN-. only (OR [95% CI] = 2.6 [1.2-5.3]). ORs were also higher for auto-Abs neutralizing high concentrations (OR [95% CI] = 12.9 [4.6-35.9]) than for those neutralizing low concentrations (OR [95% CI] = 5.5 [3.1-9.6]) of IFN-omega and/or IFN-alpha 2

    Risk profiles and one-year outcomes of patients with newly diagnosed atrial fibrillation in India: Insights from the GARFIELD-AF Registry.

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    BACKGROUND: The Global Anticoagulant Registry in the FIELD-Atrial Fibrillation (GARFIELD-AF) is an ongoing prospective noninterventional registry, which is providing important information on the baseline characteristics, treatment patterns, and 1-year outcomes in patients with newly diagnosed non-valvular atrial fibrillation (NVAF). This report describes data from Indian patients recruited in this registry. METHODS AND RESULTS: A total of 52,014 patients with newly diagnosed AF were enrolled globally; of these, 1388 patients were recruited from 26 sites within India (2012-2016). In India, the mean age was 65.8 years at diagnosis of NVAF. Hypertension was the most prevalent risk factor for AF, present in 68.5% of patients from India and in 76.3% of patients globally (P < 0.001). Diabetes and coronary artery disease (CAD) were prevalent in 36.2% and 28.1% of patients as compared with global prevalence of 22.2% and 21.6%, respectively (P < 0.001 for both). Antiplatelet therapy was the most common antithrombotic treatment in India. With increasing stroke risk, however, patients were more likely to receive oral anticoagulant therapy [mainly vitamin K antagonist (VKA)], but average international normalized ratio (INR) was lower among Indian patients [median INR value 1.6 (interquartile range {IQR}: 1.3-2.3) versus 2.3 (IQR 1.8-2.8) (P < 0.001)]. Compared with other countries, patients from India had markedly higher rates of all-cause mortality [7.68 per 100 person-years (95% confidence interval 6.32-9.35) vs 4.34 (4.16-4.53), P < 0.0001], while rates of stroke/systemic embolism and major bleeding were lower after 1 year of follow-up. CONCLUSION: Compared to previously published registries from India, the GARFIELD-AF registry describes clinical profiles and outcomes in Indian patients with AF of a different etiology. The registry data show that compared to the rest of the world, Indian AF patients are younger in age and have more diabetes and CAD. Patients with a higher stroke risk are more likely to receive anticoagulation therapy with VKA but are underdosed compared with the global average in the GARFIELD-AF. CLINICAL TRIAL REGISTRATION-URL: http://www.clinicaltrials.gov. Unique identifier: NCT01090362

    Necesidades de tratamiento periodontal en adultos de la región rural mixteca del estado de puebla, méxico

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    Objetivo Determinar las necesidades de tratamiento periodontal (NTP) utilizando el Índice Comunitario de Necesidades de Tratamiento Periodontal (ICNTP) en una muestra de habitantes de la región Mixteca del estado de Puebla. Material y Métodos Se realizó un estudio transversal en el que se incluyeron 50 pacientes de la clínica rural de Nativitas Cautempan, Puebla., México. Para determinar el estado de salud periodontal se utilizaron el Índice Gingival y el Índice Comunitario de Necesidades de Tratamiento Periodontal propuesto por la Organización Mundial de la Salud y la Federación Dental Internacional, aplicados por el mismo investigador previamente capacitado y estandarizado. En el análisis, se calculó media y desviación estándar para las variables cuantitativas y frecuencias y proporciones para las variables categóricas. Resultados La edad promedio fue 37,6±13,6 años. El 60,0 % fueron mujeres, cuya principal ocupación fue amas de casa (46,0 %). El 14 % fueron campesinos. El índice gingival reportó 50,0 %, 32,0 % y 14,0 % para gingivitis leve, moderada y severa, respectivamente. Los sextantes posteriores superiores presentaron mas comúnmente bolsas de 4 a 5 mm, los sextantes anteriores, cálculo y los posteriores inferiores cálculo y hemorragia. El 94,0 % de los pacientes requiere tratamiento periodontal en un promedio de 3,6 sextantes por paciente. Conclusiones Las necesidades de tratamiento periodontal fueron altas en este estudio, nueve de cada diez pacientes de la región Mixteca del Estado de Puebla lo requieren. Es necesario encaminar esfuerzos con el fin de mejorar la salud bucal en las comunidades indígena

    Epitope spreading driven by the joint action of CART cells and pharmacological STING stimulation counteracts tumor escape via antigen-loss variants

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    Background Target antigen (Ag) loss has emerged as a major cause of relapse after chimeric antigen receptor T (CART)-cell therapy. We reasoned that the combination of CART cells, with the consequent tumor debulking and release of Ags, together with an immunomodulatory agent, such as the stimulator of interferon gene ligand (STING-L) 2 ' 3 '-cyclic GMP-AMP (2 ' 3 '-cGAMP), may facilitate the activation of an endogenous response to secondary tumor Ags able to counteract this tumor escape mechanism. Methods Mice bearing B16-derived tumors expressing prostate-specific membrane Ag or gp75 were treated systemically with cognate CART cells followed by intratumoral injections of 2 ' 3 '-cGAMP. We studied the target Ag inmunoediting by CART cells and the effect of the CART/STING-L combination on the control of STING-L-treated and STING-L-non-treated tumors and on the endogenous antitumor T-cell response. The role of Batf3-dependent dendritic cells (DCs), stimulator of interferon gene (STING) signaling and perforin (Perf)-mediated killing in the efficacy of the combination were analyzed. Results Using an immune-competent solid tumor model, we showed that CART cells led to the emergence of tumor cells that lose the target Ag, recreating the cancer immunoediting effect of CART-cell therapy

    Estudios de derecho penal. Libro homenaje a Juan Fernández Carrasquilla

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    El Departamento de Derecho Penal de la Facultad de Derecho de la Universidad de Medellín, con ocasión del septuagésimo aniversario del nacimiento de uno de sus más egregios exponentes -el Profesor Dr. Juan Fernández Carrasquilla, quien impartió las cátedras de Filosofía del Derecho y Derecho penal en esta casa de estudios, la segunda por un lapso superior a 3 lustros- se propuso, en el año 2010, jalonar la elaboración de una obra colectiva destinada a la conmemoración de dicha efemérides y, en consecuencia, rendir tributo y merecido homenaje al autor en cuestión. Habida cuenta las calidades científicas y académicas del profesor Fernández C., de sobra conocidas en el medio, la propuesta rápidamente fue acogida no solo por el grupo de profesores que conforman el Departamento de Derecho Penal de la Universidad de Medellín, sino también por una pléyade de autores colombianos y de otras latitudes que de forma generosa e incondicional quisieron unirse al proyecto original, a quienes, obligado es decirlo, vaya desde ya nuestro sincero y eterno sentimiento de gratitud -de hecho, nos consta que no pocos otros autores nacionales y extranjeros hubieran querido participar; sin embargo, como suele ocurrir en este tipo de obras, ello no fue posible habida cuenta los tiempos establecidos por el editor-o Así las cosas, profesores de Alemania, Argentina, Brasil. Chile, Ecuador, España, Italia, Venezuela y, desde luego, otras universidades colombianas, respondieron a nuestra invitación de manera afirmativa y de forma completamente desinteresada se unieron a la propuesta inicial, colaborando incluso de forma proactiva al buen éxito de la misma
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