IFNAR2 relevance in the clinical outcome of individuals with severe COVID-19

Interferons (IFNs) are a group of cytokines with antiviral, antiproliferative, antiangiogenic, and immunomodulatory activities. Type I IFNs amplify and propagate the antiviral response by interacting with their receptors, IFNAR1 and IFNAR2. In COVID-19, the IFNAR2 (interferon alpha and beta receptor subunit 2) gene has been associated with the severity of the disease, but the soluble receptor (sIFNAR2) levels have not been investigated. We aimed to evaluate the association of IFNAR2 variants (rs2236757, rs1051393, rs3153, rs2834158, and rs2229207) with COVID-19 mortality and to assess if there was a relation between the genetic variants and/or the clinical outcome, with the levels of sIFNAR2 in plasma samples from hospitalized individuals with severe COVID-19. We included 1,202 subjects with severe COVID-19. The genetic variants were determined by employing Taqman® assays. The levels of sIFNAR2 were determined with ELISA in plasma samples from a subgroup of 351 individuals. The rs2236757, rs3153, rs1051393, and rs2834158 variants were associated with mortality risk among patients with severe COVID-19. Higher levels of sIFNAR2 were observed in survivors of COVID-19 compared to the group of non-survivors, which was not related to the studied IFNAR2 genetic variants. IFNAR2, both gene, and soluble protein, are relevant in the clinical outcome of patients hospitalized with severe COVID-19

Hip fracture co-management in the elderly in a tertiary referral hospital: A cohorts study

[ES] Introducción: La fractura de cadera del anciano es de los diagnósticos más prevalentes en los servicios de Traumatología, con gran impacto en términos clínicos, económicos y sociales. Nuestro objetivo es analizar el impacto clínico de un modelo de comanejo entre Traumatología y Medicina Interna para pacientes ancianos ingresados por fractura de cadera en un hospital de tercer nivel. Material y métodos: Cohortes retrospectivas de pacientes mayores de 65 años ingresados por fractura de cadera entre enero de 2005 y agosto de 2006 (cohorte HIST) sin modelo de comanejo, y entre enero de 2008 y agosto de 2010 (cohorte COFRAC) con dicho modelo. Se analizaron características demográficas, clínicas y quirúrgicas, incidencia de complicaciones, mortalidad y reingreso a los 30 días. Resultados: Se incluyó a 701 pacientes (471 HIST, 230 COFRAC). No hubo diferencias en edad, género, demora quirúrgica, tiempo y tipo de cirugía e intervención, estancia, deambulación al alta, consulta en urgencias ni reingreso o mortalidad a 30 días. Hubo diferencias en identificación de pluripatológicos (16,8 vs. 24,4%; p = 0,02), osteoporosis (3,9 vs. 7,6%; p = 0,03) o déficit motor (3,5 vs. 8,8%; p = 0,03), fármacos del tratamiento (3,7 ± 2,5 vs. 4,3 ± 3,2; p 0,01) y de función renal (44,5 vs. 97,3%; p < 0,01) y mortalidad intrahospitalaria (4,6 vs. 1,3%; p = 0,02). Conclusiones: El comanejo de pacientes ancianos ingresados por fractura de cadera permite mejorar la documentación de los problemas crónicos previos y el control de complicaciones hospitalarias y disminuye la mortalidad intrahospitalaria.[EN] Introduction: Hip fracture in the elderly is one of the most prevalent diagnoses in Orthopedic Surgery Departments. It has a great impact in medical, economic and social terms. Our objective is to analyze clinical impact of a co-management care model between orthopedic surgery and internal medicine departments for elderly patients admitted with hip fracture in a tertiary referral hospital. Material and methods: Retrospective cohort study of patients older than 65 years old admitted with hip fracture between January 2005-August 2006 (HIST cohort) without a co-management care model, and between January 2008-August 2010 (COFRAC cohort) with a co-manEdadment care model. Analysis of demographic, clinical and surgery characteristics, complications incidence and mortality and re-admissions at 30 days was made. Results: A total of 701 patients were included (471 HIST, 230 COFRAC). There were no differences in sex, gender, time to surgery, type of anesthesia and surgery, length of stay, ambulation at discharge and 30-days emergency room consultation, readmissions or mortality at 30 days. There were differences in identification of polypatological patients (16.8 vs. 24.4%, P = 0.02), presence of osteoporosis (3.9 vs. 7.6%, P = 0.03), motor deficit (3.5 vs. 8.8%, P = 0.03), number of chronic drugs (3.7 ± 2.5 vs. 4.3 ± 3.2, P 0.01) and renal failure at discharge (44.5 vs. 97.3%, P < 0.01) and hospital mortality (4.6 vs. 1.3%, P = 0.02). Conclusions: Co-management for elderly patients admitted with hip fracture provides a better information about previously chronic conditions, a higher control of hospital complications and decreases hospital mortality