Critical warm ischemia time point for cardiac donation after circulatory death.

Donation after circulatory death (DCD) represents a promising opportunity to overcome the relative shortage of donors for heart transplantation. However, the necessary period of warm ischemia is a concern. This study aims to determine the critical warm ischemia time based on in vivo biochemical changes. Sixteen DCD non-cardiac donors, without cardiovascular disease, underwent serial endomyocardial biopsies immediately before withdrawal of life-sustaining therapy (WLST), at circulatory arrest (CA) and every 2 min thereafter. Samples were processed into representative pools to assess calcium homeostasis, mitochondrial function and cellular viability. Compared to baseline, no significant deterioration was observed in any studied parameter at the time of CA (median: 9 min; IQR: 7-13 min; range: 4-19 min). Ten min after CA, phosphorylation of cAMP-dependent protein kinase-A on Thr197 and SERCA2 decreased markedly; and parallelly, mitochondrial complex II and IV activities decreased, and caspase 3/7 activity raised significantly. These results did not differ when donors with higher WLST to CA times (≥9 min) were analyzed separately. In human cardiomyocytes, the period from WLST to CA and the first 10 min after CA were not associated with a significant compromise in cellular function or viability. These findings may help to incorporate DCD into heart transplant programs.Fundación Mutua Madrileña.S

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

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

Cualificación en los Objetivos establecidos en la Agenda 2030 de estudiantes y profesores en el Máster Universitario en Profesor de Educación Secundaria Obligatoria y Bachillerato, Formación Profesional y Enseñanza de Idiomas (MUPES)

Memoria ID2022-157 Ayudas de la Universidad de Salamanca para la innovación docente, curso 2022-2023

Estrés oxidativo en cirugía cardíaca de sustitución valvular con isquemia: relación con la función cardiovascular postoperatoria / Rubén Jara Rubio ; director Luis F. Carbonell Meseguer, José Galcerá Tomás, Enrique Serrano Meseguer.

Tesis-Universidad de Murcia.MEDICINA ESPINARDO. DEPOSITO. MU-Tesis 713.Consulte la tesis en: BCA. GENERAL. ARCHIVO UNIVERSITARIO. T.M.-2284

Polymorphisms in ACE, ACE2, AGTR1 genes and severity of COVID-19 disease.

Infection by the SARS-Cov-2 virus produces in humans a disease of highly variable and unpredictable severity. The presence of frequent genetic single nucleotide polymorphisms (SNPs) in the population might lead to a greater susceptibility to infection or an exaggerated inflammatory response. SARS-CoV-2 requires the presence of the ACE2 protein to enter in the cell and ACE2 is a regulator of the renin-angiotensin system. Accordingly, we studied the associations between 8 SNPs from AGTR1, ACE2 and ACE genes and the severity of the disease produced by the SARS-Cov-2 virus. 318 (aged 59.6±17.3 years, males 62.6%) COVID-19 patients were grouped based on the severity of symptoms: Outpatients (n = 104, 32.7%), hospitalized on the wards (n = 73, 23.0%), Intensive Care Unit (ICU) (n = 84, 26.4%) and deceased (n = 57, 17.9%). Comorbidity data (diabetes, hypertension, obesity, lung disease and cancer) were collected for adjustment. Genotype distribution of 8 selected SNPs among the severity groups was analyzed. Four SNPs in ACE2 were associated with the severity of disease. While rs2074192 andrs1978124showed a protector effectassuming an overdominant model of inheritance (G/A vs. GG-AA, OR = 0.32, 95%CI = 0.12-0.82; p = 0.016 and A/G vs. AA-GG, OR = 0.37, 95%CI: 0.14-0.96; p = 0.038, respectively); the SNPs rs2106809 and rs2285666were associated with an increased risk of being hospitalized and a severity course of the disease with recessive models of inheritance (C/C vs. T/C-T/T, OR = 11.41, 95% CI: 1.12-115.91; p = 0.012) and (A/A vs. GG-G/A, OR = 12.61, 95% CI: 1.26-125.87; p = 0.0081). As expected, an older age (OR = 1.47), male gender (OR = 1.98) and comorbidities (OR = 2.52) increased the risk of being admitted to ICU or death vs more benign outpatient course. Multivariable analysis demonstrated the role of the certain genotypes (ACE2) with the severity of COVID-19 (OR: 0.31, OR 0.37 for rs2074192 and rs1978124, and OR = 2.67, OR = 2.70 for rs2106809 and rs2285666, respectively). Hardy-Weinberg equilibrium in hospitalized group for I/D SNP in ACE was not showed (p<0.05), which might be due to the association with the disease. No association between COVID-19 disease and the different AGTR1 SNPs was evidenced on multivariable, nevertheless the A/A genotype for rs5183 showed an higher hospitalization risk in patients with comorbidities. Different genetic variants in ACE2 were associated with a severe clinical course and death groups of patients with COVID-19. ACE2 common SNPs in the population might modulate severity of COVID-19 infection independently of other known markers like gender, age and comorbidities.The work was in part supported by grants from Instituto de Salud Carlos III and FEDER Union Europea, Una forma de hacer Europa (FONDOCOVID19 COV20/00420). The group of researchers is part of the Cardiovascular Research Network (CIBERCV) and the CIBER of Rare Diseases (CIBERER). The research group in “Hereditary Heart Diseases and Sudden Death” is registered at the University of Murcia and the IMIB. The Family Heart Disease Unit of the Virgen de la Arrixaca University Clinical Hospital is accredited as a Reference Unit (CSUR) by the Ministry of Health and is part of the network of European reference centers included in Guard-Heart (ERN). María Sabater has a research contract from the FFIS (Foundation for Sanitary Training and Research).S

Estrategia farmacoinvasiva como tratamiento de reperfusión en áreas sin disponibilidad de angioplastia primaria

Introduction and objectives: Reperfusion therapy during an ST-segment elevation acute coronary syndrome (STEACS) can be performed using fibrinolytic agents or primary percutaneous coronary intervention (pPCI). The pPCI is the reperfusion strategy of choice, but many patients with STEACS initially come to non-PCI capable hospitals. Regional networks have been launched with both reperfusion therapies using thrombolysis in indicated cases followed by routine angiographic studies (pharmacoinvasive strategy). Our objective was to analyze the results of treatment in patients with STEACS in the Region of Murcia, Spain based on the patient’s place of origin. Methods: Retrospective study of a cohort of patients admitted due to STEACS to 3 health areas: pPCI-capable Area 1 (Hospital Clínico Universitario Virgen de la Arrixaca), and non-pPCI capable Areas IV and V (Hospital Comarcal del Noroeste, Caravaca de la Cruz, and Virgen del Castillo, Yecla). Results: Six hundred and seventy-nine patients from health areas I, IV, and V of the Region of Murcia were treated of STEACS from 2006 through 2010. Out of the 494 patients from Area I, 97.6% (482 patients) were treated with pPCI while 2.4% (12 cases) received thrombolysis. In Areas IV and V, 73% (135) of patients were treated with pPCI and 27% (50) with thrombolysis. After thrombolysis, 46 patients (34%) required rescue angioplasty and 79 (58.5%) underwent a scheduled coronary angiography (pharmacoinvasive strategy). No statistically significant differences were reported in the overall mortality rate at 30-day (8.3% in Area I vs 6% in Areas IV and V; P = .31) or 1 year follow-up (11.3% vs 8.2%; P = .23) in Area I compared to Areas IV and V, nor for cardiac mortality. Conclusions: Although immediate pPCIs are less accessible in remote health areas, the healthcare network from the Region of Murcia can achieve similar mortality results compared to populations with pPCI availability.Introducción y objetivos: El tratamiento de reperfusión en un síndrome coronario agudo con elevación del segmento ST (SCACEST) se puede realizar con agentes fibrinolíticos o con angioplastia primaria (ICPp). La ICPp es la estrategia de elección, pero muchos de los pacientes con SCACEST acuden inicialmente a hospitales sin ICPp. Se han desarrollado programas de asistencia al SCACEST en los que se integran ambos tratamientos, utilizando la trombolisis en casos indicados, seguida de un estudio angiográfico (estrategia farmacoinvasiva). El objetivo del estudio es analizar los resultados del tratamiento del SCACEST según sea diagnosticado en áreas de salud con o sin disponibilidad de ICPp inmediata. Métodos: Estudio retrospectivo de una cohorte de pacientes diagnosticados de SCACEST en 3 áreas de salud de Murcia: área I con ICPp (Hospital Clínico Universitario Virgen de la Arrixaca) y áreas IV y V sin ICPp (Hospital Comarcal del Noroeste, Caravaca de la Cruz y Virgen del Castillo, Yecla). Resultados: Entre 2006 y 2010 se atendió por SCACEST a 679 pacientes de las áreas I, IV y V de Murcia. De los 494 pacientes del área I, recibieron tratamiento con ICPp el 97,6% (482) y trombolisis el 2,4% (12). En los pacientes de las áreas sanitarias IV y V se realizó trombolisis al 73% (135) e ICPp al resto 27% (50). De los pacientes sometidos a trombolisis, el 34% (46) precisaron angioplastia de rescate y al 58,5% (79) se les realizó coronariografía programada (estrategia farmacoinvasiva). No hubo diferencias en la mortalidad total a 30 días (8,3% en el área I y 6% en las áreas IV y V; p = 0,31) ni al año (11,3 frente a 8,2%; p = 0,23); tampoco en la mortalidad por causa cardiaca. Conclusiones: A pesar de la menor accesibilidad a la ICPp en las áreas sanitarias más alejadas, la red asistencial regional de Murcia permite unos resultados comparables a los de las áreas sanitarias con disponibilidad de ICPp

Integrate and learn. Building a farm-to-table blockchain

DecanatoFac. de VeterinariaFALSEsubmitte