The Lymphocytes Stimulation Induced DNA Release, a Phenomenon Similar to NETosis.

The release of DNA into the extracellular milieu by neutrophil during a process called NETosis has been postulated as an additional source of autoantigens; a process believed to be important in the pathogenesis of some autoimmune disease, such as systemic lupus erythematosus (SLE). However, it is not established if the B and T cells undergo the release of DNA to the extracellular milleu, in response to different stimuli. In this study, it was observed that the treatment of B and T cells with PMA, ionomycin and the serum from patients with SLE induced the extracellular DNA presence in B and T cells. These findings suggest that the phenomenon were similar to those observed in neutrophil's Etosis; B and T cells also released their DNA into the extracellular milieu. The findings express that serum from patients with SLE and SLEDAI ≤ 8 triggers the release of extracellular DNA in neutrophils, B and T cells, that suggested the presence of soluble factors in the serum that favoured this phenomenon.

[Primary hip replacement: first year results and predictive factors of poor outcome]. / Artroplastia primaria de cadera: resultados en el primer año y factores predictores de mala evolución.

OBJECTIVE: To evaluate the results of total hip arthroplasty in patients with osteoarthritis and to identify predictors of poor functional outcome. MATERIAL AND METHODS: A prospective observational study in patients operated on in 2006 with total hip arthroplasty in 4 hospitals in Guipúzcoa, followed up for 1 year. OUTCOME VARIABLES: pain, physical function, complications, mortality, quality of life by WOMAC and SF-12 (at 0, 3, 6 and 12 months) and «Poor functional outcome¼ at one year (last quartile of the WOMAC in function area). Logistic regression was performed to examine predictors of poor functional outcome. RESULTS: A total of 166 patients were followed up. The incidence of systemic and local complications was 6.3% and 14.5%, respectively, 4.3% readmissions and no deaths related to surgery. Close to 40 points improvement in pain, stiffness and WOMAC functional limitation, mainly in the first 3 months after surgery. A similar trend was seen, but lower in the physical and mental component of the SF12 (12 and 8 points, respectively). The previous score on the WOMAC function area and the physical component of SF-12, and the existence of any complications, are predictors of poor functional recovery. DISCUSSION: The improvement experienced after the surgery is already very important before the third month. The functional and physical status before surgery and possible complications of surgery are significant determinants of the results.

Artroplastia primaria de cadera: resultados en el primer año y factores predictores de mala evolución / Primary hip replacement: first year results and predictive factors of poor outcome

Objetivo. Evaluar los resultados del primer año en la artroplastia total de cadera de pacientes con osteoartritis e identificar los factores predictores de mala evolución funcional. Material y método. Estudio observacional, prospectivo en pacientes intervenidos en 2006 con artroplastia total de cadera en 4 hospitales de Guipúzcoa, seguidos durante un año. Variables de resultado: dolor, función física, complicaciones, mortalidad, calidad de vida mediante WOMAC y SF-12 (a 0, 3, 6 y 12 meses) y «mal resultado funcional» al año (último cuartil del WOMAC en área de función). Mediante regresión logística se estudiaron los factores predictores de mal resultado funcional. Resultados. Se incluyeron 166 pacientes. La incidencia de complicaciones sistémicas y locales fue de 6,3 y 14,5%, respectivamente, con 4,3% de reingresos y sin fallecimientos relacionados con la cirugía. Mejoría cercana a 40 puntos en dolor, rigidez y limitación funcional del WOMAC, principalmente en los primeros tres meses postintervención. Evolución similar, pero inferior en el componente físico y mental del SF12 (12 y 8 puntos respectivamente). La puntuación previa en el área de función de WOMAC y en el componente físico del SF-12, así como la existencia de alguna complicación, son factores predictores de la mala recuperación funcional. Discusión. La mejoría experimentada tras la intervención es ya muy relevante antes del tercer mes. La situación funcional y física previa a la intervención y las posibles complicaciones de la cirugía son factores determinantes de los resultados (AU)

Objective. To evaluate the results of total hip arthroplasty in patients with osteoarthritis and to identify predictors of poor functional outcome. Material and methods. A prospective observational study in patients operated on in 2006 with total hip arthroplasty in 4 hospitals in Guipúzcoa, followed up for 1 year. Outcome variables: pain, physical function, complications, mortality, quality of life by WOMAC and SF-12 (at 0, 3, 6 and 12 months) and «Poor functional outcome» at one year (last quartile of the WOMAC in function area). Logistic regression was performed to examine predictors of poor functional outcome. Results. A total of 166 patients were followed up. The incidence of systemic and local complications was 6.3% and 14.5%, respectively, 4.3% readmissions and no deaths related to surgery. Close to 40 points improvement in pain, stiffness and WOMAC functional limitation, mainly in the first 3 months after surgery. A similar trend was seen, but lower in the physical and mental component of the SF12 (12 and 8 points, respectively). The previous score on the WOMAC function area and the physical component of SF-12, and the existence of any complications, are predictors of poor functional recovery. Discussion. The improvement experienced after the surgery is already very important before the third month. The functional and physical status before surgery and possible complications of surgery are significant determinants of the results (AU)

[Pre and post-operative autotransfusion. A comparative study of hematology, biochemistry and red cell metabolism in pre-donated blood and blood from post-operative surgical drainage]. / Autotransfusión pre y postoperatoria. Estudio comparativo de la hematología, bioquímica y metabolismo eritrocitario en sangre predonada y sangre de drenaje postoperatorio.

PURPOSE: The widespread use of aggressive surgical procedures, along with the increasing incidence of traffic accidents, has raised the necessity of homologous blood beyond the supplies of blood banks. This fact, plus the risks of homologous transfusion and the costs of blood bank maintenance, has prompted the advance of blood saving procedures such as autotransfusion, both in the pre-deposit (preoperative autotransfusion, POA) and the surgical drainage reinfusion (postoperative autotransfusion, SDR) modalities. As there is some controversy about the use of one or the other of the above procedures, the purposes of this study were: 1) to analyse the haematological and biochemical characteristics of blood, both pre-donated and stored at 4 degrees C for 4 weeks, and that recovered from surgical drains, from patients subjected to programmed orthopaedic or heart surgery; 2) to assess the metabolic and functional state of red cells attained from that blood, and 3) to compare the results achieved. MATERIAL AND METHODS: The following data were examined: red cell count, haematocrit, haemoglobin, red cell indicates, white cell count, platelet count, free plasma haemoglobin, red cell morphology, glucose, cholesterol, triglycerides, phospholipids, serum proteins and their fractions, ions, histamine, red cell glucose and amino acid transport, and ATP and 2,3-DPG content. RESULTS: The red cells, haemoglobin and haematocrit concentrations in POA blood did not show significant variations during the storage for 4 weeks and their values were significantly higher than found in drained blood. The biochemical values showed heterogeneous variations. Glucose and amino acid uptake by red cells of POA blood slightly decreased in the first 2 weeks of storage but always less than measured in SDR red cells. In POA blood it was noticed a progressive decrease in intra-erythrocytic ATP and 2,3 DPG, those levels being normal in SDR. DISCUSSION: In spite of lower haematocrit and haemoglobin but higher free plasma haemoglobin content, drained blood had higher ATP and 2,3-DPG concentration than pre-deposit, stored blood. Drained blood showed also less ion alterations and probably a lesser immunosuppressor capability. Thus, postoperative blood recovery seems a good source of red cell, with high oxygen transport power, and so, alone or in combination with pre-donated blood, it may contribute to reduce the necessities for homologous blood and decrease its risks.