L. Martínez-Alarcón

FoxP3 in peripheral blood is associated with operational tolerance in liver transplant patients during immunosuppression withdrawal.

Background. Human liver allografts do sometimes survive in a recipient after withdrawal of immunosuppression (IS), commonly referred to as “operational tolerance.” Preliminary clinical data have suggested an increase in the frequency of regulatory T cells (Treg) CD4+CD25high and FoxP3 expression in operationally tolerant liver transplant recipients (Gr-T). In the context of human liver transplantation, the dynamics of Treg have not been studied. We designed a prospective study to ascertain the profile of the Treg population and FoxP3 expression during IS withdrawal. Methods. To identify such parameters, we analyzed peripheral blood mononuclear cell populations and FoxP3 mRNA expression in 12 liver allograft recipients under cyclosporine A-based IS, who showed stable function of the allograft for more than 2 years. Results. An increase was observed in the frequency of CD4+CD25high cells when the IS was withdrawn in Gr-T patients (n=5). These patients exhibited a 3.5-fold increase for relative mRNA FoxP3 expression before the complete IS withdrawal and this continued when IS therapy was stopped. In patients who suffered rejection (n=7) there was no increase in the CD4+CD25high cells or FoxP3 expression. Conclusions. With the present study, the first evidence is provided that the increase of CD4+CD25high T cells and FoxP3 transcripts is associated with operational tolerance in liver transplanted patients during IS withdrawal.

German citizens in southeastern Spain: a study of attitude toward organ donation.

Ríos A, Martínez‐Alarcón L, Sánchez J, Jarvis N, Parrilla P, Ramírez P. German citizens in southeastern Spain: a study of attitude toward organ donation.
Clin Transplant 2010: 24: 349–357.

Primary health care personnel faced with cadaveric organ donation: a multicenter study in south-eastern Spain

Abstract:  Introduction:  Primary health care (PHC) is the first point of contact between the public and the health system and it is an important channel for the communication and promotion of organ donation and transplantation. The objective of this study was to analyze the attitude of PHC personnel toward donation and to determine the psychosocial variables affecting this attitude.

The Latin American population in Spain and organ donation. Attitude toward deceased organ donation and organ donation rates

The Latin American (LA) population has similarities with the Spanish population which makes its integration into Spanish society easier. Objective: to analyze the attitude toward organ donation among Latin American citizens residing in Spain, to determine the psychosocial variables which affect this attitude, and to examine the correlation between donation rates of LA citizens in Spain and in their countries of origin. A random sample of LA residents in Spain was taken and stratified according to the respondents nationality (n = 1.314), in the year 2010. Attitude was assessed using a validated questionnaire (PCID‐DTO Dr Rios). The survey was self‐administered and completed anonymously. Statistical analysis: Students t‐test, the χ2 test, and logistic regression analysis. There was a 94% completion rate (n = 1.237). Attitude toward donation was favorable in 60% of cases (n = 745), 12% (n = 145) were against, and 28% (n = 347) were undecided. The following variables were associated with attitude toward donation: sex (P = 0.038), level of formal education (P < 0.001), country of origin (P = 0.002), attitude toward the donation of a family members organs (P < 0.001), having discussed donation with the family (P < 0.001), carrying out prosocial activities (P = 0.025), attitude toward cremation of the body (P < 0.001), attitude toward burial of the body (P < 0.001), attitude toward having an autopsy carried out (P < 0.001), previous experience of the organ donation and transplantation process (P < 0.001), fear of mutilation after donation (P < 0.001), knowledge that the Church has a positive attitude toward organ donation and transplantation (P < 0.001), knowledge of ones partners attitude toward organ donation (P < 0.001), and a belief that one might need a transplant in the future (P < 0.001). The donation rates in this population group in Spain are higher than those recorded in their countries of origin (55.76 vs. <10 pmp; P < 0.001). The attitude toward organ donation among LA citizens residing in Spain is slightly worse than that reported in the native Spanish population and is determined by many psychosocial factors. The donation rates of LA citizens in Spain are higher than those in their countries of origin.

Attitude of kidney patients on the transplant waiting list toward related-living donation. A reason for the scarce development of living donation in Spain

Summary:  Introduction:  Most Spanish transplant centers have on‐going living kidney transplant programs. However, such transplants are not increasing as a proportion of the total number of kidney transplants. The objective of this study is to analyze the attitude of kidney patients on the kidney transplant waiting list toward living kidney donation.

Factors that influence the attitude of East European residents in Spain towards living kidney donation

Emigration from East European (EE) countries into the South East of Spain (SES) is becoming more common. The objective of this study was to analyse the attitude towards living kidney donation in this group. A sample of residents (n = 320) in the SES who come from EE was obtained randomly and stratified by a respondent’s nationality (November‐05 to April‐06). Attitude was evaluated using a validated questionnaire that was completed anonymously and was self‐administered. Control group: native Spanish citizens. The questionnaire completion rate was 83% (n = 265). A total of 83% (n = 220) were in favor of related living donation. Attitude is similar to that of the urban control group (P = 0.0534) and more positive than that prevalent in the rural setting (P < 0.001). The variables that were related to attitude included: a respondent’s marital status (P < 0.001); the country of origin (P = 0.014); attitude towards deceased donation (P < 0.001); having discussed the subject within the family (P < 0.001); a respondent’s belief that he might need a transplant organ (P = 0.002) and concern about possible ‘mutilation’ after donation (P < 0.001). There is a favorable attitude towards related living kidney donation among EE who are resident in the SES and this attitude is closely related to attitude towards deceased donation, the attitude of one’s family and feelings of reciprocity.

Validation of xCELLigence Real-Time Cell Analyzer to Assess Compatibility in Xenotransplantation With Pig-to-Baboon Model

OBJECTIVE To validate the use of a microelectronic real-time cell analyzer system (RTCA) we developed a complement-mediated antibody cytotoxicity assay to investigate the compatibility of a graft and a recipient in pig-to-baboon xenotransplantation. MATERIALS AND METHODS Fibroblasts isolated from the skin of five hCD55, hCD59, and hCD46 transgenic pigs (TP) were cultured in 96 microelectronic well plates for 17 hours. Then, we added to each microwell 20 μL of normal sera from nine healthy adult olive baboons (Papio anubis)-three males and six females. The evolution of the cell culture was assessed every 3 minutes during the pretreatment period, at 11 hours postaddition, and every 30 minutes from 12 to 96 hours. Simultaneously, we performed a 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Fibroblasts from wild-type (WT) pigs were used as positive controls and microwells without serum addition from each TP as negative controls. The RTCA results were expressed as a normalized cellular index (NCI). RESULTS Differences were observed between the five TP fibroblasts and the WT fibroblasts, with greater cytotoxicity on WT cells. Among TP, a higher cytolytic level was observed in males than females. The MTT results correlated with NCI at different times, with the minimum NCI and with the time to for NCI recovery before serum addition. The correlation was lower than that previously reported in environmental toxicity assays. CONCLUSIONS RTCA allows a long-term assessment of the immunocytotoxic effect of baboon sera on pig cells, providing a suitable tool to perform compatibility tests for xenotransplantation.

Psychological characteristics of patients on the liver transplantation waiting list with depressive symptoms.

INTRODUCTION Untreated psychiatric morbidity can worsen the quality of life in the posttransplantation stage. Therefore, it is important to detect and treat alterations associated with depression in transplantation patients from the beginning of the process. The objective of this study was to determine the psychological characteristics of patients on the liver transplantation waiting list with emotionally depressed symptoms. MATERIAL AND METHODS We evaluated 70 patients on the liver transplantation waiting list for psychopathological symptoms of depression using the Symptom Assessment-45 Questionnaire (González and Cuevas) using chi-squared tests, Student t tests, and logistic regression analysis. RESULTS Forty-seven percent of the patients on the liver transplantation waiting list showed relevant depressive-type psychopathological symptoms. The presence of the following factors were associated with the emotionally depressed characteristics of these patients: psychiatric mental disorders (P = .015); no partner (P = .009); and alcohol abuse (P = .050). Other related factors included the following: obsessive-compulsive-type emotional alterations (P = .001); interpersonal sensitivity (P < .001); anxiety (P < .001); hostility (P = .017); phobic anxiety (P = .017); and paranoid ideation (P = .029). With regard to coping strategies, these patients used defenselessness (P < .001) and anxious preoccupation (P = .016). With regard to the social-family setting, emotionally depressed patients had nonfunctional family and/or social support, according to the global MOS (Medical Outcomes Study-Social Support Survey) index (P = .008) and the total Apgar Family Score (P < .001). CONCLUSIONS Almost half of the patients on the liver transplantation waiting list showed emotionally depressed-type symptoms. Other emotional-type alterations were related to this psychological profile: coping strategies of defenselessness and anxious preoccupation as well as nonfunctional social and/or family support.

Knowledge of the brain death concept by personnel in Spanish and Latin-American healthcare centers

Background The knowledge and acceptance of the concept of brain death (BD) among health care personnel is fundamental. Objective To analyze the level of understanding of the BD concept among personnel in Spanish and Latin American healthcare centers and to determine the factors affecting this attitude. Material and methods Data from 12 hospitals and 32 primary care centers in 4 countries within the International Collaborative Donor Project were selected (Spain, Mexico, Cuba and Costa Rica (n = 4378)). Results 62% of the personnel (n = 2714) understood BD and believed that this was the death of an individual. Of the rest, 30% (n = 1 333) did not understand it and the remaining 8% (n = 331) believed it did not mean the death of a patient. 83% (n = 931) of physicians understood BD, compared to 75% (n = 895) of nurses, 55% (n = 299) of healthcare assistants, 53% (n = 108) of non-healthcare university-educated personnel and 36% (n = 481) of those without a university education (p<0.001). 68% (n = 1084) of Mexicans understood BD compared to 66% (n = 134) of Cubans, 58% (n = 1411) of Spaniards, and 52% (n = 85) (p<0.001) of Costa Ricans. There were significant relationships between knowledge of the concept and the following: type of healthcare center (p<0.001), clinical service (p<0.001), having spoken about organ donation within the family (p<0.001) and ones partners attitude to the subject (p<0.001). A direct relationship has been found between understanding the concept and attitude toward deceased donation (p<0.001). Conclusions The understanding of BD by personnel from healthcare centers was not as good as expected. There were marked differences depending on job category.

A study of the attitude of Latin‐American residents in Spain toward organ xenotransplantation

It is important to find out what would be the level of acceptance of xenotransplantation in society, especially in populations where there are preclinical trials. The Latin‐American population is growing in Spain, given the cultural, religious, and language similarities. Objectives: (i) to analyze attitude toward xenotransplantation in the population born in Latin America and now residing in Spain; and (ii) to establish the variables that affect this attitude.