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Boix F, Llorente S, Mrowiec A, Eguia J, López-Hernández R, Bernardo MV, Moya-Quiles MR, Campillo JA, Minguela A, Jimeno L, Alvarez-López MR, Muro M. Donor specific antibodies median fluorescence intensity levels are the best indicator for monitoring desensitization treatment in kidney transplant. Urol J 2014; 11:1695-1698. [PMID: 25015619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 12/08/2013] [Indexed: 06/03/2023]
Affiliation(s)
- Francisco Boix
- Department of Immunology, University Hospital Virgen Arrixaca, 30120. Murcia, Spain
| | - Santiago Llorente
- Department of Nephrology and Urology, University Hospital Virgen Arrixaca, 30120.Murcia, Spain
| | - Anna Mrowiec
- Department of Immunology, University Hospital Virgen Arrixaca, 30120. Murcia, Spain
| | - Jorge Eguia
- Department of Immunology, University Hospital Virgen Arrixaca, 30120. Murcia, Spain
| | - Ruth López-Hernández
- Department of Immunology, University Hospital Virgen Arrixaca, 30120. Murcia, Spain
| | | | | | - José A Campillo
- Department of Immunology, University Hospital Virgen Arrixaca, 30120. Murcia, Spain
| | - Alfredo Minguela
- Department of Immunology, University Hospital Virgen Arrixaca, 30120. Murcia, Spain
| | - Luisa Jimeno
- Department of Nephrology and Urology, University Hospital Virgen Arrixaca, 30120. Murcia, Spain
| | | | - Manuel Muro
- Department of Immunology, University Hospital Virgen Arrixaca, 30120. Murcia, Spain
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2
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Llorente S, Boix F, Eguia J, López M, Bosch A, Martinez H, Gonzalez MJ, López-Hernández R, Salgado G, Moya-Quiles MR, Campillo JA, García-Alonso AM, Minguela A, Jimeno L, Alvarez-López MR, Muro M. C1q-fixing human leukocyte antigen assay in immunized renal patients: correlation between Luminex SAB-C1q and SAB-IgG. Transplant Proc 2013; 44:2535-7. [PMID: 23146446 DOI: 10.1016/j.transproceed.2012.09.084] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND There is no consensus about the impact of thresholds of complement-fixing antibody assays. Recently, a C1q-SAB assay has been developed to identify complement-fixing HLA antibodies with high sensitivity and specificity. Our aim was to determine the correlation between IgG single antigens beads (SAB) and C1q-SAB assay results among patients on the renal waiting list. PATIENTS AND METHODS Serum samples from immunized renal waiting list patients as well as negative and positive controls were valided by Luminex (LMX). These sera, which were positive for 166 antibody specificities, were tested for HLA class I in parallel by LMX-IgG and LMX-C1q. RESULTS Comparison of antibody detection revealed no correlation based on median fluorescent intensity (MFI), levels between the IgG SAB and the C1qSAB assay (P > .05). IgG-positive sera with MFIs as low as 700 were able to fix C1q, whereas other sera with MFIs as high 14,500 did not. Furthermore, there appeared to be disparities in the profiles of class I antigens able to fix C1q-SAB. In our series, only 34% class I IgG SAB antibodies were also C1qSAB+. In several patients, we detected C1qSAB+ against IgGSAB- that was surely due to IgM antibodies. So, the C1qSAB assay detected IgM antibodies that fix complement. CONCLUSION These data suggested that the C1q-SAB assay could be an important method to evaluate pretransplant virtual crossmatch and to define nonpermitted specificities (C1q-fixing) in kidney transplantation.
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Affiliation(s)
- S Llorente
- Department of Nephrology, University Hospital Virgen Arrixaca, Murcia, Spain
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3
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Marín LA, Moya-Quiles MR, Miras M, Minguela A, Bermejo J, Ramírez P, García-Alonso AM, Parrilla P, Alvarez-López MR, Muro M. Evolution of soluble forms of CD86, CD95 and CD95L molecules in liver transplant recipients. Transpl Immunol 2011; 26:94-100. [PMID: 22182632 DOI: 10.1016/j.trim.2011.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 11/17/2011] [Accepted: 12/05/2011] [Indexed: 11/27/2022]
Abstract
Co-stimulatory factors such as CD86 and apoptotic molecules such as CD95 and CD95L required to start and to turn off the allogenic immune response may also be present as soluble proteins. To determine the role of the soluble forms of CD86 (sCD86), CD95 (sCD95) and CD95L (sCD95L) in the outcome of liver transplants, we analyzed the circulating levels of these molecules in patients subjected to liver transplantation in the pre-operative period and during the first month post-transplantation. Serum samples were obtained from sixty-nine first orthotopic liver transplants (OLT). The patients were classified into acute rejection (AR=24) and not acute rejection (NAR=45), or considering the presence of chronic active hepatitis B or C (VP=30) or other primary liver diseases (VN=39). The levels of sCD86, sCD95 and sCD95L were analyzed by solid phase sandwich enzyme-linked immunoabsorbent assays. Our results first showed that the pre-transplantation serum levels of sCD86 in the AR group were significantly higher than in the NAR group (1007±82U/mL vs. 739±46U/mL, p=0.006), and in the post-transplantation period these levels decreased sharply. Second, the levels of sCD95L and sCD95 in the pre-transplantation period did not point to statistically significant differences between the AR and NAR groups. Considering primary liver disease, the pre-transplantation levels of sCD86 and sCD95L in the VP group were significantly higher than those of the VN group (VP, 977±69U/mL vs. VN, 722±51U/mL, p<0.002, and VP, 482±78pg/mL vs. VN, 221±31pg/mL, p=0.002, respectively). Multivariate analysis revealed that only the pre-transplantation levels of sCD86 were independently associated with the development of episodes of acute rejection (p=0.005, OR=2.1, IC 95%=1.27-3.47). In conclusion, the present work shows that primary liver disease could influence the pre-transplantation levels of sCD86 and sCD95L. High pre-transplantation serum levels of sCD86 could favor the development of episodes of acute rejection.
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Affiliation(s)
- L A Marín
- Immunology Service, University Hospital Virgen de la Arrixaca, Murcia, Spain.
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4
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Blanco-García RM, López-Álvarez MR, Garrido IP, Salgado-Cecilia G, Campillo JA, Bolarín JM, Legaz I, Muro M, García-Alonso AM, Martínez-Sánchez MV, Moral JMDLP, Pascual-Figal DA, Alvarez-López MR, Miras M, Minguela A. CD28 and KIR2D receptors as sensors of the immune status in heart and liver transplantation. Hum Immunol 2011; 72:841-8. [PMID: 21742001 DOI: 10.1016/j.humimm.2011.06.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Revised: 05/25/2011] [Accepted: 06/07/2011] [Indexed: 12/31/2022]
Abstract
Viral infections and cellular acute rejection (AR) condition immunosuppressive therapy and compromise the evolution of allografts. Immune monitoring can be useful for ascertaining rejection and for differentiating allo-reaction from activation induced by infections. This work analyzes the usefulness of monitoring the expression of CD28 and KIR2D receptors in peripheral blood T lymphocytes by flow cytometry, to ascertain the immune response in heart and liver transplant recipients. In both types of transplant, the up-regulation of CD28 in CD4(+) lymphocytes in the periods of greatest AR frequency indicates an effective allo-response, whereas the post-transplantation emergence of circulating CD8(+)CD28(-) and CD8(+)CD28(-)KIR2D(+) T cells correlates with better early clinical results. Cytomegalovirus (CMV) infection, but not hepatitis C virus (HCV) or other infections, abrogated both CD28 up-regulation and CD8(+)CD28(-)KIR2D(+) T-cell expansion. Our results show that monitoring the expression of CD28 and KIR2D receptors on T lymphocytes might be considered as sensors of the immune status of heart and liver recipients.
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Affiliation(s)
- R M Blanco-García
- Immunology Service, University Hospital Virgen de la Arrixaca, El Palmar, Murcia, Spain
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5
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Muro M, Marín L, Torio A, Pagan JA, Alvarez-López MR. CCL5/RANTES chemokine gene promoter polymorphisms are not associated with atopic and nonatopic asthma in a Spanish population. Int J Immunogenet 2008; 35:19-23. [PMID: 18186796 DOI: 10.1111/j.1744-313x.2007.00724.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
CCL5/RANTES, a member of the C-C chemokine family, is a potent eosinophil, monocyte, basophile and lymphocyte chemo-attractant at the site of inflammation. Recent studies revealed that a functional mutation at the -403 position in the promoter may have significance for atopic dermatitis, bronchial asthma, sarcoidosis, rheumatoid arthritis and HIV infection, and others. Another polymorphism in the -28 position has been reported. Our objective was to investigate the possible influence of the CCL5/RANTES promoter polymorphisms in the different types of bronchial asthma. CCL5/RANTES genotyping was performed by polymerase chain reaction-restriction fragment-length polymorphism (PCR-RFLP) in 306 asthmatic patients with non-atopic (n = 145) and atopic (n = 161) asthma and 242 controls. The 81.9% of the atopic asthma patients for -403G/A had the G allele and the A allele frequency was 18%. Of the non-atopic asthma patients, the G allele frequency was 79.7% and the A allele was 20.3%. Concerning the -28C/G polymorphism, the frequency of the CCL5/RANTES -28G allele in our patients is 2.8%, which is similar to Spanish adult population. After comparing patients with asthma, atopic patients, non-atopic patients and control population, we found no significant deviation in the distribution of the alleles or genotypes of CCL5/RANTES promoter polymorphisms in any tested comparison. Therefore, human CCL5/RANTES gene promoter polymorphisms are not associated with the different types of bronchial asthma in Spanish population.
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Affiliation(s)
- M Muro
- Department of Immunology, University Hospital Virgen Arrixaca, Murcia, Spain.
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6
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Miras M, Carballo F, Egea J, Martínez C, Alvarez-López MR, Sánchez-Bueno F, Parrilla P. Clinical Evolution in the First 3 Months of Patients After Liver Transplantation in Maintenance Phase Converted From Mycophenolate Mofetil to Mycophenolate Sodium Due to Gastrointestinal Complications. Transplant Proc 2007; 39:2314-7. [PMID: 17889175 DOI: 10.1016/j.transproceed.2007.06.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The enteric-coated mycophenolate sodium (EC-MPS) is a new formulation of mycophenolic acid with a gastro-resistant enteric coating, which releases the drug in the intestine, reducing the incidence of the gastrointestinal (GI) adverse effects. The present work provided a summary of 20 patients with liver transplantation and more than a 1 year of treatment with mycophenolate mofetil (MMF) who, after presentation of GI complications, were converted to EC-MPS. The patients were followed over a 3-month period after beginning EC-MPS treatment. The mean age of the cohort was 53 +/- 10 years and included 75% men. The reasons for transplantation were ethanol cirrhosis (70%), hepatitis C cirrhosis (30%), hepatocarcinoma (5%), and Wilson's disease (5%). At baseline, all patients were being treated with cyclosporine (CsA). CsA doses and levels were reduced during follow-up: baseline dose 179 mg/day versus 143 mg/day at 3 months; levels: 90.4 ng/mL versus 85.8 ng/mL, respectively (P = .017). The administered dose of EC-MPS was 720 mg/day in all cases. The GI complications at baseline were: diarrhea 60% (92% moderate-severe), abdominal discomfort 60% (58% moderate), abdominal pain 45% (44% moderate-severe), gas 40% (38% moderate-severe), nausea 20% (25% moderate), and dyspepsia 20% (mild). After 3 months of EC-MPS treatment, only two patients (10%) displayed moderate diarrhea. The renal evolution was favorable, serum creatinine was reduced, and 24-hour creatinine clearance significantly increased (creatinine: 1.78 +/- 1.6 mg/dL at baseline versus 1.30 +/- 0.3 mg/dL at 3 months, P = .002; creatinine clearance: 72.8 +/- 18 mL/min versus 79.6 +/- 13 mL/min, P = .001). Conversion of MMF to EC-MPS in liver transplant recipients solved the GI tolerability problems and improved renal function during the first 3 months, probably due to the concomitant reduction of anticalcineurinic dose.
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Affiliation(s)
- M Miras
- Unidad de Trasplante Hepático. Hospital Universitario Virgen de la Arrixaca, Murcia, Spain.
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7
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Blanco-Garcia RM, López-Alvarez MR, Pascual-Figal DA, Polo-Garcia L, Guerra N, Campillo JA, Muro M, Garcia-Alonso AM, Marin-Moreno I, Valdes M, Alvarez-López MR, Minguela A. Expression of HLA Molecules on Peripheral Blood Lymphocytes: A Useful Monitoring Parameter in Cardiac Transplantation. Transplant Proc 2007; 39:2362-4. [PMID: 17889190 DOI: 10.1016/j.transproceed.2007.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
During the rejection process of cardiac allografts, the expression of HLA antigens increases on various graft tissues, ie, the myocardium and the interstitial structures. However, in this type of transplant there is a paucity of knowledge about HLA expression on recipient cells, such as peripheral blood mononuclear cells. In the present study expression of HLA class I and class II antigens was monitored on peripheral blood lymphocytes prior to and during a 12-month follow-up, using flow cytometry. In our series, the frequency of acute rejection episodes was greater from the fourth to the ninth month after transplantation, coinciding with a reduction in cyclosporine blood levels. At the same time, expression of HLA class I and class II antigens significantly increased among recipients suffering from more severe acute rejection episodes compared with those showing acceptance of their grafts (P < .01). In conclusion, acute rejection episodes in cardiac transplantation were associated with up-regulation of HLA molecules on recipient peripheral blood cells. Monitoring the expression of HLA molecules on peripheral blood lymphocytes may represent an easy, noninvasive practice to individualize immunosuppressive therapy.
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Affiliation(s)
- R M Blanco-Garcia
- Immunology, University Hospital Virgen de la Arrixaca, Murcia, Spain
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8
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Suárez-Alvarez B, López-Vázquez A, Gonzalez MZ, Fdez-Morera JL, Díaz-Molina B, Blanco-Gelaz MA, Pascual D, Martínez-Borra J, Muro M, Alvarez-López MR, López-Larrea C. The relationship of anti-MICA antibodies and MICA expression with heart allograft rejection. Am J Transplant 2007; 7:1842-8. [PMID: 17511763 DOI: 10.1111/j.1600-6143.2007.01838.x] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The role of MICA antibodies in acute heart allograft rejection was examined utilizing 190 pre- and post-transplant serum samples from 44 patients collected during the first year after transplantation. MICA antibodies were detected by CDC test on recombinant cell lines and by the newly developed Luminex MICA antibody detection assay. Additionally, MICA expression was analyzed by 'real time' RT-PCR and by immunohistochemistry in 10 endomyocardial biopsies. Only two subjects had HLA antibodies post-transplant. Nevertheless, MICA antibodies were found in a significant number of subjects. The prevalence of MICA antibodies was significantly higher among those with severe acute rejection (AR) than in those without rejection (60.7% vs. 14.3%, p = 0.0038 by CDC; 55.5% vs. 5.7%, p = 0.0020 by Luminex). In most cases, the appearance of MICA antibodies post-transplant precedes AR. Following transplantation, MICA up-regulation correlated with histological evidence of severe rejection. Monitoring for MICA antibodies post-transplant may be useful to establish new risk factors for acute rejection.
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Affiliation(s)
- B Suárez-Alvarez
- Department of Immunology, Hospital Universitario Central de Asturias, Oviedo, Spain
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9
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Muro M, Moya-Quiles MR, Botella C, García L, Minguela A, Alvarez-López MR. Genetic relationship between Murcia Region (SE Spain) and other populations in the Iberian Peninsula and Mediterranean area with respect to HFE gene mutations distribution. Ann Hematol 2007; 86:455-7. [PMID: 17235517 DOI: 10.1007/s00277-006-0242-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2006] [Accepted: 12/04/2006] [Indexed: 12/20/2022]
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10
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Luque J, Torres MI, Aumente MD, Lozano JM, García-Jurado G, González R, Alvarez-López MR, Arizón JM, Peña J. sHLA-G levels in the monitoring of immunosuppressive therapy and rejection following heart transplantation. Transpl Immunol 2006; 17:70-3. [PMID: 17157221 DOI: 10.1016/j.trim.2006.09.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2006] [Accepted: 09/13/2006] [Indexed: 11/28/2022]
Abstract
The aim of this study was to further determine the immediate influence, over a 12-h period, after the initiation of daily immunosuppressive treatment on the serum levels of sHLA-G in heart transplant patients during the post-transplant period (1 month). It was found that there are two patterns of patients in term of the changes observed in their levels of sHLA-G in response to the immunosuppressive treatment. One group (group A) showed no changes on sHLA-G while the other group (group B) a significant rise in sHLA-G levels was observed at 2 to 4 h post dose. Interestingly, it was observed that the patients in group B have better prognosis of acceptance of the heart graft than those of group A. On the other hand it was found that the patients with high levels of sHLA-G (77.3+/-34.8 ng/ml) in pre-transplant sera have a better prognosis of acceptance of the heart graft than those with low sHLA-G levels (9.7+/-7.1 ng/ml). In conclusion, both the intensity of changes of sHLA-G levels induced by immunosuppression and basal levels in pre-transplant could be used in the monitoring of the immunosuppression as well as the heart transplant evolution.
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Affiliation(s)
- J Luque
- Service of Immunology, Reina Sofía University Hospital, Cordoba, Spain
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11
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Muro M, Moya-Quiles MR, Botella C, Alvarez-López MR. Prevalence of C282Y, H63D and S65C mutations of the hemochromatosis (HFE) gene in a population from southeastern Spain (Murcia Region). Clin Genet 2006; 71:97-8. [PMID: 17204056 DOI: 10.1111/j.1399-0004.2006.00730.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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López-Alvarez MR, Gómez-Mateo J, Ruiz-Merino G, Campillo JA, Miras M, García-Alonso AM, Sánchez-Bueno F, Parrilla P, Alvarez-López MR, Minguela A. Analysis of KIR2D receptors on peripheral blood lymphocytes from liver graft recipients. Transpl Immunol 2006; 17:51-4. [PMID: 17157216 DOI: 10.1016/j.trim.2006.09.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2006] [Accepted: 09/13/2006] [Indexed: 02/08/2023]
Abstract
KIR2D receptors are killer cell immunoglobulin-like receptors (KIRs) specific for HLA-C epitopes, that are expressed on NK cells as well as on minor peripheral blood T-cell subsets, and are able to control NK and T cells activity. The present work explores NK, and particularly CD8(+) T cells expressing KIR2D2L1/S1 (CD158a) or KIR2D2L2/3/S2 (CD158b) receptors in liver graft alloresponse. Flow cytometry was used to analyse peripheral blood mononuclear cells stained with anti-CD158a and anti-CD158b antibodies from 110 liver recipients and 46 healthy controls, previous to and along the first month after transplantation. Pre-transplantation data shows that both CD158a and CD158b molecules can be detected on NK and T cells from all patients and controls, but both KIR2D(+)NK cells are significantly under-represented in patients respect to controls (P<0.001), and CD3(+)CD8(+)CD158a(+) cells decreased particularly in patients suffering from acute rejection (4.03+/-1.33 cells/microL) compared with controls (7.8+/-2.4 cells/microL). Following transplantation, KIR2D(+)CD8(+) T-cell repertoires increased through the first month, mainly in recipients with a good graft acceptance. In summary, monitoring of KIR2D(+)CD8(+) T cells, particularly KIR2DL1/S1(+)CD8(+) T cells at pre-transplant, and both KIR2DL1/S1(+) and KIR2DL2/3/S2(+) T-cell subsets at early post-transplant period, could offer useful information for clinical follow-up of liver grafts.
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Affiliation(s)
- María R López-Alvarez
- Immunology Service, Hospital Universitario Virgen de la Arrixaca, 30120 Murcia, Spain
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13
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Gómez-Mateo J, Marin L, López-Alvarez MR, Moya-Quiles MR, Miras M, Marin-Moreno I, Botella C, Parrilla P, Alvarez-López MR, Muro M. TGF-beta1 gene polymorphism in liver graft recipients. Transpl Immunol 2006; 17:55-7. [PMID: 17157217 DOI: 10.1016/j.trim.2006.09.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2006] [Accepted: 09/13/2006] [Indexed: 11/25/2022]
Abstract
Cytokines are known to be important mediators during liver graft outcome and their gene polymorphism could affect the overall expression and secretion of cytokines. In this retrospective study, we analyzed the effect of TGF-beta1 polymorphism in 150 liver allograft recipients. Genotyping PCR-SSP were performed for TGF-beta1 gene (codon 10T/C and 25C/G). TGF-beta1 polymorphism at codon 10 and 25 correlate borderline with liver graft acceptance and when the combination between codon 10 and 25 was analyzed, it revealed that T/T G/C genotype and the TC haplotype were significantly associated with graft acceptance (p<0.05). TGF-beta1 high secretor phenotype was also increased in the acute rejection group close to significance (p=0.06). In conclusion, these findings show a correlation between TGF-beta1 gene polymorphism and liver graft acceptance.
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Affiliation(s)
- Jorge Gómez-Mateo
- Immunology, Hospital Universitario Virgen de la Arrixaca, 30120 Murcia, Spain
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14
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Luque J, Torres MI, Aumente MD, Marín J, García-Jurado G, González R, Pascual D, Guerra N, López-Rubio F, Alvarez-López MR, Arizón JM, Peña J. Soluble HLA-G in heart transplantation: their relationship to rejection episodes and immunosuppressive therapy. Hum Immunol 2006; 67:257-63. [PMID: 16720205 DOI: 10.1016/j.humimm.2006.02.034] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2005] [Indexed: 11/20/2022]
Abstract
The aims of this study were to quantify the level of soluble HLA-G in heart transplant patients, to determine the relationship between the sHLA-G levels and the appearance of acute rejection episodes, and to identify the influence of immunosuppressive therapy on sHLA-G levels. Analysis of sHLA-G, measured by enzyme-linked immunosorbent assay in the transplant patients, revealed the existence of two similarly sized groups of patients. One group displayed a significant increase (p < 0.001) in sHLA-G during the first month after transplantation while the other group maintained low levels of the molecule (0-30 ng/ml) throughout the study. The latter group displayed a high incidence of recurrent severe rejection. A significant increase (p < 0.01) in sHLA-G 2 hours after administration of immunosuppressive treatment (mycophenolate mofetil, cyclosporine A/FK506, corticoids) was found. These results suggest that sHLA-G participates in the induction of certain levels of immunological tolerance in these recipients.
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Affiliation(s)
- J Luque
- Service of Immunology, Reina Sofía University Hospital, Cordoba, Spain
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15
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Marín LA, Muro M, Moya-Quiles MR, Miras M, Minguela A, Bermejo J, Sanchez-Bueno F, Parrilla P, Alvarez-López MR. Study of Fas (CD95) and FasL (CD178) polymorphisms in liver transplant recipients. ACTA ACUST UNITED AC 2006; 67:117-26. [PMID: 16441482 DOI: 10.1111/j.1399-0039.2006.00538.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The Fas receptor is capable of transducing apoptotic cell death upon interaction with their ligand (FasL). Recent studies suggest that the Fas/FasL system is involved both in graft rejection and in transplantation tolerance. In this study, we analyzed the effect of Fas and FasL polymorphisms in liver allograft outcome. Fas and FasL polymorphisms were analyzed in 151 primary liver graft recipients. The Fas (-670 A/G) and the FasL (IVS2nt -124 A/G and IVS3nt 169 T/delT) polymorphisms were analyzed by polymerase chain reaction-restriction fragment length polymorphism. Fas -1377 G/A polymorphism was determined by allele-specific amplification. Fas and FasL polymorphisms were not associated with acute and chronic rejection in liver transplant. In contrast, those recipients bearing the AA -670 Fas genotype showed significantly lower graft survival rate (S = 40%) than those bearing the GA genotype (S = 63.1%). These differences were detected from the first year post-transplant. Multivariate analysis confirmed that the AA genotype increased the risk of liver graft loss. This work suggests for the first time a possible harmful effect of Fas -670 AA genotype on liver graft survival, whereas the Fas and FasL polymorphisms are not associated with acute or chronic rejection in liver graft recipients.
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Affiliation(s)
- L A Marín
- Immunology Service, University Hospital Virgen de la Arrixaca, Murcia, Spain.
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Muro M, Llorente S, Gónzalez-Soriano MJ, Minguela A, Gimeno L, Alvarez-López MR. Pre-formed donor-specific alloantibodies (DSA) detected only by luminex technology using HLA-coated microspheres and causing acute humoral rejection and kidney graft dysfunction. Clin Transpl 2006:379-383. [PMID: 18365392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The different methodologies for the detection of HLA sensitization could have discrepant results. At the moment, luminex technology seems--in our opinion--to be the most sensitive and safest method for antibody detection, and it should be taken into account during the transplantation process and as a means of indicating immunossuppresive regimen modulation.
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Affiliation(s)
- Manuel Muro
- Departments of Immunology, University Hospital Virgen de la Arrixaca, Spain
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17
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Marín LA, Moya-Quiles MR, Miras M, Muro M, Minguela A, Bermejo J, Ramírez P, García-Alonso AM, Parrilla P, Alvarez-López MR. Evaluation of CD86 gene polymorphism at +1057 position in liver transplant recipients. Transpl Immunol 2005; 15:69-74. [PMID: 16223675 DOI: 10.1016/j.trim.2005.04.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2005] [Accepted: 04/14/2005] [Indexed: 11/24/2022]
Abstract
BACKGROUND Efficient T cell-APC interaction requires the participation of primary and co-stimulatory signals. The main co-stimulatory pathway involves the interaction of CD80 and CD86, expressed on the APCs, with their T cell counter-receptor, CD28 and CTLA-4. Recently, a G to A transition has been described at position +1057 of the CD86 gene, located in their cytoplasmic tail. METHODS CD86 polymorphism was analyzed by sequence based typing in DNA samples obtained from 205 liver transplant recipients. Acute rejection and chronic rejection were diagnosed based upon conventional clinical, biochemical and histological criteria. RESULTS The study of CD86 +1057 (G/A) polymorphism revealed that recipients bearing the A allele or the AA genotype have a reduced risk of acute rejection. In fact, the AA genotype was absent in the group of patients showing acute rejection episodes, whereas its frequency in those patients without acute rejection episodes was 8.8% (P=0.009, OR=0.07). This polymorphism did not reveal any association with the incidence of chronic rejection, but patients bearing the AA genotype showed a higher graft survival rate (83.3%) than those bearing the GA genotype (49.3%) or GG genotype (56.5%). CONCLUSIONS The results of the present report suggest that the CD86 AA genotype at +1057 position could be involved in liver transplant acceptance, given that its presence is related to a decrease of acute rejection frequency and to a graft survival increase.
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Affiliation(s)
- L A Marín
- Servicio de Inmunología, Hospital, Universitario Virgen de la Arrixaca, 30120, Ctra Madrid-Cartagena s/n. El Palmar, Murcia, Spain
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18
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Moya-Quiles MR, Martínez-Escribano J, Guerra-Perez N, Muro M, Marín L, Campillo JA, Montes-Ares O, Frias J, Minguela A, García-Alonso AM, Lozano JA, Alvarez-López MR. Lack of association between HLA-E polymorphism and primary cutaneous melanoma in Spanish patients. J Dermatol Sci 2005; 40:62-4. [PMID: 16153808 DOI: 10.1016/j.jdermsci.2005.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2005] [Revised: 07/18/2005] [Accepted: 07/20/2005] [Indexed: 10/25/2022]
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Muro M, Marin L, Miras M, Moya-Quiles R, Minguela A, Sánchez-Bueno F, Bermejo J, Robles R, Ramírez P, García-Alonso A, Parrilla P, Alvarez-López MR. Liver recipients harbouring anti-donor preformed lymphocytotoxic antibodies exhibit a poor allograft survival at the first year after transplantation: experience of one centre. Transpl Immunol 2005; 14:91-7. [PMID: 15935299 DOI: 10.1016/j.trim.2005.03.013] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2005] [Accepted: 03/28/2005] [Indexed: 12/20/2022]
Abstract
In this retrospective study, we analyzed the effect of the presence of anti-donor preformed alloantibodies in 268 liver allograft transplants. Crossmatches were performed by complement-dependent cytotoxicity (CDC) assay and HLA antibody screening by flow cytometry (FlowPRA). Positive anti-donor crossmatch was detected in 5.2% of transplants. Acute rejection frequency in +CDC crossmatch patients was not different from that observed in -CDC crossmatch patients. None of the patients transplanted with +CDC crossmatch developed chronic rejection, but they showed a significantly lower allograft survival rate, and the majority of them had allograft failures before the end of the first post-transplant year, mainly within the 3 first months. Indeed, positive FlowPRA determination was concordant with data from the CDC assay. In conclusion, these findings show a direct correlation between the presence of anti-donor preformed antibodies and a poor allograft survival in liver transplant.
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Affiliation(s)
- Manuel Muro
- Immunology Service, University Hospital Virgen de la Arrixaca, Murcia 30120, Spain.
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20
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Muro M, Llorente S, Marín L, Moya-Quiles MR, Gonzalez-Soriano MJ, Prieto A, Gimeno L, Alvarez-López MR. Acute vascular rejection mediated by HLA antibodies in a cadaveric kidney recipient: discrepancies between FlowPRATM, ELISA and CDC vs luminex screening. Nephrol Dial Transplant 2005; 20:223-6. [PMID: 15632356 DOI: 10.1093/ndt/gfh527] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Manuel Muro
- Department of Immunology, University Hospital Virgen de la Arrixaca, 30120, Murcia, Spain.
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21
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Moya-Quiles MR, Torío A, Muro M, Montes-Ares O, Marin L, Minguela A, Sánchez-Bueno F, Garcia-Alonso AM, Parrilla P, Alvarez-López MR. Impact of HLA-C on acute rejection in liver transplantation. Transplant Proc 2003; 35:1892-3. [PMID: 12962836 DOI: 10.1016/s0041-1345(03)00636-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Although liver transplants show a special tolerogenic behaviour, rejection remains an important problem that involves several immunological mechanisms, some of which are unknown. Our study sought to analyze the influence of HLA-C polymorphism on short-term liver graft acceptance by HLA-C genotyping of 100 orthotopic liver transplant recipient-donor pairs. Recipients were statified according to the occurrence of acute rejection. HLA-Cw*06 allele appeared to be underrepresented among recipients without versus those with acute rejection or those in control groups. With regard to HLA-C allelic compatibility, the frequency of acute rejection or those in episodes decreased with fewer HLA-C mismatches. These findings suggest the participation of HLA-C molecules in liver graft alloresponses, involving HLA-C genotyping, as well as compatibility.
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Affiliation(s)
- M R Moya-Quiles
- Immunology Service, University Hospital Virgen de la Arrixaca, Murcia, Spain
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22
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Muro M, Sánchez-Bueno F, Marín L, Torío A, Moya-Quiles MR, Minguela A, Montes O, Guerra N, Montes M, Pérez-López MJ, Robles R, Ramirez P, García-Alonso AM, Parrilla P, Alvarez-López MR. Relationship between CDC cross-match in liver recipients and antibody screening by flow cytometry. Transplant Proc 2003; 35:1894-5. [PMID: 12962837 DOI: 10.1016/s0041-1345(03)00639-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Several authors have shown that anti-donor antibodies before liver transplantation are associated with decreased graft survival. The aim of this study was to investigate the relationship between anti-donor antibodies detected by the CDC technique or by FlowPRA, and acute or chronic rejection as well as graft survival. Furthermore, we sought to determine whether anti-donor antibodies, detected by the CDC technique, correlated with those discovered by cytometric screening. The acute rejection incidence among patients with complement-dependent cytotoxicity positive CDC cross-match was similar to that for patients with a negative cross-match. None of the patients with a positive cross-match developed chronic rejection. Allograft survival was significantly lower among recipients with a positive T-lymphocyte cross-match. Indeed, the majority of recipients with positive CDC cross-matches displayed graft failures before first posttransplant year. The results of a positive FlowPRA determination were concordant with a positive CDC cross-match in 85.71% of cases. Our data demonstrate that pretransplant FlowPRA correlates with the final CDC cross-match results. This finding suggests that in the future prospective pretransplant antibody screening with FlowPRA or CDC techniques may be useful to identify high-risk recipients.
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Affiliation(s)
- M Muro
- Immunology Service, University Hosptial Virgen de la Arrixaca, Murcia, Spain.
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23
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Torío A, Moya-Quiles MR, Luna A, Alvarez-López MR. Distribution of the D17S5 alleles in South-East Spain (Murcia Region). J Forensic Sci 2003; 48:223. [PMID: 12570241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Affiliation(s)
- A Torío
- Immunology Service, University Hospital Virgen de la Arrixaca, 30120 Murcia, Spain
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24
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Muro M, Sánchez-Bueno F, Marín L, Torío A, Moya-Quiles MR, Minguela A, Ramirez P, Alemany JM, Miras M, Pérez-López MJ, García-Alonso AM, Parrilla P, Alvarez-López MR. DQA1 and DQB1 genes polymorphism on acute rejection development in liver transplantation. Transplant Proc 2002; 34:3302-3. [PMID: 12493453 DOI: 10.1016/s0041-1345(02)03668-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M Muro
- Immunology University Hospital Virgen de la Arrixaca, Murcia, Spain.
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25
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Martínez-Escribano JA, Moya-Quiles MR, Muro M, Montes-Ares O, Hernández-Caselles T, Frías JF, Alvarez-López MR. Interleukin-10, interleukin-6 and interferon-gamma gene polymorphisms in melanoma patients. Melanoma Res 2002; 12:465-9. [PMID: 12394188 DOI: 10.1097/00008390-200209000-00008] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The immune response against melanoma can be influenced by cytokines with potentially opposite effects on tumour cell growth, such as interleukin-10 (IL10), interleukin-6 (IL6) and interferon-gamma (IFNgamma). Our objective in this study was to investigate whether polymorphisms in the regulatory regions of IL10, IL6 and IFNgamma genes are associated with the development of primary cutaneous melanoma and/or the prognosis of this tumour. We studied genotypic variations at positions -1082, -819 and -592 in the IL10 promoter, -174 in the IL6 promoter and +874 in the IFNgamma intron 1 in 42 melanoma patients and 48 healthy controls. These two populations showed very similar genotypic frequencies for IL10, IL6 and IFNgamma gene polymorphisms. There was a significant increase in the prevalence of IL10 low expression genotypes, specially the ACC/ATA genotype, among patients with a poorer prognosis. In contrast, IL6 promoter and IFNgamma intron 1 gene polymorphisms did not correlate with melanoma prognosis. These data indicate that investigation of polymorphisms in the regulatory regions of IL10, IL6 and INFgamma genes does not seem to be useful for predicting the risk of development of primary cutaneous melanoma. However, IL10 low expression genotypes may be associated with a poorer outcome in melanoma patients.
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Muro M, Moya-Quiles MR, Marin L, Torío A, Vallejo C, Moraleda JM, Alvarez-López MR. Report of recombinations between HLA loci within two families: utility of high resolution typing. Clin Transplant 2002; 16:329-33. [PMID: 12225428 DOI: 10.1034/j.1399-0012.2002.01148.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We have analysed two Caucasian families in which recombinant individuals have been identified. In both families, initial low resolution typing of class I and II antigens of possible patients referred for bone marrow transplantation and their respective potential donors (based on inherited haplotypes analysis) revealed them to be HLA identical and supposedly inheriting-non-recombinant haplotypes. The mothers were found to be DRB1*04 generic allele homozygous, but possessing two DRB1*04 specific alleles, DRB1*0403 and DRB1*0404 (family A) and DRB1*0401 and DRB1*0402 (family B). In both cases the patients inherited a maternal haplotype that is the result of a recombination event between the mother's HLA-DRB1 and -B genes on their chromosomes. Based on linkage disequilibrium it is likely that the recombinant haplotypes are present in the patients rather than their brothers. In both families, the results of the MLC in terms of relative response was positive. Thus, these cases illustrate the importance of high resolution DNA class II typing when assignment of MHC antigens is of extreme importance (i.e. bone marrow transplantation).
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Affiliation(s)
- M Muro
- Service of Immunology, University Hospital Virgen de la Arrixaca, Murcia, Spain.
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27
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Abstract
Frequency data of the nine STRs included in the AmpFlSTR Profiler Plus Kit were determined in a sample of 114 unrelated individuals from Murcia region (SE Spain).
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Affiliation(s)
- A Torío
- Servicio de Inmunología, Hospital Universitario Virgen de la Arrixaca, 30120 Murcia, Spain.
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28
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Marín L, Minguela A, Moya-Quiles MR, Torío A, Muro M, García-Alonso AM, Sánchez-Bueno F, Bru M, Parrilla P, Alvarez-López MR. Expression of CD95 and apoptosis induction in peripheral blood cells from liver graft recipients. Transplant Proc 2002; 34:280-2. [PMID: 11959286 DOI: 10.1016/s0041-1345(01)02763-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- L Marín
- Immunology Service, University Hospital Virgen de la Arrixaca, Murcia, Spain
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29
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Torío A, Moya-Quiles MR, Muro M, Montes-Ares O, Ontañon J, Minguela A, Marin L, Alemany JM, Sánchez-Bueno F, Alvarez-López MR. Discrepancies in HLA-C typing in transplantation: comparison of PCR-SSP and serology results. Transplant Proc 2002; 34:419-20. [PMID: 11959352 DOI: 10.1016/s0041-1345(01)02825-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- A Torío
- Immunology Section, University Hospital Virgen de la Arrixaca, El Palmar, Murcia, Spain
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30
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Muro M, Herrero N, Marin L, Torío A, Minguela A, Sánchez-Bueno F, García-Alonso AM, Alvarez-López MR. Polymorphism in the upstream regulatory region of the HLA-DQB1 gene in liver graft recipients. Hum Biol 2001; 73:845-54. [PMID: 11804200 DOI: 10.1353/hub.2001.0088] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
HLA-DQB1*0302 allele frequency is increased in liver graft recipients with acute rejection. We investigated polymorphism in the upstream regulatory regions (URRs) of the DQB1 gene to determine whether polymorphism in the DQB1 promoter region influences liver graft acceptance. A combination of typing protocols based on the polymerase chain reaction were used in 103 first-time liver transplants and 108 healthy Spanish controls. The QBP3.21 allele frequency and QBP3.21-DQB1*0302 haplotype were significantly different in recipients with acute rejection compared to those with good graft acceptance and to controls. Of major interest for acute rejection development are the promoter "splits" of DQB1*0302 (QBP3.21, QBP3.22, and QBP3.3 alleles), which are in linkage disequilibrium with DQB1*0302. The promoter splits were equally distributed in all groups. Thus, although there are significant differences in the frequencies of the QBP alleles and QBP-DQB1 haplotypes between recipients with and without acute rejection and controls, the composition of these haplotypes is essentially the same in all groups. In conclusion, our data show that the polymorphism in the DQB1 promoter region does not clearly influence liver graft acceptance, and, as occurs in other populations, QBP alleles exhibit strong linkage disequilibrium with the DQB1 locus.
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Affiliation(s)
- M Muro
- Servicio de Inmunologia, Hospital Universitario Virgen de la Arrixaca, Murcia, Spain
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31
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Muro M, Marín L, Torío A, Moya-Quiles MR, Minguela A, Rosique-Roman J, Sanchis MJ, Garcia-Calatayud MC, García-Alonso AM, Alvarez-López MR. HLA polymorphism in the Murcia population (Spain): in the cradle of the archaeologic Iberians. Hum Immunol 2001; 62:910-21. [PMID: 11543893 DOI: 10.1016/s0198-8859(01)00290-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Human leukocyte antigen (HLA) study in Murcian individuals was performed in order to provide information of their historical origins and relationships with other Iberian and Mediterranean populations. HLA class I and class II alleles were determined in 173 unrelated Caucasoid donors from Murcia Region in the Southeast of Spain by serologic and DNA based polymerase chain reaction (PCR) typing. Class I antigen and class II allele frequencies of our series were not very different to those found in Spaniards. The analysis of extended haplotypes showed that the three haplotypes most frequent in our population were respectively, A29-B44-Cwb-DRB1*0701-DRB4*0101-DQA1*0201-DQB1*0202, A1-B8-Cw7-DRB1*0301-DRB3*0101-DQA1*0501-DQB1*0201 and A30-B18-Cw5-DRB1*0301-DRB3*0101-DQA1*0501-DQB1*0201. They were followed by A26-B38-Cwb-DRB1*1301-DRB3*0202-DQA1*0103-DQB1*0603, which could point to an ancestral relationship between Murcian and Portuguese Iberian populations, and by A2-B7-Cw7-DRB1*1501-DRB5*0101-DQA1*0102-DQB1*0602 also present in all Iberian Peninsula populations. Allelic frequencies, populations distance dendrogram and correspondence analysis were used to study the relationships between Murcian and other populations. The closest relation was observed with Spaniards and Portuguese, followed in decreasing order by French, Italians, Algerians, Germans, Catalans, Basques, Cretans, Sardinians, and Greeks. Thus, Murcian population seems to belong to the European genetic pool, revealing a lesser genetic distance with the North Africans and the rest of populations from the Iberian Peninsula.
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Affiliation(s)
- M Muro
- Service of Immunology, University Hospital Virgen de la Arrixaca, Murcia, Spain
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Minguela A, Sánchez-Bueno F, Marín L, Miras M, Pons JA, Muro M, Torío A, García-Alonso AM, Robles R, Parrilla P, Ramirez P, Alvarez-López MR. Could expression of co-stimulatory molecules on B-PBL condition the acceptance or rejection of human liver grafts? Transplant Proc 2001; 33:1384-5. [PMID: 11267338 DOI: 10.1016/s0041-1345(00)02520-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- A Minguela
- Immunology Section, University Hospital "Virgen de la Arrixaca," 30120, Murcia, Spain
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Minguela A, Marín L, Torío A, Muro M, García-Alonso AM, Moya-Quiles MR, Sánchez-Bueno F, Parrilla P, Alvarez-López MR. CD28/CTLA-4 and CD80/CD86 costimulatory molecules are mainly involved in acceptance or rejection of human liver transplant. Hum Immunol 2000; 61:658-69. [PMID: 10880736 DOI: 10.1016/s0198-8859(00)00113-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
CD28/CTLA-4 interactions with their specific B7-ligands (CD80 and CD86) have decisive roles in antigenic and allogenic responses. Recently, experimental transplant studies demonstrated that donor-specific tolerance is achieved by blocking these interactions. The present study analyzes the expression of these co-stimulatory molecules in peripheral blood cells from 74 liver recipients and in 16 liver biopsies, which were classified into acute-rejection (AR, n = 27) and nonacute-rejection (NAR, n = 47) groups, as well as their influence on the in vitro response of in vivo allosensitized cells. The results clearly indicate that in human liver transplant too, B7 and CD28/CTLA-4 expression on B and CD4(+) peripheral lymphocytes respectively, contributes to graft acceptance or rejection, and appears to be of crucial importance in modulating the host alloresponse and specific-CTL generation. In the NAR-group, costimulatory molecule expression remained at basal levels after transplant, whereas in the AR-group these molecules were significantly upregulated on days of AR. CTLA-4 was observed in the infiltrating lymphocytes in most of the biopsies, but CD80 or CD86 were not. Moreover, specific cytotoxicity from the in vivo primed cells was clearly suppressed in the NAR-patients with low co-stimulatory molecule expression, whereas this activity was not modified but rather stimulated in the AR-group. Together, these findings indicate that intervention of CD28/CTLA-4/B7 signaling could be therapeutically useful in clinical transplantation.
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Affiliation(s)
- A Minguela
- Section of Immunology, University Hospital Virgen-Arrixaca, Murcia, Spain
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34
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Torío A, Sánchez-Guerrero I, Muro M, Herrero N, Pagán J, Minguela A, Marín L, Moya-Quiles MR, Sanchís MJ, Alvarez-López MR. Analysis of the phenotypic distribution of HLA class I and class II in atopic and non-atopic asthma patients. Eur J Immunogenet 2000; 27:81-5. [PMID: 10792423 DOI: 10.1046/j.1365-2370.2000.00205.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In several studies the HLA system has been implicated in the development of asthma, but the importance of the associations between HLA genes and asthma remains unclear. The aim of this study was to determine the HLA class I and II phenotypic frequencies in a population of asthmatics, and to analyse the relationship between these phenotypes and any type of asthma. We typed HLA class I and II antigens in a series of 189 asthmatic individuals (102 atopic and 87 non-atopic), and in a control population of 150 unrelated healthy Caucasoid donors. When the HLA phenotypic frequencies were compared, no statistical differences were found. Therefore, no definitive HLA association could be established with atopic or non-atopic asthma in the studied population. Abbreviations AA, atopic asthma; FEV1, forced expiratory volume in 1 s; NAA, non-atopic asthma; PCR, polymerase chain reaction; SSOP, sequence-specific oligonucleotide probes; SPT, skin prick test.
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Affiliation(s)
- A Torío
- Immunology Section, University Hospital 'Virgen de la Arrixaca, Murcia, Spain
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35
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Minguela A, Ramírez P, Carrascosa C, Majado MJ, Munitiz V, Hernández Q, Loba M, Muñóz A, Chavez R, Alvarez-López MR, Sánchez-Bueno F, Parrilla P. Identification of porcine proteins in baboon sera after pig liver xenotransplantation. Transplant Proc 1999; 31:2635-7. [PMID: 10500753 DOI: 10.1016/s0041-1345(99)00480-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- A Minguela
- Immunology Unit, University Hospital Virgen de la Arrixaca, Murcia, Spain
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36
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Muro M, Marín L, Torío A, Moya-Quiles MR, Ontañón J, Minguela A, Alemany JM, Sánchez-Bueno F, García-Alonso AM, Alvarez-López MR. Effect of HLA matching on liver graft survival. Transplant Proc 1999; 31:2477-9. [PMID: 10500678 DOI: 10.1016/s0041-1345(99)00425-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- M Muro
- Immunology Section, University Hospital Virgen de la. Arrixaca, Murcia, Spain
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Minguela A, Ramírez P, Majado MJ, Hernández Q, Munitiz V, Loba M, Muñóz A, Alvarez-López MR, Chavez R, Pino G, Robles R, Parrilla P. Peripheral blood cell subsets in baboon recipients of porcine liver xenotransplantation. Transplant Proc 1999; 31:2638-40. [PMID: 10500754 DOI: 10.1016/s0041-1345(99)00481-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- A Minguela
- Immunology Unit, University Hospital Virgen de la Arrixaca, Murcia, Spain
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38
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Minguela A, Bermejo J, Pons JA, Miras M, Torio A, Marin L, García-Alonso AM, Ramírez P, Alvarez-López MR. HLA class I expression on peripheral blood lymphocytes and hepatocytes after liver transplantation. Transplant Proc 1999; 31:2466-8. [PMID: 10500673 DOI: 10.1016/s0041-1345(99)00420-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- A Minguela
- Immunology Section, University Hospital Virgen de la Arrixaca, Murcia, Spain
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39
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Minguela A, Torío A, Marín L, Muro M, Villar LM, Díaz J, Ramírez P, Parrilla P, García-Alonso AM, Alvarez-López MR. Implication of soluble and membrane HLA class I and serum IL-10 in liver graft acceptance. Hum Immunol 1999; 60:500-9. [PMID: 10408799 DOI: 10.1016/s0198-8859(99)00016-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Membrane HLA class-I expression (mHLA-I), soluble HLA class-I antigens (sHLA-I) and interleukin (IL)-10 are different factors implicated in the special acceptance of liver allograft. In this study, pre- and post-operative levels of mHLA-I in peripheral blood lymphocytes (PBL) and serum sHLA-I were analyzed in 86 liver transplants, immunosuppressed with Cyclosporine-A, methylprednisolone and azathioprine, and classified into acute-rejection (AR, n = 28) and non-acute-rejection (NAR, n = 58) groups. Serum IL-10 was studied in 47 recipients (AR-group, n = 16 and NAR-group, n = 31). Pre-transplant values of mHLA-I and sHLA-I showed a bimodal distribution (high/low) in NAR-recipients, but in AR-patients were mainly included in the low expression/secretion zone (mHLA-I, p < 0.02 and sHLA-I, p < 0.05). Consequently, average pre-transplant mHLA-I (868 +/- 109 versus 998 +/- 123, p < 0.05) and sHLA-I (1.3 +/- 0.4 versus 2.02 +/- 0.7 microg/ml, p < 0.01) was lower in the AR- than in the NAR-group. After transplant both parameters decreased in the NAR-group, but increased in AR-recipients previous to and on rejection diagnosis day. Additionally, serum IL-10 levels were significantly higher (p < 0.01) in the NAR than in the AR-group during the first 24 h post-transplant. In conclusion, low pre-transplant mHLA-I and sHLA-I levels pre-dispose liver recipients to acute rejection, whereas early post-transplant increases of serum IL-10 appear to be related to a good liver allograft acceptance.
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Affiliation(s)
- A Minguela
- Section of Immunology, University Hospital Virgen-Arrixaca, Murcia, Spain
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40
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Minguela A, Torío A, Marín L, Sánchez-Bueno F, García-Alonso AM, Ontañón J, Parrilla P, Alvarez-López MR. Implication of Th1, Th2, and Th3 cytokines in liver graft acceptance. Transplant Proc 1999; 31:519-20. [PMID: 10083217 DOI: 10.1016/s0041-1345(98)02110-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- A Minguela
- Immunology Section, University Hospital Virgen de la Arrixaca, Murcia, Spain
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41
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Minguela A, Marín L, Torío A, Muro M, Ontañón J, Alemany JM, Sánchez-Bueno F, Parrilla P, Alvarez-López MR. CD30+ and CD27- lymphocytes in liver transplant: Th2 cytokine secretion. Transplant Proc 1999; 31:516-8. [PMID: 10083216 DOI: 10.1016/s0041-1345(98)01735-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- A Minguela
- Immunology Section, University Hospital Virgen de la Arrixaca, Murcia, Spain
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42
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Ontañón J, Muro M, García-Alonso AM, Minguela A, Torío A, Bermejo J, Pons JA, Campos M, Alvarez-López MR. Effect of partial HLA class I match on acute rejection in viral pre-infected human liver allograft recipients. Transplantation 1998; 65:1047-53. [PMID: 9583864 DOI: 10.1097/00007890-199804270-00007] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Acute rejection in liver transplants is one of the commonest causes of liver dysfunction in the early postoperative period. However, the factors involved in liver graft rejection are still unknown. Our study was aimed at ascertaining whether the degree of HLA class I and class II compatibility or pretransplant viral infection have any influence on early acute liver graft rejection. METHODS We reviewed clinical and laboratory data in 190 consecutive patients who underwent a liver transplant. HLA-A, HLA-B, and HLA-DR typing for the establishment of an HLA match score was performed by a standard microcytotoxicity method. The existence of pretransplant viral infection was investigated in sera and biopsy tissue by serologic (hepatitis B virus, hepatitis C virus) and polymerase chain reaction (cytomegalovirus) techniques, respectively. The influence of these two factors in acute rejection and the interaction between them was also analyzed. RESULTS A strong association between viral infection and acute rejection in the group with partial class I matching was found (odds ratio=7.75; P<0.0009), whereas no correlation was observed in the group with zero class I matching (odds ratio=0.98; P=0.81). The rejection percentage in the group in which partial class I match and viral infections coexisted was 60%, whereas in the partially class I-matched group without pretransplant viral presence it was 16%. CONCLUSIONS These findings suggest a participation of partial HLA class I compatibility in triggering acute rejection in recipients suffering preoperative viral infections and support the idea that HLA class I antigen matching could play a role as a linking element between the MHC-restricted T cell-mediated response to viral infection and the allogenic response in liver transplantation.
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Affiliation(s)
- J Ontañón
- Immunology Section, Department of Medical Gastro-Enterology, Hospital University Virgen de la Arrixaca, Murcia, Spain
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Muro M, Alvarez-López MR, Torío A, Ontañón J, Minguela A, Marín L, García-Calatayud MC, Bermejo J, García-Alonso AM. HLA-DRB1 and -DQB1 polymorphism in liver recipients: relationship between HLA-DQB1*0302 allele frequency and acute rejection. Hum Immunol 1997; 56:70-6. [PMID: 9455495 DOI: 10.1016/s0198-8859(97)00144-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Polymorphism of HLA-DRB1 and HLA-DQB1 loci was performed in fifty-three orthotopic liver graft recipients as well as in 108 unrelated healthy controls. Nonradioactive SSOPs were used to study PCR-amplified DNA from peripheral blood lymphocytes and biopsied material. The comparison frequency for DQB1 alleles did not reveal any significant differences between the total group of liver recipients and controls. However, when the liver recipients were subgrouped according to their rejection episode manifestations, increased and significant frequencies were observed for HLA-DQB1*0302 allele in patients showing acute rejection episodes compared to healthy controls or patients without acute rejection. This relationship did not appear influenced by the amino acid beta alanine residue in the 57th position. On the other hand, the study of the DRB1 allele frequencies did not show significant differences in any study. These results suggest that HLA-DQB1 genes could be important in the liver graft alloresponses, opening a way to a better understanding of the special tolerance state, normally observed in this type of transplant, leading us to consider the possible HLA-DQB1*0302 allele effect on tolerance rupture.
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Affiliation(s)
- M Muro
- Department of Immunology, University Hospital Virgen de la Arrixaca, Murcia, Spain
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44
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García-Alonso AM, Minguela A, Muro M, Ontañón J, Torío A, Marín L, López-Segura P, Miras M, Alvarez-López MR. CD28 expression on peripheral blood T lymphocytes after orthotopic liver transplant: upregulation in acute rejection. Hum Immunol 1997; 53:64-72. [PMID: 9127149 DOI: 10.1016/s0198-8859(97)00026-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Despite immunosuppressive treatments, acute rejection remains a significant cause of graft loss. Efficient allorecognition implicates cognate T-cell interactions and requires costimulatory signals such as those delivered via CD28. Therefore, we have studied CD28 peripheral blood T-cell expression, analyzing its possible implications in liver allograft acute rejection. Fifty-five CsA-immunosuppressed orthotopic liver recipients, with or without acute rejection (AR and NAR) were immunocytometrically monitored after transplant and thirty healthy volunteers were studied as controls. In liver recipients the absolute number of CD28+ cells fell sharply immediately after transplant, but no significant differences were detected between the AR and NAR groups either in the absolute number or in the percentage of CD28+ lymphocytes. By contrast, both CD4+CD28+ and CD8+CD28+ T-cell subsets displayed a significant increase in CD28 intensity expression in AR recipients, whereas CD28 expression was significantly downregulated in the NAR recipients. This data suggests that CD28 molecule can be important in the immunologic events preceding acute rejection and that CD28 up- or downregulation could become a useful predictive marker for acute rejection or tolerance development in liver recipients.
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Affiliation(s)
- A M García-Alonso
- Immunology Section, University Hospital Virgen de la Arrixaca, Murcia, Spain
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Minguela A, García-Alonso AM, Marín L, Torio A, Sánchez-Bueno F, Bermejo J, Parrilla P, Alvarez-López MR. Evidence of CD28 upregulation in peripheral T cells before liver transplant acute rejection. Transplant Proc 1997; 29:499-500. [PMID: 9123102 DOI: 10.1016/s0041-1345(96)00226-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- A Minguela
- Immunology Section, University Hospital V. Arrixaca, Murcia, Spain
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46
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Minguela A, Alvarez-López MR, Sánchez-Bueno F, Torío A, Muro M, Robles R, Pons JA, Parrilla P, García-Alonso AM. Presence of different T and B-peripheral blood lymphocyte subsets in liver transplantation after cyclosporine or OKT3 immunosuppressive treatment. Transplant Proc 1995; 27:2317-8. [PMID: 7652825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- A Minguela
- Immunology Section, University Hospital V Arrixaca, Murcia, Spain
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