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https://www.readbyqxmd.com/read/28316437/a-comparative-study-showing-the-potency-of-anti-c3d-and-anti-immunoglobulin-g-in-polyspecific-anti-human-globulin-using-fresh-and-cryopreserved-red-blood-cells
#1
Kanchan Ahuja, Ranjan Kumar Satapathy, Garima Gulati, Surinder Singh
BACKGROUND: The antiglobulin test is used to determine red blood cells (RBCs) having surface-bound immunoglobulin G (IgG) and/or complement (C3b, C3d, C4b, and C4d) free in serum or attached to antigens on RBCs. In such circumstances, the quality of the anti-human globulin (AHG) which is used in routine cross-match/indirect agglutination test plays a vital role in blood transfusion medicine. For potency testing of polyspecific AHG, it is recommended by the Food and Drug Administration and the Centre for Biologics Evaluation and Research to use fresh O +ve RBCs within 1 hr of collection for sensitization with anti-C3d...
January 2017: Asian Journal of Transfusion Science
https://www.readbyqxmd.com/read/28314931/erratum-to-mesangial-c4d-deposition-may-predict-progression-of-kidney-disease-in-pediatric-patients-with-iga-nephropathy
#2
Rafaela Cabral Gonçalves Fabiano, Stanley de Almeida Araújo, Eduardo Alves Bambirra, Eduardo Araújo Oliveira, Ana Cristina Simões E Silva, Sérgio Veloso Brant Pinheiro
No abstract text is available yet for this article.
March 17, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28262211/complement-alternative-pathway-s-activation-in-patients-with-lupus-nephritis
#3
Di Song, Wei-Yi Guo, Feng-Mei Wang, Yong-Zhe Li, Yan Song, Feng Yu, Ming-Hui Zhao
OBJECTIVE: The aim of this study was to detect the spectrum of complement activation pathways in circulation and to assess their correlations with clinical and pathologic features in a large lupus nephritis cohort from China. MATERIALS AND METHODS: Plasma levels of C1q, mannose-binding lectin, C4d, Bb, C3, C3a, C5a and soluble C5b-9 were detected by enzyme-linked immunosorbent assay in 222 patients with active biopsy-proven lupus nephritis, 34 patients with lupus nephritis at remission, 82 patients with active systemic lupus erythematosus without renal involvement and 39 normal controls...
March 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28255002/antibody-mediated-rejection-due-to-preexisting-versus-de-novo-donor-specific-antibodies-in-kidney-allograft-recipients
#4
Olivier Aubert, Alexandre Loupy, Luis Hidalgo, Jean-Paul Duong van Huyen, Sarah Higgins, Denis Viglietti, Xavier Jouven, Denis Glotz, Christophe Legendre, Carmen Lefaucheur, Philip F Halloran
Antibody-mediated rejection (ABMR) can occur in patients with preexisting anti-HLA donor-specific antibodies (DSA) or in patients who develop de novo DSA. However, how these processes compare in terms of allograft injury and outcome has not been addressed. From a cohort of 771 kidney biopsy specimens from two North American and five European centers, we performed a systematic assessment of clinical and biologic parameters, histopathology, circulating DSA, and allograft gene expression for all patients with ABMR (n=205)...
March 2, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28252564/diffuse-extent-of-peritubular-capillaritis-in-late-antibody-mediated-rejection-associations-with-levels-of-donor-specific-antibodies-and-chronic-allograft-injury
#5
Nicolas Kozakowski, Farsad Eskandary, Harald Herkner, Gregor Bond, Rainer Oberbauer, Heinz Regele, Georg A Böhmig, Željko Kikić
BACKGROUND: Recently, diffuse peritubular capillaritis (ptc) has been suggested to independently predict chronic transplant injury and loss and while the ptc score is a diagnostic criterion for antibody-mediated rejection, the utility of diffuse ptc is under debate. METHODS: We evaluated the diagnostic value of ptc characteristics in this cross-sectional study including 85 biopsies of patients with donor-specific antibodies (DSA). Biopsies were reevaluated for the extent (diffuse vs...
March 1, 2017: Transplantation
https://www.readbyqxmd.com/read/28207978/glomerular-c4d-deposits-can-mark-structural-capillary-wall-remodeling-in-thrombotic-microangiopathy-and-transplant-glomerulopathy-c4d-beyond-active-antibody-mediated-injury
#6
Adil H Gasim, Jamie S Chua, Ron Wolterbeek, John Schmitz, Eric Weimer, Harsharan K Singh, Volker Nickeleit
Peritubular capillary C4d (ptc-C4d) usually marks active antibody mediated rejection, while pseudolinear glomerular capillary C4d (GBM-C4d) is of undetermined diagnostic significance, especially when seen in isolation without concurrent ptc-C4d. We correlated GBM-C4d with structural GBM abnormalities and active antibody mediated rejection in 319 renal transplant and 35 control native kidney biopsies. In kidney transplants ptc-C4d was associated with GBM-C4d in 97% by immunofluorescence microscopy (IF) and 61% by immunohistochemistry (IHC; p<0...
February 16, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28197885/c4d-deposits-in-iga-nephropathy-where-does-complement-activation-come-from
#7
EDITORIAL
Rosanna Coppo
No abstract text is available yet for this article.
February 14, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28182088/renal-transplant-patients-biopsied-for-cause-and-tested-for-c4d-dsa-and-igg-subclasses-and-c1q-which-humoral-markers-improve-diagnosis-and-outcomes
#8
James C Cicciarelli, Nathan A Lemp, Youngil Chang, Michael Koss, Katrin Hacke, Noriyuki Kasahara, Kevin M Burns, David I Min, Robert Naraghi, Tariq Shah
The association between donor specific antibodies (DSA) and renal transplant rejection has been generally established, but there are cases when a DSA is present without rejection. We examined 73 renal transplant recipients biopsied for transplant dysfunction with DSA test results available: 23 patients diffusely positive for C4d (C4d+), 25 patients focally positive for C4d, and 25 patients negative for C4d (C4d-). We performed C1q and IgG subclass testing in our DSA+ and C4d+ patient group. Graft outcomes were determined for the C4d+ group...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28151033/graft-immunocomplex-capture-fluorescence-analysis-to-detect-donor-specific-antibodies-and-hla-antigen-complexes-in-the-allograft
#9
Tsukasa Nakamura, Hidetaka Ushigome, Kiyoko Watabe, Yui Imanishi, Koji Masuda, Takehisa Matsuyama, Shumpei Harada, Katsuhiro Koshino, Taku Iida, Shuji Nobori, Norio Yoshimura
BACKGROUND: Immunocomplex capture fluorescence analysis (ICFA) is an attractive method to detect donor-specific anti-HLA antibodies (DSA) and HLA antigen complexes. Currently, antibody-mediated rejection (AMR) due to DSA is usually diagnosed by C4d deposition and serological DSA detection. Conversely, there is a discrepancy between these findings frequently. Thereupon, our graft ICFA technique may contribute to establish the diagnosis of AMR. METHODS: Graft samples were obtained by a percutaneous needle biopsy...
February 2, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28141920/face-transplantation-partial-graft-loss-of-the-first-case-10-years-later
#10
E Morelon, P Petruzzo, J Kanitakis, S Dakpé, O Thaunat, V Dubois, G Choukroun, S Testelin, J-M Dubernard, L Badet, B Devauchelle
Ten years after the first face transplantation, we report the partial loss of this graft. After two episodes of acute rejection (AR) occurred and completely reversed in the first posttransplantation year, at 90 months posttransplantation the patient developed de novo class II donor-specific antibodies, without clinical signs of AR. Some months later, she developed several skin rejection episodes treated with steroid pulses. Despite rapid clinical improvement, some months later the sentinel skin graft underwent necrosis...
January 31, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28135784/morphologic-patterns-and-treatment-of-transplant-glomerulopathy-a-retrospective-analysis
#11
Rui Abreu, Fernanda Carvalho, Helena Viana, Isabel Mesquita, Marília Possante, Inês Aires, Fernando Caeiro, Cecília Silva, Patrícia Cotovio, Aníbal Ferreira, Francisco Remédio, Fernando Nolasco
Transplant glomerulopathy is mainly due to chronic antibody-mediated rejection and actually represents a major cause of long-term allograft failure. The lack of effective treatment remains a serious problem in transplantation. A retrospective and uni-center study was performed in 48 kidney allograft recipients with transplant glomerulopathy between January 2010 and December 2015. Median time for diagnosis was 7.1 (3.6-11.8) years post-transplant. Light microscopy showed severity of transplant glomerulopathy in the majority of patients (cg1=10...
January 30, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28122486/choice-of-induction-in-the-era-of-single-antigen-bead-testing-an-idiosyncratic-case-report
#12
Alexandre Hertig
Use of induction therapy after kidney transplant is based on immunologic risk status, but accurate assessment of risk in the era of advanced immunologic testing can be complex. Here, we describe the case of a young kidney recipient who had a Castleman disease, often regarded as a benign lymphoma. Our patient, a white male patient with Castleman disease, underwent a first kidney transplant with rabbit antithymocyte globulin induction but returned to dialysis after primary nonfunction occurred. A second donor became available who shared 3 class I HLA antigens with the first donor, but only low-level isolated donor-specific antibodies toward HLA-Cw were detected (mean fluorescence intensity < 1000)...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28104301/differences-in-pathologic-features-and-graft-outcomes-in-antibody-mediated-rejection-of-renal-allografts-due-to-persistent-recurrent-versus-de-novo-donor-specific-antibodies
#13
Mark Haas, James Mirocha, Nancy L Reinsmoen, Ashley A Vo, Jua Choi, Joseph M Kahwaji, Alice Peng, Rafael Villicana, Stanley C Jordan
Antibody-mediated rejection (ABMR) of renal allografts occurs in two forms. Type 1 ABMR results from persistence and/or a rebound of preexisting donor-specific antibodies in sensitized patients and usually occurs early post-transplantation. Type 2 ABMR is associated with de novo donor-specific antibodies and usually occurs over one year post-transplantation. It is generally accepted that types 1 and 2 also differ with regard to certain pathologic features including the frequencies of C4d positivity and concurrent cell-mediated rejection...
January 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28104146/successful-rescue-of-late-onset-antibody-mediated-rejection-12-years-after-living-donor-intestinal-transplantation-a-case-report
#14
G S Wu, Q C Zhao, Z S Li, Y Wu, W Z Wang, M B Li, H Shi, M Wang, D L Chen, J Y Zheng, X Wang, D M Fan
BACKGROUND: Antibody-mediated rejection (ABMR) has recently surfaced as a potential form of graft dysfunction after intestinal transplantation. METHODS: We present a case of an intestinal transplant recipient who developed late-onset ABMR 12 years after living-donor transplantation. An 18-year-old male recipient with a history of extensive intestinal resection secondary to acute bowel volvulus exhibited an excellent baseline immune profile for transplantation, including ABO-identical and HLA-haploidentical to the donor; a negative cross-match with a panel reactive antibody of 3...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28104125/efficacy-of-eculizumab-therapy-for-atypical-hemolytic-uremic-syndrome-recurrence-and-antibody-mediated-rejection-progress-after-renal-transplantation-with-preformed-donor-specific-antibodies-case-report
#15
T Yamamoto, Y Watarai, K Futamura, M Okada, M Tsujita, T Hiramitsu, N Goto, S Narumi, A Takeda, T Kobayashi
Atypical hemolytic uremic syndrome (aHUS) develops as the result of unregulated complement progression and precipitates de novo thrombotic microangiopathy. Plasma therapy is used to control the progression of the complement cascade, but that therapy is not effective in all patients and is accompanied by risk of infection and/or allergy. Eculizumab has been reported as an efficient therapy for aHUS. We report the case of a 35-year old woman who underwent effective eculizumab therapy for aHUS recurrence and antibody-mediated rejection (AMR) progress after renal transplantation with preformed donor-specific antibodies (DSA)...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28101959/comprehensive-analysis-of-transcript-changes-associated-with-allograft-rejection-combining-universal-and-selective-features
#16
P F Halloran, J M Venner, K S Famulski
We annotated the top transcripts associated with kidney transplant rejection by p-value, either universal for all rejection or selective for T cell-mediated rejection (TCMR) or antibody-mediated rejection (ABMR; ClinicalTrials.gov NCT01299168). We used eight class-comparison algorithms to interrogate microarray results from 703 biopsies, 205 with rejection. The positive comparators were all rejection, TCMR, or ABMR; the negative comparators varied from normal biopsies to all nonrejecting biopsies, including other diseases...
January 19, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28060108/diagnostic-utility-of-complement-immunohistochemical-studies-in-post-stem-cell-transplant-intestinal-thrombotic-microangiopathy-case-report
#17
Jenna E Rossoff, Jennifer Schneiderman, Sonali Chaudhury, Nicoleta C Arva
Thrombotic complications are a significant source of morbidity and mortality following hematopoietic stem cell transplants. Among them, transplant-associated thrombotic microangiopathy (TA-TMA) is a well-recognized syndrome that can affect various organ systems. Its etiology is related to endothelial injury accompanied by complement activation. As many of the signs and symptoms of the disease are also encountered in other complications following hematopoietic stem cell transplant, it can often be difficult to establish the diagnosis based on clinical data alone...
January 5, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28060025/antibody-mediated-rejection-what-is-the-clinical-relevance
#18
Rachel Hogen, Joseph DiNorcia, Kiran Dhanireddy
PURPOSE OF REVIEW: The review outlines the diagnosis, clinical implications, and treatment strategies for acute and chronic antibody-mediated rejection (AMR) after orthotopic liver transplantation (OLT). RECENT FINDINGS: A combination of clinical work-up, histopathology, C4d staining, and donor-specific antibody (DSA) should be used to diagnose AMR. The differential diagnosis for idiopathic fibrosis now includes chronic AMR. Characterization of pathogenic DSA continues to progress...
January 3, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28058223/acute-antibody-mediated-rejection-after-intestinal-transplantation
#19
Guo-Sheng Wu, Ruy J Cruz, Jun-Chao Cai
AIM: To investigate the incidence, risk factors and clinical outcomes of acute antibody-mediated rejection (ABMR) after intestinal transplantation (ITx). METHODS: A retrospective single-center analysis was performed to identify cases of acute ABMR after ITx, based on the presence of donor-specific antibody (DSA), acute tissue damage, C4d deposition, and allograft dysfunction. RESULTS: Acute ABMR was identified in 18 (10.3%) out of 175 intestinal allografts with an average occurrence of 10 d (range, 4-162) after ITx...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28031317/coffee-intake-cardiovascular-disease-and-all-cause-mortality-observational-and-mendelian-randomization-analyses-in-95%C3%A2-000-223%C3%A2-000-individuals
#20
Ask Tybjærg Nordestgaard, Børge Grønne Nordestgaard
BACKGROUND: Coffee has been associated with modestly lower risk of cardiovascular disease and all-cause mortality in meta-analyses; however, it is unclear whether these are causal associations. We tested first whether coffee intake is associated with cardiovascular disease and all-cause mortality observationally; second, whether genetic variations previously associated with caffeine intake are associated with coffee intake; and third, whether the genetic variations are associated with cardiovascular disease and all-cause mortality...
December 28, 2016: International Journal of Epidemiology
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