Standort in Deutschland, wo man günstige und qualitativ hochwertige Kamagra Ohne Rezept Lieferung in jedem Teil der Welt zu kaufen.

Wenn das Problem der Verringerung der Potenz berührt mich persönlich war ich schockiert, dass das passiert gerade mit mir levitra Übrigens jeder leisten und gibt eine sofortige Wirkung ohne Hausarbeiten Anwendungen.

Doi:10.1016/j.humimm.2004.09.014

Severe, Late-onset Graft-Versus-Host
Disease in a Liver Transplant Recipient
Documented by Chimerism Analysis

Marilyn S. Pollack, Kermit V. Speeg,
Natalie S. Callander, Cesar O. Freytes,
Alfredo A. Espinoza, Robert M. Esterl,
Gregory A. Abrahamian,
W. Kenneth Washburn, and Glenn A. Halff

ABSTRACT: A 52-year-old liver transplant recipient
identical brother, but he died 5 days after transplantation presented 8 months after transplantation with oral thrush, of overwhelming Candida kruseii infection. To our knowl- then 3 days later with oral ulcers and a diffuse rash, and edge, this is the first chimerism-analysis– documented 5 days later with an acutely reduced white blood cell case of severe acute GVHD presenting so late after liver count, rash, fever, and diarrhea. Bone marrow biopsy transplantation. It is of note that the patient had no revealed severe aplasia. Although graft-versus-host disease known risks for GVHD in that he was relatively young (GVHD) was considered, the late onset of these symptoms and shared only one major human leukocyte antigen with was felt to render this etiology unlikely because GVHD his donor. Consideration should be given to GVHD as a usually occurs 2 to 6 weeks after transplantation. All cause of bone marrow aplasia at any time after organ potentially myelosuppressive medications were discontin- transplantation. Storage of cell pellets from all transplant ued, and the patient was treated with high doses of recipients and donors is highly recommended to facilitate hematopoietic growth factors. Because his symptoms con- tinued, chimerism analysis was performed, which indi- 28 –31 (2005). American Society for Histocompatibil- cated that 96% of the peripheral blood mononuclear cells ity and Immunogenetics, 2005. Published by Elsevier Inc.
were of liver-donor origin. Ultimately, the patient under-went an allogeneic peripheral blood hematopoietic pro- KEYWORDS: liver transplantation; graft versus host
genitor cell transplant from a human leukocyte antigen– ABBREVIATIONS
BM
INTRODUCTION
Graft-versus-host disease (GVHD) occurs when a trans- cells that mount an immune response against recipient plant donor’s T lymphocytes differentiate into effector tissues. This is a frequent complication of allogeneichematopoietic progenitor cell (HPC) transplantation be-cause of the planned infusion of large numbers of immu- From the Departments of Pathology (M.S.P), Medicine (K.V.S., N.S.C., nocompetent cells into an immunocompromised host. In C.O.F., A.A.S), and Surgery (R.M.E., G.A.A., W.K.W., G.A.H.), Uni- solid organ transplantation, GVHD is an infrequent but versity of Texas Health Science Center, San Antonio, TX, USA. serious complication and generally only occurs for trans- Address reprint requests to: Dr. Marilyn S. Pollack, Department of Pathology, University of Texas Health Science Center, 7703 Floyd Curl plants involving organs with relatively large numbers of Drive, San Antonio, TX 78229; Tel: (210) 567-5698; Fax: (210) passenger lymphocytes, notably for liver and intestine 358-0777; E-mail: Pollack@uthscsa.edu. transplantation. Skin and gut manifestations of GVHD Received June 29, 2004; revised September 24, 2004; accepted September in liver transplant recipients resemble those observed in Human Immunology 66, 28 –31 (2005)
American Society for Histocompatibility and Immunogenetics, 2005
HPC transplant recipients, including skin rash and di- weeks), and prednisone (5 mg daily). He had no episodes arrhea. However, liver transplant recipients with GVHD of rejection and had normal liver enzymes, with gradual typically lack evidence of liver dysfunction and instead resolution of the renal insufficiency that had predated his have severe pancytopenia and bone marrow (BM) aplasia not usually seen in HPC transplant recipients. The di- At 8 months after transplant, the patient presented agnosis of GVHD in organ transplant recipients is with oral thrush, which was treated with fluconazole.
largely a clinical one, but recently, more sophisticated Three days later, he presented with a sore throat, oral testing that allows the detection of donor organ– derived ulcers, and a diffuse rash; fluconazole therapy was cells in affected tissue sites can confirm the clinical stopped. His white blood cell (WBC) count, which had suspicion and prevent institution of inappropriate ther- been normal, was 2500/␮l and then acutely dropped over apy. For example, a skin rash with infiltrating donor the next 5 days to 0.1 ␮l/ml, accompanied by severe lymphocytes should probably not be treated as a drug- anemia and thrombocytopenia. The patient was admitted induced toxicity with concomitant reduction of a partic- with a 1-day history of temperature to 40°C, diffuse maculopapular rash, diarrhea, and abdominal pain. Blood The primary risk factor for the development of cultures were negative, as were tests for cytomegalovirus.
GVHD in organ transplant recipients is considered to be A BM biopsy on the second hospital day revealed no a relatively low degree of human leukocyte antigen aspirable elements and an overall cellularity of 10%.
(HLA) mismatching between the donor and recipient, Special stains for mycobacteria and fungi were negative.
such as in cases of related-donor (usually parent to child) Although GVHD was considered, the majority of the liver transplants or donors homozygous for antigens at staff believed that the long interval between transplan- most or all HLA loci. A recent meta-analysis of tation and the patient’s presentation made GVHD un- factors increasing the risk for GVHD concluded that in likely. Instead, it was believed that the rash and marrow addition to low HLA mismatching, a relatively large age aplasia were a result of drug therapy including valgan- discrepancy (Ͼ40 years) between donor (younger) and ciclovir and Septra. Both of those drugs were discontin- recipient (older) and recipient age over 65 years were ued, and he was treated with broad-spectrum antibiotics contributing risk factors, presumably as a result of loss of and large doses of erythropoietin and Filgrastim. Because immune responsiveness (against donor lymphocytes) as a he clinically stabilized, he was discharged to home with function of age. Organ transplant–related GVHD has oral antibiotics and growth factors.
only been documented to occur for the first time within The patient was subsequently readmitted 5 days later the first few months after organ transplantation with recrudescence of the rash and fever. Meanwhile, a when immunosuppression of the recipient is at its high- skin biopsy that had been performed during his first est level and presumably because donor lymphocytes admission was read by a hematopathologist as consistent surviving beyond that time have become tolerant to with grade II GVHD. Chimerism analysis of separated recipient mismatches. We describe here a liver transplant peripheral blood (PB) mononuclear cells (MNCs) and patient presenting for the first time 8 months after granulocytes and total BM nucleated cells (the sample transplantation with clinical and subsequent confirma- was too acellular to analyze separated BM MCs) was then performed. Stored, pretransplant WBC pellets from boththe recipient and donor were available for comparison.
DNA from all samples was extracted by means of a CASE REPORT
standard Qiagen protocol. The chimerism analysis was This case involves a 52-year-old Hispanic man, blood done with an ABI sequencer with a Promega PowerPlex type O positive, who received an orthotopic liver trans- System in which ten polymorphic, single tandem repeat plant for end-stage liver disease from alcoholic cirrhosis.
system alleles and the X versus Y chromosome marker The donor was a 53-year-old woman, blood type O Amelogenin were simultaneously amplified and labeled positive, who died from a subarachnoid hemorrhage. She with different fluorescent dyes. Polymerase chain reac- had normal liver enzymes. All pretransplant crossmatch tion products with different size (repeat number) poly- tests were negative. The patient underwent an unevent- morphisms were then separated from each other by their ful liver transplantation with typical preparation of the rate of migration in a capillary gel. The results indicated organ, including perfusion with recipient blood, and was that all systems tested were informative in one or both discharged 7 days after surgery. According to the routine directions and that virtually all (96%) of the protocols at our institution, he did not receive any PB MCs (largely lymphocytes) were of liver donor origin antilymphocyte induction therapy, and his immunosup- third panel). The PB granulocyte fraction was pression over the next 8 months consisted of low-dose 75% donor, 30% recipient (data not shown). The BM tacrolimus, mycophenolate mofetil (tapered off after 14 total nucleated cells appeared to be only 30% of donor tation This case report illustrates that acute GVHD can manifest for the first time many months after livertransplantation. No precipitating cause for its occurrence could be clearly identified. There was no change in the patient’s immunosuppressive regimen, he did not receive any blood transfusions, and he had no evidence for any systemic inflammatory response. The lack of any rejection episodes was not indicative of unusual hypoimmunity be- cause approximately 90% of the more than 120 liver transplant recipients we treat per year at our institution also do not experience any rejection episodes, but this is our first case of documented GVHD. There is, however, a theoretic possibility that, as occurs in many autoimmune diseases, the immune response to his local fungal infectionactivated donor lymphocytes, which then became sensi-tized to shared epitopes present in noninfected recipient origin last panel), but because the BM was soaplastic, it was presumed that the sample contained morerecipient-derived stromal cells than cells of hematopoi-etic lineage. Graft-versus-host disease was then diag-nosed as the certain cause of the BM aplasia. Surpris-ingly, an analysis of the patient and donor HLAphenotypes indicated only a single major an-tigen match (HLA-B35), with two mismatches forHLA-A, one for HLA-B, two for HLA-C, two for HLA-DR, and two for HLA-DQ.
A review of the literature indicated that both increasing and decreasing immunosuppression have been usedsuccessfully in treating organ-transplant-related acuteGVHD, although outcomes have generally been poor,regardless of treatment, with a mortality that exceeded75% In this case, a course of OKT3 was provided astherapy for the GVHD. Although OKT3 reduced the totallymphocyte count even further, there was no recovery ofthe total WBC count, and repeat chimerism analysis in-dicated that the proportion of donor MCs remained thesame. Because the therapy with OKT3 failed to control theGVHD, the patient underwent an allogeneic PB HPCtransplant from an HLA-identical sibling after condition-ing with cyclophosphamide and antithymocyte globulin, acombination routinely used for patients undergoing HPCtransplantation for aplastic anemia. However, despite ag-gressive blood product support, total parenteral nutrition,and broad-spectrum antibiotic and antifungal therapy, thepatient by this time was severely debilitated and had beenpancytopenic for almost 2 months. He developed a dis- Chimerism analysis 8.5 months after transplant seminated Candida kruseii infection and died on the fifth (during severe bone marrow (BM) aplasia). Results for four of day after stem cell transplantation of multiorgan failure the 11 systems tested are shown in the first panel using the with no evidence of marrow recovery.
patient’s pretransplant peripheral blood (PB) DNA; secondpanel, donor PB DNA; third panel, the patient’s 8.5-monthposttransplant PB mononuclear cell DNA (96% donor); and DISCUSSION
last panel, the patient’s 8.5-month posttransplant BM aspiratetotal nucleated cell DNA (30% donor). D ϭ donor-specific Liver transplant recipients who develop acute, rapidly pro- alleles; R ϭ recipient-specific alleles; D, R ϭ shared alleles.
gressing GVHD with large numbers of circulating donor For allele numbers for each system, see Results for the lymphocytes generally do so 2 to 6 weeks after transplan- tory of hyperimmune responses. In addition, as a woman,the liver donor for our patient would also be predicted to have relatively high immune reactivity well known, for example, to cause a greater risk of GVHD for recipients of female HPC transplants possibly derived from expo- sure to alloantigens during pregnancy. Studies of other liver transplant patients with GVHD that look for mul-tiparous female versus male donor status should be con- Abbreviation: HLA ϭ human leukocyte antigen.
sidered to see whether that may be generally considered anadditional risk factor for the development of GVHD after tissues. Whatever the precipitating cause, the resulting liver transplantation. In any case, histocompatibility lab- marrow aplasia evidently stimulated new blood cell for- oratories are strongly encouraged to save test material from mation from donor hematopoietic stem cells that had been all organ transplant recipients and donors, even if their transplanted along with the graft, because in addition to transplant programs do not routinely request HLA typing the donor lymphocytes, 75% of the circulating granulo- for liver transplant recipients. The cost for long-term stor- cytes at the time of GVHD diagnosis were of donor origin.
age of cell pellets is relatively low, and a reference labora- Other reports of GVHD occurring late after transplan- tory can be used if chimerism testing is not available on tation appear to involve more easily treatable chronic site. A rapid diagnosis of GVHD will allow early therapy, GVHD rather than acute GVHD. One previous report giving patients a better chance for recovery.
described recurrent GVHD in two pediatric liver trans-plant recipients at approximately 11 and 7 months after transplantation that had first manifested at approximately We thank Julie B. Forman and Laura M. McNeish for expert 3 and 4 months after transplantation, respectively. For these patients, only about 3% donor cells were detected inthe PB, and both patients responded to temporary discon- REFERENCES
tinuation of immunosuppressive therapy. Dunn et al. 1. Smith DM, Agura E, Netto G, Collins R, Levy M, Goldstein described another child who presented 5 years after liver R, Christensen L, Baker J, Altrabulsi B, Osowski L, McCor- transplantation with intestinal and skin symptoms consis- mack J, Fichtel L, Dawson DB, Domiati-Saad R, Stone M, tent with GVHD. Her PB revealed (only) 1% male cells, Klintmalm G: Liver transplant–associated graft versus host but because she had received six of 16 units of unirradiated disease. Transplantation 75:118, 2003.
blood from male donors, the diagnosis of GVHD could not 2. Pinna AD, Weppler D, Berho M, Masetti M, DeFaria W, be attributed to liver donor lymphocytes; the patient Kato T, Thompson J, Ricordi C, Tzakis AG: Unusual quickly recovered after treatment with a small pulse of presentation of graft-versus-host disease in pediatric liver steroids. It should also be noted that a small degree of transplant recipients: evidence of late and recurrent disease.
chimerism is often found after organ transplant for recip- ients who do not experience any symptoms of GVHD 3. Dunn SP, Krueger LJ, Butani L, Punnett H: Late onset of The patient described in our case report had none of the severe graft-versus-host disease in a pediatric liver trans-plant recipient. Transplantation 71:1483, 2001.
risk factors previously associated with GVHD presentingin the first few weeks after liver transplant in that there 4. Starzl TE: Cell migration and chimerism—a unifying concept was a high degree of HLA mismatching and the recipient in transplantation with particular reference to HLA matchingand tolerance induction. Transplant Proc 25:8, 1993.
was relatively young. However, two other risk factorsmight be implicated in the development of his GVHD.
5. Manabe K, Donaldson PT, Underhill JA, Doherty DG, Mieli-Vergani G, McFarlane JG, Eddleston AL, Williams R: First, the donor was found to have an HLA phenotype Human leukocyte antigen A-1-B8-DR3-DQ2-DPB1*0401 consistent, because of significant linkage disequi- extended haplotype in autoimmune hepatitis. Hepatology librium, with having the HLA haplotype that is most frequently documented to confer a higher than normal risk 6. Chen D, Ueda R, Harding F, Patil N, Mao Y, Kkurahara C, for hyperimmune responses that result in autoimmune Platenburg G, Huang M: Characterization of HLA DR3/ diseases: HLA-A1, B8, DR17 (DR3), DQ2 In this DQ2 transgenic mice: a potential humanized animal model regard, it is intriguing that one of the two patients de- for autoimmune disease studies. Eur Immunol 33:172, 2003.
scribed by Pinna et al. as having recurrent GVHD many 7. Remberger M, Kumlien G, Aschan J, Barkhold L, Hentschke months after transplant also had a donor with this haplo- P, Ljungman P, Mattsson J, Svennilson J, Ringdon O: Risk type (population frequency less than 9%).
factors for moderate-to-severe chronic graft-versus-host dis- Perhaps the persistence after transplantation of immuno- ease after allogeneic hematopoietic stem cell transplantation.
responsive donor lymphocytes is associated with their his- Biol Blood Marrow Transplant 8:674, 2002.

Source: http://www.surgery.uthscsa.edu/faculty/pubs/graftvhost.pdf

indeed-net.eu

SUCHT UND SUBSTANZGEBRAUCHSSTÖRUNG ALS BIO-PSYCHO-SOZIALE PHÄNOMENE Suchterkrankungen, suchtartiges Verhalten und Substanzgebrauchsstörungen haben nun seit einigen Jahren berechtigterweise Aufnahme in die Standarddiagnosen von ICD und DSM gefunden und somit wird ihnen „Krankheitswertigkeit“ zuerkannt. Dies ist von enormer Bedeutung, da bis vor einigen Jahrzehnten diese pathologisch

20054048, 2005/10/04

In the matter of an appeal under Section 21 of the Workplace Health, Safety and Compensation Commission Act , S.N.B. 1994 c. W-14 APPEALS TRIBUNAL DECISION Date of Hearing: Date of Decision: Decision Decision of the Appeals Tribunal: The appellant is appealing the January 21, 2005 decision, upholding the previous decision of December 8,

Copyright © 2010-2014 Internet pdf articles