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11.
Y Nakamura K Yoshida S Itoh Y Kanai H Tsuda H Hashimoto N Mitsuhashi Y Kuwabara 《American journal of reproductive immunology (New York, N.Y. : 1989)》1999,41(5):307-311
PROBLEM: Our purpose was to study the effect of maternal immunoadsorption plasmapheresis (IA) on the outcome of pregnancies complicated by systemic lupus erythematosus (SLE) with positive antiphospholipid antibodies, which were known to have a strong correlation with abortion or stillbirth. METHOD OF STUDY: Eight pregnancies in 7 patients with SLE were treated according to our protocol. They were all positive for the lupus anticoagulant. The treatments provided in these cases were as follows: an oral low-dose steroid; oral low-dose aspirin; and IA. The outcomes of the pregnancies were then studied. RESULTS: Of eight pregnancies, seven resulted in preterm deliveries, and cesarean sections were performed at 26-36 weeks of gestation. In one case, intrauterine fetal death occurred at 24 weeks of gestation. The other seven pregnancies resulted in live births (survival rate of 87.5%). CONCLUSION: IA improves the outcome of pregnancy complicated by SLE with positive antiphospholipid antibodies, without increasing steroid dosage. 相似文献
12.
Ralf Müller Christiane Dahler Christian Möbs Elke Wenzel Rüdiger Eming Gerald Messer Andrea Niedermeier Michael Hertl 《Clinical immunology (Orlando, Fla.)》2010,135(1):99-107
Epidermolysis bullosa acquisita (EBA) is a severe immunobullous disease and is caused by IgG against type VII collagen (Col VII) of anchoring fibrils. In this study, utilizing ELISA and immunoblot, 13/15 EBA sera but 0/20 bullous pemphigoid sera and 0/30 healthy control sera showed IgG reactivity with distinct recombinant subregions of the non-collagenous domain 1 (NC1) of Col VII. In two EBA patients, IgG titers against Col VII-NC1 were grossly correlated to clinical disease activity. Moreover, Col VII-reactive T cells were identified in a representative EBA patient which recognized identical subdomains of Col VII-NC1. These findings strongly suggest that (1) the Col VII-NC1 ELISA is a powerful tool for making the diagnosis of EBA, (2) Col VII-specific IgG grossly relates to disease activity and (3) IgG reactivity is associated with T cell recognition of identical subdomains of Col VII-NC1. 相似文献
13.
Thomas Thomaidis Corinna Schorn Wolfram Flaig Gerwinn Lingg Elke Schönhals Reinhard Klingel Peter R. Galle Andreas Schwarting 《Journal of clinical apheresis》2009,24(1):37-41
Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease affecting multiple organs and tissues. Although there is a wide range of therapeutic applications, the coexistence of severe side effects and contraindications outlines the necessity of new therapeutic options in the treatment of severe RA. We report on the case of a 71‐year‐old patient with successful treatment of a complicated RA with tryptophan immunoadsorption combined with low‐dose steroids. Bacterial spondylitis developed in this patient during long‐term treatment with infliximab and methotrexate. Weekly immunoadsorption sessions with tryptophan columns resulted in continuous suppression of RA activity over a period of more than 5 months, as indicated by laboratory findings, the disease activity score, and the visual analog scale. This is the first report of successful treatment of a refractory and complicated RA using tryptophan immunoadsorption columns. In conclusion, immunoadsorption is a safe and effective therapeutic alternative, which should be considered to bridge infectious complications in patients with severe RA. J. Clin. Apheresis, 2009. © 2009 Wiley‐Liss, Inc. 相似文献
14.
Kunkel S Holtz M Grossjohann B Schuett W Klinkmann H Kong D Yamada R Kimura H Matic GB Ramlow W Boeden HF 《Artificial organs》2002,26(2):124-132
The principle of a patient-specific immunoadsorber (PsIA) is demonstrated. Studies with model systems (HSA/anti-HSA) on immobilization, stability, and leakage form the basis for the presented fast-performance liquid chromatography (FPLC) and batch experiments, which were conducted using two different protein A adsorbers and autologous and heterologous PsIA systems. Experiments to determine the binding capacity of protein A adsorbers and PsIAs are described. In all experiments, the adsorption of plasma IgG, total protein, and C1q and C3d circulating immune complexes were measured. Plasma of patients with autoimmune diseases (rheumatoid arthritis, systemic lupus erythematosus) was investigated. Analysis was performed in both the initial plasma and the flow-through or supernatant. Results of the investigations using FPLC and batch experiments were compared. Autologous PsIA systems are suitable for the selective removal of elevated levels of circulating immune complexes in the plasma. 相似文献
15.
Watts A Foley A Awwad M Treter S Oravec G Buhler L Alwayn IP Kozlowski T Lambrigts D Gojo S Basker M White-Scharf ME Andrews D Sachs DH Cooper DK 《Xenotransplantation》2000,7(3):181-185
Abstract: Background: Anti‐Galα1–3Gal (Gal) antibodies (Gal Ab) contribute to the rejection of porcine organs transplanted into primates. Extracorporeal immunoadsorption (EIA) has been developed to eliminate Gal Ab from the circulation. Methods: Between 1995 and 1999 we performed 320 EIAs in baboons using a COBE‐Spectra apheresis unit incorporating a synthetic Gal immunoaffinity column. Three plasma volumes were immunoadsorbed on each occasion. The 221 consecutive EIAs performed in 41 immuno‐suppressed baboons between January 1997 and April 1999 form the basis of this review. Of these 41 baboons, 29 underwent a series of three or four EIAs at daily intervals, seven had multiple series of three EIAs, and the remainder underwent single or double EIAs. Serum Gal Ab levels were monitored by ELISA before and at intervals after the course of EIA. Results: There were two fatal complications, one from a respiratory mishap (unrelated to the EIA) and one from persistent hypotension unresponsive to therapeutic interventions. Seven procedures (3%) were terminated early owing to technical difficulties and/or persistent hypo‐tension. Mean pre‐EIA Gal Ab levels in naïve baboons were 33.1 µg/ml (IgM) and 14.5 µg/ml (IgG). Immediately after three consecutive EIAs, IgM was depleted by a mean of 97.3% and IgG by 99.4%. By 18 to 24 h later, Gal Ab was returning but depletion remained at 80.1% (IgM) and 84.7% (IgG). The subsequent rate of return of Gal Ab depended on the immunomodulatory protocol used. Conclusions: (1) With appropriate monitoring, EIA is an acceptably safe procedure, even in small (< 10 kg) baboons. (2) Three consecutive EIAs are effective in removing > 97% of Gal Ab. (3) In the majority of cases, return of Gal Ab begins within 24 h, irrespective of the immuno‐modulatory protocol. 相似文献
16.
E. BERNTORP 《Haemophilia》2006,12(S6):62-66
Summary. Inhibitor patients do not always respond satisfactorily to treatment with bypassing agents, and options to the standard practice are sometimes needed. Temporary inhibitor removal may be achieved using extracorporeal immunoadsorption. This technique uses a column system including either protein A or antihuman IgG. Immunoadsorption may be used as part of an immune tolerance protocol, or in the case of acute bleeds or prior to surgery, thus rendering the patient more responsive to ordinary replacement therapy with factor VIII or factor IX. Desmopressin is a valuable haemostatic agent in many situations and can be especially recommended in mild haemophilia complicated by an inhibitor. Antifibrinolytics are often administered as an adjunct therapy to the treatment protocol and have also been reported to have a direct anti-inhibitor effect. 相似文献
17.
Nakatsuji Y Kaido M Sugai F Nakamori M Abe K Watanabe O Arimura K Sakoda S 《Acta neurologica Scandinavica》2000,102(4):271-273
We report a 70-year-old woman with Isaacs' syndrome (acquired neuromyotonia) who showed a marked improvement after immunoadsorption plasmapheresis (IAP). She developed hyperhidrosis in her teens, and slowly progressive symptoms of neuromyotonia for over 50 years. An in vitro investigation of her serum with patch-clamp technique suggested the presence of antibodies against potassium channels. She was treated with IAP, which brought disappearance of her symptoms. Though the symptoms started to recur in 3 weeks, moderate improvement has been maintained by immunosuppressive drug treatment. 相似文献
18.
Immunoadsorption in Severe C4d-Positive Acute Kidney Allograft Rejection: A Randomized Controlled Trial 总被引:2,自引:0,他引:2
G. A. Böhmig M. Wahrmann H. Regele M. Exner B. Robl K. Derfler T. Soliman P. Bauer M. Müllner W. Druml 《American journal of transplantation》2007,7(1):117-121
Antibody-mediated rejection (AMR) frequently causes refractory graft dysfunction. This randomized controlled trial was designed to evaluate whether immunoadsorption (IA) is effective in the treatment of severe C4d-positive AMR. Ten out of 756 kidney allograft recipients were included. Patients were randomly assigned to IA with protein A (N = 5) or no such treatment (N = 5) with the option of IA rescue after 3 weeks. Enrolled recipients were subjected to tacrolimus conversion and, if indicated, 'anti-cellular' treatment. All IA-treated patients responded to treatment. One death unrelated to IA occurred after successful reversal of rejection. Four control subjects remained dialysis-dependent. With the exception of one patient who developed graft necrosis, non-responders were subjected to rescue IA, however, without success. Because of a high graft loss rate in the control group the study was terminated after a first interim analysis. Even though limited by small patient numbers, this trial suggests efficiency of IA in reversing severe AMR. 相似文献
19.
BACKGROUND: We have successfully performed heart transplantation despite the most unfavourable risk factors for graft and patient survival: the presence of a high level of antibodies (Abs) against the donor's human leukocyte antigens (HLA) class I/II and blood group A1 antigens. The present study concerns post-transplant follow-up and characterization of donor reactive antibodies (DRA). METHODS: Pre-transplant treatment consisted of mycophenolate mofetil (MMF), prednisolone, tacrolimus, intravenous immunoglobulin (IVIG), rituximab, protein-A immunoadsorption (PAIA) and per-operative plasma exchange. A standard triple-drug immunosuppressive protocol was used post-operatively. Abs were analyzed by the complement dependent cytotoxicity (CDC) test against donor and panel B/T cells and by flow cytometry (FlowPRA tests detecting isolated HLA class I/II antigens). Abs against the donor's erythrocytes were analyzed using a standard direct agglutination test for immunoglobulin M (IgM) Abs and a Bio-Rad AHG gel card test detecting IgG Abs and C3d. RESULTS: Pre-transplant treatment reduced Ab titers against the donor's lymphocytes from 128 to 16 and against the donor's blood group A1 antigen from 256 to 0. The patient was emergently transplanted with a heart from a blood group incompatible donor (A1 secretor to O). No hyperacute rejection was seen. DRA were present against all mismatched HLA class I and class II antigens at the time of transplantation; two of these DRA Abs disappeared within the first year post-transplant (anti-B62 and anti-DR4), one showed weakened reactivity (anti-A24) and one is still strongly reactive (anti-DQ3). The donor-specific CDC cross-match is still positive (titers 2 to 8). The level of panel reactive antibodies (PRA) remained unchanged from 6 months on post-transplant. Rising anti-A1 blood group Abs preceded the second rejection and were adsorbed by two blood group specific immunoadsorptions (Glycosorb)-ABO) and remained at a low level. IgM anti-A1 blood group Abs disappeared at 1 yr post-transplant and IgG Abs are still reactive with blood group A1 erythrocytes but at low titers (1 to 2). CONCLUSIONS: The patient is clinically well 2 years after heart transplantation despite the constant persistence of donor reactive IgG Abs against blood group A1 and HLA-DQ antigens. The reactivity of DRA against other mismatched HLA antigens disappeared or weakened during the follow-up period. 相似文献
20.
Ejaculates from 51 infertile men with significant levels of anti-sperm antibodies were submitted to processing in vitro in order to increase the number of antibody-free spermatozoa. Rapid removal and washing of spermatozoa from antibody-containing seminal fluid resulted in a variable decrease in IgG and/or IgA binding; only IgG binding was significantly reduced. Those spermatozoa were allowed to swim-up into an overlaying medium to select those with the best progression. Unexpectedly, in the post-migration samples (PM), the proportion of progressively motile spermatozoa coated with IgG and IgA antibodies increased significantly. An efficient selection of antibody-free spermatozoa was achieved prior to swim up migration by immuno-binding to polystyrene Petri plates coated with anti-human immunoglobulin antibodies. Non-adherent populations were depleted of 27-100% of IgG and IgA antibody-coated spermatozoa. After migration, the percentages of antibody-coated spermatozoa of those populations (PMP) remained low. The comparison between PM and PMP populations shows that immunobinding increases the number of motile antibody-free spermatozoa. The fertility potential of both sperm populations is currently under investigation. 相似文献