Abstract:
:Staphylococcal protein A efficiently binds immunoglobulins and circulating immune complexes (CIC) and provides an effective medium to remove immunoglobulins and CICs from plasma while sparing albumin and most coagulation proteins. Although it activates the complement system its clinical use abrogates the need for plasma expanders necessitated by plasma exchange. Despite anecdotal reports of utility in several hematologic syndromes, publications of clinical trials are available only for autoimmune thrombocytopenic purpura (AITP) and refractoriness to platelet transfusions (RFT) associated with alloimmunization. In the former situation Snyder et al. (Blood 79:2237-2245, 1992) reported on 72 patients with AITP all of whom had failed at least two previous therapies including splenectomy in 68%. Forty-six percent achieved improved platelet counts following treatment. The response was durable (8-26 mo) in all but 10%. Spleen-intact patients could not be differentiated from those who had been splenectomized. Both responders and nonresponders showed significant decreases in CIC and platelet-directed immunoglobulin (PDIG), but responders achieved near-normal levels. The beneficial response of these factors, particularly in spleen-intact patients, warrants a prospective study. In our studies at the University of Minnesota twelve patients with thrombocytopenia secondary to bone marrow failure who were refractory to platelet transfusion were treated with protein A immunoadsorption. Ten had demonstrable antiplatelet Abs (Anti-HLA, HPA, ABO). Seven of 12 demonstrated improved platelet counts and post-transfusion corrected count increments after treatment. This was associated with decreased platelet utilization and clinical bleeding. A prospective controlled clinical trial is justified.
journal_name
J Clin Apherjournal_title
Journal of clinical apheresisauthors
Howe RB,Christie DJdoi
10.1002/jca.2920090109subject
Has Abstractpub_date
1994-01-01 00:00:00pages
31-2issue
1eissn
0733-2459issn
1098-1101journal_volume
9pub_type
杂志文章,评审abstract::Two patients suffering from allergic bronchial asthma who showed no improvement despite six and four weeks, respectively, of drug therapy were successfully treated with therapeutic plasma exchange. The first patient had no attacks over a period of five months, and the other patient had none for over one year. Although...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.2920020210
更新日期:1984-01-01 00:00:00
abstract::Complement-derived anaphylatoxin may be one of the causes of vascular injury and an indicator of activity in systemic lupus erythematosus (SLE). The present study examines the effectiveness of dextran sulfate (DS) column immunoadsorption treatment to remove anaphylatoxins (C3a, C4a, and C5a) from the blood of patients...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/(sici)1098-1101(1998)13:3<108::aid-jca3>3.
更新日期:1998-01-01 00:00:00
abstract::Because the administration of hematopoietic growth factors and the use of stem cell support often fails to alleviate the neutropenic phase induced by cytotoxic drugs, several investigators have attempted to expand ex vivo hematopoietic progenitors for clinical use. These attempts have clearly shown that the cultured c...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.10012
更新日期:2002-01-01 00:00:00
abstract::Over the past 37 year the role of plasma exchange in the treatment of patients with renal disease has undergone several changes. The majority of the changes for the use of plasma exchange relied on randomized control trials and delineations of mechanisms that potentially would benefit from the use of plasma exchange. ...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章,评审
doi:10.1002/jca.21221
更新日期:2012-01-01 00:00:00
abstract::Excess free iodide in the blood (ingested or injected) may cause thyrotoxicosis in patients at risk. Iodinated contrast solutions contain small amounts of free iodide and may be of significance for patients affected by Graves' disease, multinodular goiter or living in areas of iodine deficiency. Herein, we report a 57...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.20161
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:Currently, low titer A plasma is used on a routine basis in bleeding trauma patients of unknown AB type. Three AB non-bleeding apheresis patients are presented here who safely received a combination of AB and low titer A plasma during therapeutic plasma exchange (TPE). One control AB patient received AB plas...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21656
更新日期:2019-02-01 00:00:00
abstract::The supply of deceased donor kidneys is inadequate to meet demand. To expand the pool of potential donors, ABO-incompatible transplants from living donors have been performed. We present the Mayo Clinic experience with such transplants. Enrollment was open to patients when the only available potential living kidney do...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.20002
更新日期:2004-01-01 00:00:00
abstract:BACKGROUND:Transfusion of D+ red blood cells (RBCs) to D- recipients can be accidental or necessary due to D- RBC shortage. Alloimmunization can complicate future transfusions; implications for women of childbearing age are compounded by possible hemolytic disease of the fetus and newborn. Rh immunoprophylaxis is effec...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.20225
更新日期:2010-01-01 00:00:00
abstract::Since the introduction of hematopoietic growth factors, the collection of mobilized stem cells via leukapheresis has widely replaced the harvest of bone marrow in both autologous and allogeneic transplantation settings. We investigated the frequency and the extent of anticoagulant-induced electrolyte changes and the c...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/1098-1101(2000)15:4<230::aid-jca3>3.0.co;2
更新日期:2000-01-01 00:00:00
abstract:INTRODUCTION:Algorithms have been developed to predict the platelet yield after apheresis from the donor's data, as well as the effect on the blood cell count, to extract an acceptable platelet number without affecting the donor. However, the evaluation of these algorithms has not been widely reported. This study aimed...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21846
更新日期:2020-10-05 00:00:00
abstract:BACKGROUND:Nephrogenic systemic fibrosis (NSF), also known as nephrogenic sclerosing dermopathy (NSD), is a rare progressive fibrosing disease associated with gadolinium based dyes in patients with renal disease. The exact pathophysiology is not well understood. Accepted treatments include corticosteroids, immune modul...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21253
更新日期:2013-08-01 00:00:00
abstract::The process of publishing original work in a peer review journal is not complete at the point where the manuscript is first submitted. The journal editors will submit the manuscript to peer review whereby outside experts are asked to vet the manuscript for scientific merit, originality and quality. Reviewers' comments...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章,评审
doi:10.1002/jca.21822
更新日期:2020-08-07 00:00:00
abstract::Mobilization regimens for CD34+ cells have generally been judged successful based on the number of cells collected without evaluating mobilization separately from collection. Using retrospective data for patients who collected CD34+ cells on Total Therapy protocols 3a/3b (VTD-PACE) and Total Therapy 4/5 using a novel ...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21313
更新日期:2014-10-01 00:00:00
abstract::Many apheresis units lack the resources to acquire customized computer software for record keeping. We have adapted a commercially available "spreadsheet" program (Lotus 1-2-3) to aid in quality control activities for plateletpheresis. Data are entered in a grid pattern wherein each donation occupies one row and succe...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.2920050407
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND:Therapeutic plasma exchange (TPE) may remove medications from the patient's plasma. Data is limited on the effect of TPE on unfractionated heparin (UFH). STUDY DESIGN AND METHODS:A retrospective review was performed of patients receiving TPE and continuous IV infusion UFH from 1/1/2008 to 6/30/2010. TPE wit...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21441
更新日期:2016-12-01 00:00:00
abstract::Extracorporeal photopheresis (ECP) in young pediatric patients has a risk for procedural hypotension and anemia due to extracorporeal fluid shifts. A standard mitigation policy in these patients is to prime the device with packed red blood cells (RBC) or whole blood. We now report multiple episodes of hemolysis while ...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21740
更新日期:2019-12-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Estimation of the total blood volume (TBV) is fundamental to the control of automated red cell exchange (RCE). Error in the TBV estimate can produce outcomes that deviate from the prescribed targets, and may endanger the patient. Both the Spectra Optia and the COBE Spectra use the Nadler formu...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21748
更新日期:2019-12-01 00:00:00
abstract::Bone marrow (BM) damage after previous chemotherapy, such as that involving alkylating agents, and radiation therapy alone cannot explain poor hematopoietic progenitor cell mobilization. We examined the T lymphocytes of BM in 67 autologous peripheral blood stem cell transplant (auto-PBSCT) patients with non-Hodgkin ly...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21817
更新日期:2020-07-28 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Specialized centers claim a need for blood component production independent from the general blood transfusion services. We performed a prospective change control analysis of the transfer of platelet (PLT) production for hematological patients at the University Hospital Basel from the Departme...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21214
更新日期:2012-01-01 00:00:00
abstract::Heparin-induced thrombocytopenia (HIT) can occur following exposure to heparin and is characterized by thrombocytopenia with increased risk for thrombosis. This condition is mediated by formation of immunoglobulin G antibodies against platelet factor 4/heparin complexes that can subsequently lead to platelet activatio...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21757
更新日期:2020-01-01 00:00:00
abstract::The aim of this study was to analyze the impact of various donor and machine parameters on PLT yield in 127 PLT apheresis procedures, to optimize PLT yield achieving clinical and economic advantages. One hundred and twenty-seven apheresis procedures were analyzed. Age, gender, volume processed, Hb, and PLT precounts w...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.20116
更新日期:2007-02-01 00:00:00
abstract::The Oklahoma TTP-HUS Registry provides a complete community perspective of thrombotic thrombocytopenic purpura (TTP). This is possible because plasma exchange is the essential treatment for TTP and the Oklahoma Blood Institute provides all plasma exchange procedures for a region encompassing most of the State, includi...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.20169
更新日期:2008-01-01 00:00:00
abstract::We sought to optimize direct intravenous infusion of calcium gluconate (CaGlu) for maintaining plasma ionized calcium concentration ([Ca2+ ]) and preventing hypocalcemic reactions during 34 consecutive 1-volume therapeutic plasma exchanges (TPEs) in eight patients. CaGlu, 2 g in 50 mL of 0.9% NaCl, was prepared by our...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21742
更新日期:2019-12-01 00:00:00
abstract::Blood component donations by apheresis have become more common in modern blood transfusion practices. We compared three apheresis instruments (Fenwal Amicus, Fresenius COM.TEC, and Trima Accel) with regard to platelet (PLT) yield, collection efficiency (CE), and collection rate (CR). The single-needle or double-needle...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章,随机对照试验
doi:10.1002/jca.21358
更新日期:2015-06-01 00:00:00
abstract::The combined use of immunoadsorption (IA) and membrane filtration (MF) may markedly enhance removal of IgM and complement component C1q, supporting its use as an element of recipient desensitization in antibody-incompatible transplantation. However, coagulation factor removal may contribute to altered hemostasis, posi...
journal_title:Journal of clinical apheresis
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/jca.21399
更新日期:2016-02-01 00:00:00
abstract:BACKGROUND:In organ transplantation, apheresis is frequently used for removal of anti-HLA antibodies. However, it is unclear whether plasmapheresis (PP) or semi-selective immunoadsorption (IA) should be employed, and the optimal number of apheresis sessions required to reach post-treatment objectives is also unknown. ...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/jca.21858
更新日期:2020-11-30 00:00:00
abstract::Either bone marrow or peripheral blood may be harvested to provide hematopoietic stem cells (HSC) for autologous transplantation. Both, however, comprise heterogeneous cell populations. The HSC necessary for successful engraftment constitute a very small fraction of the cells harvested. After collection, the harvested...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章,评审
doi:10.1002/jca.2920070307
更新日期:1992-01-01 00:00:00
abstract::The blood flow property is one of the factors determining blood perfusion and oxygen supply. The viscosity of the blood is primarily related to the hematocrit, but also to the amount of fibrinogen and other macromolecules present in the blood. Patients with ischemic heart disease have shown a rapid and safe improvemen...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/(sici)1098-1101(1997)12:4<183::aid-jca5>3.
更新日期:1997-01-01 00:00:00
abstract::Thrombopoietin (TPO) serum levels in 14 patients (9 male and 5 female, mean age 36 years, range 16 to 55 years) with breast cancer (n = 5), testicular cancer (n = 7), or lymphoma (n = 2), undergoing high dose chemotherapy with peripheral blood stem cell (PBSC) transplantation, were evaluated at the first day of the mo...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/(sici)1098-1101(1999)14:2<57::aid-jca2>3.0
更新日期:1999-01-01 00:00:00
abstract::Prestorage leukocyte reduction of platelet concentrates may reduce adverse effects of transfusion while affording better quality control. Platelets and leukocytes may undergo activation during storage, which could affect the performance of leukocyte reduction filters. The purpose of this study was to evaluate the effi...
journal_title:Journal of clinical apheresis
pub_type: 杂志文章
doi:10.1002/(sici)1098-1101(1997)12:1<14::aid-jca4>3.0
更新日期:1997-01-01 00:00:00