{"title":"Progenitor cell cytapheresis using a discontinuous-flow blood cell separator for the management of a pregnant patient with Chronic Myelogenous Leukemia","authors":"V. Hermosa, J.M. Pastor, E. Conde, A. Zubizarreta","doi":"10.1016/0278-6222(88)90018-6","DOIUrl":"10.1016/0278-6222(88)90018-6","url":null,"abstract":"<div><p>Cytapheresis of progenitor cells and immature granulocytes was employed in the initial management of a pregnant patient with Chronic Myelogenous Leukemia (CML). A semicontinuousflow blood cell separator was used; no sedimenting agents were applied. Over a period of 16 weeks the patient underwent 15 therapeutic Cytapheresis. Mean efficiency for CFU-GM was 72% and for mature granulocytes 8%. Hb loss per session was equivalent to 80 mL of whole blood and transfusion was unnecessary.</p><p>The decrease in the peripheral blood leucocytes was linear and overall leucocyte reduction was 89%. Our results suggest that preferential elimination of granulopoietic stem cells is an alternative strategy to intensive leucapheresis in the management of pregnant patients with CML; utility in other situations must be evaluated.</p></div>","PeriodicalId":101030,"journal":{"name":"Plasma Therapy and Transfusion Technology","volume":"9 4","pages":"Pages 369-375"},"PeriodicalIF":0.0,"publicationDate":"1988-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0278-6222(88)90018-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82802662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Transplantation of hemapheresis-derived hemopoietic stem cells: A new concept in the treatment of patients with malignant lymphohemopoietic disorders","authors":"Martin Körbling, Hans Martin","doi":"10.1016/0278-6222(88)90044-7","DOIUrl":"10.1016/0278-6222(88)90044-7","url":null,"abstract":"","PeriodicalId":101030,"journal":{"name":"Plasma Therapy and Transfusion Technology","volume":"9 1","pages":"Pages 119-132"},"PeriodicalIF":0.0,"publicationDate":"1988-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0278-6222(88)90044-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88798636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Platelet yield varies but in vitro function is maintained after leukocyte removal using terumo imugard™ filter and cutter Leukotrap™","authors":"A. Gerber, U.E. Nydegger","doi":"10.1016/S0278-6222(87)80051-7","DOIUrl":"10.1016/S0278-6222(87)80051-7","url":null,"abstract":"<div><p>In order to investigate whether current leukocyte-removing techniques have an influence on functional performance of platelets in vitro, we carried out white blood cell (WBC) removal procedures on 24 clinically prescribed platelet concentrates, 12 of them with Imugard IG-500™ cotton wool filter and 12 with centrifugation in the Leukotrap™ bag. Samples were obtained from the platelet concentrates before and subsequent to leukocyte removal and, after assessment of the platelet yield rate, tested by means of <sup>14</sup>C-serotonin-uptake and aggregation response towards collagen and adrenaline. Neither test system indicated significant loss of platelet function regardless of the leukocyte-removing technique used. Mean platelet yield rate in the IG-500™ group was 86% (SD ± 8.4) compared with 77% (SD ± 6.1) in the group processed with Leukotrap™ (<em>P</em> < 0.01).</p></div>","PeriodicalId":101030,"journal":{"name":"Plasma Therapy and Transfusion Technology","volume":"8 4","pages":"Pages 396-403"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0278-6222(87)80051-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85098098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jeane P. Hester MD , Gerard J. Ventura MD , Terry Boucher MSEE
{"title":"Platelet concentrate collection in a dual-stage channel using computer-generated algorithms for collection and prediction of yield","authors":"Jeane P. Hester MD , Gerard J. Ventura MD , Terry Boucher MSEE","doi":"10.1016/S0278-6222(87)80048-7","DOIUrl":"10.1016/S0278-6222(87)80048-7","url":null,"abstract":"<div><p>The automated collection of single-donor platelet concentrates is described for a dual-stage channel mounted in a continuous-flow cell separation system (Spectra). Research objectives included collection of a predicted yield of leukocyte-and erythrocyte-poor platelet concentrates using computer-controlled flow rates of anticoagulated whole blood and its separated components (packed erythrocytes, platelet-poor plasma, and platelet concentrates). To achieve these objectives, mathematic algorithms were generated that integrated the known major biologic and procedural contributions to platelet harvesting with the design characteristics of the channel in which blood was to be processed. Data to compute these algorithms are entered into the computer prior to the collection procedure.</p><p>It was perceived that the ability to predict platelet yield would provide a tool for collecting specific cell quantities for transfusion for a given recipient. A theoretical immunologic benefit to patients receiving lymphocyte-poor platelet concentrates is postulated but remains to be established. An additional objective was that of flexibility so that the predicted yield could be collected based on either volume requirements (for pediatric patients or patients with volume restrictions) or platelet concentration requirements (for storage). The following data summarize the results of some 100 research procedures conducted with this system.</p></div>","PeriodicalId":101030,"journal":{"name":"Plasma Therapy and Transfusion Technology","volume":"8 4","pages":"Pages 377-385"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0278-6222(87)80048-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91472976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Zingsem, W. Siegert, H.G. Heuft, C. Frenzel, E. Baumgarten, G. Henze, D. Huhn, R. Eckstein
{"title":"A new technique for peripheral stem cell separation","authors":"J. Zingsem, W. Siegert, H.G. Heuft, C. Frenzel, E. Baumgarten, G. Henze, D. Huhn, R. Eckstein","doi":"10.1016/S0278-6222(87)80045-1","DOIUrl":"10.1016/S0278-6222(87)80045-1","url":null,"abstract":"<div><p>Using a Haemonetics V50.1 cell separator we compared the new lymphocyte-surge-program for peripheral stem cell preparation with the conventional combined buffy coat and Ficoll techniques. Eleven surge and four conventional separations were performed in 15 healthy cytapheresis donors who gave informed consent to the procedure. Using the conventional methods, mean recovery of peripheral blood mononuclear cells (PBM) was 55% in a preparation time of 80 minutes for the buffy coat and 25 minutes for the Ficoll step. Eighty percent of the PBM loss occurred during the buffy coat step, and 20% during the Ficoll procedure. In a preparation time of 105 minutes, 2500 mL peripheral blood could be processed without flow or citrate problems. The donors' red cell losses were about 100 mL packed red cells. Granulocyte depletion was about 98%, red cell depletion higher than 99% (hematocrit < 0.1%). Using the surge technique we achieved a PBM recovery of 60% (range 45% to 72%) by processing 2100 mL peripheral blood in a preparation time of only 75 minutes. The donors' red cell losses were about 8 mL of packed red cells, significantly lower (P < 0.01) compared to conventional techniques. Nevertheless, red cell contamination of the concentrates remained high (hematocrit = 1.8%). Colony-forming unit (CFU) tests showed comparable quantities of peripheral stem cells (90 colonies/10<sup>7</sup> PBM) in both separation techniques. Therefore, both techniques seem to be adequate for T-cell depletion and preparation of bone marrow for cryopreservation. Since preparing bone marrow for purging techniques requires extreme stem cell purity, the surge technique may be less suitable for those purposes due to the awkward problem of considerably higher red cell contamination, despite a shorter preparation time.</p></div>","PeriodicalId":101030,"journal":{"name":"Plasma Therapy and Transfusion Technology","volume":"8 4","pages":"Pages 363-367"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0278-6222(87)80045-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85876091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Tichelli, A. Gratwohl, C. Nissen, A. Lori, A. Würsch, R. Wenger, B. Osterwalder, H.P. Burri, B. Speck
{"title":"ABO-incompatible bone marrow transplantation: Three methods for the removal of red blood cell antibodies","authors":"A. Tichelli, A. Gratwohl, C. Nissen, A. Lori, A. Würsch, R. Wenger, B. Osterwalder, H.P. Burri, B. Speck","doi":"10.1016/S0278-6222(87)80043-8","DOIUrl":"10.1016/S0278-6222(87)80043-8","url":null,"abstract":"<div><p>We analyzed three different methods for removing red blood cell (RBC) antibodies in 28 patients before a major ABO-incompatible bone marrow transplantation (BMT). Six patients were treated with extensive plasma exchange. Antibody titers were lowered from 1:512 to 1:4 (median values). In ten patients antibodies were removed by extracorporeal immunoadsorption using an adsorbent column. Titers decreased from 1:128 to 1:32. In four of these ten patients plasma exchange was added to complete antibody removal. Twelve patients were treated with simple in vivo adsorption with donor-type RBCs before marrow infusion. In eight of them, titers became undetectable. Advantages and disadvantages of the three methods are discussed.</p></div>","PeriodicalId":101030,"journal":{"name":"Plasma Therapy and Transfusion Technology","volume":"8 4","pages":"Pages 355-359"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0278-6222(87)80043-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90428866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jennifer K.M. Duguid MB, ChB, MRC Path, P.L. Hughes BSc
{"title":"An evaluation of automated platelet-rich plasma collection","authors":"Jennifer K.M. Duguid MB, ChB, MRC Path, P.L. Hughes BSc","doi":"10.1016/S0278-6222(87)80049-9","DOIUrl":"10.1016/S0278-6222(87)80049-9","url":null,"abstract":"<div><p>Automated collection of plasma from blood donors is widely practiced. Its value can be extended by collecting platelet-rich plasma, thereby providing platelet concentrates and source plasma. The platelet concentrates so collected are equivalent to two to three single platelet concentrates. The use of acid citrate dextrose formula B (ACD-B) as the anti-coagulant during these collections is associated with good in vitro platelet viability, maintained during extended storage, and excellent Factor VIII recovery in the fractionated plasma. A small pool of committed donors and a limited number of automated cell separators used to collect PRP can contribute a significant number of platelet concentrates and source plasma.</p></div>","PeriodicalId":101030,"journal":{"name":"Plasma Therapy and Transfusion Technology","volume":"8 4","pages":"Pages 386-390"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0278-6222(87)80049-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87731637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Güsken , R. Kotitschke , A. Gaczkowski , J. Kadar , H. Borberg
{"title":"Serum preserve as a replacement fluid for plasma exchange therapy","authors":"G. Güsken , R. Kotitschke , A. Gaczkowski , J. Kadar , H. Borberg","doi":"10.1016/S0278-6222(87)80040-2","DOIUrl":"10.1016/S0278-6222(87)80040-2","url":null,"abstract":"<div><p>A considerable number of exchange fluids have been used for plasma exchange therapy. As they all have drawbacks, either 5% albumin and plasma protein fraction (PPF) or, less frequently, fresh frozen plasma (FFP) are generally used. Under critical conditions, appropriate mixtures of fluids specific for the patient, his disease, and his current condition, may be applied.</p><p>Albumin or PPF are generally well tolerated; however, the lack of coagulation factors and immunoglobulins may limit their application. In contrast, FFP replaces virtually all plasma proteins, but is characterized by essential drawbacks, e.g., colerability, ability to transfer virus-mediated diseases, and sometimes, limited availability.</p><p>Serum preserve may be an alternative for FFP, as it replaces all plasma proteins except for some coagulation factors, is a standardized product, is virus free, and is easily available commercially. As we used serum preserve occasionally as eplacement fluid and found that it was vell tolerated, we became interested in inrestigating it on a more systematic basis. We compared 5% albumin, 5% serum preserve, and 7.5% serum preserve as replacement fluids after extended plasma donations in the same subjects.</p></div>","PeriodicalId":101030,"journal":{"name":"Plasma Therapy and Transfusion Technology","volume":"8 4","pages":"Pages 333-341"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0278-6222(87)80040-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84262249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}