Abstract:
:The effect of heparin on platelet aggregation was systematically examined on platelets in plasma (PRP), as well as on gel-filtered, washed, and formaldehyde-fixed platelets. Results indicate that, although heparin causes a mild potentiation of platelet aggregation in the PRP systems, a significant inhibitory activity is observed when heparin is added to isolated platelets. This inhibitory activity appears to be specific and not related to the impurities in the heparin preparations, as heparinase, as well as protamine, effectively neutralizes the heparin-mediated inhibitory activity on platelet aggregation. Although heparin-mediated inhibitory activity can be demonstrated in the presence of a number of different agonists (ADP, arachidonic acid, thrombin, Ionophore A23187, epinephrine, and ristocetin), the most pronounced inhibition is seen in the presence of ristocetin. Further studies show that heparin enhances thromboxane generation in isolated platelets. Platelets pretreated with heparin, however, fail to respond to preformed thromboxane. These findings suggest that, in addition to the potentiation of thromboxane production in platelets, heparin may also attribute some change(s) to the platelet(s)/platelet membrane, which interferes with their ability to respond to the agonists of platelet aggregation. This antiaggregatory activity of heparin was found to be inhibited by a factor(s) present in plasma but not in serum.
journal_name
Am J Hematoljournal_title
American journal of hematologyauthors
Saba HI,Saba SR,Morelli GAdoi
10.1002/ajh.2830170310subject
Has Abstractpub_date
1984-10-01 00:00:00pages
295-306issue
3eissn
0361-8609issn
1096-8652journal_volume
17pub_type
杂志文章abstract::all-trans-Retinoic acid (ATRA) induces complete remission in majority of patients with acute promyelocytic leukemia (APL). However, accelerated metabolism of ATRA that is induced by chronic daily administration of oral ATRA has been implicated as one of the mechanisms leading to a reduced sensitivity or resistance to ...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.10099
更新日期:2002-05-01 00:00:00
abstract::The lupus anticoagulant may be accompanied by an acquired factor II deficiency and bleeding. We report on a patient with a lupus anticoagulant and factor II (Fll) deficiency responsive to Danazol. Acquired hypoprothrombinemia (FII) with the lupus anticoagulant (LA) may be accompanied by a hemorrhagic diathesis. A 64-y...
journal_title:American journal of hematology
pub_type: 杂志文章
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更新日期:1996-12-01 00:00:00
abstract::Thromboembolic complications following splenectomy for hematologic diseases occur in up to 10% of patients and may range from portal vein thrombosis (PVT) to pulmonary embolism (PE) and deep vein thrombosis (DVT). Up to now there exist no recommendations for the duration and intensity of prophylactic anticoagulation, ...
journal_title:American journal of hematology
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abstract::Neutrophils that bear receptors for the Fc portion of immunoglobulin G have been demonstrated to be more active in assays of adherence, aggregation, and chemotaxis compared to Fc receptor-negative cells. We examined the relationship of neutrophil Fc receptor activity and cell-cell adherence or aggregation induced by p...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830260303
更新日期:1987-11-01 00:00:00
abstract::Chronic transfusion therapy is the treatment of choice for preventing stroke recurrence in children with sickle cell disease (SCD). The majority of children affected by this devastating complication live in the developing world where access to regular blood transfusions may be impractical. Since 2000, in the absence o...
journal_title:American journal of hematology
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journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830150104
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journal_title:American journal of hematology
pub_type: 杂志文章,评审
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更新日期:2021-01-01 00:00:00
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journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.20987
更新日期:2007-12-01 00:00:00
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journal_title:American journal of hematology
pub_type: 杂志文章,评审
doi:10.1002/ajh.2830500307
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journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830280317
更新日期:1988-07-01 00:00:00
abstract::We report the long-term follow-up results of a phase II trial of thalidomide for early-stage multiple myeloma (MM). Patients were eligible if they had smoldering multiple myeloma (SMM) or indolent MM without the need for immediate therapy. Thalidomide was initiated at a dose of 200 mg/day and adjusted as tolerated. Di...
journal_title:American journal of hematology
pub_type: 临床试验,杂志文章
doi:10.1002/ajh.21821
更新日期:2010-10-01 00:00:00
abstract::Epstein-Barr virus (EBV) occasionally infects T and NK cells and causes EBV-infected T/NK-cell lymphoproliferative disease (LPD), which comprises chronic active EBV infection, EBV-associated hemophagocytic syndrome, mosquito allergy, hydroa vacciniforme, aggressive NK-cell leukemia, and NK/T-cell lymphoma. The diagnos...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.20659
更新日期:2006-08-01 00:00:00
abstract::Thrombotic thrombocytopenic purpura (TTP) is a microangiopathy syndrome caused by a congenital or acquired deficiency of ADAMTS13, a plasma metalloprotease that cleaves von Willebrand factor (VWF) and thus prevents the formation of platelet-rich thrombi in the microcirculation. TTP can be fatal if not appropriately an...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.23527
更新日期:2013-10-01 00:00:00
abstract::The recent progress in sensitive KIT D816V mutation analysis suggests that mutation analysis of peripheral blood (PB) represents a promising diagnostic test in mastocytosis. However, there is a need for systematic assessment of the analytical sensitivity and specificity of the approach in order to establish its value ...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.23672
更新日期:2014-05-01 00:00:00
abstract::A 10-month-old infant with chronic myelomonocytic leukemia (CMML) of 5 months' duration, who had been treated only with transfusion, displayed leukemic transformation characterized by lymphoid morphology, PAS positivity, and myeloperoxidase negativity. Surface marker analysis of blast cells revealed expression of lymp...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8652(199607)52:3<212::AID-AJH14
更新日期:1996-07-01 00:00:00
abstract::Imatinib is currently the standard treatment for chronic myeloid leukemia(CML). Previous studies have shown that imatinib affects bone metabolism in CML patients. However, these effects are not well-studied prospectively. The authors studied bone-mineral density (BMD) and bone metabolism in 17 CML patients and matched...
journal_title:American journal of hematology
pub_type: 临床试验,杂志文章
doi:10.1002/ajh.23155
更新日期:2012-05-01 00:00:00
abstract::Imatinib mesylate radically changed the natural history of chronic myeloid leukemia (CML). The recent availability of alternative tyrosine kinase inhibitors (TKIs) renders the clinical management of CML more complex. In this article, we summarize our long-term single institution experience. From 2003 to 2012, 102 pati...
journal_title:American journal of hematology
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2014-10-01 00:00:00
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journal_title:American journal of hematology
pub_type: 杂志文章
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更新日期:2015-06-01 00:00:00
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journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830170113
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journal_title:American journal of hematology
pub_type: 杂志文章
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更新日期:1989-01-01 00:00:00
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journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/(sici)1096-8652(199910)62:2<74::aid-ajh2>3
更新日期:1999-10-01 00:00:00
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journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830090303
更新日期:1980-01-01 00:00:00
abstract::Community practice experience allows a nonselective care of patient using information derived from a more controlled clinical trial environment. We present our community experience with multiple myeloma patients with advanced age, long disease duration since diagnosis, advanced stage, multiple prior therapies includin...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.20883
更新日期:2007-07-01 00:00:00
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journal_title:American journal of hematology
pub_type: 杂志文章
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更新日期:2000-03-01 00:00:00
abstract::Multiple myeloma (MM) and primary systemic light chain amyloidosis (AL) are both chronic plasma cell dyscrasias with different clinical expression but limited treatment options for relapsed refractory disease. We report the effect of the addition of clarithromycin on 31 MM and 17 AL with relapsed or refractory disease...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.24596
更新日期:2017-02-01 00:00:00
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journal_title:American journal of hematology
pub_type: 临床试验,杂志文章
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更新日期:2013-02-01 00:00:00
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pub_type: 信件,多中心研究
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journal_title:American journal of hematology
pub_type: 杂志文章
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更新日期:1988-01-01 00:00:00
abstract::Binding of chemoattractant to polymorphonuclear leukocytes (PMNL) triggers a series of events like polymerization of actin and tubulin, orientation of cells, chemotaxis, increase in fluid pinocytosis and phagocytosis, and stimulation of microbicidal pathways which includes lysosomal degranulation and generation of rea...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8652(199607)52:3<155::AID-AJH4>
更新日期:1996-07-01 00:00:00
abstract::Lysosomes (granules) of rabbit PMN leukocytes were extracted with either HCl or H2SO4, and the extracts were chromatographed over Sephadex to separate protein constituents. Some of the low molecular weight cationic proteins homogeneous on SDS PAGE (8% and 12.5% gels) were characterized by electrophoretic mobility in a...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830070309
更新日期:1979-01-01 00:00:00