نتایج جستجو برای: platelet disorder
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Introduction: Alzheimer disease (AD) is a neurodegenerative disorder characterized by the progressive loss of memory and other cognitive functions. Protein kinase Cε (PKCε) is an isoform that most effectively suppresses amyloid beta (Aβ) production and synaptic loss. Methods: In this study, spatial learning and memory for treated rats were evaluated by the Morris water maze test. The activity ...
Multimerin is a massive soluble, multimeric protein found in platelets and endothelial cells. Recent studies identified multimerin as a specific coagulation factor V binding protein, complexed with platelet, but not plasma, factor V. These findings led us to investigate individuals with inherited factor V deficiencies for possible multimerin abnormalities. Platelet proteins were evaluated using...
background: platelets rapidly lose their qualities usually after 5 day of storage. different standard methods have been recommended to check the quality of platelets during storage which some of them show better correlation with other quality markers during storage. the purpose of this study was to demonstrate if platelet factor 3 (pf3) assay could be an indicator of storage lesion and provide ...
Wiscott-Aldrich syndrome (WAS) is an x-linked immune-deficiency disorder associated with eczema, recurrent infections, and increased frequency of autoimmune diseases, malignancy and thrombocytopenia with small size platelet. Our case is an 11 year old from a non- related parent, who was admitted with abdominal pain (hematoma), lower extremities bleeding (ecchymosed) and vomiting. Also, he had...
Platelets are anuclear cells that are essential for blood clotting. They are produced by large polyploid precursor cells called megakaryocytes. Previous genome-wide association studies in nearly 70,000 individuals indicated that single nucleotide variants (SNVs) in the gene encoding the actin cytoskeletal regulator tropomyosin 4 (TPM4) exert an effect on the count and volume of platelets. Plate...
To determine the pathogenetic mechanism of a hereditary primary platelet release disorder, arachidonic acid metabolism via the cyclooxygenase pathway was investigated. The propositus' platelets exhibited defective release reaction and second-wave aggregation when stimulated by sodium arachidonate or U46619, a thromboxane A2 (TXA2) agonist. The lack of platelet response to U46619 suggested that ...
Cyclic thrombocytopenia is a rare disorder characterized by periodic decreases and increases in platelet levels. Recent data suggest these fluctuations result from periodic failure of effective platelet production or periodic immune-mediated platelet destruction.’.’ However, the pathogenesis of this disorder is uncertain. We developed an enzyme-linked immunosorbent assay (ELISA) of serum thromb...
blood transfusion centers are under considerable pressure to produce platelet concentrates with a shelf life limit of 3 to 5 days. many approaches have been investigated experimentally to produce new hemostatically active platelet products that are capable of long term storage. in this article infusible platelet membrane will be explained as a platelet substitute versus conventional liquid-stor...
Introduction: Type 2 diabetes mellitus, due to its high incidence and mortality rates, is a major health problem around the world. Also, the type II diabetes is a type of metabolic disorder characterized by increased blood glucose, which is due to insulin resistance, insulin deficiency, or both. The current study aimed to assess the mean platelet volume (MPV) in type 2 diabetes patients compare...
The authors review the literature on the relationship of platelet monoamine oxidase (MAO) to affective disorders and alcoholism. Although some studies have reported an association between low platelet MAO and bipolar illness, others have failed to replicate this finding. Alcoholism has been related to affective disorders, and it is of note that three studies have found low MAO in alcoholics. Gi...
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