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  • 1
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Chemokines and their receptors are important in cell migration during inflammation, in the establishment of functional lymphoid microenvironments, and in organogenesis. The chemokine receptor CXCR4 is broadly expressed in cells of both the immune and the central nervous systems, and can mediate ...
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2307
    Keywords: Endoplasmic reticulum ; Sarcoplasmic reticulum ; Calcium ATPase ; Bone and soft tissue tumours ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Ninety-one cases of human bone and soft tissue tumours were studied for calcium pump expression by strepto-avidin-biotin immunohistochemical staining with a monoclonal antibody against sarcoplasmic reticulum calcium-ATPase (mAb6F5). Two out of 5 cases of embryonal rhabdomyosarcoma, 1 out of 5 cases of biphasic synovial sarcoma, 4 of 4 cases of chordoma and all of 3 chondrosarcoma cases were positive for mAb6F5. Although this novel monoclonal antibody can be used as a marker of myogenic tumours, the present positive result for endoplasmic reticulum calcium-ATPase (calcium pump) in other tumours including chordoma, chondrosarcoma and synovial sarcoma indicates a wider immunoreactivity. The findings further suggest that intracellular calcium may play an important role in cell proliferation and/or differentiation.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2307
    Keywords: Calcium ; Adenosine triphosphatase ; Novel monoclonal antibody ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Novel monoclonal antibodies were raised against sarcoplasmic reticulum calcium (Ca2+)-ATPase of human skeletal muscle. Immunohistochemical analysis demonstrated that these antibodies, designated 6F5 and 7F10, bind Ca2+-ATPase of non-muscle tissue of the adult including parathyroid, islets of Langerhans, anterior lobe of the pituitary gland and photoreceptor cells of the retina as well as skeletal muscle. A positive reaction was also found for fetal tissues including skeletal muscle, heart, chondrocytes and peripheral nerves. Our results for distribution suggest that Ca2+-ATPase is strongly expressed in the tissues and cells in which signal transduction is actively carried out by Ca2+ release from the cytoplasmic Ca2+ pool.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-2307
    Keywords: Gastric carcinoma Beta-catenin Nuclear accumulation Mutational analysis Invasive front
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Mutation of the adenomatous polyposis coli gene, which is known to be an early event in the carcinogenesis of intestinal-type gastric carcinoma, leads to accumulation of beta-catenin. In addition, beta-catenin has been found to activate down stream signaling molecules in the wingless/Wnt pathway. In this study, the clinical significance of nuclear accumulation of beta-catenin was evaluated in gastric carcinoma. Immunohistochemical staining showed nuclear localization in 16 (12%) of 139 (94 intestinal-type and 45 diffuse-type) gastric carcinomas, and all 16 lesions with nuclear staining were intestinal-type adenocarcinomas. Of the 16 cases, 15 were in the early clinical stage. In the remaining case, the lesion had invaded the subserosal layer and showed strong nuclear staining at the invasive front. In 14 of the 16 cases with nuclear localization, there were no abnormal mobility shifts detected using polymerase chain reaction-single strand conformational polymorphism analysis. This was confirmed using direct sequencing analysis, which revealed the wild-type sequence in the 12 cases tested. Nuclear accumulation of beta-catenin did not correlate with lymph node metastasis or 5-year survival. These findings suggest that high intranuclear levels of beta-catenin protein play an important role in early tumor growth and may function in initiation of invasive processes in intestinal-type gastric carcinoma.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1438-8359
    Keywords: Carbazochrome sodium sulfonate ; Tranexamic acid ; Thromboelastography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Although a number of hemostatic drugs are currently used during surgery to reduce hemorrhage, their effects on bleeding are still controversial. Furthermore, few studies have been made on their prophylactic effects. The purpose of this study was to clarify the effects of hemostatic drugs on bleeding. Thirty adult patients undergoing upper abdominal surgery were randomly assigned to receive carbazochrome sodium sulfonate and tranexamic acid immediately after induction of anesthesia (group H,n=15) or no hemostatic drugs (group C,n=15). Common coagulation-tests [prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen (FIB)], thromboelastography [reaction time (R), coagulation time (K), maximum amplitude (MA), clot formation rate (α)], and determination of bleeding time were conducted before induction of anesthesia and just before the completion of surgery. PT, R, and K decreased significantly in both groups, while MA and α increased and FIB decreased significantly in group C. No significant difference in blood loss was observed between the groups. Our findings, therefore, suggest that these two hemostatic drugs do not have prophylactic effects on intraoperative bleeding. Further studies are, however, necessary before applying these results to all surgical patients.
    Type of Medium: Electronic Resource
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