ABSTRACT
Objective To evaluate the quality of pooled platelets leukocytes reduced after filtering out leukocytes using two man-ufacturers of leucocyte filters for pooled platelets and improving the preparation method.Methods Pooled platelets was prepared from 400 mL fresh whole blood by buffy coats(BC)method,after 1 6 h,(22±2)℃ holding period,pooled six bags of ABO-matched buffy coats.and then filtered with two manufacturers of leucocyte filter,divided into the control group and the experimental group. Before and after filtering,the numbers of platelet and leukocyte,pH,hypotonic shock response(HSR),platelet aggregation and CD62p expression were detected.Results Before filtering leukocytes,the platelet quality of two groups achieved the requirements of Chinese standards.The numbers of platelet and leukocyte,pH,CD62p expression(%)and platelet aggregation showed no signifi-cant difference between two groups(P >0.05).However,After filtering,the pH,platelet aggregation and the platelet recovery,the experimental group and the control group,were (6.53±0.60)vs(7.00±0.06)、(5.5±3.8)% vs (77.4±14.7)%,(86.8±4.3)%vs (90.6±2.7)%,showed significant differences (P 0.05).Conclusion The quality of pooled platelets leukocytes is reduced,after filte-ring out leukocytes with two manufacturers of leucocyte filters and improving the preparation method,achieves the requirements of Chinese standards.However,the leukocyte filters of experimental group might have influence on platelet aggregation and pH.
ABSTRACT
Objective To analyze efficacy of rituximab combined with chemotherapy for 35 patients with aggressive B cell non-Hodgkin’s lymphoma.Methods 70 patients with aggressive B cell non-Hodgkin’s lymphoma were chosen from Hematology Department of First Affiliated Hospital of Liaoning Medical University and divided into observation group and control group at random, each group with 35 cases.The control group were treated with CHOP chemotherapy, and the observation group were treated with anti-CD20 monoclonal antibody rituximab combined with CHOP chemotherapy. The efficacy and toxicity of two group were compared.Results The total effective rate of observation group was significantly higher than that of control group (80.0%vs.37.1%;χ2 =13.246,P<0.001).Fever cases of observation group were significantly more than those of control group (15vs.4;χ2 =8.741,P=0.003), while the other adverse reactions of leucopenia and gastrointestinal reaction between two groups were not significantly different. Conclusion For patients with aggressive B cell non-Hodgkin’s lymphoma, rituximab combined with CHOP chemotherapy has better short-term effects and its adverse reactions are tolerable, which helps patients to improve the quality of life.
ABSTRACT
Objective To investigate the consistency of the results detected by different types of blood cell analyzer in the blood center .Methods On the basis of the calibration in each analyzer ,with the analyzer obtaining the excellent result in participating the external laboratory quality assessment hosted by the Ministry of Health as the reference ,the fresh blood samples were adopted to analyze other analyzers .Results For the analyzers after conducting the comparison ,the consistency and accuracy of the detection results were ensured .Conclusion After calibration in different types of blood cell analyzer ,the differences exist in the detection re‐sults .Periodically conducting the comparison among different types of instrument has very practical significance .
ABSTRACT
Hemopoietic stem cells are mostly obtained from bone marrow,umbilical cord blood and peripheral blood.Physical status of final-stage liver disease patients is poor,and these patients hardly endures large wound.Thus,it is a potential method to harvest hepatocytes following transdifferentiation using peripheral blood stem cell transplantation.It is necessary to mobilize peripheral blood when enough stem cells are needed during peripheral blood stem call transplantation.Stem cell mobilization agent contains 3 types at present:chemotherapeutic drugs,polyanion preparation such as dextran sulphate,various recombinant human hematopoietic cell stimulating factors.For patients with severe liver disease,it is safe to use various recombinant human hematopoietic cell stimulating factors.Density gradient centrifugation is widely used to isolate hematopoietic stem cells.This method can obtain leukocytic cream that is rich of mononuclear cells,and primarily enrich CD34~+ cells.With the discovery of CD34~+ different antigenic determinant monoclonal antibody,immunological technique of exactly,abundantly,rapidly,positively sorting CD34~+ cells is developed quickly,such as solid phase sorting method and flow cytometry sorting.Utilizing the high reproductive activity and multi-directional differentiation,hematopoietic stem cells are amplified in vitro and induced to differentiate into abundantly hemopoietic progenitor cells in a short period,and into directional amplification of various cells such as hepatocytas for transplantation.Presently,bone marrow hematopeietic stem cells can successfully differentiate into hepatocytas.To judge whether differentiated cells were from infused stem cells in transplanted organs,the infused cells were commonly labeled before transplantation.Labeling method includes fluorescent labeling,specific staining,genetic mark and chromosome identification.Subsequently,this was identified using immunological,molecular biological,and fluorescence chemical techniques.Presently,hematopoietic stem cell transplantation in treatment of liver disease is mostly basic experiment,but has not been applied in clinic.
ABSTRACT
This paper is a repott on the mechanism of Os trigonum injury of 28 feet. The relationship betweenthe anatomy and pathogenesis is also analyzed with details on pathological lesion. Attention should be paid to the examination of Os trigonum after supination injury of ankle. i. e.whether there is pain during plautat flexion: tenderness over the region belind the talus; limitation ofplantar flexion. The Os trigonum is of 2 types in X-ray film according to it's shape: round and triangle.The round Os trigonum should be distinguished from loose body. If conservative treatment is not effective, an operative method to remove Os trigonum is recommended.The result is excellent: the patient is able to resume training 2--3 months after operation.