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【Objective】 To analyze the distribution of unexpected antibodies in tumor patients retrospectively and explore the clinical significance. 【Methods】 Unexpected antibody screening was performed on inpatients with blood preparation and blood transfusion in our hospital from January 2004 to December 2022, with 1 176 cases tested positive, and the types of unexpected antibodies and distribution characteristics were statistically analyzed. 【Results】 Unexpected antibodies were screened in 1 176 cases, with the positive rate at 1.05% (1 176/111 483). The unexpected antibodies were mainly anti-E 16.33%(192/1 176), anti-M 7.99% (94/1 176), anti-Mur 5.70% (67/1 176) and anti-Lea 4.76% (56/1 176). Among the 1 176 cases, gastrointestinal tumors accounted for 27.99% (329/1 176), gynecological tumors accounted for 24.84% (292/1 176), respiratory tumors accounted for 16.67% (196/1 176) . 【Conclusion】 The influencing factors of unexpected antibodies in tumor patients were disease type, blood transfusion history and blood type. Therefore, it is necessary for clinical departments to carry out unexpected antibody screening and perform Rh blood type matched transfusion for tumor patients to avoid alloantibody production.
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@# Objective To analyze epidemical features and time trend of acute myocardial infarction(AMI)deaths in China from 2002 to 2016. Methods AMI mortality data for Chinese residents from 2002 to 2016 were collected and the Joinpoint model was used to analyze the time trends in AMI mortality of various populations and different age groups. Results In the past 15 years, the age standardized mortality rate of AMI in China increased rapidly. In 2002-2007,AMI mortality of urban population were higher than that in the rural, and rural rates exceeding urban rates after 2007.The age standardized rates of AMI in urban males, urban females, rural males, and rural females increased from 2002 to 2016. The average annual percentage change(AAPC)was 5.6%, 6.1%, 9.4%, and 9.9%, respectively. The age-specific mortality rates increased rapidly among young middle-aged male and elder female. Conclusions The mortality rate of AMI increased from 2002 to 2016, among which the AMI mortality rate in rural residents was increasing rapidly. The death of AMI in urban and rural areas among young middle-aged male and elder female showed a significant growth trend.
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OBJECTIVE: To study the preparation technology of tamsulosion hydrochloride sustained-release capsules and investigate the release degree in vitro. METHODS: The pellets containing tamsulosin hydrochloride were prepeared in the fluid-bed using bottom gush medicine. Then, it was coated with ethylcellulose aqueous dispersion (surelease), and in the following procedures, water-based acrylic resin enteric system (Acryl-EZE®) was used as coating material, hydroxypropylmethylcellulose E6 (HPMCE6) was considered as porous agent by fluid-bed. Based on the release degree in vitro, prescription influence factors were evaluated, as well as drug releases curve was compared, according to the single factor experiment. RESULTS: The preparation technology referred in our research was available to make tamsulosin hydrochloride sustained-release capsules, and drug release curve of self-made sustained-release capsules was similar to the commercial one. Additionally, the products reproducibility of intra-batch and inter-batch was excellent. CONCLUSION: The tamsulosin hydrochloride sustained-release capsules prepared in this study exhibited ideal sustained-release characteristics in vitro. The formulation is reasonable and feasible. It is suitable for industrial production.
ABSTRACT
Recent studies showed that Eph/Ephrin tyrosine kinase family plays an important role in the development and functional maintenance of the nervous system, but its function in the sympathetic nervous system is still obscure. In the present study, we examined the effect of Eph/Ephrin-B1 signaling on the whole-cell currents mediated by either alpha7 or alpha3-nicotinic acetylcholine receptors (nAChRs) in acutly dissociated ciliary ganglion (CG) neurons. Firstly, we detected the effect of Ephrin-B1 on nAChRs currents. The neurons were randomly divided into control group, Ephrin-B1Fc-treated group that was stimulated by recombinant Ephrin-B1Fc, IgG-treated group, and Ephrin-B1-treated group. Secondly, we studied the regulatory mechanism of Ephrin-B1Fc on nAChRs currents. The neurons were randomly divided into control group, Ephrin-B1Fc-treated group, PP2 (inhibitor of Src tyrosine kinase) or PD98095 (antagonist of mitogen-activated protein kinase)-treated group, Ephrin-B1Fc + PP2 or PD98095-treated group. The results showed that there was no significant difference between the currents in control group, IgG-treated group and Ephrin-B1-treated group, but Ephrin-B1Fc significantly suppressed both alpha3-nAChRs and alpha7-nAChRs-mediated currents (P=0.002, P=0.003). Pretreatment with PP2 or PD98095 could partially rescue the Ephrin-B1Fc-induced suppression of currents mediated by alpha3-nAChRs or alpha7-nAChRs respectively. These results suggest that the Eph/Ephrin-B1 signaling may inhibit alpha3-nAChRs and alpha7-nAChRs-mediated currents on CG neurons, involving Src tyrosine kinase and mitogen-activated protein kinase signaling in the regulation of sympathetic nervous system.
Subject(s)
Ephrin-B1 , Metabolism , Ganglia, Parasympathetic , Mitogen-Activated Protein Kinases , Metabolism , Neurons , Receptors, Nicotinic , Metabolism , Signal Transduction , alpha7 Nicotinic Acetylcholine Receptor , Metabolism , src-Family Kinases , MetabolismABSTRACT
<p><b>OBJECTIVE</b>To investigate the biocompatibility of polyurethane-BaFe(12)O(19) magnetic composite microsphere as a new endovascular embolization material.</p><p><b>METHODS</b>The biocompatibility of BaFe(12)O(19) particle was evaluated in vitro using Ames test, cell toxicity test, acute and subacute systemic toxicity test, hemolysis test, bleeding time and clotting time test and blood clotting function assay.</p><p><b>RESULTS</b>Ames test showed that the MR values of this particle leaching solution were all less than 2 without mutagenicity. Cell toxicity test showed that leaching solution at different concentrations had grade I toxicity on L929 cells. Acute and subacute systemic toxicity test showed that the experimental animals had good general condition without obvious pathological abnormality. The hemolysis rate of experimental group was 2.43%, which met the ISO standard (no more than 5%). The bleeding time and clotting time in mice were comparable between the experimental group and control group (P>0.05). There were no significant differences in blood clotting function between experimental group and control group (P>0.05).</p><p><b>CONCLUSION</b>The material has no obvious toxicity or mutagenicity, and does not cause hemolysis or hemopexis or affect the bleeding time and clotting time. Polyurethane-BaFe(12)O( 19) particle possesses satisfactory biocompatibility.</p>