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Objective@#To identify post-marketing active surveillance systems for vaccine safety around the world and understand their features and mechanisms, in order to provide guidance for vaccine administration activities in China.@*Methods@#Following the steps of scoping review, literature about active surveillance system for vaccine safety and published by 30 June 2018 were identified by searching electronic databases, including PubMed, Scopus, and Cochrane Library. Grey literature were also sought by exploring relevant websites. Identified literature were screened according to eligibility criteria, and informative data from included literature were then charted. Framework Synthesis and Thematic Analysis were performed to integrate the charted data.@*Results@#97 pieces of literature were included for review, and 11 active surveillance systems for vaccine safety were identified, mostly located in developed countries. These systems were constructed by 3 types of organizations: administration departments, academic or research institutions, and health care providers. Their data sources included immunization registries, electronic medical records, claims data, case reports of adverse events following immunization electronic questionnaires, and epidemiologic study data. According to their operation procedures, these systems were grouped into 4 modes of active surveillance: Data Linkage, Investigator Network, Automatic Follow-up System, Studies Consortium.@*Conclusion@#Practice of active surveillance for vaccine safety greatly varies across countries, with different conditions and advantages. It is suggested that developing countries should choose suitable mode of active surveillance considering their local situations.
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Objective@#To investigate the role of CD11b agonist leukadherin-1 (LA1) in the development of intestinal inflammation and colitis disease in a mouse model of dextran sulfate sodium (DSS)-induced colitis.@*Methods@#The mouse model of experimental colitis was induced by DSS. Body weight changes and survival status were monitored every day. The length of colons was measured at day 7. Colon tissue sections were stained with hematoxylin and eosin (HE) and observed under an optical microscope for pathological analysis. The percentages of apoptotic cells in colon tissues were observed by TUNEL staining. Myeloperoxidase (MPO) activity was measured with MPO activity detection kit. IL-1β and TNF-α levels were detected by ELISA. Macrophages and TNF-α in colon tissues were observed using immunofluorescence staining and confocal microscopy. Flow cytometry was performed to detect the changes in TLR4 expression on macrophages after stimulating mice with LA1 for 0, 3, 6 and 12 h. Moreover, TLR4 expression was also measured by Western blot after treating bone marrow-derived macrophages (BMDMs) with LA1 for 0, 3, 6 and 12 h. Unpaired t-test was used for statistical analysis.@*Results@#Compared with the DSS group, the LA1+ DSS group presented lower mortality rate, greater body weight and longer colon and the differences between the two groups were statistically significant. Moreover, the LA1+ DSS group showed lighter pathological damages, decreased percentage of apoptotic cells and suppressed MPO activity as compared with those of the DSS group. The number of macrophages and the relative concentrations of IL-1β and TNF-α in colon tissues were lower in the LA1+ DSS group than in the DSS group, and the differences between the two groups were statistically significant. There was no significant difference in the total expression of TLR4 on macrophages before and after LA1 treatment. However, the mean flourscence indensity (MFI) of TLR4 was weaker on the LA1-treated macrophages than on the untreated macrophages.@*Conclusions@#LA1 could alleviate the DSS-induced experimental colitis in mice through suppressing the activation of TLR4 pathway on macrophages. This study provided a new insight and theoretical reference for understanding the pathogenesis of inflammatory bowel diseases.
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Objective To investigate the role of CD11b agonist leukadherin-1 (LA1) in the de-velopment of intestinal inflammation and colitis disease in a mouse model of dextran sulfate sodium ( DSS)-induced colitis. Methods The mouse model of experimental colitis was induced by DSS. Body weight chan-ges and survival status were monitored every day. The length of colons was measured at day 7. Colon tissue sections were stained with hematoxylin and eosin ( HE) and observed under an optical microscope for patho-logical analysis. The percentages of apoptotic cells in colon tissues were observed by TUNEL staining. My-eloperoxidase ( MPO) activity was measured with MPO activity detection kit. IL-1β and TNF-α levels were detected by ELISA. Macrophages and TNF-αin colon tissues were observed using immunofluorescence stai-ning and confocal microscopy. Flow cytometry was performed to detect the changes in TLR4 expression on macrophages after stimulating mice with LA1 for 0, 3, 6 and 12 h. Moreover, TLR4 expression was also measured by Western blot after treating bone marrow-derived macrophages (BMDMs) with LA1 for 0, 3, 6 and 12 h. Unpaired t-test was used for statistical analysis. Results Compared with the DSS group, the LA1+DSS group presented lower mortality rate, greater body weight and longer colon and the differences between the two groups were statistically significant. Moreover, the LA1+DSS group showed lighter pathological dam-ages , decreased percentage of apoptotic cells and suppressed MPO activity as compared with those of the DSS group. The number of macrophages and the relative concentrations of IL-1βand TNF-αin colon tissues were lower in the LA1+DSS group than in the DSS group, and the differences between the two groups were statisti-cally significant. There was no significant difference in the total expression of TLR4 on macrophages before and after LA1 treatment. However, the mean flourscence indensity ( MFI) of TLR4 was weaker on the LA1-treated macrophages than on the untreated macrophages. Conclusions LA1 could alleviate the DSS-induced experimental colitis in mice through suppressing the activation of TLR4 pathway on macrophages. This study provided a new insight and theoretical reference for understanding the pathogenesis of inflammatory bowel diseases.
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Objective To study the effects of acute coronary comprehensive syndrome with PCI therapy after secondary HIT-Ⅱ give sulphur of liver fondaparinux therapy clinical comprehensive effect.MethodsDecimation in 66 patients with acute coronary syndrome after PCI patients was applied on the basis of drug therapy and postoperative anticoagulation.Study group (33 cases) in the postoperative secondary HIT Ⅱ after being diagnosed with stop heparin and give sulphur of fondaparinux, bleeding in the coagulation indexes, within 30 days event and 6months heart vascular pieces efficacy evaluation.ResultsThe use of heparin before.The index of blood coagulation in study group were normal, confirmed HIT Ⅱ when the index change significantly (P<0.05) and the discontinuation of heparin 24h, 3d, 7d indexes compared at diagnosis were restored (P<0.05) and 14 days of heparin to stop with the use of heparin levels.The patients in the study group, the incidence of bleeding events was 9.1%, compared to 15.2% in the control group no significant difference.The patients in the study group of adverse cardiovascular events occurred rate was 12.1%, compared to 18.2% in the control group no significant difference.ConclusionAcute coronary syndrome after PCI HIT-Ⅱ to grant the sulphur of fondaparinux treatment had no significant effect on blood coagulation function and safety.
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Objective To investigate the effect and safety of Tongqiaoxingnao soup applied in elder severe craniocerebral injury stasis resistance qing qiao patients.Methods 40 cases with severe craniocerebral injury stasis resistance qing qiao were enrolled in the study,and they were divided into two groups randomly,each group had 20 cases.Patients in the monotherapy group received routine western medicine treatment,while the combination group was added the treatment of Tongqiaoxingnao soup,200mL per day for 4 weeks.GCS scores and the persistent time of coma were analyzed.After treatment for 4,8,14 days of intracranial pressure and cerebral edema were recorded and analyzed,the total effective rate and the incidence of adverse reactions were compared between two groups.Results GCS score of the combination group was (13.7 ±4.2)points,and it was obviously higher than the monotherapy (9.2 ±3.5)points (t =2.86,P 0.05 ).Conclusion Tongqiaoxingnao soup applied in elder severe craniocerebral injury stasis resistance qing qiao patients has clinical curative effect,can shorten the coma time,reduce intracranial pressure and relieve cerebral edema,and has high security,it is worthy of populari-zation and application.
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Objective To respectively analyze the patterns and possible predictors of recurrent strokes among patients with initial ischemic stroke.Methods Three hundred and sixty-one patients with recurrent strokes (acute ischemic stroke or intracerebral hemorrhage) after initial ischemic strokes were collected from Jan 2004 to Dec 2009.The data about conventional risk factors such as smoking,heavy alcohol drinking,hypertension,diabetes,hyperlipidemia,heart diseases,head trauma,migraine,family history of cardiovascular disease,and the use of preventive medications were collected and analyzed among patients with different types of recurrent strokes.Results Patients (n =361) were divided into ischemic stroke group (n =321) and hemorrhagic stroke group (n =40) according to the recurrent stroke type.The ischemic stroke group was further divided into the anterior circulation stroke subgroup (n =234),the posterior circulation stroke subgroup (n =75) and watershed cerebral infarction or multiple infarction subgroup (n =12).Multivariate logistic regression analysis revealed that older age at initial stroke onset (OR =1.036,95 ％ CI 1.006-1.067,P =0.02) and hyperlipidemia (OR =2.253,95 ％ CI 1.092-4.647,P =0.028) were both the independent risk factors for the recurrent ischemic stroke.Comparing the subgroups,multivariate logistic regression analysis showed that atrial fibrillation (OR =4.217,95％ CI 1.489-11.942,P =0.007) was the independent risk factor for the recurrent ischemic stroke in the posterior circulation territory.Conclusion Aging and hyperlipidemia are possible predictors of recurrent ischemic stroke after the initial ischemic stroke which would be useful for individualized secondary prevention of stroke.
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Objective To compare distribution difference in risk factors of patients with first-ever ischemic stroke (IS) of different age and gender.Methods A total of 1027 patients admitted to the neurological department in Shanghai Renji Hospital with first-ever IS were recruited and divided into young adult group ( ＜ 50 years old),middle-aged group (50-80 years old),and very old group ( ＞ 80 years old)according to their ages.Risk factor analysis included history of smoking,high alcohol consumption,hypertension (HT),diabetes mellitus (DM),heart diseases,atrial fibrillation (AF) and family history of cardiovascular diseases.Results Female patients were globally older than male patients (71.1 vs 65.7,P ＜ 0.001 ) at the first attack of IS and having higher prevalence of DM (26.8％ vs 19.2％,P =0.004 ),heart diseases (28.8％ vs 19.2％,P＜0.001) and AF (7.6％ vs 3.9％,P=0.009).However,female patients were less likely to drink heavily ( 1.0％ vs 31.6％,P ＜0.001 ) or smoke (4.4％ vs 59.9％,P ＜0.001 ) than the male patients.The rates of smoking and heavy drinking in young adult group were higher than that in other two groups.Patients in very old group had higher prevalence of heart diseases and AF but lower proportion of positive family cardiovascular diseases history than patients in other two groups.HT and DM were equally frequent among three groups.In young adult group,female patients were more likely to have heart diseases and family history of heart diseases (P =0.015 and P =0.048).In middle-old group,HT,DM,heart disease and AF were more common in women than in men (P =0.021,P =0.004,P =0.001 and P =0.039).Conclusion There are differences in risk factor distribution in patients with first-ever IS of different age and gender.Therefore,screening and health education should be performed in allusion to different risk factors.
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Objective To investigate the clinical feature,diagnosis and therapy of isolated Langerhans cell histiocytosis(histiocytosis X) with unusual localization.Methods A case of isolated Langerhans cell histiocytosis of the infundibulum was reported.The endocrinic tests,imaging,immunohistochemical and pathological examinations of this case were detected.Through literature review,the pathological and clinical feature,diagnosis,therapy of isolated Langerhans cell histiocytosis of the infundibulum were overviewed.Results Magnetic resonance imaging(MRI) of the brain showed a 9 mm homogeneously enhancing mass in the region of the infundibulum.No other lesion was found in other organ systems.The patient underwent an occupying lesion resection of the infundibulum via right pterion approach.Langerhans cell histiocytosis was diagnosed through pathologic analysis.She was on hormone replacement therapy and close follow-up visit postoperatively.Conclusion Isolated Langerhans cell histiocytosis of the infundibulum in adult is extremely rare.Understanding of this disease should be improved to avert misdiagnosing.
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Objective To compare the contraceptive efficacy, tolerability and bleeding patterns of Implanon and Norplant Methods One hundred healthy female volunteers received either Implanon (75 cases) or Norplant (25 cases) for 4 years, followed up with complain, bleeding patterns, hemoglobin, blood pressure, weight Record the time of insert and remove Results There were no pregnancies during the study Per 90 day reference period, the average number of bleeding spotting days with Implanon decreased from 33 day in the first period to 21 day in the last year, and Norplant decreased from 31 day to 20 day The average bleeding number of times was 2 25 of Implanon and 2 99 of Norplant per reference period( P
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Objective:To induce an anti-hCG? antibody response in reproductive tract and the peripheral by oral inoculation with a recombinant alive Lactobacilli expressing hCG? in different strains of mouse.Methods:The 108,109,1010 Lb.hCG?, a recombinant Lactobacillus expressing hCG?, were inoculated orally into 6-8-week-old female BALB/c and C57BL/6 mice. The immunized mice were all boosted with the same dose at interval of 3 weeks. An indirect ELISA was used to determine anti-hCG? IgG and IgA antibodies in vaginal lavage and serum that were got at the end of 2-8 weeks after the primary immunization. The B and T lymphocytes of spleen, uterus and vagina were prepared respectively, and their proliferation was analyzed by flow cytometry. The numbers of the cells secreting anti-hCG? IgG or IgA antibody were detected by ELISpot.Results:Inoculation of 109 or 1010 alive Lb.hCG? could induce similar response while 108 induce a lower attitude of response. The antiserum of either 109 or 1010 Lb. hCG? immunization after booster could neutralized more than 100 ng/ml of hCG antigen both in BALB/c and C57BL/6 mice. The B cell proliferation of the reproductive mucosa was more significantly higher than that of spleen in BALB/c mice(P
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Breast cancer metastasis is the main cause of tumor death and poor long-term effect in clinical treatment. In the process of metastasis, chemokine may play the main role. In the breast cancer cell, some chemokine and receptor were expressed excessively. It has been shown that through the interaction between chemokine and correspondence receptor, phagocyte and lymphocyte infiltration stimulated, tumor cell invasion into normal tissue with angiogenesis, thus the metastasis was formed. This article reviews the mechanisms of chemokine receptor CXCR4 and chemokine RANTES ,IL-8 MCP-1 in breast cancer metastasis.