Background: and Purpose Live cell-based assays (LCBA) are increasingly used for serological antibody detection due to their ability to preserve antigen conformation, offering moderately higher sensitivity than fixed cell-based assays. However, the clinical necessity of prioritizing LCBA for the detection of aquaporin-4 immunoglobulin G (AQP4-IgG) in neuromyelitis optica spectrum disorder (NMOSD) remains unclear, especially when compared to its established role in diagnosing myelin oligodendrocyte glycoprotein antibody-associated disease. Methods: We compared the performance of live cell-based assays using immunofluorescence (LCBA-IF) and fixed cell-based assays using immunofluorescence (FCBA-IF) in detecting AQP4-IgG in 90 cases of NMOSD meeting 2015 International Panel for Neuromyelitis Optica Diagnosis criteria, alongside 40 controls. Additionally, we further investigated the relationship between AQP4-IgG titers as measured by LCBA-IF and FCBA-IF and clinical parameters in NMOSD patients. Results: Results showed 96.9% agreement between LCBA-IF and FCBA-IF (Cohen’s κ=0.935), with a strong Spearman correlation (0.977, p<0.001). Both methods demonstrated 100% specificity, with LCBA-IF showing slightly higher sensitivity compared to FCBA-IF. Within LCBAIF-tested groups, statistically significant differences in annualized relapse rates were observed across all pairwise comparisons (low-titer vs. moderate-titer, low-titer vs. high-titer, and moderate-titer vs. high-titer; all p<0.050). However, this association reached statistical significance in some FCBA-IF-tested groups. Conclusions Overall, there is a strong concordance between LCBA-IF and FCBA-IF in detecting AQP4-IgG, where LCBA-IF shows slightly higher sensitivity. Furthermore, there is a potential link between elevated AQP4-IgG titers and an increased risk of relapse, and this correlation may appear more pronounced when using LCBA-IF.

OBJECTIVE：To provide reference for improving the quality sta ndard of Equisetum hyemale . METHODS ：Totally 10 batches of E. hyemale from different sites were collected as samples. TLC method was used to qualitatively identify kaempferol- 3-O-β-sophoroside. The contents of heavy metal ，aflatoxin，impurity，moisture，total ash ，acid-insoluble ash ，water-soluble extract and ethanol-soluble extract were determined according to supplementary provisions of Chinese Pharmacopoeia （2015 edition）. HPLC method was used to determine the content of kaempferol- 3-O-β-sophoroside in sample. HPLC fingerprint of water-soluble extract from E. hyemale was also established. RESULTS ：TLC identification showed that in the chromatogram of the test sample ， fluorescent spots with the same color were displayed on the corresponding positions of the chromatogram of substance control of kaempferol-3-O-β-sophoroside，and without interference from blank control. Among 10 batches of samples ，the contents of impurities were 0.19％-2.32％；the water contents were 10.12％-11.87％；the total ash contents were 6.67％-10.11％；the acid-insoluble ash contents were 1.34％-2.12％；the water-soluble extract contents were 9.17％-13.99％；the ethanol-soluble extract contents were 7.49％-13.68％，respectively. It is preliminarily proposed that the impurity content shall not exceed 3.00％；the total ash content shall not exceed 10.00％；the acid-insoluble ash content shall not exceed 2.50％；the water-soluble extract content shall not be less than 9.00％ ；the ethanol-soluble extract content shall not be less than 5.00％. Arsenic（0.064-0.225 mg/kg） 010815） was detected in 9 batches of samples ；cadmium（0.106-0.132 E-mail：cruise0303@163.com mg/kg）was detected in 6 batches of samples ；lead（0.221- 1.896 mg/kg）was detected in all samples ，but no mercury or rebecca aflatoxin was detected. The results of HPLC method met the relevant requirements of Chinese Pharmacopoeia . The content of kaempferol- 3-O-β-D-sophoroside in 10 batches of samples was 627.12-5 384.53 mg/kg，and the similarity of HPLC fingerprints of 10 batches of samples was more than 0.900. CONCLUSIONS ： A new qualitative and quantitative analysis method for kaempferol- 3-O-β-D-sophoroside was established ；the heavy metals ， aflatoxins，impurities and other items in E. hyemale were detected ；the limits of impurity ，ash and extract were determined. The established method is simple ，accurate and reproducible ，and can be used for quality control of E. hyemale .

Objective:To explore efficacy and safety of endovascular therapy combined with hyperbaric oxygen (HBO) intervention in acute anterior circulation macrovascular occlusion stroke.Methods:A total of 150 patients with acute anterior circulation macrovascular occlusive stroke admitted in No.902 Hospital of the CPLA Joint Logistic Support Force were selected and randomly divided into endovascular treatment group and combined treatment group (endovascular+ HBO). Endovascular therapy was adopted in the treatment of all patients. Modified thrombolytic flow grading (mTICI) was used to evaluate vascular recanalization after operation, and the incidences of complications of hemorrhage transformation and vascular re-occlusion were recorded. National institutes of health stroke scale (NIHSS) was used to evaluate the neurological functions on admission, at 24 hours after the operation, and one course after HBO therapy. The prognosis was evaluated by observing the changes of blood homocysteine (HCY) and high-sensitivity C-reactive protein (hs-CRP) levels before and after treatment. The patients had been followed up by the modified Rankin Scale (mRS) for 90 days. At the same time, 75 patients with acute anterior circulation macrovascular occlusive stroke without taking endovascular treatment were selected as the control group.Results:Among 150 patients, 126 cases had a grade of mTICI≥2b, while 24 cases had a grade of mTICI<2b. Postoperative vascular re-occlusion occurred in 3 cases, and symptomatic intracranial hematoma occurred in 6 cases. The NIHSS score at 24 hours after the operation was significantly lower than that on admission, and the NIHSS score was further improved after HBO treatment. Ninety days after the operation, mRS showed 98 cases of good prognoses, while 52 cases of poor prognoses. The levels of HCY and hs-CRP were significantly lower than those before the treatment.Conclusion:Endovascular therapy for acute anterior circulation macrovascular occlusive stroke is safe and effective. Postoperative HBO therapy can significantly improve the prognosis and the quality of life of patients.

Objective:To explore efficacy and safety of endovascular therapy combined with hyperbaric oxygen (HBO) intervention in acute anterior circulation macrovascular occlusion stroke.Methods:A total of 150 patients with acute anterior circulation macrovascular occlusive stroke admitted in No.902 Hospital of the CPLA Joint Logistic Support Force were selected and randomly divided into endovascular treatment group and combined treatment group (endovascular+ HBO). Endovascular therapy was adopted in the treatment of all patients. Modified thrombolytic flow grading (mTICI) was used to evaluate vascular recanalization after operation, and the incidences of complications of hemorrhage transformation and vascular re-occlusion were recorded. National institutes of health stroke scale (NIHSS) was used to evaluate the neurological functions on admission, at 24 hours after the operation, and one course after HBO therapy. The prognosis was evaluated by observing the changes of blood homocysteine (HCY) and high-sensitivity C-reactive protein (hs-CRP) levels before and after treatment. The patients had been followed up by the modified Rankin Scale (mRS) for 90 days. At the same time, 75 patients with acute anterior circulation macrovascular occlusive stroke without taking endovascular treatment were selected as the control group.Results:Among 150 patients, 126 cases had a grade of mTICI≥2b, while 24 cases had a grade of mTICI<2b. Postoperative vascular re-occlusion occurred in 3 cases, and symptomatic intracranial hematoma occurred in 6 cases. The NIHSS score at 24 hours after the operation was significantly lower than that on admission, and the NIHSS score was further improved after HBO treatment. Ninety days after the operation, mRS showed 98 cases of good prognoses, while 52 cases of poor prognoses. The levels of HCY and hs-CRP were significantly lower than those before the treatment.Conclusion:Endovascular therapy for acute anterior circulation macrovascular occlusive stroke is safe and effective. Postoperative HBO therapy can significantly improve the prognosis and the quality of life of patients.

Objective To understand the status quo and demanding of resident pension service in Chongqing urban communities to provide the reference for constructing the community pension service system.Methods The questionnaire survey was conducted on 1 080 residents aged 50 years old or older in the nine districts of Chongqing City.Results 89.1％ of the respondents didn't have any pension service,but the currently facing maximal difficulty Was the low proportion of medicare reimbursement,the main service that the elderly wanted to get was life care,security safeguards services and ordinary medical help;73.4％ of the respondents were willing to try the integrated pension service model.Conclusion The government or related departments should optimize new pension resources,increase the funding sources,make reasonable overall planning and construct the pension service model.

Through summarizing and analyzing the characteristics of elderly infertile people,the problems emer-ging in the assisted reproduction process and the possible ethical problems emerging in the assisted reproduction treatment of elderly patients,this paper explored how to build the ethical path which aimed at elderly pregnancy -assisted people and suitable for Reproductive Center in the First Affiliated Hospital of Xinjiang Medical University. And aiming at the possible ethical problems emerging in the process of assisted reproduction treatment of elderly pa-tients,this paper put forward that it should establish normative ethical working path,to be more convenient to fully conduct ethical supervision and examination in the process of assisted reproduction treatment of elderly patients.

Objective To study the impacts of lipopolysaccharide on expressions of Cx43 and TLR4 proteins in bladder cancer cell lines and on cell proliferation and apoptosis. Methods 5637 cells were cultured in vitro. After stimulation with LPS,expressions of Cx43 and TLR4 proteins were detected by Western blot in bladder cancer 5637 cell. The proliferation and apoptosis in the 5637?control group,5637?LPS group,and 5637?LPS +cisplatin group were detected by CCK?8(cell counting kit)and flow cytometry. Results The gene expression of Cx43 in the 5637?LPS group was significantly higher than that in the 5637?control group(t=3.892,P=0.012). The expressions of TLR4 and Cx43 in 5637?LPS group were significantly higher than those in the 5637?control group(t=7.029,P=0.019;and t=18.17,P=0.003). The proliferation was significantly decreased in the 5637?control group as compared with the 5637?LPS group (t = 8.756,P = 0.018). The apoptotic rate was (8.3 ± 1.58)% in the 5637?control group and (7.8 ± 2.03)% in the 5637?LPS group,with no significant statistical difference(t = 2.935,P = 0.099). However,the rate of the 5637?cisplatin group(60 ± 4.35)%was higher than that in 5637?cisplatin + LPS group(52 ± 6.25)%,the difference was statistically significant(t = 6.992,P =0.019). Conclusions Under the stimulation of LPS,bladder tumor cells may induce tumor cells to escape immune surveillance by increasing the expressions of TLR4 and Cx43.

Objective To analyse the efficacy of methotrexate combined with mifepristone in treatment of 130 cases heterotopic pregnancy. Methods 130 cases heterotopic pregnancy from January 2014 to December 2014 in obstetrics and gynecology department of First Affiliated Hospital of Liaoning Medical University were divided into observation group and control group, randomly, 65 cases in each group.Patients in control group were treated with 1 mg/kg methotrexate of intramuscular injection, one time per day; patients in observation group were treated with mifepristone of oral, one time per day, 75mg per time on the basis of control group.The serum β-subunit of human chorionic gonadotropin (β-hCG), normal pregnancy rate, size of enclosed mass, rate of treatment success and adverse reactions in two groups were compared.Results The recovery time of serum β-HCG in observation group was shorter than that in control group ( P <0.05 ) , and normal pregnancy rate in observation group was higher than that in control group (P<0.05).After 7 and 14 days’ treatment, size of enclosed mass in observation group was smaller than that in control group (P<0.05).After two months’ treatment, the efficacy in observation group was higher than that in control group (92.31%vs.61.54%;χ2 =17.33,P<0.05).There was no significant difference in adverse reactions rate between two groups (χ2 =0.34,P>0.05).Conclusion Methotrexate combined with mifepristone could improve the clinical efficacy which is a safe therapy with few adverse reactions.

OBJECTIVE: To explore the role of IL-21 in the pathogenesis of myasthenia gravis (MG) and its influence on the the class switch of anti-AChR antibodies. METHODS: Blood was taken from 26 patients and 18 healthy controls, and the expression of IL-21R mRNA in peripheral blood mononuclear cells (PBMCs) was detected by RT-PCR. The expression of IL-21R on B lymphocytes was measured by flow cytometry, while the concentrations of serum IL-21 and the levels of anti-AChR-IgG and its isotype IgG(1), IgG(2), and IgG(3) were tested by ELISA. RESULTS: The serum concentration of IL-21 in the MG group was higher than that in the control group (31.686±8.499 pg/mL, 15.147±6.366 pg/mL) and the difference was significant (P<0.01). IL-21R mRNA expressed on PBMCs in the MG group was higher than that in the control group (0.139±0.052, 0.101±0.022), and the difference was significant (P<0.05). There was no difference between ocular MG and generalized MG subgroup (P>0.05). Compared with the control group, the expression of IL-21R on B lymphocytes also increased in the MG group (P<0.05). In the anti-AChR-Ab positive MG group, the serum concentration of IL-21 showed positive correlation with anti-AChR-IgG(P<0.05),but no correlation with its isotype IgG(1), IgG(2), and IgG(3), respectively(P>0.05). Expression of IL-21R mRNA in the PBMCs showed no correlation with the level of serum anti-AChR-IgG and its isotype IgG(1), IgG(2), and IgG(3), respectively(P>0.05); however the expression of IL-21R in B lymphocytes showed positive correlation with anti-AChR-IgG and it's isotype IgG(1) and IgG(3) (P<0.05,P<0.01,P<0.05), but no correlation with IgG(2) (P>0.05). CONCLUSION IL-21 might induce the class switch of anti-AChR antibodies to IgG(1) and IgG(3) isotype through IL-21R on B lymphocytes which promotes the pathogenesis of the MG.
Adolescent ; Adult ; Autoantibodies ; classification ; immunology ; Female ; Humans ; Immunoglobulin Class Switching ; immunology ; Immunoglobulin G ; classification ; Interleukins ; blood ; genetics ; Male ; Middle Aged ; Myasthenia Gravis ; blood ; immunology ; RNA, Messenger ; blood ; genetics ; Receptors, Cholinergic ; immunology ; Receptors, Interleukin-21 ; blood ; genetics ; Young Adult

Objective To establish the national standard materials for haemiglobincyanide (HiCN) for the traceability assays of hemoglobin. Methods HiCN national standard materials were established according to the document of International Committee for Standardization in Haematology (ICSH). The standard materials were certificated according to ISO Guide 35, including homogeneity and stability. Then they were characterized by the calibrated spectrophotometer which can be traceable to National Institute of Standards and Technology (NIST). The international reference materials of HiCN were compared with the result of the WHO reference laboratory to confirm the reliability. Results The uncertainty of the HiCN standard materials was 0.000 4 g/L and the variation coefficient (CV) was 0.09%. The uncertainty of long-term stability was 0.000 6 g/L; the certificated value of the standard materials was 0.615 9 g/L with uncertainty of 0.000 4 g/L. The combined uncertainty was 0.000 9 g/L and the expanded uncertainty was 0.001 8 g/L when the cover factor was 2. The relative error was 0.08% between the result of the standard materials and the international certificated value. Conclusion The homogeneity and stability of the standard material is acceptable and the method of characterization is accurate and reliable.