Objective To study immunoregulatory activity of polysaccharide of mudan cortex (PSM) on immunodepressive mice. Method The immunodepressive mice model was established with cyclophosphamide treated and tumor-bearing. PSM was orally administered to mice for 10 d. MTT method was used to observe the prolifernation of lymphocytes. The function of macrophage in abdominal activity was measured. Sectrophotometric determination was adopted to evaluate the ability of plaque forming cell. Result PSM could enhance the function of macrophage, increase the content of plaque forming cell, and promote the prelifernation of lymphocytes. Conclusion PSM could enhance immunofunction of immunodepressive mice.

Objective To investigate the relationship between p62 expression,and occurrence and metastasis of nasopharyngeal carcinomas.Methods Immunohistochemical method was used to analyze p62 expression in 123 nasopharyngeal carcinoma (NPC) cases and 30 chronic nasopharyngitis cases.The clinical pathological characteristics were analyzed.Results The positive rate of p62 protein in chronic nasopharyngitis nasopharyngeal epithelium,non-metastatic NPC tissue,and metastatic NPC tissues was 13.3％,66.67％,and 84.72％,respectively,and the difference was statistically significant.The expression of p62 protein in nasopharyngeal carcinoma patients with lymph node metastasis or distant metastasis was significantly higher than non-metastatic NPC patients (P ＜ 0.01 or P ＜ 0.05).However,the expression of p62 was not related to age,gender,tumor size,and TNM stage (P ＞ 0.05).Conclusions High p62 protein expression in nasopharyngeal carcinoma tissue is closely related to the occurrence and metastasis of nasopharyngeal carcinomas.It provides good reference value to predict NPC malignancy and metastases.

OBJECTIVETo investigate surgical outcomes of strip nail internal fixation with bone graft in treating tibial plateau fracture.

METHODSFrom May 2012 to May 2014,36 patients with tibial plateau fracture were retrospectively analyzed, including 25 males and 11 females with an average age of 43.5 (ranged from 17 to 65) years old. The time from injury to operation ranged from 3 to 10 days with an average of 5.8 days. All patients were treated with L-shaped and T-shaped strip nail internal fixation with bone graft. It was evaluated by the Knee Functional therapy assessment method of the Special Surgical Hospital of American at final following-up. Varus angle, caster angle and femorotibial angle were recorded and compared at 3 days and 1 year.

RESULTSOperative time was (2.2 ± 0.6) h on average, blood loss was (310.5 ± 36.2) ml on average, hospital stay was (14.8 ± 2.7) days on average. Thirty-six patients were followed up from 12 to 30 months with an average of 18.2 months. Fracture healing time ranged from 4 to 8 months with an average of 6.2 months. The difference is not significant among varus angle, caster angle and femorotibial angle at 3 days and 1 year. According to the knee functional therapy assessment method of the Specialized Surgical Hospital of American, 18 cases got excellent results, 13 good, 4 moderate and 1 poor.

CONCLUSIONStrip nail internal fixation with bone graft for the treatment of tibial plateau fracture could effectively prevent the joint surface from secondary collapse, and achieve anatomic reduction, stable fixation and earlier functional exercise in further to get satisfied clinical effects.

Adolescent ; Adult ; Aged ; Bone Nails ; Bone Transplantation ; Female ; Fracture Fixation, Internal ; methods ; Fracture Healing ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Tibial Fractures ; physiopathology ; surgery

This research explored the synergistic effects and the potential mechanisms of RCE-4 and various nonsteroidal anti-inflammatory drugs (NSAIDs) on the proliferation of cervical cancer Ca Ski cells. The MTT assay and CalcuSyn V2.0 software were used to detect cell proliferation and calculate the combination index (CI); the expression levels of various proteins were analyzed using Western blot assay; mitochondrial membrane potential (MMP) was assessed using JC-1 staining; acridine orange/ethidium bromide (AO/EB) double-fluorescence staining was used to detect the apoptosis of Ca Ski cells; a co-immunoprecipitation (Co-IP) assay was used to analyze the relative content of Bcl-2-Beclin 1 complex in Ca Ski cells. The results demonstrate that the combination of RCE-4 and NSAIDs increases the inhibition of Ca Ski cells compared to the single-RCE-4 group, and celecoxib provided the best synergistic effect among the four NSAIDs tested, with a CI of 0.32. The combination of RCE-4 and celecoxib significantly down-regulated the expression of cyclooxygenase-2 (COX-2) and nuclear transcription factor-κB (NF-κB), and promoted the expression of non-steroidal anti-inflammatory drugs activity gene-1 (NAG-1). In addition, autophagy induced by RCE-4 was markedly inhibited in combination with celecoxib, which was associated with down-regulation of the expression of microtubule-associated protein 3 (LC3)-II, Beclin 1, p62 and autophagy-related gene (ATG) 3/4B/5/7/14. RCE-4-induced apoptosis was significantly enhanced by altering the depolarization of mitochondrial membrane potential and the expression of B cell lymphoma-2 (Bcl-2), B cell lymphoma-xl (Bcl-xl), Bcl-2 associated X protein (Bax), Bcl-2/Bcl-xl-associated death promoter (Bad) and cleaved cysteinyl aspartate specific proteinase (cleaved-caspase) 3/7/9. Furthermore, the formation of the Bcl-2-Beclin 1 complex was significantly inhibited in Ca Ski cells treated with RCE-4 in combination with celecoxib. Taken together, this research shows that the combination of RCE-4 and celecoxib has a significant synergistic effect on the proliferation of Ca Ski cells by promoting apoptosis, inhibiting autophagy and disturbing the formation of the Bcl-2-Beclin 1 complex, which may be a novel strategy to increase the sensitivity of anti-cervical cancer drugs.

Objective To study the hepatocyte cells infected by hepatitis C virus (HCV) positive serum. Methods Human hepatocyte 7701 was incubated with HCV RNA-positive and HCV antibody(Ab) negative sera BP52. Then, the expression of HCV antigen and the presence of HCV-RNA in cell and supernatant were assayed by RT-PCR, sequence analysis, immunofluorescent staining, Western blot, confocal laser microscopy. The ultrastructural changes of infected cells were observed by electro-microscopy. Results Plus-strand RNA and minus-strand RNA were intermittently detected in cell and/or supernatant on day 7-45 after infection. Sequence analysis demonstrated that the positive DNA nucleic acids were identified with HCV 5′-non-coding region(NCR) sequence. HCV core and NS3 protein were expressed in cytoplasm of infected cells. After 2 or 3 weeks, obvious intracellular ultrastructural changes and virus-like particles were observed. Conclusion human hepatocyte 7701 could support replication of HCV in vitro, which could be a useful tool for setting up cell model of HCV infection and studying the mechanism of HCV infection.

Objective To investigate the changes and clinical significance of serum lactate dehydrogenase (LDH),creatine kinase (CK),glutamate pyruvate transaminase (AST),and cerebrospinal fluid lactate dehydrogenase (CSF LDH) in adult patients with acute central nervous system infection.Methods The levels of myocardial enzymes (AST,LDH,and CK) in serum of 96 adult patients with acute intracranial infection in 7days and 39 healthy people were measured by Beckman automatic biochemical analyzer and enzyme rate assay,and CSF LDH level in 96 patients were measured simultaneously.Results (1) The serum myocardial enzymes (LDH,CK,and AST) of intracranial infection group (47 cases with viral encephalitis,30 cases with tuberculous meningitis,and 19 cases with purulent encephalitis) were significantly higher than those of normal control group (P ＜0.01).(2)The myocardial enzymes (LDH,and AST ) of patients with cerebral functional disorder were significantly higher than those of patients with normal cerebral function (P ＜0.05).(3)The levels of serum AST,LDH,and CK in the virus encephalitis group,serum AST and LDH in the purulent encephalitis group,and serum LDH in the tuberculous meningitis group were significantly higher than those in the control group (P ＜ 0.01).The CSF LDH level in the viral meningitis group was prominently lower than that in the tuberculous encephalitis group and purulent encephalitis group,respectively (P ＜0.01).(4) No correlations were found between CSF LDH and serum myocardial enzymes (P ＞0.05).Conclusions (1)There is significant change in the levels of serum LDH,CK,AST,and CSF LDH of adult patients with acute intracranial infection,especially in infected patients with cerebral functional disorder,and the change of LDH is the most obvious.(2)The levels of serum myocardial enzymes and CSF LDH are helpful to the differential diagnosis of intracranial infection in early stage,and judging the severity of the illness.

The effects of ultrafine grinding on the dissolution rates of the effective components in Sanjie Zhentong capsule (SZC) were studied in this experiment. Fine and ultrafine powder of SZC intermediates were made by ordinary grinding and ultrafine grinding technology, and then granulated by wet granulation. SZC were prepared by fine powder, ultrafine powder and ultrafine granules, respectively. With resveratrol and loureirin B as investigated indexes, dissolution rates of the four intermediates in SZC were determined by cup method and HPLC. The dissolution rates of resveratrol in SZC prepared by fine powder, ultrafine powder and ultrafine granules were 26.11%, 63.27%, 67.49%, respectively; and the dissolution rates of loureirin B were 7.160%, 20.29%, 23.05%, respectively. The dissolution rate of resveratrol and loureirin B in SZC prepared by ultrafine granules was the best. D90 size of ultrafine grinding was 13.221 μm and could improve the dissolution rates of resveratrol and loureirin B in SZC.
Capsules ; chemistry ; Drugs, Chinese Herbal ; chemistry ; Particle Size ; Silicones ; chemistry ; Solubility ; Technology, Pharmaceutical ; methods

Objective To investigate the predicting value of serial serum human stromelysin-2 (ST2)testing on prognosis in elderly patients with acute heart failure(AHF).Methods 75 AHF patients aged 60 to 90 were selected in our study who were in Beijing Hospital during 2013.1 ～ 2014.8,blood sampling of serum ST2 took place at admission and 72-96 h later.Moreover,38 healthy people aged 70 to 80 were chosen as control group.Follow-up was performed 1 year after acute attack.We defined the end of observation as recurrence of heart failure or any cause of death.The data was analyzed by SPSS19.0.Results Among 55 AHF patients,sST2 level was higher in patients with endpoint events than those without it on the two moment(P=0.000).And we found that the change in sST2 was higher in patients with endpoint events than those without it(P=0.023);and the percentage change in sST2 was also significantly different(P=0.033).Receiver operator curve analysis of the change in sST2 from baseline to 72-96 h later was strongly reflective of prognosis with area under the curve(AUC) of 0.696(P=0.013).And the change in sST2 Combined with the sST2 level at admission to predict the prognosis of AHF,the result would be more exciting,the area under the receiver operating characteristic (ROC) curve is 0.861 (P ＜ 0.001).The endpoint event rate of the patients whose level of sST2 at admission was below 1408 ng/L and the change level in sST2 below 101 ng/L was 21.4％(3/14),while the data in patients whose level of sST2 at admission is above 1 408 ng/L and the change level in sST2 above 100 ng/L was 85.7％(12/14).Conclusions in elderly patients of AHF,sST2 elevate markedly.The result shows that the level of sST2 may be used to evaluate AHF prognosis.And the change in sST2 are able to predict the prognosis of AHF.Compared with NT-proBNP,serial sST2 testing appears to be a promising candidate for monitoring these patients.

Objective : To explore the reform of the operating mechanism of centers for disease control and prevention ( CDCs ) in the new era, and to put forward recommendations. Methods : We collected the financial investment and staffing of CDCs in Zhejiang Province from 2018 to 2020 through China Disease Prevention and Control Information System and Zhejiang Health Statistical Yearbook. We conducted a questionnaire survey among 620 staffs selected by convenience sampling, and a qualitative interview among 40 leaders and experts from CDCs and general hospitals in Zhejiang Province. Results : By the year 2020, there were 105 CDCs in Zhejiang Province, including 1 province-level, 11 prefecture-level, 90 county-level and 3 development zone-level ones. The revenues were mainly from financial subsidy and business incomes, which were over expenditures. There were 7 008 posts in CDCs, with a staffing allocation ratio of 1.29/10 000. Among the reform measures of operation mechanism of CDCs, the flexible communication between clinicians and public health doctors was highly approved (90.03%); among the reform measures of enhancing the integration of prevention and treatment, further clarifying the public health functions of hospitals and ensuring financial compensation was highly approved (74.01%). Conclusion We should further stimulate the endogenous power and vitality of CDCs, strengthen the construction of talent team, promote the active integration of hospitals and CDCs, and improve public health level.

Objective To investigate the influence of transcriptional factor Sp1 on expression of bile acids transporters MRP3 and MRP4 so as to perfect the regulatory mechanism of MRP3 and MRP4 expression.Methods Transformed Sp1-overexpression and Sp1 siRNA plas-mids to HepG2 cell and obtained the stably cells line.Then the expression levels of bile acids transporters MRP3 and MRP4 were measured by RT-qPCR,and the change of protein levels were detected by Western blot.Results The stably cells line Sp1-OE-HepG2 and Sp1siRNA-HepG2 were successfully transformed.The mRNA expression and protein levels of MRP3 and MRP4 were significantly increased in Sp1-OE-HepG2 cells,among which the mRNA expression of MRP3 mRNA increased 2.8 times,the protein levels of MRP3 increased 3.0 times,and the mRNA expression and protein levels of MRP4 increased 3.2 times and 2.5 times respectively.Conversely,the mRNA expression and protein levels of MRP3 and MRP4 were decreased in Sp1 siRNA-HepG2 cells,among which the mRNA expression of MRP3 mRNA de-creased 52%,the mRNA expression of MRP4 mRNA decreased 58%,the protein levels of MRP3 decreased 57%,and the protein levels of MRP4 decreased 60%.Conclusion Transcriptional factor Sp1 could regulate the expression of bile acids transporters MRP3 and MRP4 in HepG2 cells.