ObjectiveTo investigate the recognition of cold in pharmacy college students. MethodsInvestigation on the recognition of cold, treatment and anti-cold drugs were carried out by questionnaires among 158 pharmacy college students from March to July, 2013. ResultsThe annual cold frequency was mainly between once and twice in these students. The cold therapy cost in a year was between 10 and 50 Yuan, and the treatment cycle of cold was mainly between 3 and 7 days. The students were familiar with the inducement and symptoms of cold, but they didn't get adequate message of non-chemoprophylaxis methods on cold. The students knew anti-cold drugs mainly by pharmacist in drugstores, doctors and advertisements. Traditional Chinese Medicine decoction and Chinese and Western medicine mixture were their favorite drug types, and capsule, tablet and oral solution were their favorite dosage forms. ConclusionIt is necessary to strengthen college students' ability to recognize and treat cold correctly by comprehensive measures.
ObjectiveTo analyze the status of real world studies (RWS) through registration information of the Chinese Clinical Trials Registry (ChiCTR). MethodsThe website of ChiCTR was searched with the real world as the search term to collect relevant registered items in the real world from inception to May 4, 2022. Descriptive analysis method was used. ResultsA total of 642 registered items were included. The median sample size was 482 cases. RWS were mainly observational studies, and the number of intervention studies was increasing year by year. There were 267 studies (41.59%) at the stage of post-marketing drugs or phase Ⅳ clinical trials. Most of the main measures were endpoints (56.23%), and the most commonly used was overall survival (15.79%). 62.15% of the registered projects met the minimum requirements for registration. ConclusionThe number of RWS registered by ChiCTR shows an increasing trend. At present, the research purpose of RWSs is unclear, and the completeness of registered studies and the overall content compliance of the studies need to be improved.
Objective To explore the role of hydrogen peroxide (H2O2) in inducing chronic oxidative stress in microglia aging. Methods BV2 microglia purchased from ATCC in less than 10 generations were treated with 0, 50, 100, 200 μmol/L H2O2 at different concentrations. According to the concentration of H2O2 used, the BV2 microglia were divided into a control group and H2O2 -50 μmol/L Group, H2O2 -100 μmol/L Group, H2O2 -200 μmol/L Group. Cell proliferation was measured by CCK8 cell proliferation assay. Age-related β-galactosidase (SA-β-gal) staining assay, and expression of age-related cyclin molecules p16, p21, p53 and senescence sssociated secretory phenotype interleukin 1 beta (IL-1β), transforming growth factor-β (TGF-β) and matrix metalloprotein 9 (MMP9) detected by quantitative real-time polymerase chain reaction were used to measure celluar senescence. Results During the induction process, H2O2-200 μmol/L caused significant damage to BV2 microglia, therefore no subsequent testing was conducted. Finally, the control group, H2O2-50 μmol/L group and H2O2-100 μmol/L group cells were collected. The differences in cell survival rate (F=46.176, P<0.001) and positive rate of SA-β-gal staining (F=553.1, P<0.001) among the three groups were statistically significant. The cell survival rate of H2O2-50 μmol/L group had no significant change (P>0.05), while the cell survival rate of H2O2-100 μmol/L group decreased significantly (P<0.001). The positive rate of SA-β-gal staining in H2O2-50 μmol/L group and H2O2-100 μmol/L group was increased (P<0.001), and the positive rate of SA-β-gal staining in H2O2-100 μmol/L group was higher than that in H2O2-50 μmol/L group (P<0.001). The mRNA levels of senescence related cyclin molecules p16, p21 and p53 were up-regulated under the induction of 50, 100 μmol/L H2O2 (P<0.05), and the expressions of IL-1β, TGF-β and MMP9 of senescence associated secretory phenotype were increased (P<0.05). The increase of H2O2-50 μmol/L group was more obvious (P<0.05). Conclusion The aging model of BV2 microglia can be successfully established by inducing 8 d with 100 μmol/L H2O2, and the mechanism may be related to promoting the secretion of p16, p21, p53, IL-1β, TGF-β and MMP9.