OBJECTIVE:To improve the quality standard of Jianpi zhixiening granules. METHODS:TLC was applied for qual-itative identification of Scutellaria baicalensis,Crategi Fructus,Lonicerae japonicae,Codonopsis Radix,Nelumbo nucifera,Copti-dis Rhizoma. The contents of berberine hydrochloride and baicalin were determined by HPLC. The determination was performed on Shimadzu VP-ODS column with mobile phase consisted of methanol-acetonitrile-water (46:30:42,V/V/V,berberine hydrochlo-ride))(0.1% sodium dodecylsulphate,0.1% phosphoric acid,methanol-0.4% phosphoric acid(50:50,V/V,baicalin)at the flow rate of 1.0 mL/min. The detection wavelengths were set at 265 nm (berberine hydrochloride) and 280 nm (baicalin). The column temperature was 30 ℃,and sample size was 10 μL. RESULTS:TLC spots of S. baicalensis,Crategi Fructus,L. Japonicae,Co-donopsis Radix,N. nucifera,Coptidis Rhizoma were clear and well-separated without negative interference. The linear ranges of berberine hydrochloride and baicalin were 6.67-33.34 μg/mL(r=0.9998)and 7.7-38.7 μg/mL(r=0.9999). RSDs of precision,sta-bility and reproducibility tests were all lower than 1.0% . The recoveries were 96.5% -99.9%(RSD=1.2% ,n=6)and 101.1%-102.9%(RSD=0.6%,n=6). CONCLUSIONS:Improved standard can be used for quality control of Jianpi zhixiening granules.

Objective To explore and evaluate the model of antiretroviral treatment that oriented to the medical needs of people living with HIV/AIDS (HIV/AIDS),based on the local prevalence of HIV/AIDS.Methods A total of 268 HIV/AIDS were selected the CDC of 13 administrative district in Wuhan from 2012 to 2013 and 275 HIV/AIDS were selected in the hospitals of 13 administrative district in Wuhan from 2013 to 2014.The antiretroviral effect of the two groups was compared and the related factors were analyzed.Results An antiretroviral treatment network that oriented to the medical needs of HIV/AIDS was developed.Data showed that the adherence of patients was better than that when the treatment was carried out at the CDC offices and the status of immuno-recovery on HIV/AIDS was more effective than the hospital-based treatment (P＜0.05).Data from multivariable logistic regression analysis showed that different patterns did play different roles on the effects of treatment.Conclusions The mode of antiretroviral treatment that oriented to the medical needs of HIV/AIDS could effectively improve the adherence and outcomes of treatment.We believe this model could also be adopted elsewhere.

Objective:To evaluate the reliability and validity of the Reward Probability Index-Chinese version (C-RPI) among individuals with opioid dependence.Methods:A total of 160 individuals with opioid dependence were recruited from the methadone maintenance treatment(MMT) programs in Wuhan.The C-RPI was used in the investigation, and items/exploratory factors and confirmatory factors were adopted to analyze with IBM SPSS 22.0 and AMOS 24.0, respectively.Results:The correlation between each item and the total score of the scale was 0.325-0.657 (all P<0.01) and the item discrimination of the scale was good.Exploratory factor analysis extracted two factors, including reward probability and environmental suppressors, and a load of each item on its factor ranged from 0.519 to 0.744.The fitting indexes of confirmatory factor analysis were as follows: χ 2/ df=1.623, RMR=0.030, RMSEA=0.063, IFI=0.902, TLI=0.885, CFI =0.900.The internal consistency coefficient (Cronbach's α) of the C-RPI was 0.800; and there was no ceiling/floor effect on each dimension and total scale. Conclusion:The classification of dimensions for the C-RPI is reasonable, and the scale has good reliability and validity to measure the ability to obtain environmental rewards for individuals with opioid dependence.

BACKGROUND:Diabetic osteoporosis is gaining public attention.However,few studies have reported the effect of a high-glucose environment on the osteogenic differentiation of human umbilical cord mesenchymal stem cells and the corresponding therapeutic strategies. OBJECTIVE:To investigate whether vitamin D3 can restore the osteogenic differentiation potential of human umbilical cord mesenchymal stem cells in a high-glucose environment. METHODS:The viability of human umbilical cord mesenchymal stem cells was detected by CCK-8 assay to screen the appropriate vitamin D3 intervention concentration.Under the high-glucose environment,RT-qPCR,western blot assay,immunofluorescence,JC-1 mitochondrial membrane potential,alizarin red staining,and β-galactosidase staining were used to evaluate the osteogenic differentiation potential,intracellular reactive oxygen species accumulation,mitochondrial membrane potential alteration,and cell senescence of human umbilical cord mesenchymal stem cells after vitamin D3 intervention.The underlying mechanism was also discussed. RESULTS AND CONCLUSION:(1)Vitamin D3 significantly promoted the proliferation of human umbilical cord mesenchymal stem cells in the range of 0.1 μmol/L to 1 mmol/L.(2)High-glucose environment down-regulated the mRNA and protein level expressions of osteogenic-related genes α1-I collagen,alkaline phosphatase,Runt-associated transcription factor 2,and osteocalcin in human umbilical cord mesenchymal stem cells,which induced oxidative stress and cellular senescence.(3)Vitamin D3 at an intervention concentration of 10 μmol/L significantly restored the osteogenic phenotype of human umbilical cord mesenchymal stem cells under high-glucose conditions and attenuated intracellular oxidative stress and cellular senescence by activating the Nrf2/HO-1 signaling pathway.(4)These findings suggested that the osteogenic differentiation ability of human umbilical cord mesenchymal stem cells was reduced in the high-glucose environment,and vitamin D3 could partially improve their osteogenic differentiation ability and reduce cell damage.

BACKGROUND:Osteoporosis has a high incidence,leading to fracture and other complications.However,existing drugs have great side effects and are difficult to meet the clinical application. OBJECTIVE:To explore the effect and potential mechanism of fucoxanthin on osteoporosis induced by glucocorticoid. METHODS:Primary rat osteoblasts were inoculated in 6-well plates.When the cell fusion reached 80%,the cells were divided into four groups:the control group was cultured alone for 24 hours,the glucocorticoid group was intervened with dexamethasone for 24 hours,the fucoxanthin group was intervened with fucoxanthin for 24 hours,and the glucocorticoid + fucoxanthin group was intervened with dexamethasone and fucoxanthin at the same time for 24 hours.After intervention,cell proliferation,apoptosis,intracellular reactive oxygen species level,and protein expression of apoptosis-related proteins,bone formation-related proteins,and nuclear factor erythroid-2-related factor 2 were detected. RESULTS AND CONCLUSION:Cell counting kit-8 results showed that the cell viability was decreased in the glucocorticoid group compared with the control group(P＜0.05)but increased in the glucocorticoid+fucoxanthin group compared with the glucocorticoid group(P＜0.05).JC-1 mitochondrial membrane potential staining and flow cytometry assay showed that the percentage of apoptosis increased in the glucocorticoid group compared with the control group(P＜0.05)but decreased in the glucocorticoid+fucoxanthin group compared with the glucocorticoid group(P＜0.05).Western blot assay showed that compared with the control group,the protein expression of BAX and cleaved poly(ADP-ribose)polymerase was elevated in the glucocorticoid group(P＜0.05),and the protein expression of BCL2,type Ⅰ collagen α1 peptide chain,alkaline phosphatase,osteocalcin,and RUNX2 was decreased in the glucocorticoid group(P＜0.05).Compared with the glucocorticoid group,the protein expression of BAX and cleaved poly(ADP-ribose)polymerase was decreased(P＜0.05),and the protein expression of BCL2,type Ⅰ collagen α1 peptide chain,alkaline phosphatase,osteocalcin,and RUNX2 was elevated(P＜0.05)in the glucocorticoid+fucoxanthin group.Fluorescent probe assay showed an increase in reactive oxygen species level in the glucocorticoid group compared with the control group(P＜0.05)and a decrease in reactive oxygen species level in the glucocorticoid+fucoxanthin group compared with the glucocorticoid group(P＜0.05).Immunofluorescence staining and western blot assay showed that the protein expression of nuclear factor erythroid-2-related factor 2 in the glucocorticoid group was decreased compared with that in the control group(P＜0.05);and the protein expression of nuclear factor erythroid-2-related factor 2 in the glucocorticoid+fucoxanthin group was elevated compared with that in the glucocorticoid group(P＜0.05).To conclude,fucoxanthin can improve glucocorticoid-induced osteoblast apoptosis and the expression of bone formation-related molecules by activating nuclear factor erythroid-2-related factor 2.