Objective Daidzein solid dispersions were prepared by solid dispersion technology to improve in vitro dissolution rate. Methods Daidzein solid dispersions were prepared by solvent method using polyvinyl pyrrolidone K30 ( PVP K30) as carrier.The in vitro dissolution characteristics of solid dispersions were evaluated,and the properties were detected by IR and XRD. Results The dissolution rates of different mass ratio of daidzein-PVP solid dispersion were significantly improved compared with that of daidzein API.The cumulative dissolution of solid dispersion with mass ratio of 1∶6 within 30 minutes was up to 87.8%,equivalent to six times of API. The in vitro drug release kinetics were fitted mathematically to Korsemeyer-Peppas model. Conclusion Solid dispersion with PVP K30 as carrier could significantly improve dissolution rate of daidzein.

Objective To investigate the location,fine structure of melanocytes in human fetal scalp hair follicles.Methods The scalp with hair follicles was obtained from a dead fetus of 6 months of age,and divided into two parts.One part was embedded in paraffin,tissue sections were prepared with a width of 7 μm and stained with NKI/beteb,monoclonal antibodies to HMB-45,tyrosinase and tyrosinase-related protein 1(TRP1),respectively.The other part with hair follicles was treated with collagenase type Ⅱ 0.1 g/L and trypsin,then,cell suspension was collected and cultured.After 14-day culture,follicle melanocyte cells (FMC)were separated from keratinocytes by differential trypsinization,and fibroblasts were removed with geneticin.Following three times of pure passage,FMC were seeded and fixed on mica for scanning electron microscopy(SEM)and atomic force microscope(AFM)scanning.Results Histopathological examination showed that NKI/beteb positive cells located at the outer root sheath of human hair follicles,and these cells stained negatively for HMB-45,tyrosinase and TRP1 antibodies.However,in the hair bulb,lots of cells expressed HMB-45,tyrosinase and TRP1 antigens.After fibroblasts and keratinocytes were removed,two kinds of melanocytes remained in the culture:one was small in number and showed abundant melanin,which was lost after subsequent passage;the othgr was large in number and had no melanin initially,but proliferated very rapidly.After three passages,almost all the melanocytes were positive for NKI/beteb.As SEM and AFM showed,most cultured melanocytes appeared fusiform with two(rarely three)dendrites,and the cell body was round or oval with a few melanosomes scattered in but no clear secondary branches on the dendrites.Conclusions The melanocytes in outer root sheath of hair follicles from the fetal scalp are presumed as melanocyte stem cells or their progenies.In vitro,these cells proliferate very rapidly during early phases,but the morphology and function of them still remain immature,which is unfavorable for melanosome transport.

ObjectiveTo study the dose and time effects of X-ray radiation on the expression of Pokemon gene and protein in human lung adenocarcinoma cell line A549.MethodsA549 cells was exposed to different doses of X-ray (2,4,6 and 8 Gy),and the expression of Pokemon mRNA and protein of the cells was detected by using Quantitative real-time PCR and western-blotting at 2,4,8,12,24,and 48 h after irradiation. 3-( 4,5-Dimethylthiazol-2-yl )-2,5-diphenyltetrazoliumbromidewasused to detectthe proliferation of A549 cells at 1,2,3,4,and 5 d after 2 Gy X-ray irradiation.The mock treated A549 cells were used as the control.ResultsThe expression of Pokemon mRNA trended to decrease after irradiated with 4,6 and 8 Gy in the earlier period and increased in the later period with statistical difference at the most time points (t =3.40 -154.76,P =0.000 -0.041 ).The expression of Pokemon protein trended to increase and reached the peak at 8 h after irradiated of 2,4,6 and 8 Gy with statistical difference at the most time points ( t =4.18 - 89.64,P =0.000 - 0.039).Compared with the control,the proliferation of A549 cells was significantly inhibited during 3 to 5 d after irradiation of 2 Gy ( t =2.34 - 18.19,P =0.000 -0.040).ConclusionsX-ray irradiation may increase the expression of Pokemon mRNA and protein in A549 cells,which might be correlated with radiation-resistance of A549 cells.

Objective: To observe the clinical efficacy of combined electroacupuncture and nerve growth factor (NGF) injection at acupoints in the treatment of common fibular nerve paralysis and provide evidences for integrative Chinese & western medicine against diabetic peripheral neuropathy (DPN). Methods: Forty subjects were randomized into two groups and NGF injection; and control group was given herbal suffocation, oral Dibazol and compound vitamin B and Mecobalamin Injection. The clinical symptoms and nerve conduction velocity were observed and compared. Results: The cure rate was higher in treatment group than in control group (P<0.05); after treatment, the nerve conduction velocity was improved in both groups (P<0.01), with a significant improvement in treatment group than in control group (P<0.01). Conclusion: Combined electro-acupuncture and NGF injection at acupoints is quite effective in the treatment of common fibular nerve paralysis.

Objective To analyze the nursing interventions of two kinds of percutaneous nephrolithotomy (PCNL),so that we can provide personalized service for patients with PCNL and improved quality of nursing. Methods 140 cases of patients undergoing PCNL were chosen from January 2010 to January 2012.70 of them received standard PCNL,another 70 cases were given tubeless PCNL.The same nursing method was given before the operation,and personalized nursing was given according to difference in operation method.A self-designed questionnaire was conducted for satisfaction degree with nursing service of all patients on discharge. Results Satisfaction degree with psychological care,catheter nursing and complication nursing of tubeless PCNL was higher than standard PCNL. Conclusions Two methods of PCNL have become conventional therapy for upper urinary calculus,and careful nursing is very important,especially for tubeless PCNL.

Objective To evaluate the effect of family interventions on the prevention of falls in elderly hypertensive patients. Methods One hundred elderly hypertensive patients were divided into the experiment group and the control group in equal number. The control group returned for regular visits after discharge while the experiment group received the family intervention including cognitive,psychological,behavioral and environmental intervention.The two groups were compared in terms of fall rate and degree of injury.Results The incidence of falls in the experiment group was significantly lower than that of the control group,the incidence of soft tissue injury after a fall in the experiment group was significantly lower than that of the control group(both P<0.05).Conclusion Family intervention is effective in prevention of falls in elderly hypertensive patients for it may reduce the incidence of falls and the degree of fall injuries.

Objective: Duchenne and Becker muscular dystrophy (DMD/BMD) is an X-linked lethal recessive disease caused by mutations in the dystrophy gene. There is no efficient treatment for this serious and disabling disease. We established a combination method to detect carriers and perform prenatal diagnosis. Methods: In our study, from 1994 to 2005, using a different combination of 5 methods, including SRY gene amplification, multiplex PCR, multiplex Fluorescence PCR capillary electrophoresis, multiplex ligation-dependent probe amplification (MLPA) and linkage analysis of short tandem repeats (STR), 36 prenatal diagnosis were performed for pregnancies at risk of having a DMD/BMD baby through amniocentesis. Results: Fourteen out of 21 male fetuses were found to be affected and respective pregnancies were terminated. A combined diagnostic rate of 83% was achieved for 30 cases with deletions, duplications, and non-deletion mutations after tested by more than one method. Conclusion: Using a combined method, we can diagnoses patients and carriers in DMD families, and perform prenatal diagnosis for the risk fetus. MLPA provides a simple, rapid and accurate method for deletions and duplications of all the 79 DMD exons. MLPA method for DMD diagnosis is the first report in our country.

Objective To assess the association of Haptoglobin(Hp) polymorphism with acute coronary syndrome(ACS) in Chinese. Method A total of 112 patients with ACS including 57 patients with acute myocardial infarction and 55 patients with unstable angina pectoris confirmed with angiography and 121healthy controls were recruited in this study. Polymerase chain reaction (PCR) method was utilized to genotype Hpl and Hp2 alleles and genotype frequencies in cases and controls were compared. All polymorphisms were test of Hardy-Weinberg equilibrium in both groups separately. The differences of genotypes and alleles between two groups were analyzed with x2 test. The association between Hp polymorphism and the risk of ACS was estimated by odds ratio (OR) and their 95% confidence intervals (95% CI), and the comprehensive evaluation of the factors associated with ACS were determined by using multivariate logistic regression analysis. P ＜0.05 was considered to be statistically significant. Results The frequency of Hp2-2 genotype was significantly higher in ACSs than in controls (0. 571 vs. 0. 355, P = 0. 001; OR = 2. 419, 95% CI:1. 427 ～4. 100), multivariate Logistic regression analysis indicates that Hp2-2 genotype is an independent risk factor to ACS (P = 0.002; OR = 2.557,95% CI: 1. 392 - 4.637). Similarly, the Hp2 allele frequency in ACS groups was significantly higher than that in the control subjects (0. 759 vs. 0. 616, P =0.001; OR = 1. 965,95% CI 1. 316 ～2. 934). Conclusion The Hp2-2 genotype is associated with ACS in Chinese. Hp2-2 genotype may be an independent risk factor to ACS, and Hp2 allele may be a genetic susceptibility factor to ACS in Chinese.

Purpose To explore the value of window width adjustment in diagnosing the invasiveness of lung adenocarcinoma manifested as ground glass opacities on high-resolution CT, and to provide guidance for the diagnosis of lung adenocarcinoma in different types. Materials and Methods The preoperative CT data of 102 preinvasive lesions and 107 invasive lesions of lung adenocarcinoma were analyzed retrospectively. Among 102 cases of preinvasive lesions, 25 were atypical adenomatous hyperplasia (AAH), 77 were adenocarcinoma in situ (AIS). Among 107 cases of invasive lesions, 78 were minimally invasive adenocarcinoma (MIA), and 29 were invasive adenocarcinoma. The lesions were ground glass opacity (GGO) on lung window while were invisible on mediastinal window. The window width was adjusted constantly until the lesions were invisible with the fixed mediastinal window level (40 HU). When the lesions became invisible, the window width was compared and the best cut-off was found on ROC curve in the two groups. Results The window width of lesions between preinvasive lesions and invasive lesions was different (Z= - 6.203, P<0.05). Window width was a good indicator for the invasiveness of pulmonary adenocarcinoma (area under the ROC was 0.748, P<0.05), and the window width of 1303 HU was the best cut-off for preinvasive lesions and invasive lesions (sensitivity was 56.9%, specificity was 86.0%. Conclusion Window width may be useful for the diagnosis of the invasiveness of the GGO of lung adenocarcinoma on HRCT. The lesion disappearing when the window width is larger than 1303 HU is more likely to be preinvasive; while the lesion disappearing when the window width is smaller than 1303 HU is more likely to be an invasive one.

Objective To investigate the therapeutic effect of Jianpi Yiqi, Bushen Fenjing combined with oxaliplatin+CF/5-FU on colorectal cancer.MethodsEighty patients with colorectal cancer who were treated in our hospital from January 2014 to December 2015 were randomly divided into observation group(40cases) and control group (40cases).The control group was given oxaliplatin+CF/5-FU treatment, the observation group in the control group based on the application of Spleen Qi, Bushen fill essence treatment, observed before and after treatment of two groups of serum tumor markers, clinical symptoms and living conditions, changes, record adverse reactions.ResultsThe observation effect of 82.50% was significantly higher than that of the control group (62.50%).The QOL score (37.8±5.6) was significantly higher than that of the control group (33.5±3.1) and the adverse reaction rate was 30.00% (P<0.05).The difference between the two groups was significant (P<0.05).ConclusionThe effect of invigorating spleen qi and tonifying siren solution combined with oxaliplatin+CF/5-FU on colorectal cancer can improve the clinical symptoms and improve the quality of life of patients.