Objective To investigate the permeability changes of prostate cancer cells membrane under low intensity ultrasound in vitro.Methods The culture of monolayer adherent LNCaP prostate cancer cells in six-well plate was exposed to continuous ultrasound at frequency of 1 MHz.The cells membrane permeability (stained with Calcein)and cells viability(stained with PI)were evaluated by fluorescent microscope (FM) and cells morphological changes were evaluated by scanning electron microscope (SEM) under ultrasound with acoustic intensity of 160 mW/cm2 for 5 s.The rate of cells with increased cells membrane permeability as function of acoustic intensity (80 mW/cm2,120 mW/cm2 and 160 mW/cm2,for 5 s) and exposure duration (5 s,10 s and 15 s,acoustic intensity of 120 mW/cm2) was evaluated by flow cytometry.ResultsAfter low intensity of ultrasound,the cells with increased cell membrane permeability could be clearly shown with Calcein uptake under FM while no cell showed Calcein uptake in the control group.The SEM showed less microvilli on the cells after low intensity of ultrasound exposure and few cells showed holes on the cell membrane.The rate of cells with increased membrane permeability increased with acoustic intensity and exposure duration.Conclusion Low intensity ultrasound alone could increase membrane permeability of prostate cancer cells and cells with increased membrane permeability showed surface plane,uncommon holes on the cells membrane.The rate of cells with increased membrane permeability positively correlated with acoustic intensity and exposure duration.

The formulation for sustained release tablet of Epinedium component was selected and the evaluation equation of in vitro release was established. The liquidity of component was improved with the help of colloidal silica aided by spray drying, which would be the main drug in the sustained release tablets. Dissolution was selected as an evaluation index to investigate skeletal material type, fillers, impact porogen, lubricants and other materials on the quality of sustained release tablet. The sustained release tablets were prepared by dry compression. Formulation of sustained release preparations was main drug 35%, HPMC K(4M) 20% and HPMC K(15M) 10% as skeleton material, MCC 31% as filler, PEG6000 2% as porogen and magnesium stearate 2% as lubricant. The sustained release tablets released up to 80% in 8 h. The zero order equation, primary equation and Higuchi equation could simulate the release characteristics of sustained release tablets in vitro, the correlation coefficients r were larger than 0.96. The primary equation was most similar in vitro release characteristics and its correlation coefficient r was 0.9950. The preparation method is simple and the results of formulation selection are reliable. It can be used to guide the production of Epimedium component sustained release preparations.
Chemistry, Pharmaceutical ; methods ; Delayed-Action Preparations ; chemistry ; Drugs, Chinese Herbal ; chemistry ; Epimedium ; chemistry ; Kinetics ; Tablets ; chemistry

In this paper, the action of suet oil in the preparation of self-assembled micelles of the active flavonoids in Epimedium in the simulated human environment was researched. Twelve suet oil samples were collected from different growing areas and different positions of sheep or goat to simulate the formation of micelles. Then the effects of the fatty acids in suet oil on the preparation of self-assembled micelles were studied furthermore. The results showed that the micelles had a dispersed state and spherical smooth surface. To compare the diameter, potential, encapsulation efficiency and drug loading of the 12 batches micelles, the micelles prepared by the suet oil from Qinghai were more stable and had a higher encapsulation efficiency. The fatty acids in suet oil could promote the formation of self-assembled micelles, but the whole suet oil had a better effect. Above all the study, we confirmed that the suet oil promoted the formation of self-assembled micelles of the flavonoids in Epimedium, it laid foundation for further research about increasing the efficacy of Epimedium and improved the absorption of the active flavonoids in Epimedium.
Animals ; Chemistry, Pharmaceutical ; methods ; China ; Drug Carriers ; chemistry ; Electric Conductivity ; Epimedium ; chemistry ; growth & development ; Fatty Acids ; chemistry ; Flavonoids ; chemistry ; Geography ; Goats ; Humans ; Micelles ; Oils ; chemistry ; Sheep

Humans ; Kidney ; pathology ; Kidney Neoplasms ; pathology ; Neuroectodermal Tumors, Primitive ; pathology

To evaluate the properties of solidifying volatile oil with graphene oxide, clove oil and zedoary turmeric oil were solidified by graphene oxide. The amount of graphene oxide was optimized with the eugenol yield and curcumol yield as criteria. Curing powder was characterized by differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The effects of graphene oxide on dissolution in vitro and thermal stability of active components were studied. The optimum solidification ratio of graphene oxide to volatile oil was 1:1. Dissolution rate of active components had rare influence while their thermal stability improved after volatile oil was solidified. Solidifying herbal volatile oil with graphene oxide deserves further study.
Calorimetry, Differential Scanning ; Clove Oil ; chemistry ; Curcuma ; chemistry ; Eugenol ; Graphite ; chemistry ; Microscopy, Electron, Scanning ; Oils, Volatile ; chemistry ; Oxides ; chemistry ; Plant Extracts ; chemistry ; Powders ; Sesquiterpenes

In order to evaluate the characteristics of the spray drying of total flavonoids of Epimedium extracts assisted with soybean polysaccharide, a certain percentage of soybean polysaccharide or polyvidone were added to the total flavonoids of Epimedium extract to conduct the spray drying. The effect of soybean polysaccharides against the wall sticking effect of the spray drying was detected, as well as the powder property of total flavonoids of Epimedium spray drying powder and the dissolution in vitro behavior of the effective component. Compared with the total flavonoids of Epimedium spray drying powder, soybean polysaccharide revealed a significant anti-wall sticking effect. The spray drying power which had no notable change in the grain size made a increase in the fluidity, improvement in the moisture absorption and remarkable rise in the dissolution in vitro behavior. It was worth further studying the application of soybean polysaccharide in spray drying power of traditional Chinese medicine.
Epimedium ; chemistry ; Flavonoids ; analysis ; Particle Size ; Polysaccharides ; chemistry ; Powders ; Soybeans ; chemistry

Objective To compare the curative effect of high ligation+exfoliation and subfascial endoscopic perforator surgery(SEPS)for superficial varicose veins in calf+invagination spot-striping surgery in great venous varicosity.Methods Study group(42 patients)accepted SEPS+invagination spot-striping surgery and control group (42 patients)accepted traditional surgeries.Operation duration,bleeding volume in operation,the time of beginning movement away from bed after operation,hospitalization duration,the degree of pain,the scar,the recrudescence af- ter operation and the instance of the ulcer heals of two groups were compared.Results Operation duration,bleeding volume in operation,the time of begin movement away from bed after operation and hospitalization durations of study group were significantly lower than those of control group(P0.05).All of the patients in study group recovered without severe syndromes such as venous thrombosis,skin necrosis,lower limb functional disorder etc.They had no recrudesce after 4～16 months and were satisfied with the curative effect.Con- elusions The clinical curative effect of SEPS+invagination spot-striping surgery in great venous varicosity is superi- or to that of traditional operation and it has the advantages such as minor wound,few scars,light pains,short hospi- talization duration,without recrudescence,the ulcer heals quickly and so on.

Clove oil and turmeric oil were absorbed by mesoporous carbon. The absorption ratio of mesoporous carbon to volatile oil was optimized with the eugenol yield and curcumol yield as criteria Curing powder was characterized by scanning electron microscopy (SEM) and differential scanning calorietry (DSC). The effects of mesoporous carbon on dissolution in vitro and thermal stability of active components were studied. They reached high adsorption rate when the absorption ratio of mesoporous carbon to volatile oil was 1:1. When volatile oil was absorbed, dissolution rate of active components had a little improvement and their thermal stability improved after volatile oil was absorbed by the loss rate decreasing more than 50%. Absorbing herbal volatile oil with mesoporous carbon deserves further studying.
Adsorption ; Carbon ; chemistry ; Drug Stability ; Microscopy, Electron, Scanning ; methods ; Oils, Volatile ; chemistry ; Sesquiterpenes ; chemistry

Oleanolic acid-precipitated calcium carbonate solid dispersion was prepared by using solvent evaporation method. The microscopic structure and physicochemical properties of solid dispersion were analyzed using differential scanning calorimetry and scanning electron microscopy (SEM). And its in vitro release also was investigated. The properties of the precipitated calcium carbonate was studied which was as a carrier of oleanolic acid solid dispersion. Differential scanning calorimetry analysis suggested that oleanolic acid may be present in solid dispersion as amorphous substance. The in vitro release determination results of oleanolic acid-precipitated calcium carbonate (1: 5) solid dispersion showed accumulated dissolution rate of.oleanolic acid was up to 90% at 45 min. Accelerating experiment showed that content and in vitro dissolution of oleanolic acid solid dispersion did not change after storing over 6 months. The results indicated that in vitro dissolution of oleanolic acid was improved greatly by the solid dispersion with precipitated calcium carbonate as a carrier. The solid dispersion is a stabilizing system which has actual applied value.
Calcium Carbonate ; chemistry ; Calorimetry, Differential Scanning ; Chemistry, Pharmaceutical ; Drug Carriers ; chemistry ; Drug Stability ; Microscopy, Electron, Scanning ; Oleanolic Acid ; chemistry ; Plant Extracts ; chemistry ; Solubility

In order to evaluate the characteristic of porous starch (PS) as the solid dispersions carrier of the total Epimedium flavonoids (TEF), the PS was used. The dissolution of icariin was selected as an indicator to analyze the differences of dissolution between TEF and its solid dispersion. TEF was characterized by scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and X-ray powder diffraction (XRD). Solid dispersion was irregular block and no powder characteristics of TEF and PS could be seen in SEM, DSC and XRD analysis suggested that TEF may be present in solid dispersion as amorphous substance. The dissolution rate of icariin has been improved significantly when the proportion of TEF and PS was 1:2. PS as a traditional solid dispersion carrier is worthy of further study.
Calorimetry, Differential Scanning ; Chemistry, Pharmaceutical ; Drugs, Chinese Herbal ; chemistry ; Epimedium ; chemistry ; Flavonoids ; chemistry ; Porosity ; Solubility ; Starch ; chemistry ; X-Ray Diffraction