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Copyright of Journal of Shenyang Pharmaceutical University is the property of Shenyang Pharmaceutical University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shenyang Pharmaceutical University is the property of Shenyang Pharmaceutical University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to improve the clarity of the development of the markers in the digestive tract，the formulation and preparation process of high drug loading pellets of barium sulfate were explored and optimized. Firstly, extrusion-spheronization process was used to prepare the barium sulfate-loaded pellet cores with barium sulfate as a model drug. Secondly, the powder layering technique was applied to prepare the barium sulfate pellets by coating the core with barium slfate drug layer. Finally, the influencing factors of formulation and process on the properties of the pellet cores or pellets were investigated, and the process and formulation parameters were optimized by single factor test and orthogonal test based on the index of roundness, friability, and yield. The results show that the obtained barium sulfate-loaded pellet cores have possessed high roundness, the preparation method of the pellet cores is stable, the drug-loading rate is up to 80%, and the yield of 550~700 μm (mesh of 24～30) is 8533%.The content of barium sulfate in the powder of powder layering method is about 90%, and the yield of 830~1 180 μm (mesh of 14～20) is 9033%. The prepared barium sulfate pellets are white spheres with uniform particle size distribution, low friability, high density, smooth surface, and better tensile strength, which can act as intermediate products to be coated in the following step. The barium sulfate pellets prepared by this method have the characteristic of high drug-loaded and achieve the desired experimental purpose, which can provide useful information for further study and utilization of barium sulfate pellets and a new choice for the design of radioopaque markers.

Copyright of Journal of Hebei University of Science & Technology is the property of Hebei University of Science & Technology, Journal of Hebei University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Hebei University of Science & Technology is the property of Hebei University of Science & Technology, Journal of Hebei University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to improve the dissolution properties of albendazole and solve the problem of dysphagia caused by conventional tablets in patients,the prescription and preparation process of albendazole dispersible tablets were explored based on the solubilization effect.The effects of adding surfactants and preparing inclusion compounds on dissolution were investigated to screen the method of increasing the solubility of albendazole.Adhesives,disintegrants,solubilizers,and lubricants were screened by single factor experiment with compressibility,hardness,disintegrating time,and dissolution as indicators.The formulation and preparation process of albendazole dispersible tablets were optimized by orthogonal test.Three batches of albendazole dispersible tablets were prepared by the optimal prescription and process,the qualities were evaluated in vitro,and the content and dissolution were measured by UV-spectrophotometry.The results show that adding mixed surfactants of sodium dodecyl sulfate(SDS) and Tween 80 can assist dissolution of albendazole in water.The optimal prescription is as follows:3% of SDS,16% of PVPP (with an internal and external ratio of 1∶1),3% of Tween 80,3% of HPMC and 1% of Magnesium Stearate.The albendazole dispersible tablets were prepared with wet granulation.Different batches of albendazole dispersible tablets completely disintegrated within 122 s,the accumulated dissolution of albendazole dispersible tablets within 45 minutes was more than 80%,which met the requirements of Pharmacopoeia of the People's Republic of China(2020).The formulation of albendazole dispersible tablets is reasonable,the preparation process is feasible and the quality is good in vitro,which provides research ideas and a theoretical basis for improving the bioavailability of oral dosage forms of biopharmaceutical classification system (BCS) class Ⅱ compounds.

In order to enhance the aqueous solubility and stability of etoposide preparation,the central composite design-response surface method was used to optimize the prescription technology of etoposide nano-mixed micelles (ETP mPEG-PLA/P123).Based on the results of single factor test,central composite design-response surface method of three factors and five levels was carried out to optimize the prescription technology with drug dosage,the mass ratio of mPEG-PLA and hydration volume as independent variables,and the entrapment efficiency,drug loading and particle size as dependent variables.The critical micelle concentration (CMC) was determined by fluorescence probe method,and the physicochemical properties and release behavior of the prepared micelle preparations were evaluated.The results showed that the optimal prescription of ETP mPEG-PLA/P123 micelle preparation was that mPEG-PLA∶P123=38∶62,the drug dosage was 5 mg,and the hydration volume was 6 mL.After optimization,the entrapment efficiency and drug loading were 874% and 419%,the particle size was 1156 nm,PDI was 0216,and Zeta potential was -163 mV.The CMC value was 17×10-3 g/L,so mPEG-PLA/P123 micelles had high stability.In vitro release experiments,etoposide could be released from micelles slowly and continuously,up to 80% within 48 h.The optimized ETP mPEG-PLA/P123 nano-mixed micelles were able to enormously improve the aqueous solubility of etoposide,and the micelle preparation had good stability and a certain slow-release effect.The results of this study could provide theoretical guidance for further broadening the range of application of new etoposide preparations.

In order to avoid the irritation of metformin hydrochloride to the stomach and realize its release in the intestine, with metformin hydrochloride as the main drug and chitosan/sodium alginate as the composite support, the optimal formulation and preparation technology of metformin hydrochloride loaded pH-sensitive hydrogel microspheres were selected, and the pH-sensitivity and in vitro drug release characteristics were investigated. The formulation and process were optimized by single factor test and orthogonal test. The morphology was characterized by SEM. The entrapment efficiency and drug-loaded amount were determined by UV. The release degree was studied by rotating basket method. The results show that the optimized prescription is as following: chitosan and sodium alginate with a total concentration of 2%(mass-volume ratio), mass ratio of sodium alginate to chitosan =1∶1, mass ratio of drug to sodium alginate=2∶5, and 3.5% CaCl2(mass-volume ratio). The cumulative release rate is less than 4% in artificial gastric juice within 6 h, and up to 96.4% in artificial intestinal juice within 6 h. The formulation and process are stable and reliable, and the hydrogel microspheres have high mechanical strength, good biodegradability and stability. So it is a new metformin hydrochloride delivery system.

Copyright of Journal of Hebei University of Science & Technology is the property of Hebei University of Science & Technology, Journal of Hebei University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Hebei University of Science & Technology is the property of Hebei University of Science & Technology, Journal of Hebei University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Hebei University of Science & Technology is the property of Hebei University of Science & Technology, Journal of Hebei University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Sciencepaper is the property of China Sciencepaper and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Sciencepaper is the property of China Sciencepaper and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Pharmaceutics is a comprehensive course with strong practicalness and operability, it requires students to integrate knowledge and skills to complete drug formulation design, manufacturing processes optimization, quality control, and rational application. Based on the current pharmaceutical experimental teaching status, the Pharmaceutical Experimental Teaching Center in East China University of Science and Technology puts forward ideas about innovating experimental teaching by modifying teaching methods, and combining scientific research with experimental teaching class. The reform can contribute to students' research capability, and strengthen the cooperation with enterprise. Thus, it realizes problem-based learning, integrates experimental teaching with scientific research and practical production, and strengthens the cultivation of the experimental ability of undergraduates. [ABSTRACT FROM AUTHOR]

Puerarin is a naturally occurring isoflavone C-glycoside,isolated from the root of Pueraria lobata,which has attracted extensive attention in the medical circles because of its various pharmacological effects,such as vasodilation,cardioprotection,neuroprotection,antioxidant,anticancer,anti-inflammation,alleviating pain,promoting bone formation,inhibiting alcohol intake,and attenuating insulin resistance. However,its low oral bioavailability has limited its clinical application. This review gives a comprehensive summary of the researches on physicochemical properties,pharmacokinetics( absorption,distribution,metabolism and excretion,pharmacokinetic parameters) in oral administration,and pharmaceutics research strategies of puerarin in recent years,and the in vivo behavior difference between multicomponent and single component environment was also summarized. The reasons( low water solubility,poor membrane permeability,short half-life,inhibition of P-gp efflux and first-pass metabolic effects of intestinal enzymes,etc.) for low bioavailability were concluded and the idea that multicomponent enviroment would affect the bioavailability was clarified. The aim of this review is to provide literature basis for the development of new dosage forms and new technologies for multivariate compound drug delivery system to improve the bioavailability of oral puerarin,and to propose ways to improve the bioavailability of BCS Ⅳ drugs derived from traditional Chinese medicine by fully enlarging the synergistic effect of multi-components or reasonably using the inhibitory effect between components.