Background:Chinese medicine is widely applied in Asian and Western countries for its outstanding therapeutic effect,but there are still unsolved problems such as unclear active ingredients and pharmacological effects....Background:Chinese medicine is widely applied in Asian and Western countries for its outstanding therapeutic effect,but there are still unsolved problems such as unclear active ingredients and pharmacological effects.The application of nano/microparticle technology in Chinese medicine may become a promising strategy to solve this problem in the near future(provided that more efforts are made to in-depth exploration).In this work,a comprehensive analysis of the field was carried out from a bibliometrics perspective,and further the publishing trends and research hotspots were figured out.Methods:The articles or reviews from 2000 to 2020 were retrieved in the database of Web of Science Core Collection.The documents were processed by Clarivate Analytic,Visualization of Similarities viewer,Statistical Analysis Toolkit for Informetrics and bibliometric online platform,and the data were visualized.Finally,a bibliometric summary,citation analysis results and research trends were described.Results:A bibliometric analysis of 773 articles of interest showed that research in this field had continued to grow in recent years,with a high degree of interdisciplinary integration.Secondly,this field attached great importance to the quantitative analysis of Chinese medicine combined with nano/micro particle technology.Chinese medicine,nanoparticles and liposomes were the most accessed keywords.China was the main contributing country,and the top-10 contributing organizations were all located in China.Co-authorship was a common phenomenon in this field.Conclusion:The published literature on the application of nano/micro particle technology in Chinese medicine was summarized.The results suggested that bibliometric analysis could predict possible directions for future research in this field.展开更多
The present study aimed to prepare a chemically and physically stable formulation of doxycycline(Doxy)in an in situ thermally sensitive hydrogel for ophthalmic delivery.An inclusion complex of Doxy and hydroxypropyl-b...The present study aimed to prepare a chemically and physically stable formulation of doxycycline(Doxy)in an in situ thermally sensitive hydrogel for ophthalmic delivery.An inclusion complex of Doxy and hydroxypropyl-b-cyclodextrin(HP-b-CD)was first developed to increase the stability of Doxy in aqueous solution.The physical characteristics(phase solubility profiles,thermal analysis,X-ray powder diffractograms and infrared spectra)of the Doxy-HP-b-CD inclusion complex indicated the formation of a stable 1:1 complex.Poloxamers P407(16–22%)and P188(0–5%)were mixed to obtain a hydrogel with an appropriate gelation temperature for opthalmic use.Formulation of the inclusion complex in the poloxamer hydrogel exhibited a suitable gelation temperature(33.3℃)after dilution with simulated tear fluid(Gel:STF=40:7,v/v).The release of Doxy from the poloxamer hydrogel followed a zero order equation suggesting it occurs through corrosion of the poloxamer hydrogel.Stability studies demonstrated that the inclusion of Doxy by HP-b-CD markedly improved its stability in aqueous solution both at 8 and 401C.This formulation of a doxycycline-HP-b-CD inclusion complex in an in situ thermally sensitive poloxamer hydrogel represents a potentially effective ophthalmic Doxy delivery system.展开更多
基金the financial supports from the Fundamental Research Funds for the Central Universities(No.21621012)the National Natural Science Foundation of China(No.82104070).
文摘Background:Chinese medicine is widely applied in Asian and Western countries for its outstanding therapeutic effect,but there are still unsolved problems such as unclear active ingredients and pharmacological effects.The application of nano/microparticle technology in Chinese medicine may become a promising strategy to solve this problem in the near future(provided that more efforts are made to in-depth exploration).In this work,a comprehensive analysis of the field was carried out from a bibliometrics perspective,and further the publishing trends and research hotspots were figured out.Methods:The articles or reviews from 2000 to 2020 were retrieved in the database of Web of Science Core Collection.The documents were processed by Clarivate Analytic,Visualization of Similarities viewer,Statistical Analysis Toolkit for Informetrics and bibliometric online platform,and the data were visualized.Finally,a bibliometric summary,citation analysis results and research trends were described.Results:A bibliometric analysis of 773 articles of interest showed that research in this field had continued to grow in recent years,with a high degree of interdisciplinary integration.Secondly,this field attached great importance to the quantitative analysis of Chinese medicine combined with nano/micro particle technology.Chinese medicine,nanoparticles and liposomes were the most accessed keywords.China was the main contributing country,and the top-10 contributing organizations were all located in China.Co-authorship was a common phenomenon in this field.Conclusion:The published literature on the application of nano/micro particle technology in Chinese medicine was summarized.The results suggested that bibliometric analysis could predict possible directions for future research in this field.
文摘The present study aimed to prepare a chemically and physically stable formulation of doxycycline(Doxy)in an in situ thermally sensitive hydrogel for ophthalmic delivery.An inclusion complex of Doxy and hydroxypropyl-b-cyclodextrin(HP-b-CD)was first developed to increase the stability of Doxy in aqueous solution.The physical characteristics(phase solubility profiles,thermal analysis,X-ray powder diffractograms and infrared spectra)of the Doxy-HP-b-CD inclusion complex indicated the formation of a stable 1:1 complex.Poloxamers P407(16–22%)and P188(0–5%)were mixed to obtain a hydrogel with an appropriate gelation temperature for opthalmic use.Formulation of the inclusion complex in the poloxamer hydrogel exhibited a suitable gelation temperature(33.3℃)after dilution with simulated tear fluid(Gel:STF=40:7,v/v).The release of Doxy from the poloxamer hydrogel followed a zero order equation suggesting it occurs through corrosion of the poloxamer hydrogel.Stability studies demonstrated that the inclusion of Doxy by HP-b-CD markedly improved its stability in aqueous solution both at 8 and 401C.This formulation of a doxycycline-HP-b-CD inclusion complex in an in situ thermally sensitive poloxamer hydrogel represents a potentially effective ophthalmic Doxy delivery system.
