Background:This study aims to explore the therapeutic effects of the Qi Teng Mai Ning recipe on ischemic stroke and vascular cognitive impairment through its potential to modulate cellular autophagy,with a focus on id...Background:This study aims to explore the therapeutic effects of the Qi Teng Mai Ning recipe on ischemic stroke and vascular cognitive impairment through its potential to modulate cellular autophagy,with a focus on identifying its active ingredients and their target proteins.Methods:The study began with the identification of active ingredients in the Qi Teng Mai Ning recipe.It proceeded to screen the gene expression omnibus database for ischemic stroke and vascular cognitive impairment-associated differentially expressed mRNAs and to identify cellular autophagy-related proteins via the Human Autophagy Database.These proteins were annotated with Gene Ontology and Kyoto Encyclopedia of Genes and Genomes functions and subjected to molecular docking with the recipe’s core active ingredients.In vitro cell experiments were conducted on hypoxic HT22 cells,involving CCK8 assay,lentiviral transfection to silence autophagy related 9B(ATG9B),immunofluorescence staining,and qPCR validation to investigate the effects of the recipe on autophagy.Results:The analysis identified 104 active ingredients targeting 408 proteins and forming a complex ingredient-target network.Intersecting 55 ischemic stroke-related and 909 vascular cognitive impairment-related differentially expressed mRNAs revealed 14 co-expressed mRNAs.Molecular docking showed quercetin,kaempferol,myrcene,and conferone as key ingredients targeting autophagy-related proteins.Cellular experiments indicated that the recipe significantly enhanced cell viability under hypoxic conditions,reduced apoptosis,and modulated the expression of autophagy-related factors,thereby decreasing apoptosis rates in HT22 cells.Conclusion:The Qi Teng Mai Ning recipe offers protective effects against ischemic stroke and vascular cognitive impairment by modulating autophagy-related proteins.Its efficacy highlights the potential of traditional Chinese medicine in treating these conditions,though further research is needed to fully understand its mechanisms and clinical applications.展开更多
More studies have indicated that polysaccharide sulfate has anti-coagulant activity.Now,heparin is the most popular anticoagulant used in clinic,however,its side effects have also caused highly concern.It is still und...More studies have indicated that polysaccharide sulfate has anti-coagulant activity.Now,heparin is the most popular anticoagulant used in clinic,however,its side effects have also caused highly concern.It is still under intensive investigations to synthesize effective safe polysaccharide sulfate as heparin substitute.We extracted water-soluble polysaccharide from fermented mycelium of edible polyporus albicans（Imaz.） teng,and got the water-soluble polyporus albicans teng sulfate（PATS） by modifying the water-solubility polyose with the method of chlorosulfonic acid-pyridine.The anti-coagulant assay of PATS in vitro towards normal human plasma indicates its remarkable anticoagulant activity,while the dose could be as low as 5 mg/L for anticoagulation.The anti-coagulant effect was equivalent to that of heparin about 150 U when the concentration of PATS was 10 mg/L.The study on anti-coagulation mechanism suggests that PATS got involved in the intrinsic pathway.The anti-coagulation activity of PATS was due to the inhibition of the coagulation factors IIa and Xa activities mediated by antithrombin Ⅲ（ATIII）.The anti-coagulation mechanism of PATS is absolutely identical to that of heparin.In conclusion,we suggest that PATS has the similar anti-coagulation characteristic to heparin,but with a better anti-coagulation effect.Meanwhile,derived from edible fungus-polysaccharide,PATS has more bio-safety advantage.Therefore,PATS has promising future to be developed and used as an ideal substitute for heparin in clinic.展开更多
Raindrops contain abundant renewable energy including both kinetic energy and electrostatic energy,and how to effectively harvest it becomes a hot research topic.Recently,a triboelectric nanogenerator(TENG)using liqui...Raindrops contain abundant renewable energy including both kinetic energy and electrostatic energy,and how to effectively harvest it becomes a hot research topic.Recently,a triboelectric nanogenerator(TENG)using liquid-solid contact electrification has been demonstrated for achieving an ultra-high instantaneous power output.However,when harvesting the energy from the dense raindrops instead of a single droplet,a more rational structure to eliminate the mutual influence of individual generation units is needed for maximize the output.In this work,a“solar panel-like”bridge array generators(BAGs)is proposed.By adopting array lower electrodes(ALE)and bridge reflux structure(BRS),BAGs could minimize the sharp drop in the peak power output for large-scale energy harvesting devices.When the area of the raindrop energy harvesting device is 15×15 cm2,the peak power output of BAGs reached 200 W/m2,which is remarkable for paving a potential industrial approach for effective harvesting raindrop energy at a large scale.展开更多
Objecrive:To investigate the expression of TNF-αand NF-κB in the uterus of chronic pelvic inflammatory disease(CPID)model rats.Methods:40 female rats that adaptive fed for 5 days were randomly divided into normal gr...Objecrive:To investigate the expression of TNF-αand NF-κB in the uterus of chronic pelvic inflammatory disease(CPID)model rats.Methods:40 female rats that adaptive fed for 5 days were randomly divided into normal group,model group,high dose group,medium dose group and low dosegroup.In addition to the normal group:the rats in each group were made chronic pelvic inflammatory model by mechanical injuuy combined with implantation of bacteria.The rats in each group were administrated by gavage for 20days.After the last administration,the level of TNF-αand NF-κB in serum was measured by ELASA method.Results:(1)after the establishment of the model,the uterus of the chronic pelvic inflammatory model rats showed the pathological damage of chroic infilammation;the levels of lNF-αand NF-κB inserum were higher than those in the normal group,the difference was statistically significant(P<0.05).(2)After the drug intervention,the uterine tissue morphology of the rats in the Zhuang Yi Liu Fang Teng Fang Group was basically restored to normal,with only a small amount of inflammatory cell infiltration and other pathological changes;compared with the rats in the model group,the TNF-αin serum of the rats in each treatment group was lower,the difference was statistically significant(P<0.05).The expression of NF-κB in serum of each treatment group was lower fthan that of the model group(P<0.05).Conclusion:Zhuang Yi Liu Teng Fang can efectively improve the endometrial histomorphology of CPID model rats,and regulate the levels of TNF-αand NF-κB in the uterus of chronic pelvic inflammatory model rats.展开更多
The Teng people are an ethnic group who live in the boundary area of Tibet.For various reasons,the survey of ethnic minorities in China.conducted in the 1950s,excluded the Teng people. Nevertheless,the products,the li...The Teng people are an ethnic group who live in the boundary area of Tibet.For various reasons,the survey of ethnic minorities in China.conducted in the 1950s,excluded the Teng people. Nevertheless,the products,the lifestyle and even the culture of the Teng people are unique amongst ethnic Tibetan.Moinpa, and Lhopa.They are,therefore,named as the"Teng people".展开更多
Triboelectric nanogenerators(TENGS)represent a cutting-edge class of devices for energy conversion and self-powered sensing.The selection of appror priate triboelectric and conductive materials is critical in determin...Triboelectric nanogenerators(TENGS)represent a cutting-edge class of devices for energy conversion and self-powered sensing.The selection of appror priate triboelectric and conductive materials is critical in determining the performance of TENGS.In recent years,MXenes,particularly T,C,MXenes,have emerged as promising candidates for triboelectric/conductive materials in TENGS.To elucidate the multifaceted roles of MXenes,this review examines their applications from a materials science perspective.The applications are categorized into four types based on the functional layers of TENGS where MXenes are applied:(1)MXene films as conductive laye rs,(2)MXene films as triboelectric layers,(3)MXene nanosheets as fillers in polymer-based triboelectric layers,and(4)MXene films as charge trapping layers.The rationale and advantages of utilizi ng MXenes in each application are analyzed and elucidated.Owing to their unique combination of properties,including electronegativity,electrical conductivity,and flexibility,MXenes demonstrate remarkable versatility in all functional layers,either as pure films or composite films.Systematic analysis reveals that MXene composite films are particularly promising for various applications.This review represents the first comprehensive attempt to classify MXene applications in TENGS and articulate their inherent advantages,thereby providing a foundation for the design and development of high-performance MXene-based TENGS.展开更多
Portable power is an effective solution to realize self-powered sensors for wearable devices,promoting future sustainable development.Membrane-based triboelectric nanogenerators(M-TENGs)have emerged as a promising tec...Portable power is an effective solution to realize self-powered sensors for wearable devices,promoting future sustainable development.Membrane-based triboelectric nanogenerators(M-TENGs)have emerged as a promising technology for harvesting biomechanical energy from human motion owing to their advantages,such as simple structure,lightweight design,and efficient energy conversion.However,the poor durability,low adaptability,and un-washability of two-dimensional membrane materials have largely hindered their application in wearable electronics.In this study,we propose a sheath-core polyvinylidene fluoride(PVDF)/graphene(G)-carbon fiber(CF)yarn fabricated via conjugate electrospinning,comprising a commercial CF core and an electrospun graphene-doped PVDF sheath,which improves the fatigue resistance of electrospun nanofiber films under prolonged friction and keeps a high degree of freedom.The resulting electronic textile,woven with the large-scale electrospun PVDF/G-CF yarn,demonstrates a remarkable power density of 25.5 mW·m^(-2).The tight distribution of PVDF/G nanofibers on the textile surface ensures excellent softness,washability,and durability.Furthermore,the electrospun PVDF/G-CF textile exhibits significant potential in pressure sensing,self-powered operation,and motion detection,making it highly suitable for wearable electronics applications.展开更多
Although traditional soft magnetic materials have been investigated to improve triboelectric nanogenerator(TENG)performance,their electrical output performance remains insufficient.Magnetic high-entropy alloys(HEAs),a...Although traditional soft magnetic materials have been investigated to improve triboelectric nanogenerator(TENG)performance,their electrical output performance remains insufficient.Magnetic high-entropy alloys(HEAs),a new type of magnetic functional material,possess excellent mechanical and magnetic properties.However,the electrical characteristics of TENGs based on magnetic HEAs remain unexplored.Therefore,a TENG based on polyvinylidene fluoride/HEA-polyamide 66(PHP-TENG)is proposed in this study.The coupling of displacement current from the polarization field and magnetization current generated by time-varying electric-field magnetization of magnetic HEAs can improve the electrical characteristics of TENGs.The maximum voltage,current,and power density of the PHP-TENG are 156.34 V,1.56μA,and 188.40 mW·m^(−2),respectively.PHP-TENG maintains a stable current output even after 20,000 cycles.Furthermore,it can power a 47μF commercial capacitor to 2.5 V in 70 s and propel a hygrometer to function normally.In addition,PHP-TENG exhibits satisfactory sensitivity to humidity.These results indicate that TENGs based on magnetic HEAs exhibit potential for high-efficiency energy-collecting devices.展开更多
文摘Background:This study aims to explore the therapeutic effects of the Qi Teng Mai Ning recipe on ischemic stroke and vascular cognitive impairment through its potential to modulate cellular autophagy,with a focus on identifying its active ingredients and their target proteins.Methods:The study began with the identification of active ingredients in the Qi Teng Mai Ning recipe.It proceeded to screen the gene expression omnibus database for ischemic stroke and vascular cognitive impairment-associated differentially expressed mRNAs and to identify cellular autophagy-related proteins via the Human Autophagy Database.These proteins were annotated with Gene Ontology and Kyoto Encyclopedia of Genes and Genomes functions and subjected to molecular docking with the recipe’s core active ingredients.In vitro cell experiments were conducted on hypoxic HT22 cells,involving CCK8 assay,lentiviral transfection to silence autophagy related 9B(ATG9B),immunofluorescence staining,and qPCR validation to investigate the effects of the recipe on autophagy.Results:The analysis identified 104 active ingredients targeting 408 proteins and forming a complex ingredient-target network.Intersecting 55 ischemic stroke-related and 909 vascular cognitive impairment-related differentially expressed mRNAs revealed 14 co-expressed mRNAs.Molecular docking showed quercetin,kaempferol,myrcene,and conferone as key ingredients targeting autophagy-related proteins.Cellular experiments indicated that the recipe significantly enhanced cell viability under hypoxic conditions,reduced apoptosis,and modulated the expression of autophagy-related factors,thereby decreasing apoptosis rates in HT22 cells.Conclusion:The Qi Teng Mai Ning recipe offers protective effects against ischemic stroke and vascular cognitive impairment by modulating autophagy-related proteins.Its efficacy highlights the potential of traditional Chinese medicine in treating these conditions,though further research is needed to fully understand its mechanisms and clinical applications.
文摘More studies have indicated that polysaccharide sulfate has anti-coagulant activity.Now,heparin is the most popular anticoagulant used in clinic,however,its side effects have also caused highly concern.It is still under intensive investigations to synthesize effective safe polysaccharide sulfate as heparin substitute.We extracted water-soluble polysaccharide from fermented mycelium of edible polyporus albicans（Imaz.） teng,and got the water-soluble polyporus albicans teng sulfate（PATS） by modifying the water-solubility polyose with the method of chlorosulfonic acid-pyridine.The anti-coagulant assay of PATS in vitro towards normal human plasma indicates its remarkable anticoagulant activity,while the dose could be as low as 5 mg/L for anticoagulation.The anti-coagulant effect was equivalent to that of heparin about 150 U when the concentration of PATS was 10 mg/L.The study on anti-coagulation mechanism suggests that PATS got involved in the intrinsic pathway.The anti-coagulation activity of PATS was due to the inhibition of the coagulation factors IIa and Xa activities mediated by antithrombin Ⅲ（ATIII）.The anti-coagulation mechanism of PATS is absolutely identical to that of heparin.In conclusion,we suggest that PATS has the similar anti-coagulation characteristic to heparin,but with a better anti-coagulation effect.Meanwhile,derived from edible fungus-polysaccharide,PATS has more bio-safety advantage.Therefore,PATS has promising future to be developed and used as an ideal substitute for heparin in clinic.
基金supported in part by the National Natural Science Foundation of China(NSFC)under Grant No.52007095 and in part by NSFC under Grant No.51977118.
文摘Raindrops contain abundant renewable energy including both kinetic energy and electrostatic energy,and how to effectively harvest it becomes a hot research topic.Recently,a triboelectric nanogenerator(TENG)using liquid-solid contact electrification has been demonstrated for achieving an ultra-high instantaneous power output.However,when harvesting the energy from the dense raindrops instead of a single droplet,a more rational structure to eliminate the mutual influence of individual generation units is needed for maximize the output.In this work,a“solar panel-like”bridge array generators(BAGs)is proposed.By adopting array lower electrodes(ALE)and bridge reflux structure(BRS),BAGs could minimize the sharp drop in the peak power output for large-scale energy harvesting devices.When the area of the raindrop energy harvesting device is 15×15 cm2,the peak power output of BAGs reached 200 W/m2,which is remarkable for paving a potential industrial approach for effective harvesting raindrop energy at a large scale.
基金Collaborative Innovation Center of Zhuang and Yao Ethnic Medicine,No.:Gui Jiao Ke Yan〔2013〕20Guangxi first-class discipline construction project(No.Gui Jiao Ke Yan[2018]12)+1 种基金Open Project for Guangxi First-class Discipline Constuction of GuangxiUniversity of Chinese Medicine(No.2019XK038)Funded by Development Program of High-level Talent Team under Qihuang Project of Guangxi University of Chinese Medicine(No.2018005).
文摘Objecrive:To investigate the expression of TNF-αand NF-κB in the uterus of chronic pelvic inflammatory disease(CPID)model rats.Methods:40 female rats that adaptive fed for 5 days were randomly divided into normal group,model group,high dose group,medium dose group and low dosegroup.In addition to the normal group:the rats in each group were made chronic pelvic inflammatory model by mechanical injuuy combined with implantation of bacteria.The rats in each group were administrated by gavage for 20days.After the last administration,the level of TNF-αand NF-κB in serum was measured by ELASA method.Results:(1)after the establishment of the model,the uterus of the chronic pelvic inflammatory model rats showed the pathological damage of chroic infilammation;the levels of lNF-αand NF-κB inserum were higher than those in the normal group,the difference was statistically significant(P<0.05).(2)After the drug intervention,the uterine tissue morphology of the rats in the Zhuang Yi Liu Fang Teng Fang Group was basically restored to normal,with only a small amount of inflammatory cell infiltration and other pathological changes;compared with the rats in the model group,the TNF-αin serum of the rats in each treatment group was lower,the difference was statistically significant(P<0.05).The expression of NF-κB in serum of each treatment group was lower fthan that of the model group(P<0.05).Conclusion:Zhuang Yi Liu Teng Fang can efectively improve the endometrial histomorphology of CPID model rats,and regulate the levels of TNF-αand NF-κB in the uterus of chronic pelvic inflammatory model rats.
文摘The Teng people are an ethnic group who live in the boundary area of Tibet.For various reasons,the survey of ethnic minorities in China.conducted in the 1950s,excluded the Teng people. Nevertheless,the products,the lifestyle and even the culture of the Teng people are unique amongst ethnic Tibetan.Moinpa, and Lhopa.They are,therefore,named as the"Teng people".
基金supported by the National Natural Science Foundation of China(No.52372284)the Natural Science Foundation of Henan Province(No.232300421135).
文摘Triboelectric nanogenerators(TENGS)represent a cutting-edge class of devices for energy conversion and self-powered sensing.The selection of appror priate triboelectric and conductive materials is critical in determining the performance of TENGS.In recent years,MXenes,particularly T,C,MXenes,have emerged as promising candidates for triboelectric/conductive materials in TENGS.To elucidate the multifaceted roles of MXenes,this review examines their applications from a materials science perspective.The applications are categorized into four types based on the functional layers of TENGS where MXenes are applied:(1)MXene films as conductive laye rs,(2)MXene films as triboelectric layers,(3)MXene nanosheets as fillers in polymer-based triboelectric layers,and(4)MXene films as charge trapping layers.The rationale and advantages of utilizi ng MXenes in each application are analyzed and elucidated.Owing to their unique combination of properties,including electronegativity,electrical conductivity,and flexibility,MXenes demonstrate remarkable versatility in all functional layers,either as pure films or composite films.Systematic analysis reveals that MXene composite films are particularly promising for various applications.This review represents the first comprehensive attempt to classify MXene applications in TENGS and articulate their inherent advantages,thereby providing a foundation for the design and development of high-performance MXene-based TENGS.
基金support from National Natural Science Foundation of China(No.52173059)China National Textile and Apparel Council Science and Technology Guidance Project(No.2020116)+1 种基金the Key Research and Development Program of Jiangsu Province(No.21KJA540002)the Open Project of Tianjin Key Laboratory of Optoelectronic Detection Technology and System(No.2023LOTDS011).
文摘Portable power is an effective solution to realize self-powered sensors for wearable devices,promoting future sustainable development.Membrane-based triboelectric nanogenerators(M-TENGs)have emerged as a promising technology for harvesting biomechanical energy from human motion owing to their advantages,such as simple structure,lightweight design,and efficient energy conversion.However,the poor durability,low adaptability,and un-washability of two-dimensional membrane materials have largely hindered their application in wearable electronics.In this study,we propose a sheath-core polyvinylidene fluoride(PVDF)/graphene(G)-carbon fiber(CF)yarn fabricated via conjugate electrospinning,comprising a commercial CF core and an electrospun graphene-doped PVDF sheath,which improves the fatigue resistance of electrospun nanofiber films under prolonged friction and keeps a high degree of freedom.The resulting electronic textile,woven with the large-scale electrospun PVDF/G-CF yarn,demonstrates a remarkable power density of 25.5 mW·m^(-2).The tight distribution of PVDF/G nanofibers on the textile surface ensures excellent softness,washability,and durability.Furthermore,the electrospun PVDF/G-CF textile exhibits significant potential in pressure sensing,self-powered operation,and motion detection,making it highly suitable for wearable electronics applications.
基金supported by the National Natural Science Foundation of China(No.52273077)the State Key Laboratory of Bio-Fibers&Eco-Textiles,Qingdao University(Nos.ZDKT202108 and G2RC202022).
文摘Although traditional soft magnetic materials have been investigated to improve triboelectric nanogenerator(TENG)performance,their electrical output performance remains insufficient.Magnetic high-entropy alloys(HEAs),a new type of magnetic functional material,possess excellent mechanical and magnetic properties.However,the electrical characteristics of TENGs based on magnetic HEAs remain unexplored.Therefore,a TENG based on polyvinylidene fluoride/HEA-polyamide 66(PHP-TENG)is proposed in this study.The coupling of displacement current from the polarization field and magnetization current generated by time-varying electric-field magnetization of magnetic HEAs can improve the electrical characteristics of TENGs.The maximum voltage,current,and power density of the PHP-TENG are 156.34 V,1.56μA,and 188.40 mW·m^(−2),respectively.PHP-TENG maintains a stable current output even after 20,000 cycles.Furthermore,it can power a 47μF commercial capacitor to 2.5 V in 70 s and propel a hygrometer to function normally.In addition,PHP-TENG exhibits satisfactory sensitivity to humidity.These results indicate that TENGs based on magnetic HEAs exhibit potential for high-efficiency energy-collecting devices.
