Portulaca oleracea L.,commonly known as purslane,is a worldwide weed species belonging to the family Portulacaceae and has been known as“Global Panacea”.As one of the most widely consumed green vegetables and medici...Portulaca oleracea L.,commonly known as purslane,is a worldwide weed species belonging to the family Portulacaceae and has been known as“Global Panacea”.As one of the most widely consumed green vegetables and medicinal plants around the world,it has recently been re-evaluated as a potential“new crop”due to the properties that differentiate it as one of the best vegetable sources of omega-3 fatty acid(α-linolenic acid),as well as a variety of nutrients and phytochemicals.Accordingly,emerging research has found that purslane exhibits health-promoting properties like anti-inflammatory,anti-hyperglycemic,antioxidant,neuroprotective,and immunomodulatory.These findings suggest that this species possesses a potential using as a dietary supplement beyond potherb and traditional medicine.This review systematically summarizes the up-to-date research carried out on purslane,including the nutritional compositions,bioactive compounds,and health benefits it exerts as well as limitations,challenges,and future directions of research.Finally,we hope that this review would provide purslane with a comprehensive reference and future scope as functional and health-promoting food for disease prevention and treatment.展开更多
AIM：To evaluate the possible differences in visual quality between small incision lenticule extraction（SMILE）and femtosecond laser in situ keratomileusis（FS-LASIK）for myopia.METHODS：A Meta-analysis was performed...AIM：To evaluate the possible differences in visual quality between small incision lenticule extraction（SMILE）and femtosecond laser in situ keratomileusis（FS-LASIK）for myopia.METHODS：A Meta-analysis was performed.Patients were from previously reported comparative studies treated with SMILE versus FS-LASIK.The Pub Med,EMBASE,Cochrane,Web of Science and Chinese databases（i.e.WANFANG and CNKI）were searched in Nov.of 2016 using Rev Man 5.1 version software.The differences in visual acuity,aberration and biomechanical effects within six months postoperatively were showed.Twenty-seven studies including 4223 eyes were included.RESULTS：No significant differences were observed between SMILE and FS-LASIK in terms of the proportion of eyes that lost one or more lines of corrected distance visual acuity after surgery（P=0.14）,the proportion of eyes achieving an uncorrected distance visual acuity of 20/20or better（P=0.43）,the final refractive spherical equivalent（P=0.89）,the refractive spherical equivalent within±1.00diopter of the target values（P=0.80）,vertical coma（P=0.45）and horizontal coma（P=0.06）.Compared with the FSLASIK group,total higher-order aberration（P〈0.001）and spherical aberration（P〈0.001）were higher and the decrease in corneal hysteresis（P=0.0005）and corneal resistance factor（P=0.02）were lower in the SMILE group.CONCLUSION：SMILE and FS-LASIK are comparable in efficacy,safety and predictability for correcting myopia.However,the aberration in the SMILE group is superior to that in the FS-LASIK group,and the loss of biomechanical effects may occur less frequently after SMILE than after FS-LASIK.展开更多
Phytochemicalinvestigation onthe whole plants of Ypsilandra yunnanensiswas carried out forthe firsttime andledtothe isolation of five new cholestanol glycosides,ypsiyunnosides A–E(1–5),and one known analogue.Their s...Phytochemicalinvestigation onthe whole plants of Ypsilandra yunnanensiswas carried out forthe firsttime andledtothe isolation of five new cholestanol glycosides,ypsiyunnosides A–E(1–5),and one known analogue.Their structures were determined mainly by detailed spectroscopic analysis,including extensive 1D and 2D NMR,MS and UV,as well as chemical methods.Among them,compound 1 possessed a rare 6/6/6/5/5 fused-rings cholestanol sketelon,which was identified as(23R,25R)-3β,16α,26-triol-16,23-cyclocholest-5,17(20)-dien-22-one.Their induced platelet aggregation activities and cytotoxicities were evaluated.Graphical Abstract Five new cholestanol glycosides,ypsiyunnosides A–E(1–5),were isolated from the whole plants of Ypsilandra yunnanensis.Compound 1 possessed a rare 6/6/6/5/5 fused-rings cholestanol sketelon.Their structures were elucidated by a combination of 1D and 2D NMR,MS and chemical analysis.展开更多
Phytochemical investigation of the rhizomes of Paris polyphylla var.stenophylla led to the isolation of two new highly oxygenated spirostanol saponins,named paristenosides A(1)and B(2),together with seven known compou...Phytochemical investigation of the rhizomes of Paris polyphylla var.stenophylla led to the isolation of two new highly oxygenated spirostanol saponins,named paristenosides A(1)and B(2),together with seven known compounds.Their structures were established mainly on the base of NMR spectroscopic techniques and mass spectrometry,as well as chemical methods.In addition,the cytotoxicity of the two new saponins was tested.Graphical Abstract Two new highly oxygenated spirostanol saponins,paristenosides A(1)and B(2),were isolated from the rhizomes of Paris polyphylla var.stenophylla.Their structures were established mainly based on NMR spectroscopic techniques and mass spectrometry,as well as chemical methods.展开更多
The mixture consisted of benzotriazole (BTA), chitosan (CTS), polyacrylic acid and zinc salt has been investigated as a corrosion and scale inhibitor of A3 carbon steel in cooling water. The scale and corrosion inhibi...The mixture consisted of benzotriazole (BTA), chitosan (CTS), polyacrylic acid and zinc salt has been investigated as a corrosion and scale inhibitor of A3 carbon steel in cooling water. The scale and corrosion inhibition efficiency was evaluated by static anti-scaling teat together with rotary coupon test. Compared with the phosphorus corrosion and scale inhibitor, the corrosion inhibition rate and scale inhibition rate of it increased respectively by 2.51% and 1.16%. As the corrosion and scale inhibitor is phosphate-free, it won’t cause eutrophication, considering the product performance and environmental influence, the phosphate-free corrosion and scale inhibitor is superior to the traditional one.展开更多
Two new monosaccharide steroidal saponins,named ypsilandroside S(1)and ypsilandroside T(2),have been isolated from the whole plants of Ypsilandra thibetica.Their structures were elucidated as heloniogenin 3-O-b-D-apio...Two new monosaccharide steroidal saponins,named ypsilandroside S(1)and ypsilandroside T(2),have been isolated from the whole plants of Ypsilandra thibetica.Their structures were elucidated as heloniogenin 3-O-b-D-apiofuranoside(1)and pregna 5,16-dien-3b,12a-diol-20-one-3-O-b-D-apiofuranoside(2)by spectroscopic techniques(1D and 2D NMR,MS).Compounds 1 and 2 were tested for their inhibitory effects on lipopolysaccharide-induced nitric oxide production in RAW 264.7 cells.展开更多
The recyclable and stable ZnFe_(2)O_(4) small particle decorated one‐dimensional perylene diimide(PDI)S‐scheme heterojunction(1D PDI/ZnFe_(2)O_(4))is prepared by the hydrochloric acid‐mediated(HCl‐mediated)strateg...The recyclable and stable ZnFe_(2)O_(4) small particle decorated one‐dimensional perylene diimide(PDI)S‐scheme heterojunction(1D PDI/ZnFe_(2)O_(4))is prepared by the hydrochloric acid‐mediated(HCl‐mediated)strategy,interestingly,the morphology of the 1D PDI/ZnFe_(2)O_(4) can also be effectively regulated by HCl‐mediated process,the existence of HCl can regulate PDI into a uniform rod structure,while the co‐existence of HCl and PDI can limit ZnFe_(2)O_(4) to become the uniform small particles.More importantly,based on the 1D rod structure of PDI and the small size effect of ZnFe_(2)O_(4),carriers can migrate to the surface more easily,which can improve the photocatalytic activity.Meanwhile,due to the appropriate energy level structure,the S‐scheme heterojunction structure is formed between PDI and ZnFe_(2)O_(4),which eliminates meaningless photo‐generated charge carriers through recombination and introduces strong redox to further enhance the photodegradation effect,thereby,1D PDI/ZnFe_(2)O_(4) exhibits excellent photocatalytic ability,under the visible light irradiation,the degradation rate of tetracycline(TC)with 1D PDI/ZnFe_(2)O_(4)(66.67%)is 9.18 times that with PDI(7.26%)and 9.73 times that with ZnFe_(2)O_(4)(6.85%).This work proposes new ideas for the assembly of magnetic organic‐inorganic S‐scheme heterojunction photocatalysts.展开更多
Two new eudesmane-type sesquiterpenoid lactones,named chlorelactone A(1)and chlorelactone B(2),and one new labdane-type diterpenoid,named elatiorlabdane(3),along with seven known sesquiterpenoids and one known disesqu...Two new eudesmane-type sesquiterpenoid lactones,named chlorelactone A(1)and chlorelactone B(2),and one new labdane-type diterpenoid,named elatiorlabdane(3),along with seven known sesquiterpenoids and one known disesquiterpenoid were isolated from the whole plants of Chloranthus elatior.Their structures and relative configurations were established on the basis of extensive spectroscopic analysis.展开更多
Phytochemical reinvestigation on the whole plants of Ypsilandra thibetica obtained four new spirostanol glycosides,named ypsilandrosides U-X(1-4),and one new cholestanol glycoside,named ypsilandroside Y(5).Their struc...Phytochemical reinvestigation on the whole plants of Ypsilandra thibetica obtained four new spirostanol glycosides,named ypsilandrosides U-X(1-4),and one new cholestanol glycoside,named ypsilandroside Y(5).Their structures have been established by extensive spectroscopic data and chemical methods.Among them,compound 4 is a rare spirostanol glycoside which possesses a novel 5(6→7)abeo-steroidal aglycone,while compound 1 is a first spiro-stanol bisdesmoside attached to C-3 and C-12,respectively,isolated from the genus Ypsilandra.The induced platelet aggregation activity of the isolates was tested.展开更多
Callisalignenes G–I(1–3),three new meroterpenoids of b-triketone and monoterpene,along with two known analogues(4 and 5),were isolated from Callistemon salignus.Their structures and absolute configurations were unam...Callisalignenes G–I(1–3),three new meroterpenoids of b-triketone and monoterpene,along with two known analogues(4 and 5),were isolated from Callistemon salignus.Their structures and absolute configurations were unambiguously established by a combination of NMR and MS analysis and electronic circular dichroism(ECD)evidence.Callisalignenes H(2)and I(3)have a rare sec-butyl moiety at C-7.Meroterpenoids 1–3 exhibited cytotoxicity against HCT116 cells with IC50 values of 8.51±1.8,9.12±0.3,and 16.33±3.3 lM,respectively.展开更多
基金supported by the National Natural Science Foundation of China(32170408,32000280,and U1802287)the Ten Thousand Talents Plan of Yunnan Province for Industrial Technology Leading Talents(YNWR-CYJS-2019-011)+2 种基金Yunnan Revitalization Talent Support Program“Top Team”Project(202305AT350001)the Training of Technological Innovation Talents of Yunnan Province(202305AD160009 for Huan Yan)the Project of Yunnan Characteristic Plant Screening and R&D Service CXO Platform(2022YKZY001).
文摘Portulaca oleracea L.,commonly known as purslane,is a worldwide weed species belonging to the family Portulacaceae and has been known as“Global Panacea”.As one of the most widely consumed green vegetables and medicinal plants around the world,it has recently been re-evaluated as a potential“new crop”due to the properties that differentiate it as one of the best vegetable sources of omega-3 fatty acid(α-linolenic acid),as well as a variety of nutrients and phytochemicals.Accordingly,emerging research has found that purslane exhibits health-promoting properties like anti-inflammatory,anti-hyperglycemic,antioxidant,neuroprotective,and immunomodulatory.These findings suggest that this species possesses a potential using as a dietary supplement beyond potherb and traditional medicine.This review systematically summarizes the up-to-date research carried out on purslane,including the nutritional compositions,bioactive compounds,and health benefits it exerts as well as limitations,challenges,and future directions of research.Finally,we hope that this review would provide purslane with a comprehensive reference and future scope as functional and health-promoting food for disease prevention and treatment.
文摘AIM：To evaluate the possible differences in visual quality between small incision lenticule extraction（SMILE）and femtosecond laser in situ keratomileusis（FS-LASIK）for myopia.METHODS：A Meta-analysis was performed.Patients were from previously reported comparative studies treated with SMILE versus FS-LASIK.The Pub Med,EMBASE,Cochrane,Web of Science and Chinese databases（i.e.WANFANG and CNKI）were searched in Nov.of 2016 using Rev Man 5.1 version software.The differences in visual acuity,aberration and biomechanical effects within six months postoperatively were showed.Twenty-seven studies including 4223 eyes were included.RESULTS：No significant differences were observed between SMILE and FS-LASIK in terms of the proportion of eyes that lost one or more lines of corrected distance visual acuity after surgery（P=0.14）,the proportion of eyes achieving an uncorrected distance visual acuity of 20/20or better（P=0.43）,the final refractive spherical equivalent（P=0.89）,the refractive spherical equivalent within±1.00diopter of the target values（P=0.80）,vertical coma（P=0.45）and horizontal coma（P=0.06）.Compared with the FSLASIK group,total higher-order aberration（P〈0.001）and spherical aberration（P〈0.001）were higher and the decrease in corneal hysteresis（P=0.0005）and corneal resistance factor（P=0.02）were lower in the SMILE group.CONCLUSION：SMILE and FS-LASIK are comparable in efficacy,safety and predictability for correcting myopia.However,the aberration in the SMILE group is superior to that in the FS-LASIK group,and the loss of biomechanical effects may occur less frequently after SMILE than after FS-LASIK.
基金This work was supported by the National Natural Science Funding of China(Grants 31170333 and 31570363).
文摘Phytochemicalinvestigation onthe whole plants of Ypsilandra yunnanensiswas carried out forthe firsttime andledtothe isolation of five new cholestanol glycosides,ypsiyunnosides A–E(1–5),and one known analogue.Their structures were determined mainly by detailed spectroscopic analysis,including extensive 1D and 2D NMR,MS and UV,as well as chemical methods.Among them,compound 1 possessed a rare 6/6/6/5/5 fused-rings cholestanol sketelon,which was identified as(23R,25R)-3β,16α,26-triol-16,23-cyclocholest-5,17(20)-dien-22-one.Their induced platelet aggregation activities and cytotoxicities were evaluated.Graphical Abstract Five new cholestanol glycosides,ypsiyunnosides A–E(1–5),were isolated from the whole plants of Ypsilandra yunnanensis.Compound 1 possessed a rare 6/6/6/5/5 fused-rings cholestanol sketelon.Their structures were elucidated by a combination of 1D and 2D NMR,MS and chemical analysis.
基金This work is funded by the National Natural Science Funding of China(Grand No.31570363)the Key Research Program of the Chinese Academy of Sciences(Grand No.KSZDEW-Z-004-03-4)the Natural Science Foundation of Yunnan Province(Grand No.2015FA031).
文摘Phytochemical investigation of the rhizomes of Paris polyphylla var.stenophylla led to the isolation of two new highly oxygenated spirostanol saponins,named paristenosides A(1)and B(2),together with seven known compounds.Their structures were established mainly on the base of NMR spectroscopic techniques and mass spectrometry,as well as chemical methods.In addition,the cytotoxicity of the two new saponins was tested.Graphical Abstract Two new highly oxygenated spirostanol saponins,paristenosides A(1)and B(2),were isolated from the rhizomes of Paris polyphylla var.stenophylla.Their structures were established mainly based on NMR spectroscopic techniques and mass spectrometry,as well as chemical methods.
文摘The mixture consisted of benzotriazole (BTA), chitosan (CTS), polyacrylic acid and zinc salt has been investigated as a corrosion and scale inhibitor of A3 carbon steel in cooling water. The scale and corrosion inhibition efficiency was evaluated by static anti-scaling teat together with rotary coupon test. Compared with the phosphorus corrosion and scale inhibitor, the corrosion inhibition rate and scale inhibition rate of it increased respectively by 2.51% and 1.16%. As the corrosion and scale inhibitor is phosphate-free, it won’t cause eutrophication, considering the product performance and environmental influence, the phosphate-free corrosion and scale inhibitor is superior to the traditional one.
基金the National Natural Science Funding of China(No.31170333)the Natural Science Foundation of Yunnan Province(No.2009CC019).
文摘Two new monosaccharide steroidal saponins,named ypsilandroside S(1)and ypsilandroside T(2),have been isolated from the whole plants of Ypsilandra thibetica.Their structures were elucidated as heloniogenin 3-O-b-D-apiofuranoside(1)and pregna 5,16-dien-3b,12a-diol-20-one-3-O-b-D-apiofuranoside(2)by spectroscopic techniques(1D and 2D NMR,MS).Compounds 1 and 2 were tested for their inhibitory effects on lipopolysaccharide-induced nitric oxide production in RAW 264.7 cells.
文摘The recyclable and stable ZnFe_(2)O_(4) small particle decorated one‐dimensional perylene diimide(PDI)S‐scheme heterojunction(1D PDI/ZnFe_(2)O_(4))is prepared by the hydrochloric acid‐mediated(HCl‐mediated)strategy,interestingly,the morphology of the 1D PDI/ZnFe_(2)O_(4) can also be effectively regulated by HCl‐mediated process,the existence of HCl can regulate PDI into a uniform rod structure,while the co‐existence of HCl and PDI can limit ZnFe_(2)O_(4) to become the uniform small particles.More importantly,based on the 1D rod structure of PDI and the small size effect of ZnFe_(2)O_(4),carriers can migrate to the surface more easily,which can improve the photocatalytic activity.Meanwhile,due to the appropriate energy level structure,the S‐scheme heterojunction structure is formed between PDI and ZnFe_(2)O_(4),which eliminates meaningless photo‐generated charge carriers through recombination and introduces strong redox to further enhance the photodegradation effect,thereby,1D PDI/ZnFe_(2)O_(4) exhibits excellent photocatalytic ability,under the visible light irradiation,the degradation rate of tetracycline(TC)with 1D PDI/ZnFe_(2)O_(4)(66.67%)is 9.18 times that with PDI(7.26%)and 9.73 times that with ZnFe_(2)O_(4)(6.85%).This work proposes new ideas for the assembly of magnetic organic‐inorganic S‐scheme heterojunction photocatalysts.
基金supported by National Natural Science Funding of China(No.81072543)the Key Project of Knowledge Innovation Project of CAS(No.KSCX2-EW-Q-10)funds(No.P2009-KF04)from the State Key Laboratory of Phytochemistry and Plant Resources in West China.
文摘Two new eudesmane-type sesquiterpenoid lactones,named chlorelactone A(1)and chlorelactone B(2),and one new labdane-type diterpenoid,named elatiorlabdane(3),along with seven known sesquiterpenoids and one known disesquiterpenoid were isolated from the whole plants of Chloranthus elatior.Their structures and relative configurations were established on the basis of extensive spectroscopic analysis.
基金supported by the National Natural Science Foundation of China (U1802287 and 32000280)the Ten Thousand Talents Plan of Yunnan Province for Industrial Technology Leading Talentsthe State Key Laboratory of Phytochemistry and Plant Resources in West China (P2019-ZZ02).
文摘Phytochemical reinvestigation on the whole plants of Ypsilandra thibetica obtained four new spirostanol glycosides,named ypsilandrosides U-X(1-4),and one new cholestanol glycoside,named ypsilandroside Y(5).Their structures have been established by extensive spectroscopic data and chemical methods.Among them,compound 4 is a rare spirostanol glycoside which possesses a novel 5(6→7)abeo-steroidal aglycone,while compound 1 is a first spiro-stanol bisdesmoside attached to C-3 and C-12,respectively,isolated from the genus Ypsilandra.The induced platelet aggregation activity of the isolates was tested.
基金National Natural Science Foundation of China(Nos.31600283 and 31570363)fund of State Key Laboratory of Phytochemistry and Plant Resources in West China(No.P2017-ZZ04)from Kunming Institute of Botany,Chinese Academy of Sciences.
文摘Callisalignenes G–I(1–3),three new meroterpenoids of b-triketone and monoterpene,along with two known analogues(4 and 5),were isolated from Callistemon salignus.Their structures and absolute configurations were unambiguously established by a combination of NMR and MS analysis and electronic circular dichroism(ECD)evidence.Callisalignenes H(2)and I(3)have a rare sec-butyl moiety at C-7.Meroterpenoids 1–3 exhibited cytotoxicity against HCT116 cells with IC50 values of 8.51±1.8,9.12±0.3,and 16.33±3.3 lM,respectively.
