Objective:We aimed to develop a novel Artemisia rupestris L.flavonoid nano-encapsulation(AFN)preparation and evaulate its anti-hepatitis B virus(HBV)activityin vitro.Methods:First,the AFN was prepared using polylactic...Objective:We aimed to develop a novel Artemisia rupestris L.flavonoid nano-encapsulation(AFN)preparation and evaulate its anti-hepatitis B virus(HBV)activityin vitro.Methods:First,the AFN was prepared using polylactic-co-glycolic acid(PLGA).Then,after verification of the AFN,in vitro anti-virus assays were conducted by:(1)assessing the inhibitory effect of AFN on the secretion of hepatitis B surface antigens(HBsAg),hepatitis B e-antigens(HBeAg),and the replication of HBV DNAin HepG2.2.15 cells;(2)analyzing the influence of AFN on the activation rate of NF-κB positive cells;and(3)evaluating the effect of AFN on the function of glutathione peroxidase(GSH-PX)enzymes located onthe HepG2.2.15 cell membrane.Results:Compared to the original total flavonoids extract of Artemisia rupestris L.(withoutnano-encapsulation),AFN preparation under the maximum nontoxic concentration effectively inhibited the secretion of HBsAg,HBeAg,and HBV DNA from HepG2.2.15 cells.At the same time,AFN preparation promoted not only the activation rate of NF-κB positive cells,but also antiviral GSH-PX enzyme function.In conclusion,nano-encapsulation of the flavonoids extract of Artemisia rupestris L.showed an enhanced anti-HBV effect in vitro compared to the original total flavonoids extract(without nanoencapsulation);therefore,nano-encapsulation has great potential for the development of a novel antiviral herbal medicine preparation with improved efficacy.展开更多
Artemisia vulgaris L. was collected from various regions in the USA and Montreal Canada. Gas Chromatography-Mass Spectrometry was used to identify the analytes present in the volatiles extracted by headspace solid-pha...Artemisia vulgaris L. was collected from various regions in the USA and Montreal Canada. Gas Chromatography-Mass Spectrometry was used to identify the analytes present in the volatiles extracted by headspace solid-phase microextraction of the crushed leaves and flowers. Four distinct chemotypes are were found: One featuring the coexistence of ar-curcumene and α-zingiberene;two marked by the presence or absence of thujone and santolinatriene;and a fourth characterized by the presence of crysanthenyl acetate (40%). DNA was used to confirm the identity of Artemisia vulgaris L.展开更多
Coccidiosis is a disease caused by protozoa of the genus Eimeria which seriously affects young rabbits. Treatment based on the use of anticoccidial drugs is increasingly ineffective due to the rapid emergence of resis...Coccidiosis is a disease caused by protozoa of the genus Eimeria which seriously affects young rabbits. Treatment based on the use of anticoccidial drugs is increasingly ineffective due to the rapid emergence of resistant strains of coccidia and the high cost of drugs. Consumer demand for rabbit products without chemical residues led to a growing interest in the use of medicinal plants as an alternative treatment for coccidiosis. The present study was carried out during the period of August to December 2020 to assess the anticoccidial effect of hydro-ethanolic extract of leaves of Artemisia annua L., in young rabbits. The antiparasitic efficacy of Artemisia extract was tested on 15 young rabbits (whose age varied between 7 and 9 weeks) divided into 5 lots of 3 animals. The average weight of these animals was 790 g. The results of this study show that the feces samples and the weight of young rabbits before administration of the treatment and the coprological examination (every 7 days for 4 weeks) show a fecal excretion reduction rate (FECRT) of 55.13% in the lot treated by sulfonamide. On the other hand, in animals received treatments extract of the leaves of Artemisia annua L., the average FECRT is evaluated at 69.64%, 79.22%, and 96.36% for respective doses of 400, 800 and 1200 mg/kg bodyweight and proves their anticoccidial effect. Furthermore, the variation in mean Eggs Per Gram (EPG) of coccidia and the average weekly weight gain (AWWG) of each lot were significant in the lots treated with hydro-ethanolic extract (P 0.05). The greatest reductions in oocystal excretion and weight gain obtained were those of lot 5, treated at 1200 mg/kg of hydro-ethanolic leaves extract of Artemisia annua L.展开更多
The genetic diversity of Artemisia halodendron(Asteraceae), a constructive and dominant species in Horqin Sandy Land,was investigated to examine the genetic relationships with different hydrothermal regions in Horqin ...The genetic diversity of Artemisia halodendron(Asteraceae), a constructive and dominant species in Horqin Sandy Land,was investigated to examine the genetic relationships with different hydrothermal regions in Horqin Sandy Land. We sequenced chloroplast DNA(cp DNA) fragments(trn L–F) of 243 plants from 10 populations across the Horqin Sandy Land.The analyses of cp DNA variation identified seven haplotypes. A low level of haplotype diversity(H_d=0.706) and nucleotide diversity(π=0.0013) was detected. Haplotypes clustered into two tentative clades. Low genetic differentiation among regions was consistently indicated by hierarchical analyses of molecular variance(AMOVA). Across the sampled populations, the haplotype distributions were differentiated with hydrothermal gradients.展开更多
Objective:To explore the cause and feasibility of Artemisia ordosica allergic rhinitis.Methods:The main allergic causes of allergic rhinitis patients in Chifeng City of inner Mongolia were analyzed by a control method...Objective:To explore the cause and feasibility of Artemisia ordosica allergic rhinitis.Methods:The main allergic causes of allergic rhinitis patients in Chifeng City of inner Mongolia were analyzed by a control method.Results:According to the results,Artemisia ordosica is the most important cause of allergic rhinitis in inner Mongolia.In addition,allergic history,asthma and other diseases,or animal hair and other factors can also increase the risk of patients with allergic rhinitis.Conclusions:Artemisia sphaerocephala is the main cause of allergic rhinitis.In recent years,allergic rhinitis has attracted the attention of international organizations,and the medical community has also studied more methods for the treatment of rhinitis,such as putting forward relevant traditional Chinese medicine(TCM)treatment methods.展开更多
Derivation conditions of pre-column derivation-HPLC method used for determinating artemisinin content were compared and selected,and artemisinin content in above-ground part of Artemisia annua L.from seventeen locatio...Derivation conditions of pre-column derivation-HPLC method used for determinating artemisinin content were compared and selected,and artemisinin content in above-ground part of Artemisia annua L.from seventeen locations was compared by optimal pre-column derivation-HPLC method.The optimal derivation condition is selected via comparing of 0.2% NaOH solution addition(3,4,5,6 and 7 mL),derivation temperature(30 ℃,35 ℃,40 ℃,45 ℃ and 50 ℃) and derivation time(0,2,5,10,20,40 and 60 min) during derivation process.The optimal derivation condition is adding 5 mL 0.2% NaOH solution,then insulating in 40 ℃ water bath for 10 min.Differences of artemisinin content in A.annua from seventeen locations are obvious,the general trend is that artemisinin content decreases gradually with location from south to north,in which artemisinin content in A.annua from Youyang of Chongqing is the highest with a value of 7.08 mg·g-1.The method is simple and accurate with good reproducibility,and can be used to determinate artemisinin content in medicinal material of A.annua.展开更多
基金supported by the Science and Technology International Cooperation Project of Xinjiang Uygur Autonomous Region of China(No.20166015)the National Natural Science Foundation of China(No.81773175)the China Postdoctoral Science Foundation(No.2018M630839).
文摘Objective:We aimed to develop a novel Artemisia rupestris L.flavonoid nano-encapsulation(AFN)preparation and evaulate its anti-hepatitis B virus(HBV)activityin vitro.Methods:First,the AFN was prepared using polylactic-co-glycolic acid(PLGA).Then,after verification of the AFN,in vitro anti-virus assays were conducted by:(1)assessing the inhibitory effect of AFN on the secretion of hepatitis B surface antigens(HBsAg),hepatitis B e-antigens(HBeAg),and the replication of HBV DNAin HepG2.2.15 cells;(2)analyzing the influence of AFN on the activation rate of NF-κB positive cells;and(3)evaluating the effect of AFN on the function of glutathione peroxidase(GSH-PX)enzymes located onthe HepG2.2.15 cell membrane.Results:Compared to the original total flavonoids extract of Artemisia rupestris L.(withoutnano-encapsulation),AFN preparation under the maximum nontoxic concentration effectively inhibited the secretion of HBsAg,HBeAg,and HBV DNA from HepG2.2.15 cells.At the same time,AFN preparation promoted not only the activation rate of NF-κB positive cells,but also antiviral GSH-PX enzyme function.In conclusion,nano-encapsulation of the flavonoids extract of Artemisia rupestris L.showed an enhanced anti-HBV effect in vitro compared to the original total flavonoids extract(without nanoencapsulation);therefore,nano-encapsulation has great potential for the development of a novel antiviral herbal medicine preparation with improved efficacy.
文摘Artemisia vulgaris L. was collected from various regions in the USA and Montreal Canada. Gas Chromatography-Mass Spectrometry was used to identify the analytes present in the volatiles extracted by headspace solid-phase microextraction of the crushed leaves and flowers. Four distinct chemotypes are were found: One featuring the coexistence of ar-curcumene and α-zingiberene;two marked by the presence or absence of thujone and santolinatriene;and a fourth characterized by the presence of crysanthenyl acetate (40%). DNA was used to confirm the identity of Artemisia vulgaris L.
文摘Coccidiosis is a disease caused by protozoa of the genus Eimeria which seriously affects young rabbits. Treatment based on the use of anticoccidial drugs is increasingly ineffective due to the rapid emergence of resistant strains of coccidia and the high cost of drugs. Consumer demand for rabbit products without chemical residues led to a growing interest in the use of medicinal plants as an alternative treatment for coccidiosis. The present study was carried out during the period of August to December 2020 to assess the anticoccidial effect of hydro-ethanolic extract of leaves of Artemisia annua L., in young rabbits. The antiparasitic efficacy of Artemisia extract was tested on 15 young rabbits (whose age varied between 7 and 9 weeks) divided into 5 lots of 3 animals. The average weight of these animals was 790 g. The results of this study show that the feces samples and the weight of young rabbits before administration of the treatment and the coprological examination (every 7 days for 4 weeks) show a fecal excretion reduction rate (FECRT) of 55.13% in the lot treated by sulfonamide. On the other hand, in animals received treatments extract of the leaves of Artemisia annua L., the average FECRT is evaluated at 69.64%, 79.22%, and 96.36% for respective doses of 400, 800 and 1200 mg/kg bodyweight and proves their anticoccidial effect. Furthermore, the variation in mean Eggs Per Gram (EPG) of coccidia and the average weekly weight gain (AWWG) of each lot were significant in the lots treated with hydro-ethanolic extract (P 0.05). The greatest reductions in oocystal excretion and weight gain obtained were those of lot 5, treated at 1200 mg/kg of hydro-ethanolic leaves extract of Artemisia annua L.
基金supported by research projects 2016YFC0500907,2017FY100205,41201561,Y551821001,and 145RJYA269
文摘The genetic diversity of Artemisia halodendron(Asteraceae), a constructive and dominant species in Horqin Sandy Land,was investigated to examine the genetic relationships with different hydrothermal regions in Horqin Sandy Land. We sequenced chloroplast DNA(cp DNA) fragments(trn L–F) of 243 plants from 10 populations across the Horqin Sandy Land.The analyses of cp DNA variation identified seven haplotypes. A low level of haplotype diversity(H_d=0.706) and nucleotide diversity(π=0.0013) was detected. Haplotypes clustered into two tentative clades. Low genetic differentiation among regions was consistently indicated by hierarchical analyses of molecular variance(AMOVA). Across the sampled populations, the haplotype distributions were differentiated with hydrothermal gradients.
文摘Objective:To explore the cause and feasibility of Artemisia ordosica allergic rhinitis.Methods:The main allergic causes of allergic rhinitis patients in Chifeng City of inner Mongolia were analyzed by a control method.Results:According to the results,Artemisia ordosica is the most important cause of allergic rhinitis in inner Mongolia.In addition,allergic history,asthma and other diseases,or animal hair and other factors can also increase the risk of patients with allergic rhinitis.Conclusions:Artemisia sphaerocephala is the main cause of allergic rhinitis.In recent years,allergic rhinitis has attracted the attention of international organizations,and the medical community has also studied more methods for the treatment of rhinitis,such as putting forward relevant traditional Chinese medicine(TCM)treatment methods.
文摘Derivation conditions of pre-column derivation-HPLC method used for determinating artemisinin content were compared and selected,and artemisinin content in above-ground part of Artemisia annua L.from seventeen locations was compared by optimal pre-column derivation-HPLC method.The optimal derivation condition is selected via comparing of 0.2% NaOH solution addition(3,4,5,6 and 7 mL),derivation temperature(30 ℃,35 ℃,40 ℃,45 ℃ and 50 ℃) and derivation time(0,2,5,10,20,40 and 60 min) during derivation process.The optimal derivation condition is adding 5 mL 0.2% NaOH solution,then insulating in 40 ℃ water bath for 10 min.Differences of artemisinin content in A.annua from seventeen locations are obvious,the general trend is that artemisinin content decreases gradually with location from south to north,in which artemisinin content in A.annua from Youyang of Chongqing is the highest with a value of 7.08 mg·g-1.The method is simple and accurate with good reproducibility,and can be used to determinate artemisinin content in medicinal material of A.annua.
