Osteocytes reside as three-dimensionally（3D） networked cells in the lacunocanalicular structure of bones and regulate bone and mineral homeostasis. Despite of their important regulatory roles, in vitro studies of os...Osteocytes reside as three-dimensionally（3D） networked cells in the lacunocanalicular structure of bones and regulate bone and mineral homeostasis. Despite of their important regulatory roles, in vitro studies of osteocytes have been challenging because：（1） current cell lines do not sufficiently represent the phenotypic features of mature osteocytes and（2） primary cells rapidly differentiate to osteoblasts upon isolation. In this study, we used a 3D perfusion culture approach to：（1） construct the 3D cellular network of primary murine osteocytes by biomimetic assembly with microbeads and（2） reproduce ex vivo the phenotype of primary murine osteocytes, for the first time to our best knowledge. In order to enable 3D construction with a sufficient number of viable cells, we used a proliferated osteoblastic population of healthy cells outgrown from digested bone chips. The diameter of microbeads was controlled to：（1） distribute and entrap cells within the interstitial spaces between the microbeads and（2） maintain average cell-to-cell distance to be about 19 mm. The entrapped cells formed a 3D cellular network by extending and connecting their processes through openings between the microbeads. Also, with increasing culture time, the entrapped cells exhibited the characteristic gene expressions（SOST and FGF23） and nonproliferative behavior of mature osteocytes. In contrast, 2D-cultured cells continued their osteoblastic differentiation and proliferation. This 3D biomimetic approach is expected to provide a new means of：（1） studying flow-induced shear stress on the mechanotransduction function of primary osteocytes,（2） studying physiological functions of 3D-networked osteocytes with in vitro convenience,and（3） developing clinically relevant human bone disease models.展开更多
[Objectives] To establish a method for determining the content of Laggera alata( D. Don) Sch. Bip. Ex Oliv. using caffeic acid the target component,and to compare the content of caffeic acid in the medicinal materials...[Objectives] To establish a method for determining the content of Laggera alata( D. Don) Sch. Bip. Ex Oliv. using caffeic acid the target component,and to compare the content of caffeic acid in the medicinal materials of L. alata in different production areas of Guangxi.[Methods]The content was determined by Inertsil~ODS-3 chromatographic column C_(18)( 4. 60 mm × 250 mm,5 μm,mobile phase: acetonitrile-0. 1% phosphoric acid( 22∶ 78),detection wavelength: 320 nm,flow rate: 1. 0 m L/min,column temperature: 30℃,and injection volume: 10 μL. [Results] The caffeic acid showed a good linear relationship in the range of injection volume of 0. 025 92-0. 259 2 μg( R =0. 999 5). The average recovery rate was 98. 33%( RSD = 1. 85%). L. alata in different production areas of Guangxi contained the caffeic acid,and there was a great difference in the caffeic acid. L. alata in Baise had the highest content of caffeic acid,while that in Guilin had the lowest content of caffeic acid. [Conclusions]This method can accurately determine the content of caffeic acid and is expected provide a scientific basis for the development and utilization of herbal medicine L. alata.展开更多
[Objectives]This study aimed to investigate the intervention effects of ethanol extract of Laggera alata(D.Don)Sch.Bip.ex Oliv on cirrhotic rats with ascites.[Methods]A total of 100 male SD rats of SPF grade were used...[Objectives]This study aimed to investigate the intervention effects of ethanol extract of Laggera alata(D.Don)Sch.Bip.ex Oliv on cirrhotic rats with ascites.[Methods]A total of 100 male SD rats of SPF grade were used.Rat models of cirrhosis and ascites were established.After the last administration,the amount of peritoneal fluid was measured,and the blood of each rat tested was collected for determination of serum AST,ALT and ALB levels,serum K+concentration and plasma Ald level.[Results]In ascitic cirrhotic rats,the livers showed obvious enlargement,the surface of the livers was uneven,and nodules were visible.Compared with the blank group,the amount of peritoneal fluid in the model group increased significantly(P<0.01);and compared with the model group,the amounts of peritoneal fluid in the high and medium-dose ethanol extract groups reduced significantly(P<0.01).Compared with the blank group,the serum ALT and AST levels in the model group increased significantly(P<0.01);and compared with the model group,the serum ALT and AST levels in the high-dose ethanol extract group decreased significantly(P<0.05).Compared with the blank group,the serum K+concentration in the positive group reduced(P<0.05);no significant difference was found in serum K+concentration between the ethanol extract administration groups and the blank group(P>0.05).Compared with the blank group,the plasma Ald levels in the high-dose ethanol extract group and the positive group reduced(P<0.05);and there was no significant difference in serum K+concentration between the rest groups and the blank group(P>0.05).[Conclusions]In the ethanol extract administration groups,the amounts of peritoneal fluid significantly reduced,the serum ALT and AST reduced,and the liver functions improved to a certain extent,indicating that the ethanol extract of L.alata(D.Don)Sch.Bip.ex Oliv has a better correction effect on electrolyte disturbances in cirrhotic rats with ascites.展开更多
[Objectives]To establish a quality analysis method for Yao medicine Damnacanthus macrophyllus Sieb.ex Miq.var.giganteus(Makino)Koidz..[D.indicus Gaertn.f.var.giganteus Makino].[Methods]The moisture,total ash and alcoh...[Objectives]To establish a quality analysis method for Yao medicine Damnacanthus macrophyllus Sieb.ex Miq.var.giganteus(Makino)Koidz..[D.indicus Gaertn.f.var.giganteus Makino].[Methods]The moisture,total ash and alcohol extracts of D.macrophyllus medicinal materials were determined according to the experimental methods in the Chinese Pharmacopoeia(2020).[Results]All the 10 batches of D.macrophyllus medicinal materials from different collection times and different regions in Guangxi had the same plant morphological characteristics.The experimental results indicate that the moisture was 9.81%-11.52%,the total ash content was 7.37%-9.53%,the acid-insoluble ash content was 1.10%-1.97%,and the extract was 8.25%-10.22%.[Conclusions]This study provides a scientific basis for establishing a quality standard for Yao medicine D.macrophyllus medicinal materials,and it is expected to better utilize and develop D.macrophyllus.展开更多
目的对头花蓼(Polygonum capitatum Buch-Ham ex D.Don)体积分数为70%的乙醇溶液提取物的化学成分进行研究。方法利用各种色谱技术进行分离纯化,根据理化性质和波谱数据进行结构鉴定。结果得到11个化合物,分别鉴定为:槲皮素(1)、山柰酚...目的对头花蓼(Polygonum capitatum Buch-Ham ex D.Don)体积分数为70%的乙醇溶液提取物的化学成分进行研究。方法利用各种色谱技术进行分离纯化,根据理化性质和波谱数据进行结构鉴定。结果得到11个化合物,分别鉴定为:槲皮素(1)、山柰酚(2)、槲皮苷(3)、原儿茶酸(4)、没食子酸(5)、原儿茶酸乙酯(6)、没食子酸乙酯(7)、香草酸(8)、1,5,7-三羟基-3-甲基蒽醌(9)、琥珀酸(10)、5-羟甲基糠醛(11)。结论化合物6、7、9、11为首次从该属植物中分离得到。展开更多
基金the National Institute of Arthritis and Musculoskeletal and Skin Diseases of the National Institutes of Health (1R21AR065032 to W.Y.L and J.Z.)the National Science Foundation (DMR 1409779 to W.Y.L and J.Z.)
文摘Osteocytes reside as three-dimensionally（3D） networked cells in the lacunocanalicular structure of bones and regulate bone and mineral homeostasis. Despite of their important regulatory roles, in vitro studies of osteocytes have been challenging because：（1） current cell lines do not sufficiently represent the phenotypic features of mature osteocytes and（2） primary cells rapidly differentiate to osteoblasts upon isolation. In this study, we used a 3D perfusion culture approach to：（1） construct the 3D cellular network of primary murine osteocytes by biomimetic assembly with microbeads and（2） reproduce ex vivo the phenotype of primary murine osteocytes, for the first time to our best knowledge. In order to enable 3D construction with a sufficient number of viable cells, we used a proliferated osteoblastic population of healthy cells outgrown from digested bone chips. The diameter of microbeads was controlled to：（1） distribute and entrap cells within the interstitial spaces between the microbeads and（2） maintain average cell-to-cell distance to be about 19 mm. The entrapped cells formed a 3D cellular network by extending and connecting their processes through openings between the microbeads. Also, with increasing culture time, the entrapped cells exhibited the characteristic gene expressions（SOST and FGF23） and nonproliferative behavior of mature osteocytes. In contrast, 2D-cultured cells continued their osteoblastic differentiation and proliferation. This 3D biomimetic approach is expected to provide a new means of：（1） studying flow-induced shear stress on the mechanotransduction function of primary osteocytes,（2） studying physiological functions of 3D-networked osteocytes with in vitro convenience,and（3） developing clinically relevant human bone disease models.
基金Supported by Project of National Natural Science Foundation(81660701&81260673)Project of Guangxi Graduate Education Innovation(YJS201625)+2 种基金Natural Science Foundation Project of Guangxi(2016GXNSFAA380148&2014GXNSFAA118208)Program of Key Laboratory for Purification and Quality Analysis of TCM Extraction in Guangxi Universities(Gui Jiao Ke Yan[2014]No.6)Laboratory of Chemistry and Quality Analysis in the Third Level Laboratory for Research of TCM(Zhuang)of State Administration of Traditional Chinese Medicine(Guo Zhong Yi Yao Fa[200]No.21)
文摘[Objectives] To establish a method for determining the content of Laggera alata( D. Don) Sch. Bip. Ex Oliv. using caffeic acid the target component,and to compare the content of caffeic acid in the medicinal materials of L. alata in different production areas of Guangxi.[Methods]The content was determined by Inertsil~ODS-3 chromatographic column C_(18)( 4. 60 mm × 250 mm,5 μm,mobile phase: acetonitrile-0. 1% phosphoric acid( 22∶ 78),detection wavelength: 320 nm,flow rate: 1. 0 m L/min,column temperature: 30℃,and injection volume: 10 μL. [Results] The caffeic acid showed a good linear relationship in the range of injection volume of 0. 025 92-0. 259 2 μg( R =0. 999 5). The average recovery rate was 98. 33%( RSD = 1. 85%). L. alata in different production areas of Guangxi contained the caffeic acid,and there was a great difference in the caffeic acid. L. alata in Baise had the highest content of caffeic acid,while that in Guilin had the lowest content of caffeic acid. [Conclusions]This method can accurately determine the content of caffeic acid and is expected provide a scientific basis for the development and utilization of herbal medicine L. alata.
基金Guangxi Young and Middle-aged University Teachers'Scientific Research Ability Enhancement Project(No.2019KY0341)Foundation of Administration of Traditional Chinese Medicine of Guangxi Zhuang Autonomous Region(No.GZZC2019147)+2 种基金Youth Foundation of Guangxi University of Chinese Medicine(No.2019QN036)University-level Scientific Research Project of Youjiang Medical University for Nationalities(yy2018ky018)Scientific Research Laboratories of National Administration of Traditional Chinese Medicine(Level III):Chemistry and Quality Analysis Laboratory of Chinese(Zhuang)Medicine(Guo Zhong Yi Yao Fa 2009[21]).
文摘[Objectives]This study aimed to investigate the intervention effects of ethanol extract of Laggera alata(D.Don)Sch.Bip.ex Oliv on cirrhotic rats with ascites.[Methods]A total of 100 male SD rats of SPF grade were used.Rat models of cirrhosis and ascites were established.After the last administration,the amount of peritoneal fluid was measured,and the blood of each rat tested was collected for determination of serum AST,ALT and ALB levels,serum K+concentration and plasma Ald level.[Results]In ascitic cirrhotic rats,the livers showed obvious enlargement,the surface of the livers was uneven,and nodules were visible.Compared with the blank group,the amount of peritoneal fluid in the model group increased significantly(P<0.01);and compared with the model group,the amounts of peritoneal fluid in the high and medium-dose ethanol extract groups reduced significantly(P<0.01).Compared with the blank group,the serum ALT and AST levels in the model group increased significantly(P<0.01);and compared with the model group,the serum ALT and AST levels in the high-dose ethanol extract group decreased significantly(P<0.05).Compared with the blank group,the serum K+concentration in the positive group reduced(P<0.05);no significant difference was found in serum K+concentration between the ethanol extract administration groups and the blank group(P>0.05).Compared with the blank group,the plasma Ald levels in the high-dose ethanol extract group and the positive group reduced(P<0.05);and there was no significant difference in serum K+concentration between the rest groups and the blank group(P>0.05).[Conclusions]In the ethanol extract administration groups,the amounts of peritoneal fluid significantly reduced,the serum ALT and AST reduced,and the liver functions improved to a certain extent,indicating that the ethanol extract of L.alata(D.Don)Sch.Bip.ex Oliv has a better correction effect on electrolyte disturbances in cirrhotic rats with ascites.
基金National Traditional Chinese Medicine Characteristic Technology Heritage Talent Training Program(20184828005)General Program of Guangxi University of Chinese Medicine in 2020(2020MS063)+1 种基金Preparation Quality Improvement Project of Traditional Chinese Medicine Zhuang and Yao Medicine Hospital of Traditional Chinese Medicine Administration of Guangxi Zhuang Autonomous Region(GZZJ202013&GZZJ202015)Project for Improving Basic Research Ability of Middle Aged and Young Teachers in Colleges and。
文摘[Objectives]To establish a quality analysis method for Yao medicine Damnacanthus macrophyllus Sieb.ex Miq.var.giganteus(Makino)Koidz..[D.indicus Gaertn.f.var.giganteus Makino].[Methods]The moisture,total ash and alcohol extracts of D.macrophyllus medicinal materials were determined according to the experimental methods in the Chinese Pharmacopoeia(2020).[Results]All the 10 batches of D.macrophyllus medicinal materials from different collection times and different regions in Guangxi had the same plant morphological characteristics.The experimental results indicate that the moisture was 9.81%-11.52%,the total ash content was 7.37%-9.53%,the acid-insoluble ash content was 1.10%-1.97%,and the extract was 8.25%-10.22%.[Conclusions]This study provides a scientific basis for establishing a quality standard for Yao medicine D.macrophyllus medicinal materials,and it is expected to better utilize and develop D.macrophyllus.
文摘目的对头花蓼(Polygonum capitatum Buch-Ham ex D.Don)体积分数为70%的乙醇溶液提取物的化学成分进行研究。方法利用各种色谱技术进行分离纯化,根据理化性质和波谱数据进行结构鉴定。结果得到11个化合物,分别鉴定为:槲皮素(1)、山柰酚(2)、槲皮苷(3)、原儿茶酸(4)、没食子酸(5)、原儿茶酸乙酯(6)、没食子酸乙酯(7)、香草酸(8)、1,5,7-三羟基-3-甲基蒽醌(9)、琥珀酸(10)、5-羟甲基糠醛(11)。结论化合物6、7、9、11为首次从该属植物中分离得到。
