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PREPARATION AND CHARACTERIZATION OF GLYCYRRHETINIC ACID-MODIFIED POLOXAMER 188/CHITOSAN NANOPARTICLES ºÍ Two new naphthoquinone derivatives from Lysionotus pauciflorus. |
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- LS-EPI: 1647
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- ×¢²á: 2008-12-18
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yaolan123: ½ð±Ò+2, ¸ÐлӦÖú£¬½±ÀøÒ»Ï 2013-11-08 14:08:10
jssxh: ¼ìË÷EPI+1, лл²ÎÓ룬Çë¼ÌÐø¹Ø×¢±¾°æ¿é£¡ 2013-12-16 09:21:53
yaolan123: ½ð±Ò+2, ¸ÐлӦÖú£¬½±ÀøÒ»Ï 2013-11-08 14:08:10
jssxh: ¼ìË÷EPI+1, лл²ÎÓ룬Çë¼ÌÐø¹Ø×¢±¾°æ¿é£¡ 2013-12-16 09:21:53
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1. http://apps.webofknowledge.com/f ... age=1&doc=1 PREPARATION AND CHARACTERIZATION OF GLYCYRRHETINIC ACID-MODIFIED POLOXAMER 188/CHITOSAN NANOPARTICLES ×÷Õß: Wang, J (Wang, Jing)[ 1 ] ; Guo, L (Guo, Li)[ 2 ] ; Ma, LF (Ma, Li Fang)[ 1 ] À´Ô´³ö°æÎï: NANO ¾í:8 ÆÚ:4 ÎÄÏ׺Å:1350042 DOI:10.1142/S1793292013500422 ³ö°æÄê:AUG 2013 ±»ÒýƵ´Î: 0 (À´×Ô Web of Science) ÒýÓõIJο¼ÎÄÏ×: 12 [ ²é¿´ Related Records ] ÒýÖ¤¹ØÏµÍ¼ ÕªÒª: In this paper, we firstly synthesized glycyrrhetinic acid-modified double amino-terminated poloxamer 188 (GA-NH-POLO-NH-GA). The structure of the synthesized compound was confirmed by 1 H-NMR and Fourier transform infrared (FT-IR) spectroscopy. Then the nano-particles composed of GA-NH-POLO-NH-GA/chitosan (GA-NH-POLO-NH-GA/CTS) were prepared by an ionic gelation process. The characterization of the nanoparticles was measured by dynamic light scattering (DLS) and scanning electron microscope (SEM). The results showed that the nanoparticles were well dispersed with a spherical shape and the particle size was distributed between 100 nm and 300 nm. The cytotoxicity based on MTT assay against cells (QGY-7703 cells and L929 cells) showed that the nanoparticles had low toxicity and good biocompatibility. The encapsulation efficiency and drug loading of 5-fluorouracil-loaded nanoparticles (5-FU nanoparticles) were measured by high-performance liquid chromatography (HPLC) and fluorescence spectroscopy, ultraviolet-visible (UV-vis) absorbance. The encapsulation of 5-Fu-loaded CTS nanoparticles was 12.8% and the drug loading was 2.9%, while the encapsulation of 5-Fu-loaded GA-NH-POLO-NH-GA/CTS nanoparticles was 20.9% and the drug loading was 3.36%. The release profile showed that the GA-NH-POLO-NH-GA/CTS nanoparticles were available for sustained release of 5-Fu. The GA-NH-POLO-NH-GA/CTS nanoparticles have a higher affinity to the QGY-7703 cells, so indicated that the GA-NH-POLO-NH-GA/CTS nanoparticles have the capacity of liver-targeting in vitro. Èë²ØºÅ:WOS:000321954700009 ÎÄÏ×ÀàÐÍ: Article ÓïÖÖ: English ×÷Õ߹ؼü´Ê: Glycyrrhetinic acid; poloxamer 188; chitosan; nanoparticles; sustained release; liver-targeting KeyWords Plus: CANCER-THERAPY; CHITOSAN ͨѶ×÷ÕßµØÖ·: Ma, LF (ͨѶ×÷Õß) Sichuan Univ, Dept Pharmaceut & Biol Engn, Chengdu 610065, Peoples R China. µØÖ·: [ 1 ] Sichuan Univ, Dept Pharmaceut & Biol Engn, Chengdu 610065, Peoples R China [ 2 ] Sichuan Univ, Key Lab Drug Targeting & Drug Delivery Syst, Educ Minist, Dept Med Chem,West China Sch Pharm, Chengdu 610041, Peoples R China µç×ÓÓʼþµØÖ·: wangjingrose3@163.com; rosaguoli2000@yahoo.com.cn; MLfang11@126.com ³ö°æÉÌ:WORLD SCIENTIFIC PUBL CO PTE LTD, 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE Web of Science Àà±ð: Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied Ñо¿·½Ïò: Science & Technology - Other Topics; Materials Science; Physics IDS ºÅ:185GJ ISSN:1793-2920 |
2Â¥2013-11-08 10:48:13
baiyuefei
°æÖ÷ (ÎÄѧ̩¶·)
·çÑ©
- LS-EPI: 1647
- Ó¦Öú: 4642 (¸±½ÌÊÚ)
- ¹ó±ö: 46.969
- ½ð±Ò: 658104
- É¢½ð: 11616
- ºì»¨: 995
- ɳ·¢: 81
- Ìû×Ó: 69424
- ÔÚÏß: 13328.4Сʱ
- ³æºÅ: 676696
- ×¢²á: 2008-12-18
- ÐÔ±ð: GG
- רҵ: ºÏ³ÉÒ©Îﻯѧ
- ¹ÜϽ: Óлú½»Á÷
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yaolan123: ½ð±Ò+2, ¸ÐлӦÖú£¬½±ÀøÒ»Ï 2013-11-08 14:08:16
zhongyujiao(½ÄϵÄÖñ´ú·¢): ½ð±Ò+10 2014-03-06 20:49:20
yaolan123: ½ð±Ò+2, ¸ÐлӦÖú£¬½±ÀøÒ»Ï 2013-11-08 14:08:16
zhongyujiao(½ÄϵÄÖñ´ú·¢): ½ð±Ò+10 2014-03-06 20:49:20
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2. °´ÕÕÄã¸øµÄ±êÌâδ¼ìË÷µ½£¬ÓиöÀàËÆµÄ²»ÖªÊÇ·ñÊÇÄãÐèÒªµÄ£¬Äã¿É×Ô¼º¼ìË÷Ï¿´¿´ http://apps.webofknowledge.com/f ... age=1&doc=1 Two New Naphthoquinone Derivatives from the Stem Bark of Callicarpa maingayi ×÷Õß: Asiri, SM (Asiri, Sumayah Mohammed)[ 1 ] ; Shaari, K (Shaari, Khozirah)[ 1,2 ] ; Abas, F (Abas, Faridah)[ 1,3 ] ; Al-Mekhlafi, NA (Al-Mekhlafi, Nabil Ali)[ 1 ] ; Lajis, NH (Lajis, Nordin H.)[ 1 ] À´Ô´³ö°æÎï: NATURAL PRODUCT COMMUNICATIONS ¾í:7 ÆÚ:10 Ò³:1333-1336 ³ö°æÄê:OCT 2012 ±»ÒýƵ´Î: 0 (À´×Ô Web of Science) ÒýÓõIJο¼ÎÄÏ×: 15 [ ²é¿´ Related Records ] ÒýÖ¤¹ØÏµÍ¼ ÕªÒª: Two new naphthoquinones designated as 3 alpha-hydroxy-2-(2-hydroxypropan-2-yl)-9 alpha-methoxy-2,3,3 alpha,9 alpha-tetra-hydronaphtho[2,3-b]furan-4,9-dione (callicarpaquinone A, 1) and 5-hydroxy-2-(2-hydroxypropan-2-yl)naphtho[2,3-b]furan-4,9-dione (callicarpaquinone B, 2) were isolated from the chloroform fraction of Callicarpa maingayi. Three other known compounds, identified as avicequinone-C (3), wodeshiol (4) and paulownin (5), were reported for the first time from this species. The structure elucidation of compounds was established by comprehensive 1D and 2D NMR spectroscopic analyses as well as EIMS, UV and IR spectral data. Compounds 1 and 2 were tested in vitro for their cytotoxic activity against human breast cancer MCF-7cells. Compound 2 exhibited strong cytotoxic activity with an IC50 value of 1.9 +/- 0.2 mu M, while 1 showed moderate activity with an IC50 value of 25.0 +/- 4.3 mu M. Èë²ØºÅ:WOS:000310189200021 ÎÄÏ×ÀàÐÍ: Article |
3Â¥2013-11-08 10:51:54













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