title: Preparation and physicochemical properties of 10-hydroxycamptothecin (HCPT) nanoparticles by supercritical antisolvent (SAS) process.
abstract: The goal of the present work was to study the feasibility of 10-hydroxycamptothecin (HCPT) nanoparticle preparation using supercritical antisolvent (SAS) precipitation. The influences of various experimental factors on the mean particle size (MPS) of HCPT nanoparticles were investigated. The optimum micronization conditions are determined as follows: HCPT solution concentration 0.5 mg/mL, the flow rate ratio of CO(2) and HCPT solution 19.55, precipitation temperature 35 °C and precipitation pressure 20 MPa. Under the optimum conditions, HCPT nanoparticles with a MPS of 180 ± 20.3 nm were obtained. Moreover, the HCPT nanoparticles obtained were characterized by Scanning electron microscopy, Dynamic light scattering, Fourier-transform infrared spectroscopy, High performance liquid chromatography-mass spectrometry, X-ray diffraction and Differential scanning calorimetry analyses. The physicochemical characterization results showed that the SAS process had not induced degradation of HCPT. Finally, the dissolution rates of HCPT nanoparticles were investigated and the results proved that there is a significant increase in dissolution rate compared to unprocessed HCPT.
authors: Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Ministry of Education, Harbin 150040, China; E-Mails: xiuhuazhao@nefu.edu.cn (X.Z.); 644677614@qq.com (R.J.); 41611005@qq.com (Y.W.); 724506183@qq.com (Y.L.); qingyong_li@163.com (Q.L.); 156828568@qq.com (D.Z.); zubaishi@163.com (B.Z.); zhangbaoyou@163.com (B.Z.); zhiqiangshun@163.com (Z.S.); 56573995@qq.com (X.Z.).
authors: Xiuhua
authors: X
authors: Zhao
authors: Yuangang
authors: Y
authors: Zu
authors: Ru
authors: R
authors: Jiang
authors: Ying
authors: Y
authors: Wang
authors: Yong
authors: Y
authors: Li
authors: Qingyong
authors: Q
authors: Li
authors: Dongmei
authors: D
authors: Zhao
authors: Baishi
authors: B
authors: Zu
authors: Baoyou
authors: B
authors: Zhang
authors: Zhiqiang
authors: Z
authors: Sun
authors: Xiaonan
authors: X
authors: Zhang
mesh_terms: D002152:Calorimetry, Differential Scanning; D002166:Camptothecin / Q000031:analogs & derivatives* / Q000737:chemistry; D002245:Carbon Dioxide / Q000737:chemistry; D025924:Chromatography, Supercritical Fluid; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D012997:Solvents / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D012997:Solvents; D002245:Carbon Dioxide; C028098:10-hydroxycamptothecin; D002166:Camptothecin