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Intraoperative ultrasonography in hepatobiliary surgery 被引量:4
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作者 li-wu lin Zhen Ye +2 位作者 En-Sheng Xue Shang-Da Gao Yi-Mi He the Fujian Provincial Institute of Ultrasonic Medicine, Union Hospital, Fujian Medical University, Fuzhou 350001, China 《Hepatobiliary & Pancreatic Diseases International》 SCIE CAS 2002年第3期425-428,共4页
Objective: To assess the value of intraoperative ultra- sonography in hepatobiliary surgery. Methods: Aloka-650 and Aloka-500 with a 3.5 MHz probe were used in preoperative uitrasonography and those with 5 MHz or 7.5 ... Objective: To assess the value of intraoperative ultra- sonography in hepatobiliary surgery. Methods: Aloka-650 and Aloka-500 with a 3.5 MHz probe were used in preoperative uitrasonography and those with 5 MHz or 7.5 MHz probes in intraopera- tive ultrasonography. All patients with carcinoma were confirmed pathologically. Results: In 44 patients with liver cancer (76 tumors), the diagnostic rate of intraoperative ultra- sonography was 97% (74/76), which was markedly higher than 84% (64/76) of preoperative ultra- sonography (P<0.05). The diagnostic rate (92%; 22/24) of intraoperative ultrasonography for tumors ≤2 cm in diameter was markedly higher than that (54%; 13/24) of preoperative ultrasonography (P< 0.01). The diagnostic rate (94%; 16/17) of intra- operative ultrasonography for tumor embulus of the vein was also markedly higher than that (53%; 9/ 17) of preoperative ultrasonography (P<0.01). The diagnostic rates of intraoperative and preoperative ultrasonography for cholelithiasis were 99% (108/ 109) and 97% (106/109) respectively (P>0.05). Yet the diagnostic rate (100%; 12/12) of intraopera- tive ultrasonography for gallbladder carcinoma was markedly higher than that (66.7%; 8/12) of pre- operative ultrasonography (P<0.05). The diagnos- tic rates of intraoperative ultrasonography for chole- docholith and biliary tract cancer were all 100%, markedly higher than those (83%; 20/24 and 75%; 12/16) of preoperative ultrasonography (P<0.05). Conclusions: Intraoperative ultrasonography can raise the detective rate of the liver occupying lesions comparing with that of preoperative untrasonogra- phy. It is of valuable in selecting operative scheme and locating small lesions. 展开更多
关键词 intraoperative ultrasonography preoperative ultrasonography HEPATOBILIARY SURGERY
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Structural characterizations andα-glucosidase inhibitory activities of four Lepidium meyenii polysaccharides with different molecular weights
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作者 Luan Wen Zhou-Wei Wu +3 位作者 li-wu lin Abdulbaset Al-Romaima Xing-Rong Peng Ming-Hua Qiu 《Natural Products and Bioprospecting》 CSCD 2023年第1期568-576,共9页
Four polysaccharides(MCPa,MCPb,MCPc,MCPd)were obtained from Lepidium meyenii Walp.Their structures were characterized by chemical and instrumental methods including total sugar,uronic acid and protein content determi-... Four polysaccharides(MCPa,MCPb,MCPc,MCPd)were obtained from Lepidium meyenii Walp.Their structures were characterized by chemical and instrumental methods including total sugar,uronic acid and protein content determi-nation,UV,IR and NMR spectroscopy,as well as monosaccharide composition determination and methylation analy-ses.Four polysaccharides were a group of glucans with different molecular weights ranging from 3.12 to 14.4 kDa,and shared a similar backbone chain consisting of(1→4)-glucose linkages with branches attached to C-3 and C-6.Furthermore,bioactivity assay showed that MCPs had concentration-dependent inhibitory activity onα-glucosidase.MCPb(Mw=10.1 kDa)and MCPc(Mw=5.62 kDa)with moderate molecular weights exhibited higher inhibitory activ-ity compared with MCPa and MCPd. 展开更多
关键词 Lepidium meyenii POLYSACCHARIDE Molecular weight Structural characterization α-Glucosidase inhibition
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Four undescribed pyrethrins from seeds of Pyrethrum cinerariifolium and their aphidicidal activity
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作者 Hao-Ran Zhou li-wu lin +2 位作者 Zhong-Rong Li Xing-Rong Peng Ming-Hua Qiu 《Natural Products and Bioprospecting》 CSCD 2023年第1期528-536,共9页
Four undescribed pyrethrins C-F(1-4)as well as four known pyrethrins(5-8)were isolated from seeds of Pyrethrum cinerariifolium Trev.The structures of compounds 1-4 were elucidated by UV,HRESIMS,and NMR(^(1)H and ^(13)... Four undescribed pyrethrins C-F(1-4)as well as four known pyrethrins(5-8)were isolated from seeds of Pyrethrum cinerariifolium Trev.The structures of compounds 1-4 were elucidated by UV,HRESIMS,and NMR(^(1)H and ^(13)C NMR,^(1)H-^(1)H COSY,HSQC,HMBC and ROESY),among which the stereostructure of compound 4 was determined by calcu-lated ECD.Furthermore,compounds 1-4 were evaluated for their aphidicidal activities.The insecticidal assay results showed that 1-4 exhibited moderate aphidicidal activities at the concentration of 0.1 mg/mL with the 24 h mortality rates ranging from 10.58 to 52.98%.Among them,pyrethrin D(2)showed the highest aphidicidal activity,with the 24 h mortality rate of 52.98%,which was slightly lower than the positive control(pyrethrin II,83.52%). 展开更多
关键词 Pyrethrum cinerariifolium PYRETHRINS Aphidicidal activity
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