A new amino-acid Schiff base, 1-phenyl-3-methyl-4-(2-thenoyl) pyrazolone-5-β-alanine (HL) and its ten rare earth complexes have been synthesized. On the basis of elemental analysis and molar conductance, the general ...A new amino-acid Schiff base, 1-phenyl-3-methyl-4-(2-thenoyl) pyrazolone-5-β-alanine (HL) and its ten rare earth complexes have been synthesized. On the basis of elemental analysis and molar conductance, the general formula of the complexes, ·nH2O (RE=La, Nd, Eu, Tb, Y, n=2; RE= Pr, Sm, n=1; RE= Dy, Er, Yb, n=3), is given. They were characterized by IR, UV-visible, 1H NMR, 13C NMR and fluorescence. The results show that the rare earth ions exhibit coordination of eight in the complexes.The antibacterial experiments indicate that they have high antibacterial activities against S. Aureus, B. Subtillis, E. Coli, E. Carotovora and C. Flaccumfaciens.展开更多
目的应用Ion Torrent半导体靶向测序技术检测1例枫糖尿症(MSUD)患儿的致病基因突变,明确其致病突变,并探讨该技术用于复杂单基因病检测的可行性。方法采集患儿外周血,提取基因组DNA,经多重PCR扩增富集目的基因片段,构建平均片段大小为30...目的应用Ion Torrent半导体靶向测序技术检测1例枫糖尿症(MSUD)患儿的致病基因突变,明确其致病突变,并探讨该技术用于复杂单基因病检测的可行性。方法采集患儿外周血,提取基因组DNA,经多重PCR扩增富集目的基因片段,构建平均片段大小为300bp左右的文库,经乳液PCR及磁珠颗粒富集,最后采用318半导体测序芯片进行高通量测序,应用Ion Torrent Suite v3.0软件进行数据提取、序列比对及SNPs和Indels提取,再用dbSNP 137数据库过滤得到SNPs和Indels,可疑突变经Sanger法测序验证。结果检出患儿1个新发错义点突变并通过Sanger测序验证,突变是BCKDHB基因第6外显子的NM183050:c.586C>T(p.His196Tyr)。结论 Ion Torrent半导体靶向测序技术可对复杂单基因遗传病进行快速、准确地基因诊断。展开更多
This research was to examine if rice (Oryza sativa L.), a monocotyledon of angiosperm, was able to synthesize chlorophyll (Chl) in complete darkness. Five-cm-tall etiolated seedlings of rice were used as starting mate...This research was to examine if rice (Oryza sativa L.), a monocotyledon of angiosperm, was able to synthesize chlorophyll (Chl) in complete darkness. Five-cm-tall etiolated seedlings of rice were used as starting materials and treated with or without various concentrations of glucose and/or δ-aminolevulinic acid (ALA) in the dark. Leaves harvested at the indicated time were determined for their contents of Chl, protoporphyrin Ⅸ (Proto), Mg-protoporphyrin Ⅸ (Mg-Proto) and protochlorophyllide (Pchlide). The mole percentage of porphyrin was calculated. The Chl content in the etiolated rice seedlings slightly increased from about 2.5 μg/g to 7.5 μg/g within 12 d in the dark, but the total Chl of dark-grown rice increased from 0.36 μg/g to 3.6 μg/g. While the mole percentages of Proto, Mg-Proto and Pchlide in the dark-grown seedlings without any treatment were about 65%, 27.5% and 7.5% at the beginning, respectively, those in the light-grown seedlings were about 42.5%, 35% and 22.5%, respectively. The mole percentage of porphyrin of etiolated seedlings resumed its normal ratio within 2 d after treatment with glucose. While the Chl content of etiolated seedlings grown in culture solution with 3% and 6% glucose increased 2.5 and 4.0 folds, respectively, those with 3% and 6% glucose and 1 mmol/L ALA increased 22 and 24 folds, respectively. It is concluded that angiosperm might be able to synthesize a small amount of Chl in complete darkness, that either glucose or ALA could stimulate dark Chl synthesis in angiosperm, and that a combination of glucose and ALA exhibited an additional effect. It is still unknown and remains to be further explored what is the mechanism of the effect of glucose and ALA on the Chl synthesis of rice in the dark.展开更多
Objective To investigate the efficacy and safety of photodynamic therapy （PDT） with topical 5-aminolaevulinic acid （ALA） on cervical condylomata acuminata. Methods Patients with cervical condylomata （n=30） were...Objective To investigate the efficacy and safety of photodynamic therapy （PDT） with topical 5-aminolaevulinic acid （ALA） on cervical condylomata acuminata. Methods Patients with cervical condylomata （n=30） were allocated into primary and recurrent group, and were given topical ALA under occlusive dressing for 3 hours followed by irradiation with semiconductor laser at a dose of 100 Jcm 2 and a power of 100 roW. The treatment was repeated 7 days later if the lesion was not completely removed after the first treatment. Complete response rate and recurrence rate of wart lesions as well as rate of adverse reaction were analyzed. Results The total complete response rate of PDT was 100% and the total recurrence rate was 5% after 3 months of follow-up. Recurrence rate of recurrent group was significantly lower than that of prior managements （100%, P〈0.01）. The side effects of PDT in patients mainly included mild burning and/or stinging restricted to the illuminated areas, and was significant lower than their own control （25% vs. 100%, P〈0.05）. Conclusion Compared with conventional therapies, topical application of ALA-PDT is a simple, effective, safe, well-tolerated, and low recurrence rate treatment for cervical condylomata acuminata.展开更多
Tung oil-based polyols were synthesized by the esterification and transesterification between Tung oilbased anhydride and butanediol. The hydroxyl values of the polyols prepared were tested and discussed. Polyurethane...Tung oil-based polyols were synthesized by the esterification and transesterification between Tung oilbased anhydride and butanediol. The hydroxyl values of the polyols prepared were tested and discussed. Polyurethane was prepared by using Tung oil-based polyols and/or poly(propylene glycol) as polyols and by using isophorone diisocyanate as isocyanate. The effect of the ratio of Tung oil-based polyols to poly(propylene glycol) on the properties of polyurethane prepared was investigated by the water resistance, alcohol resistance and hardness tests. The results show that Tung oil-based polyols are effective to improve the hardness, water resistance and alcohol resistance of polyurethane.展开更多
Objective To use δ-aminolevulinic acid induced photodynamic therapy (ALA-PDT) increasingly in treating skin cancers and other diseases in many countries and to explore the efficacy of ALA-PDT for skin cancers in Chi...Objective To use δ-aminolevulinic acid induced photodynamic therapy (ALA-PDT) increasingly in treating skin cancers and other diseases in many countries and to explore the efficacy of ALA-PDT for skin cancers in China. Methods Eighty-eight patients, including 34 cases of basal cell carcinoma (BCC), 32 cases of squamous cell carcinoma (SCC), two cases of basal-squamous cell carcinoma (BSCC), one case of verrucuous carcinoma, nine cases of Bowen disease, two cases Paget disease of the nipple and eight cases of extramammary Paget disease, were treated by the δ-aminolevulinic acid induced photodynamic therapy first in China from 1997 to 2000. Results All BCC, including 11 cases of superficial lesions and 29 solid lesions, achieved complete reaction (CR) by 1-4 times of the ALA-PDT. Except one patient with adenoid SCC (grade Ⅲ), all SCC (grade Ⅰ and grade Ⅱ) patients achieved complete remission by 3-6 times of ALA-PDT. All Bowen diseases achieved complete reaction by 1-4 times. Although for Paget diseases it could not cure the disease simply by ALA-PDT, it could control the symptoms. The recurrence rates were 11% (4/34) for BCC, and 22% (7/32) for SCC by following up 1-3 years after the therapy. The continuous therapy is still effective. Conclusions ALA-PDT is an effective, non-traumatic treatment for patients with BCC, SCC, Bowen and Paget diseases. It is especially suitable for older and weaker patients or those who are not tolerable to other therapies. It also has a unique advantage for tumors in specific anatomical areas. It is a new alternative modality for skin cancer therapies.展开更多
文摘A new amino-acid Schiff base, 1-phenyl-3-methyl-4-(2-thenoyl) pyrazolone-5-β-alanine (HL) and its ten rare earth complexes have been synthesized. On the basis of elemental analysis and molar conductance, the general formula of the complexes, ·nH2O (RE=La, Nd, Eu, Tb, Y, n=2; RE= Pr, Sm, n=1; RE= Dy, Er, Yb, n=3), is given. They were characterized by IR, UV-visible, 1H NMR, 13C NMR and fluorescence. The results show that the rare earth ions exhibit coordination of eight in the complexes.The antibacterial experiments indicate that they have high antibacterial activities against S. Aureus, B. Subtillis, E. Coli, E. Carotovora and C. Flaccumfaciens.
文摘目的应用Ion Torrent半导体靶向测序技术检测1例枫糖尿症(MSUD)患儿的致病基因突变,明确其致病突变,并探讨该技术用于复杂单基因病检测的可行性。方法采集患儿外周血,提取基因组DNA,经多重PCR扩增富集目的基因片段,构建平均片段大小为300bp左右的文库,经乳液PCR及磁珠颗粒富集,最后采用318半导体测序芯片进行高通量测序,应用Ion Torrent Suite v3.0软件进行数据提取、序列比对及SNPs和Indels提取,再用dbSNP 137数据库过滤得到SNPs和Indels,可疑突变经Sanger法测序验证。结果检出患儿1个新发错义点突变并通过Sanger测序验证,突变是BCKDHB基因第6外显子的NM183050:c.586C>T(p.His196Tyr)。结论 Ion Torrent半导体靶向测序技术可对复杂单基因遗传病进行快速、准确地基因诊断。
文摘This research was to examine if rice (Oryza sativa L.), a monocotyledon of angiosperm, was able to synthesize chlorophyll (Chl) in complete darkness. Five-cm-tall etiolated seedlings of rice were used as starting materials and treated with or without various concentrations of glucose and/or δ-aminolevulinic acid (ALA) in the dark. Leaves harvested at the indicated time were determined for their contents of Chl, protoporphyrin Ⅸ (Proto), Mg-protoporphyrin Ⅸ (Mg-Proto) and protochlorophyllide (Pchlide). The mole percentage of porphyrin was calculated. The Chl content in the etiolated rice seedlings slightly increased from about 2.5 μg/g to 7.5 μg/g within 12 d in the dark, but the total Chl of dark-grown rice increased from 0.36 μg/g to 3.6 μg/g. While the mole percentages of Proto, Mg-Proto and Pchlide in the dark-grown seedlings without any treatment were about 65%, 27.5% and 7.5% at the beginning, respectively, those in the light-grown seedlings were about 42.5%, 35% and 22.5%, respectively. The mole percentage of porphyrin of etiolated seedlings resumed its normal ratio within 2 d after treatment with glucose. While the Chl content of etiolated seedlings grown in culture solution with 3% and 6% glucose increased 2.5 and 4.0 folds, respectively, those with 3% and 6% glucose and 1 mmol/L ALA increased 22 and 24 folds, respectively. It is concluded that angiosperm might be able to synthesize a small amount of Chl in complete darkness, that either glucose or ALA could stimulate dark Chl synthesis in angiosperm, and that a combination of glucose and ALA exhibited an additional effect. It is still unknown and remains to be further explored what is the mechanism of the effect of glucose and ALA on the Chl synthesis of rice in the dark.
文摘Objective To investigate the efficacy and safety of photodynamic therapy （PDT） with topical 5-aminolaevulinic acid （ALA） on cervical condylomata acuminata. Methods Patients with cervical condylomata （n=30） were allocated into primary and recurrent group, and were given topical ALA under occlusive dressing for 3 hours followed by irradiation with semiconductor laser at a dose of 100 Jcm 2 and a power of 100 roW. The treatment was repeated 7 days later if the lesion was not completely removed after the first treatment. Complete response rate and recurrence rate of wart lesions as well as rate of adverse reaction were analyzed. Results The total complete response rate of PDT was 100% and the total recurrence rate was 5% after 3 months of follow-up. Recurrence rate of recurrent group was significantly lower than that of prior managements （100%, P〈0.01）. The side effects of PDT in patients mainly included mild burning and/or stinging restricted to the illuminated areas, and was significant lower than their own control （25% vs. 100%, P〈0.05）. Conclusion Compared with conventional therapies, topical application of ALA-PDT is a simple, effective, safe, well-tolerated, and low recurrence rate treatment for cervical condylomata acuminata.
文摘Tung oil-based polyols were synthesized by the esterification and transesterification between Tung oilbased anhydride and butanediol. The hydroxyl values of the polyols prepared were tested and discussed. Polyurethane was prepared by using Tung oil-based polyols and/or poly(propylene glycol) as polyols and by using isophorone diisocyanate as isocyanate. The effect of the ratio of Tung oil-based polyols to poly(propylene glycol) on the properties of polyurethane prepared was investigated by the water resistance, alcohol resistance and hardness tests. The results show that Tung oil-based polyols are effective to improve the hardness, water resistance and alcohol resistance of polyurethane.
文摘Objective To use δ-aminolevulinic acid induced photodynamic therapy (ALA-PDT) increasingly in treating skin cancers and other diseases in many countries and to explore the efficacy of ALA-PDT for skin cancers in China. Methods Eighty-eight patients, including 34 cases of basal cell carcinoma (BCC), 32 cases of squamous cell carcinoma (SCC), two cases of basal-squamous cell carcinoma (BSCC), one case of verrucuous carcinoma, nine cases of Bowen disease, two cases Paget disease of the nipple and eight cases of extramammary Paget disease, were treated by the δ-aminolevulinic acid induced photodynamic therapy first in China from 1997 to 2000. Results All BCC, including 11 cases of superficial lesions and 29 solid lesions, achieved complete reaction (CR) by 1-4 times of the ALA-PDT. Except one patient with adenoid SCC (grade Ⅲ), all SCC (grade Ⅰ and grade Ⅱ) patients achieved complete remission by 3-6 times of ALA-PDT. All Bowen diseases achieved complete reaction by 1-4 times. Although for Paget diseases it could not cure the disease simply by ALA-PDT, it could control the symptoms. The recurrence rates were 11% (4/34) for BCC, and 22% (7/32) for SCC by following up 1-3 years after the therapy. The continuous therapy is still effective. Conclusions ALA-PDT is an effective, non-traumatic treatment for patients with BCC, SCC, Bowen and Paget diseases. It is especially suitable for older and weaker patients or those who are not tolerable to other therapies. It also has a unique advantage for tumors in specific anatomical areas. It is a new alternative modality for skin cancer therapies.
