A new method CTAB-silica for DNA extraction and purification from the leaves and buds of Castanea mollissima and Ginkgo biloba was tested. The method is based on the silica-based purification protocol developed by Bo...A new method CTAB-silica for DNA extraction and purification from the leaves and buds of Castanea mollissima and Ginkgo biloba was tested. The method is based on the silica-based purification protocol developed by Boom et al. (1990). By modifying the protocol, plant genome DNA could be extracted easily from dormant buds, mature leaves, and other parts of plant. Our results showed that the purified DNA was of high purity and could be analyzed by PCR. Furthermore, this CTAB-silica method took much less time for a successful DNA purification process compared to the traditional methods (CTAB and SDS). By our method, the suitable DNA can be extracted and purified from over 10 plant samples by one person in an hour.展开更多
目的:探讨多元复合声治疗联合口服银杏叶提取物在治疗慢性主观性耳鸣患者中的效果与安全性。方法:选取我院2021年2月至2024年2月收治的60例慢性主观性耳鸣患者作为研究对象,采用随机数字表法分为单一组和联合组,各30例。单一组患者接受...目的:探讨多元复合声治疗联合口服银杏叶提取物在治疗慢性主观性耳鸣患者中的效果与安全性。方法:选取我院2021年2月至2024年2月收治的60例慢性主观性耳鸣患者作为研究对象,采用随机数字表法分为单一组和联合组,各30例。单一组患者接受多元复合声治疗,联合组在单一组的基础上增加口服银杏叶提取物治疗。分别评估两组患者的临床疗效、听力损失程度、耳鸣改善情况[耳鸣严重程度分级量表(Tinnitus Handicap Inventory,THI)]、生活质量[健康状况调查量表(36-Item Short Form Health Survey,SF-36)]、睡眠质量[匹兹堡睡眠质量指数(Pittsburgh Sleep Quality Index,PSQI)]和心理状态[贝克焦虑量表(Beck Anxiety Inventory,BAI)]。结果:联用组的临床总有效率明显高于单一组(P<0.05);治疗后,两组患者的听力损失程度和THI评分、PSQI、BAI评分均明显降低,且联用组明显低于单一组(P<0.05);两组患者的SF-36评分均明显升高,且联用组明显高于单一组(P<0.05)。结论:多元复合声治疗联合口服银杏叶提取物治疗慢性主观性耳鸣患者临床疗效好,可以有效降低听力损伤程度,改善患者的耳鸣症状,提高其生活质量和睡眠质量,促进心理健康。展开更多
建立了全二维液相色谱串联质谱分离分析模式,将质脂体色谱柱和ODS反相色谱柱作为二维分析色谱柱,二者通过一个连有两个0 5mL定量环的八通阀耦联。质脂体色谱柱上的馏分在反相色谱柱上分离后,直接进入紫外 检测器,然后经分流器分流后进...建立了全二维液相色谱串联质谱分离分析模式,将质脂体色谱柱和ODS反相色谱柱作为二维分析色谱柱,二者通过一个连有两个0 5mL定量环的八通阀耦联。质脂体色谱柱上的馏分在反相色谱柱上分离后,直接进入紫外 检测器,然后经分流器分流后进入大气压电离质谱。将该体系用于银杏叶提取物的组成研究,共检测到至少41个组分,结合紫外 可见光谱和质谱信息,其中13个组分初步鉴定为银杏内酯B、银杏内酯C、白果内酯、槲皮素芸香糖苷、槲皮素、槲皮素 3 O β D 葡萄糖基(1 2) α L 鼠李糖苷、槲皮素 3 O β D 葡萄糖苷、异鼠李素、山柰酚 3 O β D 芸香糖基(1 2) α L 鼠李糖苷、异鼠李素 3 O β D 芸香糖苷、山柰酚 3 O β D 葡萄糖苷、山柰酚和山柰酚 3 O β D 芸香糖苷。展开更多
文摘A new method CTAB-silica for DNA extraction and purification from the leaves and buds of Castanea mollissima and Ginkgo biloba was tested. The method is based on the silica-based purification protocol developed by Boom et al. (1990). By modifying the protocol, plant genome DNA could be extracted easily from dormant buds, mature leaves, and other parts of plant. Our results showed that the purified DNA was of high purity and could be analyzed by PCR. Furthermore, this CTAB-silica method took much less time for a successful DNA purification process compared to the traditional methods (CTAB and SDS). By our method, the suitable DNA can be extracted and purified from over 10 plant samples by one person in an hour.
文摘目的:探讨多元复合声治疗联合口服银杏叶提取物在治疗慢性主观性耳鸣患者中的效果与安全性。方法:选取我院2021年2月至2024年2月收治的60例慢性主观性耳鸣患者作为研究对象,采用随机数字表法分为单一组和联合组,各30例。单一组患者接受多元复合声治疗,联合组在单一组的基础上增加口服银杏叶提取物治疗。分别评估两组患者的临床疗效、听力损失程度、耳鸣改善情况[耳鸣严重程度分级量表(Tinnitus Handicap Inventory,THI)]、生活质量[健康状况调查量表(36-Item Short Form Health Survey,SF-36)]、睡眠质量[匹兹堡睡眠质量指数(Pittsburgh Sleep Quality Index,PSQI)]和心理状态[贝克焦虑量表(Beck Anxiety Inventory,BAI)]。结果:联用组的临床总有效率明显高于单一组(P<0.05);治疗后,两组患者的听力损失程度和THI评分、PSQI、BAI评分均明显降低,且联用组明显低于单一组(P<0.05);两组患者的SF-36评分均明显升高,且联用组明显高于单一组(P<0.05)。结论:多元复合声治疗联合口服银杏叶提取物治疗慢性主观性耳鸣患者临床疗效好,可以有效降低听力损伤程度,改善患者的耳鸣症状,提高其生活质量和睡眠质量,促进心理健康。
文摘建立了全二维液相色谱串联质谱分离分析模式,将质脂体色谱柱和ODS反相色谱柱作为二维分析色谱柱,二者通过一个连有两个0 5mL定量环的八通阀耦联。质脂体色谱柱上的馏分在反相色谱柱上分离后,直接进入紫外 检测器,然后经分流器分流后进入大气压电离质谱。将该体系用于银杏叶提取物的组成研究,共检测到至少41个组分,结合紫外 可见光谱和质谱信息,其中13个组分初步鉴定为银杏内酯B、银杏内酯C、白果内酯、槲皮素芸香糖苷、槲皮素、槲皮素 3 O β D 葡萄糖基(1 2) α L 鼠李糖苷、槲皮素 3 O β D 葡萄糖苷、异鼠李素、山柰酚 3 O β D 芸香糖基(1 2) α L 鼠李糖苷、异鼠李素 3 O β D 芸香糖苷、山柰酚 3 O β D 葡萄糖苷、山柰酚和山柰酚 3 O β D 芸香糖苷。
