目的:探讨iRoot BP Plus应用于年轻恒牙血运重建术对牙根发育及龈沟液血管内皮生长因子(VEGF)、碱性成纤维细胞生长因子(bFGF)、白细胞介素-8(IL-8)、白细胞介素-1β(IL-1β)水平的影响。方法:选取88例年轻恒牙血运重建术患儿作为研究对...目的:探讨iRoot BP Plus应用于年轻恒牙血运重建术对牙根发育及龈沟液血管内皮生长因子(VEGF)、碱性成纤维细胞生长因子(bFGF)、白细胞介素-8(IL-8)、白细胞介素-1β(IL-1β)水平的影响。方法:选取88例年轻恒牙血运重建术患儿作为研究对象,按照随机数字表法将其分为对照组(44例,44颗牙)和试验组(44例,44颗牙)。对照组使用无机三氧化物聚合物(MTA)作为填充材料,试验组选择iRoot BP Plus作为填充材料,两组术后均随访1年。比较两组随访1年后的疗效、牙根发育情况,术前、随访1年后的牙根长度、根管壁厚度、咬合功能、咀嚼功能、疼痛程度、牙周指数,术前、术后1周的龈沟液VEGF、bFGF、IL-8、IL-1β水平及随访期间的不良反应发生情况。结果:随访1年后,试验组总有效率及牙根发育Ⅰ型患儿占比分别为95.45%、47.73%,高于对照组的79.55%、25.00%(均P<0.05)。与术前比较,随访1年后,两组牙根长度、根管壁厚度增加,试验组高于对照组(均P<0.05);两组咬合功能、咀嚼功能、视觉模拟评分法(VAS)、牙周袋深度(PD)、牙龈指数(GI)、龈沟出血指数(SBI)、菌斑指数(PLI)评分降低,试验组低于对照组(均P<0.05)。与术前比较,术后1周,两组龈沟液VEGF、bFGF水平升高,试验组高于对照组(均P<0.05);两组龈沟液IL-8、IL-1β水平降低,试验组低于对照组(均P<0.05)。随访期间,试验组不良反应总发生率为4.55%,低于对照组的22.73%(P<0.05)。结论:与MTA比较,iRoot BP Plus应用于年轻恒牙血运重建术中可调节患儿龈沟液VEGF、bFGF、IL-8、IL-1β水平,减轻炎症,促进牙根生长发育,并可减轻患儿疼痛程度,改善咬合功能、咀嚼功能及牙周状况,进而有利于提高疗效,且具有较好的安全性。展开更多
An endophytic fungus producing 1,8-cineole from Neolitsea pulchella (Meissn.) Merr. was identified as Annulohypoxylon sp. by phylogenetic analyses of the sequence alignments of ITS rDNA, β-tubulin, Actin and EF1-α. ...An endophytic fungus producing 1,8-cineole from Neolitsea pulchella (Meissn.) Merr. was identified as Annulohypoxylon sp. by phylogenetic analyses of the sequence alignments of ITS rDNA, β-tubulin, Actin and EF1-α. This isolate produces an attractive spectrum of volatile organic compounds (VOCs) with only one dominant component, 1,8-cineole, as identified by gas chromatography-mass spectrometry (GC-MS). The fungus was able to grow in seven media with different carbon sources, and five raw agro-forest residues. The content of 1,8-cineole in the mixed VOCs via fungus reached up to 94.95% and 91.25% relative area in PDA and raw poplar sawdust, respectively. Under optimum test conditions, the fungus produced 1,8-cineole at the 0.764 ppmv in 50 mL head spaces in PDA. Interestingly, 1,8-cineole is an ideal fuel additive for both diesel and gasoline engines. Also, this is the first isolate, in this group of fungi, making cineole, which produces as its primary VOC product which makes it an ideal organism for strain improvement. Such as step will be critical for its ultimate use in biofuel production.展开更多
文摘目的:探讨iRoot BP Plus应用于年轻恒牙血运重建术对牙根发育及龈沟液血管内皮生长因子(VEGF)、碱性成纤维细胞生长因子(bFGF)、白细胞介素-8(IL-8)、白细胞介素-1β(IL-1β)水平的影响。方法:选取88例年轻恒牙血运重建术患儿作为研究对象,按照随机数字表法将其分为对照组(44例,44颗牙)和试验组(44例,44颗牙)。对照组使用无机三氧化物聚合物(MTA)作为填充材料,试验组选择iRoot BP Plus作为填充材料,两组术后均随访1年。比较两组随访1年后的疗效、牙根发育情况,术前、随访1年后的牙根长度、根管壁厚度、咬合功能、咀嚼功能、疼痛程度、牙周指数,术前、术后1周的龈沟液VEGF、bFGF、IL-8、IL-1β水平及随访期间的不良反应发生情况。结果:随访1年后,试验组总有效率及牙根发育Ⅰ型患儿占比分别为95.45%、47.73%,高于对照组的79.55%、25.00%(均P<0.05)。与术前比较,随访1年后,两组牙根长度、根管壁厚度增加,试验组高于对照组(均P<0.05);两组咬合功能、咀嚼功能、视觉模拟评分法(VAS)、牙周袋深度(PD)、牙龈指数(GI)、龈沟出血指数(SBI)、菌斑指数(PLI)评分降低,试验组低于对照组(均P<0.05)。与术前比较,术后1周,两组龈沟液VEGF、bFGF水平升高,试验组高于对照组(均P<0.05);两组龈沟液IL-8、IL-1β水平降低,试验组低于对照组(均P<0.05)。随访期间,试验组不良反应总发生率为4.55%,低于对照组的22.73%(P<0.05)。结论:与MTA比较,iRoot BP Plus应用于年轻恒牙血运重建术中可调节患儿龈沟液VEGF、bFGF、IL-8、IL-1β水平,减轻炎症,促进牙根生长发育,并可减轻患儿疼痛程度,改善咬合功能、咀嚼功能及牙周状况,进而有利于提高疗效,且具有较好的安全性。
文摘An endophytic fungus producing 1,8-cineole from Neolitsea pulchella (Meissn.) Merr. was identified as Annulohypoxylon sp. by phylogenetic analyses of the sequence alignments of ITS rDNA, β-tubulin, Actin and EF1-α. This isolate produces an attractive spectrum of volatile organic compounds (VOCs) with only one dominant component, 1,8-cineole, as identified by gas chromatography-mass spectrometry (GC-MS). The fungus was able to grow in seven media with different carbon sources, and five raw agro-forest residues. The content of 1,8-cineole in the mixed VOCs via fungus reached up to 94.95% and 91.25% relative area in PDA and raw poplar sawdust, respectively. Under optimum test conditions, the fungus produced 1,8-cineole at the 0.764 ppmv in 50 mL head spaces in PDA. Interestingly, 1,8-cineole is an ideal fuel additive for both diesel and gasoline engines. Also, this is the first isolate, in this group of fungi, making cineole, which produces as its primary VOC product which makes it an ideal organism for strain improvement. Such as step will be critical for its ultimate use in biofuel production.
