采用顶空固相微萃取-气相色谱-质谱联用(HS-SPME-GC-MS)技术、16 S rRNA和内在转录间隔区(ITS)高通量测序技术,探究了安化红茶的深发酵和浅发酵工艺过程中红茶的香气特征成分和微生物多样性。结果表明,在不同发酵工艺的安化红茶中共检测...采用顶空固相微萃取-气相色谱-质谱联用(HS-SPME-GC-MS)技术、16 S rRNA和内在转录间隔区(ITS)高通量测序技术,探究了安化红茶的深发酵和浅发酵工艺过程中红茶的香气特征成分和微生物多样性。结果表明,在不同发酵工艺的安化红茶中共检测出82种挥发性成分,主要为醇类、酯类和醛类,占比约为85%;挥发性成分总量随着加工过程的进行呈现先增加后降低的趋势。以气味活度值(OAV)>1且变量投影重要性(VIP)>1为依据,在浅发酵与深发酵工艺的安化红茶中筛选出柠檬醛、芳樟醇、苯乙醇、苯乙醛、水杨酸甲酯、β-月桂烯等14种关键差异挥发性成分。安化红茶的优势细菌为鞘氨醇单胞菌属(Sphingomonas)、甲基杆菌属(Methylobacterium)、橙黄单胞菌属(Aureimonas),优势真菌为枝孢属(Cladosporium)、链格孢属(Alternaria)、Setophoma。橙黄单胞菌属、肠杆菌属(Enterobacter)、曲霉属(Aspergillus)、Pseudopithomyces与不同发酵过程显著相关。研究结果为安化红茶科学加工、风味解析提供理论参考与依据。展开更多
Pneumoconiosis refers to a group of interstitial lung diseases that arise from the prolonged inhalation of occupational dust,resulting in chronic inflammation,immune dysregulation,and lung fibrosis[1].According to the...Pneumoconiosis refers to a group of interstitial lung diseases that arise from the prolonged inhalation of occupational dust,resulting in chronic inflammation,immune dysregulation,and lung fibrosis[1].According to the 2019 Burden of Disease database,there are currently 3.1 million cases of pneumoconiosis worldwide,with developing countries such as China experiencing a particularly significant burden.The complex pathogenesis of pneumoconiosis,along with the irreversible nature of pulmonary fibrosis,has led to a scarcity of effective therapeutic options.While the aetiology of pneumoconiosis is well established,additional factors,including diet,genetic susceptibility,and lifestyle habits,may influence an individual’s risk of developing the disease or its progression.Notably,moderate intake of polyunsaturated fatty acids(PUFAs)has been associated with a reduced risk of chronic respiratory diseases and the modulation of lung inflammation through the regulation of antioxidant signaling pathways[2].However,the potential impact of PUFAs on pneumoconiosis remains an area requiring further investigation.展开更多
目的探讨不孕症患者行宫腔镜子宫内膜息肉电切术(transcervical resection of polyp,TCRP)后妊娠结局的影响因素。方法回顾分析2021年3月至2022年3月442例TCRP术的不孕症合并子宫内膜息肉(endometrial polyp,EP)患者资料,术后随访12~24...目的探讨不孕症患者行宫腔镜子宫内膜息肉电切术(transcervical resection of polyp,TCRP)后妊娠结局的影响因素。方法回顾分析2021年3月至2022年3月442例TCRP术的不孕症合并子宫内膜息肉(endometrial polyp,EP)患者资料,术后随访12~24个月,分为术后妊娠组(妊娠组)及未妊娠组(对照组)。比较年龄、体质量指数(body mass index,BMI)、不孕类型、异常子宫出血、不良孕史、EP数量、EP大小、术中负压吸宫术、子宫内膜炎、TCRP术手术时间、宫腔深度,对不孕症患者TCRP术后妊娠结局的影响因素进行多因素分析。结果442例不孕症合并EP患者中,妊娠组274例(62.0%),对照组168例(38.0%);影响不孕症行TCRP术后妊娠的因素有年龄(OR=0.925,95%CI:0.881~0.972,P<0.05)、术前异常子宫出血(OR=0.646,95%CI:0.432~0.967,P<0.05)及原发不孕(OR=2.105,95%CI:1.295~3.423,P<0.05)。结论TCRP术后可以改善不孕症合并EP的妊娠结局,年龄和术前异常子宫出血是不孕症患者TCRP术后提高妊娠的保护因素;原发不孕是不孕症患者TCRP术后妊娠的危险因素。展开更多
文摘采用顶空固相微萃取-气相色谱-质谱联用(HS-SPME-GC-MS)技术、16 S rRNA和内在转录间隔区(ITS)高通量测序技术,探究了安化红茶的深发酵和浅发酵工艺过程中红茶的香气特征成分和微生物多样性。结果表明,在不同发酵工艺的安化红茶中共检测出82种挥发性成分,主要为醇类、酯类和醛类,占比约为85%;挥发性成分总量随着加工过程的进行呈现先增加后降低的趋势。以气味活度值(OAV)>1且变量投影重要性(VIP)>1为依据,在浅发酵与深发酵工艺的安化红茶中筛选出柠檬醛、芳樟醇、苯乙醇、苯乙醛、水杨酸甲酯、β-月桂烯等14种关键差异挥发性成分。安化红茶的优势细菌为鞘氨醇单胞菌属(Sphingomonas)、甲基杆菌属(Methylobacterium)、橙黄单胞菌属(Aureimonas),优势真菌为枝孢属(Cladosporium)、链格孢属(Alternaria)、Setophoma。橙黄单胞菌属、肠杆菌属(Enterobacter)、曲霉属(Aspergillus)、Pseudopithomyces与不同发酵过程显著相关。研究结果为安化红茶科学加工、风味解析提供理论参考与依据。
基金the Central Guidance for Regional Science and Technology Development Projects(YDZJSX2024B010)Research project of Shanxi Provincial Health Commission(2023XG019).
文摘Pneumoconiosis refers to a group of interstitial lung diseases that arise from the prolonged inhalation of occupational dust,resulting in chronic inflammation,immune dysregulation,and lung fibrosis[1].According to the 2019 Burden of Disease database,there are currently 3.1 million cases of pneumoconiosis worldwide,with developing countries such as China experiencing a particularly significant burden.The complex pathogenesis of pneumoconiosis,along with the irreversible nature of pulmonary fibrosis,has led to a scarcity of effective therapeutic options.While the aetiology of pneumoconiosis is well established,additional factors,including diet,genetic susceptibility,and lifestyle habits,may influence an individual’s risk of developing the disease or its progression.Notably,moderate intake of polyunsaturated fatty acids(PUFAs)has been associated with a reduced risk of chronic respiratory diseases and the modulation of lung inflammation through the regulation of antioxidant signaling pathways[2].However,the potential impact of PUFAs on pneumoconiosis remains an area requiring further investigation.
文摘目的探讨不孕症患者行宫腔镜子宫内膜息肉电切术(transcervical resection of polyp,TCRP)后妊娠结局的影响因素。方法回顾分析2021年3月至2022年3月442例TCRP术的不孕症合并子宫内膜息肉(endometrial polyp,EP)患者资料,术后随访12~24个月,分为术后妊娠组(妊娠组)及未妊娠组(对照组)。比较年龄、体质量指数(body mass index,BMI)、不孕类型、异常子宫出血、不良孕史、EP数量、EP大小、术中负压吸宫术、子宫内膜炎、TCRP术手术时间、宫腔深度,对不孕症患者TCRP术后妊娠结局的影响因素进行多因素分析。结果442例不孕症合并EP患者中,妊娠组274例(62.0%),对照组168例(38.0%);影响不孕症行TCRP术后妊娠的因素有年龄(OR=0.925,95%CI:0.881~0.972,P<0.05)、术前异常子宫出血(OR=0.646,95%CI:0.432~0.967,P<0.05)及原发不孕(OR=2.105,95%CI:1.295~3.423,P<0.05)。结论TCRP术后可以改善不孕症合并EP的妊娠结局,年龄和术前异常子宫出血是不孕症患者TCRP术后提高妊娠的保护因素;原发不孕是不孕症患者TCRP术后妊娠的危险因素。
