【目的】分析中川208四个器官(根、茎、叶、花)的细菌群落多样性与物种组成,为利用中川208内生细菌资源提供科学依据。【方法】以中川208的根、茎、叶、花为研究对象,采用高通量测序与生物信息学分析方法,解析中川208不同器官内生细菌...【目的】分析中川208四个器官(根、茎、叶、花)的细菌群落多样性与物种组成,为利用中川208内生细菌资源提供科学依据。【方法】以中川208的根、茎、叶、花为研究对象,采用高通量测序与生物信息学分析方法,解析中川208不同器官内生细菌的群落结构与物种组成,探讨植物养分特征对优势细菌菌群的调控作用。【结果】(1)从中川208四种样品中共获得5460条特征序列(amplicon sequence variants:ASVs),归属于19门、72纲、161目、285科和389属。(2)各样本的细菌群落多样性为根>茎≥花>叶。Beta多样性和聚类分析表明,中川208的根和叶内生细菌群落组成较相似,与花和茎有明显区别。(3)物种组成上,根、茎、叶内以变形菌门和放线菌门相对丰度最高,花中以厚壁菌门和拟杆菌门的相对丰度最高。LEfSe分析结果表明,中川208不同器官中的细菌群落构成在属水平上存在显著差异性,特别是细菌属不动杆菌、短波单胞菌、异根瘤菌、芽孢杆菌、金黄杆菌、肠杆菌、另枝菌、毛螺菌、普拉梭菌、瘤胃球菌和Rosenbergiella的相对丰度在茎、叶、花内差异显著。(4)冗余分析表明,烟株总N(R2=0.730, P <0.001)、总糖(R2=0.883, P <0.001)和Mg(R2=0.907, P <0.01)含量与各器官中的优势细菌群落分布密切相关。【结论】中川208内生细菌群落多样性自根依次向花、茎、叶呈递减趋势,且不同器官中的内生细菌群落在物种组成上具有明显差异性。中川208植物器官中存在多种显著富集的细菌菌群,值得进一步研究与开发利用。展开更多
Objective:To investigate the cardioprotective effect of naringenin against isoproterenol(ISO)-induced cardiotoxicity in rats.Methods:Rats were divided into five groups:the normal group,the ISO group(85 mg/kg b.w.);the...Objective:To investigate the cardioprotective effect of naringenin against isoproterenol(ISO)-induced cardiotoxicity in rats.Methods:Rats were divided into five groups:the normal group,the ISO group(85 mg/kg b.w.);the ISO+naringenin(50 mg/kg b.w.)group,the ISO+naringenin(100 mg/kg b.w.)group and the ISO+propranolol(10 mg/kg b.w.)group.Plasma creatine kinase-MB(CK-MB),cardiac troponin T,lactate dehydrogenase,brain natriuretic peptide(BNP),and IL-10,as well as cardiac transforming growth factor-β1(TGF-β1),vascular endothelial growth factor(VEGF)and malondialdehyde(MDA)were examined.In addition,NLRP3 and mRNA-208a expressions were evaluated by RT-PCR analysis.Histopathological examination was also performed to assess cardiac damages.Results:Naringenin treatment significantly decreased plasma lactate dehydrogenase,CK-MB,cardiac troponin T,BNP,and IL-10,as well as cardiac TGF-β1,VEGF,and MDA while increasing p-Akt and superoxide dismutase in ISO-administered rats.It also reduced NLRP3 and mRNA-208a gene expression levels.Furthermore,naringenin improved ISO-induced cardiac damage.Conclusions:Naringenin attenuates myocardial dysfunction in ISO-treated rats by decreasing oxidative stress and increasing cardiac endogenous antioxidant system,which may be modulated partly by improvement of NLRP3 and mRNA-208a gene expression.展开更多
BACKGROUND The incidence and prevalence of atrial fibrillation are increasing each year,and this condition is one of the most common clinical arrhythmias.AIM To investigate the levels and significance of serum fibrobl...BACKGROUND The incidence and prevalence of atrial fibrillation are increasing each year,and this condition is one of the most common clinical arrhythmias.AIM To investigate the levels and significance of serum fibroblast growth factor 23(FGF-23)and miR-208 b in patients with atrial fibrillation and their relationship with prognosis.METHODS From May 2018 to October 2019,240 patients with atrial fibrillation were selected as an observation group,including 134 with paroxysmal atrial fibrillation and 106 with persistent atrial fibrillation;150 patients with healthy sinus rhythm were selected as a control group.The serum levels of FGF-23 and miR-208 b in the two groups were measured.In the observation group,cardiac parameters were determined by echocardiography.RESULTS The serum levels of FGF-23 and miR-208 b in the observation group were 210.20±89.60 ng/mL and 5.30±1.22 ng/mL,which were significantly higher than the corresponding values in the control group(P<0.05).In the observation group,the serum levels of FGF-23 and miR-208 b in patients with persistent atrial fibrillation were 234.22±70.05 ng/mL and 5.83±1.00 ng/mL,which were significantly higher than the corresponding values in patients with paroxysmal atrial fibrillation(P<0.05).The left atrial dimension(LAD)of patients with persistent atrial fibrillation was 38.81±5.11 mm,which was significantly higher than that of patients with paroxysmal atrial fibrillation(P>0.05).The serum levels of FGF-23and miR-208 b were positively correlated with the LAD(r=0.411 and 0.382,P<0.05).In the observation group,the serum levels of FGF-23 and miR-208 b in patients with a major cardiovascular event(MACE)were 243.30±72.29 ng/mL and 6.12±1.12 ng/mL,which were significantly higher than the corresponding values in patients without a MACE(P<0.05).CONCLUSION The serum levels of FGF-23 and miR-208 b are increased in patients with atrial fibrillation and are related to the type of disease,cardiac parameters,and prognosis.展开更多
文摘【目的】分析中川208四个器官(根、茎、叶、花)的细菌群落多样性与物种组成,为利用中川208内生细菌资源提供科学依据。【方法】以中川208的根、茎、叶、花为研究对象,采用高通量测序与生物信息学分析方法,解析中川208不同器官内生细菌的群落结构与物种组成,探讨植物养分特征对优势细菌菌群的调控作用。【结果】(1)从中川208四种样品中共获得5460条特征序列(amplicon sequence variants:ASVs),归属于19门、72纲、161目、285科和389属。(2)各样本的细菌群落多样性为根>茎≥花>叶。Beta多样性和聚类分析表明,中川208的根和叶内生细菌群落组成较相似,与花和茎有明显区别。(3)物种组成上,根、茎、叶内以变形菌门和放线菌门相对丰度最高,花中以厚壁菌门和拟杆菌门的相对丰度最高。LEfSe分析结果表明,中川208不同器官中的细菌群落构成在属水平上存在显著差异性,特别是细菌属不动杆菌、短波单胞菌、异根瘤菌、芽孢杆菌、金黄杆菌、肠杆菌、另枝菌、毛螺菌、普拉梭菌、瘤胃球菌和Rosenbergiella的相对丰度在茎、叶、花内差异显著。(4)冗余分析表明,烟株总N(R2=0.730, P <0.001)、总糖(R2=0.883, P <0.001)和Mg(R2=0.907, P <0.01)含量与各器官中的优势细菌群落分布密切相关。【结论】中川208内生细菌群落多样性自根依次向花、茎、叶呈递减趋势,且不同器官中的内生细菌群落在物种组成上具有明显差异性。中川208植物器官中存在多种显著富集的细菌菌群,值得进一步研究与开发利用。
文摘Objective:To investigate the cardioprotective effect of naringenin against isoproterenol(ISO)-induced cardiotoxicity in rats.Methods:Rats were divided into five groups:the normal group,the ISO group(85 mg/kg b.w.);the ISO+naringenin(50 mg/kg b.w.)group,the ISO+naringenin(100 mg/kg b.w.)group and the ISO+propranolol(10 mg/kg b.w.)group.Plasma creatine kinase-MB(CK-MB),cardiac troponin T,lactate dehydrogenase,brain natriuretic peptide(BNP),and IL-10,as well as cardiac transforming growth factor-β1(TGF-β1),vascular endothelial growth factor(VEGF)and malondialdehyde(MDA)were examined.In addition,NLRP3 and mRNA-208a expressions were evaluated by RT-PCR analysis.Histopathological examination was also performed to assess cardiac damages.Results:Naringenin treatment significantly decreased plasma lactate dehydrogenase,CK-MB,cardiac troponin T,BNP,and IL-10,as well as cardiac TGF-β1,VEGF,and MDA while increasing p-Akt and superoxide dismutase in ISO-administered rats.It also reduced NLRP3 and mRNA-208a gene expression levels.Furthermore,naringenin improved ISO-induced cardiac damage.Conclusions:Naringenin attenuates myocardial dysfunction in ISO-treated rats by decreasing oxidative stress and increasing cardiac endogenous antioxidant system,which may be modulated partly by improvement of NLRP3 and mRNA-208a gene expression.
文摘BACKGROUND The incidence and prevalence of atrial fibrillation are increasing each year,and this condition is one of the most common clinical arrhythmias.AIM To investigate the levels and significance of serum fibroblast growth factor 23(FGF-23)and miR-208 b in patients with atrial fibrillation and their relationship with prognosis.METHODS From May 2018 to October 2019,240 patients with atrial fibrillation were selected as an observation group,including 134 with paroxysmal atrial fibrillation and 106 with persistent atrial fibrillation;150 patients with healthy sinus rhythm were selected as a control group.The serum levels of FGF-23 and miR-208 b in the two groups were measured.In the observation group,cardiac parameters were determined by echocardiography.RESULTS The serum levels of FGF-23 and miR-208 b in the observation group were 210.20±89.60 ng/mL and 5.30±1.22 ng/mL,which were significantly higher than the corresponding values in the control group(P<0.05).In the observation group,the serum levels of FGF-23 and miR-208 b in patients with persistent atrial fibrillation were 234.22±70.05 ng/mL and 5.83±1.00 ng/mL,which were significantly higher than the corresponding values in patients with paroxysmal atrial fibrillation(P<0.05).The left atrial dimension(LAD)of patients with persistent atrial fibrillation was 38.81±5.11 mm,which was significantly higher than that of patients with paroxysmal atrial fibrillation(P>0.05).The serum levels of FGF-23and miR-208 b were positively correlated with the LAD(r=0.411 and 0.382,P<0.05).In the observation group,the serum levels of FGF-23 and miR-208 b in patients with a major cardiovascular event(MACE)were 243.30±72.29 ng/mL and 6.12±1.12 ng/mL,which were significantly higher than the corresponding values in patients without a MACE(P<0.05).CONCLUSION The serum levels of FGF-23 and miR-208 b are increased in patients with atrial fibrillation and are related to the type of disease,cardiac parameters,and prognosis.
