功能性消化不良患者口腔內(nèi)唾液菌群變化的意義研究
發(fā)布時間:2018-10-22 15:53
【摘要】:目的分析和對比功能性消化不良(functional dyspepsia,FD)患者與健康對照者(healthy control,HC)唾液中菌群的差異,探討FD不同亞型和焦慮狀態(tài)對唾液菌群組成的影響,篩選出與疾病狀態(tài)相關(guān)的特征性菌群。方法收集68例FD患者及47例HC的唾液標(biāo)本,每個入組者均填寫GAD-7(generalized anxiety disorder-7,GAD-7)焦慮量表,并計算得分。依據(jù)羅馬Ⅲ標(biāo)準(zhǔn)和GAD-7量表分值,從中選出40例FD患者,包括餐后不適綜合征(postprandial distress syndrome,PDS)和上腹痛綜合征(epigastric pain syndrome,EPS)各 20 例。伴焦慮狀態(tài)(anxiety-positive functional dyspepsia,FD.P)和不伴焦慮狀態(tài)(anxiety-negative functional dyspepsia,FD.N)各20例。HC組20例。提取唾液中的總基因組DNA,采用Illumina高通量測序技術(shù)對樣本中所有細(xì)菌的16S rRNA-V4區(qū)進(jìn)行DNA測序,并進(jìn)行包括操作分類單位(operational taxonomic units,OTUs)、Alpha 多樣性、Beta 多樣性等生物信息學(xué)分析,并獲得各組之間的差異性細(xì)菌。所有入組者均無幽門螺桿菌(helicobacter pylori,Hp)感染。結(jié)果FD組唾液中菌群在門水平以變形菌門、擬桿菌門為主,屬水平以奈瑟菌屬、梭桿菌屬為主。EPS組和PDS組、FD.P組和FD.N組菌群結(jié)構(gòu)在門及屬水平與FD組相似,即以變形菌門、擬桿菌門、奈瑟菌屬、梭桿菌屬為主。從Chaol、ACE、Shannon等alpha指數(shù)及稀釋曲線等分析,提示各分組的豐度及多樣性較合理。但FD組、EPS組、PDS組唾液菌群的Alpha指數(shù)與HC組相比沒有明顯差異。FD.P組菌群豐度較FD.N組和HC組明顯減少,多樣性則沒有明顯差異。采用LEfSe(linear discriminant analysis effect size tool,LEfSe)分析篩選組間有顯著差異的菌群。FD與HC組之間有差異菌群共有13個,包括擬桿菌門、普式菌屬、韋榮氏球菌屬、γ變形菌、變形菌門、巴氏桿菌科等,其中5種在FD組富集。PDS組和EPS組兩組間特異性的菌群有γ變形菌、巴氏桿菌科、巴氏桿菌目,但僅在PDS組富集。PDS組和HC兩組間特異性的菌群有8種,包括變形菌、巴氏桿菌科、擬桿菌門等,其中5種在PDS組富集。EPS和HC兩組間特異性的菌群有7種,包括韋榮氏球菌屬、韋榮氏球菌科、普氏菌屬等,僅在HC組富集。FD.N組與HC組有差異的菌群有12種,包括擬桿菌門、普氏菌屬、韋榮氏球菌科、巴氏桿菌科、β變形菌、變形菌門等,FD.N的優(yōu)勢菌群有5種。FD.P組與HC之間有差異的菌群共有4個,包括鏈球菌科和鏈球菌屬等。FD.P組與FD.N組之間未發(fā)現(xiàn)有差異性的菌群。結(jié)論與HC相比,FD患者唾液菌群以變形菌門,HC以擬桿菌門為主。FD不同亞型發(fā)現(xiàn)有其特征性菌群,PDS特征性的細(xì)菌包括變形菌門、γ變形菌、巴士桿菌科等,EPS未發(fā)現(xiàn)有特征性菌群。FD患者伴或不伴焦慮狀態(tài)也發(fā)現(xiàn)有特征性菌群,FD.P組唾液中特征性的細(xì)菌為鏈球菌科和鏈球菌屬,FD.N組唾液中特征性的細(xì)菌為變形菌門、Y變形菌、β變形菌、巴氏桿菌科、巴士桿菌目,研究初步提示了菌群組成與FD癥狀和情緒狀態(tài)有聯(lián)系。
[Abstract]:Objective to analyze and compare the differences of salivary flora between patients with functional dyspepsia (functional dyspepsia,FD) and healthy controls (healthy control,HC), to explore the effects of different FD subtypes and anxiety states on the composition of salivary flora, and to screen out the characteristic flora associated with disease state. Methods the saliva specimens of 68 patients with FD and 47 patients with HC were collected. Each participant filled in GAD-7 (generalized anxiety disorder-7,GAD-7) anxiety scale and calculated the score. According to Rome 鈪,
本文編號:2287609
[Abstract]:Objective to analyze and compare the differences of salivary flora between patients with functional dyspepsia (functional dyspepsia,FD) and healthy controls (healthy control,HC), to explore the effects of different FD subtypes and anxiety states on the composition of salivary flora, and to screen out the characteristic flora associated with disease state. Methods the saliva specimens of 68 patients with FD and 47 patients with HC were collected. Each participant filled in GAD-7 (generalized anxiety disorder-7,GAD-7) anxiety scale and calculated the score. According to Rome 鈪,
本文編號:2287609
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