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Enhancing the Positive Predictive Value of EGD for Diagnosis of Barrett's Esophagus Through EsoGuard® Triage 通过 EsoGuard® 分诊提高胃肠造影诊断巴雷特食管的阳性预测值
Pub Date : 2024-07-27 DOI: 10.1101/2024.07.26.24311013
Jayde E Kurland, Sheena B Patel, Richard Englehardt, Seper Dezfoli, Daniel M Tseng, Michael W Foutz, Paul S Bradley, Badi Eghterafi, Victoria T Lee, Suman Verma, Brian J deGuzman, Lishan Aklog
Background: Guidelines support Barrett's esophagus (BE) screening, but most eligible patients do not undergo endoscopic evaluation; non-endoscopic strategies are now supported as a reasonable alternative by U.S gastroenterology societies. EsoGuard (EG) is a DNA assay used with EsoCheck, a non-endoscopic cell collection device for detection of BE, which can be utilized as a triage to esophagogastroduodenoscopy (EGD) in patients meeting screening criteria. In doing so, EG may serve to enrich the population undergoing EGD, resulting in more BE diagnoses while potentially reducing utilization of already-limited endoscopy resources.Aim: To test the hypothesis that BE detection in EGDs performed on EG positive patients will be significantly higher than the positive predictive value (PPV) of screening EGD alone. Methods: Real-world data was retrospectively collected from EG positive patients for whom EGD diagnoses were available. Baseline patient characteristics, risk factors, and EGD results were obtained from the treating physicians. PPV of screening EGDs was the comparator and estimated by literature-established disease prevalence of BE, which in the U.S gastroesophageal reflux disease population is ~10.6%. The hypothesis was tested using t-tests for single proportions at a one-sided 5% significance level. Results: Data from 209 patients found 60 (28.7%) subjects with salmon-colored mucosa on EGD and specialized intestinal metaplasia on histopathology. However, 10 (4.8%) had < 1cm of disease on visual inspection, therefore, did not meet the American College of Gastroenterology definition of BE so was excluded from the analysis. Of the remaining 199 patients, 50 (25.1%) had BE on EGD. In the cohort of patients meeting ACG screening criteria, 28.9% (33/114) had BE. Overall, a 2.4-fold increase in BE detection was observed compared to the PPV of screening EGD, and in the ACG cohort this increase was 2.7-fold. Among ACG patients ≥65 years old, the increase was nearly 2.5-fold (25.9% detection rate).Conclusions: Our data suggests EG and EC used as a triage test enriches the population undergoing EGD for BE, and compared to screening EGD alone, can help direct more efficient use of endoscopy resources to unburden the system without reducing the number of eligible patients screened and diagnosed.
背景:指南支持巴雷特食管(BE)筛查,但大多数符合条件的患者并不接受内镜评估;美国胃肠病学会现在支持将非内镜策略作为一种合理的替代方法。EsoGuard(EG)是一种 DNA 检测方法,与 EsoCheck(一种用于检测 BE 的非内镜细胞收集装置)一起使用,可作为符合筛查标准的患者进行食管胃十二指肠镜检查(EGD)的分流方法。这样,EG 可以丰富接受 EGD 检查的人群,从而获得更多的 BE 诊断结果,同时有可能降低本已有限的内镜检查资源的利用率。目的:验证一个假设,即在对 EG 阳性患者进行的 EGD 检查中,BE 的检出率将显著高于单纯筛查 EGD 的阳性预测值 (PPV)。方法从有胃肠造影诊断的 EG 阳性患者中回顾性收集真实世界数据。从主治医生处获得患者的基线特征、风险因素和胃肠造影结果。以 EGD 筛查的 PPV 为参照,并根据文献中确定的 BE 患病率进行估算,美国胃食管反流病患者的患病率约为 10.6%。假设采用单侧 5%显著性水平的单一比例 t 检验进行检验。结果:来自 209 名患者的数据发现,有 60 人(28.7%)在胃肠造影检查中发现鲑鱼色粘膜,在组织病理学检查中发现专门的肠化生。但是,有 10 例(4.8%)目测病变直径为 1 厘米,因此不符合美国胃肠病学院对 BE 的定义,被排除在分析之外。在剩余的 199 名患者中,有 50 人(25.1%)的胃肠造影检查结果为 BE。在符合 ACG 筛查标准的患者中,28.9%(33/114)患有 BE。总体而言,与 EGD 筛查的 PPV 相比,BE 的检出率提高了 2.4 倍,而在 ACG 群体中,这一提高幅度为 2.7 倍。在≥65岁的ACG患者中,这一增幅接近2.5倍(检出率为25.9%):我们的数据表明,作为一项分流检查,EG 和 EC 可使接受 EGD 检查的 BE 患者更加丰富,与单独进行 EGD 筛查相比,EG 和 EC 可帮助更有效地利用内镜检查资源,在不减少符合筛查和诊断条件的患者数量的情况下减轻系统负担。
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引用次数: 0
Distinct patterns of microbiota and its function in end-stage liver cirrhosis correlate with antibiotic treatment, intestinal barrier impairment and systemic inflammation 终末期肝硬化患者微生物群及其功能的不同模式与抗生素治疗、肠道屏障受损和全身炎症有关
Pub Date : 2024-07-27 DOI: 10.1101/2024.07.27.24311099
Laura Buttler, David A. Velazquez Ramirez, Anja Tiede, Anna M. Conradi, Sabrina Woltemade, Robert Geffers, Birgit Bremer, Vera Spielmann, Julia Kahlhoefer, Anke Kraft, Dirk Schlueter, Markus Cornberg, Heiner Wedemeyer, Christine S. Falk, Marius Vital, Benjamin Maasoumy
Background: Decompensated liver cirrhosis (dLC) is associated with a dysbalanced microbiome, however, reasons for those observations and resulting consequences for patients are largely unexplored. We aimed to characterize bacterial and fungal components of gut microbiota applying quantitative genome-resolved metagenomics and investigate their relation with gut barrier integrity, inflammation and how this impacts the clinical outcome of dLC patients.Methods: Samples were collected prospectively from 95 consecutive hospitalized dLC patients between 2017 and 2022. Metagenomic shot-gun sequencing coupled to flow-cytometric analyses were performed for qualitative and quantitative insights into gut microbiota on a compositional and functional level. Plasma, CRP, Zonulin and CD163 were measured to investigate host functions. Competing risk analyses were performed to compare cirrhosis-related complications within 90 days.Results: Median baseline MELD was 16 and median age 57.6 years. Patients were clustered into three groups (G1-G3) showing greatly distinct microbial patterns. G1 displayed lowest diversity and highest Enterococcus relative abundance (77.97 %), whereas G2 was dominated by Bifidobacteria (52.31 %). G3 was most diverse and clustered most closely with HC. Bacterial concentrations in patients were lower compared with HC (median 2.65 x 109 cells/gram stool), especially for G1 (median of 2.65 x 109 cells/gram stool); G2 and G3 were in-between the two. Fungi were primarily detected in patient samples and an overgrowth in G1 that was dominated by Candida spp (51.63 %) was observed. Moreover, G1-patients most frequently received antibiotics (n=33; 86.8 %) at baseline and had higher plasma levels of Zonulin (p=0.044), CD163 (p=0.019) and a numerically higher incidence of infections (p=0.09). Conclusion: Different bacterial clusters were observed at qualitative and quantitative levels and correlated with fungal abundance. Antibiotic treatment contributed to dysbiosis in patients with dLC, which translated into impairment of the intestinal barrier, translocation and systemic inflammation.
背景:失代偿性肝硬化(dLC)与失衡的微生物群有关,然而,这些观察结果的原因及其对患者造成的后果在很大程度上尚未得到探讨。我们的目的是应用定量基因组分辨元基因组学描述肠道微生物群中细菌和真菌成分的特征,并研究它们与肠道屏障完整性、炎症的关系以及这如何影响肝硬化患者的临床预后:2017年至2022年期间,对95名连续住院的dLC患者进行了前瞻性样本采集。元基因组枪式测序与流式细胞分析相结合,从组成和功能层面对肠道微生物群进行定性和定量分析。通过测量血浆、CRP、Zonulin 和 CD163 来研究宿主功能。对90天内肝硬化相关并发症进行了竞争风险分析比较:基线MELD中位数为16,中位年龄为57.6岁。患者被分为三组(G1-G3),显示出截然不同的微生物模式。G1 组的多样性最低,肠球菌相对丰度最高(77.97%),而 G2 组则以双歧杆菌为主(52.31%)。G3 的多样性最高,与 HC 的聚类关系最密切。患者体内的细菌浓度低于 HC(中位数为 2.65 x 109 个细胞/克粪便),尤其是 G1(中位数为 2.65 x 109 个细胞/克粪便);G2 和 G3 介于两者之间。在患者样本中主要检测到真菌,在 G1 中主要是白色念珠菌属(51.63%)过度生长。此外,G1 患者基线时最常使用抗生素(33 人;86.8%),血浆中 Zonulin(P=0.044)和 CD163(P=0.019)水平较高,感染发生率也较高(P=0.09)。结论在定性和定量水平上观察到不同的细菌群,并与真菌数量相关。抗生素治疗导致 dLC 患者菌群失调,进而损害肠道屏障、转移和全身炎症。
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引用次数: 0
The impact of antibiotics on the presence of the protozoan anaerobe Blastocystis and the surrounding microbiome: a case study 抗生素对原生厌氧菌子囊虫及其周围微生物群存在的影响:案例研究
Pub Date : 2024-07-26 DOI: 10.1101/2024.07.25.24310942
Jamie M Newton, William JS Edwards, Gary Thompson, Eleni Gentekaki, Anastasios D. Tsaousis
Background: Blastocystis, the most prevalent eukaryotic gut microbe in humans, has a global distribution. Studies have linked its presence with distinct gut microbiome and metabolome profiles compared to those where the organism is absent. However, the in vivo effect of antibiotics on Blastocystis and the surrounding gut microbiome remains understudied. This case study aimed to explore how antibiotic consumption influences the presence of Blastocystis and the subsequent changes in the gut microbiome and metabolome of an individual with irritable bowel syndrome (IBS).Methods: Stool samples from an IBS patient, collected at various time points, were tested for Blastocystis presence using RT-PCR targeting the SSUrRNA gene, followed by sequencing of positive samples. Illumina sequencing determined the gut microbiome composition, while one-dimensional proton NMR spectroscopy analysed the metabolome composition. Statistical analyses were conducted to identify relationships between antibiotic consumption, bacterial diversity, metabolome composition, and Blastocystis presence.Results: Antibiotics significantly impacted the gut microbiome, with diversity declining early in the antibiotic course, then recovering later and post-course. Blastocystis was detected early, late, and post-course but not mid-course, coinciding with the decline in bacterial diversity. No significant differences were observed between Blastocystis-positive and Blastocystis-negative samples. However, bacterial composition significantly differed between samples collected before, early, and after the antibiotic course compared to those collected mid-course. Metabolite groups, including short-chain fatty acids, amino acids, and succinate, exhibited changes throughout the antibiotic course, indicating that gut metabolite composition is affected by antibiotic consumption. Discussion/Conclusion: While antibiotics did not significantly impact Blastocystis colonisation, they did cause a mid-course decline in microbial diversity and Blastocystis presence. The study also revealed significant alterations in important metabolites such as SCFAs and amino acids throughout the antibiotic course, with an altered metabolome observed post-course. This case study underscores the complex interactions between antibiotics, gut microbiota, and metabolites, highlighting the resilience of Blastocystis in the gut ecosystem.
背景:Blastocystis 是人类最常见的真核肠道微生物,在全球都有分布。研究表明,与不存在这种微生物的人群相比,存在这种微生物的人群的肠道微生物组和代谢组特征截然不同。然而,抗生素对布氏囊尾蚴及其周围肠道微生物组的体内影响仍未得到充分研究。本病例研究旨在探讨服用抗生素如何影响膀胱囊虫的存在以及肠易激综合征(IBS)患者肠道微生物组和代谢组的随之变化:采用针对 SSUrRNA 基因的 RT-PCR 技术检测肠易激综合征患者在不同时间点采集的粪便样本中是否存在 Blastocystis,然后对阳性样本进行测序。Illumina 测序确定了肠道微生物组的组成,一维质子核磁共振光谱分析了代谢组的组成。研究人员进行了统计分析,以确定抗生素用量、细菌多样性、代谢组组成和Blastocystis存在之间的关系:结果:抗生素对肠道微生物组产生了重大影响,多样性在使用抗生素初期下降,随后和用药后恢复。在使用抗生素的早期、晚期和用药后都检测到了囊泡菌,但在用药中期没有检测到,这与细菌多样性的下降相吻合。囊泡菌阳性样本与囊泡菌阴性样本之间没有明显差异。不过,与疗程中期采集的样本相比,抗生素疗程前、早期和后期采集的样本中的细菌组成存在明显差异。包括短链脂肪酸、氨基酸和琥珀酸在内的代谢物组在整个抗生素疗程中都发生了变化,这表明肠道代谢物组成受抗生素消耗的影响。讨论/结论:虽然抗生素对布氏囊虫的定植没有明显影响,但抗生素确实会导致微生物多样性和布氏囊虫存在的中期下降。研究还发现,在整个抗生素疗程中,SCFAs 和氨基酸等重要代谢物发生了显著变化,疗程后观察到代谢组发生了改变。该病例研究强调了抗生素、肠道微生物群和代谢物之间复杂的相互作用,突出了布氏囊虫在肠道生态系统中的恢复能力。
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引用次数: 0
Predictors of In-hospital Mortality among Cirrhotic Patients in Ethiopia: A Multicenter Retrospective Study 埃塞俄比亚肝硬化患者院内死亡率的预测因素:多中心回顾性研究
Pub Date : 2024-07-26 DOI: 10.1101/2024.07.25.24311017
Tamrat Petros Elias, Abate Bane Shewaye, Henok Fisseha Chichaybelu, Abdulsemed Mohammed Nur, Kaleb Assefa Berhane, Asteray Tsige Minyilshewa, Kibrab Bulto Kumsa, Biruck Mohammed Seid
AbstractBackground: Cirrhosis is a major global health problem and a leading cause of liver-related mortality.In Ethiopia specifically, cirrhosis is the 6th leading cause of death and is responsible for highhospitalization and mortality rates. However, until now, factors affecting in–hospital mortality inpatients admitted due to complications of liver cirrhosis are poorly understood. This study assessed thepredictors of in–hospital mortality among cirrhotic patients in Ethiopia.Methods: A retrospective cross–sectional study using data collected from the electronic medicalrecords of patients who were admitted for complications of liver cirrhosis between January 1, 2023,and March 31, 2024, in the medical wards of Adera Medical Center, St. Pauls Hospital MillenniumMedical College, and Tikur Anbessa Specialized Hospital. Frequency and cross-tabulation were usedfor descriptive statistics. Predictor variables with a p-value <0.25 in bivariate analyses were includedin the logistic regression. The adjusted odds ratio (AOR) with the corresponding 95% confidenceinterval (CI) was calculated to show the strength of the association. A p-value <0.05 was consideredstatistically significant.Results: Of the 299 patients included in the final analysis, the majority (79.6%) were males, and themedian age of the study participants was 45 (IQR, 36–56) years. Hepatitis B virus (32.1%) was themost common etiology, followed by alcohol (30.1%) and hepatitis C virus (13.4%). More than half(52.9%) of the patients were in Child-Pugh class C, and around a quarter (26.1%) of the patients hadcomorbidities. Ascites (69.2%), Upper gastrointestinal bleeding (50.5%), and hepatic encephalopathy(44.8%) were the most common forms of presentation. The in–hospital mortality rate was 25.4%. WestHaven Grade III or IV hepatic encephalopathy (AOR: 12.0; 95% CI 2.33 – 61.63; P <0.01),Hepatocellular Carcinoma (AOR: 9.05; 95% CI 2.18 – 37.14; P: 0.01), History of previous admissionwithin one year period (AOR: 6.80; 95% CI 2.18 – 21.18; P <0.01), Acute Kidney Injury (AOR: 6.47;95% CI 1.77 – 23.64; P <0.01), and Model for End–Stage Liver Disease– Sodium (MELD–Na) Score(AOR: 1.17; 95% CI 1.05 – 1.30; P: 0.02), were found to be predictors of in–hospital mortality.Conclusion: In–hospital mortality of cirrhotic patients is high in Ethiopia. West Haven grade III or IVhepatic encephalopathy is the leading cause of mortality. Hence, Prompt identification andmanagement of hepatic encephalopathy and its precipitant at an earlier stage is crucial for bettertreatment outcomes and survival.Keywords: Cirrhosis, In–hospital mortality, Ethiopia
摘要背景:肝硬化是一个重大的全球性健康问题,也是导致肝脏相关疾病死亡的主要原因。然而,到目前为止,人们对影响肝硬化并发症住院患者院内死亡率的因素还知之甚少。本研究评估了埃塞俄比亚肝硬化患者院内死亡率的预测因素:这是一项回顾性横断面研究,使用的数据来自 2023 年 1 月 1 日至 2024 年 3 月 31 日期间阿德拉医疗中心、圣保罗医院千禧医学院和提库尔安贝萨专科医院内科病房因肝硬化并发症住院患者的电子病历。使用频率和交叉表进行描述性统计。双变量分析中 p 值为 0.25 的预测变量被纳入逻辑回归。计算调整后的几率比(AOR)及相应的 95% 置信区间(CI),以显示相关性的强度。P值为0.05即为具有统计学意义:在纳入最终分析的 299 名患者中,大多数(79.6%)为男性,研究参与者的平均年龄为 45(IQR,36-56)岁。乙型肝炎病毒(32.1%)是最常见的病因,其次是酒精(30.1%)和丙型肝炎病毒(13.4%)。半数以上(52.9%)的患者属于 Child-Pugh C 级,约四分之一(26.1%)的患者有并发症。腹水(69.2%)、上消化道出血(50.5%)和肝性脑病(44.8%)是最常见的表现形式。院内死亡率为 25.4%。WestHaven III 级或 IV 级肝性脑病(AOR:12.0;95% CI 2.33 - 61.63;P <0.01)、肝细胞癌(AOR:9.05;95% CI 2.18 - 37.14;P:0.01)、一年内有入院史(AOR:6.80;95% CI 2.18 - 21.18;P <0.01)、急性肾损伤(AOR:6.47;95% CI 1.77 - 23.64;P <0.01)和终末期肝病模型-钠(MELD-Na)评分(AOR:1.17;95% CI 1.05 - 1.30;P:0.02)被认为是院内死亡率的预测因素:结论:在埃塞俄比亚,肝硬化患者的院内死亡率很高。西黑文 III 级或 IV 级肝性脑病是死亡的主要原因。因此,在早期阶段及时发现和处理肝性脑病及其诱发因素对于改善治疗效果和提高存活率至关重要:肝硬化 院内死亡率 埃塞俄比亚
{"title":"Predictors of In-hospital Mortality among Cirrhotic Patients in Ethiopia: A Multicenter Retrospective Study","authors":"Tamrat Petros Elias, Abate Bane Shewaye, Henok Fisseha Chichaybelu, Abdulsemed Mohammed Nur, Kaleb Assefa Berhane, Asteray Tsige Minyilshewa, Kibrab Bulto Kumsa, Biruck Mohammed Seid","doi":"10.1101/2024.07.25.24311017","DOIUrl":"https://doi.org/10.1101/2024.07.25.24311017","url":null,"abstract":"Abstract\u0000Background: Cirrhosis is a major global health problem and a leading cause of liver-related mortality.\u0000In Ethiopia specifically, cirrhosis is the 6th leading cause of death and is responsible for high\u0000hospitalization and mortality rates. However, until now, factors affecting in–hospital mortality in\u0000patients admitted due to complications of liver cirrhosis are poorly understood. This study assessed the\u0000predictors of in–hospital mortality among cirrhotic patients in Ethiopia.\u0000Methods: A retrospective cross–sectional study using data collected from the electronic medical\u0000records of patients who were admitted for complications of liver cirrhosis between January 1, 2023,\u0000and March 31, 2024, in the medical wards of Adera Medical Center, St. Pauls Hospital Millennium\u0000Medical College, and Tikur Anbessa Specialized Hospital. Frequency and cross-tabulation were used\u0000for descriptive statistics. Predictor variables with a p-value &lt;0.25 in bivariate analyses were included\u0000in the logistic regression. The adjusted odds ratio (AOR) with the corresponding 95% confidence\u0000interval (CI) was calculated to show the strength of the association. A p-value &lt;0.05 was considered\u0000statistically significant.\u0000Results: Of the 299 patients included in the final analysis, the majority (79.6%) were males, and the\u0000median age of the study participants was 45 (IQR, 36–56) years. Hepatitis B virus (32.1%) was the\u0000most common etiology, followed by alcohol (30.1%) and hepatitis C virus (13.4%). More than half\u0000(52.9%) of the patients were in Child-Pugh class C, and around a quarter (26.1%) of the patients had\u0000comorbidities. Ascites (69.2%), Upper gastrointestinal bleeding (50.5%), and hepatic encephalopathy\u0000(44.8%) were the most common forms of presentation. The in–hospital mortality rate was 25.4%. West\u0000Haven Grade III or IV hepatic encephalopathy (AOR: 12.0; 95% CI 2.33 – 61.63; P &lt;0.01),\u0000Hepatocellular Carcinoma (AOR: 9.05; 95% CI 2.18 – 37.14; P: 0.01), History of previous admission\u0000within one year period (AOR: 6.80; 95% CI 2.18 – 21.18; P &lt;0.01), Acute Kidney Injury (AOR: 6.47;\u000095% CI 1.77 – 23.64; P &lt;0.01), and Model for End–Stage Liver Disease– Sodium (MELD–Na) Score\u0000(AOR: 1.17; 95% CI 1.05 – 1.30; P: 0.02), were found to be predictors of in–hospital mortality.\u0000Conclusion: In–hospital mortality of cirrhotic patients is high in Ethiopia. West Haven grade III or IV\u0000hepatic encephalopathy is the leading cause of mortality. Hence, Prompt identification and\u0000management of hepatic encephalopathy and its precipitant at an earlier stage is crucial for better\u0000treatment outcomes and survival.\u0000Keywords: Cirrhosis, In–hospital mortality, Ethiopia","PeriodicalId":501258,"journal":{"name":"medRxiv - Gastroenterology","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of SARS-CoV-2 Persistent Intestinal Epithelial Syndrome (SPIES) as a Novel Disease Entity using Clinical, Histologic, and RNA Programmatic Data 利用临床、组织学和 RNA 程序数据将 SARS-CoV-2 肠上皮细胞持续综合征 (SPIES) 鉴定为一种新型疾病实体
Pub Date : 2024-07-25 DOI: 10.1101/2024.07.18.24310647
Thomas Wallach, Ahmed Soliman, John Agboola, Shagun Sharma, Lais Araujo Coelho, Meredith Pittman, Christos Chatzinakos, Sergios-Orestis Kolokotronis
Abstract Long COVID (LC) remains an ongoing issue and one which has created a substantial burden of disease. Gastrointestinal LC is relatively poorly understood. In this study we characterize a syndrome of persistent SARS-CoV2 viral material via clinical and histologic data, and RNA sequencingMethodsWe reviewed patients aged 5-22 years with an esophagogastroduodenoscopy (EGD) for gastrointestinal (GI) symptoms from 6/2020-6/2023, excluding patients with known histologic disease. Biopsies were sent for immunohistochemical staining. Clinical data was collected. Duodenal, ileal, cecal, and sigmoid colon samples were stained for SARS-CoV-2 using a SARS-CoV-2 nucleocapsid antibody. Slides were reviewed by a blinded pathologist. 8 patients with known duodenal SARS-CoV-2 nucleocapsid antigen (SC-NA) positivity and 8 demographically matched IBS matched patients from prior to 2020 were identified for RNA sequencing comparison. Results were compared with public data from the Gene Expression Omnibus (GEO) data repository for intestinal tissue with IBS and epithelial tissues with active SARS-CoV2 infection.ResultsOf 30 patients, fifteen (50%) were identified to have positive SC-NA . 3 (20%) had received at least a single SARS-CoV2 vaccine in the + cohort, and 8 (53.3%) in the - (P=0.05). Primary symptoms were pain (86%, nausea (66.6%), and weight loss (60%). 37.5% of patients with colonic SC-NA displayed hematochezia. 33% of + patients showed elevated ESR/CRP. Mean + calprotectin was 317.3 vs. 156.4 (p=0.2). 11/15 (73.3%) +SC-NA had large lymphoid aggregates (LLA) (p = 0.00338). RNA expression was consistent with known acute SARS-CoV2 infection. Hub network analysis showed a tight shift in RNA expression centered around HSPE-1p26, with involvement of known SARS-CoV2 immune mediators like NEAT1. DGE comparative analysis with IBS and acute SARS-CoV2 infection showed higher overlap with acute infection vs. IBS. FGSEA analysis with the same source data demonstrated the same.ConclusionsOur findings establish a syndrome mediated by persistent viral infection (SARS-CoV2 Persistent Intestinal Epithelial Syndrome (SPIES)). We hypothesize that persistent sparse infection drives ongoing immune signaling altering movement and function, creating epithelial and movement effects overlapping with DGBI and IBD
摘要 长期慢性胆囊炎(LC)仍然是一个持续存在的问题,它造成了巨大的疾病负担。人们对胃肠道 LC 的了解相对较少。在本研究中,我们通过临床和组织学数据以及 RNA 测序,描述了一种持续性 SARS-CoV2 病毒物质综合征的特征。方法 我们回顾了 2020 年 6 月至 2023 年 6 月期间因胃肠道(GI)症状而接受食管胃十二指肠镜检查(EGD)的 5-22 岁患者,排除了已知有组织学疾病的患者。活组织切片被送去进行免疫组化染色。收集临床数据。使用 SARS-CoV-2 核壳抗体对十二指肠、回肠、盲肠和乙状结肠样本进行 SARS-CoV-2 染色。切片由盲法病理学家审阅。确定了 8 名已知十二指肠 SARS-CoV-2 核头状抗原 (SC-NA) 阳性的患者和 8 名 2020 年以前的人口统计学匹配的 IBS 患者进行 RNA 测序比较。结果 在 30 例患者中,15 例(50%)被确定为 SC-NA 阳性。在 "+"组群中有 3 人(20%)至少接种过一次 SARS-CoV2 疫苗,在"-"组群中有 8 人(53.3%)至少接种过一次 SARS-CoV2 疫苗(P=0.05)。主要症状为疼痛(86%)、恶心(66.6%)和体重减轻(60%)。37.5%的结肠 SC-NA 患者出现血尿。33%的 + 患者出现 ESR/CRP 升高。平均 + calprotectin 为 317.3 对 156.4(P=0.2)。11/15(73.3%)+SC-NA 有大淋巴细胞聚集(LLA)(p=0.00338)。RNA 表达与已知的急性 SARS-CoV2 感染一致。枢纽网络分析显示,以 HSPE-1p26 为中心的 RNA 表达发生了紧密的变化,已知的 SARS-CoV2 免疫介质(如 NEAT1)也参与其中。与肠易激综合征和急性 SARS-CoV2 感染的 DGE 比较分析显示,急性感染与肠易激综合征的重叠率更高。结论我们的研究结果确定了一种由持续病毒感染介导的综合征(SARS-CoV2 肠上皮细胞持续综合征 (SPIES))。我们假设,持续的稀疏感染会驱动持续的免疫信号改变运动和功能,产生与 DGBI 和 IBD 重叠的上皮和运动效应。
{"title":"Identification of SARS-CoV-2 Persistent Intestinal Epithelial Syndrome (SPIES) as a Novel Disease Entity using Clinical, Histologic, and RNA Programmatic Data","authors":"Thomas Wallach, Ahmed Soliman, John Agboola, Shagun Sharma, Lais Araujo Coelho, Meredith Pittman, Christos Chatzinakos, Sergios-Orestis Kolokotronis","doi":"10.1101/2024.07.18.24310647","DOIUrl":"https://doi.org/10.1101/2024.07.18.24310647","url":null,"abstract":"Abstract Long COVID (LC) remains an ongoing issue and one which has created a substantial burden of disease. Gastrointestinal LC is relatively poorly understood. In this study we characterize a syndrome of persistent SARS-CoV2 viral material via clinical and histologic data, and RNA sequencing\u0000Methods\u0000We reviewed patients aged 5-22 years with an esophagogastroduodenoscopy (EGD) for gastrointestinal (GI) symptoms from 6/2020-6/2023, excluding patients with known histologic disease. Biopsies were sent for immunohistochemical staining. Clinical data was collected. Duodenal, ileal, cecal, and sigmoid colon samples were stained for SARS-CoV-2 using a SARS-CoV-2 nucleocapsid antibody. Slides were reviewed by a blinded pathologist. 8 patients with known duodenal SARS-CoV-2 nucleocapsid antigen (SC-NA) positivity and 8 demographically matched IBS matched patients from prior to 2020 were identified for RNA sequencing comparison. Results were compared with public data from the Gene Expression Omnibus (GEO) data repository for intestinal tissue with IBS and epithelial tissues with active SARS-CoV2 infection.\u0000Results\u0000Of 30 patients, fifteen (50%) were identified to have positive SC-NA . 3 (20%) had received at least a single SARS-CoV2 vaccine in the + cohort, and 8 (53.3%) in the - (P=0.05). Primary symptoms were pain (86%, nausea (66.6%), and weight loss (60%). 37.5% of patients with colonic SC-NA displayed hematochezia. 33% of + patients showed elevated ESR/CRP. Mean + calprotectin was 317.3 vs. 156.4 (p=0.2). 11/15 (73.3%) +SC-NA had large lymphoid aggregates (LLA) (p = 0.00338). RNA expression was consistent with known acute SARS-CoV2 infection. Hub network analysis showed a tight shift in RNA expression centered around HSPE-1p26, with involvement of known SARS-CoV2 immune mediators like NEAT1. DGE comparative analysis with IBS and acute SARS-CoV2 infection showed higher overlap with acute infection vs. IBS. FGSEA analysis with the same source data demonstrated the same.\u0000Conclusions\u0000Our findings establish a syndrome mediated by persistent viral infection (SARS-CoV2 Persistent Intestinal Epithelial Syndrome (SPIES)). We hypothesize that persistent sparse infection drives ongoing immune signaling altering movement and function, creating epithelial and movement effects overlapping with DGBI and IBD","PeriodicalId":501258,"journal":{"name":"medRxiv - Gastroenterology","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Peripheral blood DNA methylation signatures predict response to vedolizumab and ustekinumab in adult patients with Crohn's disease: The EPIC-CD study 外周血DNA甲基化特征可预测成人克罗恩病患者对维多单抗和乌司替尼的反应:EPIC-CD研究
Pub Date : 2024-07-25 DOI: 10.1101/2024.07.25.24310949
Vincent W Joustra, Andrew Yung Fong Li Yim, Peter Henneman, Ishtu L Hageman, Tristan de Waard, Evgeni Levin, Alexandra Noble, Thomas P Chapman, Femke Mol, Sarah van Zon, Donghyeok Lee, Colleen GC McGregor, Alex T Adams, Jack J Satsangi, Wouter J de Jonge, Geert R D'Haens, EPIC-CD Consortium
Biological therapeutics are now widely used in Crohn′s disease (CD), with evidence of efficacy from randomized trials and real-world experience. Primary non-response is a common, poorly understood problem. We assessed blood methylation as a predictor of response to vedolizumab (VDZ, anti-a4b7 integrin) or ustekinumab (USTE, anti-IL-12/23p40). We report a two-center, prospective cohort study in which we profiled the peripheral blood DNA methylome of 184 adult male and female CD patients prior to and during treatment with VDZ or USTE in a discovery (n=126) and an external validation cohort (n=58). We defined epigenetic biomarkers that were stable over time and associated with combined clinical and endoscopic response to VDZ or USTE with an area under curve (AUC) of 0.87 and 0.89, respectively. We validated these models in an external cohort yielding an AUC of 0.75 for both VDZ and USTE. These data will now be prospectively tested in a multicenter randomized clinical trial.
目前,生物疗法已广泛应用于克罗恩病(CD)的治疗,随机试验和实际经验都证明了其疗效。原发性无应答是一个常见的问题,却鲜为人知。我们评估了血液甲基化作为对维妥珠单抗(VDZ,抗a4b7整合素)或乌斯特库单抗(USTE,抗IL-12/23p40)反应的预测因素。我们报告了一项双中心前瞻性队列研究,在发现队列(n=126)和外部验证队列(n=58)中,我们分析了184名成年男性和女性CD患者在接受VDZ或USTE治疗前和治疗期间的外周血DNA甲基组。我们定义了表观遗传生物标志物,这些标志物随时间变化稳定,并与 VDZ 或 USTE 的临床和内镜综合反应相关,其曲线下面积 (AUC) 分别为 0.87 和 0.89。我们在外部队列中验证了这些模型,结果显示 VDZ 和 USTE 的曲线下面积均为 0.75。现在,我们将在一项多中心随机临床试验中对这些数据进行前瞻性测试。
{"title":"Peripheral blood DNA methylation signatures predict response to vedolizumab and ustekinumab in adult patients with Crohn's disease: The EPIC-CD study","authors":"Vincent W Joustra, Andrew Yung Fong Li Yim, Peter Henneman, Ishtu L Hageman, Tristan de Waard, Evgeni Levin, Alexandra Noble, Thomas P Chapman, Femke Mol, Sarah van Zon, Donghyeok Lee, Colleen GC McGregor, Alex T Adams, Jack J Satsangi, Wouter J de Jonge, Geert R D'Haens, EPIC-CD Consortium","doi":"10.1101/2024.07.25.24310949","DOIUrl":"https://doi.org/10.1101/2024.07.25.24310949","url":null,"abstract":"Biological therapeutics are now widely used in Crohn′s disease (CD), with evidence of efficacy from randomized trials and real-world experience. Primary non-response is a common, poorly understood problem. We assessed blood methylation as a predictor of response to vedolizumab (VDZ, anti-a4b7 integrin) or ustekinumab (USTE, anti-IL-12/23p40). We report a two-center, prospective cohort study in which we profiled the peripheral blood DNA methylome of 184 adult male and female CD patients prior to and during treatment with VDZ or USTE in a discovery (n=126) and an external validation cohort (n=58). We defined epigenetic biomarkers that were stable over time and associated with combined clinical and endoscopic response to VDZ or USTE with an area under curve (AUC) of 0.87 and 0.89, respectively. We validated these models in an external cohort yielding an AUC of 0.75 for both VDZ and USTE. These data will now be prospectively tested in a multicenter randomized clinical trial.","PeriodicalId":501258,"journal":{"name":"medRxiv - Gastroenterology","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First Insights into microbial changes within an Inflammatory Bowel Disease Family Cohort study 炎症性肠病家族队列研究中微生物变化的第一手资料
Pub Date : 2024-07-24 DOI: 10.1101/2024.07.23.24310327
Philipp Rausch, Ilka Ratjen, Lukas Tittmann, Janna Enderle, Eike Matthias Wacker, Kathrin Jaeger, Malte Christoph Ruehlemann, Pierre Ellul, Robert Kruse, Jonas Halfvarsson, Dirk Roggenbuck, David Ellinghaus, Gunnar Jacobs, Michael Krawczak, Stefan Schreiber, Corinna Bang, Wolfgang Lieb, Andre Franke
Background: The prospective Kiel Inflammatory Bowel Disease (IBD) Family Cohort Study (KINDRED cohort) was initiated in 2013 to systematically and extensively collect data and biosamples from index IBD patients and their relatives (e.g., blood, stool), a population at high risk for IBD development. Regular follow-ups were conducted to collect updated health and lifestyle information, to obtain new biosamples, and to capture the incidence of IBD during development. By combining taxonomic and imputed functional microbial data collected at successive time points with extensive anthropometric, medical, nutritional, and social information, this study aimed to characterize the factors influencing the microbiota in health and disease via detailed ecological analyses.Results: Using two dysbiosis metrics (MD-index, GMHI) trained on the German KINDRED cohort, we identified strong and generalizable gradients within and across different IBD cohorts, which correspond strongly with IBD pathologies, physiological manifestations of inflammation (e.g., Bristol stool score, ASCA IgA/IgG), genetic risk for IBD, and general risk of disease onset. Anthropometric and medical factors influencing transit time strongly modify bacterial communities. Various Enterobacteriaceae (e.g., Klebsiella sp.) and opportunistic Clostridia pathogens (e.g., C. XIVa clostridioforme), characterize in combination with ectopic oral taxa (e.g. Veillonella sp., Cand. Saccharibacteria sp., Fusobacterium nucleatum) the distinct and chaotic IBD-specific communities. Functionally, amino acid metabolism and flagellar assembly are beneficial, while mucolytic functions are associated with IBD. Conclusions: Our findings demonstrate broad-scale ecological patterns which indicate drastic state transitions of communities into characteristically chaotic communities in IBD patients. These patterns appear to be universal across cohorts and influence physiological signs of inflammation, display high resilience, but show only little heritability/intrafamily transmission.
研究背景前瞻性基尔炎症性肠病(IBD)家族队列研究(KINDRED 队列)于 2013 年启动,旨在系统、广泛地收集指数 IBD 患者及其亲属(IBD 高危人群)的数据和生物样本(如血液、粪便)。研究人员定期进行随访,以收集最新的健康和生活方式信息,获取新的生物样本,并掌握 IBD 在发展过程中的发病率。通过将连续时间点收集到的微生物分类学数据和功能性微生物估算数据与广泛的人体测量、医疗、营养和社会信息相结合,该研究旨在通过详细的生态学分析来描述影响健康和疾病的微生物群的因素:利用在德国 KINDRED 队列中训练的两个菌群失调度量指标(MD-index、GMHI),我们在不同的 IBD 队列内部和之间发现了强烈的、可推广的梯度,这些梯度与 IBD 病理、炎症的生理表现(如布里斯托尔粪便评分、ASCA IgA/IgG)、IBD 遗传风险和一般发病风险密切相关。影响粪便转运时间的人体测量和医疗因素会强烈改变细菌群落。各种肠杆菌科细菌(如克雷伯氏菌)和机会性梭状芽孢杆菌病原体(如 XIVa 梭状芽孢杆菌)与异位口腔类群(如 Veillonella sp.、Cand. Saccharibacteria sp.、Fusobacterium nucleatum)共同构成了独特而混乱的 IBD 特异性群落。从功能上看,氨基酸代谢和鞭毛组装是有益的,而粘液溶解功能则与 IBD 相关。结论:我们的研究结果展示了大范围的生态模式,表明 IBD 患者群落的状态急剧转变为特征性的混乱群落。这些模式似乎在不同群体中具有普遍性,并影响炎症的生理迹象,显示出很强的恢复能力,但遗传性/家族内传播却很小。
{"title":"First Insights into microbial changes within an Inflammatory Bowel Disease Family Cohort study","authors":"Philipp Rausch, Ilka Ratjen, Lukas Tittmann, Janna Enderle, Eike Matthias Wacker, Kathrin Jaeger, Malte Christoph Ruehlemann, Pierre Ellul, Robert Kruse, Jonas Halfvarsson, Dirk Roggenbuck, David Ellinghaus, Gunnar Jacobs, Michael Krawczak, Stefan Schreiber, Corinna Bang, Wolfgang Lieb, Andre Franke","doi":"10.1101/2024.07.23.24310327","DOIUrl":"https://doi.org/10.1101/2024.07.23.24310327","url":null,"abstract":"Background: The prospective Kiel Inflammatory Bowel Disease (IBD) Family Cohort Study (KINDRED cohort) was initiated in 2013 to systematically and extensively collect data and biosamples from index IBD patients and their relatives (e.g., blood, stool), a population at high risk for IBD development. Regular follow-ups were conducted to collect updated health and lifestyle information, to obtain new biosamples, and to capture the incidence of IBD during development. By combining taxonomic and imputed functional microbial data collected at successive time points with extensive anthropometric, medical, nutritional, and social information, this study aimed to characterize the factors influencing the microbiota in health and disease via detailed ecological analyses.\u0000Results: Using two dysbiosis metrics (MD-index, GMHI) trained on the German KINDRED cohort, we identified strong and generalizable gradients within and across different IBD cohorts, which correspond strongly with IBD pathologies, physiological manifestations of inflammation (e.g., Bristol stool score, ASCA IgA/IgG), genetic risk for IBD, and general risk of disease onset. Anthropometric and medical factors influencing transit time strongly modify bacterial communities. Various Enterobacteriaceae (e.g., Klebsiella sp.) and opportunistic Clostridia pathogens (e.g., C. XIVa clostridioforme), characterize in combination with ectopic oral taxa (e.g. Veillonella sp., Cand. Saccharibacteria sp., Fusobacterium nucleatum) the distinct and chaotic IBD-specific communities. Functionally, amino acid metabolism and flagellar assembly are beneficial, while mucolytic functions are associated with IBD. Conclusions: Our findings demonstrate broad-scale ecological patterns which indicate drastic state transitions of communities into characteristically chaotic communities in IBD patients. These patterns appear to be universal across cohorts and influence physiological signs of inflammation, display high resilience, but show only little heritability/intrafamily transmission.","PeriodicalId":501258,"journal":{"name":"medRxiv - Gastroenterology","volume":"132 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-omics data integration identifies novel biomarkers and patient subgroups in inflammatory bowel disease 多组学数据整合确定炎症性肠病的新型生物标记物和患者亚群
Pub Date : 2024-07-24 DOI: 10.1101/2024.07.23.24310846
António José Preto, Shaurya Chanana, Daniel Ence, Matt D Healy, Daniel Domingo-Fernández, Kiana A West
Objective: In this work, we explored one of the largest multi-omics cohorts in Inflammatory Bowel Disease (IBD), the Study of a Prospective Adult Research Cohort (SPARC IBD), with the goal of identifying predictive biomarkers for Crohn's Disease (CD) and Ulcerative Colitis (UC) and elucidating patient subtypes. Design: We analyzed genomics, transcriptomics (gut biopsy samples), and proteomics (blood plasma) from hundreds of patients from SPARC IBD. We trained a machine learning model that classifies UC vs. CD samples. In parallel, we leveraged multi-omics data integration to unveil patient subgroups in each of the two indications independently and analyzed the molecular phenotypes of these patient subpopulations.Results: The high performance of the model showed that multi-omics signatures are able to discriminate between the two indications. The most predictive features of the model, both known and novel omics signatures for IBD, can potentially be used as diagnostic biomarkers. Patient subgroups analysis in each indication uncovered omics features associated with disease severity in UC patients, and with tissue inflammation in CD patients. This culminates with the observation of two CD subpopulations characterized by distinct inflammation profiles.Conclusion: Our work unveiled potential biomarkers to discriminate between CD and UC and to stratify each population into well-defined subgroups, offering promising avenues for the application of precision medicine strategies.
研究目的在这项研究中,我们探索了炎症性肠病(IBD)领域最大的多组学队列之一--前瞻性成人研究队列(SPARC IBD),目的是确定克罗恩病(CD)和溃疡性结肠炎(UC)的预测性生物标记物,并阐明患者亚型。设计:我们分析了数百名 SPARC IBD 患者的基因组学、转录组学(肠道活检样本)和蛋白质组学(血浆)。我们训练了一个机器学习模型来对 UC 与 CD 样本进行分类。与此同时,我们利用多组学数据整合技术揭示了这两种适应症各自独立的患者亚群,并分析了这些患者亚群的分子表型:该模型的高性能表明,多组学特征能够区分两种适应症。该模型最具预测性的特征,包括已知的和新的IBD组学特征,都有可能被用作诊断生物标志物。每个适应症的患者亚组分析发现了与 UC 患者疾病严重程度和 CD 患者组织炎症相关的全局组学特征。最终,我们观察到了两个以不同炎症特征为特征的 CD 亚群:我们的研究揭示了区分 CD 和 UC 的潜在生物标志物,并将两种人群划分为定义明确的亚组,为精准医疗策略的应用提供了前景广阔的途径。
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引用次数: 0
The Effects of Heart Rate Variability Biofeedback on Functional Gastrointestinal Disorders: A Scoping Review 心率变异生物反馈对功能性胃肠病的影响:范围综述
Pub Date : 2024-07-23 DOI: 10.1101/2024.07.22.24310788
Ashley G Pereira, Lily Fu, William Xu, Armen Gharibans, Gregory O'Grady
Functional Gastrointestinal Disorders (FGID) are a group of symptom-based disorders that occur across the alimentary tract and have a high prevalence globally in both adults and children. These symptoms are chronic and/or recurrent and often have substantial effects on quality of life. Their incidence is tied to multiple factors, including gut-brain axis imbalance, which includes autonomic dysregulation related to a relative withdrawal of vagal activity. Heart rate variability biofeedback (HRVB) is a non-invasive intervention that can influence autonomic activity and has shown benefit for diverse conditions including depression and anxiety, however the evidence of its effect has not yet been systematically assessed in FGIDs. This scoping review aimed to collate and evaluate the available literature regarding HRVB and FGIDs. We systematically searched four medical databases. Four articles met inclusion criteria for being interventional studies using HRVB in FGIDs. These were heterogeneous, including both paediatric and adult as well different subtypes of FGID. Two of the four studies demonstrated significant improvements from HRVB interventions in FGID symptoms while the other two found no significant difference. Scoping evaluation indicated this inconsistency likely reflects heterogeneous populations and study designs. Further scoping review of the broader HRVB literature also discovered that at least six weeks of HRVB is required to observe an impact on FGID symptoms and defined recommended guidance for performing future evaluations of HRVB in FGIDs. Evidence on HRVB for FGID is emergent, however HRVB appears a promising intervention when administered optimally. Further studies using best-practice techniques are required.
功能性胃肠病(FGID)是一组以症状为基础的疾病,发生在整个消化道,在全球成人和儿童中的发病率都很高。这些症状是慢性和/或复发性的,通常对生活质量有很大影响。其发病率与多种因素有关,包括肠脑轴失衡,其中包括与迷走神经活动相对减弱有关的自律神经失调。心率变异性生物反馈疗法(HRVB)是一种非侵入性干预措施,可影响自律神经活动,对包括抑郁症和焦虑症在内的多种疾病均有疗效,但尚未对其在 FGIDs 中的效果进行系统评估。本范围综述旨在整理和评估有关 HRVB 和 FGIDs 的现有文献。我们系统地检索了四个医学数据库。有四篇文章符合纳入标准,即在 FGIDs 中使用 HRVB 进行干预性研究。这些研究内容各不相同,包括儿科和成人以及不同亚型的 FGID。四项研究中有两项研究表明,HRVB干预对FGID症状有明显改善,而另外两项研究则发现没有明显差异。范围界定评估表明,这种不一致性可能反映了不同的人群和研究设计。对更广泛的 HRVB 文献的进一步范围界定审查还发现,至少需要进行六周的 HRVB 才能观察到对 FGID 症状的影响,并确定了未来对 FGID 进行 HRVB 评估的建议指南。有关 HRVB 治疗 FGID 的证据尚不成熟,但如果以最佳方式实施,HRVB 似乎是一种很有前景的干预措施。需要使用最佳实践技术开展进一步研究。
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引用次数: 0
Inflammatory Bowel Disease in patients with Primary Sclerosing Cholangitis: a distinct form of colitis 原发性硬化性胆管炎患者的炎症性肠病:一种不同形式的结肠炎
Pub Date : 2024-07-23 DOI: 10.1101/2024.07.23.24310848
Amber Bangma, Paola Pibiri, Sofie de Jong, Emilia V. Bigaeva, Gwenny M.P.J. Verstappen, Gursah Kats-Urgulu, Marcela A. Hermoso, Monique G.P. van der Wijst, Johannes R. Bjork, Shiqiang Sun, Naomi Karmi, Frans G.M. Kroese, Arnau Vich Vila, Klaas Nico Faber, Rinse K. Weersma, Werna T.C. Uniken Venema, Eleonora A.M. Festen
Background and aimsPrimary sclerosing cholangitis (PSC) is an inflammatory disorder of the bile ducts, often accompanied by inflammatory bowel disease (PSC-IBD). Substantial differences in clinical presentation are observed between PSC-IBD and ulcerative colitis (UC). In this study we aim to find distinct pathomechanisms for PSC-IBD using single-cell mRNA sequencing. MethodsForty-seven colonic mucosal biopsies of PSC-IBD (n=24), UC (n=18) (where possible matched inflamed (I) non-inflamed (NI)), and non-IBD subjects (n=5) were collected and dissociated. Library preparation and processing for sequencing was followed by differential abundance, differential expression, and cell-cell-interaction analyses. Stainings for DUOX2 and HLA-DR were applied on tissue sections. ResultsIn total, 71,798 cells comprised 54 distinct cell types, including a new cell type: the DUOX2+ enterocyte, mainly present in inflamed colon and acting as antigen presenting cells (HLA-DR+). Stem cells exhibited increased abundances in PSC-NI but not in UC-NI. Additionally, we found distinct gene expression profiles in PSC and UC which were related to inflammation: while mainly inflammatory monocytes were activated in PSC inflammation, and inflammatory fibroblasts were activated in UC inflammation. ConclusionOur study found a new cell type, the DUOX2+ enterocyte that is primarily present in inflamed conditions, and based on their expression profile, potentially perform antigen presentation. Moreover, we highlight that PSC-IBD, but not UC, is characterized by the activation of inflammatory HLA-DRB1+ monocytes, which are likely involved in the activation of CD4+ T cells. Notably, we observed an increased abundance of stem cells in non-inflamed PSC-IBD, possibly linked to the elevated risk of colorectal cancer in PSC-IBD.
背景和目的原发性硬化性胆管炎(PSC)是一种胆管炎症性疾病,通常伴有炎症性肠病(PSC-IBD)。据观察,PSC-IBD 和溃疡性结肠炎(UC)在临床表现上存在很大差异。本研究旨在利用单细胞 mRNA 测序找出 PSC-IBD 的不同病理机制。方法收集并分离 47 例 PSC-IBD(n=24)、UC(n=18)(尽可能匹配炎症(I)非炎症(NI))和非 IBD 受试者(n=5)的结肠粘膜活检组织。文库制备和测序处理后进行差异丰度、差异表达和细胞-细胞相互作用分析。对组织切片进行了 DUOX2 和 HLA-DR 染色。结果总共发现了 71798 个细胞,包括 54 种不同的细胞类型,其中包括一种新的细胞类型:DUOX2+ 肠细胞,主要存在于发炎的结肠中,是抗原呈递细胞(HLA-DR+)。干细胞在 PSC-NI 中的丰度有所增加,而在 UC-NI 中则没有。此外,我们还发现了 PSC 和 UC 中与炎症有关的不同基因表达谱:PSC 炎症主要激活炎性单核细胞,而 UC 炎症则激活炎性成纤维细胞。结论我们的研究发现了一种新的细胞类型--DUOX2+肠细胞,这种细胞主要存在于炎症环境中,根据其表达谱,可能具有抗原呈递功能。此外,我们还强调,PSC-IBD(而非 UC)的特征是炎性 HLA-DRB1+ 单核细胞的活化,而这些单核细胞很可能参与了 CD4+ T 细胞的活化。值得注意的是,我们观察到非炎症性PSC-IBD中干细胞数量增加,这可能与PSC-IBD结直肠癌风险升高有关。
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引用次数: 0
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medRxiv - Gastroenterology
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