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Reply to Liang et al 对梁等人的答复
IF 29.4 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2024-11-19 DOI: 10.1053/j.gastro.2024.11.005
Alice Boilève, Michel Ducreux, Fanny Jaulin
No Abstract
无摘要
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引用次数: 0
Hypoxic and acidic tumor microenvironment-driven AVL9 promotes chemoresistance of pancreatic ductal adenocarcinoma via the AVL9-IκBα-SKP1 complex 缺氧和酸性肿瘤微环境驱动的 AVL9 通过 AVL9-IκBα-SKP1 复合物促进胰腺导管腺癌的化疗抗性
IF 29.4 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2024-11-19 DOI: 10.1053/j.gastro.2024.10.042
Jinsheng Ding, Yongjie Xie, Ziyun Liu, Zhaoyu Zhang, Bo Ni, Jingrui Yan, Tianxing Zhou, Jihui Hao

Background & Aims

Gemcitabine combined with albumin-paclitaxel (AG) is a crucial therapeutic option for pancreatic ductal adenocarcinoma (PDAC). However, the response to chemotherapy is relatively poor, with rapid development of resistance. The aim of this study was to explore the mechanism of resistance to AG and to develop strategies that can sensitize the AG regimen.

Methods

We utilized organoid models, patient-derived xenografts (PDX), and genetically engineered mouse models (GEMM) in our study. Chromatin-Immunoprecipitation (Ch-IP), double luciferase assay, Co-immunoprecipitation (Co-IP), and far-western blotting analysis were performed to investigate the mechanism. The AVL9 inhibitors were identified through protein structure analysis and molecular docking analysis, and their efficacy was verified in PDX, PDOX, and KPC models.

Results

Through multi-strategy screening, we identified AVL9 as a key target for AG resistance in PDAC. Its tumor-promoting effects were confirmed in our clinical cohorts. Mechanistically, HIF-1α, a hypoxia-related transcription factor, drives the expression of AVL9. AVL9 acts as a scaffold that facilitates the binding of IκBα to SKP1, leading to enhanced ubiquitination and degradation of IκBα, which further activates the NF-κB pathway. The potential AVL9-targeting inhibitor, Edotecarin, was shown to reverse AG chemo-resistance in PDAC.

Conclusion

AVL9 expression is driven by HIF1α in PDAC. The physical interaction of AVL9, IκBα, and SKP1 provides a novel molecular mechanism for the abnormal activation of the NF-κB pathway. Therefore, the AVL9-targeting drug Edotecarin could be a promising therapeutic strategy for sensitizing PDAC to AG.
背景& 目的吉西他滨联合白蛋白-紫杉醇(AG)是治疗胰腺导管腺癌(PDAC)的重要选择。然而,化疗反应相对较差,耐药性发展迅速。本研究旨在探索AG的耐药机制,并开发能使AG方案增敏的策略。方法我们在研究中使用了类器官模型、患者衍生异种移植(PDX)和基因工程小鼠模型(GEMM)。为研究其机制,我们进行了染色质-免疫沉淀(Ch-IP)、双荧光素酶测定、共免疫沉淀(Co-IP)和远西印迹分析。结果通过多策略筛选,我们发现AVL9是PDAC中AG耐药的关键靶点。结果通过多策略筛选,我们发现AVL9是PDAC中AG耐药的关键靶点,其肿瘤促进作用在我们的临床队列中得到了证实。从机理上讲,缺氧相关转录因子 HIF-1α 驱动了 AVL9 的表达。AVL9 可作为支架促进 IκBα 与 SKP1 的结合,从而增强 IκBα 的泛素化和降解,进一步激活 NF-κB 通路。潜在的 AVL9 靶向抑制剂依度他林(Edotecarin)可逆转 PDAC 的 AG 化疗耐药性。AVL9、IκBα和SKP1的物理相互作用为NF-κB通路的异常激活提供了一种新的分子机制。因此,AVL9靶向药物依度他林可能是使PDAC对AG敏感的一种有前途的治疗策略。
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引用次数: 0
PDO-Based Drug Screening in Advanced Pancreatic Cancer: Addressing Predictive Value and Broader Clinical Implications 基于 PDO 的晚期胰腺癌药物筛选:探讨预测价值和更广泛的临床意义
IF 29.4 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2024-11-19 DOI: 10.1053/j.gastro.2024.10.045
Chaojie Liang, Dan Shan, Zhigang Wei
No Abstract
无摘要
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引用次数: 0
AGA Living Clinical Practice Guideline on Pharmacological Management of Moderate-to-Severe Ulcerative Colitis AGA 中度至重度溃疡性结肠炎药物治疗生活临床实践指南
IF 29.4 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2024-11-19 DOI: 10.1053/j.gastro.2024.10.001
Siddharth Singh, Edward V. Loftus, Berkeley N. Limketkai, John P. Haydek, Manasi Agrawal, Frank I. Scott, Ashwin N. Ananthakrishnan
<h3>Background & Aims</h3>This American Gastroenterological Association (AGA) living guideline is intended to support practitioners in the pharmacological management of moderate-to-severe ulcerative colitis (UC).<h3>Methods</h3>A multidisciplinary panel of content experts and guideline methodologists used the Grading of Recommendations Assessment, Development and Evaluation (GRADE) framework to prioritize clinical questions, identify patient-centered outcomes, conduct an evidence synthesis, and develop recommendations on the pharmacological management of moderate-to-severe UC.<h3>Results</h3>The AGA guideline panel made 14 recommendations. In adult outpatients with moderate-to-severe UC, the AGA recommends the use of infliximab, golimumab, vedolizumab, tofacitinib, upadacitinib, ustekinumab, ozanimod, etrasimod, risankizumab, and guselkumab, and suggests the use of adalimumab, filgotinib, and mirikizumab over no treatment. In patients who are naïve to advanced therapies, the AGA suggests using a higher-efficacy medication (eg, infliximab, vedolizumab, ozanimod, etrasimod, upadacitinib, risankizumab, and guselkumab) or an intermediate-efficacy medication (eg, golimumab, ustekinumab, tofacitinib, filgotinib, and mirikizumab) rather than a lower-efficacy medication (eg, adalimumab). In patients who have previously been exposed to 1 or more advanced therapies, particularly tumor necrosis factor (TNF)-α antagonists, the AGA suggests using a higher-efficacy medication (eg, tofacitinib, upadacitinib, and ustekinumab) or an intermediate-efficacy medication (eg, filgotinib, mirikizumab, risankizumab, and guselkumab) rather than a lower-efficacy medication (eg, adalimumab, vedolizumab, ozanimod, and etrasimod). In adult outpatients with moderate-to-severe UC, the AGA suggests against using thiopurine monotherapy for induction of remission, but suggests using thiopurine monotherapy over no treatment for maintenance of (typically corticosteroid-induced) remission. The AGA suggests against using methotrexate monotherapy, for induction or maintenance of remission. In adult outpatients with moderate-to-severe UC, the AGA suggests the use of infliximab, adalimumab, and golimumab in combination with an immunomodulator over corresponding monotherapy. However, the AGA makes no recommendation in favor of, or against, the use of non-TNF antagonist biologics in combination with an immunomodulator over non-TNF biologic alone. In patients with UC who are in corticosteroid-free clinical remission for at least 6 months on combination therapy of TNF antagonists and an immunomodulator, the AGA suggests against withdrawal of TNF antagonists, but makes no recommendation in favor of, or against, withdrawing immunomodulators. In adult outpatients with moderate-to-severe UC, who have failed 5-aminosalicylates, and have escalated to therapy with immunomodulators or advanced therapies, the AGA suggests stopping 5-aminosalicylates. Finally, in adult outpatients with moderate-se
背景& 目的本美国胃肠病学协会(AGA)生活指南旨在支持从业人员对中重度溃疡性结肠炎(UC)进行药物治疗。方法由内容专家和指南方法论专家组成的多学科小组采用建议评估、开发和评价分级(GRADE)框架对临床问题进行优先排序,确定以患者为中心的结果,进行证据综合,并就中重度溃疡性结肠炎的药物治疗提出建议。对于中重度UC成人门诊患者,AGA建议使用英夫利西单抗、戈利木单抗、维多利珠单抗、托法替尼、乌达替尼、乌斯特库单抗、奥扎尼莫德、依曲莫德、利桑珠单抗和古谢库单抗等药物,并建议使用阿达木单抗、非格替尼和米利珠单抗,而不是不进行治疗。对于初次接受先进疗法的患者,AGA建议使用疗效较高的药物(如英夫利昔单抗、维多利珠单抗、奥扎尼莫德、依曲莫德、达帕替尼、利桑珠单抗和古谢库单)或中等疗效的药物(如戈利木单抗、乌斯特库单抗、托法替尼、菲戈替尼和米利库单抗),而不是疗效较低的药物(如阿达木单抗)。对于既往接受过一种或多种晚期治疗,尤其是肿瘤坏死因子(TNF)-α拮抗剂治疗的患者,AGA建议使用疗效较高的药物(如托法替尼、达帕替尼和乌司替尼)、ustekinumab)或中等疗效药物(如filgotinib、mirikizumab、risankizumab和guselkumab),而不是疗效较低的药物(如阿达木单抗、vedolizumab、ozanimod和etrasimod)。对于中重度 UC 成人门诊患者,AGA 建议不要使用硫嘌呤单药诱导缓解,但建议在维持(通常是皮质类固醇诱导的)缓解时使用硫嘌呤单药而不使用任何治疗。AGA 建议不要将甲氨蝶呤单一疗法用于诱导或维持缓解。对于中重度 UC 成人门诊患者,AGA 建议使用英夫利昔单抗、阿达木单抗和戈利木单抗联合免疫调节剂,而不是相应的单药治疗。不过,对于非 TNF 拮抗剂生物制剂与免疫调节剂合用而非非 TNF 生物制剂单独使用,AGA 没有提出赞成或反对的建议。对于接受TNF拮抗剂和免疫调节剂联合治疗至少6个月且无皮质类固醇临床缓解的UC患者,AGA建议不要停用TNF拮抗剂,但不建议支持或反对停用免疫调节剂。对于中重度UC成人门诊患者,如果5-氨基水杨酸类药物治疗失败,并升级到使用免疫调节剂或先进疗法,AGA建议停用5-氨基水杨酸类药物。最后,对于中重度 UC 成人门诊患者,AGA 建议尽早使用先进疗法和/或免疫调节剂疗法,而不是在 5- 氨基水杨酸盐治疗失败后逐步升级。专家组还提出了优化使用这些药物的关键实施注意事项,并指出了一些知识缺口和未来研究领域。结论本指南为中重度 UC 患者的药物治疗提供了一种全面的、以患者为中心的方法。
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引用次数: 0
Expanding the Differential Diagnosis: Severe, Swollen Hepatocytes in a Patient with an ALT above 1000 U/L 扩大鉴别诊断:ALT 超过 1000 U/L、患者肝细胞严重肿胀
IF 29.4 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2024-11-16 DOI: 10.1053/j.gastro.2024.10.044
Michael Eller, Lindsey Westbrook, Avash Kalra
No Abstract
无摘要
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引用次数: 0
AGA Clinical Practice Update on Nonampullary Duodenal Lesions: Expert Review. AGA 非髓质十二指肠病变临床实践更新:专家评论。
IF 25.7 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2024-11-15 DOI: 10.1053/j.gastro.2024.10.008
Michael J Bourke, Simon K Lo, Ross C D Buerlein, Koushik K Das
<p><strong>Description: </strong>Nonampullary duodenal polyps are found in up to 5% of all upper endoscopies; the vast majority are identified incidentally in asymptomatic patients. Although most are benign, adenomas are estimated to account for 10%-20% of these lesions. Most international guidelines recommend that all duodenal adenomas should be considered for endoscopic resection; this may be associated with a near 15% adverse event rate (predominantly bleeding and perforation) in prospective studies, with substantial local recurrence on surveillance. The aim of this American Gastroenterological Association (AGA) Clinical Practice Update Expert Review was to describe how individuals should be evaluated and risk-stratified for duodenal polyps, the best approaches to endoscopic resection and surveillance, and management of complications, highlighting opportunities for future research to fill gaps in the existing literature.</p><p><strong>Methods: </strong>This expert review was commissioned and approved by the AGA Institute Clinical Practice Updates Committee and the AGA Governing Board to provide timely guidance on a topic of high clinical importance to the AGA membership, and underwent internal peer review by the Clinical Practice Updates Committee and external peer review through standard procedures of Gastroenterology. These Best Practice Advice statements were drawn from a review of the published literature and from expert opinion. Because systematic reviews were not performed, these Best Practice Advice statements do not carry formal ratings regarding the quality of evidence or strength of the presented considerations. Best Practice Advice Statements BEST PRACTICE ADVICE 1: Non-neoplastic duodenal lesions (eg, metaplastic foveolar epithelium and gastric heterotopia) may mimic neoplastic adenomatous pathology. Careful optical evaluation and pathologic correlation may be necessary to exclude dysplasia. Nondysplastic lesions do not require endoscopic resection unless they are symptomatic or bleeding. BEST PRACTICE ADVICE 2: Ideal duodenal endoscopic inspection includes identification of the major and minor papilla with photodocumentation to ensure no involvement by the lesion. Adding a clear distal attachment device to a forward-viewing gastroscope improves visualization of the papilla and the medial wall. A side-viewing duodenoscope should be used when the major and minor papilla are not visible with the gastroscope and for most lesions on the medial wall of the duodenum within 5 cm of the ampulla. BEST PRACTICE ADVICE 3: All duodenal polyps should be described according to their size, Paris morphology, suspected histologic layer of origin (mucosal lesion or subepithelial lesion), duodenal location (D1-4) and orientation (anterior, posterior, medial, or lateral wall), and proximity/relationship to the major papilla to facilitate therapeutic planning and subsequent surveillance. BEST PRACTICE ADVICE 4: Given the high frequency of concomitant c
最佳实践建议 11:评估息肉切除术/内镜粘膜切除术后的缺损对于确定术后十二指肠穿孔问题至关重要,如果不加以识别和治疗,可能会危及生命,通常必须进行手术。最佳实践建议 12:应每隔 6 个月对完全切除的十二指肠腺瘤进行首次内镜监测。虽然复发的腺瘤通常较小,但通常会留下疤痕,无法采用传统的钳形切除术,可能需要采用撕脱术才能治愈。最佳实践建议 13:家族性腺瘤性息肉病相关的非髓质十二指肠腺瘤应根据大小(≥1 厘米)、形态特征、晚期组织学(即高级别发育不良)和/或根据 Spiegelman 标准考虑进行内镜下切除。
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引用次数: 0
High serum pesticide levels are associated with increased odds of inflammatory bowel disease in a nested case-control study 在一项巢式病例对照研究中,高血清杀虫剂水平与炎症性肠病发病几率增加有关
IF 29.4 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2024-11-14 DOI: 10.1053/j.gastro.2024.10.041
Manasi Agrawal, Ryan C. Ungaro, Palak Rajauria, Jared Magee, Lauren Petrick, Vishal Midya
No Abstract
无摘要
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引用次数: 0
AGA Clinical Practice Update on Endoscopic Enteral Access: Commentary AGA 内镜肠道入路临床实践更新:评论
IF 29.4 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2024-11-14 DOI: 10.1053/j.gastro.2024.09.043
Dejan Micic, John A. Martin, John Fang

Description

The purpose of this American Gastroenterological Association (AGA) Clinical Practice Update is to facilitate understanding and improve the clinical practice of endoscopic enteral access.

Methods

This expert commentary was commissioned and approved by the AGA Institute Clinical Practice Updates Committee and the AGA Governing Board to provide timely guidance on a topic of high clinical importance to the AGA membership, and underwent internal peer review by the Clinical Practice Updates Committee and external peer review through standard procedures of Gastroenterology.
方法本专家评论由美国胃肠病学会临床实践更新委员会和美国胃肠病学会理事会委托并批准,目的是就对美国胃肠病学会会员具有高度临床重要性的主题提供及时指导,并经过临床实践更新委员会的内部同行评审和《胃肠病学》标准程序的外部同行评审。
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引用次数: 0
Exploring the Potential of Real-Time Audio-Visual Interactions of ChatGPT-4o in Endoscopy Training and Practice 探索 ChatGPT-4o 的实时视听互动在内窥镜培训和实践中的潜力
IF 29.4 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2024-11-13 DOI: 10.1053/j.gastro.2024.06.042
Qiqi Wu
No Abstract
无摘要
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引用次数: 0
Sucrase isomaltase dysfunction reduces sucrose intake in mice and humans 蔗糖异麦芽糖酶功能障碍会降低小鼠和人类的蔗糖摄入量
IF 29.4 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2024-11-13 DOI: 10.1053/j.gastro.2024.10.040
Peter Aldiss, Leire Torices, Stina Ramne, Marit Eika Jørgensen, Mauro D’Amato, Mette K. Andersen
No Abstract
无摘要
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引用次数: 0
期刊
Gastroenterology
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