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For Optimal HIV Viral Load Reduction, Increase Intake of Gut Microbe-Friendly Foods: Comment on Palar et al. 为了获得最佳的HIV病毒载量减少,增加肠道微生物友好食品的摄入:对Palar等人的评论。
Pub Date : 2025-12-20 DOI: 10.1093/infdis/jiaf383
William J McCarthy,Frederick Ferguson,Lillian Gelberg
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引用次数: 0
Why Americans are Dying Younger? NIH Is Not the Problem. Our Broken Healthcare Delivery Is. 为什么美国人死得更早?国家卫生研究院不是问题所在。我们支离破碎的医疗服务
Pub Date : 2025-12-20 DOI: 10.1093/infdis/jiaf592
Rachel Bender Ignacio,Jade Pagkas-Bather,Gregg Gonsalves,Sara Gianella
The United States leads the world in biomedical innovation, with NIH-funded research driving transformative advances in cancer, HIV, and gene therapy. Yet, these breakthroughs cannot achieve their full impact in a fragmented and inequitable health system. Millions remain uninsured, preventive care is undervalued, and social determinants perpetuate life expectancy gaps. Political efforts to restrict or defund the NIH threaten progress and disproportionately harm underserved populations. Biomedical research alone cannot fix systemic failures but strengthening science while repairing care delivery systems is essential to improving population health and ensuring that innovations benefit all.
美国在生物医学创新方面处于世界领先地位,美国国立卫生研究院资助的研究推动了癌症、艾滋病毒和基因治疗方面的变革性进展。然而,这些突破无法在一个分散和不公平的卫生系统中充分发挥作用。数百万人仍然没有保险,预防性保健被低估,社会决定因素使预期寿命差距持续存在。限制或撤资的政治努力威胁着国家卫生研究院的进步,不成比例地伤害着得不到服务的人群。生物医学研究本身不能解决系统故障,但在修复医疗服务系统的同时加强科学对于改善人口健康和确保创新使所有人受益至关重要。
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引用次数: 0
TRAF1 Inhibits Macrophage Killing of Sporothrix schenckii by Enhancing NOS2 Expression and Activity TRAF1通过增强NOS2的表达和活性抑制巨噬细胞对申氏孢子菌的杀伤作用
Pub Date : 2025-12-19 DOI: 10.1093/infdis/jiaf646
Congcong He, Ruiqun Qi, Yuxiao Hong, Xinghua Gao
Background Sporotrichosis is a chronic, deep fungal infection of skin caused by S.schenckii. Macrophages are predominant in S.schenckii infected skin and able to phagocytize and kill the fungus. Local hyperthermia is effective to treat sporotrichosis, however, its mechanism of action remains not fully understood. Methods Using single-cell RNA sequencing of sporotrichosis lesions, coupled with in vitro and in vivo sporotrichosis models, we investigated the role of TRAF1 and NOS2. Mechanistic studies included co-immunoprecipitation, ubiquitination assays, and site-directed mutagenesis. Therapeutic mechanism of hyperthermia were evaluated in vivo and in vitro. Results We demonstrated for the first time that TRAF1 could delay the healing of sporotrichosis by inhibiting phagocytosis and killing of macrophages to S.schenckii. This effect of TRAF1 is caused by binding NOS2 to regulate its expression and enzymatic activity, through inhibition of NOS2 ubiquitination and subsequent proteasome-induced degradation. Our team's previous research has demonstrated the efficacy of hyperthermia in treating sporotrichosis. Our experiments indicate that hyperthermia can downregulate the expression of TRAF1 and NOS2 in macrophages. Conclusions We identify TRAF1-mediated stabilization of NOS2 as a key immune evasion mechanism in S. schenckii infection. Local hyperthermia represents a targeted therapy against this pathway, offering a novel strategy for enhancing the therapeutic effect of hyperthermia.
背景:孢子菌病是一种由申克氏s.s schenckii引起的慢性皮肤深部真菌感染。巨噬细胞在申氏沙门氏菌感染的皮肤中占主导地位,能够吞噬和杀死真菌。局部热疗治疗孢子虫病是有效的,但其作用机制尚不完全清楚。方法利用孢子菌病病变单细胞RNA测序,结合体内和体外孢子菌病模型,研究TRAF1和NOS2的作用。机制研究包括共免疫沉淀、泛素化测定和定点诱变。在体内和体外评价热疗的治疗机制。结果首次证实TRAF1可通过抑制申氏梭菌对巨噬细胞的吞噬和杀伤来延缓孢子菌病的愈合。TRAF1的这种作用是通过抑制NOS2泛素化和随后的蛋白酶体诱导降解,结合NOS2来调节其表达和酶活性而引起的。我们团队之前的研究已经证明了热疗治疗孢子虫病的有效性。我们的实验表明,热疗可以下调巨噬细胞中TRAF1和NOS2的表达。结论:我们发现traf1介导的NOS2稳定是申克氏菌感染的关键免疫逃避机制。局部热疗是针对这一途径的一种靶向治疗方法,为增强热疗的治疗效果提供了一种新的策略。
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引用次数: 0
Reply To Gianella: Redefining Science Together. Gianella:一起重新定义科学。
Pub Date : 2025-12-19 DOI: 10.1093/infdis/jiaf644
Rachel Bender Ignacio
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引用次数: 0
Editor's Note: Oral Ivermectin in the Treatment of Body Lice. 编者注:口服伊维菌素治疗体虱。
Pub Date : 2025-12-18 DOI: 10.1093/infdis/jiaf627
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引用次数: 0
Efficacies of sequenced monotherapies of Mycobacterium avium lung infection in mouse 单药治疗小鼠鸟分枝杆菌肺部感染的疗效观察
Pub Date : 2025-12-18 DOI: 10.1093/infdis/jiaf640
Ruth A Howe, Binayak Rimal, Jay Khandelwal, Chandra Panthi, Gyanu Lamichhane
Background The incidence of non-tuberculous mycobacterial (NTM) infections has been rising and now exceeds tuberculosis in several countries. Mycobacterium avium is the most common NTM cause of chronic lung disease. Current guidelines recommend simultaneous administration of three or more antibiotics, modeled after tuberculosis treatment, but these regimens are limited by toxicity, poor adherence, and low cure rates. Importantly, unlike M. tuberculosis, M. avium is acquired from the environment rather than transmitted between humans, weakening the rationale for multidrug therapy as necessary to suppress resistance. Methods To test an alternative treatment approach, we evaluated sequential monotherapy in a validated murine model of chronic M. avium lung infection. Mice were treated with either the standard triple-drug regimen of clarithromycin, ethambutol, and rifampicin or with sequential monotherapy: clarithromycin, bedaquiline, and clofazimine, with only one drug administered at a time for four-week intervals. Lung and spleen bacterial burdens were quantified, and minimum inhibitory concentrations (MICs) were determined for isolates recovered during treatment to assess resistance emergence. Results Sequential monotherapy achieved reductions in lung bacterial burden equivalent to those of the standard multidrug regimen and prevented extrapulmonary dissemination. Notably, no increase in MICs was observed for clarithromycin, bedaquiline, or clofazimine across treatment phases, indicating that sequential monotherapy did not select for resistant clones. Conclusions These findings provide the first evidence that sequential monotherapy can deliver efficacy comparable to multidrug therapy for M. avium disease without promoting resistance. This proof-of-concept supports further investigation of sequencing strategies as a potentially more tolerable alternative to current triple-agent regimens.
在一些国家,非结核分枝杆菌(NTM)感染的发病率一直在上升,目前已超过结核病。鸟分枝杆菌是慢性肺部疾病最常见的NTM病因。目前的指南建议按照结核病治疗的模式,同时使用三种或三种以上的抗生素,但这些方案受到毒性、依从性差和治愈率低的限制。重要的是,与结核分枝杆菌不同,鸟分枝杆菌是从环境中获得的,而不是在人与人之间传播,这削弱了多药治疗抑制耐药性的必要性。方法为了测试一种替代治疗方法,我们在一个有效的小鼠慢性鸟分枝杆菌肺部感染模型中评估了序贯单药治疗。小鼠接受克拉霉素、乙胺丁醇和利福平的标准三联药物治疗,或接受顺序单药治疗:克拉霉素、贝达喹啉和氯法齐明,每次只服用一种药物,间隔四周。量化肺和脾脏细菌负荷,并测定治疗期间恢复的分离株的最低抑制浓度(mic),以评估耐药性的出现。结果序贯单药治疗达到了与标准多药治疗相当的肺细菌负担的减少,并防止了肺外传播。值得注意的是,克拉霉素、贝达喹啉或氯法齐明在整个治疗阶段未观察到mic的增加,这表明序贯单药治疗没有选择耐药克隆。结论这些发现首次证明序贯单药治疗在不促进耐药的情况下可提供与多药治疗相当的疗效。这一概念验证支持进一步研究测序策略,作为目前三药方案的潜在更耐受的替代方案。
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引用次数: 0
Stunting Increases Influenza Virus Shedding Duration in Preschool/School-Aged Children. 发育迟缓会增加学龄前/学龄儿童流感病毒脱落的时间。
Pub Date : 2025-12-18 DOI: 10.1093/infdis/jiaf641
Mia Q Zhu,Guillermina Kuan,Hannah E Maier,Roger Lopez,Abigail Shotwell,Miguel Plazaola,Sergio Ojeda,Nery Sanchez,Angel Balmaseda,Aubree Gordon
The role of under-nutrition on influenza virus shedding is unclear. We assessed stunting, an indicator of chronic under-nutrition, as a predictor of shedding duration in children in the Household Influenza Cohort Study, in Managua, Nicaragua. Stunted children, aged 3-9 years, shed influenza longer than their non-stunted peers. In sub-group analysis, associations were driven by H3N2 and influenza B (IB) infections. Analysis of cycle threshold (Ct) values showed slower clearance of IB viruses in stunted children. These findings suggest under-nutrition may prolong influenza shedding, with implications for transmission dynamics and control strategies in low- and middle-income countries where stunting remains prevalent.
营养不良在流感病毒传播中的作用尚不清楚。在尼加拉瓜马那瓜的家庭流感队列研究中,我们评估了发育迟缓(慢性营养不良的一个指标)作为儿童脱落持续时间的预测因子。发育迟缓的3-9岁儿童比非发育迟缓的同龄人患流感的时间更长。在亚组分析中,H3N2和乙型流感(IB)感染驱动了相关性。循环阈值(Ct)分析显示,发育迟缓儿童的IB病毒清除速度较慢。这些发现表明,营养不良可能会延长流感的传播时间,这对发育迟缓仍然普遍存在的中低收入国家的传播动态和控制策略具有影响。
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引用次数: 0
The Pandemic REspiratory Virus Epidemiological SurveillaNce Trial - A self-swab surveillance system for respiratory viruses nested within FluTracking. 大流行性呼吸道病毒流行病学监测试验- FluTracking中嵌套的呼吸道病毒的自拭子监测系统。
Pub Date : 2025-12-18 DOI: 10.1093/infdis/jiaf632
Camille Esneau,David Boettiger,Sarah Leask,Nathan E Bryant,Natalie Niessen,Jodie McVernon,Adrian Marcato,Sandra Carlson,Stuart Browne,Rejoy Thomas,Edward C Holmes,Krispin Hajkowicz,Lynelle Tilbrook,Nathan Moon,Craig Dalton,Nathan W Bartlett,Joshua S Davis
BACKGROUNDThe COVID-19 pandemic has underscored the importance of effective surveillance and early warning systems for respiratory viruses, but most current surveillance data focus on symptomatic individuals visiting healthcare facilities. Symptomatic and asymptomatic virus transmission in the community can both play major roles in the spread of respiratory outbreaks. We aimed to assess the feasibility of monitoring symptomatic and asymptomatic respiratory virus infection in a sample of community dwelling volunteers.METHODSThe Pandemic REspiratory Virus Epidemiological SurveillaNce Trial (PREVENT) was nested within the ongoing FluTracking platform, which involves community-dwelling adults filling in a weekly online respiratory symptom survey. We recruited 52 FluTracking participants living in one Australian city to self-collect weekly nasal swabs and return them via post for a 50-week period. All swabs were tested for the presence of respiratory viruses using a 16-plex PCR panel. Results were correlated with weekly symptom surveys.RESULTSA total of 2,068 nasal swabs were received, corresponding to an 84% swab collection and return rate. 55 samples (3.0%) were discarded due to delayed postage or sample leakage. At least one sample tested positive for virus in 231 of 2,013 participant-weeks (11.0%), with 24.2% of these detections being in asymptomatic individuals. Rhinovirus (57.6% of positive swabs) and SARS-COV-2 (20.3% of positive swabs) were the most frequently detected viruses.CONCLUSIONRegular self-collected nasal swabs for detecting respiratory viruses in a community setting is feasible in Australia and provides valuable information on asymptomatic infection.
背景2019冠状病毒病大流行凸显了建立有效的呼吸道病毒监测和预警系统的重要性,但目前大多数监测数据侧重于就诊的有症状个体。社区中有症状和无症状的病毒传播都是呼吸道疫情传播的主要因素。我们的目的是评估在社区居住志愿者样本中监测有症状和无症状呼吸道病毒感染的可行性。方法大流行性呼吸道病毒流行病学监测试验(prevention)嵌套在正在进行的FluTracking平台中,该试验涉及社区居住的成年人填写每周在线呼吸道症状调查。我们招募了52名住在澳大利亚一个城市的FluTracking参与者,让他们每周自行收集鼻拭子,并在50周内通过邮寄的方式归还。所有拭子均使用16-plex PCR检测呼吸道病毒的存在。结果与每周症状调查相关。结果共收到鼻腔拭子2068份,拭子收集率和回收率为84%。55个样品(3.0%)因邮资延迟或样品泄漏而被丢弃。在2013个参与者周中,有231个样本至少有一个病毒检测呈阳性(11.0%),其中24.2%的检测结果出现在无症状个体中。鼻病毒(57.6%的阳性拭子)和SARS-COV-2(20.3%的阳性拭子)是最常见的病毒。结论在澳大利亚,在社区环境中定期自行采集鼻拭子检测呼吸道病毒是可行的,并为无症状感染提供了有价值的信息。
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引用次数: 0
Microbiota, Mucus, and Modulators: CF Infection Pathogenesis in the CFTR Modulator Era. 微生物群、粘液和调节剂:CFTR调节剂时代的CF感染发病机制。
Pub Date : 2025-12-17 DOI: 10.1093/infdis/jiaf626
Christina S Thornton,Drake C Bouzek,Lindsay J Caverly
Cystic fibrosis (CF) lung disease is a result of defective CFTR-mediated ion transport, producing dehydrated mucus, impaired mucociliary clearance and an opportune environment for chronic airway infection. CF airway infections are polymicrobial airway ecosystems often dominated by CF pathogens such as Pseudomonas aeruginosa, Staphylococcus aureus, Burkholderia, Stenotrophomonas, Achromobacter, and nontuberculous mycobacteria that drive cycles of infection, inflammation, and bronchiectasis. Highly effective CFTR modulators, including elexacaftor/tezacaftor/ivacaftor, improve airway hydration and mucociliary clearance and reduce pathogen CF acquisition and density. However, even with CFTR modulator treatment, most individuals with established infection remain chronically infected, and long-term impacts of CFTR modulators on airway infection dynamics and associated clinical outcomes remain unclear. In this review, we address key gaps in understanding chronic infection in the CFTR modulator era, including changes in infection-related lung disease pathogenesis, airway-gut microbiome interactions, approaches to airway infection sampling, and implications for infection management.
囊性纤维化(CF)肺部疾病是cftr介导的离子运输缺陷的结果,产生脱水粘液,粘膜纤毛清除受损,并为慢性气道感染提供了适宜的环境。CF气道感染是多微生物气道生态系统,通常由CF病原体主导,如铜绿假单胞菌、金黄色葡萄球菌、伯克霍尔德菌、窄养单胞菌、无色杆菌和非结核分枝杆菌,它们驱动感染、炎症和支气管扩张的循环。高效CFTR调节剂,包括elexaftor /tezacaftor/ivacaftor,可改善气道水化和纤毛粘膜清除,减少病原体CF获取和密度。然而,即使使用CFTR调节剂治疗,大多数已确诊感染的个体仍处于慢性感染状态,CFTR调节剂对气道感染动力学和相关临床结果的长期影响尚不清楚。在这篇综述中,我们解决了理解CFTR调节剂时代慢性感染的关键空白,包括感染相关肺部疾病发病机制的变化、气道-肠道微生物组的相互作用、气道感染采样的方法以及感染管理的意义。
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引用次数: 0
Higher promoter methylation of the Ubiquitin Associated and SH3 domain containing A ( UBASH3A ) gene is associated with T-lymphocyte ontogeny and reduced susceptibility to early-onset sepsis 泛素相关基因和含有A的SH3结构域(UBASH3A)基因的高启动子甲基化与t淋巴细胞个体发生和降低早发性脓毒症的易感相关
Pub Date : 2025-12-16 DOI: 10.1093/infdis/jiaf636
Ziyi Wang, Nelly Amenyogbe, Rym Ben-Othman, Bing Cai, Mandy Lo, Olubukola T Idoko, Oludare A Odumade, Reza Falsafi, Travis M Blimkie, Andy An, Casey P Shannon, Sebastiano Montante, Bhavjinder K Dhillon, Joann Diray-Arce, Al Ozonoff, Kinga K Smolen, Ryan R Brinkman, Kerry McEnaney, Asimenia Angelidou, Peter Richmond, Scott J Tebbutt, Beate Kampmann, Robert E W Hancock, Amy H Y Lee, Ofer Levy, Tobias R Kollmann, David Martino
We investigated the genetic and epigenetic regulation of the UBASH3A gene and its association with early-onset sepsis. Using matched whole blood DNA methylation, gene expression, genotypes and immune cell counts from the EPIC-HIPC newborn cohort, we report promoter methylation was negatively correlated (Pearson's r = -0.5, p < 2.2×10-16) with ontogenetic changes in UBASH3A gene expression and circulating CD3+ T-cell numbers. Higher promoter methylation at birth was associated with lower UBASH3A expression and reduced early onset sepsis risk (OR = 0.26, p = 0.015). Genetic variation significantly influenced variations in baseline UBASH3A methylation (132 cis-meQTL, FDR < 0.05).
我们研究了UBASH3A基因的遗传和表观遗传调控及其与早发性脓毒症的关系。通过对EPIC-HIPC新生儿队列的匹配全血DNA甲基化、基因表达、基因型和免疫细胞计数,我们报告启动子甲基化与UBASH3A基因表达和循环CD3+ t细胞数量的个体发生变化呈负相关(Pearson's r = -0.5, p < 2.2×10-16)。出生时较高的启动子甲基化与较低的UBASH3A表达和较低的早期脓毒症风险相关(OR = 0.26, p = 0.015)。遗传变异显著影响基线UBASH3A甲基化的变化(132顺式- meqtl, FDR < 0.05)。
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引用次数: 0
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The Journal of Infectious Diseases
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