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Neuroinflammation and insulin resistance in major depression and bipolar disorder: Implications for clinical trials evaluating immunometabolic targeted therapies 重度抑郁症和双相情感障碍的神经炎症和胰岛素抵抗:评估免疫代谢靶向治疗的临床试验意义
IF 3.5 Q2 IMMUNOLOGY Pub Date : 2026-02-01 Epub Date: 2025-12-22 DOI: 10.1016/j.bbih.2025.101166
Folkert H. van Bruggen , Roger S. McIntyre
Bipolar disorder (BD) and major depressive disorder (MDD) are highly prevalent, disabling psychiatric illnesses marked by substantial heterogeneity and frequent metabolic and inflammatory comorbidities. Growing evidence implicates low-grade inflammation, immune dysregulation, and insulin resistance (IR) in the pathophysiology, progression, and treatment response of mood disorders. While numerous clinical trials have investigated immunometabolic targeted interventions, outcomes have been inconsistent, due to limited stratification of participants based on underlying biology. This perspective paper aims to identify practical biomarkers and biosignatures to guide patient selection and optimize immunometabolic trial design. We summarize evidence linking neuroinflammation and IR to illness burden, discuss clinical trials targeting these mechanisms, and highlight emerging markers, including extracellular vesicles, monocyte gene expression profiles, and neuron-derived vesicle signatures of IR. No single validated biomarker for identification of immunometabolic phenotype currently exists, but multimodal biosignatures combining genetic, epigenetic, proteomic, and clinical features offer a pragmatic empirical path forward. Integrating these markers with advanced analytic approaches, such as machine learning, holds promise for identifying biologically coherent subgroups most likely to benefit from targeted immunometabolic interventions, accelerating precision medicine for BD and MDD.
双相情感障碍(BD)和重度抑郁障碍(MDD)是非常普遍的致残性精神疾病,其特征是实质性的异质性和频繁的代谢和炎症合并症。越来越多的证据表明,低级别炎症、免疫失调和胰岛素抵抗(IR)在情绪障碍的病理生理、进展和治疗反应中起着重要作用。虽然许多临床试验已经研究了免疫代谢靶向干预措施,但由于基于潜在生物学的参与者分层有限,结果不一致。本文旨在识别实用的生物标志物和生物标记,以指导患者选择和优化免疫代谢试验设计。我们总结了将神经炎症和IR与疾病负担联系起来的证据,讨论了针对这些机制的临床试验,并强调了新兴的标志物,包括细胞外囊泡、单核细胞基因表达谱和IR的神经元源性囊泡特征。目前还没有一种有效的生物标志物用于识别免疫代谢表型,但结合遗传、表观遗传、蛋白质组学和临床特征的多模态生物特征提供了一条实用的经验途径。将这些标记与先进的分析方法(如机器学习)相结合,有望识别最有可能从靶向免疫代谢干预中受益的生物学上一致的亚群,从而加速双相障碍和重度抑郁症的精准医学治疗。
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引用次数: 0
Perceived stress precedes declines in Well-being: A prospective study of stress, well-being, hair cortisol, and low-grade inflammation in hospital employees 感知压力先于幸福感的下降:一项关于医院员工压力、幸福感、毛发皮质醇和低度炎症的前瞻性研究
IF 3.5 Q2 IMMUNOLOGY Pub Date : 2026-02-01 Epub Date: 2025-12-11 DOI: 10.1016/j.bbih.2025.101158
Monica T. Jones , Rachael A. Cronin , Mathew D. Marques , Matthias Weigl , Nicolas Rohleder , Linda Becker , Helena C. Kaltenegger , Bradley J. Wright

Objective

Chronic low-grade inflammation may help explain the relationship between stress, well-being, and disease, but the pathway and temporal order have not yet been tested prospectively. To understand the pathways between perceived stress, well-being, C-reactive protein, and hair cortisol, we investigated the temporal ordering of these variables in a sample of hospital employees.

Methods

Random-intercepts cross-lagged panel models were conducted using three 6-monthly waves of data collected from new employees at a German hospital (N = 296, 77.7 % female, M age = 28.59) in a prospective cohort study. Self-reported data on perceived stress and well-being, hair strands for hair cortisol concentration, and capillary blood samples for C-reactive protein were collected for analysis.

Results

While our study did not support a causal relationship between changes in stress levels and later changes in either hair cortisol or low-grade inflammation, we provide evidence to suggest that increases in perceived stress led to later decreases in well-being. In contrast, changes in well-being did not predict changes in perceived stress levels.

Conclusion

This is the first prospective repeated-measure study to examine the temporal associations between stress, well-being, hair cortisol concentrations, and chronic low-grade inflammation. Our analyses suggest that perceived stress in this sample precedes changes in well-being, highlighting the importance of prevention and early intervention.
目的慢性低度炎症可能有助于解释压力、健康和疾病之间的关系,但其途径和时间顺序尚未得到前瞻性的检验。为了了解感知压力、幸福感、c反应蛋白和毛发皮质醇之间的关系,我们在医院员工样本中调查了这些变量的时间顺序。方法采用随机截距交叉滞后面板模型,采用前瞻性队列研究,收集德国某医院新员工(N = 296, 77.7%为女性,年龄28.59岁)的3个6个月数据波。收集自我报告的感知压力和幸福感数据、头发皮质醇浓度和毛细管血液c反应蛋白样本进行分析。虽然我们的研究不支持压力水平的变化与后来毛发皮质醇或低度炎症的变化之间的因果关系,但我们提供的证据表明,感知压力的增加导致后来幸福感的下降。相比之下,幸福感的变化并不能预测感知压力水平的变化。结论:这是第一项前瞻性重复测量研究,旨在研究压力、幸福感、毛发皮质醇浓度和慢性低度炎症之间的时间相关性。我们的分析表明,在这个样本中,感知到的压力先于幸福感的变化,强调了预防和早期干预的重要性。
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引用次数: 0
Body talk: Correlates of gut-immune dysregulation phenotypes in people living with HIV who use methamphetamine 身体谈话:使用甲基苯丙胺的艾滋病毒感染者肠道免疫失调表型的相关关系
IF 3.5 Q2 IMMUNOLOGY Pub Date : 2026-02-01 Epub Date: 2025-12-01 DOI: 10.1016/j.bbih.2025.101156
Wilson Vincent , Annesa Flentje , Benjamin S. Dominguez , Robert H. Paul , Savita Pahwa , Suresh Pallikkuth , Margaret Roach , Dietmar Fuchs , Samantha E. Dilworth , Torsten B. Neilands , Peter W. Hunt , Gowri Sunder , Cody Lentz , Sydney Telaak , Adam W. Carrico

Background

Microbial translocation, immune activation, inflammation, and dysregulated metabolism of neurotransmitter precursors are interacting pathophysiologic processes linked to neuropsychiatric comorbidities and faster HIV disease progression. We examined correlates of distinct phenotypes of gut-immune dysregulation in people living with HIV (PWH) who use methamphetamine.

Methods

Participants were 122 PWH who had biochemically confirmed recent methamphetamine use, including non-injection use. Peripheral plasma markers reflected: intestinal permeability, microbial translocation, immune activation, inflammation, and dysregulated metabolism of neurotransmitter precursors. Using latent profile analysis (i.e., clustering) of these markers, we identified gut-immune phenotypes and their clinical, demographic, and stigma-related correlates.

Results

Three immune profiles emerged: (1) low gut-immune dysregulation with lower microbial translocation, macrophage activation, inflammation, and tryptophan catabolism; (2) moderate gut-immune dysregulation with all markers within average range; and (3) high gut-immune dysregulation with higher microbial translocation, immune activation, inflammation, and tryptophan catabolism. In adjusted analyses, higher viral load (one log10 copy/ml; AOR = 1.97, 95 % CI = 1.02–3.82), injection of methamphetamine (AOR = 3.60, 95 % CI = 1.23–10.50), and internalized stigma (AOR = 1.78, 95 % CI = 1.01–3.15) were associated with having a moderate gut-immune dysregulation profile. Additionally, higher viral load (AOR = 2.98, 95 % CI = 1.53–5.24) and injecting methamphetamine (AOR = 5.45, 95 % CI = 1.34–17.78) were associated with having a high gut-immune dysregulation profile.

Conclusions

Distinct patterns of microbial translocation, immune activation, inflammation, and metabolism of amino acid precursors distinguished gut-immune phenotypes of PWH reporting injection methamphetamine use and greater internalized stigma. Interventions tailored to PWH who inject methamphetamine or struggle with internalized stigma could optimize HIV-related health outcomes.
微生物易位、免疫激活、炎症和神经递质前体代谢失调是与神经精神合并症和更快的HIV疾病进展相关的相互作用的病理生理过程。我们研究了使用甲基苯丙胺的HIV感染者(PWH)肠道免疫失调的不同表型的相关性。方法研究对象为122名生物化学证实近期使用甲基苯丙胺(包括非注射使用)的PWH。外周血浆标志物反映:肠道通透性、微生物易位、免疫激活、炎症和神经递质前体代谢失调。利用这些标记物的潜在特征分析(即聚类),我们确定了肠道免疫表型及其临床、人口统计学和耻感相关因素。结果出现了三种免疫特征:(1)低肠道免疫失调,微生物易位、巨噬细胞激活、炎症和色氨酸分解代谢降低;(2)中度肠道免疫失调,各项指标均在平均范围内;(3)肠道免疫高度失调,微生物易位、免疫激活、炎症和色氨酸分解代谢增加。在校正分析中,较高的病毒载量(1 log10拷贝/ml; AOR = 1.97, 95% CI = 1.02-3.82)、注射甲基苯丙胺(AOR = 3.60, 95% CI = 1.23-10.50)和内化病耻感(AOR = 1.78, 95% CI = 1.01-3.15)与中度肠道免疫失调相关。此外,较高的病毒载量(AOR = 2.98, 95% CI = 1.53-5.24)和注射甲基苯丙胺(AOR = 5.45, 95% CI = 1.34-17.78)与较高的肠道免疫失调相关。结论不同的微生物易位、免疫激活、炎症和氨基酸前体代谢模式区分了PWH报告注射甲基苯丙胺的肠道免疫表型和更大的内化耻感。针对注射甲基苯丙胺或与内在耻辱作斗争的PWH量身定制的干预措施可以优化与艾滋病毒相关的健康结果。
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引用次数: 0
Levels of matrix metalloproteinase 9 (MMP-9) are elevated in persons with major depressive disorder who have had a recent suicide attempt 基质金属蛋白酶9 (MMP-9)水平在最近有自杀企图的重度抑郁症患者中升高
IF 3.5 Q2 IMMUNOLOGY Pub Date : 2026-02-01 Epub Date: 2025-12-18 DOI: 10.1016/j.bbih.2025.101163
Faith Dickerson , Emily Katsafanas , Andrea Origoni , Kelly Rowe , Sabahat Khan , Fahad Mukhtar , Shuojja Yang , Victor W. Splan , Robert Yolken
Matrix metalloproteinases (MMPs) are a diverse set of enzymes associated with tissue remodeling as well as inflammation and tissue destruction. MMP-9 is of interest since it has been associated with psychiatric disorders including major depressive disorder (MDD). Suicide attempts are a major complication of MDD. However, the association between MMP-9 levels and suicide attempts has not been extensively studied in persons with MDD. Sensitive enzyme immunoassays were employed to measure the levels of MMP-9 in blood samples from 186 persons with MDD receiving hospital care, 92 with a suicide attempt within the previous 30 days and 94 without a recent attempt, as well as 79 persons without a psychiatric disorder. Lifetime suicide attempt history in the MDD group was also recorded. Mixed effects models were employed to compare the MMP-9 levels among the groups adjusted for demographic and clinical variables. Wald tests were used to calculate pairwise comparisons. Employing these models, we found that individuals with MDD and a recent suicide attempt had higher levels of MMP-9 than individuals with MDD without a recent suicide attempt as well as individuals without a psychiatric disorder. There was not a significant difference in MMP-9 levels between the non-psychiatric group and individuals with MDD without a recent suicide attempt, regardless of whether they had a lifetime suicide attempt. Therapeutic modalities to modulate MMP-9 activity are currently being developed. The measurement of MMP-9 might be used to inform future clinical trials of these modalities for the prevention of suicide behaviors in high-risk individuals.
基质金属蛋白酶(MMPs)是一组与组织重塑、炎症和组织破坏相关的多种酶。MMP-9之所以引起人们的兴趣,是因为它与包括重度抑郁症(MDD)在内的精神疾病有关。自杀企图是重度抑郁症的一个主要并发症。然而,MMP-9水平与自杀企图之间的关系尚未在重度抑郁症患者中得到广泛研究。采用敏感的酶免疫测定法测量186名接受医院治疗的重度抑郁症患者、92名在过去30天内有自杀企图的患者、94名最近没有自杀企图的患者以及79名没有精神障碍的患者的血液样本中MMP-9的水平。重度抑郁症组的终生自杀企图史也被记录下来。采用混合效应模型比较经人口统计学和临床变量调整的各组间MMP-9水平。采用Wald检验计算两两比较。采用这些模型,我们发现患有重度抑郁症且最近有自杀企图的个体比患有重度抑郁症且最近没有自杀企图的个体以及没有精神疾病的个体具有更高的MMP-9水平。在非精神病组和最近没有自杀企图的重度抑郁症患者之间,MMP-9水平没有显著差异,无论他们是否有终身自杀企图。目前正在开发调节MMP-9活性的治疗方式。MMP-9的测量可能会为未来的临床试验提供信息,以预防高危人群的自杀行为。
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引用次数: 0
Therapeutic nanoliposome vaccine targeting multiple Aβ and tau epitopes reduces AD-like brain pathologies and rescues cognitive deficits in 3xTg-AD mice 靶向多个Aβ和tau表位的治疗性纳米脂质体疫苗可减少3xTg-AD小鼠的ad样脑病理并挽救认知缺陷
IF 3.5 Q2 IMMUNOLOGY Pub Date : 2026-02-01 Epub Date: 2025-12-30 DOI: 10.1016/j.bbih.2025.101167
Chun-Ling Dai , Yiting Song , Yonghua Chen , Yunn Chyn Tung , Wei-Chiao Huang , Cheng-Xin Gong , Jonathan F. Lovell
Amyloid beta (Aβ) plaques and hyperphosphorylated tau neurofibrillary tangles (NFTs) are the histopathological hallmarks of Alzheimer's disease (AD) and targets for AD therapeutics. Since Aβ and tau pathologies both drive AD pathogenesis and progression, immunotherapies singularly targeting either Aβ or tau may be limited, and simultaneously targeting multiple epitopes of both Aβ and tau may be an efficacious approach. We developed a novel vaccine including three his-tagged tau peptides, tau1-22, mid-region tau171-191 (taupT181), and tau388-407 (taupS396/S404), as well as two his-tagged Aβ fragments (N-terminal Aβ1-14 and N-terminal pyroglutamate AβpE3-14) with the spontaneous nanoliposome antigen particle (SNAP) system, termed SNAP-AD5. Intramuscular vaccination of nine to ten months old of 3xTg-AD mice and age-matched wild-type control animals with SNAP-AD5 or adjuvant only, once every three weeks for a total of 5 immunizations, simultaneously produced IgG titers of antibody against their specific antigens, significantly decreased Aβ and tau pathologies, and effectively improved cognitive function. SNAP-AD5 was well tolerated without any detectable adverse side effects, including inflammatory responses in the peripheral circulation and in the brain, and hemorrhages in the mouse brain. These results support that SNAP-AD5 simultaneously targeting both Aβ and tau is potentially a promising new approach for treating AD. Further optimization and development of the SNAP-AD5 vaccine for treating AD is warranted.
淀粉样蛋白(Aβ)斑块和过度磷酸化的tau神经原纤维缠结(nft)是阿尔茨海默病(AD)的组织病理学标志,也是AD治疗的靶点。由于Aβ和tau病理都驱动AD的发病和进展,单一靶向Aβ或tau的免疫疗法可能受到限制,同时靶向Aβ和tau的多个表位可能是一种有效的方法。我们开发了一种新型疫苗,包括三个他的标记的tau肽,tau1-22,中间区域tau171-191 (taupT181)和tau388-407 (taupS396/S404),以及两个他的标记的a β片段(n端a β1-14和n端焦谷氨酸a β pe3 -14),以及自发纳米脂质体抗原颗粒(SNAP)系统,称为SNAP- ad5。对9 ~ 10月龄3xTg-AD小鼠和年龄匹配的野生型对照动物肌肉注射SNAP-AD5或佐剂,每3周接种1次,共5次免疫,同时产生针对其特异性抗原的IgG抗体滴度,显著降低a β和tau病理,有效改善认知功能。SNAP-AD5耐受性良好,没有任何可检测到的不良副作用,包括外周循环和大脑的炎症反应,以及小鼠大脑出血。这些结果支持SNAP-AD5同时靶向a β和tau是一种潜在的治疗AD的新方法。进一步优化和开发用于治疗AD的SNAP-AD5疫苗是必要的。
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引用次数: 0
Self-reported health and health literacy, neuroplasticity and neuro-immunological markers during the first 12 months in newly diagnosed people living with HIV: An exploratory study 自我报告的健康和健康素养,神经可塑性和神经免疫标志物在前12个月在新诊断的艾滋病毒感染者:一项探索性研究
IF 3.5 Q2 IMMUNOLOGY Pub Date : 2026-02-01 Epub Date: 2025-12-22 DOI: 10.1016/j.bbih.2025.101162
Bengt B. Arnetz , Judith E. Arnetz , Norbert Kaminski , Ryan Tomlin , Pamela Bartlett , Robert Crawford , Andrew Jameson

Background

There is limited description of dynamic changes in stress, inflammation, neuroplasticity, and health literacy during the early phase of HIV infection. This study examined patterns in self-reported stress, neurobiological and neuroplastic markers during the initial 12 months of living with HIV. The study also evaluated possible changes in functional health literacy, that is, patients’ ability to adhere to combination antiretroviral treatment (cART).

Methods

This is an observational cohort study of one female and eleven male and patients with newly diagnosed HIV attending an urban Ryan White funded HIV clinic. Participants responded to a survey and blood was drawn at baseline, and after 1, 3, 6, 9 and 12 months, respectively. The survey measured stress, depression, and health literacy. Blood was analyzed for HIV RNA plasma viral load, CD4 cell count, and biomarkers of stress, inflammation, and neuroplasticity.

Results

Viral load decreased from an initial mean count of 353,714.83 (S.E. 251,243.96) copies/mL to 24.54 (2.01) at 12 months (Wilcoxon Signed Rank Test, p = .012). CD4 cell count increased from 321.08 (48.49) to 541.13 (50.27) cells/mm3 (p = .012). Self-rated stress decreased from 6.83 (.92) to 4.81 (.96), on a 0–10 visual analogue scale (p = .043). Cumulative levels of C-reactive protein (CRP) were inversely associated with cumulative health literacy scores during the 12-month study (Spearman's rho = - 0.634, p = .025).

Conclusion

The study confirms that during the initial 12 months living with HIV, apart from the expected improvement in viral load and CD4, there is a significant decrease in self-perceived stress, but little changes in systems inflammation. The finding of an inverse relationship between levels of a pro-inflammatory marker and health literacy requires further studies.
在HIV感染的早期阶段,关于压力、炎症、神经可塑性和健康素养的动态变化的描述有限。这项研究检查了艾滋病毒感染者最初12个月自我报告的压力、神经生物学和神经可塑性标志物的模式。该研究还评估了功能性健康素养的可能变化,即患者坚持抗逆转录病毒联合治疗(cART)的能力。方法:这是一项观察性队列研究,研究对象为一名女性和11名男性,以及在Ryan White资助的城市HIV诊所就诊的新诊断的HIV患者。参与者接受了一项调查,并分别在基线、1个月、3个月、6个月、9个月和12个月后抽血。这项调查测量了压力、抑郁和健康素养。分析血液中的HIV RNA血浆病毒载量、CD4细胞计数以及应激、炎症和神经可塑性的生物标志物。结果病毒载量从最初的平均353,714.83 (S.E. 251,243.96)拷贝/mL下降到12个月时的24.54 (2.01)(Wilcoxon sign Rank检验,p = 0.012)。CD4细胞计数从321.08(48.49)个/mm3增加到541.13(50.27)个/mm3 (p = 0.012)。自评压力由6.83(0.92)降至4.81(0.92)。96),以0-10的视觉模拟量表(p = 0.043)。在12个月的研究中,c反应蛋白(CRP)的累积水平与累积健康素养得分呈负相关(Spearman’s ρ = - 0.634, p = 0.025)。结论该研究证实,在HIV感染的最初12个月,除了预期的病毒载量和CD4的改善外,自我感知压力显著降低,但系统炎症变化不大。促炎标志物水平与健康素养之间的反比关系的发现需要进一步研究。
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引用次数: 0
A systematic review of the neurobiological mechanisms of chemotherapy-induced deficits in executive functions 化疗诱导的执行功能缺陷的神经生物学机制的系统综述
IF 3.5 Q2 IMMUNOLOGY Pub Date : 2026-02-01 Epub Date: 2025-12-18 DOI: 10.1016/j.bbih.2025.101161
Weiye Chen, Ian N. Johnston
A subset of cancer patients and survivors experience cognitive decline during and after chemotherapy, a condition known as chemotherapy-induced cognitive impairment (CICI). Among the most affected domains are executive functions (EFs) - a set of higher-order cognitive processes essential for goal-directed behaviour, including working memory, behavioural flexibility, and inhibition. Emerging evidence suggests that these domains are differentially susceptible to chemotherapy drugs, implicating the selective disruption of distinct neural circuits and neurochemical pathways. To better understand the underlying mechanisms, we conducted a systematic review of rodent models of CICI, focusing on neurobiological alterations associated with chemotherapy and their relationship to EF deficits. A comprehensive search across PubMed, Web of Science, Scopus, and PsycINFO identified 67 eligible papers. Across studies, working memory and problem-solving impairments were most frequently examined and showed the greatest overlap across multiple mechanistic categories, including oxidative stress, mitochondrial dysfunction, neuroimmune dysregulation, impaired plasticity, and altered white matter integrity. Behavioural flexibility was most often linked to disrupted neurogenesis and metabolic imbalance, whereas attention and inhibition showed variable associations with neurotransmission and synaptic markers. Considerable heterogeneity within mechanistic categories reflected interactions among treatment regimen, animal sex, strain, and timing of assessment. Future studies should integrate molecular, cellular, and systems-level analyses within longitudinal and sex-balanced designs to clarify causal mechanisms and guide targeted interventions for preserving cognitive health in cancer survivors.
一部分癌症患者和幸存者在化疗期间和之后经历认知能力下降,这种情况被称为化疗诱导的认知障碍(CICI)。其中受影响最大的领域是执行功能(EFs),这是一组对目标导向行为至关重要的高阶认知过程,包括工作记忆、行为灵活性和抑制。新出现的证据表明,这些区域对化疗药物的敏感性不同,这意味着不同的神经回路和神经化学途径的选择性破坏。为了更好地了解潜在的机制,我们对CICI的啮齿动物模型进行了系统的回顾,重点关注与化疗相关的神经生物学改变及其与EF缺陷的关系。在PubMed, Web of Science, Scopus和PsycINFO上进行全面搜索,确定了67篇符合条件的论文。在所有研究中,工作记忆和解决问题的障碍是最常被检查的,并且在多个机制类别中显示出最大的重叠,包括氧化应激、线粒体功能障碍、神经免疫失调、可塑性受损和白质完整性改变。行为灵活性通常与神经发生紊乱和代谢失衡有关,而注意力和抑制则与神经传递和突触标志物有不同的关联。机制分类中相当大的异质性反映了治疗方案、动物性别、品系和评估时间之间的相互作用。未来的研究应该在纵向和性别平衡设计中整合分子、细胞和系统水平的分析,以阐明因果机制,并指导有针对性的干预措施,以保持癌症幸存者的认知健康。
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引用次数: 0
Effects of combined prenatal exposure to air pollution and maternal stress on immune and dopaminergic gene expression in the gut-brain axis 产前空气污染暴露和母亲应激对肠-脑轴免疫和多巴胺能基因表达的影响
IF 3.5 Q2 IMMUNOLOGY Pub Date : 2026-02-01 Epub Date: 2025-12-22 DOI: 10.1016/j.bbih.2025.101165
Elise M. Martin, Matthew J. Morales, Niki Y. Li, Maura C. Stoehr, Matthew J. Kern, Madeline F. Winters, Caroline J. Smith
Air pollution and maternal stress during pregnancy are both risk factors for neurodevelopmental disorders and often converge on the same communities. Epidemiological and animal studies suggest that maternal psychosocial stress may worsen the effects of air pollutants on neurodevelopmental outcomes. Previous work utilizing a mouse model of combined prenatal exposure to diesel exhaust particles (DEP) and maternal stress (MS) has found numerous sex-specific effects of DEP/MS exposure on neuroimmune outcomes, dopamine receptors, the gut-brain axis, and social behavior. However, it is unclear how broadly the immune landscape is shifted in the brain and intestinal epithelium following DEP/MS. Here, we analyzed immune gene expression in 5 brain regions important for social behavior and in 3 regions of the intestinal epithelium in both male and female offspring at ∼postnatal day 50, following either DEP/MS or control exposure. We found several interesting overall patterns. First, changes in expression of immune genes such as CD11b and Tlr4 were concentrated in the nucleus accumbens and hippocampus. Tlr4 and Il-17ra mRNA also increased in the jejunum and colon following DEP/MS, but only in females. Second, in the nucleus accumbens, catecholamine-O-methyltransferase (Comt) and dopamine transporter 1 (Slc6a3) gene expression were increased following DEP/MS, indicating increased dopamine degradation at and reuptake from the synapse, respectively. Additionally, dopamine D2 receptor (Drd2) mRNA was decreased following DEP/MS in males. Finally, we observed numerous sex differences in immune gene expression regardless of treatment in both the brain and gut. Together, these findings suggest the nucleus accumbens is a key site for neuroimmune and dopaminergic changes following DEP/MS exposure and indicate female-specific changes in intestinal immunity in young adulthood following these prenatal exposures.
空气污染和怀孕期间的产妇压力都是神经发育障碍的危险因素,而且往往集中在同一社区。流行病学和动物研究表明,母亲的社会心理压力可能会加重空气污染物对神经发育结果的影响。先前的研究利用了一个小鼠模型,将产前暴露于柴油机尾气颗粒(DEP)和母亲压力(MS)相结合,发现了DEP/MS暴露对神经免疫结果、多巴胺受体、肠-脑轴和社会行为的许多性别特异性影响。然而,目前尚不清楚DEP/MS后脑和肠上皮的免疫格局发生了多大程度的变化。在这里,我们分析了DEP/MS或对照暴露后,出生后第50天雄性和雌性后代在5个对社会行为重要的大脑区域和3个肠上皮区域的免疫基因表达。我们发现了几个有趣的总体模式。首先,CD11b、Tlr4等免疫基因的表达变化集中在伏隔核和海马。在DEP/MS后,空肠和结肠的Tlr4和Il-17ra mRNA也增加,但仅在女性中增加。其次,在伏隔核中,DEP/MS后,儿茶酚胺- o -甲基转移酶(Comt)和多巴胺转运蛋白1 (Slc6a3)基因表达增加,分别表明突触的多巴胺降解和从突触的再摄取增加。此外,DEP/MS后,雄性多巴胺D2受体(Drd2) mRNA降低。最后,无论在大脑和肠道中接受何种治疗,我们都观察到免疫基因表达的许多性别差异。总之,这些发现表明伏隔核是DEP/MS暴露后神经免疫和多巴胺能变化的关键部位,并表明这些产前暴露后年轻成年期肠道免疫的女性特异性变化。
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引用次数: 0
Psychological distress predicts disease activity in inflammatory bowel disease: Results from the mind-body IBD longitudinal study 心理困扰预测炎症性肠病的疾病活动:来自身心IBD纵向研究的结果
IF 3.5 Q2 IMMUNOLOGY Pub Date : 2026-02-01 Epub Date: 2025-12-03 DOI: 10.1016/j.bbih.2025.101147
Natasha Seaton , Joanna L. Hudson , Valeria Mondelli , Leah Raymond , Pooja Schmill , Ailsa Hart , Rona Moss-Morris

Background & aims

Psychological distress (depression, anxiety, stress) is common in inflammatory bowel disease (IBD) and is linked to poorer outcomes, yet behavioural pathways and economic consequences remain unclear. This study tested a gut-brain-behaviour-outcome (GBBO) framework, testing: 1) reciprocal links between distress and disease activity; 2) whether health behaviours mediate distress-disease activity relationships; 3) if distress and self-reported disease activity (SRDA) predict adverse disease outcomes, controlling for inflammation and 4) whether disease activity mediates relationships between distress and adverse outcomes.

Methods

IBD patients (n = 157) reported distress, health behaviours, SRDA, healthcare use and disease-related outcomes at 3 waves at 6-month intervals. Faecal calprotectin (FCP) was assayed at baseline and 6 months. Analyses were conducted using structural equation modelling and mixed-effects models.

Results

Baseline distress predicted higher SRDA six months later (β = 0.16, p=.03) but did not predict FCP; reverse pathways were nonsignificant. Impaired sleep quality mediated 55 % of the effect of distress on future SRDA (β = 0.09, p=.04). Other behaviours were nonsignificant. Controlling for FCP, distress and SRDA independently predicted secondary healthcare usage (primary/secondary care) and disease-related outcomes (flare frequency/severity, absenteeism and productivity loss). FCP was positively related to flare frequency/severity and allied health practitioner visits only. Mediation analysis showed that SRDA partially mediated absenteeism.

Conclusions

Psychological distress exacerbates symptoms and economic cost. Poor sleep partially mediates the relationship between distress and SRDA, but not inflammation. Psychological interventions that focus on improving sleep could be cost-effective ways to improve mental health and symptom burden, with downstream impact on healthcare utilisation and productivity losses.
背景和目的心理困扰(抑郁、焦虑、压力)在炎症性肠病(IBD)中很常见,并与较差的预后有关,但行为途径和经济后果尚不清楚。本研究测试了肠道-大脑-行为-结果(GBBO)框架,测试:1)痛苦和疾病活动之间的相互联系;2)健康行为是否介导痛苦与疾病活动的关系;3)是否焦虑和自我报告疾病活动性(SRDA)预测疾病不良结局,控制炎症;4)疾病活动性是否介导焦虑和不良结局之间的关系。方法157例sibd患者每隔6个月分3次报告抑郁、健康行为、SRDA、医疗保健使用和疾病相关结局。在基线和6个月时测定粪便钙保护蛋白(FCP)。采用结构方程模型和混合效应模型进行分析。结果基线焦虑可预测6个月后较高的SRDA (β = 0.16, p= 0.03),但不能预测FCP;反向通路不显著。睡眠质量受损介导了焦虑对未来SRDA影响的55% (β = 0.09, p= 0.04)。其他行为不显著。控制FCP,窘迫和SRDA独立预测二级医疗保健使用(初级/二级医疗)和疾病相关结果(突发频率/严重程度、缺勤和生产力损失)。FCP仅与耀斑频率/严重程度和联合保健医生就诊呈正相关。中介分析表明,SRDA对旷工有部分中介作用。结论心理困扰加重了症状和经济成本。睡眠不足在一定程度上介导了焦虑和SRDA之间的关系,但不是炎症。以改善睡眠为重点的心理干预可能是改善心理健康和减轻症状负担的经济有效方法,对医疗保健利用和生产力损失具有下游影响。
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引用次数: 0
Inflammatory profiles of transdiagnostic symptom dimensions in healthy females 健康女性的炎症特征的跨诊断症状维度
IF 3.5 Q2 IMMUNOLOGY Pub Date : 2025-12-01 Epub Date: 2025-11-25 DOI: 10.1016/j.bbih.2025.101146
Alicia J. Smith , Stacey Kigar , Quentin Dercon , Mary-Ellen Lynall , Konstantinos Ioannidis , Muzaffer Kaser , Caitlin Hitchcock , Tim Dalgleish , Camilla L. Nord
<div><h3>Background</h3><div>Psychiatric disorders are increasingly conceptualised as heterogeneous categories with transdiagnostic underlying mechanisms that cut across multiple diagnoses and vary within a single diagnosis. Inflammation induced by psychosocial stress is one particularly potent example: previous research suggests that inflammatory profiles may correspond to symptom subgroups rather than traditional diagnostic categories. However, robust identification of transdiagnostic symptoms linked to specific inflammatory profiles remains rare. In this study, we examined the relationship between inflammatory profiles (at baseline and after a stress induction) and transdiagnostic symptom dimensions in females, who show higher prevalence of stress-related disorders such as anxiety and depression.</div></div><div><h3>Methods</h3><div>A modest but relatively homogenous healthy female sample, between the ages of 18 and 35, was recruited (N = 26). We obtained venous blood samples, at baseline and after a combined physiological and social stress induction, to measure full blood counts, plasma cytokines and peripheral blood mononuclear cells (PBMCs; for cell stimulation and intracellular flow cytometry analysis). Participants completed a battery of psychiatric self-report questions, from which we modelled three transdiagnostic factor scores. Finally, we used Bayesian regressions to evaluate the predictive contribution of transdiagnostic factors to inflammatory markers (at baseline and stress-induced), as well as to the principal components of inflammatory measures (derived from a principal component analysis (PCA) of the inflammatory data).</div></div><div><h3>Results</h3><div>We identified specific relationships between inflammatory profiles and transdiagnostic symptom dimensions. Higher scores on a ‘social withdrawal’ factor were associated with greater baseline neutrophil (95 % highest density interval (HDI) = [0.06, 1.32]; BF<sub>10</sub> = 2.92) and monocyte counts (95 % HDI = [0.29, 1.46]; BF<sub>10</sub> = 19.08), whereas higher ‘anxious-depression’ scores were associated with a lower baseline monocyte count (95 % HDI = [-0.96, −0.02]; BF<sub>10</sub> = 1.81) and a greater inflammatory response to stress (e.g., change in neutrophil scores from pre-to post stress induction: (95 % HDI = [0.18, 2.14]); BF<sub>10</sub> = 5.66). We also found evidence for an association between the ‘social withdrawal’ factor and an immune principal component most strongly weighted by monocytes, basophils, and IL-6 (95 % HDI = [-1.14, −0.01]; BF<sub>10</sub> = 1.88).</div></div><div><h3>Conclusions</h3><div>We find preliminary evidence that different transdiagnostic psychiatric symptom dimensions map onto specific inflammatory profiles, both at baseline and after a stress induction. This represents a proof-of-principle for the use of data-driven and hypothesis-driven approaches to identify and link transdiagnostic factors with inflammatory changes, which may be of
精神疾病越来越多地被定义为具有跨诊断潜在机制的异质类别,这些机制跨越多种诊断并在单一诊断中有所不同。由心理社会压力引起的炎症是一个特别有力的例子:先前的研究表明,炎症特征可能对应于症状亚组,而不是传统的诊断类别。然而,与特定炎症特征相关的跨诊断症状的可靠鉴定仍然很少。在这项研究中,我们研究了炎症特征(在基线和应激诱导后)与女性的跨诊断症状维度之间的关系,女性表现出更高的焦虑和抑郁等压力相关疾病的患病率。方法选取年龄在18 ~ 35岁的健康女性(N = 26)为研究对象。我们获得静脉血样本,在基线和综合生理和社会应激诱导后,测量全血细胞计数、血浆细胞因子和外周血单个核细胞(PBMCs;用于细胞刺激和细胞内流式细胞术分析)。参与者完成了一系列精神病学自我报告问题,从中我们建立了三个跨诊断因素评分模型。最后,我们使用贝叶斯回归来评估跨诊断因素对炎症标志物(基线和应激诱导)的预测贡献,以及炎症措施的主成分(来自炎症数据的主成分分析(PCA))。结果我们确定了炎症特征与跨诊断症状维度之间的特定关系。“社会退缩”因子得分越高,基线中性粒细胞越高(95%最高密度区间(HDI) = [0.06, 1.32];BF10 = 2.92)和单核细胞计数(95% HDI = [0.29, 1.46]; BF10 = 19.08),而较高的“焦虑-抑郁”评分与较低的基线单核细胞计数(95% HDI = [-0.96, - 0.02]; BF10 = 1.81)和更大的应激炎症反应(例如,中性粒细胞评分从应激诱导前到应激诱导后的变化:(95% HDI =[0.18, 2.14])相关;bf10 = 5.66)。我们还发现了“社交退缩”因素与单核细胞、嗜碱性粒细胞和白细胞介素-6 (95% HDI = [-1.14, - 0.01]; BF10 = 1.88)权重最大的免疫主成分之间存在关联的证据。结论:我们发现了初步证据,不同的跨诊断精神症状维度映射到特定的炎症谱,无论是在基线还是应激诱导后。这代表了使用数据驱动和假设驱动的方法来识别和联系跨诊断因素与炎症变化的原理证明,这可能用于未来更大规模的临床人群研究,或用于分层干预背景下的测试。
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引用次数: 0
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Brain, behavior, & immunity - health
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