Brain, Behavior, and Immunity最新文献

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Synaptic proteome perturbations after maternal immune activation: Identification of embryonic and adult hippocampal changes 母体免疫激活后的突触蛋白质组扰动:识别胚胎和成年海马的变化
IF 8.8 2区 医学
Brain, Behavior, and Immunity Pub Date : 2024-07-31 DOI: 10.1016/j.bbi.2024.07.040
{"title":"Synaptic proteome perturbations after maternal immune activation: Identification of embryonic and adult hippocampal changes","authors":"","doi":"10.1016/j.bbi.2024.07.040","DOIUrl":"10.1016/j.bbi.2024.07.040","url":null,"abstract":"<div><h3>Background</h3><p>Maternal immune activation (MIA) triggers neurobiological changes in offspring, potentially reshaping the molecular synaptic landscape, with the hippocampus being particularly vulnerable. However, critical details regarding developmental timing of these changes and whether they differ between males and females remain unclear.</p></div><div><h3>Methods</h3><p>We induced MIA in <em>C57BL/6J</em> mice on gestational day nine using the viral mimetic poly(I:C) and performed mass spectrometry-based proteomic analyses on hippocampal synaptoneurosomes of embryonic (E18) and adult (20 ± 1 weeks) MIA offspring.</p></div><div><h3>Results</h3><p>In the embryonic synaptoneurosomes, MIA led to lipid, polysaccharide, and glycoprotein metabolism pathway disruptions. In the adult synaptic proteome, we observed a dynamic shift toward transmembrane trafficking, intracellular signalling cascades, including cell death and growth, and cytoskeletal organisation. In adults, many associated pathways overlapped between males and females. However, we found distinct sex-specific enrichment of dopaminergic and glutamatergic pathways. We identified 50 proteins altered by MIA in both embryonic and adult samples (28 with the same directionality), mainly involved in presynaptic structure and synaptic vesicle function. We probed human phenome-wide association study data in the cognitive and psychiatric domains, and 49 of the 50 genes encoding these proteins were significantly associated with the investigated phenotypes.</p></div><div><h3>Conclusions</h3><p>Our data emphasise the dynamic effects of viral-like MIA on developing and mature hippocampi and provide novel targets for study following prenatal immune challenges. The 22 proteins that changed directionality from the embryonic to adult hippocampus, suggestive of compensatory over-adaptions, are particularly attractive for future investigations.</p></div>","PeriodicalId":9199,"journal":{"name":"Brain, Behavior, and Immunity","volume":null,"pages":null},"PeriodicalIF":8.8,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0889159124005191/pdfft?md5=21b179d211483a5233bd46fb4bf443c7&pid=1-s2.0-S0889159124005191-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141874171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mitigating inflammatory response to sleep deficiency through low dose aspirin: A challenge or a chance for behavioural sleep medicine? 通过小剂量阿司匹林缓解睡眠不足引起的炎症反应:行为睡眠医学的挑战还是机遇?
IF 8.8 2区 医学
Brain, Behavior, and Immunity Pub Date : 2024-07-30 DOI: 10.1016/j.bbi.2024.07.045
{"title":"Mitigating inflammatory response to sleep deficiency through low dose aspirin: A challenge or a chance for behavioural sleep medicine?","authors":"","doi":"10.1016/j.bbi.2024.07.045","DOIUrl":"10.1016/j.bbi.2024.07.045","url":null,"abstract":"","PeriodicalId":9199,"journal":{"name":"Brain, Behavior, and Immunity","volume":null,"pages":null},"PeriodicalIF":8.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141874170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sex differences in the inflammation-depression link: A systematic review and meta-analysis 炎症与抑郁之间的性别差异:系统回顾与荟萃分析
IF 8.8 2区 医学
Brain, Behavior, and Immunity Pub Date : 2024-07-30 DOI: 10.1016/j.bbi.2024.07.037
{"title":"Sex differences in the inflammation-depression link: A systematic review and meta-analysis","authors":"","doi":"10.1016/j.bbi.2024.07.037","DOIUrl":"10.1016/j.bbi.2024.07.037","url":null,"abstract":"<div><p>Major Depressive Disorder (MDD) is a heterogeneous disorder that affects twice as many women than men. Precluding advances in more tailored and efficacious treatments for depression is the lack of reliable biomarkers. While depression is linked to elevations in inflammatory immune system functioning, this relationship is not evident among all individuals with depression and may vary based on symptom subtypes and/or sex. This systematic review and meta-analysis examined whether inflammatory immune peripheral markers of depression are sex-specific. PRISMA guidelines were followed for the systematic review, and a comprehensive search strategy that identified studies from PubMed and PsycInfo was applied. Studies were included if they reported C-reactive protein (CRP), interleukin (IL)-6, tumor necrosis factor (TNF)-α and/or IL-1β for males and/or females among depressed and healthy adults. We identified 23 studies that satisfied these inclusion criteria. Random-effects meta-analysis models were fit, and measures of association were summarized between levels of circulating markers of inflammation in depressed and healthy males and females. Sex-based analyses revealed elevated levels of CRP among females with depression (Cohen’s d = 0.19) relative to their healthy counterparts (p = 0.02), an effect not apparent among males (Cohen’s d = -0.01). Similarly, levels of IL-6 were increased among females with depression compared to healthy controls (Cohen’s d = 0.51; p = 0.04), but once again this was not found among males (Cohen’s d = 0.16). While TNF-α levels were elevated among individuals with depression compared to controls (p = 0.01), no statistically significant sex differences were found. The meta-analysis for IL-1β resulted in only three articles, and thus, results are presented in the supplemental section. This meta-analysis advances our understanding of the unique involvement of inflammatory biomarkers in depression among men and women, which may help inform more tailored sex-specific treatment approaches in the future.</p></div>","PeriodicalId":9199,"journal":{"name":"Brain, Behavior, and Immunity","volume":null,"pages":null},"PeriodicalIF":8.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0889159124005129/pdfft?md5=7c40a6d19db33bcffcbe502742bc88a6&pid=1-s2.0-S0889159124005129-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141795962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Elevated antibody binding to striatal cholinergic interneurons in patients with pediatric acute-onset neuropsychiatric syndrome 小儿急性神经精神综合征患者纹状体胆碱能中间神经元抗体结合率升高
IF 8.8 2区 医学
Brain, Behavior, and Immunity Pub Date : 2024-07-30 DOI: 10.1016/j.bbi.2024.07.044
{"title":"Elevated antibody binding to striatal cholinergic interneurons in patients with pediatric acute-onset neuropsychiatric syndrome","authors":"","doi":"10.1016/j.bbi.2024.07.044","DOIUrl":"10.1016/j.bbi.2024.07.044","url":null,"abstract":"<div><p>Pediatric Acute-onset Neuropsychiatric Syndrome (PANS) is characterized by the abrupt onset of significant obsessive–compulsive symptoms (OCS) and/or severe food restriction, together with other neuropsychiatric manifestations. An autoimmune pathogenesis triggered by infection has been proposed for at least a subset of PANS. The older diagnosis of Pediatric Autoimmune Neuropsychiatric Disorder Associated with Streptococcus (PANDAS) describes rapid onset of OCD and/or tics associated with infection with Group A Streptococcus. The pathophysiology of PANS and PANDAS remains incompletely understood. We recently found serum antibodies from children with rigorously defined PANDAS to selectively bind to cholinergic interneurons (CINs) in the striatum. Here we examine this binding in children with relapsing and remitting PANS, a more heterogeneous condition, collected in a distinct clinical context from those examined in our previous work, from children with a clinical history of Streptococcus infection. IgG from PANS cases showed elevated binding to striatal CINs in both mouse and human brain. Patient plasma collected during symptom flare decreased a molecular marker of CIN activity, phospho-riboprotein S6, in <em>ex vivo</em> brain slices; control plasma did not. Neither elevated antibody binding to CINs nor diminished CIN activity was seen with plasma collected from the same children during remission. These findings replicate what we have seen previously in PANDAS and support the hypothesis that at least a subset of PANS cases have a neuroimmune pathogenesis. Given the critical role of CINs in modulating basal ganglia function, these findings confirm striatal CINs as a locus of interest in the pathophysiology of both PANS and PANDAS.</p></div>","PeriodicalId":9199,"journal":{"name":"Brain, Behavior, and Immunity","volume":null,"pages":null},"PeriodicalIF":8.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141795792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
House dust mite-induced asthma exacerbates Alzheimer’s disease changes in the brain of the AppNL-G-F mouse model of disease 家庭尘螨诱发的哮喘会加剧 AppNL-G-F 阿尔茨海默病小鼠模型大脑中阿尔茨海默病的变化
IF 8.8 2区 医学
Brain, Behavior, and Immunity Pub Date : 2024-07-29 DOI: 10.1016/j.bbi.2024.07.038
{"title":"House dust mite-induced asthma exacerbates Alzheimer’s disease changes in the brain of the AppNL-G-F mouse model of disease","authors":"","doi":"10.1016/j.bbi.2024.07.038","DOIUrl":"10.1016/j.bbi.2024.07.038","url":null,"abstract":"<div><p>Alzheimer’s disease (AD) is an age-related neurodegenerative disorder characterized by the accumulation of amyloid-β (Aβ) plaques, neuroinflammation, and neuronal death. Besides aging, various comorbidities increase the risk of AD, including obesity, diabetes, and allergic asthma. Epidemiological studies have reported a 2.17-fold higher risk of dementia in asthmatic patients. However, the molecular mechanism(s) underlying this asthma-associated AD exacerbation is unknown. This study was designed to explore house dust mite (HDM)-induced asthma effects on AD-related brain changes using the <em>App<sup>NL-G-F</sup></em> transgenic mouse model of disease. Male and female 8–9 months old C57BL/6J wild type and <em>App<sup>NL-G-F</sup></em> mice were exposed to no treatment, saline sham, or HDM extract every alternate day for 16 weeks for comparison across genotypes and treatment. Mice were euthanized at the end of the experiment, and broncho-alveolar lavage fluid (BALF), blood, lungs, and brains were collected. BALF was used to quantify immune cell phenotype, cytokine levels, total protein content, lactate dehydrogenase (LDH) activity, and total IgE. Lungs were sectioned and stained with hematoxylin and eosin, Alcian blue, and Masson’s trichrome. Serum levels of cytokines and soluble Aβ1-40/42 were quantified. Brains were sectioned and immunostained for Aβ, GFAP, CD68, and collagen IV. Finally, frozen hippocampi and temporal cortices were used to perform Aβ ELISAs and cytokine arrays, respectively. HDM exposure led to increased levels of inflammatory cells, cytokines, total protein content, LDH activity, and total IgE in the BALF, as well as increased pulmonary mucus and collagen staining in both sexes and genotypes. Levels of serum cytokines increased in all HDM-exposed groups. Serum from the <em>App<sup>NL-G-F</sup></em> HDM-induced asthma group also had significantly increased soluble Aβ1-42 levels in both sexes. In agreement with this peripheral change, hippocampi from asthma-induced male and female <em>App<sup>NL-G-F</sup></em> mice demonstrated elevated Aβ plaque load and increased soluble Aβ 1–40/42 and insoluble Aβ 1–40 levels. HDM exposure also increased astrogliosis and microgliosis in both sexes of <em>App<sup>NL-G-F</sup></em> mice, as indicated by GFAP and CD68 immunoreactivity, respectively. Additionally, HDM exposure elevated cortical levels of several cytokines in both sexes and genotypes. Finally, HDM-exposed groups also showed a disturbed blood–brain-barrier (BBB) integrity in the hippocampus of <em>App<sup>NL-G-F</sup></em> mice, as indicated by decreased collagen IV immunoreactivity. HDM exposure was responsible for an asthma-like condition in the lungs that exacerbated Aβ pathology, astrogliosis, microgliosis, and cytokine changes in the brains of male and female <em>App<sup>NL-G-F</sup></em> mice that correlated with reduced BBB integrity. Defining mechanisms of asthma effects on the brain may identify novel therapeutic ta","PeriodicalId":9199,"journal":{"name":"Brain, Behavior, and Immunity","volume":null,"pages":null},"PeriodicalIF":8.8,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0889159124005142/pdfft?md5=82d0f662c75f2de1af6fd69f39daad59&pid=1-s2.0-S0889159124005142-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141796423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prenatal exposure to common infections and newborn DNA methylation: A prospective, population-based study 产前接触常见感染与新生儿 DNA 甲基化:一项基于人群的前瞻性研究
IF 8.8 2区 医学
Brain, Behavior, and Immunity Pub Date : 2024-07-29 DOI: 10.1016/j.bbi.2024.07.046
{"title":"Prenatal exposure to common infections and newborn DNA methylation: A prospective, population-based study","authors":"","doi":"10.1016/j.bbi.2024.07.046","DOIUrl":"10.1016/j.bbi.2024.07.046","url":null,"abstract":"<div><h3>Background</h3><p>Infections during pregnancy have been robustly associated with adverse mental and physical health outcomes in offspring, yet the underlying molecular pathways remain largely unknown. Here, we examined whether exposure to common infections <em>in utero</em> associates with DNA methylation (DNAm) patterns at birth and whether this in turn relates to offspring health outcomes in the general population.</p></div><div><h3>Methods</h3><p>Using data from 2,367 children from the Dutch population-based Generation R Study, we first performed an epigenome-wide association study to identify differentially methylated sites and regions at birth associated with prenatal infection exposure. We also examined the influence of infection timing by using self-reported cumulative infection scores for each trimester. Second, we sought to develop an aggregate methylation profile score (MPS) based on cord blood DNAm as an epigenetic proxy of prenatal infection exposure and tested whether this MPS prospectively associates with offspring health outcomes, including psychiatric symptoms, BMI, and asthma at ages 13–16 years. Third, we investigated whether prenatal infection exposure associates with offspring epigenetic age acceleration – a marker of biological aging. Across all analysis steps, we tested whether our findings replicate in 864 participants from an independent population-based cohort (ALSPAC, UK).</p></div><div><h3>Results</h3><p>We observed no differentially methylated sites or regions in cord blood in relation to prenatal infection exposure, after multiple testing correction. 33 DNAm sites showed suggestive associations (p &lt; 5e10 − 5; of which one was also nominally associated in ALSPAC), indicating potential links to genes associated with immune, neurodevelopmental, and cardiovascular pathways. While the MPS of prenatal infections associated with maternal reports of infections in the internal hold out sample in the Generation R Study (R<sup>2</sup><sub>incremental</sub> = 0.049), it did not replicate in ALSPAC (R<sup>2</sup><sub>incremental</sub> = 0.001), and it did not prospectively associate with offspring health outcomes in either cohort. Moreover, we observed no association between prenatal exposure to infections and epigenetic age acceleration across cohorts and clocks.</p></div><div><h3>Conclusion</h3><p>In contrast to prior studies, which reported DNAm differences in offspring exposed to severe infections <em>in utero</em>, we do not find evidence for associations between self-reported clinically evident common infections during pregnancy and DNAm or epigenetic aging in cord blood within the general pediatric population. Future studies are needed to establish whether associations exist but are too subtle to be statistically meaningful with present sample sizes, whether they replicate in a cohort with a more similar infection score as our discovery cohort, whether they occur in different tissues than cord blood, and whether","PeriodicalId":9199,"journal":{"name":"Brain, Behavior, and Immunity","volume":null,"pages":null},"PeriodicalIF":8.8,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0889159124005221/pdfft?md5=3bbc447537de5012a08302a977a8ce8f&pid=1-s2.0-S0889159124005221-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141796555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improving the validity of studies on the relationship between social health and Immunity of older Adults: Letter to the editor 提高社会健康与老年人免疫力之间关系研究的有效性:致编辑的信
IF 8.8 2区 医学
Brain, Behavior, and Immunity Pub Date : 2024-07-28 DOI: 10.1016/j.bbi.2024.07.031
{"title":"Improving the validity of studies on the relationship between social health and Immunity of older Adults: Letter to the editor","authors":"","doi":"10.1016/j.bbi.2024.07.031","DOIUrl":"10.1016/j.bbi.2024.07.031","url":null,"abstract":"<div><p>The recent study by Isabelle F. <span><span>van der Velpen et al., (2024)</span></span>, published in Brain Behavior and Immunity, explores the intricate relationship between social health, marital status, and their effects on immune markers and neurodegeneration in the elderly. It highlights significant gender and marital status differences impacting immune system health and plasma biomarkers. Despite its depth, the study’s reliance on self-reported measures for loneliness and social support may not fully capture the complexity of social health, which includes dynamic components like social integration. The use of broad immune indices, such as the Granulocyte to Lymphocyte Ratio and Systemic Immune Inflammation index, limits the detailed understanding of specific immune pathways. The study’s cross-sectional design restricts causal inferences, underscoring the need for longitudinal research to establish temporal sequences and causality in the relationship between social health, immune function, and neurodegeneration. Additionally, while the study identifies gender differences, it does not delve into the mechanisms driving these differences, nor does it account for psychosocial factors such as mental health, physical activity, and diet. These findings emphasize the importance of gender-specific health interventions and policies to address social determinants like marital status, which significantly impact long-term health outcomes in older adults.</p></div>","PeriodicalId":9199,"journal":{"name":"Brain, Behavior, and Immunity","volume":null,"pages":null},"PeriodicalIF":8.8,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141839250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular mechanisms underlying stress vulnerability and resilience in the chronic mild stress model: New insights from mRNA and miRNAs data combining 慢性轻度压力模型中压力脆弱性和恢复力的分子机制:mRNA和miRNAs数据组合的新见解。
IF 8.8 2区 医学
Brain, Behavior, and Immunity Pub Date : 2024-07-27 DOI: 10.1016/j.bbi.2024.07.035
{"title":"Molecular mechanisms underlying stress vulnerability and resilience in the chronic mild stress model: New insights from mRNA and miRNAs data combining","authors":"","doi":"10.1016/j.bbi.2024.07.035","DOIUrl":"10.1016/j.bbi.2024.07.035","url":null,"abstract":"<div><p>Stress is a major risk factor for the development of psychiatric disorders, including depression. However, its effects are not the same in all the subjects as only a portion of individuals exposed to stress will eventually develop negative mental outcomes, while others can be considered resilient. However, the biological processes underlying the development of a vulnerable or resilient phenotype are still poor understood. In order to cover this, we here used both transcriptomic and miRNomic based approaches in the ventral hippocampus of control (CON) and rats exposed to the chronic mild stress (CMS) paradigm, which were then divided into vulnerable (VULN) or resilient (RES) animals according to the sucrose consumption test.</p><p>Transcriptomic analyses in VULN rats, compared to both the group of CON and RES animals, revealed the activation of inflammatory/immune-related pathways, specifically involved in antibodies and cytokine production, and the inhibition of pathways involved in protein synthesis. Conversely, transcriptomic data in RES animals suggested the activation of several pathways involved in neurotransmission.</p><p>We then performed a mRNA-miRNA integration analysis by using miRComb R package, and we found that the most significant mRNA-miRNA pairs were involved in promoting the inflammatory status in VULN animals and, vice versa, by decreasing it in RES rats. Moreover, in VULN animals, the mRNA-miRNA combining analyses revealed the modulation of the olfactory sensory system, a key biological process that has been already found involved in the etiology of stress related disorders such as depression.</p><p>Overall, our mRNA-miRNA integration-based approach identified distinct biological processes that are relevant for the development of a vulnerable or resilient phenotype in response to the negative effects of CMS exposure, which could allow the identification of novel targets for prevention or treatment.</p></div>","PeriodicalId":9199,"journal":{"name":"Brain, Behavior, and Immunity","volume":null,"pages":null},"PeriodicalIF":8.8,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141791929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Healthy foods, healthy brain? Mediterranean diet is associated with changes in inflammatory pathways affecting brain and behavior in a monkey model 健康食品,健康大脑?在猴子模型中,地中海饮食与影响大脑和行为的炎症通路的变化有关。
IF 8.8 2区 医学
Brain, Behavior, and Immunity Pub Date : 2024-07-25 DOI: 10.1016/j.bbi.2024.07.018
{"title":"Healthy foods, healthy brain? Mediterranean diet is associated with changes in inflammatory pathways affecting brain and behavior in a monkey model","authors":"","doi":"10.1016/j.bbi.2024.07.018","DOIUrl":"10.1016/j.bbi.2024.07.018","url":null,"abstract":"","PeriodicalId":9199,"journal":{"name":"Brain, Behavior, and Immunity","volume":null,"pages":null},"PeriodicalIF":8.8,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141723095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modulation of anxiety-like behavior in galactooligosaccharide-fed mice: A potential role for bacterial tryptophan metabolites and reduced microglial reactivity 调节喂食半乳寡糖小鼠的焦虑样行为:细菌色氨酸代谢物和小胶质细胞反应性降低的潜在作用
IF 8.8 2区 医学
Brain, Behavior, and Immunity Pub Date : 2024-07-25 DOI: 10.1016/j.bbi.2024.07.024
{"title":"Modulation of anxiety-like behavior in galactooligosaccharide-fed mice: A potential role for bacterial tryptophan metabolites and reduced microglial reactivity","authors":"","doi":"10.1016/j.bbi.2024.07.024","DOIUrl":"10.1016/j.bbi.2024.07.024","url":null,"abstract":"<div><p>Prebiotic galactooligosaccharides (GOS) reduce anxiety-like behaviors in mice and humans. However, the biological pathways behind these behavioral changes are not well understood. To begin to study these pathways, we utilized C57BL/6 mice that were fed a standard diet with or without GOS supplementation for 3 weeks prior to testing on the open field. After behavioral testing, colonic contents and serum were collected for bacteriome (16S rRNA gene sequencing, colonic contents only) and metabolome (UPLC-MS, colonic contents and serum data) analyses. As expected, GOS significantly reduced anxiety-like behavior (i.e., increased time in the center) and decreased cytokine gene expression (<em>Tnfa</em> and <em>Ccl2</em>) in the prefrontal cortex. Notably, time in the center of the open field was significantly correlated with serum methyl-indole-3-acetic acid (methyl-IAA). This metabolite is a methylated form of indole-3-acetic acid (IAA) that is derived from bacterial metabolism of tryptophan. Sequencing analyses showed that GOS significantly increased <em>Lachnospiraceae</em> UCG006 and <em>Akkermansia</em>; these taxa are known to metabolize both GOS and tryptophan. To determine the extent to which methyl-IAA can affect anxiety-like behavior, mice were intraperitoneally injected with methyl-IAA. Mice given methyl-IAA had a reduction in anxiety-like behavior in the open field, along with lower <em>Tnfa</em> in the prefrontal cortex. Methyl-IAA was also found to reduce TNF-α (as well as CCL2) production by LPS-stimulated BV2 microglia. Together, these data support a novel pathway through which GOS reduces anxiety-like behaviors in mice and suggests that the bacterial metabolite methyl-IAA reduces microglial cytokine and chemokine production, which in turn reduces anxiety-like behavior.</p></div>","PeriodicalId":9199,"journal":{"name":"Brain, Behavior, and Immunity","volume":null,"pages":null},"PeriodicalIF":8.8,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0889159124004987/pdfft?md5=7892f7ca35c0dc9b1cbfe2044f24bfad&pid=1-s2.0-S0889159124004987-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141787296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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