ArticleJournal of neuroinflammation2023
Helicobacter pylori outer membrane vesicles induce astrocyte reactivity through nuclear factor-κappa B activation and cause neuronal damage in vivo in a murine model.
Article in Journal of neuroinflammation, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.
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Who cites it
50 citing papers in PubMed, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.
- Bacterial extracellular vesicles - brain invaders? A systematic review.Frontiers in molecular neuroscience · 2023Pooled it
- Helicobacter pylori Outer Membrane Vesicles Engage TLR2 Through NapA to Promote Epithelial Association and Inflammatory Signalling.Journal of extracellular vesicles · 2026Article
- Berberine and Berberine-Derived Compounds as Promising Weapons AgainstPharmaceuticals (Basel, Switzerland) · 2026Review
- Oral Microbial Extracellular Vesicles as Novel Mediators of Alzheimer's Pathogenesis: A Critical Review of the Periodontal-Brain Axis.Neurotoxicity research · 2026Review
- Bacterial extracellular vesicles in the brain: Pathological effects and therapeutic possibilities.Neural regeneration research · 2026Article
- Helicobacter pylori-derived outer membrane vesicles: Pathogenic roles, microbiota interactions, and biomedical applications.Journal of advanced research · 2026Review
- Porphyromonas gingivalis outer membrane vesicles drive neuroinflammation via TGM2-mediated mitochondria-associated endoplasmic reticulum membranes.BMC oral health · 2026Article
- Neuroinflammation-induced downregulation of RAB7 in murine astrocytes disrupts endo-lysosomal homeostasis and induces astrogliosis.Cell communication and signaling : CCS · 2026Article
- Altered microbial cargo in fecal microbiome-derived outer membrane vesicles as novel biomarkers for vascular dementia.BMC microbiology · 2026Article
- Review
- Extracellular Vesicles of Streptococcus anginosus Mediate Gastritis via Epithelial Barrier Disruption and Macrophage-driven Inflammation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Characterization ofMicroorganisms · 2026Article
- Comparative preventive effects of probiotic and postbiotic preparations ofGut microbes reports · 2026Article
- Peri-implantitis derived extracellular vesicle as vectors of neuroinflammation.Frontiers in cellular neuroscience · 2026Article
- Evaluation of Seropositivity Developed Against Specific Antigens ofNoro psikiyatri arsivi · 2026Article
- CirculatingFrontiers in cellular and infection microbiology · 2026Article
- Helicobacter pylori infection and α-synuclein pathology drive parallel neurodegenerative pathways in the substantia nigra.Journal of neuroinflammation · 2025Article
- Two Sides of the Same Coin-Mechanistic Insight, Diagnostic Application and Therapeutic Translation of Bacterial and Host-Derived Extracellular Vesicles.Journal of extracellular biology · 2025Review
- Hsp60-Bearing Exosomes inCells · 2025Review
- Helicobacter hepaticus CdtB promoted brain impairment in BALB/c mice via gut-brain axis.Gut pathogens · 2025Article
Corrections and comments
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Authors and funding
9 authors at 4 institutions in 2 countries.
Funding
Abstract
backgroundHelicobacter pylori (Hp) infects the stomach of 50% of the world's population. Importantly, chronic infection by this bacterium correlates with the appearance of several extra-gastric pathologies, including neurodegenerative diseases. In such conditions, brain astrocytes become reactive and neurotoxic. However, it is still unclear whether this highly prevalent bacterium or the nanosized outer membrane vesicles (OMVs) they produce, can reach the brain, thus affecting neurons/astrocytes. Here, we evaluated the effects of Hp OMVs on astrocytes and neurons in vivo and in vitro.
methodsPurified OMVs were characterized by mass spectrometry (MS/MS). Labeled OMVs were administered orally or injected into the mouse tail vein to study OMV-brain distribution. By immunofluorescence of tissue samples, we evaluated: GFAP (astrocytes), βIII tubulin (neurons), and urease (OMVs). The in vitro effect of OMVs in astrocytes was assessed by monitoring NF-κB activation, expression of reactivity markers, cytokines in astrocyte-conditioned medium (ACM), and neuronal cell viability.
resultsUrease and GroEL were prominent proteins in OMVs. Urease (OMVs) was present in the mouse brain and its detection coincided with astrocyte reactivity and neuronal damage. In vitro, OMVs induced astrocyte reactivity by increasing the intermediate filament proteins GFAP and vimentin, the plasma membrane α
conclusionsOMVs administered orally or injected into the mouse bloodstream reach the brain, altering astrocyte function and promoting neuronal damage in vivo. The effects of OMVs on astrocytes were confirmed in vitro and shown to be NF-κB-dependent. These findings suggest that Hp could trigger systemic effects by releasing nanosized vesicles that cross epithelial barriers and access the CNS, thus altering brain cells.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.