What’s Hot

What’s hot covering significant new developments in neuroendocrine-immunology, neuroscience and immunology

Afferent Vagus Nerve Stimulation Activates Brain Locus Coeruleus and Improves Experimental Joint Inflammation

Afferent Vagus Nerve Stimulation Activates Brain Locus Coeruleus and Improves Experimental Joint Inflammation

A recent study published in the Brain, Behavior, and Immunity journal indicates, for the first time, that stimulation of vagal afferents or specific brain areas can modulate joint inflammation. This new central pathway involves sympathetic nervous system activation and local stimulation of synovial β-adrenoceptors. Vagus nerve stimulation (VNS) is a well-known procedure that limits inflammation and […]

Antibiotics through Effects on the Microbiota-Gut-Brain Axis and Inflammatory Monocytes May Reshape Brain Hippocampal Neurogenesis

Antibiotics through Effects on the Microbiota-Gut-Brain Axis and Inflammatory Monocytes May Reshape Brain Hippocampal Neurogenesis

A new Cell Reports study indicates that ‘inflammatory’ monocytes may represent the missing ‘pathogenic link’ between the antibiotics’ effects on gut microbiota, and the subsequent changes in the brain hippocampal neurogenesis and plasticity. Recent research suggests that antibiotics may exert some of their unsolicited side effects through effects on the gut-brain axis. Soon after birth, […]

Gut and Gingival Bacteria: Game Changers or Innocent Bystanders in Rheumatoid Arthritis?

Gut and Gingival Bacteria: Game Changers or Innocent Bystanders in Rheumatoid Arthritis?

Several publications in the last 2-3 years brought more interest in the link between gut and gingival bacteria or microbiota, and human health and diseases, and particularly their possible game changer role in the pathogenesis of rheumatoid arthritis. The human gastrointestinal tract comprises approximately 1014 bacterial microbes and amounts to a biomass of approximately 2 […]

Activation of the Brain-Splenic Nerve Axis in Hypertension: The Cholinergic-Sympathetic-Immune System Connection

Activation of the Brain-Splenic Nerve Axis in Hypertension: The Cholinergic-Sympathetic-Immune System Connection

A recent Nature Communications study indicates that hypertension is linked to T cell activation and an egression of T-cells from the spleen, and that this process is dependent on a vagus-splenic nerve connection. Hypertension is a major risk factor for coronary heart diseases and stroke. Despite various therapeutic approaches 10-15% of the general hypertensive population […]

Sympathetic Nerves via β2-adrenoceptor Signaling Generate Circadian Rhythms and Govern Lymphocyte Recirculation in Lymph Nodes

Sympathetic Nerves via β2-adrenoceptor Signaling Generate Circadian Rhythms and Govern Lymphocyte Recirculation in Lymph Nodes

A new study, published in the Journal of Experimental Medicine (JEM), indicates that in mice, the sympathetic nervous system (SNS) innervation, through β2-adrenergic receptors activation controls the circadian dynamics and traffic of lymphocytes through the lymph nodes (LNs). Both primary and secondary lymphoid organs are heavily innervated, mostly by the peripheral sympathetic nerves. Thus, locally […]

New Function of Microglia: Promotion of Filopodia and Hence Synaptogenesis during Early Brain Development

New Function of Microglia: Promotion of Filopodia and Hence Synaptogenesis during Early Brain Development

A recent study published in Nature Communications reveals that the brain microglia influences the developing brain through induction of filopodia creation, thus, shaping neuronal connectivity and synapses formation. Microglia are important components of the neuro-immune interactions in the brain. As the resident macrophage cells, the microglial cells provide the main immune defense in the central […]

Adiponectin Enhances Th17 Actions and RANKL Expression Promoting Arthritis Inflammation and Bone Erosion

Adiponectin Enhances Th17 Actions and RANKL Expression Promoting Arthritis Inflammation and Bone Erosion

A study published in the online Scientific Reports journal reveals a new maladaptive and pro-inflammatory effect of adiponectin – its ability to increase T helper (Th)17 immune responses and the expression of receptor activator of nuclear factor-κB ligand (RANKL) in an animal model of arthritis. Adiponectin, a protein secreted mostly by adipocytes (fat cells),  is […]

Microglia and TREM2 Microglia-Specific Gene May Exert a Protective Role in Alzheimer´s Disease

Microglia and TREM2 Microglia-Specific Gene May Exert a Protective Role in Alzheimer´s Disease

A study published in the May issue of Neuron indicates that the brain microglia may exert a protective role in Alzheimer´s disease (AD) by tightly wrapping around the early amyloid fibrils and plaques endorsing their compaction and insulation. In Alzheimer´s disease two hallmark protein aggregates, amyloid-β (Aβ) plaques and neurofibrillary tangles are the major players […]

TLRs-Activated Microglia Polarizes γδ T Cells towards a Neurotoxic IL-17+ γδ T Cell Phenotype: Implications for Multiple Sclerosis, Stroke and Alzheimer´s Disease

TLRs-Activated Microglia Polarizes γδ T Cells towards a Neurotoxic IL-17+ γδ T Cell Phenotype: Implications for Multiple Sclerosis, Stroke and Alzheimer´s Disease

A recent PLoS One study indicates that the cross-talk between the brain microglia and T cells that follows a microglia’s activation via Toll-like receptors (TLRs) stimulation, results in a shift of the T cells’ profile towards a neurotoxic IL-17+ γδ T cells phenotype. After the discovery of T helper (Th)17 cells in 2005, their main […]

The Th17–IL-17–IL-17R System Linked To Altered Brain Development and Autism-Like Symptoms in Mice

The Th17–IL-17–IL-17R System Linked To Altered Brain Development and Autism-Like Symptoms in Mice

A new report published in Science indicates that the key pro-inflammatory cytokine interleukin (IL)-17a may interfere with the normal brain development in a mouse model of autism, causing disorganized cortical cytoarchitecture and autism-like symptoms. IL-17 is a highly pathogenic pro-inflammatory cytokine, considered a major player in several autoimmune/inflammatory diseases, whereas altered cytokine profiles and increased […]

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