Journal
JOURNAL OF NEUROCHEMISTRY
Volume 148, Issue 2, Pages 168-187Publisher
WILEY
DOI: 10.1111/jnc.14574
Keywords
biomarker; DAMP; neuroinflammation; S100B
Categories
Funding
- Nando and Elsa Peretti Foundation [NaEPF 2016-033]
- Universita Cattolica del Sacro Cuore (UCSC) [D3-2 line 2015, D1 line 2017]
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S100B is a Ca2+-binding protein mainly concentrated in astrocytes. Its levels in biological fluids (cerebrospinal fluid, peripheral and cord blood, urine, saliva, amniotic fluid) are recognized as a reliable biomarker of active neural distress. Although the wide spectrum of diseases in which the protein is involved (acute brain injury, neurodegenerative diseases, congenital/perinatal disorders, psychiatric disorders) reduces its specificity, its levels remain an important aid in monitoring the trend of the disorder. Mounting evidence now points to S100B as a Damage-Associated Molecular Pattern molecule which, when released at high concentration, through its Receptor for Advanced Glycation Endproducts, triggers tissue reaction to damage in a series of different neural disorders. This review addresses this novel scenario, presenting data indicating that S100B levels and/or distribution in the nervous tissue of patients and/or experimental models of different neural disorders, for which the protein is used as a biomarker, are directly related to the progress of the disease: acute brain injury (ischemic/hemorrhagic stroke, traumatic injury), neurodegenerative diseases (Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, multiple sclerosis), congenital/perinatal disorders (Down syndrome, spinocerebellar ataxia-1), psychiatric disorders (schizophrenia, mood disorders), inflammatory bowel disease. In many cases, over-expression/administration of the protein induces worsening of the disease, whereas its deletion/inactivation produces amelioration. This review points out that the pivotal role of the protein resulting from these data, opens the perspective that S100B may be regarded as a therapeutic target for these different diseases, which appear to share some common features reasonably attributable to neuroinflammation, regardless their origin.
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