Metabolic Syndrome Clinical Trial
Official title:
Probiotics and Systemic Inflammation in Patients With Metabolic Syndrome and High Cardiovascular Risk
Metabolic Syndrome (MetS) and cardiovascular disease are associated with systemic inflammation (SI). Activation of the mechanisms of inflammation is triggered by the inflammatory cytokines. Τhe NLRP3 inflammasome is activated by microbial-derived low molecular weight (LMW) factors, short chain fatty acids (SCFAs), pathogen-associated molecular pattern molecules (PAMPs), damage-associated molecular pattern molecules (DAMPs), and monosodium urate crystals. Probiotics can regulate inflammation in two ways: 1) indirectly, by producing SCFAs as well as increasing synthesis of antimicrobial peptides and 2) directly, by binding innate immune system receptors Toll-like (TLR 2, 4, 9) and triggering important signaling pathways associated with activation of NLRs affecting the formation of inflammasome, thus the inflammatory response.
Metabolic Syndrome (MetS) is associated with low-grade systemic inflammation (SI). Activation of the mechanisms of inflammation is triggered by the inflammatory cytokines produced in the adipose tissue. Among them, IL-1β interleukin plays a central role in cardiovascular disease. The active form of IL-1β results by the conversion of its inactive precursor after an infectious/inflammatory stimulus. The Nucleotide-binding Oligomerization Domain (NOD)-like Receptor containing Pyrin domain 3 (NLRP3 or cryopyrin) inflammasome is a multiprotein complex that activates caspase 1, leading to the processing and secretion of the pro-inflammatory cytokines interleukin-1β (IL-1β) via the NLRP3/caspase pathway. Τhe NLRP3 inflammasome is activated by microbial-derived Low Molecular Weight (LMW) factors, short chain fatty acids (SCFAs), Pathogen-associated molecular pattern molecules (PAMPs), Damage-associated molecular pattern molecules (DAMPs), and monosodium urate crystals. It is a randomized, double-blind clinical trial in patients with MetS and cardiovascular disease. Patients will be randomized into two groups: A. those who will receive probiotic supplements and B. placebo-treated patients. Both groups will follow the usual clinical practice as far as drugs and diet concerned. Τhe primary objective of this study is to investigate the effect of administration of the probiotic mix on IL-1β production by stimulated peripheral blood mononuclear cells (PBMCs) in patients at high cardiovascular risk with MetS at the end of the intervention. Secondly, to investigate the effect of probiotics on endothelial glycocalyx thickness, on hrCRP and on HbA1c levels, on the components of the MetS, on the gut microbiota at the end and 4 weeks after the completion of the intervention. Time frame 12 weeks. ;
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