WikiBiomeThe human microbiome encyclopediaRanked matches across titles, topics, categories, and article introductions, filtered to mechanism.
The ability of microorganisms to survive and replicate in the presence of antimicrobial agents — antibiotics, antifungals, antivirals, antiparasitic drugs — at concentrations that would normally inhibit or kill them. Antimicrobial resistance (AMR) is designated by the W…
Amyloid-beta (Aβ) is a 36–43 amino acid peptide derived from the proteolytic cleavage of amyloid precursor protein (APP) by beta-secretase (BACE1) and gamma-secretase. Its aggregation from soluble monomers into insoluble fibrillar plaques in the brain is the defining ne…
The process by which soluble amyloid-beta (Aβ) monomers assemble into neurotoxic oligomers and insoluble fibrillar plaques in the brain -- the defining neuropathological event of alzheimers disease. What distinguishes WikiBiome's treatment of this process from conventio…
Beta-lactamases are bacterial enzymes that hydrolyze the beta-lactam ring of penicillins, cephalosporins, and carbapenems, rendering them inactive. They are the most common mechanism of antibiotic resistance and a central concern in the antimicrobial resistance crisis. …
Defensins are small (29–45 amino acid) cationic antimicrobial peptides that form the first line of chemical defense at mucosal surfaces. Alpha-defensins (HD5, HD6) are produced by Paneth cells in the small intestinal crypts; beta-defensins (hBD1-4) are produced by epith…
Drug repurposing (also called drug repositioning) is the strategy of identifying new therapeutic uses for existing approved drugs. It dramatically accelerates the path from bench to bedside because safety, pharmacokinetics, and manufacturing are already established. In …
Membrane-spanning protein complexes that actively export substrates from the bacterial cell, using energy from ATP hydrolysis or the proton motive force. In the context of metal-microbiome biology, efflux pumps serve a dual role that has profound clinical consequences: …
Essential oils are volatile aromatic compounds extracted from plants, composed primarily of terpenes, phenylpropanoids, and their oxygenated derivatives. In the WikiBiome context, essential oils are relevant not as aromatherapy but as sources of bioactive molecules with…
Functional shielding is the phenomenon in which one microorganism — typically a fungus — physically and immunologically protects a co-resident pathogen from host immune attack, antimicrobial agents, and oxidative stress. The shielding organism's biofilm matrix acts as a…
Interleukin-17 (primarily IL-17A and IL-17F) is the signature cytokine of Th17 cells. At physiological levels, IL-17 maintains mucosal barrier defense by recruiting neutrophils and inducing antimicrobial peptide production. At pathological levels (Th17/Treg imbalance), …
IL-8 (CXCL8) is the primary neutrophil chemokine — it recruits neutrophils to infection sites and activates their antimicrobial functions (oxidative burst, degranulation, NET formation). In the WikiBiome context, IL-8 is notable for its vulnerability to gingipain degrad…
Interleukin-22 (IL-22) is an immune signaling protein that helps coordinate host responses at epithelial surfaces. In the gut evidence represented by WikiBiome, group 3 innate lymphoid cells (ILC3s) are a prominent source, while Th17-associated responses can also includ…
Mis-metallation is the displacement of the correct metal cofactor from an enzyme or protein by a wrong metal ion, leading to loss of function, gain of aberrant function, or structural disruption. This is one of the most fundamental and pervasive mechanisms of metal toxi…
Phage therapy uses bacteriophages — viruses that infect and lyse specific bacteria — as precision antimicrobials. Unlike broad-spectrum antibiotics, phages target specific bacterial species or strains, sparing the commensal microbiome. In the WikiBiome framework, phage …
Statins (HMG-CoA reductase inhibitors) are the most widely prescribed drug class globally, used primarily for cholesterol lowering and cardiovascular risk reduction. Over 200 million people take statins worldwide. Beyond their canonical mechanism of inhibiting cholester…
Vitamin D (calciferol; active form: calcitriol/1,25(OH)₂D₃) is a secosteroid hormone with profound immunomodulatory effects. The vitamin D receptor (VDR) is expressed on virtually all immune cells, and vitamin D deficiency is epidemiologically linked to autoimmune disea…