Lexicon

A precise index of biological, molecular, and longevity terms used across our decoded entries.

Terms with a blue checkmark have been verified by human medical experts. Terms marked "Pending Verification" are AI-compiled drafts.

A

AMPK

AMP-activated protein kinase; a conserved master energy sensor that regulates glucose and lipid meta...

APOE4

Apolipoprotein E4; the strongest genetic risk factor allele for sporadic Alzheimer's disease, linked...

ATP

Adenosine triphosphate; the primary chemical energy currency within cells, synthesized by mitochondr...

Alternate Day Fasting

A dietary protocol alternating between 24-hour periods of ad libitum eating and 24-hour periods of c...

all-cause mortality

The death rate from any cause in a specified population over a defined period, used as a primary val...

alveolar bone resorption

The pathological osteoclast-mediated breakdown and loss of the alveolar jawbone surrounding teeth, d...

amino acid

A small organic compound containing both an amino and a carboxyl group, acting as the fundamental mo...

amyloid-beta

A protein peptide that can accumulate in the brain, forming sticky plaques associated with neurodege...

anabolism

The metabolic synthesis of complex molecules from simpler precursors, requiring chemical energy inpu...

anaerobic

Relating to, requiring, or living in an environment that is entirely free of oxygen.

antioxidant

A molecule capable of neutralizing reactive oxygen species (ROS) and free radicals, thereby protecti...

apoptotic

Relating to apoptosis; the programmed cell death pathway that safely eliminates damaged or obsolete...

atuzaginstat

COR388; an experimental, brain-penetrant small-molecule inhibitor of Porphyromonas gingivalis Lys-gi...

autoimmune pathology

A state of disease where the immune system mistakenly targets and destroys the body's own healthy ce...

autophagy

An evolutionary conserved lysosomal degradation pathway that recycles damaged organelles, misfolded...

axons

The long, slender projection of a neuron that conducts electrical impulses (action potentials) away...

B

biochemical

Relating to the chemical processes, compounds, and pathways occurring within living organisms.

blood-brain barrier

A highly selective semipermeable membrane border of endothelial cells that prevents solutes in the c...

C

cardiorespiratory fitness

The capacity of the respiratory and circulatory systems to supply oxygen to working muscles during s...

catabolism

The metabolic breakdown of complex molecules into simpler ones, releasing chemical energy (ATP).

catalytic

Relating to catalysis; the process of accelerating a chemical reaction rate by lowering the activati...

cell viability

A measure of the proportion of live, healthy, and functionally active cells within a given populatio...

cerebrospinal fluid

Cerebrospinal fluid; the clear fluid surrounding the brain and spinal cord, acting as a physical cus...

chronic

A condition or pathological state that persists over a long period (typically months or years) and i...

coenzyme

A non-protein organic cofactor required by specific enzymes to carry out catalytic activities, often...

cognitive function

The neurological processes of memory, attention, executive control, and reasoning, mediated by synap...

colibactin

A genotoxic chemical metabolite produced by Escherichia coli strains carrying the *pks* pathogenicit...

colorectal cancer

A malignancy originating in the colon or rectum, increasingly observed as sporadic early-onset cases...

covalent

A strong chemical bond formed by the sharing of one or more pairs of electrons between atoms.

cysteine

A sulfur-containing semi-essential amino acid critical for protein folding via disulfide bonds and a...

cytoprotective

Physiological processes or compounds that shield cells from noxious agents, oxidative stress, or apo...

cytoskeleton

A dynamic network of protein filaments (including microtubules) that provides structural support, sh...

D

DHA

Docosahexaenoic acid; a long-chain omega-3 polyunsaturated fatty acid essential for brain structure,...

DNA

Deoxyribonucleic acid; the double-stranded helical molecule containing the genetic instructions gove...

degradation pathway

A regulated biochemical pipeline (such as autophagy or proteasomal clearance) designed to break down...

dementia

A clinical syndrome characterized by a progressive decline in cognitive function, memory, and daily...

detoxification

The physiological conversion and elimination of toxic endogenous metabolites or xenobiotic compounds...

downregulate

The process by which a cell decreases the response, rate, or gene expression of a gene, protein, or...

dysbiotic oral plaque

A pathological oral biofilm where pathogenic bacteria like Porphyromonas gingivalis dominate, trigge...

E

EGCG

Epigallocatechin gallate; the primary green tea polyphenol under investigation for modulating AMPK s...

endogenous

Originating or synthesized internally within an organism, tissue, or cell rather than introduced fro...

enzymes

Biological catalysts (usually proteins) that significantly accelerate the rate of specific biochemic...

epidemiological studies

Research observing the distribution, patterns, and determinants of health and disease conditions in...

F

FMT

Fecal Microbiota Transplant; the transfer of a processed microbiota ecosystem from a healthy donor i...

folate

Vitamin B9; an essential coenzyme cofactor in one-carbon metabolism synthesized by gut bacteria, cri...

free radicals

Atoms or molecules with an unpaired valence electron, making them highly reactive and capable of ind...

G

GRADE

Grading of Recommendations, Assessment, Development, and Evaluation; a standardized framework for ra...

gene

A specific sequence of DNA nucleotides containing the genetic instructions required to synthesize a...

gene expression

The multi-step process by which information encoded in a gene is synthesized into functional protein...

gingipains

Toxic cysteine protease enzymes secreted by Porphyromonas gingivalis that degrade neuronal proteins,...

gut dysbiosis

An imbalance or maladaptive alteration in the composition, diversity, or functional activity of the...

gut-brain axis

The bidirectional biochemical communication network linking the gastrointestinal tract and its resid...

H

healthspan

The period of life spent free from chronic disease, disability, and functional decline.

homocysteine

A sulfur-containing amino acid intermediary in folate and methionine metabolism, whose accumulation...

I

insulin resistance

A physiological condition where cells fail to respond effectively to the hormone insulin, impairing...

intracellular

Occurring, located, or operating entirely within the boundary of a cell membrane.

K

kinase

An enzyme that catalyzes the transfer of a phosphate group from ATP to a specific substrate molecule...

L

lipid peroxidation

The oxidative degradation of lipids in membranes, where free radicals abstract electrons from lipids...

lysosomal

Relating to lysosomes; acidic cellular organelles containing digestive enzymes responsible for degra...

M

MRI

Magnetic Resonance Imaging; a non-invasive medical imaging technique that uses strong magnetic field...

membrane

A selective lipid bilayer boundary wrapping cells and organelles, maintaining homeostasis and regula...

metabolic syndrome

A cluster of metabolic dysregulations (insulin resistance, high blood pressure, abdominal obesity) t...

metabolism

The complete set of life-sustaining chemical reactions in cells, including catabolism (energy releas...

metabolite

Any small-molecule intermediate or end-product synthesized during cellular metabolism, acting as ene...

methionine

An essential sulfur-containing amino acid that acts as a fundamental initiator of protein translatio...

microbiota

The collective community of microorganisms (bacteria, fungi, archaea, and viruses) residing within a...

microglia

The resident macrophage-like immune cells of the central nervous system, responsible for clearing de...

microtubule

Tubular cytoskeletal structures composed of tubulin dimers, essential for maintaining cell shape, en...

misfolded proteins

Proteins that have failed to fold into their correct 3D shape, rendering them non-functional and pro...

mitochondria Pending Verification

Double-membrane-bound organelles found in most eukaryotic organisms, responsible for generating aden...

myelin sheath

An insulating layer of lipids and proteins wrapped around nerve fibers (axons) that accelerates acti...

N

NAD+

Nicotinamide adenine dinucleotide; an essential coenzyme present in all living cells, acting as a cr...

Nrf2

Nuclear factor erythroid 2-related factor 2; a Nuclear factor that coordinates the gene expression o...

Nuclear factor

A DNA-binding transcription factor protein that translocates to the cell nucleus to control transcri...

neurodegeneration

The progressive structural and functional loss of neurons, culminating in cognitive function decline...

neurofibrillary

Relating to neurofibrillary tangles; pathological aggregates of hyperphosphorylated tau protein foun...

neuroinflammation

An inflammatory response within the brain or spinal cord, characterized by the activation of microgl...

neurons

Electrically excitable cells of the nervous system specialized for receiving, processing, and transm...

noxious

Physiologically harmful, destructive, or toxic to living cells and tissues.

nucleus

The membrane-bound organelle within eukaryotic cells hosting the DNA chromosomes and coordinating ge...

O

oligodendrocytes

Specialized glial cells of the central nervous system that wrap around axons to form the insulating...

omega-3 fatty acids

A family of polyunsaturated fatty acids (including DHA and EPA) essential for structural integrity,...

organelles

Specialized, membrane-bound cellular structures (e.g. mitochondria, lysosomes) that perform distinct...

organosulfur

Organic chemical compounds containing sulfur atoms, found in foods like garlic and broccoli, known f...

oxidative stress

An imbalance between the production of reactive oxygen species (ROS) and cellular antioxidant defens...

P

Porphyromonas gingivalis

A gram-negative, anaerobic oral pathogen and keystone species in chronic periodontitis, linked to sy...

pathogen

Any microorganism (bacteria, virus, fungus, or parasite) capable of causing disease or chronic infla...

pathogenicity

The qualitative ability of a pathogen to infect a host, evade immunological defenses, and cause stru...

pathology

The structural and functional deviations from the normal physiological state, characterizing disease...

pathway

A linked series of biochemical reactions occurring within a cell, activated by specific triggers to...

periodontitis

A chronic inflammatory gum disease driven by dysbiotic oral plaque, resulting in alveolar bone resor...

phenol rings

A chemical structure consisting of a hydroxyl group bonded directly to an aromatic benzene ring, fou...

phosphate

An inorganic chemical group consisting of a phosphorus atom bonded to four oxygen atoms, utilized to...

phosphatidylcholine

A class of phospholipids incorporating choline, forming a major structural component of cell membran...

phosphorylation

A reversible biochemical modification where a phosphate group is covalently attached to a protein, r...

physiological

Relating to the normal, healthy functioning of living organisms and their organs, tissues, or cells.

placebo

An inactive substance or procedure designed to mimic the experimental treatment, used as a control i...

polyphenol

A structurally diverse class of natural plant compounds characterized by multiple phenol rings, wide...

protein

A large biomolecule composed of one or more amino acid chains folded into a specific 3D structure th...

protein folding

The physical process by which a polypeptide chain folds into its functional 3D conformation from its...

R

RNA

Ribonucleic acid; a single-stranded nucleic acid molecule synthesized from DNA that acts as a templa...

randomized controlled trial

Randomized Controlled Trial; a gold-standard clinical study design where participants are randomly a...

reactive oxygen species

Highly reactive oxygen-containing chemicals (such as hydrogen peroxide and superoxide) that can dama...

resveratrol

A dietary polyphenol found in red grape skins that acts as an activator of the SIRT1 deacetylase, mi...

S

SIRT1

Sirtuin 1; an NAD+-dependent protein deacetylase that acts as a key metabolic sensor regulating chro...

statistical difference

A mathematical determination that a measured difference between experimental groups is unlikely to h...

stroke volume Pending Verification

The volume of blood pumped out of the left ventricle of the heart during a single cardiac contractio...

sulforaphane

An organosulfur compound found in cruciferous vegetables that acts as a potent indirect antioxidant...

sulfur

A chemical element (S) essential for life, acting as a crucial component of amino acids (cysteine an...

synthesized

The biological or chemical production of complex compounds (such as proteins or metabolites) from si...

T

tau

A microtubule-associated protein synthesized in neurons that stabilizes axonal structures, whose hyp...

U

upregulate

The process by which a cell increases the response, rate, or gene expression of a gene, protein, or...

V

VO2 max

The maximal rate of oxygen consumption measured during incremental exercise, reflecting aerobic phys...

Vitamin B12

Cobalamin; a complex water-soluble vitamin synthesized exclusively by bacteria, acting as a coenzyme...

X

xenobiotic

A chemical compound (such as a drug, toxin, or pesticide) that is foreign to a biological system and...

xenohormesis

The hypothesis that animals have evolved to respond to stress-induced chemical signals synthesized b...