Tests for:
Gene variations associated with metabolic and biological processes
Analytes measured:
Lipid Metabolism
LPL: Removes lipids from the circulation by hydrolysing triglycerides into free fatty acids.
CETP: Plays a key role in the metabolism of HDL and mediates the exchange of lipids between lipoproteins.
APOC3: Plays an important role in cholesterol metabolism.
APOE: Is essential for the normal catabolism of triglyceride-rich lipoprotein constituents. Affects antioxidant requirement.
PON1: Low serum PON activity has been associated with increased risk for coronary artery disease.
B Vitamins/Methylation
MTHFR: Directs folate from the diet either to DNA synthesis or homocysteine re-methylation.
MTR: Catalyses the re-methylation of homocysteine to methionine.
COMT: Catalyses the transfer of a methyl group from S-adenosylmethionine to catecholamines, including the neurotransmitters dopamine, epinephrine, and norepinephrine.
MTRR: Catalyses methylcobalamin, which is essential for maintaining adequate intracellular pools of methionine. It is also responsible for maintaining homocysteine concentrations at non-toxic levels.
CBS: Catalyses the conversion of homocysteine to cystathionine and is directly involved in the removal of homocysteine from the methionine cycle.
Detoxification
CYP1A1: The cytochrome P450 enzyme converts environmental pro-carcinogens to reactive intermediates, which are carcinogenic.
GSTM1: Influences Phase II detoxification. It is responsible for the removal of xenobiotics, carcinogens, and products of oxidative stress.
GSTP1: Influences the metabolism of many carcinogenic compounds.
GSTT1: A member of a super family of proteins that catalyses the conjugation of reduced glutathione.
NQO1: Quinone Reductase is primarily involved in the detoxification of potentially mutagenic and carcinogenic quinones derived from tobacco smoke, diet and oestrogen metabolism.
Inflammation
IL-6: Plays a crucial role in inflammation by regulating the expression of C reactive protein (CRP).
TNF-A: TNFa is a pro-inflammatory cytokine, secreted by both macrophages and adipocytes, which has been shown to alter whole body glucose homeostasis, and has been implicated in the development of obesity, obesity-related insulin resistance and dyslipidemia.
IL-1: Certain genetic variations in IL-1A, IL-B and IL-1 RN lead to a more active inflammatory response, and have been associated with increased risk for a number of chronic diseases.
Food Responsiveness and Sensitivity
MCM6: Associated with adult hypolactasia.
FADS1: Influences blood fat concentrations by affecting desaturase enzyme efficiency.
CYP1A2: This detoxification enzyme influences the ability to metabolise caffeine.
ACE & AGT: Part of the renin-angiotensin system and response to salt.
TAS2R38: TAS2R38 encodes the taste receptor responsible for the sensitivity to bitter compounds.
Iron Overload
HFE: Regulates iron absorption by regulating the interaction of the transferring receptor with transferrin. Hereditary haemochromatosis results from defects in the HFE gene.
Oxidative Stress
eNOS: Influences vascular tone and peripheral vascular resistance. It also has vaso-protective effects by suppressing platelet aggregation, leukocyte adhesion and smooth muscle cell proliferation.
MnSOD/SOD2: Has vital anti-oxidant activity within the cell, especially within the mitochondria. It destroys the radicals that are normally produced within cells.
CAT: Decreased CAT activity leads to increased concentrations of hydrogen peroxide, hence leading to increased oxidative stress.
GPX: Glutathione peroxidase 1 (GPx1) is the most abundant of the selenoperoxidase enzymes and helps to maintain redox balance.
Bone Health
VDR: Has a profound influence on bone density.
COL1A1: Influences the ratio of collagen-alpha chains produced by bone cells, affecting bone mineralisation of bone and bone strength.
Insulin Sensitivity
PPARG: Involved in adipocyte differentiation. It is a transcription factor activated by fatty acids, and is also involved in the regulation of glucose and lipid metabolism.
TCF7L2: Influences blood glucose homeostasis – both insulin secretion and resistance.
FTO: Influences susceptibility to obesity and risk for type 2 diabetes.
SLC2A2: Facilitates glucose induced insulin secretion and is involved in food intake and regulation.