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…pathway Dr. Purser connects T-cell activity, IFN-gamma, TNF-alpha, and related immune pathways with damage to affected tissue. He also discusses oxidative stress and the difference between localized symptoms and wider immune activity. Brin…

…erent patterns. Follow the pathway Dr. Purser connects TNF-alpha, IL-1 beta, IL-6, and T-cell pathways with local tissue inflammation. He emphasizes that inflammatory signaling differs with the underlying condition, which is why symptoms a…

…thway Dr. Purser connects chemokines such as IL-8, CCL2/MCP-1, and CCL4 with Th1/Th17 signaling and cytokines including TNF-alpha, IL-6, and IL-1 beta. He discusses the interaction of immune-cell recruitment and tissue injury. Bring these …

…e in the body. Follow the pathway Dr. Purser discusses TNF-alpha, IL-6, IL-1 family signals, and Th17/Th22 pathways in eye inflammation. The degree of eye disease cannot be inferred simply from whether a common genetic finding is heterozyg…

…ry region of the TNF gene. Understand the connection TNF rs1800629 is a promoter-region variant, commonly described as -308 G>A. A promoter helps regulate gene activity, but a genotype is not the same as a measured cytokine concentration. …

…of inflammatory signaling. Understand the connection TNF rs1799724 is another promoter-region variant, commonly described as -857 C>T. It is distinct from rs1800629, even though both appear in TNF-alpha discussions. Follow the pathway Dr.…

…ome stuck. Follow the pathway Dr. Purser discusses IL-4/IL-13 signaling, eosinophils, and the IL-4 receptor alpha target of dupilumab. He considers oxidative stress alongside approaches such as dietary evaluation and prescribed treatment. …

…nt gene. Also called: DAO, Amine Oxidase, Copper Containing 1, Diamine Oxidase Histamine: making it, responding to it, clearing it Dr. Purser’s genetics reference places AOC1 in the histamine-clearance part of the gut and immune story. The …

ATG16L1 is involved in autophagy, a process that helps cells recycle parts. Also called: Autophagy-Related 16-Like 1 Cellular recycling meets gut immunity ATG16L1 is involved in autophagy, a process that helps cells recycle parts. It is stu…

BCO1, also called BCMO1, helps convert beta-carotene from plant foods into retinal, a form used in vitamin A metabolism. Plant carotenoids and preformed vitamin A therefore enter the pathway at different points. Also called: BCMO1, Beta-Car…

BRCA1 helps repair damaged DNA. Clinically classified pathogenic variants can affect inherited cancer risk; a common SNP or a variant of uncertain significance is a different finding. Also called: Breast Cancer 1 DNA repair and inherited ca…

…n fatty-acid metabolism. Also called: Fatty Acid Desaturase 1 / D5D The form of a fatty acid matters Dr. Purser teaches FADS genes as a conversion pathway. FADS1 participates in a delta-5 desaturase step in fatty-acid metabolism. This is wh…