Related Experiment Video
Updated: Mar 6, 2026

Author Spotlight: Exploring Huotan Jiedu Tongluo Decoction as an Antihypertensive Drug
Published on: May 17, 2024
Genetic Variations of Tyrosine Hydroxylase in the Pathogenesis of Hypertension
Yu Ho Lee1, Yang Gyun Kim1, Ju-Young Moon1
1Division of Nephrology, Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, Korea.
Insights
Genetic variations in tyrosine hydroxylase (TH), an enzyme crucial for catecholamine synthesis, may influence sympathetic nervous system activity and contribute to primary hypertension development. Further research is needed to understand this link.
Area of Science:
- Biochemistry
- Genetics
- Cardiovascular Physiology
Background:
- Primary hypertension is linked to overactive sympathetic nervous system activity.
- This overactivity involves excessive catecholamine synthesis and secretion.
- Tyrosine hydroxylase (TH) is a key enzyme regulating catecholamine production.
Purpose of the Study:
- To explore the role of tyrosine hydroxylase (TH) in regulating sympathetic nervous system activity.
- To review existing studies on the association between genetic variations in the TH gene and hypertension.
- To understand the potential contribution of TH genetic variations to hypertension pathogenesis.
Main Methods:
- Literature review of studies investigating tyrosine hydroxylase (TH).
- Analysis of research examining genetic variations in the TH gene.
- Correlation analysis between TH gene polymorphisms and hypertension incidence/severity.
Main Results:
- Tyrosine hydroxylase (TH) plays a critical role in catecholamine synthesis, impacting sympathetic tone.
- Several genetic variations within the TH gene have been identified.
- Some studies suggest a correlation between specific TH polymorphisms and altered hypertension risk or severity.
Conclusions:
- Tyrosine hydroxylase (TH) is a significant regulator of sympathetic activity.
- Genetic variations in TH may represent a contributing factor to the development of primary hypertension.
- Further investigation into TH genetics is warranted for a comprehensive understanding of hypertension pathophysiology.
Abstract:
One of the major pathophysiological features of primary hypertension is an inappropriate activation of the sympathetic nervous system, which is mediated by excessive synthesis and secretion of catecholamine into the blood. Tyrosine hydroxylase (TH), a rate-limiting enzyme in the synthesis of catecholamine, has been highlighted because genetic variations of TH could alter the activity of the sympathetic nervous system activity and subsequently contribute to the pathogenesis of hypertension. Here, we discuss the role of TH as a regulator of sympathetic activity and review several studies that investigated the relationship between genetic variations of TH and hypertension.
Related Concept Videos
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Hypertension II: Pathophysiology
Human Genetics
The complex relationship between genetics and psychology is observable through common biological components such...
Hypertension and Regulation of Blood Pressure
Principles of Pharmacogenetics: Types of Genetic Variants

