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Related Concept Videos

Human Genetics01:28

Human Genetics

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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
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Hypertension and Regulation of Blood Pressure01:18

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Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
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Hypertension II: Pathophysiology01:29

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Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
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Hypertension I: Introduction01:28

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Hypertension is a widespread, long-term medical condition where blood pressure in the arteries remains elevated. It is characterized by systolic blood pressure readings of 130 mm Hg or above or diastolic blood pressure (DBP) readings of 80 mm Hg or higher. Unmanaged hypertension poses significant health risks, making the distinction between primary (or essential) hypertension and secondary hypertension crucial, as their management and implications vary.Primary HypertensionPrimary hypertension,...
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Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

Hypertension III: Clinical Manifestations and Diagnostic Studies

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Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
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Factors affecting Blood pressure01:28

Factors affecting Blood pressure

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Several physiological and lifestyle factors influence blood pressure (BP). Understanding these factors is crucial as they are significant in patient education and blood pressure management.
Physiological Factors:
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Hypertension genetics past, present and future applications.

Kaya J Olczak1, Victoria Taylor-Bateman1, Hannah L Nicholls1,2

  • 1Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.

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Summary

Genetic discoveries have identified over 1000 blood pressure loci, enabling genetic risk scores for hypertension stratification and aiding drug discovery for better cardiovascular and renal disease prevention.

Keywords:
drug targetsepigeneticsessential hypertensiongene x environmentgenetic risk scoregenome-wide association study

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Area of Science:

  • Genetics and Precision Medicine
  • Cardiovascular and Renal Disease Research

Background:

  • Essential hypertension is a complex trait with incompletely understood etiology, increasing risks for cardiovascular and renal diseases.
  • Genome-wide association studies have identified over 1000 blood pressure loci, explaining approximately 6% of heritability.

Purpose of the Study:

  • To review key studies in hypertension genetics, highlighting current research and future directions.
  • To discuss gene discovery, epigenetics, gene-environment interactions, genetic risk scores (GRSs), and drug discovery for hypertension.
  • To evaluate limitations, including ancestry bias, and propose streamlined approaches for precision medicine in hypertension.

Main Methods:

  • Review of published genome-wide association studies and genetic research in hypertension.
  • Analysis of identified blood pressure loci and their contribution to heritability.
  • Evaluation of the development and application of genetic risk scores (GRSs) for disease stratification and drug response prediction.

Main Results:

  • Over 1000 blood pressure loci identified, contributing to understanding hypertension heritability.
  • Genetic risk scores (GRSs) demonstrate significant differences in systolic blood pressure and risks for hypertension, stroke, cardiovascular disease, and myocardial infarction.
  • Identification of novel drug targets (e.g., NPR1, EDNRA) and drug repurposing opportunities (e.g., canagliflozin).

Conclusions:

  • Hypertension gene discovery has provided crucial pathological insights and drug discovery opportunities.
  • Genetic risk scores (GRSs) are valuable for population risk stratification and are being trialed for predicting antihypertensive drug responses.
  • Future research focusing on gene discovery, epigenetics, gene-environment interactions, and GRSs will advance tailored precision medicine for hypertension.