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Related Concept Videos

Alterations in Blood Pressure01:30

Alterations in Blood Pressure

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Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart...
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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 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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Factors affecting Blood pressure01:28

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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.
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Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu01:29

Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

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Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...
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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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Related Experiment Video

Updated: Mar 28, 2026

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
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Rare Exome Sequence Variants in CLCN6 Reduce Blood Pressure Levels and Hypertension Risk.

Bing Yu, Sara L Pulit, Shih-Jen Hwang

    Circulation. Cardiovascular Genetics
    |December 15, 2015
    PubMed
    Summary

    Rare genetic variants in CLCN6 significantly lower blood pressure (BP) and reduce hypertension risk. This study highlights the role of rare coding variants in BP regulation.

    Keywords:
    blood pressureexomegenetic variationgenome-wide association studyhypertension

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    Area of Science:

    • Genetics
    • Cardiovascular Science
    • Human Physiology

    Background:

    • Blood pressure (BP) regulation is influenced by genetic factors.
    • Rare genetic variants are increasingly recognized for their impact on complex traits like BP.

    Purpose of the Study:

    • To investigate the effect of rare genetic variants on hypertension and key blood pressure parameters.
    • To identify specific genes and variants associated with BP variation.

    Main Methods:

    • Whole-exome sequencing of 17,956 individuals (European and African ancestry).
    • Analysis of common and rare variants for association with systolic BP, diastolic BP, pulse pressure, and mean arterial pressure.
    • Multiethnic meta-analyses to confirm findings.

    Main Results:

    • Rare coding variants in the CLCN6 gene were associated with lower diastolic BP, systolic BP, and mean arterial pressure.
    • CLCN6 rare variants were also linked to a reduced risk of hypertension.
    • These associations were independent of previously identified common variants.

    Conclusions:

    • Rare coding variants in CLCN6 play a significant role in blood pressure variation.
    • These findings provide novel insights into the genetic mechanisms of BP regulation.