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Related Concept Videos

Hypertension and Regulation of Blood Pressure01:18

Hypertension and Regulation of Blood Pressure

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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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Hormonal Regulation of Blood Pressure01:17

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Endocrinal or hormonal intervention in the cardiovascular system is predominantly exerted by the catecholamines - epinephrine and norepinephrine, as well as a slew of hormones that interact with renal function to modulate blood volume.
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction...
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Hormonal Regulation01:33

Hormonal Regulation

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The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
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Introduction to Urinary System01:13

Introduction to Urinary System

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The urinary system consists of two kidneys, two ureters, the urinary bladder, and the urethra.
The kidneys are bean-shaped organs located in the retroperitoneal space, on either side of the vertebral column, between the T12 and L3 vertebrae. They are partially protected by the rib cage and surrounded by perirenal fat, which provides cushioning. They are responsible for urine formation and play critical roles in regulating blood pressure, electrolyte levels, and hormone production. The ureters...
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Blood Pressure01:30

Blood Pressure

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Blood pressure (BP) is the pressure or force of blood exerted on the artery's walls as it circulates through the body. It is essential for maintaining blood flow throughout the body.
The average BP in an adult is typically around 120/80 mmHg (millimeters of mercury). In this measurement, the numerator (120) indicates the systolic pressure, which is the pressure in the arteries during the contraction of the heart's ventricles as blood is expelled. The denominator (80) represents the...
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Neural Regulation of Blood Pressure01:18

Neural Regulation of Blood Pressure

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The neural regulation of blood pressure involves intricate interactions between the autonomic nervous system (ANS) and cardiovascular system, ensuring adequate perfusion of tissues. This regulation primarily occurs through baroreceptor and chemoreceptor reflexes, involving both short-term and long-term mechanisms.
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Renal Tubule Cell-Specific <i>Npr1</i> is Essential to Regulate Blood Pressure and Kidney Dysfunction.

Hypertension (Dallas, Tex. : 1979)·2026
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Epigenetic mechanisms differentially regulate blood pressure and renal dysfunction in male and female Npr1 haplotype mice.

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Podocyte cell-specific <i>Npr1</i> is required for blood pressure and renal homeostasis in male and female mice: role of sex-specific differences.

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Related Experiment Video

Updated: Jun 29, 2025

Assessing Murine Resistance Artery Function Using Pressure Myography
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Assessing Murine Resistance Artery Function Using Pressure Myography

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Genetic and Epigenetic Mechanisms Regulating Blood Pressure and Kidney Dysfunction.

Kailash N Pandey1

  • 1Department of Physiology, Tulane University Health Sciences Center, School of Medicine, New Orleans, LA.

Hypertension (Dallas, Tex. : 1979)
|March 28, 2024
PubMed
Summary

Dr. Lewis K. Dahl

Area of Science:

  • Genetics and Epigenetics
  • Nephrology
  • Cardiovascular Disease

Background:

  • High blood pressure (BP) is a heritable trait influenced by genetics and environment.
  • It is a major risk factor for renal, cardiovascular, and cerebrovascular diseases.
  • Understanding BP regulation is crucial for public health.

Purpose of the Study:

  • To review genetic variants, mutations, and epigenetic factors impacting BP.
  • To explore their role in hypertension and kidney dysfunction.
  • To highlight molecular mechanisms underlying hypertension.

Main Methods:

  • Review of genome-wide association studies (GWAS).
  • Analysis of genetic variants and single nucleotide polymorphisms (SNPs).
  • Examination of epigenetic reprogramming and gene expression changes.
Keywords:
DNA methylationblood pressurehistone codehypertensionpolymorphisms, genetic

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Two-photon Imaging of Intracellular Ca2+ Handling and Nitric Oxide Production in Endothelial and Smooth Muscle Cells of an Isolated Rat Aorta
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Related Experiment Videos

Last Updated: Jun 29, 2025

Assessing Murine Resistance Artery Function Using Pressure Myography
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A Modified Two Kidney One Clip Mouse Model of Renin Regulation in Renal Artery Stenosis
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Main Results:

  • GWAS have identified numerous genetic variants influencing BP.
  • Specific genetic and epigenetic factors are linked to hypertension.
  • These factors alter gene expression, affecting BP regulation and kidney function.

Conclusions:

  • Genetic and epigenetic factors play a significant role in hypertension.
  • Understanding these molecular mechanisms is key to managing BP and kidney disease.
  • Further research into these pathways can inform therapeutic strategies.