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Related Concept Videos

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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.
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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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Liddle syndrome is a genetically inherited form of hypertension characterized by the overactivity of epithelial sodium channels in the nephron, the functional unit of the kidney. This heightened activity leads to increased sodium reabsorption and excessive excretion of potassium. To counteract this, potassium-sparing diuretics such as amiloride are used. They function by blocking these sodium channels, thereby reducing the influx of sodium into the epithelial cells and minimizing the loss of...
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Angiotensin-converting enzyme (ACE), a vital component of the renin-angiotensin-aldosterone system, is abundant in lung endothelial cells. ACE converts the inactive decapeptide, angiotensin I, into the active octapeptide, angiotensin II. This potent vasoconstrictor narrows blood vessels, increasing resistance to blood flow and elevating blood pressure. Angiotensin II also stimulates aldosterone production, encouraging kidney cells to reabsorb more sodium and water from urine, thereby increasing...
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The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...
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Related Experiment Video

Updated: Jul 1, 2026

Direct Detection of Isolevuglandins in Tissues Using a D11 scFv-Alkaline Phosphatase Fusion Protein and Immunofluorescence
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Direct Detection of Isolevuglandins in Tissues Using a D11 scFv-Alkaline Phosphatase Fusion Protein and Immunofluorescence

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Elevated isoleucine may be a protective factor for primary hypertension: A pooled causal effect study.

Ying Shi1, Hairun Liu2, Yi Chen3

  • 1Department of Cardiology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.

Medicine
|February 28, 2025
PubMed
Summary

This study used Mendelian randomization to explore the link between metabolism and primary hypertension (PH). Elevated isoleucine shows potential as a protective factor and biomarker for PH across diverse populations.

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Last Updated: Jul 1, 2026

Direct Detection of Isolevuglandins in Tissues Using a D11 scFv-Alkaline Phosphatase Fusion Protein and Immunofluorescence
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The Antihypertensive Effects and Mechanisms of Huotan Jiedu Tongluo Decoction in Rats with H-Type Hypertension
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The Antihypertensive Effects and Mechanisms of Huotan Jiedu Tongluo Decoction in Rats with H-Type Hypertension

Published on: May 17, 2024

Area of Science:

  • Genetics and Metabolomics
  • Cardiovascular Epidemiology
  • Public Health

Background:

  • Hypertension is a major global health concern, with abnormal metabolism contributing to its development and progression.
  • Large-scale causal evidence linking metabolism to primary hypertension (PH) is currently limited.
  • Understanding these metabolic links is crucial for developing new diagnostic and therapeutic strategies.

Purpose of the Study:

  • To investigate the causal relationship between serum metabolites and primary hypertension (PH) using Mendelian randomization.
  • To identify predictive metabolites and metabolic pathways for PH diagnosis or treatment across diverse populations.
  • To assess the potential of specific metabolites as biomarkers for PH.

Main Methods:

  • Utilized Mendelian randomization analysis with genome-wide association study (GWAS) data.
  • Integrated PH diagnosis data from East Asian, Middle Eastern, and African populations with metabolomics data.
  • Employed inverse-variance weighting for causal association analysis, alongside pleiotropy and sensitivity tests.

Main Results:

  • Identified numerous metabolites associated with PH across East Asian, Middle Eastern, and African populations (36, 57, and 40, respectively).
  • Cross-ethnic meta-analysis revealed 7 common metabolites associated with PH.
  • Elevated isoleucine demonstrated a protective effect against PH (OR=0.74, 95% CI: 0.56-0.96) across all three groups.

Conclusions:

  • Metabolites associated with PH exhibit population-specific genetic polymorphisms.
  • Isoleucine emerges as a potential biomarker for PH diagnosis and treatment, warranting further clinical validation.
  • This study provides large-scale causal evidence for the role of metabolism in primary hypertension.