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Related Concept Videos

Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

Mitral Stenosis II: Clinical features and Diagnostic Tests

Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...

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Related Experiment Video

Updated: Jun 12, 2026

Optimized Protocol for the Extraction of Proteins from the Human Mitral Valve
09:13

Optimized Protocol for the Extraction of Proteins from the Human Mitral Valve

Published on: June 14, 2017

Valvular aortic stenosis: a proteomic insight.

Felix Gil-Dones1, Tatiana Martin-Rojas, Luis F Lopez-Almodovar

  • 1Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos (HNP), SESCAM, Toledo.

Clinical Medicine Insights. Cardiology
|June 23, 2010
PubMed
Summary
This summary is machine-generated.

Researchers developed a new proteomic analysis method for calcified aortic valves, overcoming challenges posed by high calcium concentrations. This technique enables detailed study of aortic stenosis, advancing understanding of this cardiovascular condition.

Keywords:
aortic stenosishuman aortic valvesproteomics

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Last Updated: Jun 12, 2026

Optimized Protocol for the Extraction of Proteins from the Human Mitral Valve
09:13

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Published on: June 14, 2017

Protein Isolation from the Developing Embryonic Mouse Heart Valve Region
06:55

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Published on: September 23, 2014

A Minimally Invasive Model of Aortic Stenosis in Swine
06:51

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Area of Science:

  • Cardiovascular Biology
  • Proteomics
  • Biochemistry

Background:

  • Calcified aortic valve disease progresses from aortic sclerosis to severe aortic stenosis.
  • Aortic stenosis (AS) was historically viewed as passive calcium deposition.
  • Emerging evidence links AS risk factors to coronary artery disease and suggests an inflammatory basis similar to atherosclerosis.

Purpose of the Study:

  • To develop a rapid, reproducible, and effective protein extraction protocol for proteomic analysis of stenotic human aortic valves.
  • To overcome challenges associated with high calcium concentrations in valve tissue.
  • To enable detailed proteomic analysis of aortic stenosis to advance understanding of its mechanisms.

Main Methods:

  • Conventional 2-DE (two-dimensional gel electrophoresis) and 2D-DIGE (differential gel electrophoresis).
  • A novel protein extraction protocol designed to minimize calcium interference.
  • Mass spectrometry (MS) compatibility for comprehensive proteomic analysis.

Main Results:

  • A rapid, reproducible, and effective method for protein extraction from stenotic human aortic valves was established.
  • The protocol effectively minimizes interference from high calcium concentrations.
  • The method is compatible with 2-DE, 2D-DIGE, and MS techniques, facilitating proteomic analysis.

Conclusions:

  • The developed protocol enables effective proteomic analysis of aortic stenosis valves.
  • This advancement will contribute to a deeper understanding of the physiological and pathological processes underlying aortic stenosis.
  • Further research is needed to fully elucidate the complex mechanisms of calcified aortic valve disease.