Related Experiment Video

Updated: Sep 20, 2025

Using Extraordinary Optical Transmission to Quantify Cardiac Biomarkers in Human Serum
09:23

Using Extraordinary Optical Transmission to Quantify Cardiac Biomarkers in Human Serum

Published on: December 13, 2017

6.4K

Understanding the circulating forms of cardiac troponin: insights for clinical practice

Panpan Lv1,2, Peng Zhang3, Yuxiang Dai1,4,5

  • 1Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Fudan University, Shanghai, P.R. China.

Clinical Chemistry and Laboratory Medicine
|May 29, 2025
PubMed

Insights

Cardiac troponin (cTn) levels can rise due to myocardial infarction (MI) or other conditions. Understanding the different forms of cTn in the blood is crucial for accurate diagnosis and treatment.

Area of Science:

  • Biochemistry
  • Cardiology
  • Clinical Diagnostics

Background:

  • Ischemic heart disease, particularly acute coronary syndrome (ACS), is a leading global cause of death and emergency hospital admissions.
  • Cardiac troponin I (cTnI) and cardiac troponin T (cTnT) are established biomarkers for diagnosing myocardial infarction (MI).
  • High-sensitivity cardiac troponin (hs-cTn) assays improve detection of low troponin concentrations but can be elevated in non-MI conditions.

Purpose of the Study:

  • To review research on circulating forms of cardiac troponin (cTn).
  • To explore mechanisms of cTn elevation in various pathophysiological states.
  • To discuss the clinical significance of cTn in conditions beyond MI, such as endurance exercise and chronic kidney disease.

Main Methods:

  • Literature review of studies on cardiac troponin isoforms and their detection.
  • Analysis of pathophysiological mechanisms leading to elevated cTn.
  • Examination of clinical data associating cTn levels with different medical conditions.

Main Results:

  • Cardiac troponin exists in heterogeneous forms in the bloodstream.
  • Elevated cTn levels can occur in conditions other than MI, posing diagnostic challenges.
  • Understanding cTn heterogeneity is clinically significant for accurate interpretation.

Conclusions:

  • Accurate characterization of circulating cTn forms is essential for reliable diagnosis.
  • Further research into cTn heterogeneity can improve diagnostic strategies.
  • Developing improved immunodetection methods for cTn is important.

Keywords:
cardiac troponin Icardiac troponin Tcirculating formsfragmenthigh-sensitivity cardiac troponin assaysmyocardial infarction

More Related Videos

Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training07:40

Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training

Published on: October 10, 2019

7.4K
A Sensitive and Specific Quantitation Method for Determination of Serum Cardiac Myosin Binding Protein-C by Electrochemiluminescence Immunoassay10:12

A Sensitive and Specific Quantitation Method for Determination of Serum Cardiac Myosin Binding Protein-C by Electrochemiluminescence Immunoassay

Published on: August 8, 2013

16.8K

Related Concept Videos

Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
355
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
26
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
226
Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
82
Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
33
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
54