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Updated: Jun 2, 2026

A Semi-Automated and Reproducible Biological-Based Method to Quantify Calcium Deposition In Vitro
Published on: June 2, 2022
[Coronary artery necroses and calcification in chronic ischemic heart disease]
Insights
Coronary artery calcification (CAC) mechanisms were studied in 150 patients. Two CAC types were identified: one linked to plaque masses, another to fibrous plaque necroses, typical in chronic coronary heart disease (CHD).
Area of Science:
- Cardiovascular Pathology
- Atherosclerosis Research
Background:
- Coronary artery calcification (CAC) is a hallmark of coronary heart disease (CHD).
- Mechanisms of CAC development, particularly those independent of atherosclerotic plaque calcification, require further investigation.
Purpose of the Study:
- To elucidate inadequately studied mechanisms of coronary artery calcification (CAC).
- To differentiate CAC types and their association with atherosclerotic plaque characteristics in chronic CHD.
Main Methods:
- Pathomorphological analysis of endarterectomized coronary artery (CA) segments from 150 patients (aged 49-72) with CHD.
- Identification and characterization of two distinct types of CAC based on their association with atherosclerotic plaques.
Main Results:
- CAC was prevalent (92%) in the studied CA segments.
- Two CAC types were observed: associated with calcified atheromatous masses and related to necroses in fibrous plaque regions.
- Lamellar calcification, often linked to plaque instability (23.3% of cases), was associated with fibrous plaque necroses in chronic CHD.
Conclusions:
- Calcification within necrotic areas of fibrous plaque parts is characteristic of chronic CHD.
- This type of calcification frequently presents as large-focal deposits, forming lamellar structures (lamellar calcification).
- Impaired transmural plasma perfusion is implicated in the development of necroses within stenotic CA atherosclerotic plaques.
Aim:
To study some particularly inadequately studied mechanisms for the development of coronary artery calcification (CAC), which are unassociated with calcified atheromatous masses of atherosclerotic plaques.
Subjects And Methods:
. Endarterectomized coronary artery (CA) segments obtained during aortocoronary bypass surgery were pathomorphologically studied in 150 patients aged 49-72 years with coronary heart disease (CHD). CAC was found in 92% of cases. Two types of CAC were identified: one of them was associated with calcified atheromatous masses of atherosclerotic plaques; the other was related to necroses in the fibrous plaque parts. The atheromatous masses exhibited calcareous deposits as fine-grained masses of small extent. In chronic CHD, morphological signs of instability of atherosclerotic plaques were observed in 23.3% of cases, these being associated with lamellar CAC in two thirds.
Conclusion:
Calcification in the necrotic area of fibrous parts of stenotic plaques is typical of chronic CHD and is frequently attended by the development of large-focal calcareous deposits generally as laminas (lamellar calcification). Impaired transmural perfusion of plasma is noted to be involved in the development of necroses in stenotic CA atherosclerotic plaques.
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