The WHO/IAEA research programme on trace elements in cardiovascular diseases

Area of Science:

• Environmental Health
• Toxicology
• Cardiovascular Medicine

Background:

• Cardiovascular diseases remain a leading cause of mortality globally.
• Trace elements play crucial roles in physiological processes and can be toxic at certain levels.
• Understanding the relationship between trace element exposure and cardiovascular health is vital.

Purpose of the Study:

• To investigate the association between trace element concentrations (Cd, Cr, Cu, Se, Zn) and cardiovascular disease (myocardial infarction, hypertension).
• To compare element levels in specific tissues between subjects with and without a history of cardiovascular death.

Main Methods:

• Autopsy tissue samples (heart, kidney, liver, hair, toenails) were collected from male subjects following a standardized WHO protocol.
• Trace element analysis was performed using neutron activation analysis according to an IAEA protocol.
• Pathology and analytical data were systematically recorded and reported.

Main Results:

• Significant differences in the concentrations of certain trace elements (e.g., cadmium, copper, zinc) were observed between cardiovascular and non-cardiovascular death groups.
• Specific element accumulation patterns varied across different tissues analyzed.
• The study provides quantitative data on trace element burdens in relation to cardiovascular mortality.

Conclusions:

• Trace element profiles in various tissues may serve as indicators of cardiovascular disease status.
• Further research is warranted to elucidate the causal relationships and mechanisms underlying these associations.
• This international collaborative study highlights the importance of trace element monitoring in public health.