Distribution of inorganic elements in human autopsy tissue

Area of Science:

• Forensic Medicine
• Cardiology
• Biochemistry

Background:

• Unexplained deaths pose challenges in forensic medicine.
• Cardiac dysfunction of unknown origin may involve physiological insufficiency undetectable by standard methods.
• Alterations in inorganic elements within the heart's conduction system are a potential factor.

Purpose of the Study:

• To determine the concentration of inorganic elements in specialized cardiac tissues.
• To investigate potential links between ion levels and unexplained cardiac dysfunction.
• To provide baseline data on inorganic element distribution in the sinus node, atrioventricular node, septum, and left ventricle anterior wall.

Main Methods:

• Tissue samples from 24 cases were analyzed.
• Microwave technology was used for tissue digestion.
• Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) measured ion concentrations (Na, Mg, K, Ca, Mn, Fe, Cu, Zn, P, S).

Main Results:

• Significant variations in ion concentrations were observed across different heart regions (sinus node, septum, AV node, left ventricle anterior wall).
• Specific average ion concentrations (in µg/g) were reported for each element in each region.
• Data provides a detailed elemental profile for key cardiac tissues.

Conclusions:

• The study establishes reference ranges for inorganic elements in critical heart tissues.
• These findings can aid in the forensic investigation of deaths with undetermined cardiac causes.
• Further research may elucidate the role of these elemental changes in cardiac dysfunction.