Cadmium content of human cancellous bone

Area of Science:

• Human physiology
• Bone biology
• Toxicology

Background:

• Cadmium is a toxic heavy metal with potential bone-seeking properties.
• Understanding cadmium accumulation in human bone is crucial for assessing health risks.
• Factors influencing cadmium deposition in bone require further investigation.

Purpose of the Study:

• To investigate the relationship between cadmium content in human cancellous bone and various factors.
• To determine correlations between cadmium and other elements, bone properties, and demographic data.

Main Methods:

• Analysis of cadmium, fluoride, strontium, and nickel concentrations in human iliac crest bone specimens (n=939) using atomic absorption spectrophotometry and ion-specific electrodes.
• Measurement of bone mineral density via gamma ray attenuation and compressive strength using a strain transducer.
• Statistical analysis employing multiple linear regression.

Main Results:

• Mean cadmium content was 0.22 ± 9.16 µg/g dry weight, showing no age-dependent changes.
• Slightly higher cadmium levels were observed in males compared to females.
• No significant correlation was found between cadmium content and bone loss or calcium levels.
• A strong positive correlation was identified between cadmium, strontium, and nickel content in bone.

Conclusions:

• Cadmium accumulation in human bone is not significantly influenced by age or bone loss.
• Sex and the presence of other trace elements like strontium and nickel are associated with bone cadmium levels.
• Further research is warranted to elucidate the toxicological implications of these findings.