Molecular and cellular mechanisms linking air pollution and bone damage

Area of Science:

• Environmental Health
• Bone Biology
• Toxicology

Background:

• Air pollution is a major risk factor for noncommunicable diseases.
• Particulate matter (PM) from air pollution impacts various organs, including bones.
• Emerging evidence links PM exposure to reduced bone mineral density and increased fracture risk.

Purpose of the Study:

• To review the mechanisms connecting air pollution exposure to bone damage.
• To highlight the role of systemic inflammation, oxidative stress, endocrine disruption, and vitamin D deficiency.

Main Methods:

• Literature review of studies investigating air pollution and bone health.
• Analysis of proposed pathophysiological pathways.
• Synthesis of current scientific understanding.

Main Results:

• Air pollutants can induce systemic inflammation affecting bone metabolism via cytokines.
• Pollutants cause oxidative damage in bone cells.
• Some pollutants act as endocrine disruptors impacting bone cell function.
• Air pollution contributes to vitamin D deficiency, further weakening bones.

Conclusions:

• Multiple mechanisms link air pollution to osteoporosis and fractures.
• Recognizing air pollution as a modifiable risk factor is crucial for public health.
• Further research can guide preventive strategies and reduce healthcare costs associated with fragility fractures.