Lung function and cardiovascular risk: relationship with inflammation-sensitive plasma proteins.

Area of Science:

• Pulmonary Medicine
• Cardiovascular Medicine
• Inflammation Biology

Background:

• The link between reduced pulmonary function and cardiovascular disease (CVD) is not fully understood.
• Inflammation is a potential mediating factor in this relationship.

Purpose of the Study:

• To investigate the association between pulmonary function and inflammation-sensitive plasma proteins.
• To determine if these proteins mediate the increased cardiovascular risk observed in individuals with low pulmonary function.

Main Methods:

• Prospective study of 5064 healthy men aged 28-61 years.
• Measured Forced Vital Capacity (FVC) and plasma levels of specific inflammation-sensitive proteins.
• Monitored all-cause mortality, cardiovascular mortality, and myocardial infarction incidence over 18.4 years.

Main Results:

• Low FVC was associated with higher plasma levels of inflammation-sensitive proteins.
• Low FVC independently predicted increased risk of myocardial infarction and cardiovascular death.
• Adjusting for protein levels partially attenuated the increased cardiovascular risk associated with low FVC, explaining 10-25% of the excess risk.

Conclusions:

• Forced Vital Capacity (FVC) is inversely associated with plasma levels of inflammation-sensitive proteins.
• Inflammation-sensitive proteins partially mediate the elevated cardiovascular risk linked to reduced pulmonary function.
• This relationship does not fully account for the observed increase in cardiovascular risk among men with low FVC.