Despite efficient antiretroviral treatment for HIV infection, decrease in life expectancy remains. Excess mortality is mainly due to non-AIDS co-morbidity including cardiovascular, pulmonary, and liver related diseases. Both HIV-unrelated and HIV-related risk factors probably contribute to this pattern. At present, most evidence regarding co-morbidity in HIV infection rely on cross-study comparisons of HIV-infected persons with published population rates and few prospective studies in U.S. cohorts. Using well characterized participants from the Copenhagen General Population Study (CGPS) as controls, we aim to include >1500 HIV-infected persons in the COCOMO study to determine if co-morbidity is more prevalent or develops at a higher rate in HIV-infected persons. The study will asses 1) cardiovascular, 2) pulmonary and 3) liver-related co-morbidity using uniformly collected data in the two cohorts. The investigators aim to study the relative impact of HIV-unrelated and HIV-related factors on development of co-morbidity.

Primary hypothesis:

Cardiovascular disease:

- HIV infection is independently associated with higher prevalence of coronary atherosclerosis (assessed by CT angiography)

Obstructive pulmonary disease:

- HIV infection is independently associated with higher prevalence of COPD, and independently associated with loss of lung function

Liver disease:

- HIV infection is independently associated with liver steatosis, steatohepatitis and liver fibrosis

Lipid and fat metabolism:

- HIV infection is independently associated with alterations in adipose fat tissue and dyslipidemia

Secondary hypothesis:

Cardiovascular disease:

• Viral load and CD4 are independently associated with coronary atherosclerosis (assessed by CT angiography) in HIV-infected individuals.
• Levels of inflammatory markers can predict coronary atherosclerosis in HIV-infected individuals.
• Microbial translocation and metabolism are associated with coronary atherosclerosis in HIV-infected individuals.
• Endothelial dysfunction (assessed by arterial elastography) can predict coronary atherosclerosis in HIV-infected individuals

Obstructive pulmonary disease:

• Viral load and CD4 is independently associated with emphysema
• HIV is independently associated with pulmonary hypertension (assessed by CT angiography), and obstructive lung disease is independently associated with airway obstruction
• PCP colonization in HIV infected patients is independently associated with obstructive lung disease, emphysema and loss of lung function.
• Inflammatory markers in HIV infected patients are associated with obstructive lung disease and loss of lung function

Inclusion Criteria:

• signed informed consent
• HIV infected
• aged 20-100 years

Exclusion Criteria:

• patients that are unable to understand information material

Computed tomography (CT):

• contraindications to CT and contrast (i.e. pregnancy, renal impairment, allergy to contrast media, allergy or contraindication to beta blocking agent, body weight more than 120kg, evidence of ongoing myocardial ischemia, heart rhythm precluding EKG gating)

Spirometry:

• relative contraindications to spirometry (i.e. chest, abdominal or eye surgery within the 3 months before baseline spirometry, and known retinal detachment)
• allergy or contraindications to salbutamol (i.e. >110 bpm, or a known uncontrolled cardiac condition (i.e. unstable coronary artery disease, decompensated heart failure)
• a respiratory illness with at least two symptoms of breathlessness, cough, wheezing, or increase in sputum production within 6 weeks.

MRI:

• Implants (e.g. pacemaker, coclea implants, insulin pumps)
• Claustrophobia
• Pregnancy

Liver Biopsy:

• Risk of bleeding
• Infection in puncture site

HIV infected patients.