Immunological Consequences of Obstructive Sleep Apnea
| Status: | Completed |
|---|---|
| Conditions: | Insomnia Sleep Studies, Pulmonary, Pulmonary |
| Therapuetic Areas: | Psychiatry / Psychology, Pulmonary / Respiratory Diseases |
| Healthy: | No |
| Age Range: | 18 - Any |
| Updated: | 4/21/2016 |
| Start Date: | October 2004 |
| End Date: | June 2006 |
Influence of Obstructive Sleep Apnea on Humoral and Cell-Mediated Vaccine Responses
Obstructive sleep apnea (OSA) is a medical problem whose importance is increasing in
recognition and awareness. OSA is associated with the development of hypertension and other
cardiovascular diseases (1,2). OSA has pathophysiologic characteristics that are known to
negatively impact immune function. Both sleep deprivation and hypoxia, hallmarks of OSA,
impair immune responses (6,8,11). In addition, patients with OSA are frequently obese and
obesity may be associated with increased chance of infections and immune impairment (14,15).
Adipose cells are known to secrete cytokines and hormones that are involved in the immune
response such as leptin, tumor necrosis factor alpha and interleukin-6 (16-19). Thus, it
seems very likely that OSA may impact antigen-specific immune responses. Although it is
known that characteristics of OSA impact immune function, it is not known what effects
clinical OSA has on immunity.
The central hypothesis of this application is that that patients with obstructive sleep
apnea will have attenuated cell-mediated and humoral immune responses to influenza vaccine
compared to matched control subjects. Our hypothesis has been formulated on the basis that
patients with OSA are sleep deprived and experience repeated hypoxemia that negatively
impact both humoral and cell-mediated immune responses.
recognition and awareness. OSA is associated with the development of hypertension and other
cardiovascular diseases (1,2). OSA has pathophysiologic characteristics that are known to
negatively impact immune function. Both sleep deprivation and hypoxia, hallmarks of OSA,
impair immune responses (6,8,11). In addition, patients with OSA are frequently obese and
obesity may be associated with increased chance of infections and immune impairment (14,15).
Adipose cells are known to secrete cytokines and hormones that are involved in the immune
response such as leptin, tumor necrosis factor alpha and interleukin-6 (16-19). Thus, it
seems very likely that OSA may impact antigen-specific immune responses. Although it is
known that characteristics of OSA impact immune function, it is not known what effects
clinical OSA has on immunity.
The central hypothesis of this application is that that patients with obstructive sleep
apnea will have attenuated cell-mediated and humoral immune responses to influenza vaccine
compared to matched control subjects. Our hypothesis has been formulated on the basis that
patients with OSA are sleep deprived and experience repeated hypoxemia that negatively
impact both humoral and cell-mediated immune responses.
Inclusion Criteria:
- Absence of any immunocompromising diseases or medical conditions
- Not taking any immune modifying medications or supplements
- Significant obstructive sleep apnea as verified by complete overnight polysomnography
with apnea-hypopnea index (AHI) > 15 events per hour (sleep apnea subjects)
- Free of sleep disordered breathing verified by complete overnight polysomnography
(AHI < 5 events per hour) or oximetry (< 5 desaturations per hour) (control subjects)
Exclusion Criteria:
- Documented history of allergy to influenza vaccine or any of its components
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