scholarly journals Changes in cardiovascular disease risk factors and C‐reactive protein following a 500‐mile, 30‐day pilgrimage: El Camino de Santiago

2007 ◽  
Vol 21 (6) ◽  
Author(s):  
Michelle R. Wolf ◽  
M. Brennan Harris
Keyword(s):  
Risk Factors ◽  
Cardiovascular Disease ◽  
Disease Risk ◽  
Cardiovascular Disease Risk ◽  
Cardiovascular Disease Risk Factors ◽  
C Reactive Protein ◽  
Camino De Santiago ◽  
Reactive Protein

scholarly journals Circadian Misalignment Increases C-Reactive Protein and Blood Pressure in Chronic Shift Workers

2017 ◽  
Vol 32 (2) ◽  
pp. 154-164 ◽  
Author(s):  
Christopher J. Morris ◽  
Taylor E. Purvis ◽  
Joseph Mistretta ◽  
Kun Hu ◽  
Frank A. J. L. Scheer
Keyword(s):  
Risk Factors ◽  
Blood Pressure ◽  
Cardiovascular Disease ◽  
Disease Risk ◽  
Cardiovascular Disease Risk ◽  
C Reactive Protein ◽  
Shift Workers ◽  
Circadian Misalignment ◽  
Reactive Protein ◽  
Hs Crp

Shift work is a risk factor for inflammation, hypertension, and cardiovascular disease. This increased risk cannot be fully explained by classical risk factors. Shift workers’ behavioral and environmental cycles are typically misaligned relative to their endogenous circadian system. However, there is little information on the impact of acute circadian misalignment on cardiovascular disease risk in shift workers, independent of differences in work stress, food quality, and other factors that are likely to differ between night and day shifts. Thus, our objectives were to determine the independent effect of circadian misalignment on 24-h high-sensitivity C-reactive protein (hs-CRP; a marker of systemic inflammation) and blood pressure levels—cardiovascular disease risk factors—in chronic shift workers. Chronic shift workers undertook two 3-day laboratory protocols that simulated night work, comprising 12-hour inverted behavioral and environmental cycles (circadian misalignment) or simulated day work (circadian alignment), using a randomized, crossover design. Circadian misalignment increased 24-h hs-CRP by 11% ( p < 0.0001). Circadian misalignment increased 24-h systolic blood pressure (SBP) and diastolic blood pressure (DBP) by 1.4 mmHg and 0.8 mmHg, respectively (both p ≤ 0.038). The misalignment-mediated increase in 24-h SBP was primarily explained by an increase in SBP during the wake period (+1.7 mmHg; p = 0.017), whereas the misalignment-mediated increase in 24-h DBP was primarily explained by an increase in DBP during the sleep opportunity (+1.8 mmHg; p = 0.005). Circadian misalignment per se increases hs-CRP and blood pressure in shift workers. This may help explain the increased inflammation, hypertension, and cardiovascular disease risk in shift workers.

Sign in / Sign up

Export Citation Format

Share Document