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Diurnal cortisol features with cardiovascular disease in hypertensive patients: a cohort study
Lin Gan1, Nanfang Li1, Mulalibieke Heizati1
1Hypertension Center of People's Hospital of Xinjiang Uygur Autonomous Region, Xinjiang Hypertension Institute; National Health Committee Key Laboratory of Hypertension Clinical Research, Key Laboratory of Xinjiang Uygur Autonomous Region, Hypertension Research Laboratory, Xinjiang Clinical Medical Research Center for Hypertension (Cardio-Cerebrovascular) Diseases, Urumqi, Xinjiang, China.
Insights
Diurnal cortisol patterns, specifically a steep diurnal cortisol slope (DCS), are linked to reduced cardiovascular disease (CVD) risk in hypertensive men. Higher midnight cortisol levels increase CVD risk in this population.
Area of Science:
- Endocrinology
- Cardiovascular Medicine
- Hypertension Research
Background:
- The hypothalamic-pituitary-adrenal (HPA) axis and diurnal cortisol patterns are implicated in cardiovascular disease (CVD).
- The specific impact of diurnal cortisol features on future CVD risk in hypertensive individuals remains unclear.
Purpose of the Study:
- To investigate the association between diurnal cortisol features and the incidence of CVD.
- To evaluate the predictive value of cortisol rhythm for CVD events in patients with hypertension.
Main Methods:
- Utilized data from the Urumqi Research on Sleep Apnea and Hypertension (UROSAH) cohort (2011-2021).
- Employed Cox proportional hazards models to analyze the relationship between baseline diurnal cortisol features (diurnal cortisol slope and midnight cortisol) and incident CVD.
- Conducted sex-specific and sensitivity analyses.
Main Results:
- A steep diurnal cortisol slope (DCS) was associated with a significantly decreased risk of CVD (HR=0.86, P=0.011).
- Higher midnight cortisol levels were positively associated with an increased risk of CVD (HR=1.24, P=0.002).
- These associations were primarily observed in men, with no significant link found in the female subgroup.
Conclusions:
- Flatter DCS and elevated midnight cortisol levels are risk factors for CVD in hypertensive patients, particularly men.
- Monitoring diurnal cortisol rhythm may aid in identifying hypertensive individuals at higher risk for CVD.
Objective:
The hypothalamic-pituitary-adrenal (HPA) axis may be associated with cardiovascular disease (CVD) and the effects of diurnal cortisol features on future CVD remain unclear among patients with hypertension. This study aimed to evaluate the association between diurnal cortisol features and CVD in patients with hypertension.
Design And Methods:
Participants with cortisol rhythm test at baseline in Urumqi Research on Sleep Apnea and Hypertension (UROSAH) in 2011-2013 were enrolled and followed up till 2021. Incident events included coronary heart disease, stroke, and heart failure. Cox proportional hazards model was used to evaluate the relationship between diurnal cortisol features and incident CVD. Sex-specific and sensitivity analyses were also performed.
Results:
In total, 2305 hypertensive participants comprised the current analytical sample. During a median follow-up of 7.2 years and 16374.9 person-years, there were 242 incident CVD cases. Multivariable Cox regression showed that steep diurnal cortisol slope (DCS) was significantly associated with decreased CVD risk (per s.d., hazard ratio (HR) = 0.86, 95% CI: 0.77-0.96, P = 0.011). Midnight cortisol was positively associated with an increased CVD risk (per s.d., HR = 1.24, 95% CI: 1.08-1.42, P = 0.002). Comparable results were observed in the sensitivity analyses. Neither midnight cortisol nor DCS was associated with incident CVD in the female subgroup.
Conclusions:
Flatter DCS and higher midnight cortisol levels are associated with an increased risk of CVD in patients with hypertension, especially in men. The detection of diurnal cortisol rhythm may help identify patients with hypertension at high risk of CVD.
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