Erythrocyte magnesium and prostaglandin dynamics in chronic sleep deprivation.
Level 3 - non-randomized controlled study
Within-subject repeated-measures observational physiological study
PubMed 9068914 · doi:10.1002/clc.4960200315
What was done
Sixteen healthy male volunteers (mean age 21.6 ± 2.5 years) were evaluated across three sequential states: a control day after good sleep, a day of temporary sleep deprivation (< 3 hours sleep), and a day of chronic sleep deprivation (following one month of sleep < 60% of control). Erythrocyte magnesium was measured in all 16 subjects by atomic absorption. Plasma thromboxane B2 and 6-keto-prostaglandin F1 alpha were measured in 8 subjects by radioimmunoassay.
What was found
Mean erythrocyte magnesium concentration was significantly lower in chronic sleep deprivation (1.1 ± 0.4 mg/dl) compared to control (1.8 ± 0.4 mg/dl, p < 0.01) and temporary sleep deprivation (1.6 ± 0.4 mg/dl, p < 0.01). Plasma thromboxane B2 was significantly higher in chronic sleep deprivation compared to control (104.4 ± 78.0 vs. 20.4 ± 9.0 pg/ml, p < 0.05). No significant difference was observed for 6-keto-prostaglandin F1 alpha.
Why it matters
The findings offer preliminary evidence that sustained sleep restriction may deplete intracellular magnesium and increase platelet-activating prostaglandins, which are hypothesized pathways for coronary spasm and thrombosis.
Limits
The sample size was very small (n = 16 overall, n = 8 for prostaglandins) and restricted entirely to young healthy males. Testing conditions followed a non-randomized order, sleep duration was not objectively tracked via polysomnography, and direct vascular or clinical outcomes were not measured.
Cited by
- context Both short-term (1 day) and long-term (1 month) sleep deprivation cause a reduction in red blood cell magnesium levels in healthy men.