Key result
Acute 90-minute formaldehyde exposure in female adults decreased carotid distensibility (33.9 vs 25.9 10-3*kPa-1; p<0.05) and increased intima media thickness (0.42 vs 0.51 mm; p<0.05).
Why the study?
Short-term formaldehyde exposure reduces conduit vessel function, but whether these vascular decrements extend to arterial architecture and predispose to cardiovascular disease was unclear.
Does acute formaldehyde exposure alter arterial stiffness and carotid distensibility in female adults?
Observational (n=13)
Does acute formaldehyde exposure alter arterial stiffness and carotid distensibility in female adults?
Acute exposure to formaldehyde in cadaver laboratories may cause immediate adverse changes in vascular architecture, specifically decreasing carotid distensibility and increasing intima media thickness.
Answers are grounded in this paper and cite their sources.
Does not yet support practice changes for exposed personnel; hypothesis-generating for formaldehyde's acute vascular effects in women.
Formaldehyde (FA) is a ubiquitous organic preservative used in several industries and represents an occupational health hazard. Short-term exposure to FA can increase oxidative stress and cause a decrease in conduit vessel function. These decrements in vascular function may extend to the arterial architecture, predisposing individuals to increased risk of cardiovascular disease. The purpose of this study was to investigate the impact of an acute 90-minute FA exposure period (259 ± 95 ppb) on indices of arterial architecture. Arterial stiffness and carotid distensibility as determined by central pressures, augmentation index (AIx), and carotid-femoral pulse wave velocity (cfPWV) ( n=13F, 24 ± 1 year) as well as carotid stiffness and intima media thickness (IMT) ( n = 9F, 23 ± 1 year) were assessed prior to (Pre-FA) and immediately following (Post-FA) exposure to FA in human cadaver dissection laboratories. Central pressures and cfPWV (Pre-FA: 5.2 ± 0.8 m.s −1 , Post-FA: 5.2 ± 1.1 m s −1 ) were unchanged by acute FA exposure ( p > 0.05). Carotid stiffness parameters and distension were unchanged by acute FA exposure ( p > 0.05), although distensibility (Pre-FA: 33.9 ± 10.5[10–3*kPa −1 ], Post-FA: 25.9 ± 5.5[10–3*kPa-1], p < 0.05), and IMT (Pre-FA: 0.42 ± 0.05 mm, Post-FA: 0.51 ± 0.11 mm, p < 0.05) decreased and increased, respectively. Individual Pre- to Post-FA changes in these markers of arterial architecture did not correlate with levels of FA exposure ([FA]: 20–473 ppb) ( p > 0.05). Our group previously found vascular function decrements following acute FA exposure in human cadaver laboratories; here we found that carotid distensibility and intima media thickness are altered following FA exposure.
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Stute et al. (2021) conducted an observational in Occupational formaldehyde exposure (n=13). Acute formaldehyde exposure vs. Pre-exposure baseline was evaluated on Carotid distensibility (10-3*kPa-1) (p=<0.05). Acute 90-minute formaldehyde exposure in female adults decreased carotid distensibility (33.9 vs 25.9 10-3*kPa-1; p<0.05) and increased intima media thickness (0.42 vs 0.51 mm; p<0.05).
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