February 19, 2014Journal of Clinical HypertensionOpen Access

Orthostatic Blood Pressure Dysregulation and Polymorphisms of β‐Adrenergic Receptor Genes in Hypertensive Patients

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Why the study?

Does the β1-AR Arg389/Gly polymorphism increase the risk of orthostatic blood pressure dysregulation in untreated hypertensive patients?

Structured PICO

Does the β1-AR Arg389/Gly polymorphism increase the risk of orthostatic blood pressure dysregulation in untreated hypertensive patients?

Population

4,456 adults aged 40 to 75 years from a rural community in China, including 3,630 untreated hypertensive patients and 826 normotensive controls. Exclusions included known heart failure, renal failure, valvular heart disease, secondary hypertension, or severe debilitating chronic illness.

Intervention

Presence of β1-AR (Arg389/Gly) and β2-AR (Arg16/Gly) gene polymorphisms (specifically evaluating the β1-AR Gly389 homozygote)

Comparator

Patients with other genotypes (e.g., Arg389 allele carriers) and normotensive controls

Outcome

Orthostatic blood pressure dysregulation (diagnosis of orthostatic hypotension or orthostatic hypertension)surrogate

The β1-AR Arg389/Gly polymorphism is associated with an increased risk of orthostatic hypotension in female hypertensive patients, suggesting a genetic predisposition to orthostatic blood pressure dysregulation.

Limitations

Did not replicate results in another independent sample of hypertensive patients
Did not investigate all polymorphisms in all genes encoding pathways of the sympathetic nervous system
Lacking description of heart rate during postural change due to intermittent measurement rather than continuous ECG monitoring

Discussion

No takes yet. Share an insight, caveat, or question.

Implication

Associated with orthostatic hypotension risk in hypertensive women; hypothesis-generating and should not yet change practice.

Cite This Study

Gao et al. (2014) studied this question.

synapsesocial.com/papers/6a7f588ec51229aa807b332b https://doi.org/10.1111/jch.12272

Topics

Hypertension management

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Orthostatic Blood Pressure Dysregulation and Polymorphisms of β‐Adrenergic Receptor Genes in Hypertensive Patients

Structured PICO

Limitations

Discussion

Implication

Cite This Study

Topics

Orthostatic Blood Pressure Dysregulation and Polymorphisms of β‐Adrenergic Receptor Genes in Hypertensive Patients

Structured PICO

Limitations

Discussion

Implication

Cite This Study

Also Consider

Topics

Also Consider