Subjective Social Status Predicts in Vivo Responsiveness of β-adrenergic Receptors
Overview
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Objective: Several poor health outcomes, including cardiovascular risk, have been associated with both subjective social status (SSS) and sympathetic overactivity. Because prolonged sympathetic overactivation down regulates beta adrenergic receptor (β-AR) function, reduced β-AR responsiveness is considered an indicator of sympathetic overactivity and a cardiovascular risk factor. Though prior research has focused on objective social status and β-AR function, no studies have examined the association between SSS and β-AR function. We aimed to learn whether SSS predicts the in vivo responsiveness of β-ARs.
Methods: We assessed the chronotropic 25 dose (CD25), an in vivo marker of β-AR responsiveness, in 94 healthy participants. The MacArthur scales of subjective social status were used to assess SSS in the U.S.A. (SSS-USA) and in the local community (SSS-C). Objective social status was analyzed by calculating the Hollingshead two-factor index.
Results: β-AR responsiveness was reduced (as indicated by higher CD25 values) in participants with lower SSS-USA (p = .007) and lower SSS-C (p < .001). The relationship between CD25 and SSS was particularly robust with respect to SSS-C. Hierarchical regression analyses revealed that SSS-C remained a significant predictor of CD25 (p < .001) and accounted for 14% of the total variance (32%) in CD25 after adjusting for sociodemographic variables (age, ethnicity, gender), health factors (exercise, smoking status, body mass index) and objective social status.
Conclusion: Our results indicate that β-AR function may be an important component of the link between SSS and health.
McGarity-Shipley E, Lee E, Pyke K Health Psychol Behav Med. 2023; 11(1):2268697.
PMID: 37842010 PMC: 10569351. DOI: 10.1080/21642850.2023.2268697.
Chen X, Woo J, Yu R, Chung G, Yao W, Yeoh E Int J Environ Res Public Health. 2022; 19(16).
PMID: 36011511 PMC: 9408352. DOI: 10.3390/ijerph19169857.
Piedra L, Andrade F, Hernandez R, Perreira K, Gallo L, Gonzalez H J Am Heart Assoc. 2021; 10(16):e012704.
PMID: 34378404 PMC: 8475025. DOI: 10.1161/JAHA.119.012704.
Varghese J, Hall R, DiGirolamo A, Martorell R, Ramirez-Zea M, Stein A SSM Popul Health. 2021; 15:100880.
PMID: 34377763 PMC: 8327130. DOI: 10.1016/j.ssmph.2021.100880.
McClain A, Gallo L, Mattei J Ann Behav Med. 2021; 56(5):442-460.
PMID: 33942845 PMC: 9116590. DOI: 10.1093/abm/kaab025.