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. 2022 Jan;38(1):e3465.
doi: 10.1002/dmrr.3465. Epub 2021 May 11.

Central obesity, smoking habit, and hypertension are associated with lower antibody titres in response to COVID-19 mRNA vaccine

Affiliations

Central obesity, smoking habit, and hypertension are associated with lower antibody titres in response to COVID-19 mRNA vaccine

Mikiko Watanabe et al. Diabetes Metab Res Rev. 2022 Jan.

Abstract

Aims: To explore variables associated with the serological response following COVID-19 mRNA vaccine.

Methods: Eighty-six healthcare workers adhering to the vaccination campaign against COVID-19 were enrolled in January-February 2021. All subjects underwent two COVID-19 mRNA vaccine inoculations (Pfizer/BioNTech) separated by 3 weeks. Blood samples were collected before the 1st and 1-4 weeks after the second inoculation. Clinical history, demographics, and vaccine side effects were recorded. Baseline anthropometric parameters were measured, and body composition was performed through dual-energy-X-ray absorptiometry.

Results: Higher waist circumference was associated with lower antibody (Ab) titres (R = -0.324, p = 0.004); smokers had lower levels compared to non-smokers [1099 (1350) vs. 1921 (1375), p = 0.007], as well as hypertensive versus normotensive [650 ± 1192 vs. 1911 (1364), p = 0.001] and dyslipideamic compared to those with normal serum lipids [534 (972) vs 1872 (1406), p = 0.005]. Multivariate analysis showed that higher waist circumference, smoking, hypertension, and longer time elapsed since second vaccine inoculation were associated with lower Ab titres, independent of BMI, age. and gender.

Conclusions: Central obesity, hypertension, and smoking are associated with lower Ab titres following COVID-19 vaccination. Although it is currently impossible to determine whether lower SARS-CoV-2 Abs lead to higher likelihood of developing COVID-19, it is well-established that neutralizing antibodies correlate with protection against several viruses including SARS-CoV-2. Our findings, therefore, call for a vigilant approach, as subjects with central obesity, hypertension, and smoking could benefit from earlier vaccine boosters or different vaccine schedules.

Keywords: BMI; SARS CoV-2; immunogenicity; infection; vaccination; waist circumference.

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Conflict of interest statement

The authors declare that there are no conflict of interests.

Figures

FIGURE 1
FIGURE 1
Serological response in relation to selected cardiometabolic conditions and risk factors. (A) Scattered dot‐plot representing the correlation between anti‐SARS‐CoV‐2 antibody titres and waist circumference. p is from a univariate linear regression analysis, with Ab titres as the dependent variable and waist circumference as the independent variable; (B) smokers; (C) hypertensive subjects; and (D) dyslipideamic subjects showed lower Ab titres compared to non‐smokers, normotensive, and those with a normal lipid profile, respectively. *p < 0.05, **p < 0.01, **p < 0.001, ***p < 0.000

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