Abstract
Introduction
Butyrylcholinesterase (BChE), an important biomarker of exposure to anticholinesterases, varies its activity according to the intensity and duration of exposure to these agents. Their normal values may vary in different populations. It is important to determine the reference values for the local population, mostly black/brown.
Objective
The objective was to investigate the baseline values of BChE activity in a sample of the Salvador city population (Bahia, Brazil), evaluating the sociodemographic characteristics.
Method
A descriptive, quantitative study with a cross-sectional approach was carried out in 304 voluntary and healthy blood donors. BChE activity was determined using the integrated chemical system Dimension RxLMax and analyses of sociodemographic characteristics were performed.
Results
For the 304 participants (18 to 67 years old), BChE activity values range were 7.4 to 19.8 U/mL (male) and 6.0 to 19.6 U/mL (female), without significant inter-racial differences (p = 0.986; Mann–Whitney). The participates were predominantly black (44.7%) and brown (40.5%), with higher levels of BchE activity in males (64.8%) (p-value = 0.01) than females (35.2%). There was no relationship between alcohol use and lower BChE activity (p = 0.725, Mann–Whitney). Women using hormonal contraceptives had a median activity 9.2% lower than the non-users.
Conclusion
Despite the high miscegenation and predominance of the black race in Salvador, contrary to what was expected, the sample did not show statistically significant intra-racial differences in BChE activity, being able to use the same reference values currently used, observing factors such as sex, use of contraceptives, and drinking alcohol.
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Acknowledgements
The authors thank the institutions Toxicological Information and Assistance Center of Bahia (CIATox-BA), the Secretariat of Health of the State of Bahia (SESAB), the Federal University of Bahia (UFBA), and the Hematology and Hemotherapy Foundation of Bahia (HEMOBA) who kindly authorized the access and use of their structures, necessary to carry out this work. This research had the support of Anicele de Jesus and Leonardo Buffone in collecting material, Agnaldo de Souza Orrico in the statistical analysis, and Siemens Helthcare in providing kits for determination of dosages of BChE activity. The authors would also like to thank each of the collaborators and donors participating in the research, without whom it would not materialize.
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da Conceição Filho, J.N., dos Santos, I.C., Gonçalves, D.P.d. et al. Black and non-black population: investigation of the difference in butyrylcholinesterase activity in a healthy population in Salvador, Bahia. Ir J Med Sci 192, 1311–1319 (2023). https://doi.org/10.1007/s11845-022-03087-7
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DOI: https://doi.org/10.1007/s11845-022-03087-7