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Year : 2019  |  Volume : 22  |  Issue : 3  |  Page : 355-360

Defining apolipoprotein B treatment targets

1 Department of Chemical Pathology, University College Hospital, Ibadan, Nigeria
2 Department of Chemical Pathology, College of Medicine, University of Ibadan, Oyo, Nigeria

Correspondence Address:
Dr. G O Ayoade
Department Chemical Pathology, University College Hospital, Ibadan, Oyo
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/njcp.njcp_348_17

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Background: Apolipoprotein B (apo B) has been widely reported to be a better predictor of cardiovascular risk than low-density lipoprotein cholesterol (LDL-C). This is the reason apo B treatment target values based on the equivalence to LDL-C values in healthy population has been advocated using percentiles from population studies. The aim of this study was to determine the apo B values equivalent to currently used medical decision targets for LDL-C concentration in a population of healthy Nigerians and examine for any demographic influence. Materials and Methods: A total of 252 apparently healthy individuals (89 males, 163 females), between the ages of 30 and 65 years were selected from core health workers (medical and nursing staffs) of University College Hospital Ibadan between December 2015 and May 2016. Serum lipids and apo B were measured using enzymatic and immunoturbidimetry method, respectively. Results: The mean apo B of the study population were 94 and 98 mg/dL in men and women, respectively. Mean apo B concentration was significantly higher in the female participants in the age groups above 55 years. LDL-C concentrations of 100, 130, 160, and 190 mg/dL corresponded to the 15th, 55th, 87th, and 95th percentile, respectively. The corresponding apo B concentrations were 73 mg/dL (15th percentile), 95 mg/dL (55th percentile), 124 mg/dL (87th percentile), and 145 mg/dL (95th percentile). The group of participants with LDL-C of <130 mg/dL and the group with equivalent apo B of <95 mg/dL has the same clinical and biochemical characteristics in both men and women. Conclusion: This study has defined apo B targets that may potentially be used to guide the initiation of therapy in persons with dyslipidemia. It has also demonstrated the population level relationship that exists between apo B and LDL-cholesterol and has shown the gender and age-related influence of apo B distribution in the population.

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