Thesis (M.Sc. (Chemical Pathology)) --University of Limpopo, 2013 / Objectives
The present study investigated how the serum lipids responded to a high-fat meal in black South African subjects with different APOE genotypes, a population that until recently was reported to be consuming a traditional diet of low fat and high carbohydrates.
Methods
Sixty students (males and females) of the University of Limpopo, Turfloop
Campus were successfully genotyped using Restriction Fragment Length Polymorphism (RFLP) and grouped into four APOE genotype groups; ε2,
ε2/ε4, ε3 and ε4. Only thirty-three subjects volunteered to participate in the
oral fat-tolerance test (OFTT), but two were excluded for having abnormal
total cholesterol (6.05 mmol/l) and LDL cholesterol (3.12 mmol/l) so only 31
subjects were left. The numbers per group were ε2=5, ε2/ε4=8, ε3=9 and ε4=9. After an overnight fast blood was drawn for measurements of baseline serum parameters. Subjects were administered a high fat meal 30 minutes after the baseline blood sample was drawn. Blood was drawn at intervals of 20, 40, 60, 120, 180, 240, 300 and 360 minutes for measurements of postprandial
serum parameter levels. Serum parameters measured were triglyceride, total
cholesterol, low density lipoprotein cholesterol, high density lipoprotein
cholesterol, glucose and insulin.
Results
Mean levels of serum lipids at baseline in mmol/l were as follows; group
1[TG=0.69(0.55-0.81), TCHOL=3.10±0.29, HDL-C=1.12±0.32, LDLC= 1.67±0.28]; group 2 [TG=0.61(0.53-1.00), TCHOL=2.98±0.53, HDLC=
1.20±0.37, LDL-C=1.43±0.37]; group 3 [TG=0.67(0.28-0.86),
TCHOL=2.96±0.54, HDL-C=1.22±0.30, LDL-C=1.46±0.47]; group 4
[TG=0.76(0.51-1.16), TCHOL=3.27±0.51, HDL-C=1.12±0.17, LDLC=
1.79±0.47]. There was no significant difference in the mean levels of
baseline triglyceride, total cholesterol, low density lipoprotein cholesterol, and
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high density lipoprotein cholesterol between the APOE groups hence no
significant difference in the response to a fatty meal.
Conclusions
There was no significant change in serum lipid concentrations after a fatty
meal in individuals with different APOE genotypes in a population that
consume a traditional diet of low fat and high carbohydrates. Due to the small
sample size, the results should be interpreted with caution. A larger study is
recommended to ascertain the role of APOE genotypes on serum lipid response to a fatty meal in Black South African population.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:ul/oai:ulspace.ul.ac.za:10386/1059 |
| Date | January 2013 |
| Creators | Dikotope, Sekgothe Abram |
| Contributors | Alberts, M., Choma, S. S. R. |
| Publisher | University of Limpopo (Turfloop Campus) |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | xiii, 97 leaves. |
| Relation |
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