| Summary: | The metabolic syndrome (MS) and its components have become a serious problem
worldwide. The MS describes a cluster of risk factors related to cardiovascular disease.
Some of these factors (hypertension, diabetes and obesity in women) have been found
to be common among Africans. Therefore, the aim of this study was firstly to determine
the incidence of the MS components among African women, using the NCEP ATP 111
(National Cholesterol Education Program's Adult Treatment Panel) definition. Further
objectives were to determine possible interrelationships between the obesity or the
insulin resistance (IR) component and other MS components and with other related
cardiovascular variables such as angiotensin II (Ang II) and endothelin-1 (ET-1). The
subject group consisted of 101 African women (age: 20-50 yrs) that participated in the
POWIRS (Profile of Obese Women with Insulin Resistance Syndrome) project. Blood
pressure (BP) was taken with a Finometer device. Anthropometric measurements were
also taken. Fasting glucose, lipids, Ang II and ET-1 values were obtained from blood
samples. The subject group was classified according to the number of ATP III MS
criteria present. None of the MS components were identified in 20 subjects, 46
presented one component and 35 had two or more of the components. The latter group
showed significantly higher (p ≤ 0.05) body mass index (BMI), waist circumference
(WC), BP, glucose and triglyceride values and a significantly lower (p ≤ 0.05) HDL
cholesterol (HDL-C) value than the other groups. In the multiple regression analyses,
diastolic BP (DBP) and arterial compliance were associated with WC and BMI in most
groups. In the group with one MS criterion, Ang II and ET-1 were associated with IR.
HDL-C was associated with WC and BMI in this group. HDL-C was also significantly
lower (p ≤ 0.05) in this group than in the group with no MS components and this was the
only significant difference found between these two groups. It is concluded that
abdominal obesity (WC) may play an important role in the development of the MS as it
showed significant associations with vascular complications (DBP and arterial
compliance). It was further found that Ang II, ET-1 and HDL-C could also be involved in
the developmental stages of the MS among younger African women. === Thesis (M.Sc. (Physiology))--North-West University, Potchefstroom Campus, 2005.
|
|---|
