6 research outputs found
Serum Lp(a) lipoprotein levels in patients with atherosclerotic occlusive disease of the lower extremities
Objective: to evaluate the association between Lp(a) lipoprotein levels,
other serum lipids and the presence of lower limb atherosclerotic
occlusive disease.
Materials and methods: angiographic findings in 36 patients were related
to serum Lp(a). Total cholesterol, triglycerides, LDL-cholesterol,
HDL-cholesterol and Lp(a) levels were compared with those of 73 age- and
sex-matched healthy controls.
Results: atheromatous lesions were localised in the femoropopliteal
(approximate to 60%) and aortoiliac (approximate to 40%) segments. The
number of stenosed arteries was greater than or equal to 2 and the range
of stenosis severity was between 40% and 100%. There was a significant
increase in serum Lp(a) (p = 0.000001) and a decrease in serum HDL (p =
0.000009) levels in patients compared to controls. No difference was
observed in total cholesterol, LDL-cholesterol or triglyceride. However,
the ratio of total cholesterol/HDL-cholesterol was significantly higher
(p = 0.005) in patients.
Conclusions: a dyslipidaemic serum profile, characterised by increased
Lp(a) levels and decreased HDL-cholesterol levels, is associated with
atherosclerotic occlusive disease of the lower extremities
Serum Apolipoprotein AI levels in atherosclerotic and diabetic patients
Objective: to evaluate the association between Apolipoprotein AI
(ApoAI), Apolipoprotein B100 (ApoB) and the presence of lower limb
atherosclerotic occlusive disease.
Materials and methods: serum lipids, lipoprotein fractions, ApoAI, ApoB
and Lp(a) were measured in 52 patients (28 diabetics and 24
non-diabetics) with lower limb occlusive disease. They were evaluated
according to patients’ glucose and compared with those in 75 healthy
controls.
Results: there was a significant decrease in HDL-cholesterol and ApoAI
serum levels (p = 0.000001) and an increase in Lp(a) (p = 0.000001) in
patients as compared to controls. No difference was observed in total
cholesterol, non HDL-cholesterol or triglycerides. Multiple regression
analysis revealed a significant association between low ApoAI (or HDL)
levels and the disease as well as between high Lp(a) levels and the
disease.
ApoAI (p = 0.0003), HDL-cholesterol (p = 0.00005) and total cholesterol
(p = 0.01) levels were significantly lower in diabetic patients compared
to non-diabetic patients. Lp(a) levels did not correlate with fasting
glucose concentration. Multiple regression analysis revealed a
significant association between low ApoAI (or HDL) levels and diabetes.
Conclusion: decreased ApoAI appears to be a main component of the
dyslipidaemic serum profile observed in patients with atherosclerotic
occlusive disease of the lower extremities. Increased Lp(a) levels is an
independent risk factor. Decreased HDL-cholesterol is also involved in
the dyslipidaemic profile
Association of hyperandrogenemic and metabolic phenotype with carotid intima-media thickness in young women with polycystic ovary syndrome
Polycystic ovary syndrome ( PCOS), a common endocrinopathy of women of
reproductive age, is associated with the early appearance of multiple
risk factors for cardiovascular disease, such as abdominal obesity,
dyslipidemia, and diabetes mellitus. However, premature atherosclerosis
of the carotid artery has not yet been demonstrated in young women with
PCOS. Measurement of carotid intima-media thickness (IMT) is considered
an easy and reliable index of subclinical atherosclerosis, which is
predictive of subsequent myocardial infarction and stroke. To evaluate
the cardiovascular risk of PCOS and the participation of the
hyperandrogenemic and metabolic pattern, we measured carotid IMT by
B-mode ultrasound as well as hormonal and several cardiovascular
disease-associated parameters in 75 young women with PCOS and 55
healthy, age- and body mass index-matched women. The PCOS women had
significantly increased carotid IMT (0.58 vs. 0.47 mm, P < 0.001) and
abdominal adiposity; higher levels of androgens, insulin, homeostasis
model assessment score of insulin sensitivity, and total and low-density
lipoprotein-cholesterol; and significantly lower levels of SHBG and
high-density lipoprotein-cholesterol.
In the studied population (n = 130), PCOS status, age, body mass index,
and parental history of coronary heart disease were strong positive
predictors of carotid IMT, whereas dehydroepiandrosterone sulfate was a
strong negative predictor. In PCOS patients lower
Delta(4)-androstenedione and high-density lipoprotein-cholesterol levels
were additionally strong positive predictors of carotid IMT, whereas in
control women only total cholesterol was the additional positive
predictor of carotid IMT.
In conclusion, young women with PCOS have an early increase of
cardiovascular risk factors and greater carotid IMT, both of which may
be responsible for subclinical atherosclerosis. The hyperandrogenemic
phenotype of the syndrome may attenuate the consequences of the
dysmetabolic phenotype on the vascular wall