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1-4 of 4
Johannes HULTHE
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Articles
Journal:
Clinical Science
Clin Sci (Lond) (2002) 103 (2): 123–129.
Published: 28 June 2002
Abstract
There is a lack of data on circulating levels of cell-adhesion molecules in relation to subclinical atherosclerosis measured in both the carotid and femoral arteries in humans. The aim of the present study was to investigate the relationship between clinically silent atherosclerosis and cell-adhesion molecules, and to explore the relationship between these molecules, C-reactive protein and the inflammatory cytokines interleukin-6, tumour necrosis factor-α (TNF-α), soluble TNF-α receptor p55 and soluble TNF-α receptor p75. The study group ( n = 391) consisted of clinically healthy 58-year-old men recruited from the general population. The results showed a positive trend between levels of soluble intercellular cell-adhesion molecule 1 (sICAM-1) and plaque occurrence in the carotid and femoral arteries ( P = 0.008), and also a univariate correlation between sICAM-1 levels and the composite variable of carotid and femoral intima-media thickness ( P <0.001). When adjusted for other risk factors, the relationship between sICAM-1 and intima-media thickness no longer reached statistical significance. The level of sICAM-1 was associated with those of the pro-inflammatory cytokine TNF-α, its two soluble receptors, and also interleukin-6 and C-reactive protein. Levels of soluble E-selectin and vascular cell-adhesion molecule 1 (VCAM-1) showed weak or no association with subclinical atherosclerosis and inflammatory variables. Thus, in clinically healthy middle-aged men, levels of sICAM-1, but not of soluble VCAM-1 or E-selectin, were associated with both subclinical atherosclerosis and inflammatory variables.
Articles
Journal:
Clinical Science
Clin Sci (Lond) (2002) 102 (3): 345–352.
Published: 14 February 2002
Abstract
It has been shown that a light-to-moderate intake of alcohol may enhance insulin sensitivity; a decrease in insulin sensitivity is a component of the clustering of risk factors known as the metabolic syndrome. However, previous studies have been limited to relatively small or heterogeneous study groups, or have used suboptimal methods of measuring insulin action. Hence the aim of the present study was to examine whether the metabolic syndrome (as recently defined), components of this syndrome and smoking are associated with alcohol consumption. The study was performed in a population-based sample of clinically healthy men ( n = 391), all 58 years old and not undergoing any treatment with cardiovascular drugs. Insulin-mediated glucose uptake (euglycaemic hyperinsulinaemic clamp) was measured in a subgroup of these subjects ( n = 104). Trend analysis showed no difference in alcohol intake across the groups of men with none of the criteria in the definition of the metabolic syndrome ( n = 77), men with one or more of the criteria ( n = 252) and men fulfilling all criteria ( n = 62). However, in the whole group ( n = 391), alcohol consumption was significantly positively associated with serum triacylglycerols (triglycerides), high-density lipoprotein (HDL) cholesterol and cigarette-years. Furthermore, alcohol consumption was positively associated with insulin-mediated glucose uptake ( r = 0.20, P < 0.05). In multiple regression analyses, body mass index, alcohol consumption and serum triacylglycerols were independent co-variates to insulin-mediated glucose uptake. Thus, in 58-year-old healthy men recruited from the general population, there was a significant association between alcohol consumption, serum triacylglycerols, HDL cholesterol and cigarette-years. In a subgroup of 104 subjects, alcohol consumption was independently and positively associated with insulin-mediated glucose uptake. To our knowledge, this is the first study to show an independent relationship between insulin sensitivity, as measured by the clamp technique, and alcohol intake.
Articles
Journal:
Clinical Science
Clin Sci (Lond) (2001) 101 (5): 523–531.
Published: 03 October 2001
Abstract
Women with diabetes mellitus are at high risk of myocardial infarction (MI), and it is well recognized that smoking, hypertension, hyperlipidaemia and the diabetic state itself do not fully explain this increased risk. During the last decade, growing evidence has accumulated that the immune system, with oxidized low-density lipoprotein (LDL) as a key antigen, plays an important role in the development of atherosclerosis. The aim of the present study was to explore the association between the immune response, as measured by antibody titres to malondialdehyde-treated LDL (MDA-LDL) and levels of C-reactive protein (CRP; a marker of inflammation), and diabetes mellitus and MI in women. Women (35-64 years) with diabetes ( n = 18) and non-diabetic women ( n = 46) who had been treated in hospital for MI were compared with diabetic women without MI ( n = 35) and healthy controls ( n = 70). Blood samples were collected after an overnight fast. CRP was determined with a highly sensitive immuno-enzymometric assay. IgM and IgG antibodies against MDA-LDL were analysed with a solid-phase ELISA technique. Women with diabetes but without previous MI were more similar to women with previous MI (both with and without diabetes) than to the healthy controls. Compared with healthy women, the women with diabetes and/or MI had higher IgG ( P < 0.05) and lower IgM ( P = 0.006) antibody titres against oxidized LDL and higher CRP levels ( P < 0.001), associations that were independent of other cardiovascular risk factors. These findings might indicate a differentiated immune response against modified LDL, more pronounced inflammation and a more aggressive atherosclerotic process in women with diabetes.
Articles
Journal:
Clinical Science
Clin Sci (Lond) (2001) 100 (4): 371–378.
Published: 26 February 2001
Abstract
Results from several recent reports have linked high serum C-reactive protein (CRP) levels to atherosclerotic disease and its complications. The aims of the present study were to investigate the relationship between CRP levels and subclinical atherosclerosis, as measured by ultrasound in the carotid and femoral arteries; and also to examine whether CRP levels are associated with antibodies to oxidized low-density lipoprotein (Ox-LDL). The study group ( n = 391) consisted of clinically healthy 58-year-old men recruited from the general population. CRP and antibody titres to Ox-LDL were measured by ELISA. The results showed an association between CRP and ultrasound-assessed subclinical atherosclerosis in the femoral artery ( r = 0.14, P = 0.010), and also between CRP and systolic blood pressure, diastolic blood pressure, heart rate, triglycerides, high-density lipoprotein, body mass index, waist-to-hip ratio (WHR), blood glucose, cigarette-years and antibody titres to ox-LDL ( r = 0.19, P < 0.001). In this clinically healthy population of 58-year-old men, CRP levels were associated with both intima-media thickness and plaque occurrence in the femoral artery. The association between CRP and femoral atherosclerosis was not independent of smoking, serum LDL cholesterol, or systolic blood pressure. CRP levels were independently related to abdominal obesity measured as WHR, smoking and antibody titres to Ox-LDL.