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We investigated serum concentration of C-reactive protein (CRP) and measures of adiposity in 30 patients with type 2 diabetes mellitus (15 male, 15 female) and 30 age and sex-matched apparently healthy subjects. CRP concentration was determined by laser nephelometry (BN II Analyzer) and CardioPhase high-sensitivity CRP (DADE BEHRING) was used as reagent which consists of polystyrene particles coated with mouse monoclonal antibodies to CRP. Results have shown that serum CRP concentration in patients with type 2 diabetes mellitus was statistically significantly higher compared to control group of healthy subjects (p<0,05). Body mass index (BMI) correlated significantly with serum concentration of CRP in patients with type 2 diabetes mellitus (r=0.614; p<0.001). Statistically significant positive correlation was also found between waist to hip ratio and serum CRP concentration in patients with type 2 diabetes mellitus (r=0.426; p<0.05). Elevated serum CRP concentration in patients with type 2 diabetes mellitus is probably caused by the presence of chronic low-grade inflammation in these patients. It is possible that determined increase of CRP concentration reflects activation of innate immune system components in patients with type 2 diabetes mellitus. Implications of established association between measures of adiposity and serum CRP level in type 2 diabetes mellitus remain unclear.

Studies indicate that inflammatory mechanisms may play an important role in the pathogenesis of Alzheimer's disease (AD). C-reactive protein (CRP), marker and mediator of inflammation, has been detected in lesions typical for the affected areas of AD brain. There have been conflicting reports on serum CRP concentration in AD. Scarce data exist on association of CRP and measures of adiposity in AD patients. Thus, we investigated serum CRP concentration in fifteen overweight institutionalized patients with probable AD and fifteen age-matched control subjects. Body mass index (BMI) and waist/hip ratio (WHR) were calculated for each subject included in the study. Age, systolic and diastolic blood pressure, BMI and WHR did not differ significantly between the two groups. Serum CRP concentration was significantly higher in patients with AD compared to controls (p<0.0001). Although not significant, positive correlations between serum levels of CRP and BMI and WHR were found. Obtained results support the notion that low-grade inflammation is present in patients with AD. Absence of significant association between CRP and measures of total and central adiposity in overweight AD patients needs further investigation and explanation.

E. Kučukalić-Selimović, Almira Hadžović-Džuvo, E. Nakas-ićindić, Zdenka Drazeta

Growth hormone exerts several metabolic effects, including effects on proteins, fats and carbohydrates. Among the many metabolic activities of GH, two contradictory actions were described: acute and early insulin-like activity and chronic and late anti-insulin like activity also called diabetogenic activity. A dramatic increase in plasma concentration of GH was found during endurance exercise, but its role during exercise is not well known. According to its metabolic effects a possible role of growth hormone may be in maintenance of glucose level during exercise. The aim of this study was to analyze dynamics of changes in GH and glucose levels during acute workload and in the recovery period, in a group of well trained athletes. All the subjects exercised for 30 minutes on cycle ergometer in sitting position (work intensity 50% of VO2 max, RPM 60/min). Serum GH concentrations were measured by IRMA (immunoradiometric assays) method in blood samples obtained at rest and 6-min intervals during exercise, and 15-min intervals during recovery period. Serum glucose levels were determined by standard enzymatic method glucose oxidase (GOD PAP) at the same intervals. There were no correlations between serum GH and glucose levels either during exercise or in the recovery period. There were no differences between glucose levels during exercise, so we can not exclude possible role of GH in glucose concentration maintenance.

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