Biomedical subjects

Anca Artenie

Publications and source records attributed to Anca Artenie.

8 recordsLinked to original sources

PubMedDate not supplied

[HDL-cholesterol-- active or passive participant in the pathogenesis of atherosclerosis].

It is known that high sanguin levels of cholesterol and LDL-cholesterol (LDLc) have an important role in the pathogenesis of atherosclerosis. The treatment of hypercholesterolemia with statins and/or with fibrates have had beneficial effects on coronary heart disease and on other localization of atherosclerosis. The decreased of cholesterol and LDL-cholesterol is the most important effect of this treatment. The epidemiological studies have revealed that the treatment with statins and/or with fibrates produce an increase of HDL-cholesterol (HDLc), which is also very important in the regression of atherosclerosis. We tried in this review to explain the mechanisms of the increase of HDL-cholesterol, in concordance with the data from literature.

Cholesterol↗

PubMedDate not supplied

[Evaluation of the systolic and diastolic function of the left ventricle in patients with diabetes mellitus and microalbuminuria].

UNLABELLED: The objective of this study is to reveal the deterioration of the systolic and diastolic function of the left ventricle (LV) in patients with diabetes mellitus (DM), in correlation with type of DM, the edge and the complications of DM and the associated diagnosis. METHODS: The study included 43 patients with DM (29 patients with DM type 1 or 2 insulinodependent--DMID and 14 patients with DM type 2 nonisulinodependent--DMNID). The age of patients was between 21 years and 57 years, with a duration of DM between 1 year and 22 years. The ecocardiographic evaluation have determined 38 parameters (B mod, M mod, CWD, PWD, colour Doppler). From these parameters, 12 was used for the measurement of the systolic function of the LV and 18 was used for the determination of the diastolic function of the left ventricle. The clinical and biological exam have performed: glycaemia, proteinuria, dyslipidemic syndrome, complications of DM and ischaemic heart disease (ECG). RESULTS: The ejection fraction (EF) of the LV was ?60% in 23 patients, between 50% and 60% in 17 patients and between 40% and 50% in 3 patients. The values of MSER (mean systolic ejection rate) was between 221 ml/s şi 515 ml/s and the values of MVCF (mean velocity of circumferential shortening) was between 0.9 circ/s şi 1, 8 circ/s. The ratio of the E and A waves at the mitral valve was > 1 in 22 patients and < 1 in 21 patients. The LV isovolumic relaxation time (IVRT) was < 70 ms in 13 patients, > 100 ms in 14 patients and had normal values in 16 patients. The E wave deceleration time (EDT) was < 150 ms in 24 patients and had normal values in 19 patients. There is no connection between the systolic/diastolic function and the other determined parameters. CONCLUSIONS: The alteration of the LV systolic function was present in 20 patients from 43 patients. The LV diastolic dysfunction through relaxation troubles was present in 14 patients and the LV diastolic dysfunction through compliance trouble was present in 13 patients. A number of 16 patients had preserved (for the moment) a normal LV diastolic function. The number of patients with these two types of LV diastolic dysfunction was equal in our study. Other studies had found a predominance of LV diastolic dysfunction through compliance troubles in DM.

Adult↗

PubMedDate not supplied

[Myocardial remodeling].

Chamber remodeling and myocardial systolic dysfunction play an important role in the development of cardiac failure after myocardial infarction. The process is accompanied by qualitative and quantitative changes in the expression and reexpression of genes regulating cell growth and contractile function. The article tries to explain some of the mechanisms of the myocardial remodeling that permit the modifications and adaptation of the heart to normal and pathological conditions from a clinical point of view and, in the same time, from a molecular point of view.

Electrocardiography↗

PubMedDate not supplied

Evaluation of simvastatin antioxidant effects.

3-Hydroxy-3-methyl-coenzyme A reductase (HMG-CoA reductase) which transforms 3-hydroxy-3-methylglutaril-coenzyme A (HMG-CoA) in mevalonate, is the rate limiting enzyme in cholesterol biosynthesis. In our study, from HMG-CoA reductase's known inhibitors, we used simvastatin (ZOCOR), which is a semi synthetic derivative of the second generation. The study was performed on 25 subjects (12 men and 12 women) aged 33-67 yo, with hypercholesterolemia, which have received simvastatin, 10 mg daily for 8 months. Under treatment with simvastatin we obtained a significant decrease of total cholesterol (p < 0.0001) and an improvement of enzymatic antioxidant parameters: superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT). In conclusion, simvastatin therapy determines a significant decrease in SOD, GPx, CAT, and an increase in CAT/SOD and GPx/SOD ratios.

Adult↗

PubMedDate not supplied

[Implication of methylglyoxal in diabetes mellitus].

Methylglyoxal (MG) is an early glycation product which is implicated in genesis of diabetic complications either as a direct toxin or as a precursor for advanced glycation end products. It is metabolized via S-D-lactoylglutathione to D-lactate by means of the enzymes glyoxalase I and II, which depend on glutattione as cofactor. MG is highly reactive and can bind to and modify proteins by chemical interaction with cellular proteins, action on energy production, induce free radical generation and cell killing. That way MG play a role in the events of the development of diabetic complications.

Diabetes Complications↗

PubMedDate not supplied

[Effect of antilipemic therapy on patients with diabetes mellitus and obesity].

Fibrates are hypolipemic agents used in noninsulin dependent diabetes mellitus (NIDDM) because these drugs have no influence on glycemia control. The efficiency of fenofibrate (Lipanthyl) was studied in a group of 22 subjects, 30-70 years, obese (body mass index-BMI over 30 kg/m2) or overweight (BMI = 28-30 kg/m2) with hypertension or/and diabetes. All the patients received 200 mg fenofibrate daily, for 6 month, and they had a hypocaloric diet. We measured seric lipids. The results were compared with a control group (20 normal subjects). Under treatment, atherogenic lipids (total cholesterol, LDL-cholesterol and triglycerides) had significantly decreased (p < 0.05) and antiatherogenic fraction (HDL-cholesterol) significantly increased (p < 0.05) compared to initial values. In the mean time, the BMI has significantly decreased under fenofibrate treatment, this body mass loss having a positive influence on lipid metabolism. We observed a better therapeutically response in obese patients vs. the overweight ones, probably due to a higher prevalence of the hypertension in the second subgroup. In conclusion fenofibrate is the drug which can be choose in diabetic dyslipidemia without cardiac disease.

Adult↗

PubMedDate not supplied

[HDL-cholesterol--active or passive participant in the pathogenesis of atherosclerosis? (II)].

Animals↗

PubMedDate not supplied

[Correlation between increase of oxidative stress and microalbuminuria in type-1 diabetic patients].

Oxidative stress has an important role in genesis of diabetic complications, especially diabetic nephropathy. The aim of the study was to assess correlations between increase of oxidative stress (OS) and the development of microalbuminuria (MA) in type 1 diabetic patients. We determined the oxidative status by measuring the level of superoxide dismutase (SOD-Minanui method), catalase (CAT-Aebi method), glutathione peroxidase (GPx-Fukuzawa method) and glutathione (GSH-Ellman method) in 87 type 1 diabetic patients (44 with normal urinary protein excretion-group A and 43 with MA-group B) and 38 nondiabetic matched controls, before and 24 hours after a test effort. The results of the study point out that a decreased in activity of SOD or in levels of GSH is associated with an increased MA in type 1 diabetic patients.

Adult↗