Lege Artis Medicinae

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MATOS Lajos

JANUARY 20, 2005

Lege Artis Medicinae - 2005;15(01)

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Lege Artis Medicinae

[What is good and what is bad?]

NAGY Zsuzsa

Lege Artis Medicinae

[Report from the 2004 Congress of the American Society for Cardiology]

PFLIEGLER György

Lege Artis Medicinae

[EVIDENCE BASED ORAL ANTIDIABETIC THERAPY]

JERMENDY György

[Oral antidiabetic drugs are used in type 2 diabetic patients when diet and physical exercise have failed. The oral antidiabetic drugs available in Hungary can be classified according to their main effect. In this regard, antihyperglycaemic drugs with no hypoglycaemic potential (alfaglucosidase inhibitors, biguanides, thiazolidinedions) and drugs with a potential of insulin secretion (sulfonylureas, prandial glucose regulators) can be distinguished. Acarbose is mainly used in order to decrease the postprandial glucose excursion. Metformin is the drug of choice for obese, insulin resistant diabetic subjects while buformin is not preferable anymore since the availability of metformin. Rosiglitazone, the only thiazolidine-dion derivative in Hungary, can be used in combination therapy in diabetic subjects with clinical characteristics of the metabolic syndrome. The list of sulfonylureas contains five drugs in Hungary which enables differential therapeutical strategies to be performed. The prandial glucose regulators can be used either in monotherapy or in combination with other drugs at the relatively early stage of the disease. At present, the recommendations for treating diabetic patients with oral antidiabetic drugs can be based on clinical evidences.]

Lege Artis Medicinae

[CARCINOID TUMORS]

RÁCZ Károly

[Carcinoid tumors are rare neoplasms: they are traditionally divided into three subgroups (foregut, midgut and hindgut tumors). Despite their neuroendocrine cell origin and the similarities in their histological structure, the molecular background, pathogenesis, clinical features, diagnostic and therapeutic procedures, as well as the prognosis of carcinoid tumors located at different sites may be highly variable. Although sensitive biochemical markers (serum chromogranin A concentration, urinary 5- hydroxyindoleacetic acid excretion) and localization methods (somatostatin receptor scintigraphy, positron emission tomography) are available, a considerable number of patients are only diagnosed at the late stages of the disease. When surgical cure is not obtainable such as in cases with advanced metastatic disease, surgical procedures to reduce tumoral tissue should be still considered. At present, the most effective drugs for the symptomatic treatment of carcinoid tumors are somatostatin analogues (octreotide, lanreotide). In addition to their beneficial effect on clinical symptoms they may stabilize tumor growth for many years and rarely, tumor regression is produced. Radioisotope-labelled somatostatin analogues are presently under clinical evaluation, which may offer new therapeutic means for patients with carcinoid tumors.]

Lege Artis Medicinae

[SCIENTIFIC DIGEST]

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[Urinary diversion - bladder replacement]

RÉPÁSSY Dénes

[Author gives a review of the surgical procedures, advantages and disadvantages of urinary diversion and bladder replacement techniques. Orthotopic bladder replacement is presented in detail, outlining also the complications. The questions affecting general practitioners, as well as gynaecologists, surgeons and internists are also discussed at length. The different techniques of bladder replacement have become widely accepted in Hungary within the past few years. It is important therefore that all physicians involved in the care of these patients become well acquainted with the possible complications and the changes in the lifestyle of these patients.]

Hypertension and nephrology

[Results of the CONADPER-HU program: blood pressure reduction, achieving target blood pressure, factors affecting the target, characteristics of medication]

KISS István, KÉKES Ede, PAKSY András, SZEGEDI János

[The authors analysed in detail the data of 4071 “active” and 2654 “nonactive” groups of patients. In the 18-64 age group, systolic and diastolic blood pressure was significantly reduced during the first three months of the baseline, and maintained for a further year. The largest systolic pressure drop was achieved by members of the active group using the Medigen application. The blood pressure target rate (< of 140/90 mmHg) in the active and non-active group was significantly higher than the baseline at all visit times (above 70%) and this decrease could be maintained throughout the observation period. Here the most favorable results were also found in Medigen software applications. Over the age of 65, reaching the target blood pressure increased significantly in the first three months as well, but due to the significantly uneven number of the two groups, the data received was only considered as approximate value. Main factors of non-achievement of target blood pressure: obesity, alcohol consumption, diabetes mellitus and peripheral vascular disorder, and the fact that the individual is male. Increases the access probabilities of Medigen users by 21% compared to non-users of the active group. Compared to the inactive group, this chance increase is 31%. The difference in target blood pressure reach between the active and non-active group was even more pronounced in diabetic hypertensive patients. The analysis demonstrates that drug treatment in domestic and ESH guidelines is fully consistent with and reflects well on domestic clinical practice.]

Clinical Neuroscience

[Regulation of water transport in brain oedema]

DÓCZI Tamás, SCHWARCZ Attila, GALLYAS Ferenc, BOGNER Péter, PÁL József, SULYOK Endre, GÖMÖRI Éva, VAJDA Zsolt

[The study gives an overview on the regulation of cerebral water content and of brain volume. The molecular mechanisms of the development and resolution of various oedema forms are discussed in detail. The physiological and pathophysiological role of the recently discovered molecular water channel proteins aquaporin-1 (AQP1) and aquaporin-4 (AQP4) as well as the importance of central neuroendocrine regulation by vasopressin and atriopeptin are reviewed based on the relevant literature and personal studies. Quantitative water maps based on the combination of multicompartment- T2, diffusion weighted MRI and T1 studies have proven to be powerful tools for studying new drugs against brain oedema brought about by various neuropathological conditions and for testing their efficacy both in animal experimental and clinical conditions. Non-peptide vasopressin antagonists, atriopeptin agonists and drugs targeting AQP4 are potential new families of oedema-decreasing drugs.]

Hypertension and nephrology

[Deeper analysis of nebivolol effects]

KÉKES Ede

[Author presents the formation of nitric oxide as a largest vasodilator of human endothelium as well as the endothelial dysfunction a result of formation at adrenergic stimulus. He demonstrates in detail the benefits of selective β-1 blocker and β-3 adrenergic agonist nebivolol in the vascular system. This drug has also receptor independent effects. Complex effects of nebivolol causes vasodilation, inhibits oxidative stress and it is capable to neutralize the effects of free oxygen radicals and as a result the endothelial function will be better. Its clinical effects and the less wellknown beneficial properties are listed. The use of drug is discussed especially in hypertensives with smoking, COPD or PAD. The β-3 agonist effect provides positive reactions not only in the adipocytes and the myocardial tissue. but in the skeletal muscle as well: Increase in energy expenditure - as a compensatory mechanism - is increased in obesity and the glucose uptake + storage on skeletal muscle cells are increased in hyperglycemia. The insulin sensitivity will be better, leptin level is decreased, adiponectin level is increased by nebivolol. It is assumed this drug has antidiabetic and anti-obesity effects.]

Lege Artis Medicinae

[PRIMARY CARE EVALUATIONS OF THE NUTRITION AND HEALTH OF THE ELDERLY]

RURIK Imre

[In this comprehensive study the worldwide medical and social consequences of aging population are analysed. The physiological changes, deteriorations in the elderly, the relation of nutritional habits and lifestyle are also discussed according to the results of major epidemiological studies. The nutrition related morbidities, including obesity, diabetes, cardiovascular diseases are analysed in detail. The most important observations of Europe-wide studies and the limited Hungarian epidemiological surveys are compared. The author also emphasizes the importance of medical support, health education and nutritional advices in different generations, especially in the elderly population.]