Lege Artis Medicinae

[Endothel dysfunction and hypertension]


SEPTEMBER 10, 2001

Lege Artis Medicinae - 2001;11(08-09)

[In the past two decade numerous data has been collected about the role of endothelium in the development of several cardiovascular disorders i.e. hypertension, congestive heart failure and atherosclerosis. Endothelial cells had been thought to be passive barriers only, but it turned out that through paracrine and autocrine hormone secretion they take part in modulating and regulating the vasodilator and vasoconstrictor effects being directed to vascular smooth muscle cells. The intact endothelium prevents the adhesion of platelets and monocytes, the platelet aggregation, as well as the migration and proliferation of vascular smooth muscle cells. It has been shown that both in experimental and human hypertension the endothelial function i.e. the so-called endothel-dependent vasodilatation is damaged, being the main feature of endothelial dysfunction. In spite of extensive research it is not clear whether endothelial dysfunction is a cause or a consequence of hypertension, with exact pathomechanism being also unclear. Methods, by which this important parameter could be precisely measured are under development. Researchers also examine whether recently used antihypertensive agents could improve or eliminate endothelial dysfunction and whether this effect may offer benefit to patients in terms of morbidity and mortality. This article attempts to summarize the most up-to-date information about the endothelial dysfunction research.]



Further articles in this publication

Lege Artis Medicinae

[Modern story with a moral]


Lege Artis Medicinae



Lege Artis Medicinae

[Congress of ASH, 2001.]


Lege Artis Medicinae

[Sentinel node biopsy in melanoma malignum]

OLÁH Judit, GYULAI Rolland, VARGA János, MOHOS Gábor, KAPITÁNY Klára, PAPOS Miklós, PÁVICS László, VARGA Erika, KOROM Irma, DOBOZY Attila

[INTRODUCTION - For many decades there has been no adequate treatment for affected regional lymph nodes in melanoma malignum. In the last couple of years with the implementation of the sentinel lymph node biopsy technique, it became possible to perform selective lymphadenectomy, i.e. to perform radical block dissection only in cases of histologically proven metastases in the sentinel lymph nodes. Since the lymphatic involvement in melanoma malignum is the most important prognostic factor, it is essential to treat lymphatic etastases as early as possible to get the best results. PATIENTS AND METHODS - In the past two years we have removed the sentinel lymph nodes together with primary tumors being 1 mm or thicker, ulcerated and regressive, based on clinical appearance in 120 melanoma cases. RESULTS - Of the 120 sentinel lymph node biopsies 58 contained metastatic cells. Beside tumor thickness, histological features of regression were found to correlate with the positivity of the sentinel nodes in thin melanoma cases. CONCLUSIONS - Sentinel lymph node biopsy is a relatively simple procedure with minimal complication rate. It allows early therapeutical block dissection and the selection of patients who require adjuvant therapy. Our clinical observations suggest that beside tumor thickness and ulceration, the clinical and histological signs of regression are important factors to consider for the indication of sentinel node biopsy.]

Lege Artis Medicinae

[Wegener’s granulomatosis: diagnostic questions]

CSISZÉR Eszter, SOLTÉSZ Ibolya, FÜZESI Katalin

[INTRODUCTION - Wegener’s granulomatosis is a disease of unknown origin classified as an immune vasculitis. The main pathologic feature is necrotising granulomatous small vessel vasculitis. Clinically the upper and/or lower airways are affected most often as well as the kidneys in the generalised form. The highly specific antineutrophil cytoplasmic antibodies have diagnostic significance beside the pathology and clinical symptoms. PATIENTS AND METHODS - We have studied the clinical and diagnostic characteristics of 15 cases diagnosed in our centre from the last 25 years. All patients had pulmonary manifestation. We analysed the organ involvement, clinical signs indicating the diagnosis, chest radiography, chances for biopsies of diagnostic significance and the difficulties of differential diagnostics. RESULTS - The diagnosis was made based on histological samples from the upper airways in three cases and from the lower airways in six cases (in four cases the bronchoscopic biopsies were diagnostic, in two patients thoracotomy was necessary). In six cases, clinical signs and typical organ manifestations were the basis of the diagnosis. CONCLUSION - This very rarely occurring disease which is difficult to recognise requires pulmonological examination due to the involvement of lungs. If this diagnosis comes to mind - based on findings of bilateral, multiplex, round pulmonal shadows with cavitation - the pulmonologist should search for other organ manifestations and involve respective specialists. Ideally, diagnosis is established by histopathology or by positive cytoplasmic antineutrophil cytoplasmic antibodies.]

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[Association between cyclothymic affective temperament and hypertension]


[Affective temperaments (cyclothymic, hypertymic, depressive, anxious, irritable) are stable parts of personality and after adolescent only their minor changes are detectable. Their connections with psychopathology is well-described; depressive temperament plays role in major depression, cyclothymic temperament in bipolar II disorder, while hyperthymic temperament in bipolar I disorder. Moreover, scientific data of the last decade suggest, that affective temperaments are also associated with somatic diseases. Cyclothymic temperament is supposed to have the closest connection with hypertension. The prevalence of hypertension is higher parallel with the presence of dominant cyclothymic affective temperament and in this condition the frequency of cardiovascular complications in hypertensive patients was also described to be higher. In chronic hypertensive patients cyclothymic temperament score is positively associated with systolic blood pressure and in women with the earlier development of hypertension. The background of these associations is probably based on the more prevalent presence of common risk factors (smoking, obesity, alcoholism) with more pronounced cyclothymic temperament. The scientific importance of the research of the associations of personality traits including affective temperaments with somatic disorders can help in the identification of higher risk patient subgroups.]

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[Update on diagnostics and therapy of the renal artery stenosis in 2010]


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[Methods of using telemedicine devices (smartphones, tablets) during home blood pressure measurement]


[Despite the use of advanced antihypertensive drugs, patients with hypertension are still insufficient to reach the target blood pressure. In this area, home blood pressure measurement was a significant step forward, but it is not at all how the method of home blood pressure measurement is done, on the other hand, it needs to be much closer to the doctor-patient relationship. This is the goal of introducing telemedicine tools and methods into the every day clinical practice. Three methods are known: In the first one the user uses a special application on the smartphone and writes your data into the smartphone. Solution 2 is that data are automatically transferred from the measuring device into the smartphone in the third, the smartphone itself performs the measurement. Really, the first application can be disseminated with a broadly compatible doctor-patient collaboration strategy.]

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[Measurement and value of blood pressure variability in increasing the number of patients reaching target blood pressure goal in hypertension]

KÉKES Ede, JÁRAI Zoltán, PAKSY András, KISS István

[The authors evaluate the indexes and their usefulness of the short term (ABPM), medium and long term measurement of the blood pressure variability in the care phase of the hypertensive population in Hungary by using a one-year multicentre prospective observational study. The population was split into two parts: in the active group, telemedicine tools were used to maximize the patientphysician relationship and patient education, their own activity. In the non-active group, traditional care took place. Among these, 6725, 18-64 years and 1005, 65 + years of hypertensive patients were analysed. At the start of the study, ABPM was performed in 243 cases. 1407 diabetic hypertensive patients were compared to non-diabetic patients. They have analysed previous international and domestic experiences. In the present study, the reduction of systolic and diastolic blood pressure variability was successful and significant in the 18-64 age group during the whole patients’ care phase, but a larger systolic variability reduction in the active group was achieved. In the 65+s, the systolic variability reduction was found to be significant, but the variability indexes in the active group were also smaller. In the 65+s, the diastolic variability did not change significantly in either group. In diabetic hypertension, variability indices were only reduced to 12 months. It could be clearly demonstrated that a high-level physician patient relationship has a beneficial effect on blood pressure fluctuation in hypertensive patients.]

Hypertension and nephrology

[The importance of statin therapy in hypertension]

PARAGH György, PÁLL Dénes

[Hypertension and hypercholesterolaemia often co-occur and promote early cardiovascular disease. Previous studies have shown that antihypertensive treatment may be more effective if LDL cholesterol is also reduced. This may be due to the increased expression of angiotensin-1 receptor in hypercholesterolaemia, which increases peripheral vascular resistance through angiotensin-2, and adversely affects endothelial and smooth muscle cells. Other authors indicate that high cholesterol levels increase the production of angiotensin-2 through the activation of the chymase system. High cholesterol levels increase the amount of circulating oxidized LDL which binds to the transmembrane oxidized LDL receptor (LOX- 1) also activates the angiotensin-1 receptor. In addition, angiotensin-2 has an effect on intracellular cholesterol synthesis by enhancing the key enzyme of the synthesis of intracellular cholesterol, HMG-CoA reductase. The authors present the studies that support cholesterol lowering can contribute to lowering blood pressure and other major meta-analyses in which the beneficial effects of cholesterol lowering and lipid lowering on blood pressure reductions were not proven. In the background, it may well be that these studies are not designed to evaluate the effect of cholesterol-lowering drugs on hypertension in patients with hypercholesterolaemia, and non-statin-treated patients are not randomized.]