Hypertension and nephrology

[Terciary hyperparathyreosis or not? ? You cannot solve it alone: combined treatment in severe osteitis fibrosa cystica]

HERSZÉNYI Eszter, PATÓ Éva, SZALAY László, BÍRÓ Zsolt, György Andrea, DEÁK György

DECEMBER 08, 2012

Hypertension and nephrology - 2012;16(05)

[Phosphate retention, consequential rise of the phosphaturic fibroblast growth factor-23 that decreases the level of calcitriol resulting in hypocalcemia facilitates the development of secondary hyperparathyroidism (sHPT) in chronic kidney disease (CKD). Hyperphosphatemia, hypocalcemia and low calcitriol level result in increasing secretion of parathormone (PTH). While sHPT occures frequently in CKD, the development of therapy-resistant and hypercalcemic tertiary hyperparathyroidism is rare due to current therapeutic approaches. We present the case of a 41 year old, treated schizophrenic, hemodialized male patient with severe osteitis fibrosa cystica, severe hyperparathyroidism (PTH 2500 pg/ml) - considered to be tertiary - and with repeated pathologic fractures. While hospitalized, the patient was under supervised, combined therapy with the vitamin D receptor activator paricalcitol and the calcimimetic cinacalcet that resulted in marked decrease of PTH level to 1589 pg/ml. However, after discharge from the hospital due to the lack of compliance he failed to take his medications and PTH had risen to the initial level. This case demonstrates that severe hyperparathyroidism thought to be therapy resistant responds well to a combination of paricalcitol and cinacalcet however, patient compliance is essential to therapeutic success.]



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Hypertension and nephrology

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Hypertension and nephrology

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Hypertension and nephrology

[The interpretation of metabolic syndrome]

KÉKES Ede, KISS István

[The significant increase of the splanchnic ectopic fat, the disturbance of carbohidrate metabolism, atherogenic dyslipidemia and high blood pressure creates the syndrome so called deadly quartet. These components promote the early appearance of cardiovascular diseases (ischemic heart disease, stroke, peripheral artery disease, etc.) as well as the enormous growth of type 2 diabetes mellitus. It was thought, that the ectopic fat is the only background of the syndrome and the insulin resistance with hyperinsulinemia as well as the disruption of associated endocrine regulatory balance system and elevated sympathetic drive explain jointly the clinical events. We now know that cytokines released by ectopic fat issue (CRP, TNF-α, IL-6 etc.) launch processes in our organism, which contribute to the development of vascular remodelling, endothelial dysfunction and in the end to that of atherothrombotic processes. The diagnostic criteria of the syndrome were changed continuously parallel growing theoretical knowledge till 2009, when on the Harmony Conference the important components of the syndrome were accepted, but some laboratory and other parameters do not enter into everyday praxis.]

Hypertension and nephrology

[The importance of health-centered approach in the management of hypertensive patients]


[In the everyday clinical practice the main objectives are the accurate establishment of the diagnosis and evidence based treatment of diagnosed disease. Besides the accustomed, rigorously medical, simplifying aspect, the bio-psycho- social approach is gaining an increasing importance. The objective of the article is, taking modern definition of health into account, emphasizing the importance of a new approach in the complex management of patients, having primary hypertension, a disease, impairing not only target organs, as well as the whole person, seriously influencing the health status of the affected person. In the management of a hypertensive patient, besides decreasing blood pressure, preventing and treating target organ complications and coexisting diseases, we should assess the whole person impairment, the effects of environmental and personal factors, and their influence on activities of daily living and participation in the life of the society, consequently, the changes in health status. This complex approach permits alone the more complete restoration of health of an affected person.]

Hypertension and nephrology

[The history of diuretic treatment in Hungary. Part I. Imre Fodor]

RADÓ János

[The diuretic effect of mercurial compounds was discovered in 1920. However, the term of “mercurial diuresis” was created 36 years earlier by Ernő Jendrassik. Imre Fodor published his experiences with the mercurial diuretic, which has been cited by several authors worldwide. The Hungarian pharmaceutical industry also took its part from the production of the mercurial diuretic with Novurit that proved to be an excellent and worldwide well known preparation in the next 40 years. Even Imre Fodor required the repeated administration of mercurial diuresis because of his severe cardiac oedema in the last period of his life. When the drug became ineffective, i.e. developed refractory oedema, he made a “self-experiment” with the administration of ACTH to restore the sensitiveness to the mercurial diuretic on the basis of most recent American literature at that time. His experience has been published by his colleagues just before his death. Imre Fodor was an eminent clinician, a school creating internist who entered his name into the science dealing with the use of diuretics.]

All articles in the issue

Related contents


[The pathophysiological role of the cell surface calcium-sensing receptor New clinical entities and drugs, potential therapeutic targets]

TÓTH Miklós

[The extracellular calcium-sensing receptor (CaSR) was recognized and cloned a decade ago. It is a G-proteincoupled receptor that plays an essential role in the regulation of extracellular calcium homeostasis. Diseases known as familial hypocalciuric hypercalcemia, neonatal severe primary hyperparathyroidism and autosomal dominant hypocalcemia are the consequences of naturally occurring mutations of the CaSR. However, the spectrum of the CaSR diseases became more complex with the recognition of both hypo- and hypercalcemic states caused by anti-CaSR autoantibodies. Activating anti-CaSR autoantibodies have been implicated in the pathogenesis of isolated idiopathic hypoparathyroidism and of hypoparathyroidism associated with autoimmune polyglandular syndromes. Inactivating CaSR autoantibodies may cause fluctuating hypercalcemic disorder that resembles primary hyperparathyroidism. The CaSR recently became one of the most intensively investigated target of potential new drugs. Cinacalcet has been approved for the treatment of secondary hyperparathyroidism associated with chronic renal insufficiency and for the management of inoperable or metastatic parathyroid carcinoma.The CaSR may be one of the main molecular target of strontium ranelate, wich is a new antiosteoporotic compound.]

Hypertension and nephrology

[Plasma ortho-tyrosine/para-tyrosine ratio predicts hyporesponsiveness to erythropoiesis-stimulating agents in dialyzed patients]

KUN Szilárd, MIKOLÁS Esztella, MOLNÁR Gergő Attila, SÉLLEY Eszter, LACZY Boglárka, CSIKY Botond, KOVÁCS Tibor, WITTMANN István

[Objectives: Patients suffering from end-stage renal failure (ESRF) are mostly treated with erythropoiesis-stimulating agents (ESAs). They often show hyporesponsiveness to ESA, which condition is associated with elevated production of free radicals. Phenylalnine (Phe) is converted into para- and ortho-tyrosine (p- and o- Tyr) by hydroxyl free radical. o-Tyr is produced exclusively in this way. However, physiological isomer p-Tyr is formed in significantly higher amounts by phenylalaninehydroxylase, mainly in the kidney. It has been shown that p-Tyr production is decreased in ESRF. As a result, p-Tyr can be replaced by o-Tyr in proteins, e.g. in proteins playing part in signal transduction of erythropoietin. We aimed to study the association of different Tyr isoforms with ESA-responsiveness. Methods: Four groups of volunteers were involved in our cross-sectional study: healthy volunteers (CONTR; n=16), patients on hemodialysis without ESA-treatment (non-ESA-HD; n=8), hemodialyzed patients with ESA-treatment (ESA-HD; n=40) and patients on continuous peritoneal dialysis (CAPD; n=21). Plasma p-, o-Tyr and Phe levels were detected using a high performance liquid chromatography (HPLC)-method, with fluorescence detection. ESA-demand was expressed as ESA-dose, ESAdose/ body weight and erythropoietin resistance index1 (ERI1, weekly ESA-dose/body weight/hemoglobin). Multivariate regression models were used to examine predictors of ESA-demand. In these models, most of the known predictors of ESA-hyporesponsiveness were included. Results: Lower p-Tyr levels were found in dialyzed patients compared with control subjects. In contrast, o-Tyr levels and o-Tyr/p-Tyr ratios were higher in dialyzed patients. Regarding dialyzed patients, o-Tyr level and o-Tyr/p-Tyr ratio were higher in ESA-HD than in non-ESA-HD and CAPD groups. Weekly ESA-dose/body weight and ERI1 correlated with o-Tyr/p-Tyr ratio (r=0.441, p=0.001; r=0.434, p=0.001, respectively). Finally, o-Tyr/p-Tyr ratio proved to be an independent predictor of ERI1 (β=0.330, p=0.016). Discussion: Our results suggest that elevation of o-Tyr/p-Tyr ratio could be responsible for ESA-hyporesponsiveness in dialyzed patients.]

Hypertension and nephrology

[Treatment of hypertension in chronic kidney disease and in renal failure]

KISS István

[The number of patients with chronic renal disease is growing steadily over the past decade. The reason for this is the increasing number of patients developing diabetes mellitus and hypertension, diseases that have common complication of chronic kidney disease. There is evidence that in chronic kidney disease or end-stage renal disease high blood pressure is more common which has a very complex management. Renal patients were able to participate in a small number of clinical studies, so the evidence base of antihypertensive therapy from these studies is limited. Therefore professional guidelines made with thumbnail analysis are very important, which now appeared as the KDIGO recommendations in November 2012. The author of this quick presentation of the practice undertook to summarize the important messages of this paper.]

Hypertension and nephrology

[Physical training in dialysis population]


[The impaired physical activity and the related increased cardiovascular risk is caracteristic in all stages of chronic kidney diseases. The regular physical activity has a beneficial effect on the metabolic risks associated with chronic kidney disease, dialysis and poor activity lifestyle, it also has favorable effect on the inflammatory state, poor physical performance, muscle loss and can improve the quality of life and life expectancy. Accordingly, the international and Hungarian guidelines suggest at least 150 minutes physical activity with moderate intensity per week - at least five days, 30 minutes each day. But there are no particular guidelines for dialysated patients. This article, without being exhaustive, in part using our own experiences, present suggestions for the physical activity of dialysated patients.]

Hypertension and nephrology

[Chronic kidney disease and atherosclerosis]


[Accelerated cardiovascular disease is a frequent complication of chronic kidney disease. Chronic kidney disease promotes hypertension and dyslipidaemia, which in turn can contribute to the progression of renal failure. Diabetic nephropathy is a leading cause of renal failure. Hypertension, dyslipidaemia and diabetes together are the major risk factors of the development of endothelial dysfunction and progression of atherosclerosis. Inflammatory mediators are often elevated and the renin-angiotensin system is frequently activated in chronic kidney disease. Promoters of calcification are increased and inhibitors are reduced, which favors vascular calcification, an important cause of vascular injury associated with end-stage renal disease. Accelerated atherosclerosis will then lead to increased prevalence of coronary artery disease, heart failure, stroke and peripheral arterial disease.]