Hypertension and nephrology

[A Simple Estimation Method is Available for our Everyday Work to Detect the Risk of Stroke]

KÉKES Ede

SEPTEMBER 20, 2015

Hypertension and nephrology - 2015;19(04)

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Hypertension and nephrology

[The role of sodium-glucose cotransporters in diabetic nephropathy]

HODREA judit, BALOGH Dóra Bianka, LÉNÁRT Lilla, KŐSZEGI Sándor, HOSSZÚ Ádám, VANNAY Ádám, WAGNER J. László, REUSZ György, SZABÓ J. Attila, FEKETE Andrea

[Diabetic nephropathy is the main cause of chronic kidney disease affecting about one-third of type 2 diabetic patients. The exact pathomechanism is not known, therefore the treatment and the prevention is still unsolved. However appropriate glycemic control and lowering blood pressure significantly slow the progression of kidney damage these treatment options are still not enough to stop renal injury. Sodium-glucose cotransporter 2 (SGLT2) inhibitors are the newest drugs in the treatment of diabetes. By inhibiting the glucose reabsorption in the proximal tubules SGLT2 inhibitors lower blood glucose level and facilitate glucosuria. This paper summarizes the effect of SGLT2 inhibitors currently approved in Europe paying particular attention to their possible renoprotective effects.]

Hypertension and nephrology

[Effect of angiotensin-converting enzyme gene insertion/deletion polymorphism on survival of hemodialyzed patients]

KISS István, SZEGEDI János, KULCSÁR Imre, AMBRUS Csaba, KERKOVITS Lóránt, TISLÉR András, KISS József Zoltán

[Introduction: There are inconsistent observations regarding the earlier studies of the connection between ACE gene I/D polymorphism and the cardiovascular mortality. In the case of hemodialyzed patients suffering from chronic kidney disease the DD polymorphism connected to the elevated ACE levels was pointed out to be connected to the mortality rate primarily in patients with diabetes. The previous observations were verified by us during the analyzation of the short-term (three year period) survival data. We hypothesized that the significance of the ACE gene I / D polymorphism in chronic kidney disease would be verified and that during long-term observations (10 year period) the previous results could be validated. Method: In our non-invasive, prospective and multicentre study clinical data was collected from 746 patients whose blood samples were genotyped for ACE gene I/D single nucleotide polymorphism. Three genotype groups (I/I, I/D és D/D) were created during the analyzation of the mortality that was done using multivariate Cox proportional hazard models. Results: The mean age of the HD patients was 54.9 years, 46,8% of all patients were female. The prevalence of diabetes was 19.3%. ACE inhibitor therapy was prescribed for 47.9% of all patients. The median duration of dialysis before the start of the study was 23.8 months (IQR 11.2-47.1). The most frequent genotype was I/D (42.6%), followed by D/D (37.7%) and I/I (19.7%) genotypes. During the ten year follow- up of patients, the median follow-up was 29.8 months (IQR 12.6-63.4). The D/D genotypes showed lower survivability (I/I vs. D/D: log-rank test: p=0.04) from the group of patients without ACE inhibitor therapy. In multivarite Cox regression models D/D genotype compared with I/I genotype only showed that it significantly determines mortality in patients with no ACE inhibitor therapy (HR 0.67, 95% CI 0.46-0.97, p=0.03). Conclusions: There was no difference in survival among unselected patients with different genotypes. Our data suggests that hemodialyzed patients with the D/D genotype might have inferior outcome, and ACE inhibitor therapy may be associated with improved survival in this subgroup.]

Hypertension and nephrology

[Case report of resistent hypertension with failed renal denervation]

ALFÖLDI Sándor, KOVÁTS Viktória, SIMONYI Gábor, MERKELY Béla, FARSANG Csaba

[A 48 year old male patient with hypertension, resistant to the combined administration of seven antihypertensive drugs had an associated hypertrophic nonobstructive cardiomyopathy. Bilateral renal denervation has been performed with the Symplicity catether of Medtronic after the exclusion of possible secondary forms of hypertension, but his blood pressure did not decrease. Preventive intracardiac cardioverter defibrillator implantation has also been performed because of progressive congestive heart failure. We planned a witnessed intake of antihypertensive medication before qualifying ABPM study but without success because of noncompliance of the patient. According to the database of the Hungarian National Health Insurance Fund (OEP) on request of his general practitioner, the patient payed for prescripted medicine only once in the previous year, on the day before his planned witnessed intake of antihypertensive medication. The witnessed intake of medication before qualifying ABPM study was finally successful two years after the renal denervation and both his office and ambulatory blood pressure decreased substantially. The witnessed intake of antihypertensive medication for the exclusion of nonadherence as a cause of therapy resistant hypertension is warranted, especially before device or operative interventions for the treatment of hypertension.]

Hypertension and nephrology

[Hypertension Treatment in Chronic Obstructive Pulmonary Disease]

FARSANG Csaba, KISS István, ANDRZEJ Tykarski, KRZYSZTOF Narkiewicz

Hypertension and nephrology

[Adherence to the Prescribed Medicines and their Dosing is Almost as Important as Reaching the Target Value in Hypertensive Patients]

KISS István, KÉKES Ede

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Although vertigo is one of the most common complaints, intracranial malignant tumors rarely cause sudden asymmetry between the tone of the vestibular peripheries masquerading as a peripheral-like disorder. Here we report a case of simultaneous temporal bone infiltrating macro-metastasis and disseminated multi-organ micro-metastases presenting as acute unilateral vestibular syndrome, due to the reawakening of a primary gastric signet ring cell carcinoma. Purpose – Our objective was to identify those pathophysiological steps that may explain the complex process of tumor reawakening, dissemination. The possible causes of vestibular asymmetry were also traced. A 56-year-old male patient’s interdisciplinary medical data had been retrospectively analyzed. Original clinical and pathological results have been collected and thoroughly reevaluated, then new histological staining and immunohistochemistry methods have been added to the diagnostic pool. During the autopsy the cerebrum and cerebellum was edematous. The apex of the left petrous bone was infiltrated and destructed by a tumor mass of 2x2 cm in size. Histological reexamination of the original gastric resection specimen slides revealed focal submucosal tumorous infiltration with a vascular invasion. By immunohistochemistry mainly single infiltrating tumor cells were observed with Cytokeratin 7 and Vimentin positivity and partial loss of E-cadherin staining. The subsequent histological examination of necropsy tissue specimens confirmed the disseminated, multi-organ microscopic tumorous invasion. Discussion – It has been recently reported that the expression of Vimentin and the loss of E-cadherin is significantly associated with advanced stage, lymph node metastasis, vascular and neural invasion and undifferentiated type with p<0.05 significance. As our patient was middle aged and had no immune-deficiency, the promoting factor of the reawakening of the primary GC malignant disease after a 9-year-long period of dormancy remained undiscovered. The organ-specific tropism explained by the “seed and soil” theory was unexpected, due to rare occurrence of gastric cancer to metastasize in the meninges given that only a minority of these cells would be capable of crossing the blood brain barrier. Patients with past malignancies and new onset of neurological symptoms should alert the physician to central nervous system involvement, and the appropriate, targeted diagnostic and therapeutic work-up should be established immediately. Targeted staining with specific antibodies is recommended. Recent studies on cell lines indicate that metformin strongly inhibits epithelial-mesenchymal transition of gastric cancer cells. Therefore, further studies need to be performed on cases positive for epithelial-mesenchymal transition.

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[The connection between the socioeconomic status and stroke in Budapest]

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[The well-known gap bet­ween stroke mortality of Eastern and Western Euro­pean countries may reflect the effect of socioeconomic diffe­rences. Such a gap may be present between neighborhoods of different wealth within one city. We set forth to compare age distribution, incidence, case fatality, mortality, and risk factor profile of stroke patients of the poorest (District 8) and wealthiest (District 12) districts of Budapest. We synthesize the results of our former comparative epidemiological investigations focusing on the association of socioeconomic background and features of stroke in two districts of the capital city of Hungary. The “Budapest District 8–12 project” pointed out the younger age of stroke patients of the poorer district, and established that the prevalence of smoking, alcohol-consumption, and untreated hypertension is also higher in District 8. The “Six Years in Two Districts” project involving 4779 patients with a 10-year follow-up revealed higher incidence, case fatality and mortality of stroke in the less wealthy district. The younger patients of the poorer region show higher risk-factor prevalence, die younger and their fatality grows faster during long-term follow-up. The higher prevalence of risk factors and the higher fatality of the younger age groups in the socioeconomically deprived district reflect the higher vulnerability of the population in District 8. The missing link between poverty and stroke outcome seems to be lifestyle risk-factors and lack of adherence to primary preventive efforts. Public health campaigns on stroke prevention should focus on the young generation of socioeconomi­cally deprived neighborhoods. ]

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