Hypertension and nephrology

[The Role of Calcium Channel Blocker Treatment in Hypertension ]

ALFÖLDI Sándor

JUNE 25, 2015

Hypertension and nephrology - 2015;19(03)

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Hypertension and nephrology

[A Practical Guidance to the Diagnostics and Treatment of Hyponatremia]

FORDÍTOTTÁK: Cseprekál Orsolya, KÓBOR Krisztina, KIS Éva, BRASNYÓ Pál, HARIS Ágnes, REUSZ György

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[Adherence to the Mediterranean Diet Improves Survival]

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[The use of beta-blockers in Hungary 2007-2014 based on data from National Health Insurance]

BARNA István, GYURCSÁNYI András

[disease, various rhythm disturbances, migraine, essential tremor case, addition to the treatment of endocrine disorders caused tachycardia and also may be used in the treatment of systolic and diastolic heart failure. Using the National Health Insurance Fund (NHIF) database, we analyzed changes in the turnover of beta-blockers used domestically between 2007 and 2014. At the beginning of the period more than 50% was metoprolol as the used active ingredient, the end of the period, nebivolol became the most frequently assigned active agent betablocker (29%). Besides nebivolol the use of bisoprolol and carvedilol increased, among the “old” beta-blockers the use of pindolol, bopindolol continuously decreases, propranolol and sotalolol consumption stagnant after the initial small decrease. Metabolic syndrome, disorders of carbohydrate metabolism, in case of sleep apnea the advantage of nebivolol is accompanied by the status of enhanced sympathetic activity and consequent reduction of RAS activation. Vasodilation, inhibition of plaque formation, reduction of platelet aggregation and anti-proliferative effects of nebivolol are its unique characteristics in the beta-blocker group. Improves insulin sensitivity, thus it is not characterized by a long-term side effects that cause diabetes. Effective reduction in the central blood pressure with nebivolol is likely to reduce the risk of complications in stroke and other related central blood pressure. Therefore, if the recommendations of the international and domestic support for considering it is not surprising that the use of metoprolol reduced such a large extent and how nebivolol covered the significant majority of the entire domestic beta-blockers market. Carvedilol was before the second and currently has become the 3rd or 4th most frequently used beta blocker. The decrease in the use of metoprolol undoubtedly caused by change in the recommendations, getting out of the subsidized products, and the appearance of the above known, new effective drugs.]

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Neuroscience highlights: Main cell types underlying memory and spatial navigation

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Interest in the hippocampal formation and its role in navigation and memory arose in the second part of the 20th century, at least in part due to the curious case of Henry G. Molaison, who underwent brain surgery for intractable epilepsy. The temporal association observed between the removal of his entorhinal cortex along with a significant part of hippocampus and the developing severe memory deficit inspired scientists to focus on these regions. The subsequent discovery of the so-called place cells in the hippocampus launched the description of many other functional cell types and neuronal networks throughout the Papez-circuit that has a key role in memory processes and spatial information coding (speed, head direction, border, grid, object-vector etc). Each of these cell types has its own unique characteristics, and together they form the so-called “Brain GPS”. The aim of this short survey is to highlight for practicing neurologists the types of cells and neuronal networks that represent the anatomical substrates and physiological correlates of pathological entities affecting the limbic system, especially in the temporal lobe. For that purpose, we survey early discoveries along with the most relevant neuroscience observations from the recent literature. By this brief survey, we highlight main cell types in the hippocampal formation, and describe their roles in spatial navigation and memory processes. In recent decades, an array of new and functionally unique neuron types has been recognized in the hippocampal formation, but likely more remain to be discovered. For a better understanding of the heterogeneous presentations of neurological disorders affecting this anatomical region, insights into the constantly evolving neuroscience behind may be helpful. The public health consequences of diseases that affect memory and spatial navigation are high, and grow as the population ages, prompting scientist to focus on further exploring this brain region.

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Simultaneous subdural, subarachnoideal and intracerebral haemorrhage after rupture of a peripheral middle cerebral artery aneurysm

BÉRES-MOLNÁR Anna Katalin, FOLYOVICH András, SZLOBODA Péter, SZENDREY-KISS Zsolt, BERECZKI Dániel, BAKOS Mária, VÁRALLYAY György, SZABÓ Huba, NYÁRI István

The cause of intracerebral, subarachnoid and subdural haemorrhage is different, and the simultaneous appearance in the same case is extremely rare. We describe the case of a patient with a ruptured aneurysm on the distal segment of the middle cerebral artery, with a concomitant subdural and intracerebral haemorrhage, and a subsequent secondary brainstem (Duret) haemorrhage. The 59-year-old woman had hypertension and diabetes in her medical history. She experienced anomic aphasia and left-sided headache starting one day before admission. She had no trauma. A few minutes after admission she suddenly became comatose, her breathing became superficial. Non-contrast CT revealed left sided fronto-parietal subdural and subarachnoid and intracerebral haemorrhage, and bleeding was also observed in the right pontine region. The patient had leucocytosis and hyperglycemia but normal hemostasis. After the subdural haemorrhage had been evacuated, the patient was transferred to intensive care unit. Sepsis developed. Echocardiography did not detect endocarditis. Neurological status, vigilance gradually improved. The rehabilitation process was interrupted by epileptic status. Control CT and CT angiography proved an aneurysm in the peripheral part of the left middle cerebral artery, which was later clipped. Histolo­gical examination excluded mycotic etiology of the aneu­rysm and “normal aneurysm wall” was described. The brain stem haemorrhage – Duret bleeding – was presumably caused by a sudden increase in intracranial pressure due to the supratentorial space occupying process and consequential trans-tentorial herniation. This case is a rarity, as the patient not only survived, but lives an active life with some residual symptoms.

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Introduction - Peripheral nerve injury (PNI) is a frequent problem among young adults. Hopefully, regeneration can occur in PNI unlike central nervous system. If nerve cut is complete, gold standard treatment is surgery, but incomplete cuts have been tried to be treated by medicines. The aim of the study was to evaluate and compare clinical and histopathological outcomes of independent treatment of each of Vitamin B12 (B12) and Vitamin D3 (D3) and their combination on sciatic nerve injury in an experimental rat model. Materials and methods - Experimental animal study was performed after the approval of BEH Ethics Committee No. 2015/10. 32 rats were grouped into four (n=8) according to treatment procedures, such as Group 1 (controls with no treatment), Group 2 (intraperitoneal 1 mg/kg/day B12), Group 3 (oral 3500 IU/kg/week D3), Group 4 (intraperitoneal 1 mg/kg/day B12+ oral 3500 IU/kg/week D3). Sciatic Functional Index (SFI) and histopathological analysis were performed. Results - SFIs of Group 2, 3, 4 were statistically significantly higher than controls. Group 2 and 3 were statistically not different, however Group 4 was statistically significantly higher than others according to SFI. Axonal degeneration (AD) in all treatment groups were statistically significantly lower than in Group 1. AD in Group 4 was significantly lower than in Group 2 and 3; there was no significant difference between Group 2 and 3. There was no significant difference between Group 1,2 and 3 in Axonolysis (A). But A of Group 4 was significantly very much lower than all others. Oedema- inflammation (OE-I) in all treatment groups were significantly lower than in Group 1; there was no significant difference between Group 2 and group 4. OE-I in Group 2 and 4 were significantly lower than in Group 3. There were no significant differences between Group 1, 2 and 3 in damage level scores; score of Group 4 was significantly lower than of Group 1. Conclusions - B12 and D3 were found effective with no statistically significant difference. But combined use of B12 and D3 improve nerve healing synergistically. We recommend combined use of B12 and D3 after PNI as soon as possible.