Lege Artis Medicinae

[Disorders of despair]

BÁNFALVI Attila

OCTOBER 20, 2010

Lege Artis Medicinae - 2010;20(10)

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Lege Artis Medicinae

[Connection between fetal development and adult diseases - Long acting effects of stress affecting the mother and the fetus]

MOLNÁR Ildikó

[The stress responses affecting the mother and the fetus have a life-long consequence in the manifestation of adult metabolic disorders. The perinatal stress inducing fetal adaptation contributes to alterations in tissue structures and hormone regulations as well as could lead to intrauterine growth retardation. The newborns with low birth weight are associated with the glucocorticoid, adrenaline and insulin resistance making them postnatal susceptible to obesity, diabetes type 2 and hypertonia. The number of newborns with low birth weight increase, therefore the prevention of adult diseases originating from perinatal misprogramming represents a frequent challenge for health services and society.]

Lege Artis Medicinae

[Successful localization of an insulinoma with angiography]

BAKÓ Barnabás, LÁZÁR István, TARKÓ Erzsébet, OROSZ Péter

Lege Artis Medicinae

[Carvedilol and its antioxidant effect]

KOVÁCS Imre

[Carvedilol, the typical basic variant of the third generation beta blocker drugs is a complex adrenergic blocker that also has Ca channel blocking effects. It has no effect of the metabolism and has a pregnant antioxidant effect that is significant for cardiac and hypertension target organ protection. Its beneficial effect on cardiac decompensation, on target organ protection in patients with hypertension and on primary and secondary prevention of ischemic heart disease is proven by clinical studies. The effect of free radicals trapping - not shown by the majority of beta blockers - plays a major role in these beneficial effects. Inflammatory factors and free radicals (ROS) play a central role in cardiovascular diseases and can be regarded as prognostic markers of vascular damage. Elevated levels of glucose, lipids, or elevated intraluminal pressure triggers the production of various free radicals. The anti-inflammatory effect of carvedilol results out of its antioxidant (scavenger) and ROS suppressive effects. Besides its complex adrenergic blocking effect, this ability of carvedilol gives a molecular explanation for its efficiency proven by clinical trials.]

Lege Artis Medicinae

[A new DPP-IV inhibitor: saxagliptin]

KIS János Tibor, MÉSZÁROS Gabriella

[Saxagliptin is a selective, potent inhibitor of dipeptidyl peptidase-IV (DPP-IV). By inhibiting DPP-IV, saxagliptin reduces the degradation of endogenous incretin hormones, resulting in increased glucose-dependent insulin and decreased glucagon secretion from the pancreas islets. Clinical trials of saxagliptin as monotherapy and as combination therapy with other oral antidiabetic medications including metformin, glibenclamide, glipizide, pioglitazone and rosiglitazone have demonstrated clinical benefits in different glycaemic endpoints. Due to its glucose- dependent mechanism of action, saxagliptin as monotherapy or in combination with metformin results in a very low risk for hypoglycemia. It has also been shown to be generally well-tolerated, with not having any relevant effect on weight. The authors summarize the most important saxagliptin trials.]

Lege Artis Medicinae

[International trials of immunogenicity of H1N1 vaccines]

CSÁSZÁR Albert

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[Association between cyclothymic affective temperament and hypertension]

NEMCSIK János, BATTA Dóra, KŐRÖSI Beáta, RIHMER Zoltán

[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.]

Clinical Neuroscience

Atypical presentation of late-onset Sandhoff disease: a case report

SALAMON András , SZPISJAK László , ZÁDORI Dénes, LÉNÁRT István, MARÓTI Zoltán, KALMÁR Tibor , BRIERLEY M. H. Charlotte, DEEGAN B. Patrick , KLIVÉNYI Péter

Sandhoff disease is a rare type of hereditary (autosomal recessive) GM2-gangliosidosis, which is caused by mutation of the HEXB gene. Disruption of the β subunit of the hexosaminidase (Hex) enzyme affects the function of both the Hex-A and Hex-B isoforms. The severity and the age of onset of the disease (infantile or classic; juvenile; adult) depends on the residual activity of the enzyme. The late-onset form is characterized by diverse symptomatology, comprising motor neuron disease, ataxia, tremor, dystonia, psychiatric symptoms and neuropathy. A 36-year-old female patient has been presenting progressive, symmetrical lower limb weakness for 9 years. Detailed neurological examination revealed mild symmetrical weakness in the hip flexors without the involvement of other muscle groups. The patellar reflex was decreased on both sides. Laboratory tests showed no relevant alteration and routine electroencephalography and brain MRI were normal. Nerve conduction studies and electromyography revealed alterations corresponding to sensory neuropathy. Muscle biopsy demonstrated signs of mild neurogenic lesion. Her younger brother (32-year-old) was observed with similar symptoms. Detailed genetic study detected a known pathogenic missense mutation and a 15,088 base pair long known pathogenic deletion in the HEXB gene (NM_000521.4:c.1417G>A; NM_000521:c.-376-5836_669+1473del; double heterozygous state). Segregation analysis and hexosaminidase enzyme assay of the family further confirmed the diagnosis of late-onset Sandhoff disease. The purpose of this case report is to draw attention to the significance of late-onset Sandhoff disease amongst disorders presenting with proximal predominant symmetric lower limb muscle weakness in adulthood.

Clinical Neuroscience

Neuroscience highlights: Main cell types underlying memory and spatial navigation

KRABOTH Zoltán, KÁLMÁN Bernadette

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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The effect of sniffing Turkish coffee on olfactory disorders in COVID-19 patients: An experimental clinical study

BULBULOGLU Semra, ALTUN Yasar

The current study aimed to examine the effect of sniffing Turkish coffee on the sense of smell in COVID-19 patients. This study utilized the experiment-control method. Data were collected using a patient and disease information form and the Connecticut Chemosensory Clinical Research Center (CCCRC) Test. An experimental group of patients sniffed Turkish coffee, and the coffee’s effect on the patients’ sense of smell was examined. All data were analyzed using SPSS version 25 (IBM). Of the patients in the experimental group, 25% had moderate hyposmia, 58.3% had severe hyposmia, and 16.7% had anosmia prior to sniffing Turkish coffee. After sniffing the Turkish coffee, 13.3% of these patients regained their ability to smell normally, while 18.3% had mild hyposmia, 45% had moderate hyposmia, 6.7% had severe hyposmia, and 16.7% had anosmia. There was no difference in the control group between first and second measurement. COVID-19 patients who sniffed Turkish coffee intermittently regained some of their sense of smell for one hour. Turkish coffee is cheap, fragrant, widely available, and easy to access. Therefore, results of this study suggest that it may be recommended for treating olfactory disorder in COVID-19 patients.

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[Covid-19 associated neurological disorders]

SZÔTS Mónika, PÉTERFI Anna, GERÖLY Júlia, NAGY Ferenc

[The clinical signs of SARS-CoV-2 infection has become more recognisable in recent times. In addition to common symptoms such as fever, cough, dyspnea, pneumonia and ageusia, less common complications can be identified, including many neurological manifestations. In this paper, we discuss three Covid-19 associated neurological disorders (Case 1: Covid-19 encephalitis, Case 2: Covid-19 organic headache, Case 3: SARS-CoV-2-infection and ischaemic stroke). We emphasize in our multiple case study that during the present pandemic, it is especially important for neurologists to be aware of the nervous system complications of the virus infection, thus saving unnecessary examinations and reducing the frequency of patients’ contact with health care personnel. ]