Lege Artis Medicinae

[Hepatic dysfunction in pregnancy]

NEMESÁNSZKY Elemér, HRUBY Ervin

DECEMBER 20, 2007

Lege Artis Medicinae - 2007;17(12)

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Lege Artis Medicinae

[Sore throat]

HIRSCHBERG Andor

Lege Artis Medicinae

[The effects of nebivolol therapy on respiratory function and quality of life]

BENCZÚR Béla

Lege Artis Medicinae

[A CASE OF MISIDENTIFIED SYNCHRONOUS COLON CANCER]

CSERNI Gábor, BORI Rita, OLÁH Csaba, HAUSINGER Péter, TUSA Magdolna, MARKÓ László, SVÉBIS Mihály

[INTRODUCTION - Synchronous colorectal cancers are not uncommon, therefore, total colonoscopy is indicated even in cases of distally located large bowel carcinomas. CASE REPORT - An 84-year-old man had emergency surgery because of bowel obstruction and a node-negative carcinoma of the sigmoid colon was removed according to Hartmann. Before the reconstruction of bowel continuity, colonoscopy revealed a relatively small polypoid tumour in the right colon, unsuitable for colonoscopic polypectomy. Two localization clips were then inserted at the site of the endoscopic biopsy that later resulted in the diagnosis of adenocarcinoma. At the time of the reconstruction surgery, an appendectomy was also performed and, though the clips were not found, the polypoid tumour was removed through appendectomic orifice. The polyp thus removed, however, proved to be an adenoma. A repeated colonoscopy and biopsy confirmed both the localization clips and the malignant nature of the remaining right-sided lesion, which was finally removed with right hemicolectomy. CONCLUSION - Anatomic localization of rightsided colon cancers by colonoscopy is often imprecise. The correct identification of a malignant tumour may be compromised by a nearby benign lesion. If a lesion was labelled by some means, the localization sign should be identified both intraoperatively and during the gross pathologic work-up, asking for external help (e.g., radiology in case of a metal clip) if necessary.]

Lege Artis Medicinae

[MYELODYSPLASTIC SYNDROMES - NEW THERAPEUTIC OPTIONS]

GADÓ Klára

[Myelodysplastic syndrome is a heterogeneous group of acquired clonal disorders of the haematopoietic stem cell characterized by ineffective haematopoiesis, peripheral cytopenia, and a high risk of progression to acute leukaemia. It is a common malignant disease with an increased incidence in the elderly population. Classification is based on a 1999 WHO recommendation, in which morphological features as well as clinical and cytogenetic characteristics are taken into account. Combined with the International Prognostic Scoring System (1997), it is suitable to predict prognosis and response to therapy. Clinical features include symptoms caused by anaemia, infections, and bleeding. Diagnosis is based on peripheral cytopenia and dysplastic morphology, as well as normal or increased cellularity in the bone marrow, with more than 10% of dysplastic cells. The verification of cytogenetic abnormalities is important both for confirming the diagnosis and predicting the prognosis. When designing the treatment strategy, it is essential to take the risk of leukaemia into account. On the other hand, the general state of the patient and the presence of accompanying diseases should also be considered. The goal of the treatment is to increase cell count and to decrease transfusion requirement, eventually to improve quality of life. Supportive therapy is an essential part of the management. In addition, growth factors, immunosuppressive and immunomodulatory agents, low-dose chemotherapy may be applied. Today, cure can only be achieved by allogenic stem cell transplantation. Recent findings in the epigenetic intracellular regulation allowed the definition of new therapeutic targets to develop drugs such as inhibitors of DNA methyltransferase and histone deacetylase.]

Lege Artis Medicinae

[THE ROLE AND METHODS OF IMPROVING INSULIN SENSITIVITY AND BETA-CELL FUNCTION IN TYPE 2 DIABETES]

GYIMESI András, TÁRNOK Enikő, TAYBANI Zoltán

[Increased knowledge on the pathogenesis of type 2 diabetes has considerably transformed the principles and practice of treatment. Insulin resistance and beta-cell dysfunction, the two main components of the pathogenesis both play a role in the conversion of normal glucose metabolism, through impaired glucose tolerance, into type 2 diabetes. Decreased insulin sensitivity, with or without beta-cell dysfunction, is present in the vast majority cases, therefore, its treatment is essential. Physical activity is known to improve insulin sensitivity. The primary action of the recommended first-line pharmacological agent metformin is the inhibition of hepatic glucose production but it also moderately stimulates muscle glucose uptake. Glitazones are insulin sensitizers that increase glucose uptake in muscle and adipose tissue and moderately decrease hepatic glucose production. Some evidence suggests that α-glucosidase inhibitors and also certain insulin secretagogues can improve the effect of insulin. Early detection of the pathologic state and an efficient treatment to improve both insulin sensitivity and beta-cell function are essential in order to slow the progression and prevent the development of complications in type 2 diabetes.]

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Cognitive dysfunction (CD) is a common non-motor symptom of Parkinson’s disease (PD). Alexithy­mia is a still poorly understood neuropsychiatric feature of PD. Cognitive impairment (especially visuospatial dysfunction and executive dysfunction) and alexithymia share com­mon pathology of neuroanatomical structures. We hypo­thesized that there must be a correlation between CD and alexithymia levels considering this relationship of neuroanatomy. Objective – The aim of this study was to evaluate the association between alexithymia and neurocognitive function in patients with PD. Thirty-five patients with PD were included in this study. The Toronto Alexithymia Scale–20 (TAS-20), Geriatric Depression Inventory (GDI) and a detailed neuropsychological evaluation were performed. Higher TAS-20 scores were negatively correlated with Wechsler Adult Intelligence Scale (WAIS) similarities test score (r =-0.71, p value 0.02), clock drawing test (CDT) scores (r=-0.72, p=0.02) and verbal fluency (VF) (r=-0.77, p<0.01). Difficulty identifying feelings subscale score was negatively correlated with CDT scores (r=-0.74, p=0.02), VF scores (r=-0.66, p=0.04), visual memory immediate recall (r=-0.74, p=0.01). VF scores were also correlated with difficulty describing feelings (DDF) scores (r=-0.66, p=0.04). There was a reverse relationship bet­ween WAIS similarities and DDF scores (r=-0.70, p=0.02), and externally oriented-thinking (r=-0.77,p<0.01). Executive function Z score was correlated with the mean TAS-20 score (r=-62, p=0.03) and DDF subscale score (r=-0.70, p=0.01) Alexithymia was found to be associated with poorer performance on visuospatial and executive function test results. We also found that alexithymia was significantly correlated with depressive symptoms. Presence of alexithymia should therefore warn the clinicians for co-existing CD.

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Electrophysiological investigation for autonomic dysfunction in patients with myasthenia gravis: A prospective study

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Myasthenia gravis (MG) is an autoimmune disorder of neuromuscular transmission. Autonomic dysfunction is not a commonly known association with MG. We conducted this study to evaluate autonomic functions in MG & subgroups and to investigate the effects of acetylcholinesterase inhibitors. This study comprised 30 autoimmune MG patients and 30 healthy volunteers. Autonomic tests including sympathetic skin response (SSR) and R-R interval variation analysis (RRIV) was carried out. The tests were performed two times for patients who were under acetylcholinesterase inhibitors during the current assessment. The RRIV rise during hyperventilation was better (p=0.006) and Valsalva ratio (p=0.039) was lower in control group. The SSR amplitudes were lower thereafter drug intake (p=0.030). As much as time went by after drug administration prolonged SSR latencies were obtained (p=0.043).Valsalva ratio was lower in the AchR antibody negative group (p=0.033). The findings showed that both ocular/generalized MG patients have a subclinical parasympathetic abnormality prominent in the AchR antibody negative group and pyridostigmine has a peripheral sympathetic cholinergic noncumulative effect.

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Delirium is a syndrome frequently encountered in intensive care and associated with a poor prognosis. Intensive care delirium is mostly based on general and palliative intensive care data in the literature. In this study, we aimed to investigate the incidence of delirium in coronary intensive care unit (CICU), related factors, its relationship with inhospital and follow up prognosis, incidence of age-related delirium and its effect on outcomes. This study was conducted with patients hospitalized in CICU of a tertiary university hospital between 01 August 2017 and 01 August 2018. Files of all patients were examined in details, and demographic, clinic and laboratory parameters were recorded. Patients confirmed with psychiatry consultation were included in the groups of patients who developed delirium. Patients were divided into groups with and without delirium developed, and baseline features, inhospital and follow up prognoses were investigated. In addition, patients were divided into four groups as <65 years old, 65-75 yo, 75-84 yo and> 85 yo, and the incidence of delirium, related factors and prognoses were compared among these groups. A total of 1108 patients (mean age: 64.4 ± 13.9 years; 66% men) who were followed in the intensive care unit with variable indications were included in the study. Of all patients 11.1% developed delirium in the CICU. Patients who developed delirium were older, comorbidities were more frequent, and these patients showed increased inflammation findings, and significant increase in inhospital mortality compared to those who did not develop delirium (p<0.05). At median 9-month follow up period, rehospitalization, reinfarction, cognitive dysfunction, initiation of psychiatric therapy and mortality were significantly higher in the delirium group (p<0.05). When patients who developed delirium were divided into four groups by age and analyzed, incidence of delirium and mortality rate in delirium group were significantly increased by age (p<0.05). Development of delirium in coronary intensive care unit is associated with increased inhospital and follow up morbidity and mortality. Delirium is more commonly seen in geriatric patients and those with comorbidity, and is associated with a poorer prognosis. High-risk patients should be more carefully monitored for the risk of delirium.

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Neuroscience highlights: The mirror inside our brain

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Over the second half of the 19th century, numerous theories arose concerning mechanisms involved in understanding of action, imitative learning, language development and theory of mind. These explorations gained new momentum with the discovery of the so called “mirror neurons”. Rizzolatti’s work inspired large groups of scientists seeking explanation in a new and hitherto unexplored area of how we perceive and understand the actions and intentions of others, how we learn through imitation to help our own survival, and what mechanisms have helped us to develop a unique human trait, language. Numerous studies have addressed these questions over the years, gathering information about mirror neurons themselves, their subtypes, the different brain areas involved in the mirror neuron system, their role in the above mentioned mechanisms, and the varying consequences of their dysfunction in human life. In this short review, we summarize the most important theories and discoveries that argue for the existence of the mirror neuron system, and its essential function in normal human life or some pathological conditions.

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[Family planning in multiple sclerosis: conception, pregnancy, breastfeeding]

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[Family planning is an exceptionally important question in multiple sclerosis, as women of childbearing age are the ones most often affected. Although it is proven that pregnancy does not worsen the long-term prognosis of relapsing-remitting multiple sclerosis, many patients are still doubtful about having children. This question is further complicated by the fact that patients – and often even doctors – are not sufficiently informed about how the ever-increasing number of available disease-modifying treatments affect pregnancies. Breastfeeding is an even less clear topic. Patients usually look to their neurologists first for answers concerning these matters. It falls to the neurologist to rationally evaluate the risks and benefits of contraception, pregnancy, assisted reproduction, childbirth, breastfeeding and disease modifying treatments, to inform patients about these, and then together come to a decision about the best possible therapeutic approach, taking the patients’ individual family plans into consideration. Here we present a review of relevant literature adhering to international guidelines on the topics of conception, pregnancy and breastfeeding, with a special focus on the applicability of approved disease modifying treatments during pregnancy and breastfeeding. The goal of this article is to provide clinicians involved in the care of MS patients with up-to-date information that they can utilize in their day-to-day clinical practice. ]