LAM Extra for General Practicioners

[Umbilical hernia of extreme size in decompensated hepatic cirrhosis]

NEMESÁNSZKY Elemér

APRIL 21, 2009

LAM Extra for General Practicioners - 2009;1(02)

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LAM Extra for General Practicioners

[Focus on GPs’ activities as official experts]

KRAMER Imre

LAM Extra for General Practicioners

[THE IMPORTANCE OF THE RECOGNITION AND TREATMENT OF LIPID METABOLISM DISORDERS IN THE SECONDARY PREVENTION OF CEREBROVASCULAR DISEASES]

FOLYOVICH András, HORVÁTH Eszter

[The high world prevalence of cerebrovascular diseases, and the particularly bad morbidity rates of Hungary are well known. The physiological properties of the brain make stroke prevention outstandingly important. Effective prevention will be reflected in the reduction of the late complications that are otherwise common and expensive to treat. Because of the common simultaneous development of stroke, cardiovascular and peripheral vascular diseases, overall vascular disease prevention is preferred, even if the various vascular diseases manifest in different degrees in a patient. Hungarian data also indicate the high risk of recurrence of cerebrovascular diseases, therefore, the importance of secondary prevention is obvious. Large international studies have proven the strokepreventing effect, and, by a pleiotropic drug action, additional benefits, of the efficient treatment of blood lipid disorders. Consensus conferences in recent years defined clear and even stricter lipid-lowering target values, mostly to be reached by “double inhibition”, bile acid binding resins, fibrates and nicotinic acid derivatives, beside the most common statin treatment. Neurological and stroke departments and clinics play a pivotal role in vascular prevention.]

LAM Extra for General Practicioners

[USE OF DRUGS FOR GASTRIC ACID REDUCTION IN GENERAL PRACTICE]

HAJNAL Ferenc

[In order to facilitate (general) practitioner’s therapeutic decisions, this overview reviews advantages and disadvantages of three drug classes used for acid reduction, as to antacids, histamine 2-receptor antagonists (H2RAs), and proton pump inhibitors (PPIs). The possibilities and mechanisms of gastric acid reduction are detailed. This can be achieved either by neutralization of gastric acid by systemic or non-systemic antacids, or by inhibiting acid secretion by H2RAs and PPIs. PPIs are the strongest acid reducing agents indispensable in gastro-esophageal reflux disease (GERD), eradication therapy for Helicobacter pylori ulcers and Zollinger- Ellison syndrome, and they are first choice in non-steroidal anti-inflammatory drug (NSAID) induced gastropathy, epigastric pain syndrome, and functional upper GI dyspepsia. Nonetheless, antacids and H2RAs are faster in relieving pain in the latter pain syndrome and in acute heartburn. Contraindications and adverse effects of these three drug classes are also detailed. The author has concluded that physicians’ up-to-date awareness of these compounds’ pharmacological properties contributes to their ability to tailor acid reduction therapy to patients’ individual needs. Refreshing and expanding this knowledge will finally benefit patients seen in everyday practice.]

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Related contents

Clinical Neuroscience

Late simultaneous carcinomatous meningitis, temporal bone infiltrating macro-metastasis and disseminated multi-organ micro-metastases presenting with mono-symptomatic vertigo – a clinico-pathological case reporT

JARABIN András János, KLIVÉNYI Péter, TISZLAVICZ László, MOLNÁR Anna Fiona, GION Katalin, FÖLDESI Imre, KISS Geza Jozsef, ROVÓ László, BELLA Zsolt

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.

Clinical Neuroscience

Functional neurotoxicity and tissue metal levels in rats exposed subacutely to titanium dioxide nanoparticles via the airways

HORVÁTH Tamara, VEZÉR Tünde, KOZMA Gábor, PAPP András

Introduction and aims - Nanoparticles of titanium dioxide are suspected neurotoxic agents and have numerous applications possibly resulting in human exposure by several ways including inhalation. In the present work, rats were exposed to spherical TiO2 nanoparticles of two different sizes by the intratracheal route. It was investigated how the neuro-functional alterations, detected by electrophysiological and behavioral methods, were related to the concentration of Ti in the tissue samples and what the influence of the size of the NPs was. Materials and methods - Rats (young adult Wistar males, 10/group) were exposed to TiO2 nanoparticles of ca. 10 and 100 nm diameter (suspension medium: neutral PBS with 1% hydroxyethyl cellulose) by intratracheal instillation in 5 and 18 mg/kg b.w. dose; 5 days per week for 6 weeks. Controls were instilled with saline, and vehicle controls, with the suspension medium. To see general toxicity, body weight was checked daily, and organ weights were measured at the end of experiment. Grip strength test, to assess motor function damage, was done before and after the 6-week treatment. Finally, the rats were anesthetized with urethane, spontaneous cortical activity and sensory evoked potentials were recorded, then the rats were dissected and tissue samples were taken for Ti level measurement. Results - Body weight gain indicated no general toxicity, and no significant change in the relative organ weights, except that of the lungs, was seen. However, change of time-to-fall in the grip strength test, and latency of cortical evoked po­tentials, were altered in the treated groups, indicating functional damage. Correlation of these alterations with the cortical Ti level was dissimilar for the two sizes of nanoparticles. Conclusion - The results provided further support to the functional neurotoxicity of TiO2 nanoparticles. The exact role of particle size, and the mechanisms involved, remain to be elucidated.

Lege Artis Medicinae

[Successful treatment of chronic hepatitis C infection accompanied by rare but reversible adverse effects]

ERŐSS Bálint Mihály, NEMESÁNSZKY Elemér

[INTRODUCTION - In absence of signs and symptoms characteristic of chronic hepatic disease caused by hepatitis C viral infection, its diagnosis is generally suggested by abnormal liver function tests. If viral serological activity is confirmed, combined antiviral treatment (pegylated interferon plus ribavirin) has to be considered. Antiviral treatment is accompanied by several, usually reversible adverse effects. CASE REPORT - The 62 year-old woman has had waveringly abnormal liver function results for decades. Her anamnesis included transfusions for polytraumatization that resulted in a hepatitis C virus infection. We started treatment with interferon alpha-2a plus ribavirin. At week 4 of therapy, a significant decrease in virulence and at week 12, viral negativity was confirmed, accompanied by a normalization of hepatic function markers. Because of a gradually developing anemia, beginning from month 4, the former optimal dose of ribavirin had to be reduced. At the end of week 42, severe dermatitis with fever, muscle weakness and malaise (Sweetsyndrome) developed, and antiviral therapy had to be discontinued and steroids had to be given. During a short travel abroad, the patient suffered a collaptiform episode caused by extremely high blood glucose (28.0 mmol/l). She received temporarily fractioned insulin and then combined oral antidiabetic treatment. Then, dermatosis symptoms rapidly resolved, glycemic status gradually improved, and could be controlled by low-dose metformin. Liver function tests were normal. At the end of antiretroviral treatment and 6 months later, HCV-RNA by PCR proved negative, meaning that hepatitis C virus has been eradicated successfully. CONCLUSION - Treatment with pegylated interferon alpha-2a plus ribavirin rendered viral replication undetectable at 3 months, which is - together with the normalization of abnormal liver function tests - the strongest predictor of a good outcome. The patient’s exemplary good compliance contributed to successful treatment of hepatitis C and control of these rare but reversible adverse effects.]

Lege Artis Medicinae

[STATE-OF-THE ART COMPLEX TREATMENT OF THYROID CANCERS]

LUKÁCS Géza

[Thyroid cancers derived from follicular epithelial cells are histologically classified as papillary, follicular and anaplastic. Cancers that originate from parafollicular, or C-cells, are termed medullary carcinomas. Their annual incidence is fairly low; 3 to 7 cases per 100 000 people. After the Chernobyl disaster, however, thyroid cancers have received much attention. They often occur at young age, and frequently and early give metastases. They typically grow slowly and have a good prognosis even in the metastatic stage. The main prognostic factors include age, tumour size and extent, the completeness of surgical removal, distant metastases and tumour grade. Based on these parameters, they are classified into high-risk and low-risk groups. There are no prospective randomized studies available on the optimal treatment of thyroid cancers. Their biological aggressiveness differs according to geographic location, which explaines why the management of thyroid carcinomas has not been standardized internationally. Contrary to America and Australia, in Europe there are several endemic goitre regions, and background radiation is higher. It is generally accepted that here the standard therapy of choice is total thyreoidectomy with adequate lymph node dissection followed by postoperative radioiodine ablation. It is a reasonable demand to minimize the higher morbidity associated with radical surgery (e.g., recurrent nerve palsy, postoperative hypoparathyroidism) below 1%. It is recommended that such operations are performed by experienced thyroid surgeons in centres with multidisciplinary endocrine teams.]

Lege Artis Medicinae

[UP-TO-DATE MANAGEMENT OF CHRONIC HEPATITIS B]

HORVÁTH Gábor

[Hepatitis B virus infection is a significant health problem worldwide, as well as in Hungary. The chronic infection is usually symptomless, its most dangerous risks are liver cirrhosis and hepatocellular carcinoma. The latter may occur without development of liver cirrhosis, so it means a potential complication for patients with inactive phase of infection, as well. Criteria of the indication of antiviral treatment have changed in the last years due to the flare of our knowledge about the natural history of the disease. In our days quantitative determination of hepatitis B viral nucleic acid titer is essential for diagnosis. Formerly, a HBsAg positive patient with normal liver enzymes had been regarded as inactive carrier, and antiviral treatment had not been advised. In our days, the phase of the infection and the necessity of the treatment can not be determined without measurement of nucleic acid titer. Liver biopsy and, if inflammation or fibrosis is present, antiviral treatment is indicated, if the nucleic acid titer is >20 000 IU/ml in HBeAg positive, and >2000 IU/ml in HBe negative cases, respectively. Interferon alpha is the gold standard of treatment for chronic B hepatitis. Pegylated interferon alpha-2a is used because of its better pharmacokinetic properties. Oral agents include nucleoside/ nucleotide analogues with rare and mild adverse effects, and they may be given to patients with decompensated liver disease. Their main disadvantages include the development of drug-resistance, and the very low ratio of HBsAg-anti-HBs seroconversion. Recent drugs like adefovir, entecavir and tenofovir have replaced lamivudin, which has been in use for the longest time, because they are more effective and resistance against them is less frequent.]