Lege Artis Medicinae

[THE CLINICAL PHARMACOLOGIC BASIS OF THE SAFE USE OF STATIN ANALOGS]

KERPEL-FRONIUS Sándor

JUNE 20, 2005

Lege Artis Medicinae - 2005;15(06)

[Statins, specific inhibitors of the 3-hydroxy-3-methylglutaryl- coenzyme A (HMG-CoA), decrease significantly pathologically elevated cholesterol levels. The effectiveness and the side effects of the different analogs depend on their inhibitory potency, lipid solubility, active uptake into the liver cells and on the difference in their metabolism. The statins can be divided into three groups on the basis of their clinical effectiveness: the highly effective agents are rosuvastatin and atorvastatin; simvastatin exhibits an intermediate activity, while lovastatin, pravastatin and fluvastatin are the least active drugs. The main metabolic pathways of the statins are oxidation and glucoronidation and finally the spontaneous inactivation by lactone ring formation of the glucoronidated products. Gemfibrozil increases the plasma level of all statin analogs by inhibiting the activity of UGT1A1 and UGT1A3 isoenzymes of the UDPglucoronosyltransferase. Therefore, when a statinfibrate combination is needed, fenofibrate and bezafibrate are recommended, the metabolism of which are linked to other UGT isoenzymes. Similarly elevated plasma levels are produced by inhibiting the specific cytochrome isoforms participating in the oxidation of a particular statin. Severe side effects are rarely observed. The most frequent adverse reaction is the development of myopathy of various severity. Using various statins rhabdomyolysis occurred in 0.0-0.3 cases /100 000 statin prescriptions if the already withdrawn cerivastatin is not considered. The statin+gemfibrozil combination increases the number of rhabdomyolysis approximately tenfold. The long-term benefit of statin therapy far exceeds the risk of the treatment. For achieving very low lipid target values even the most effective statins must be used in high doses. Nevertheless, this goal cannot be reached in about 20% of the cases. High dose statin treatment should be administered with the gradual increase of the dose, tight control of the patients and by meticulously selecting the drugs given simultaneously. Further development can be expected from the application of agents with new mechanisms of action, such as the cholesterol uptake inhibitor ezetimibe.]

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Lege Artis Medicinae

[SUBCONJUNCTIVAL NEMATODE INFECTION]

ACZÉL Klára, DEÁK György, FARKAS Róbert, MAJOROS Gábor

[INTRODUCTION - Nematode infection of the eye occur only sporadically in the continental area. The pathogenic parasite in these cases is usually a Dirofilaria species, mostly D. repens. CASE REPORT - A case of human subconjunctival dirofilariosis is reported, where acquisition from abroad or animal contact in the background of the infection were excluded. The surgical removal of the entire living worm resulted in the complete cure of the patient. CONCLUSION - Knowing the occurrence of Dirofilaria infection of dogs and the increasing spread of the vector mosquitoes during the summer (in towns, too), the increasing occurrence of human dirofilariosis affecting the eye and orbital area in 10-20% of the cases must be taken into account.]

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[THE PLACE OF OPEN SURGICAL INTERVENTIONS IN THE ERA OF LAPAROSCOPIC HIATAL HERNIA RECONSTRUCTION AND ANTIREFLUX SURGERY]

ALTORJAY Áron, VARGA István, SÁRKÁNY Ágnes, TÓTH Sándor, MUCS Mihály, HAMVAS Balázs, PAÁL Balázs, THAN Zoltán

[INTRODUCTION - The leading role of laparoscopy in the surgical treatment of functional diseases of the gastro-esophageal junction has become indisputable. But has the time of the “classic”, open surgical interventions really gone for good? PATIENTS AND METHODS - Between January 1., 2000 and December 31., 2004 we performed hiatal reconstruction and antireflux plastics for 186 patients. 83.3% (155/186) of the operations was performed laparoscopically, while 16.7% (31/186) with the traditional approach. The average age of patients was 46.9 years, 7% of the operations was performed on children. In case of recurrent paraoesophageal hernias the surgical plan was drawn up based on the result of the barium swallow X-ray performed after endoscopic clipping of the Z-line. In case of a brachy-esophagus, we formed the neo-esophagus by performing the Collis-Nissen operation modified by us (Neodinium magnet + plastic sliding scale) from the traditional abdominal exposure. RESULTS - The indication for hiatal reconstruction and antireflux operation was sliding hernia in 68.2%, paraesophageal hernia in 17.8% and reflux disease in 14%. We observed signs of panmural esophagitis in 22%, while latent or true brachy-esophagus in 10.7%. Antireflux procedures were grouped as Nissen type operation in 82.7%, Toupet type in 9.67%, Narbona in 2.1%, Belsey-Mark IV in 1.61%, and resection type operation in 3.76%. To narrow the diaphragmatic openings, two sutures were needed in most cases (57.1%). Conversion to laparotomy was necessary in 3.2%. We observed recurrences in 3.3% after laparoscopic interventions. In case of open operations we experienced no recurrences in the studied period. The barium swallow X-ray examination performed after endoscopic clipping of the Z-line could reveal brachy-esophagus before the operation. CONCLUSION - Open surgical interventions can not fall into oblivion even in the age of laparoscopic hiatal reconstructions and antireflux plastics. Open surgical procedures are justified even in the new milennium in cases when the patient's medical history contains upper abdominal operations - due to an increased risk of injury because of adhesions -,in cases of primarily recurrent paraesophageal hernias after an unsuccessful open and/or laparoscopic reconstruction, as well as in cases of reflux with complications.]

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