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Biomedical subjects

M Tekeres

Publications and source records attributed to M Tekeres.

At least 37 records · Page 2Linked to original sources

Ftorafur therapy in acute pancreatitis.

The authors tested Ftorafur (N1-2'-furanidyl-5-fluorouracyl) in patients with acute pancreatitis on the basis of experimental and clinical data. The daily dosage was 200 mg (3-4 mg/kg body weight). In the course of treatment the serum and urine levels of amylase and the changes in WBC were studied. The results were compared to that obtained in patients with acute pancreatitis but were not given Ftorafur. Urine amylase levels decreased significantly in response to Ftorafur treatment over three days. The decrease of serum amylase levels and WBC was not significant in either group. The advantages of Ftorafur treatment are as follows: levels of amylase in serum and urine are normalized earlier, the duration of treatment, hence costs are decreased, Ftorafur produced a cytoprotective effect due to the inhibition of protein synthesis in the pancreas.

Acute Disease↗

Clinical studies on the mucolytic effect of mesna.

Eighty intensive care patients requiring mucolytic therapy because of pulmonary mucus retention after chest (28 cases) or thoracic (52 cases) surgery were given the drug mesna by three different methods: bronchial lavage with a mixture of mesna (5% to 10%) and lidocaine (1%) in 15 to 20 ml, 10 to 20 times a day (10 cases); instillation into the bronchial tree of 15 to 20 ml of a 5% to 10% mesna solution three to five times a day (20 cases); continuous aerosolization of four to five ampules of mesna per 24 hours with a Bennett nebulizer (50 cases). The duration of mesna therapy ranged from 2 to 21 days. The drug was found to be highly effective in all three methods; rapid fluidization of bronchial secretions was observed and aspiration of the latter was considerably facilitated. Tolerance was excellent and there were no side effects, even in cases with bronchial asthma. A particularly good effect was seen on blood-contaminated mucus. Samples of aspirated mucus were investigated by the electron spin resonance (ESR) technique to obtain structural information about the effects of mesna as compared with N-acetylcysteine. Mucolytics decrease with ESR signal, and the rate of reduction is supposed to measure the rupture of disulphide bridges and, consequently, the degree of mucus fluidization. The rate of decrease of the ESR signals is much higher after mesna.

Aerosols↗

E.E.G. and multiple unit activity during ketamine and barbiturate anaesthesia.

Cortical e.e.g. and multiple unit activity (m.u.a.) of the mesencephalic reticular formation, the anterior hypothalamic area, the basal nuclear group of the amygdala and the dorsal hippocampus were studied before and following i.p. injection of different doses of ketamine hydrochloride and a barbiturate in cats with chronically implanted electrodes. Barbiturate administration resulted in a rapid decrease in m.u.a. in the mesencephalic reticular formation which was accompanied by a significant decrease of activity in the limbic structures. No m.u.a. response was observed to visual, acoutic or somatosensory stimulation or to pain. The m.u.a. of the mesencephalic reticular formation and limbic structures increased gradually following ketamine injection. Intermittent or continuous hypersynchronous activity was characteristic in the cortical e.e.g. During the hypersynchronous activity the responsiveness of m.u.a. in the mesencephalic reticular formation, to visual and acoustic stimuli, was blocked. Somatosensory and painful stimulation, however, resulted in a significant increase in the activity both of the mesencephalic reticular formation and of the limbic neuronal pools.

Acoustic Stimulation↗