All patients were premedicated
C59 with midazolam. The patients were randomly divided into three groups as Group P (n=30, dexmedetomidine-propofol), Group T (n=30, dexmedetomidine-thiopenthal), Group E (n=16, dexmedetomidine-etomidate). All patients received dexmedetomidine 1 mu g.kg(-1) in 10 min. Then, the patients were administered 2.5 mg.kg(-1) propofol for Group P, 5 mg.kg-1 thiopental for Group T and 0.3 mg.kg(-1) etomidate for Group E during induction. Hemodynamic data of the patients were recorded before induction, after dexmedetomidine administration, immediately after intubation and 3, 5 and 10 minutes after intubation. Results: There was no difference between the groups according to hemodynamic ZD1839 data. Sixteen patients in Group P and 10 patients in Group T had acceptable intubation conditions. Muscle relaxant was needed in 14, 20 and 16 patients in Groups P, T and E, respectively (p smaller than 0.05). Conclusion: In conclusion, we determined that best intubation conditions without muscle relaxants were achieved with propofol-dexmedetomidine
combination. None of the patients receiving etomidate -dexmedetomidine combination could be intubated without muscle relaxants (Tab. 6, Ref. 29). Full Text in PDF www.elis.sk.”
“Solubility plays a very important role in the selection of compounds for drug screening. In this context, a QSAR model was developed for predicting water DMH1 nmr solubility of drug-like compounds. First, a set of relevant parameters for establishing a drug-like chemical space was defined. The comparison of chemical structures from the FDAMDD and PHYSPROP databases allowed the selection of properties that were more efficient in discriminating drug-like compounds from other chemicals. These filters were later on applied to the PHYSPROP database and 1174 chemicals fulfilling these criteria and with experimental solubility information available at 25 degrees C were
retained. Several QSAR solubility models were developed from this set of compounds, and the best one was selected based on the accuracy of correct classifications obtained for randomly chosen training and validation subsets. Further validation of the model was performed with a set of 102 drugs for which experimental solubility data have been recently reported. A good agreement between the predictions and the experimental values confirmed the reliability of the QSAR model. (C) 2010 Elsevier Ltd. All rights reserved.”
“Hepatic encephalopathy (HE) is a neurological disease associated with hepatic dysfunction. Current knowledge suggests that hyperammonemia, related to liver failure, is a main factor contributing to the cerebral alterations in HE and that hyperammonemia might impair signal transduction associated with post-translational modification of proteins such as tyrosine-nitration and phosphorylation.