24 results on '"D. Milovan"'
Search Results
2. Potentials and prospects for implementation of renewable energy sources in Serbia
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D Milovan Vukovic, T Dejan Riznic, and M Njegos Dragovic
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potential ,020209 energy ,lcsh:Mechanical engineering and machinery ,utilization ,Biomass ,02 engineering and technology ,7. Clean energy ,12. Responsible consumption ,Natural gas ,Environmental protection ,11. Sustainability ,0202 electrical engineering, electronic engineering, information engineering ,lcsh:TJ1-1570 ,Wind power ,Renewable Energy, Sustainability and the Environment ,business.industry ,Geothermal energy ,Solar energy ,sustainability ,renewable energy ,Renewable energy ,13. Climate action ,Greenhouse gas ,strategies ,Sustainability ,Environmental science ,business - Abstract
Serbia is dependent on imports of crude-oil and natural gas, but is endowed by reserves of lignite and the potential of renewable energy sources. Serbia has a strategy to reduce greenhouse gas emissions in the energy sector and to increase the share of renewable in gross final energy production 27% by 2020. Serbia’s total estimated technically usable potential of renewable energy sources is 5.65 Mtoe per year. Biomass has the highest potential for use in Serbia (3.448 Mtoe), followed by hydro power (1.679 Mtoe), solar energy (0.240 Mtoe), geothermal energy (0.180 Mtoe), and wind energy (0.103 Mtoe). This paper presents the potential of renewable energy sources available in Serbia, with current status of their use and prospects for further exploitation. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 179013: Sustainability of the Identity of Serbs and National Minorities in the Border Municipalities of Eastern and Southeastern Serbia]
- Published
- 2019
3. Synthetic route towards potential bivalent ligands possessing opioid and D2/D3 pharmacophores
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Z Jelena Penjisevic, V Sladjana Kostic-Rajacic, Ivana I. Jevtić, and D Milovan Ivanovic
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heterocycles ,Aryl ,General Chemistry ,N-alkylation ,piperidine ,piperazine ,010402 general chemistry ,01 natural sciences ,Combinatorial chemistry ,Bivalent (genetics) ,0104 chemical sciences ,lcsh:Chemistry ,chemistry.chemical_compound ,Piperazine ,lcsh:QD1-999 ,chemistry ,Opioid ,Dopamine receptor ,Dopamine ,analgesics ,medicine ,Piperidine ,Pharmacophore ,dopaminergic ,medicine.drug - Abstract
A scalable, cost-efficient and simple synthetic pathway towards potential bivalent opioid/dopamine receptor ligands was developed and optimized. Three novel compounds that contain both opioid and dopamine pharmacophores linked by the four methylene group chain were synthesized in 33, 35 and 39 % overall yield after a four-step synthetic route starting from three commercially available N-aryl piperazines. The anilino piperidine precursor was easily prepared in three steps, as previously published, starting from 4- piperidone. The synthesis presented in this paper could be of interest for heterocyclic and general organic chemistry. The newly designed compounds possessing two pharmacophores, opioid and D2/D3, are potentially useful pharmacological probes. Of particular interest would be the simultaneous binding to both opioid and D2/D3 receptors, and the resulting pharmacological responses may be useful for the further understanding of tolerance and dependence phenomena in opioid clinical use and/or abuse. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 172032]
- Published
- 2019
4. The influence of the casting process characteristics on the microstructure and the mechanical properties of the multicomponent brass alloy
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Jasmina Petrović Lj., A Srba Mladenović, I Ivana Marković, S Uroš Stamenković, and D Milovan Stanković
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010302 applied physics ,Materials science ,Alloy ,Metallurgy ,02 engineering and technology ,engineering.material ,021001 nanoscience & nanotechnology ,Microstructure ,01 natural sciences ,Brass ,visual_art ,0103 physical sciences ,engineering ,visual_art.visual_art_medium ,0210 nano-technology - Published
- 2019
5. μ-opioid/D2 dopamine receptor pharmacophore containing ligands: Synthesis and pharmacological evaluation
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V Sladjana Kostic-Rajacic, Z Jelena Penjisevic, Ivana I. Jevtić, R Katarina Savic-Vujovic, D Milovan Ivanovic, P Dragana Srebro, and M Sonja Vuckovic
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Stereochemistry ,010402 general chemistry ,01 natural sciences ,lcsh:Chemistry ,chemistry.chemical_compound ,Dopamine ,Radioligand ,medicine ,heterobivalent ,dopaminergic ,Dopaminergic ,opioids ,General Chemistry ,piperidine ,piperazine ,0104 chemical sciences ,Piperazine ,chemistry ,lcsh:QD1-999 ,Dopamine receptor ,dopami-nergic ,analgesics ,Piperidine ,Pharmacophore ,Linker ,medicine.drug - Abstract
Herein, the synthesis and pharmacological evaluation of 13 novel compounds, designed as potential heterobivalent ligands for μ-opioid receptor (MOR) and dopamine D2 receptors (D2DAR), are reported. The compounds consisted of anilido piperidine and N-aryl piperazine moieties, joined by a variable-length methylene linker. The two moieties represent MOR and D2DAR pharmacophores, respectively. The synthesis encompassed four steps, securing the final products in 28–42 % overall yields. The approach has a considerable synthetic potential, providing access to various related structures. Pharmacological tests involved in vitro competitive assay for D2DAR using [3H] spiperon, as a standard radioligand, and in vivo antinociceptive tests for MOR. The measured dopamine affinities were modest to low, while antinociceptive activity was completely absent. Therefore, the compounds of the general structure prepared in this research are unlikely to be useful as opioid–dopamine receptor heterobivalent ligands. У овом раду је приказана синтеза и фармаколошко испитивање 13 нових једињења, дизајнираних са циљем да буду потенцијални бивалентни лиганди за μ-опиоидни рецептор (MOR) и допамински D2 рецептор (D2DAR). Једињења се састоје од анилидо-пиперидинских (МОR фармакофора) и N-арилпиперазинских остатака (D2DAR фармакофора), повезаних метиленским ланцем променљиве дужине. Синтеза је обухватала четири корака, обезбеђујући крајње производе у укупним приносима од 28 до 42 %. Афинитет везивања за D2DAR одређен је in vitro тестом компетиције користећи [3H] спиперон као стандардни радиолиганд док је антиноцицептивна (опиоидна) активност испитана in vivo антиноцицептивним тестом. Активности новосинтетисаних једињења ка D2DAR биле су умерене до ниске, док је антиноцицептивна активност у потпуности изостала.
- Published
- 2020
6. Calculation of absorbed dose due to the 90Y-DOTATOC peptide receptor radionuclide therapy by MCNP5/X
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Z Dragana Krstic, Z Marija Jeremic, D Milovan Matovic, R Dragoslav Nikezic, and B Suzana Pantovic
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peptide receptor radionuclide therapy ,Peptide receptor ,dosimetry ,Chemistry ,business.industry ,90Y-DOTATOC ,3. Good health ,Monte Carlo simulations ,Nuclear Energy and Engineering ,Absorbed dose ,Radionuclide therapy ,lcsh:QC770-798 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Safety, Risk, Reliability and Quality ,Nuclear medicine ,business - Abstract
Strong beta emitters, like 90Y, 177Lu labelled peptide, are used for treatment of neuroendocrine tumours where there is a good expression of somatostatin receptors. In this work, MCNP5/X computer software and ORNL human phantoms were used to calculate absorbed dose due to 90Y labelled DOTATOC in the peptide receptor radionuclide therapy. Tumour was considered as a sources of beta radiation and represented as a sphere with diameter of 1-4 cm and 5 cm in liver, pancreas, and lungs. Results are expressed as absorbed dose per unit of cumulated activity, S – value in units mGy·(MBq·s)–1. The far largest dose is in tumour itself, then in organ which contains the tumour. Doses in other organs, where the metastasis are the most frequent, due to the bremsstrahlung radiation, are much smaller and could be neglected. The largest dose, 8.66·10–3 mGy·(MBq·s)–1 was obtained for tumour with size of 3 cm. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 171021]
- Published
- 2018
7. Alarm system for surveillance of patients receiving high doses of radioiodine (131I) therapy in the case of unauthorised abandoning of a controlled area
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D Miroslav Ravlic, Z Marina Vlajkovic, M Slobodan Jankovic, Z Marija Jeremic, and D Milovan Matovic
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medicine.medical_specialty ,Alarm device ,Equivalent dose ,business.industry ,alarm system ,Radioiodine therapy ,IP camera ,3. Good health ,radioiodine ,patient behavior ,ALARM ,Nuclear Energy and Engineering ,Radionuclide therapy ,medicine ,High doses ,lcsh:QC770-798 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Radiology ,Safety, Risk, Reliability and Quality ,business ,Sensitivity (electronics) - Abstract
After receiving high doses of radioiodine the patients have to remain isolated within the “restricted area”, until the radioactivity of the body drops below a certain level. The aim of this paper was to present our alarming system designed to discover patients who attempt to abandon the “restricted area” and inform medical staff about the event. The system consists of a survey-meter with a pancake probe directed towards the corridor. The survey-meter is connected to a trigger circuit which gives a signal in the case when the measured count rate exceeds a preset value. This signal sets “on” the alarm device, blinking light, programmable siren and IP camera, in order to warn the patient and inform the personnel when such a case occurs. In order to test the consistency and sensitivity of our system we measured ten times the ambient dose equivalent, H*(10), from the source of 925 MBq (25 mCi) 131I, kept at a distance of 1 m. The average ambient dose equivalent was 77.73 ± 31.57 (0.084 mSvh-1 per MBq, or 3.1 mSvh-1 per mCi). We measured ten times the same source at various distances (1-2.25 m) from the probe. In each position, the system was triggered. Also we tested the system on 40 patients treated with radioiodine instructed to pass through the corridor. Each of their attempts triggered the system. According to our experience gained over the past few years, this alarm system intended for patients receiving radionuclide therapy ensures a high level of safety for both the patients and medical staff. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 175007 and Grant no. III41007]
- Published
- 2018
8. Redox parameters in blood of thyroid cancer patients after the radioiodine ablation
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Z Marija Jeremic, D Vera Spasojevic-Tisma, T Snezana Zivancevic-Simonovic, Ivan Pavlovic Lj., U Ana Todorovic, A Snezana Pejic, N Vera Todorovic, D Milovan Matovic, B Olgica Mihaljevic, and Vladimir Jakovljevic Lj.
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0303 health sciences ,antioxidant enzyme ,business.industry ,Radioiodine ablation ,lipid peroxidation ,medicine.disease ,Redox ,3. Good health ,03 medical and health sciences ,0302 clinical medicine ,Nuclear Energy and Engineering ,thyroid cancer ,Cancer research ,medicine ,lcsh:QC770-798 ,oxidative stress ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Safety, Risk, Reliability and Quality ,business ,Thyroid cancer ,radiotherapy ,030217 neurology & neurosurgery ,030304 developmental biology - Abstract
The radioactive iodine (131I) ablation is a well-accepted treatment modality for differentiated thyroid cancer patients. Unfortunately, the radiation induces the oxidative stress and damages cells and tissues, simultaneously activating the mechanisms of antioxidative defense. Since the mechanisms of those processes are not completely known, we wanted to examine the changes in the most important reactive oxygen species and antioxidative components, as well as their correlation and significance for lipid peroxidation. Our results showed that the level of thiobarbituric acid reactive substances was increased during the first 30 days after the radiotherapy. Among antioxidant components, superoxide dismutase was increased in the 3rd and 30th day; catalase in 7th and reduced glutathione in 3rd and 7th day after the radiotherapy. As regards the prooxidants, the reduction of hydrogen peroxide (H2O2) was recorded in 7th and 30th day, and superoxide anion radical (O×-) was unchanged after the exposure to 131I. These results indicate that differentiated thyroid cancer patients are under constant oxidative stress despite the observed increase in antioxidative and reduction in prooxidative parameters. The understanding of these early processes is important since their progress determines the latter effects of 131I therapy. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. III41007 and Grant no. 175007]
- Published
- 2017
9. Total and Regional Brain Volumes in a Population-Based Normative Sample from 4 to 18 Years: The NIH MRI Study of Normal Brain Development
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T. Paus, Alan C. Evans, Kelly N. Botteron, D. Dubois, K. M. Hebert, C. Rainey, J. Van Meter, J. Marmor, K. Gwinn-Hardy, J. O'Neill, L. Baskir, J. Rumsey, J. Harlap, William S. Ball, G. Yang, W. Bommer, L. Freund, C. Pierpaoli, L. Stanford, T. Nishino, S. Das, V. Fonov, R. Bradford, Michael J. Rivkin, L. Heinichen, G. B. Pike, L. Fu, S. Vajapeyam, J. Alger, D. L. Collins, G. Spinella, M. E. Brandt, B. Bintliff, E. Moss, S. Dunn, Aaron A. Wilber, R. A. Zimmerman, J. L. Edwards, M. Schapiro, A. German, P. J. Basser, S. Henderson, A. Toga, R. Asarnow, J. T. McCracken, Deborah P. Waber, A. Zijdenbos, Nicholas Lange, A. Chiverton, C. Almli, A. W. Byars, C. R. Almli, J. Newman, James J. Levitt, J. Constantino, Robert C. McKinstry, C. Ireland, T. Singer, K. Sirocco, Peter E. Davis, Richard L. Robertson, J. R. Alger, D. Milovan, I. Leppert, H. Volero, L. C. Chang, K. Smith, A. Carr, M. P. Froimowitz, Larry A. Kramer, R. Todd, Thomas A. Zeffiro, G. Leonard, D. Fadale, J. Koo, L. Walker, Dah Jyuu Wang, Gloria B. McAnulty, C. McCormack, R. Arnaoutelis, C. Mrakotsky, R. Mulkern, D. Vins, W. Warren, and J. M. Fletcher
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Male ,Brain development ,Adolescent ,Cognitive Neuroscience ,Population based ,Community Health Planning ,Functional Laterality ,Body Mass Index ,Cellular and Molecular Neuroscience ,Sex Factors ,Reference Values ,Image Processing, Computer-Assisted ,Humans ,Medicine ,Child ,Brain Mapping ,business.industry ,Age Factors ,Brain ,Articles ,Magnetic Resonance Imaging ,United States ,Cross-Sectional Studies ,National Institutes of Health (U.S.) ,Child, Preschool ,Regression Analysis ,Female ,business ,Normative sample ,Clinical psychology - Abstract
Using a population-based sampling strategy, the National Institutes of Health (NIH) Magnetic Resonance Imaging Study of Normal Brain Development compiled a longitudinal normative reference database of neuroimaging and correlated clinical/behavioral data from a demographically representative sample of healthy children and adolescents aged newborn through early adulthood. The present paper reports brain volume data for 325 children, ages 4.5-18 years, from the first cross-sectional time point. Measures included volumes of whole-brain gray matter (GM) and white matter (WM), left and right lateral ventricles, frontal, temporal, parietal and occipital lobe GM and WM, subcortical GM (thalamus, caudate, putamen, and globus pallidus), cerebellum, and brainstem. Associations with cross-sectional age, sex, family income, parental education, and body mass index (BMI) were evaluated. Key observations are: 1) age-related decreases in lobar GM most prominent in parietal and occipital cortex; 2) age-related increases in lobar WM, greatest in occipital, followed by the temporal lobe; 3) age-related trajectories predominantly curvilinear in females, but linear in males; and 4) small systematic associations of brain tissue volumes with BMI but not with IQ, family income, or parental education. These findings constitute a normative reference on regional brain volumes in children and adolescents.
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- 2011
10. Modeling the ligand specific μ- and δ-opioid receptor conformations
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Milan Sencanski, Sonja Vučković, D Milovan Ivanovic, and Ljiljana Dosen-Micovic
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Molecular model ,molecular modeling ,Chemistry ,medicine.drug_class ,Ligand ,Stereochemistry ,Binding energy ,General Chemistry ,opioid receptor ,010402 general chemistry ,01 natural sciences ,0104 chemical sciences ,lcsh:Chemistry ,Molecular dynamics ,docking simulation ,lcsh:QD1-999 ,Searching the conformational space for docking ,Docking (molecular) ,Opioid receptor ,medicine ,ligand–receptor interactions ,Receptor - Abstract
An automated docking procedure was applied to study the binding of a series of ?- and ?-selective ligands to ligand-specific ?- and ?-opioid receptor models. Short-time molecular dynamic simulations were used to obtain ligand-specific ?- and ?-opioid receptors from arbitrarily chosen models of the active form of these receptors. The quality of receptor model depended on the molecular volume of the ligand in the receptor-ligand complex used in the molecular dynamic simulations. Within a series of ligands of similar size (volume), the results of ligand docking to the obtained ligand-specific receptor conformation were in agreement with point mutation studies. The correlation of the calculated and the experimentally determined binding energies was improved in relation to the initial receptor conformation.
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- 2011
11. Perioperative Hypothermia (33°C) Does Not Increase the Occurrence of Cardiovascular Events in Patients Undergoing Cerebral Aneurysm Surgery
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D. Chartrand, Michael Beven, C. Salem, W. Burnett, S. Jackson, G. Downey, Michael T. Lawton, S. Lownie, R. Tack, E. Dy, Tord D. Alden, David R. McIlroy, Lis Evered, K. Lukitto, L. Kirby, Thomas A. Moore, R. Popovic, N. Robertson, Patrick W. Hitchon, A. Ashtari, R. Elbe, N. F. Kassell, D. Dulli, A. Wyss, G. Ghazali, S. Rice, Gavin W. Britz, P. Bennett, Karen B. Domino, A. Shahen, D. Dehring, Robert Greif, Argye E. Hillis, L. Meng, D. Fishback, Fred Gentili, Mark Buckland, B. Schaefer, H. Madder, C. Weasler, Anish Bhardwaj, E. Thomson, Ramez W. Kirollos, Basil F. Matta, Kevin H. Siu, H. Machlin, W. Pfisterer, A. Freymuth, N. Badner, R. Wilson, R. Grauer, Zhiyi Zuo, A. McAllister, Z. Sha, A. Rushton, D. Hill, William T. Clarke, L. Jensen, G. Heard, L. Clark, D. Chatfield, J. Haartsen, Jing Wang, S. Nobles, Renee Testa, P. D'Urso, Hossam El-Beheiry, David J. Stone, James C. Torner, Michael J. Souter, A. Meyer, Marek A. Mirski, Marlan R. Hansen, W. Jenkins, L. Pobereskin, J. Walkes, M. Quigley, R. Struthers, James H McMahon, Howard A. Riina, Behnam Badie, P. Heppner, Simon Jones, R. Silbergleit, Thomas N. Pajewski, T. Broderick, Katherine Harris, P. Smythe, N. Duggal, J. Quaedackers, J. Mason, P. E. Bickler, P. McNeill, V. Roelfsema, I. Gibmeier, C. Chambers, H. Gramke, D. Campbell, T. Novick, O. Moise, J. Woletz, Lorri A. Lee, H. Van Aken, Adrian W. Gelb, A. Kane, B. Rapf, Martin S. Angst, S. Shaikh, D. Sirhan, C. Miller, B. Hodkinson, D. Leggett, F. Johnson, Harry J. M. Lemmens, M. Langley, Y. Young, Jeffrey V. Rosenfeld, C. Moy, W. Hamm, C. Hall, G. Henry, R. Burnstein, Lisa Hannegan, A. Buchmann, R. Schatzer, Bruce P. Hermann, John E. McGillicuddy, Bruno Giordani, John C. VanGilder, Keith H. Berge, D. Sage, L. Sternau, N. Page, Marc R. Mayberg, B Thompson, T. Hartman, Laurel E. Moore, S. Bhatia, Richard A. Jaffe, G. Seever, D. Cowie, Jonathan G. Zaroff, C. Duffy, Deborah A. Rusy, Elana Farace, H R Winn, Paul H. Ting, R. Spinka, J. Marler, Patricia H. Petrozza, S. Harding, Lauren C. Berkow, E. Cunningham, D. Bisnaire, D. Wilhite, P. Blanton, S. Laurent, O. Odukoya, Issam A. Awad, P. Chery, C. Lind, B. Bauer, D. Lindholm, K. Kieburtz, J. Ormrod, Michael P. Murphy, Timothy G. Short, Y. Painchaud, R. Peters, Peter C. Whitfield, D. Bain, B. Hindman, A. Shelton, A. Morris, D. Milovan, L. Salvia, William L. Young, S. Wallace, W. Lilley, H. Yi, R. Chelliah, David W. Newell, R. Deam, John Laidlaw, P. Mak, J. Woelfer, K. Graves, Peter M. C. Wright, D. Van Alstine, M. Hemstreet, Phillip A. Scott, Steven D. Chang, S. Poustie, M. Clausen, I. Herrick, Daniel H. Kim, Vladimir Zelman, John L.D. Atkinson, Marcel E. Durieux, Alessandro Olivi, G. Smith, James R. Munis, F. Vasarhelyi, S. Olson, C. Greiner, C. Hoenemann, G. Kleinpeter, J. Kish, Daniel K. Resnick, J. Lang, Dhanesh K. Gupta, E. Knosp, N. Monteiro de Oliveira, D. Moskopp, Carin A. Hagberg, J. Howell, Klaus Hahnenkamp, Gregory M. Davis, T. Phan, Paul S. Myles, C. Beven, F. Salevsky, Maria Matuszczak, E. Mee, David L. Bogdonoff, P. Berklayd, J. Freyhoff, P. Tanzi, A. Law, Barbara A. Dodson, Z. Thayer, R. Govindaraj, Alex Konstantatos, Ralph F. Frankowski, Pirjo H. Manninen, David G. Piepgras, K. Willmann, E. Babayan, Donald S. Prough, Leslie C. Jameson, John A. Wilson, Mary Pat McAndrews, M. Abou-Madi, Steven S. Glazier, Vincent C. Traynelis, Derek A. Taggard, Fredric B. Meyer, C. Bradfield, Hoang P. Nguyen, Mary L. Marcellus, J. Ogden, M. Maleki, M. Lotto, Michael A. Olympio, C. Merhaut, D. Nye, K. Webb, Richard Leblanc, Nichol McBee, William L. Lanier, A. Molnar, Peter J. Lennarson, S. Wadanamby, H. Hulbert, Christopher R. Turner, H. Fraley, Kevin K. Tremper, Sesto Cairo, J. Shafer, J. Krugh, D. Blair, L. Coghlan, P. Schmid, K. O'Brien, K. Littlewood, T. Anderson, R. Eliazo, S. Wirtz, Carol B. Applebury, Jennifer O. Hunt, S. Hickenbottom, Hendrik Freise, Gary D. Steinberg, M. Woodfield, Robert J. Dempsey, Kirk J. Hogan, M. Harrison, H. Stanko, Teresa Bell-Stephens, N. Merah, T. Blount, J. Sanders, J. Biddulph, Tsutomu Sasaki, F. Mensink, P. Balestrieri, Lisa D. Ravdin, H. Lohmann, M. Todd, James Gebel, Lawrence Litt, Christoph Schul, B. White, Bradley J. Hindman, S. Salerno, A. James, D. Manke, Mvon Lewinski, D. Luu, Michael M. Todd, A. Drnda, S. Salsbury, J. Palmisano, L. Connery, Michael Tymianski, E. Tuffiash, Cynthia A. Lien, R. Sawyer, A. Sills, D. Sinclair, J. Bramhall, Ira J. Rampil, David M. Colonna, M. Geraghty, Steven W. Anderson, V. Petty, S. Pai, J. Sheehan, S. Black, K. English, N. Scurrah, Diana G. McGregor, P. Davies, P. Doyle-Pettypiece, H. Bone, Neal J. Naff, M. Lenaerts, James Mitchell, K. Pedersen, Matthew A. Howard, M. Angliss, Daniel Tranel, Bongin Yoo, M. Irons, Emine O. Bayman, C. Skilbeck, Nicholas G. Bircher, Wendy C. Ziai, S. Micallef, Chuanyao Tong, Kathryn Chaloner, Mark T. Wallace, John Moloney, Gavin Fabinyi, P. Sutton, Edward C. Nemergut, Elizabeth Richardson, C. McCleary, M. Graf, Mrinalini Balki, P. Porter, James J. Evans, A. Prabhu, L. Kim, R. Hendrickson, A. Dashfield, V. Portman, Michel T. Torbey, J. Kruger, Donna L. Auer, J. Sorenson, Patricia H. Davis, John A. Walker, M. Mosier, H. Smith, J. Heidler, Andrew Silvers, P. Fogarty-Mack, William F. Chandler, F. Shutway, F. Rasulo, S. Alatakis, Stephen Samples, A. Wray, Henry H. Woo, John A. Ulatowski, Steven L. Giannotta, D. Chandrasekara, J. Sturm, S. Crump, Peter A. Rasmussen, Max R. Trenerry, D. Novy, Wink S. Fisher, N. Quinnine, F. Bardenhagen, M. Angle, W. Ng, G. Ferguson, A. Blackwell, Christopher M. Loftus, James H. Fitzpatrick, David S. Warner, E. Tuerkkan, W. Kutalek, Ferenc E. Gyulai, D. Daly, Helen Fletcher, J. Smith, Mazen A. Maktabi, Howard Yonas, J. Sneyd, M. Menhusen, Johnny E. Brian, K. Smith, R. Watson, T. Weber, D. Greene-Chandos, M. Wichman, Peter Szmuk, J. Birrell, Pekka Talke, J. Jane, L. Atkins, J. Smart, T. Han, B. O'Brien, R. Mattison, Bermans J. Iskandar, J. Ridgley, S. Dalrymple, L. Lindsey, D. Anderson, Julie B. Weeks, M. Felmlee-Devine, P. Deshmukh, D. Ellegala, L. Moss, A. Mathur, F. Lee, F. Sasse, H. Macgregor, R. Peterson, Margaret R. Weglinski, Karen Lane, Daniele Rigamonti, L. Carriere, Mark Wilson, R. Morgan, T. Costello, C. Thien, Arthur M. Lam, H. Bybee, C. Salmond, Robert E. Breeze, Peter Karzmark, Monica S. Vavilala, S. Yantha, Philip E. Stieg, Guy L. Clifton, Kenneth Manzel, D. Papworth, Rafael J. Tamargo, Rosemary A. Craen, Harold P. Adams, B. Radziszewska, Y. Kuo, Satwant K. Samra, B. Frankel, R. Fry, T. Cunningham, M. Mosa, M. McTaggart, F. Steinman, Alex Abou-Chebl, Michael J. Link, Rona G. Giffard, N. Lapointe, C. Meade, Robert F. Bedford, J. Cormack, Robert P. From, J. Reynolds, Paul A. Leonard, K. Quader, N. Subhas, C. Lothaller, S. Ryan, J. Winn, H. Brors, Amin B. Kassam, A. Gelb, J. Zaroff, Gregory M. Malham, A. Redmond, Gordon J. Chelune, J. Findlay, Zeyd Ebrahim, L. Forlano, Mark E. Shaffrey, C. Chase, Peter J. Kirkpatrick, Armin Schubert, L. Koller, Jana E. Jones, P. Li, and B. Chen
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medicine.medical_specialty ,Subarachnoid hemorrhage ,Interventional cardiology ,business.industry ,Vascular disease ,Perioperative ,Hypothermia ,medicine.disease ,Preoperative care ,Anesthesiology and Pain Medicine ,Aneurysm ,Anesthesia ,Anesthesiology ,Medicine ,medicine.symptom ,business - Abstract
Background Perioperative hypothermia has been reported to increase the occurrence of cardiovascular complications. By increasing the activity of sympathetic nervous system, perioperative hypothermia also has the potential to increase cardiac injury and dysfunction associated with subarachnoid hemorrhage. Methods The Intraoperative Hypothermia for Aneurysm Surgery Trial randomized patients undergoing cerebral aneurysm surgery to intraoperative hypothermia (n = 499, 33.3 degrees +/- 0.8 degrees C) or normothermia (n = 501, 36.7 degrees +/- 0.5 degrees C). Cardiovascular events (hypotension, arrhythmias, vasopressor use, myocardial infarction, and others) were prospectively followed until 3-month follow-up and were compared in hypothermic and normothermic patients. A subset of 62 patients (hypothermia, n = 33; normothermia, n = 29) also had preoperative and postoperative (within 24 h) measurement of cardiac troponin-I and echocardiography to explore the association between perioperative hypothermia and subarachnoid hemorrhage-associated myocardial injury and left ventricular function. Results There was no difference between hypothermic and normothermic patients in the occurrence of any single cardiovascular event or in composite cardiovascular events. There was no difference in mortality (6%) between groups, and there was only a single primary cardiovascular death (normothermia). There was no difference between hypothermic and normothermic patients in postoperative versus preoperative left ventricular regional wall motion or ejection fraction. Compared with preoperative values, hypothermic patients had no postoperative increase in cardiac troponin-I (median change 0.00 microg/l), whereas normothermic patients had a small postoperative increase (median change + 0.01 microg/l, P = 0.038). Conclusion In patients undergoing cerebral aneurysm surgery, perioperative hypothermia was not associated with an increased occurrence of cardiovascular events.
- Published
- 2010
12. No Association between Intraoperative Hypothermia or Supplemental Protective Drug and Neurologic Outcomes in Patients Undergoing Temporary Clipping during Cerebral Aneurysm Surgery
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John A. Ulatowski, Steven L. Giannotta, J. Sturm, D. Cowie, D. Novy, N. Quinnine, James H. Fitzpatrick, David S. Warner, Ferenc E. Gyulai, D. Daly, S. Rice, H. Machlin, William T. Clarke, Philip E. Bickler, H. Van Aken, M. Langley, M. von Lewinski, G. Kleinpeter, J. Freyhoff, A. Morris, L. Salvia, Peter M. C. Wright, Wolfgang K. Pfisterer, K. English, M. Lenaerts, Nicholas G. Bircher, Simon Jones, L. Jensen, Issam A. Awad, P. Chery, B. Schaefer, S. Wallace, F. Johnson, H. Smith, J. Biddulph, T. Cunningham, N. Monteirode Oliveira, R. Watson, A. McAllister, D. Moskopp, Patricia H. Petrozza, B. Hindman, A. Shelton, D. Manke, F. Steinman, D. Luu, Alex Abou-Chebl, J. Birrell, M. Irons, J. Ridgley, Gavin Fabinyi, S. Alatakis, Basil F. Matta, James J. Evans, A. Prabhu, Rona G. Giffard, H. Gramke, Hendrik Freise, K. Graves, P. Fogarty-Mack, L. Clark, Wink S. Fisher, K. Smith, Renee Testa, P. D'Urso, A. Freymuth, James C. Torner, M. Wallace, R. Struthers, Howard A. Riina, Z. Thayer, Daniel Tranel, E. Knosp, E. Dy, Tord D. Alden, Henry H. Woo, Bruce P. Hermann, John C. VanGilder, Douglas Campbell, N. Lapointe, Gavin W. Britz, J. Sheehan, C. Meade, M. Balki, C. Bradfield, Alessandro Olivi, P. Doyle-Pettypiece, Robert F. Bedford, F. Bardenhagen, M. Angle, Donald S. Prough, John E. McGillicuddy, A. Drnda, M. Abou-Madi, S. Black, David R. McIlroy, Lis Evered, S. Poustie, J. Cormack, J. Sneyd, M. Menhusen, William L. Lanier, M. Maleki, T. Phan, D. Nye, M. Graf, Michael A. Olympio, N. Robertson, Teresa Bell-Stephens, E. Tuerkkan, N. Merah, S. Olson, L. Kirby, L. Moss, Peter Heppner, Thomas A. Moore, J. Bramhall, H. Madder, Christopher R. Turner, H. Fraley, James Mitchell, K. Pedersen, M. Angliss, Robert P. From, Y. Painchaud, Gary D. Steinberg, J. Woelfer, K. Littlewood, T. Anderson, J. Palmisano, M. Clausen, Paul H. Ting, Lisa D. Ravdin, H. Lohmann, R. Burnstein, R. Popovic, T. Hartman, D. Anderson, Julie B. Weeks, H. Macgregor, Kirk J. Hogan, D. Chatfield, Daniel H. Kim, James R. Munis, J. Lang, J. Reynolds, Michael M. Todd, F. Mensink, L. Pobereskin, J. Walkes, Mary Pat McAndrews, A. Sills, Bongin Yoo, P. Balestrieri, S. Micallef, Mary L. Marcellus, J. Wang, Kathryn Chaloner, Patrick W. Hitchon, Paul A. Leonard, C. McCleary, Lawrence Litt, N. Subhas, Wendy C. Ziai, James H McMahon, V. Petty, P. Smythe, G. Heard, Michael J. Souter, R. Hendrickson, A. Dashfield, V. Portman, Edward C. Nemergut, Patricia H. Davis, W. Burnett, M. Lotto, Y. Young, S. Jackson, J. Quaedackers, S. Ryan, Helen Fletcher, A. Ashtari, N. F. Kassell, Anish Bhardwaj, E. Thomson, Ramez W. Kirollos, Margaret R. Weglinski, Karen Lane, Daniele Rigamonti, J. Winn, Bradley J. Hindman, S. Salerno, L. Kim, R. Sawyer, Peter J. Lennarson, S. Wadanamby, Zhiyi Zuo, William F. Chandler, F. Shutway, P. Bennett, C. Merhaut, D. Hill, J. Haartsen, N. Badner, T. Weber, Rafael J. Tamargo, D. Fishback, Rosemary A. Craen, Michel T. Torbey, O. Odukoya, D. Chartrand, J. Jane, Michael T. Lawton, A. Buchmann, Richard A. Jaffe, P. Berklayd, T. Blount, J. Sanders, J. Marler, L. Meng, R. Grauer, Y. Kuo, O. Moise, P. Tanzi, R. Govindaraj, Alex Konstantatos, D. Greene-Chandos, G. Downey, M. Wichman, D. Chandrasekara, Amin B. Kassam, Max R. Trenerry, R. Elbe, A. Wyss, R. Peterson, D. Sirhan, C. Miller, Marek A. Mirski, Stephen Samples, H. Brors, Michael Beven, M. Woodfield, William L. Young, D. Leggett, A. Wray, Karen B. Domino, Robert Greif, Argye E. Hillis, Gary G. Ferguson, Steven S. Glazier, J. Shafer, J. Krugh, I. Gibmeier, G. Ghazali, W. Ng, R. Tack, R. Schatzer, B. O'Brien, Bermans J. Iskandar, B. Bauer, C. Lind, C. Weasler, Michael Tymianski, E. Tuffiash, W. Hamm, C. Hall, L. Sternau, N. Page, Marc R. Mayberg, B Thompson, Richard Leblanc, A. Shahen, Laurel E. Moore, S. Bhatia, Nichol McBee, P. Davies, James Gebel, Cynthia A. Lien, J. Ormrod, David M. Colonna, D. Dehring, A. Rushton, P. Blanton, C. Lothaller, Diana G. McGregor, S. Harding, Lauren C. Berkow, D. Van Alstine, M. Hemstreet, A. Blackwell, Christopher M. Loftus, Klaus Hahnenkamp, J. Woletz, D. Lindholm, K. Kieburtz, M. Geraghty, Steven W. Anderson, D. Dulli, M. McTaggart, Fred Gentili, Johnny E. Brian, R. Peters, C. Greiner, Marlan R. Hansen, W. Jenkins, T. Broderick, Katherine Harris, B. Radziszewska, Maria Matuszczak, David L. Bogdonoff, K. Quader, Pekka Talke, B. Hodkinson, C. Hoenemann, C. Duffy, Deborah A. Rusy, R. Silbergleit, J. Findlay, Gregory M. Davis, J. Ogden, Adrian W. Gelb, A. Kane, Satwant K. Samra, E. Babayan, S. Dalrymple, Harry J. M. Lemmens, Tsutomu Sasaki, Lisa Hannegan, R. Eliazo, B. Frankel, D. Bisnaire, F. Salevsky, Michael J. Link, Jeffrey V. Rosenfeld, D. Sage, D. Sinclair, Keith H. Berge, D. Wilhite, Steven D. Chang, J. Kish, Carin A. Hagberg, Matthew A. Howard, Elizabeth Richardson, Peter C. Whitfield, D. Bain, Barbara A. Dodson, S. Crump, David G. Piepgras, John A. Wilson, David W. Newell, R. Deam, John Laidlaw, K. Willmann, J. Heidler, Vincent C. Traynelis, K. Webb, P. Li, A. Mathur, S. Hickenbottom, S. Wirtz, L. Lindsey, H. Stanko, Mark Wilson, S. Salsbury, L. Connery, Robert J. Dempsey, Edward W. Mee, R. Morgan, Ira J. Rampil, V. Roelfsema, Christoph Schul, B. White, A. James, N. Scurrah, C. Thien, Arthur M. Lam, P. Mak, Behnam Badie, Guy L. Clifton, R. Wilson, J. Kruger, Donna L. Auer, M. Mosier, S. Nobles, David J. Stone, A. Law, Timothy G. Short, W. Lilley, H. Yi, Marcel E. Durieux, Daniel K. Resnick, Dhanesh K. Gupta, Paul S. Myles, C. Beven, Thomas N. Pajewski, J. Mason, P. McNeill, F. Lee, Bruno Giordani, Leslie C. Jameson, G. Seever, Stephen P. Lownie, Fredric B. Meyer, P. Porter, K. O'Brien, Vladimir Zelman, John L.D. Atkinson, A. Molnar, H. Hulbert, S. Pai, Neal J. Naff, S. Shaikh, M. Mosa, Pirjo H. Manninen, Derek A. Taggard, Ian A. Herrick, Mark E. Shaffrey, Carol B. Applebury, C. Chase, Neil Duggal, Mark Buckland, M. Quigley, D. Milovan, Michael J. Harrison, Peter J. Kirkpatrick, Armin Schubert, R. Mattison, Ralph F. Frankowski, R. Chelliah, Jana E. Jones, J. Howell, H. Bone, Emine O. Bayman, P. Deshmukh, C. Skilbeck, P. Sutton, B. Chen, L. Carriere, J. Sorenson, Andrew Silvers, F. Sasse, F. Rasulo, Gordon J. Chelune, Zeyd Ebrahim, L. Forlano, Chuanyao Tong, John Moloney, Michael P. Murphy, S. Yantha, W. Kutalek, Kevin K. Tremper, C. Chambers, Sesto Cairo, Robert E. Breeze, A. Meyer, Monica S. Vavilala, C. Salem, H. El-Beheiry, Gregory M. Malham, A. Redmond, L. Koller, Kenneth Manzel, D. Papworth, C. Moy, G. Henry, Elana Farace, H R Winn, E. Cunningham, B. Rapf, J. Smith, Mazen A. Maktabi, Howard Yonas, D. Ellegala, Kevin H. Siu, Lorri A. Lee, Phillip A. Scott, K. Lukitto, Jennifer O. Hunt, D. Blair, P. Schmid, M. Felmlee-Devine, Peter A. Rasmussen, Peter Szmuk, L. Atkins, J. Smart, T. Han, T. Costello, H. Bybee, C. Salmond, Peter Karzmark, Philip E. Stieg, Harold P. Adams, T. Novick, Z. Sha, Martin S. Angst, S. Laurent, G. Smith, F. Vasarhelyi, R. A. Fry, and John A. Walker
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medicine.medical_specialty ,business.industry ,Vascular disease ,Glasgow Outcome Scale ,Odds ratio ,Hypothermia ,medicine.disease ,law.invention ,Surgery ,Anesthesiology and Pain Medicine ,Aneurysm ,Randomized controlled trial ,law ,Anesthesia ,Anesthesiology ,Medicine ,medicine.symptom ,business ,Prospective cohort study - Abstract
Background Although hypothermia and barbiturates improve neurologic outcomes in animal temporary focal ischemia models, the clinical efficacy of these interventions during temporary occlusion of the cerebral vasculature during intracranial aneurysm surgery (temporary clipping) is not established. Methods A post hoc analysis of patients from the Intraoperative Hypothermia for Aneurysm Surgery Trial who underwent temporary clipping was performed. Univariate and multivariate logistic regression methods were used to test for associations between hypothermia, supplemental protective drug, and short- (24-h) and long-term (3-month) neurologic outcomes. An odds ratio more than 1 denotes better outcome. Results Patients undergoing temporary clipping (n = 441) were assigned to intraoperative hypothermia (33.3 degrees +/- 0.8 degrees C, n = 208) or normothermia (36.7 degrees +/- 0.5 degrees C, n = 233), with 178 patients also receiving supplemental protective drug (thiopental or etomidate) during temporary clipping. Three months after surgery, 278 patients (63%) had good outcome (Glasgow Outcome Score = 1). Neither hypothermia (P = 0.847; odds ratio = 1.043, 95% CI = 0.678-1.606) nor supplemental protective drug (P = 0.835; odds ratio = 1.048, 95% CI = 0.674-1.631) were associated with 3-month Glasgow Outcome Score. The effect of supplemental protective drug did not significantly vary with temperature. The effects of hypothermia and protective drug did not significantly vary with temporary clip duration. Similar findings were made for 24-h neurologic status and 3-month Neuropsychological Composite Score. Conclusion In the Intraoperative Hypothermia for Aneurysm Surgery Trial, neither systemic hypothermia nor supplemental protective drug affected short- or long-term neurologic outcomes of patients undergoing temporary clipping.
- Published
- 2010
13. Enrichment of mesophilic acidophiles from the Underground Copper Mine Bor
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D Emina Pozega, B Vladimir Cvetkovski, V Milena Cvetkovska, T Vesna Conic, and D Milovan Vukovic
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centrifugation ,Chemistry ,General Chemical Engineering ,Radiochemistry ,Metallurgy ,chemistry.chemical_element ,ferrous ions ,General Chemistry ,lcsh:Chemical technology ,Oxygen ,Ferrous ,chemistry.chemical_compound ,Nutrient ,Carbon dioxide ,autoclaving ,lcsh:TP1-1185 ,Centrifugation ,incubated ,Incubation ,Copper mine ,Mesophile - Abstract
In this work, autotrophic growth of mesophilic acidophiles from the Underground Copper Mine Bor was performed. Two selected solution samples collected from the 'Tilva Ros' ore body were prepared in a 9K nutrient medium (Silverman and Lundgren, 1959). The first sample TR k-16 was obtained during the hole drilling of the ore body, and the second TR k-31 from the drainage channel. Two samples of 9K media (Silverman and Lundgren, 1959) were inoculated with two selected solution samples from the underground mine Tilva Ros. Inoculated culture media were incubated without prior autoclaving in the period of 6 days at a temperature of 28 ?C with purging air through the system with enough oxygen and carbon dioxide. Oxidation rate of ferrous ions in the first 3 days of incubation was 14.8 and 10.7 wt.% Fe2+/day, the next 3 days 17.3 and 13.6 and for the total period of 6 days 98.3 and 74.8 wt.% for the first and second sample, respectively, i.e. 100 wt.% with initial percentage of ferrous ion in each medium. After centrifugation of enriched samples of culture media at 3000 rpm for 5 min, a plenty of mesophilic acidophiles were determined by microscopic method. According to Karavaiko [6], in the processes of incubition for 9K nutrient solution cells number reach a value of 108 cells/cm3.
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- 2009
14. The synthesis and pharmacological evaluation of (±)-2, 3- seco-fentanyl analogues
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R Evica Ivanovic, S Milica Prostran, I Ljiljana Dosen-Micovic, D Vesna Kiricojevic, Jasna Djordjevic, D Milovan Ivanovic, I.V. Micovic, M Sonja Vuckovic, and M Zoran Todorovic
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chemistry.chemical_classification ,010405 organic chemistry ,1,3-diamines ,General Chemistry ,010402 general chemistry ,01 natural sciences ,Reductive amination ,0104 chemical sciences ,Enamine ,lcsh:Chemistry ,chemistry.chemical_compound ,opioid analgesics ,Aniline ,Aminolysis ,chemistry ,lcsh:QD1-999 ,Amide ,Organic chemistry ,Piperidine ,Deoxygenation ,Alkyl ,open-chain fentanyl analogues - Abstract
An efficient, five-step synthetic approach to various acyclic 1,3-diamines has been developed and applied to the preparation of a novel class of open-chained fentanyl analogues. The acyclic derivatives 5.1–5.5 (all new compounds) were synthesized with the aim of estimating the significance of the piperidine ring for the opioid analgesic activity of anilido-piperidines. The starting β-keto-amide 1.1, prepared by the aminolysis of methyl acetoacetate with methylphenethylamine, (93 % yield), was successively reacted with NaH and BuLi, to form the highly reactive α,γ-dienolate anion 1.1a. Regio and chemoselective γ-alkylation of the dienolate with various primary and secondary alkyl halides furnished the β-keto-amides 1.2–1.5 (76–91 %). Reductive amination of the keto-amides 1.1–1.5 with aniline and Zn powder in acetic acid, via the enamine intermediates 2.1–2.5, afforded the β-anilino amides 3.1–3.5 (74–85 %). After reductive deoxygenation of the tertiary amide group, using in situ generated diborane, the corresponding 1,3-diamines 4.1–4.5 were obtained (87–97 %). The synthesis of (±)-2,3-seco-fentanyls 5.1–5.5 was completed by N-acylation of the diamines 4.1–4.5 with propionyl chloride, followed by precipitation of the monooxalate salts (86–95 %). The parent compound, 2,3-seco-fentanyl 5.1, was found to be a 40 times less potent narcotic analgesic than fentanyl but still 5–6 times more active than morphine in rats, while i-Pr derivative 5.3 was inactive. Apart from the pharmacological significance, the general procedure described herein may afford various functionalized, 1,3-diamines as potential complexing agents and building blocks for the synthesis of aza-crown ethers. Razvijen je efikasan postupak za dobijanje različitih acikličnih 1,3-diamina u pet faza, i primenjen u sintezi nove klase analoga fentanila otvorenog niza. Derivati 5.1–5.5 (svi su nova jedinjenja) sintetisani su sa ciljem da se proceni uticaj piperidinskog prstena na opioidnoanalgetičku aktivnost anilido-piperidina. Polazni β-keto-amid 1.1, dobijen aminolizom metilacetoacetata metilfenetilaminom (prinos 93 %), bio je sukcesivno tretiran sa NaH i BuLi, pri čemu je postao veoma reaktivni α,γ-dienolatni anjon 1.1a. Regio- i hemoselektivnim γ-alkilovanjem ovog dienolata različitim primarnim i sekundarnim alkil-halogenidima, dobijeni su β-keto-amidi 1.2–1.5 (prinos 76–91 %). Reduktivnim aminovanjem keto-amida 1.1–1.5 pomoću Zn praha i sirćetne kiseline, preko enaminskih intermedijera 2.1–2.5, postali su -anilino-amidi 3.1–3.5 (prinos 74–85 %). Posle reduktivne deoksigenacije tercijene amidne funkcije, koristeći in situ generisani diboran, odgovarajući 1,3-diamini 4.1–4.5 izolovani su u prinosima 87–97 %. Sinteza (±)-2,3-seco-fentanila 5.1–5.5 završena je N-acilovanjem diamina 4.1–4.5 propionil-hloridom, a zatim taloženjem u obliku monooksalatnih soli (prinos 86–95 %). Nađeno je da je osnovno jedinjenje, 2,3-seco fentanil 5.1, 40 puta slabiji narkotički analgetik od fentanila, ali još uvek 5–6 puta aktivniji od morfina u pacova, dok je i-Pr derivat 5.3 bio neaktivan. Osim farmakološkog značaja, opštim postupkom prikazanim u ovom radu, mogu se sintetisati različiti 1,3-diamini, uključujući i one sa funkcionalnim grupama. Ova jedinjenja mogu biti potencijalno značajna kao kompleksirajući agensi i kao intermedijeri u sintezi aza-kraun-etara.
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- 2004
15. Sinteza i preliminarni farmakološki testovi recemskih cis i trans 3-alkilanaloga fentanila
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I.V. Micovic, M Zoran Todorovic, M Sonja Vuckovic, D Milovan Ivanovic, I Ljiljana Dosen-Micovic, S Milica Prostran, V.D. Kricojevic, and Jasna Djordjevic
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010405 organic chemistry ,Stereochemistry ,Imine ,Diastereomer ,General Chemistry ,010402 general chemistry ,01 natural sciences ,0104 chemical sciences ,lcsh:Chemistry ,chemistry.chemical_compound ,Column chromatography ,Aniline ,lcsh:QD1-999 ,chemistry ,Yield (chemistry) ,Butyllithium ,Acid hydrolysis ,Cis–trans isomerism - Abstract
A general, five step method for the synthesis of 3-alkylfentanyl analogues (i.e., cis and trans 3-alkyl-4-anilidopiperidines 6.1–6.6) has been developed. The starting N-phenethyl- 4-piperidone 1 was first converted into the cyclohexylimine derivative 2, α-deprotonated with butyllithium and the resulting imine anion efficiently monoalkylated with primary and secondary alkyl halides. After mild acid hydrolysis, the obtained 3-alkyl-4-piperidones 3.1–3.6 were isolated in good yields (79–85 %), then condensed with aniline to form imines 4.1–4.6. Subsequent reduction of the imines (LiAlH4/THF) yielded cis/trans mixtures of 3-alkyl-4-anilinopiperidines 5.1–5.6. Quantitative separation of the diastereoisomers by column chromatography of Al2O3 gave pure cis 5.1–5.6 (29–51 % yield) and trans 5.1–5.6 (19–27%yield) with the cis/trans ratio in the range 7/3–6/4. The synthesiswas concluded by N-acylation of the purified 5.1–5.6, with propionyl chloride, to afford cis and trans 3-alkyl- 4-anilidopiperidines 6.1–6.6 (≈ 95 % yield, as monooxalate salts). No enatioseparation was attempted at any stage. The relative cis/trans stereochemistry was provisionally assigned from the 1H-NMR spectra. Of the twelve synthesized 3-alkylfentanyls, ten compounds (two known and eight novel derivatives, all as the monooxalate salts) were preliminarily tested as analgesics in rats, comparing the potency to fentanyl. Except for the known (±)-cis-3-Me fentanyl 6.1cis, (8 x fentanyl), and the novel (±)-cis-3-Et fentanyl 6.2 cis, (1.5 x fentanyl), all of the others were less active than fentanyl or inactive. Some tentative conclusions on the structure- activity relationship (SAR) in this series of derivatives have been made. Razvijen je opšti metod za sintezu 3-alkil analoga fentanila (tj. cis i trans 3-alkil-4-anilidopiperidina 6.1–6.6) u pet faza. Polazni N-fenetil-4-piperidon 1 prvo je preveden u cikloheksiliminski derivat 2, α-deprotonovan butillitijumom, a postali iminski anjon efikasno monoalkilovan primarnim i sekundarnim alkilhalogenidima. Posle blage kisele hidrolize, nastali 3-alkil-4-piperidoni 3.1–3.6 izolovani su u dobrim prinosima (79–85 %), zatim kondenzovani sa anilinom do imina 4.1–4.6. Redukcijom ovih imina (LiAlH4/THF) dobijene su cis/trans smese 3-alkil-4-anilinopiperidina 5.1–5.6. Kvantitativnim hromatografskim razdvajanjem dijastereoizomera na stubu Al2O3 izolovani su čisti cis 5.1–5.6 (prinos 29–51 %) i trans 5.1–5.6 (prinos 19–27 %), gde je cis/trans odnos bio u opsegu 7/3–6/4. Sinteza je završena N-acilovanjem prečišćenih intermedijera 5.1–5.6 pomoću propionil-hlorida, pri čemu su postali cis i trans 3-alkil-4-anilidopiperidini 6.1–6.6 (prinos _ 95 %, kao monooksalatne soli). Ni u jednoj fazi nije pokušano razdvajanje enantiomera. Relativna, cis/trans, stereohemija preliminarno je određena iz 1H-NMRspektra. Od dvanaest sintetisanih 3-alkil-fentanila, deset jedinjenja (dva poznata i osam novih, sva u obliku monookasalatnih soli) preliminarno su testirana kao analgetici na pacovima, poredeći aktivnost sa fentanilom.Osim poznatog (±)-cis-3-Me fentanila 6.1 cis, (8 x fentanil), i novog (±)-cis-3-Et fentanila 6.2 cis, (1,5 x fentanil), svi ostali bili su manje aktivni ili neaktivni. Izvedeni su određeni, preliminarni zaključci u vezi odnosa strukture i aktivnosti u ovoj seriji derivata.
- Published
- 2004
16. Perioperative fever and outcome in surgical patients with aneurysmal subarachnoid hemorrhage
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David G. Piepgras, David R. McIlroy, John A. Wilson, H. Yi, Lis Evered, J. Sheehan, Marcel E. Durieux, Daniel K. Resnick, L. Kirby, M. Abou-Madi, Michael A. Olympio, Dhanesh K. Gupta, Peter Heppner, Thomas A. Moore, Paul S. Myles, S. Wirtz, Richard Leblanc, C. Beven, Robert J. Dempsey, Edward W. Mee, Nichol McBee, P. Davies, V. Roelfsema, Christoph Schul, B. White, Leslie C. Jameson, A. James, R. Popovic, Kirk J. Hogan, Fredric B. Meyer, Klaus Hahnenkamp, Patrick W. Hitchon, L. Clark, M. Geraghty, Qian Shi, R. Struthers, Howard A. Riina, A. Drnda, D. Chartrand, Bradley J. Hindman, S. Salerno, E. Knosp, J. Bramhall, Bruce P. Hermann, A. Ashtari, N. F. Kassell, Steven W. Anderson, Maria Matuszczak, David L. Bogdonoff, B. Schaefer, John C. VanGilder, K. O'Brien, A. McAllister, D. Luu, L. Jensen, Issam A. Awad, P. Chery, S. Wallace, H. Smith, N. Monteirode Oliveira, G. Downey, R. Elbe, A. Wyss, E. Babayan, J. Woletz, H. Gramke, M. Irons, Gavin Fabinyi, O. Odukoya, R. Hendrickson, Vincent C. Traynelis, A. Dashfield, V. Portman, Alessandro Olivi, James J. Evans, A. Prabhu, Peter C. Whitfield, Gary D. Steinberg, S. Rice, H. Machlin, D. Bisnaire, P. Berklayd, G. Kleinpeter, Patricia H. Davis, D. Bain, William F. Chandler, R. Wilson, W. Ng, K. Webb, F. Shutway, D. Manke, W. Pfisterer, K. Smith, M. Mosa, Michael M. Todd, R. Tack, Philip E. Bickler, S. Alatakis, A. Shahen, D. Dehring, David W. Newell, A. Sills, K. Lukitto, Wink S. Fisher, R. Watson, Teresa Bell-Stephens, Donald S. Prough, M. Maleki, D. Nye, M. Graf, S. Nobles, David J. Stone, Hendrik Freise, R. Deam, John Laidlaw, K. Quader, Douglas Campbell, Fred Gentili, S. Hickenbottom, Marlan R. Hansen, W. Jenkins, T. Broderick, Katherine Harris, Gavin W. Britz, M. Langley, Mary Pat McAndrews, Wendy C. Ziai, Behnam Badie, C. Duffy, Deborah A. Rusy, K. Littlewood, T. Anderson, J. Palmisano, H. Stanko, Henry H. Woo, Edward C. Nemergut, C. Bradfield, A. Molnar, John A. Walker, Christina M. Spofford, D. Dulli, A. Kane, J. Birrell, Harry J. M. Lemmens, M. Lotto, Y. Young, J. Biddulph, T. Cunningham, L. Kim, K. Graves, B. Radziszewska, S. Salsbury, Lawrence Litt, S. Black, F. Bardenhagen, M. Angle, L. Connery, Lisa Hannegan, Helen Fletcher, John A. Ulatowski, Steven L. Giannotta, J. Sturm, R. Sawyer, H. Hulbert, A. Morris, James Mitchell, M. von Lewinski, C. Merhaut, L. Salvia, A. Freymuth, James C. Torner, D. Cowie, Bongin Yoo, Y. Kuo, S. Micallef, Kathryn Chaloner, Neil Duggal, J. Ogden, Peter M. C. Wright, K. Pedersen, C. McCleary, P. Mak, Paul H. Ting, S. Shaikh, B. Hodkinson, J. Sneyd, D. Novy, M. Menhusen, N. Quinnine, James H. Fitzpatrick, Timothy G. Short, M. Angliss, R. Burnstein, D. Moskopp, N. Robertson, Mark Buckland, Jeffrey V. Rosenfeld, W. Lilley, T. Phan, D. Greene-Chandos, M. Wichman, David S. Warner, M. Quigley, P. Tanzi, Ferenc E. Gyulai, D. Daly, Satwant K. Samra, B. Frankel, D. Wilhite, L. Lindsey, K. English, M. Lenaerts, Michel T. Torbey, T. Hartman, John E. McGillicuddy, R. Govindaraj, Alex Konstantatos, M. Woodfield, Steven S. Glazier, Steven D. Chang, C. Greiner, F. Steinman, Alex Abou-Chebl, G. Heard, S. Yantha, Michael J. Souter, C. Hoenemann, Nicholas G. Bircher, H. Van Aken, S. Poustie, D. Hill, J. Kish, Carin A. Hagberg, A. Buchmann, B. O'Brien, J. Shafer, J. Krugh, D. Chandrasekara, R. Eliazo, Mary L. Marcellus, Anish Bhardwaj, E. Thomson, H. El-Beheiry, Bermans J. Iskandar, J. Ormrod, D. Milovan, Michael J. Link, Barbara A. Dodson, S. Crump, K. Willmann, H. Madder, William R. Clarke, Max R. Trenerry, Ramez W. Kirollos, James Gebel, Lisa D. Ravdin, D. Sirhan, C. Miller, R. Grauer, Ira J. Rampil, W. Burnett, Marek A. Mirski, D. Chatfield, J. Haartsen, Jing Wang, H. Lohmann, T. Weber, S. Jackson, J. Quaedackers, Michael Beven, N. Scurrah, L. Pobereskin, J. Walkes, Zhiyi Zuo, Rona G. Giffard, J. Ridgley, James H McMahon, P. Bennett, J. Freyhoff, J. Reynolds, R. Chelliah, J. Jane, Basil F. Matta, P. Smythe, I. Gibmeier, A. Mathur, Karen B. Domino, Robert Greif, A. Wray, W. Hamm, C. Hall, Ralph F. Frankowski, H. Brors, Renee Testa, D. Fishback, Laurel E. Moore, Richard A. Jaffe, O. Moise, P. D'Urso, Argye E. Hillis, C. Weasler, Michael Tymianski, E. Tuffiash, Cynthia A. Lien, David M. Colonna, C. Lothaller, S. Bhatia, H. Bone, S. Harding, Diana G. McGregor, Lauren C. Berkow, A. Gelb, Paul A. Leonard, N. Subhas, Emine O. Bayman, William L. Young, A. Rushton, J. Marler, J. Kruger, Donna L. Auer, D. Lindholm, K. Kieburtz, R. Schatzer, D. Leggett, M. Mosier, D. Anderson, Julie B. Weeks, B. Bauer, F. Saleversusky, Mark Wilson, C. Skilbeck, R. Morgan, D. Van Alstine, S. Olson, M. Hemstreet, Y. Painchaud, P. Sutton, A. Blackwell, Christopher M. Loftus, S. Ryan, J. Winn, R. Silbergleit, R. Peters, J. Woelfer, M. Clausen, Daniel H. Kim, James R. Munis, J. Lang, A. Law, N. Badner, Keith H. Berge, D. Ellegala, Kevin H. Siu, Gordon J. Chelune, Rafael J. Tamargo, Rosemary A. Craen, C. Thien, Peter J. Lennarson, S. Wadanamby, R. Peterson, T. Blount, J. Sanders, Amin B. Kassam, Arthur M. Lam, Z. Thayer, N. Lapointe, C. Meade, Robert F. Bedford, Lorri A. Lee, J. Cormack, E. Tuerkkan, L. Carriere, N. Merah, Robert P. From, J. Sorenson, Phillip A. Scott, S. Pai, Neal J. Naff, Andrew Silvers, P. Fogarty-Mack, Jennifer O. Hunt, P. Porter, Guy L. Clifton, Zeyd Ebrahim, F. Rasulo, Pirjo H. Manninen, Derek A. Taggard, Michael J. Harrison, Ian A. Herrick, R. Mattison, Tsutomu Sasaki, P. Deshmukh, L. Forlano, Vladimir Zelman, Carol B. Applebury, John L.D. Atkinson, D. Sage, D. Sinclair, Matthew A. Howard, Elizabeth Richardson, F. Sasse, J. Heidler, Thomas N. Pajewski, J. Mason, P. McNeill, F. Lee, Bruno Giordani, G. Seever, Stephen P. Lownie, M. Wallace, Mark E. Shaffrey, C. Chase, Robert E. Breeze, Monica S. Vavilala, Kenneth Manzel, D. Papworth, Peter J. Kirkpatrick, Jana E. Jones, J. Howell, P. Li, B. Chen, A. Meyer, C. Salem, W. Kutalek, L. Koller, B. Rapf, J. Smith, Mazen A. Maktabi, Howard Yonas, Gregory M. Malham, A. Redmond, C. Moy, G. Henry, Elana Farace, H R Winn, E. Cunningham, Michael P. Murphy, Kevin K. Tremper, C. Chambers, Sesto Cairo, Chuanyao Tong, John Moloney, T. Novick, Z. Sha, Martin S. Angst, S. Laurent, G. Smith, F. Vasarhelyi, R. A. Fry, D. Blair, P. Schmid, Peter A. Rasmussen, Stephen Samples, Peter Szmuk, L. Atkins, J. Smart, T. Han, T. Costello, M. Balki, H. Bybee, C. Salmond, Peter Karzmark, Philip E. Stieg, Harold P. Adams, C. Lind, M. McTaggart, Johnny E. Brian, Pekka Talke, S. Dalrymple, M. Felmlee-Devine, Simon Jones, G. Ghazali, F. Johnson, Patricia H. Petrozza, B. Hindman, A. Shelton, Daniel Tranel, P. Blanton, L. Moss, H. Macgregor, J. Findlay, J. Weeks, Margaret R. Weglinski, Karen Lane, Daniele Rigamonti, Gregory M. Davis, William L. Lanier, Christopher R. Turner, H. Fraley, F. Mensink, P. Balestrieri, V. Petty, Michael T. Lawton, L. Meng, Gary G. Ferguson, L. Sternau, N. Page, Marc R. Mayberg, B Thompson, E. Dy, Tord D. Alden, and P. Doyle-Pettypiece
- Subjects
Perioperative fever ,Adult ,Male ,medicine.medical_specialty ,Subarachnoid hemorrhage ,Neuropsychological Tests ,Severity of Illness Index ,Neurosurgical Procedures ,Statistics, Nonparametric ,Hypothermia, Induced ,Severity of illness ,Medicine ,Humans ,Aged ,Retrospective Studies ,Neurologic Examination ,Intraoperative Care ,business.industry ,Glasgow Outcome Scale ,Incidence ,Retrospective cohort study ,Perioperative ,Middle Aged ,Subarachnoid Hemorrhage ,outcome ,aneurysmal subarachnoid hemorrhage ,medicine.disease ,Hydrocephalus ,Surgery ,Clinical trial ,Logistic Models ,Anesthesia ,Female ,Neurology (clinical) ,Intraoperative Period ,business - Abstract
OBJECTIVE: We examined the incidence of perioperative fever and its relationship to outcome among patients enrolled in the Intraoperative Hypothermia for Aneurysm Surgery Trial. METHODS: One thousand patients with initial World Federation of Neurological Surgeons grades of I to III undergoing clipping of intracranial aneurysms after subarachnoid hemorrhage were randomized to intraoperative normothermia (36 degrees C-37 degrees C) or hypothermia (32.5 degrees C-33.5 degrees C). Fever (> or =38.5 degrees C) and other complications (including infections) occurring between admission and discharge (or death) were recorded. Functional and neuropsychologic outcomes were assessed 3 months postoperatively. The primary outcome variable for the trial was dichotomized Glasgow Outcome Scale (good outcome versus all others). RESULTS: Fever was reported in 41% of patients. In 97% of these, fever occurred in the postoperative period. The median time from surgery to first fever was 3 days. All measures of outcome were worse in patients who developed fever, even in those without infections or who were World Federation of Neurological Surgeons grade I. Logistic regression analyses were performed to adjust for differences in preoperative factors (e.g., age, Fisher grade, initial neurological status). This demonstrated that fever continued to be significantly associated with most outcome measures, even when infection was added to the model. An alternative stepwise model selection process including all fever-related measures from the preoperative and intraoperative period (e.g., hydrocephalus, duration of surgery, intraoperative blood loss) resulted in the loss of significance for dichotomized Glasgow Outcome Scale, but significant associations between fever and several other outcome measures remained. After adding postoperative delayed ischemic neurological deficits to the model, only worsened National Institutes of Health Stroke Scale score, Barthel Activities of Daily Living index, and discharge destination (home versus other) remained independently associated with fever. CONCLUSION: These findings suggest that fever is associated with worsened outcome in surgical subarachnoid hemorrhage patients, although, because the association between fever and the primary outcome measure for the trial is dependent on the covariates used in the analysis (particularly operative events and delayed ischemic neurological deficits), we cannot rule out the possibility that fever is a marker for other events. Only a formal trial of fever treatment or prevention can address this issue.
- Published
- 2009
17. VLC Using 800-μm Diameter APD Receiver Integrated in Standard 0.35-μm BiCMOS Technology
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D. Milovancev, T. Jukic, N. Vokic, P. Brandl, B. Steindl, and H. Zimmermann
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VLC ,avalanche photodiodes ,integrated optoelectronics ,Applied optics. Photonics ,TA1501-1820 ,Optics. Light ,QC350-467 - Abstract
The fully integrated 800 μm. diameter avalanche photodiode optical receiver is implemented in 0.35 μm BiCMOS technology without any process modifications. The integrated receiver reaches sensitivities of -33 dBm at 1 Gbit/s and -29.3 dBm at 2 Gbit/s. The reached sensitivities are well within the state-of-the-art of integrated avalanche photodiode receivers and can even be compared to a hybrid avalanche photodiode receiver comprised of high-performing commercial components. The performance of the designed receiver was verified in visible light communication experiments. The receiver could reach up to 16.5 m at 2 Gbit/s and 27 m at 1 Gbit/s of error free transmission distance using a 675-nm point laser source as transmitter. The common indoor illuminance levels up to 500 lux could be tolerated when pointed directly towards the receiver. High sensitivity and high speed make this integrated receiver suitable for future optical wireless communication systems, where due to its integrated nature the manufacturing cost can be lowered, and at the same time the design is compact in size and easy to assemble and scale. Furthermore, no optics is used in front of the receiver due to its large area resulting in a wide field of view.
- Published
- 2021
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18. Optimizovana sinteza značajnog farmaceutskog intermedijera metil 4-[(1-oksopropil)fenilamino]piperidin-4-karboksilata
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I Ljiljana Dosen-Micovic, D Vesna Kiricojevic, D Milovan Ivanovic, Jasna Djordjevic, M Goran Roglic, and I.V. Micovic
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fentanyl-type central analgesics ,010405 organic chemistry ,optimized Strecker reaction ,General Chemistry ,optimized strecker reaction ,010402 general chemistry ,01 natural sciences ,0104 chemical sciences ,Catalysis ,lcsh:Chemistry ,Propionyl chloride ,chemistry.chemical_compound ,Hydrolysis ,Aniline ,lcsh:QD1-999 ,chemistry ,Yield (chemistry) ,Narcotic analgesics ,Organic chemistry ,Piperidine ,Carboxylate ,functionalized piperidines - Abstract
An efficient synthesis of methyl 4-[(1-oxopropyl)phenylamino]piperidine-4-carboxylate (7) has been developed starting from 1-benzylpiperidin-4-one (1). The compound is a key intermediate in the synthesis of new generation, highly active narcotic analgesics, such as remifintanil, as well as the novel classes of fentanyl analogues. An optimized Strecker-type condensation of piperidone 1 with aniline and HCN yielded the anilino-nitrile 2(≈90%) which, upon selective hydrolysis with conc. H2SO4, gave the anilino-amide 3.After vigorous basic hydrolysis of 3, followed by acidification and successive treatment with SOCl2 and MeOH, the anilino-ester 5 was obtained (40–45%, in 3 steps). N-Acylation of 5 with propionyl chloride yielded the anilido-ester 6(70–80%) In the final step, the catalytic N-debenzylation of 6 was examined under various conditions and optimized to yield 7 in near quantitative yields. U ovom radu razvijena je efikasna sinteza metil 4-[(1-oksopropil)fenilamino]piperidin-4-karboksilata (7), prolazeći od 1-benzil piperidin-4-on-1 (1). Jedinjenje 7 je ključni intermedijer u sintezi nove generacije visoko aktivnih narkotičkih analgetika, kao što je remifentanil a takođe i novih klasa analoga fentanyla. U optimizovanoj Strecker-ovoj kondenzaciji priperidona 1 sa anilinom i HCN, dobijen je anilino-nitril 2 (≈90%) prinos čijom je selektivnom hidrolizom pomoću konc. H2SO4 postao anilino-amid 3. Intenzivnom baznom hidrolizom ovog intermedijera, zakišeljavanjem a zatim sukcesivno reakcijom sa SOCl2 i MeOH sintetisan je anilino-estar 5 (≈40–45% prinos u 3 faze). N-acelovanjem anilino-estra 5 sa propionil hloridom postao je anilido-estar 6 (≈70–80% prinos). U poslednjom fazi sinteze izvršena je optimizacija katalitičkog N-debenzilovanja anilido-estra 6 do finalnog proizvoda 7, u približno kvantitativnom prinosu.
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- 2002
19. P.6.c.0101 Pharmacodynamic response patterns to ketamine, zolpidem, and diazepam in abuse liability studies
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D. Milovan, S.J. Kovacs, E.M. Sellers, and M.K. Rotnach
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Pharmacology ,Zolpidem ,business.industry ,Psychiatry and Mental health ,Neurology ,Anesthesia ,Pharmacodynamics ,Abuse liability ,Medicine ,Pharmacology (medical) ,Ketamine ,Neurology (clinical) ,business ,Diazepam ,Biological Psychiatry ,medicine.drug - Published
- 2009
20. Processing negativity in schizotypal university students
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D. Milovan, Robert M. Roth, and J. Baribeau
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Processing negativity ,Psychology ,Biological Psychiatry ,Cognitive psychology - Published
- 1996
21. Effect of eslicarbazepine acetate and oxcarbazepine on cognition and psychomotor function in healthy volunteers.
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Milovan D, Almeida L, Romach MK, Nunes T, Rocha JF, Sokowloska M, Sellers EM, and Soares-da-Silva P
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- Adult, Attention drug effects, Blood Pressure drug effects, Carbamazepine pharmacology, Dose-Response Relationship, Drug, Drug Administration Schedule, Follow-Up Studies, Heart Rate drug effects, Humans, Learning drug effects, Middle Aged, Neuropsychological Tests, Oxcarbazepine, Reaction Time drug effects, Single-Blind Method, Statistics, Nonparametric, Young Adult, Anticonvulsants pharmacology, Carbamazepine analogs & derivatives, Cognition drug effects, Dibenzazepines pharmacology, Psychomotor Performance drug effects
- Abstract
The results of two single-blind studies conducted to evaluate the cognitive and psychomotor effects of eslicarbazepine acetate and oxcarbazepine following single and repeated administration in healthy volunteers are reported. The cognitive and psychomotor evaluation consisted of several computerized and paper-and-pencil measures. Eslicarbazepine acetate and oxcarbazepine had similar overall cognitive profiles and did not cause clinically relevant cognitive impairment. The incidence of adverse events was lower with eslicarbazepine acetate than with oxcarbazepine., (Copyright 2010. Published by Elsevier Inc.)
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- 2010
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22. The NIH MRI study of normal brain development: performance of a population based sample of healthy children aged 6 to 18 years on a neuropsychological battery.
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Waber DP, De Moor C, Forbes PW, Almli CR, Botteron KN, Leonard G, Milovan D, Paus T, and Rumsey J
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- Adolescent, Child, Child, Preschool, Community Health Planning, Female, Humans, Longitudinal Studies, Male, National Institutes of Health (U.S.), Sex Factors, United States, Behavior physiology, Brain growth & development, Child Development physiology, Magnetic Resonance Imaging methods, Mental Processes physiology, Neuropsychological Tests statistics & numerical data
- Abstract
The National Institutes of Health (NIH) Magnetic Resonance Imaging (MRI) Study of Normal Brain Development is a landmark study in which structural and metabolic brain development and behavior are followed longitudinally from birth to young adulthood in a population-based sample of healthy children. The neuropsychological assessment protocol for children aged 6 to 18 years is described and normative data are presented for participants in that age range (N = 385). For many measures, raw score performance improved steeply from 6 to 10 years, decelerating during adolescence. Sex differences were documented for Block Design (male advantage), CVLT, Pegboard and Coding (female advantage). Household income predicted IQ and achievement, as well as externalizing problems and social competence, but not the other cognitive or behavioral measures. Performance of this healthy sample was generally better than published norms. This linked imaging-clinical/behavioral database will be an invaluable public resource for researchers for many years to come.
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- 2007
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23. Neuropsychological functioning in early- and late-onset obsessive-compulsive disorder.
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Roth RM, Milovan D, Baribeau J, and O'Connor K
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- Adolescent, Adult, Affect physiology, Age of Onset, Aged, Attention physiology, Child, Female, Humans, Male, Memory physiology, Middle Aged, Psychiatric Status Rating Scales, Psychomotor Performance physiology, Sex Characteristics, Neuropsychological Tests, Obsessive-Compulsive Disorder psychology
- Abstract
Significant relationships have been noted between age of onset and demographics, clinical characteristics, and cerebral metabolic activity in obsessive-compulsive disorder (OCD). The authors investigated whether patients with early (N=21) and late (N=17) onset OCD differ with respect to neuropsychological functioning. Results revealed that the late onset OCD group obtained poorer scores on measures of executive function and auditory attention than the early onset group. Late onset OCD was also associated with poorer visual memory relative to healthy comparison subjects. These findings suggest that early and late onset OCD may be the result of at least partially differing neurobiological mechanisms.
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- 2005
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24. Procedural and declarative memory in obsessive-compulsive disorder.
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Roth RM, Baribeau J, Milovan D, O'Connor K, and Todorov C
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- Adolescent, Adult, Aged, Case-Control Studies, Female, Humans, Male, Middle Aged, Neuropsychological Tests, Psychomotor Performance physiology, Verbal Learning physiology, Memory, Short-Term physiology, Mental Recall physiology, Obsessive-Compulsive Disorder physiopathology
- Abstract
Obsessive-compulsive disorder (OCD) has been associated with frontostriatal abnormality. This has led to the hypothesis that the disorder is characterized by abnormality of procedural memory. However, evidence for either procedural or declarative memory disturbance has been mixed, and few studies have directly assessed both of these forms of memory in the same patient group. In the present study, we assessed encoding and retrieval in declarative memory using the Rey Auditory Verbal Learning Test (RAVLT), and procedural memory using the Pursuit Rotor Task, in 27 adults with OCD and 29 matched healthy controls. Groups did not differ with respect to salient demographic characteristics or memory on the RAVLT. In contrast, patients with OCD performed significantly better than controls during the early, but not later trial blocks of the Pursuit Rotor Task. This pattern of results indicates intact encoding and retrieval in declarative memory, but abnormally enhanced procedural memory during the early course of learning in OCD. These findings may be consistent with striatal overactivation observed in neuroimaging studies of OCD, as well as the prominent role of the striatum during early stages of procedural memory.
- Published
- 2004
- Full Text
- View/download PDF
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