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Bilde av Kondratyev, Timofey
Bilde av Kondratyev, Timofey
Senior engineer Department of Medical Biology timofey.kondratiev@uit.no +4777644780 95215728 You can find me here

Timofey Kondratyev

Job description

Work with experimental animal models, statistical data analysis (SigmaPlot), 3D modelling (Autodesk Fusion 360), 3D printing, laboratory work, laboratory maintainance, updating of the Chemical Database CHESS, chemicals and hazard waste handling at the Cardiovascular Research Group, Department of Medical Biology, Faculty of Health Sciences.

Work areas

Instrumentation / Laboratory operation / Measurement technique / Training / Printing
  • Adrina Kalasho, Anders Lund Selli, Markus Furuholmen, Natalia Smaglyukova, Timofey Kondratyev, Ole Martin Fuskevåg et al.:
    Moderate but not severe hypothermia increases intracellular cyclic AMP through preserved production and reduced elimination
    Cryobiology 2023 ARKIV / DOI
  • Adrina Kalasho, Anders Lund Selli, Natalia Smaglyukova, Timofey Kondratyev, Ole Martin Fuskevåg, Roy Andre Lyså et al.:
    Treatment of Cardiovascular Dysfunction with PDE3-Inhibitors in Moderate and Severe Hypothermia—Effects on Cellular Elimination of Cyclic Adenosine Monophosphate and Cyclic Guanosine Monophosphate
    Frontiers in Physiology 2022 ARKIV / DOI
  • Anders Lund Selli, Adrina Kalasho, Natalia Smaglyukova, Timofey Kondratyev, Ole Martin Fuskevåg, Georg Sager et al.:
    Pharmacodynamic properties for inhibition of cAMP- and cGMP elimination by pentoxifylline remain unaltered in vitro during hypothermia
    Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine 2022 ARKIV / DOI
  • Ole Magnus Filseth, Stig Eggen Hermansen, Timofey Kondratyev, Gary C. Sieck, Torkjel Tveita :
    Cooling to hypothermic circulatory arrest by immersion vs. cardiopulmonary bypass (CPB): Worse outcome after rewarming in immersion cooled pigs
    Frontiers in Physiology 31. March 2022 ARKIV / DOI
  • Torstein Lindahl Schanche, Ole Magnus Filseth, Bjarne Østerud, Timofey Kondratyev, Gary C. Sieck, Torkjel Tveita :
    Enhanced Blood Clotting After Rewarming From Experimental Hypothermia in an Intact Porcine Model
    Frontiers in Physiology 2022 ARKIV / DOI
  • Sergei Valkov, Jan Harald Nilsen, Rizwan Mohyuddin, Torstein Lindahl Schanche, Timofey Kondratyev, Gary C. Sieck et al.:
    Autoregulation of Cerebral Blood Flow During 3-h Continuous Cardiopulmonary Resuscitation at 27°C
    Frontiers in Physiology 2022 ARKIV / DOI
  • Ole Magnus Filseth, Timofey Kondratyev, Gary C. Sieck, Torkjel Tveita :
    Functional recovery after accidental deep hypothermic cardiac arrest: Comparison of different cardiopulmonary bypass rewarming strategies
    Frontiers in Physiology 2022 ARKIV / DOI
  • Joar O. Nivfors, Rizwan Mohyuddin, Torstein Schanche, Jan Harald Nilsen, Sergey Valkov, Timofey Kondratyev et al.:
    Rewarming With Closed Thoracic Lavage Following 3-h CPR at 27°C Failed to Reestablish a Perfusing Rhythm
    Frontiers in Physiology 2021 ARKIV / DOI
  • Anders Lund Selli, Adrina Kalasho Kuzmiszyn, Natalia Smaglyukova, Timofey Kondratyev, Ole Martin Fuskevåg, Roy Andre Lyså et al.:
    Treatment of cardiovascular dysfunction with PDE5-inhibitors - temperature dependent effects on transport and metabolism of cAMP and cGMP
    Frontiers in Physiology 2021 ARKIV / DOI
  • Svein E. Gaustad, Timofey Kondratyev, Ingrid Eftedal, Torkjel Tveita :
    Effects of Cold Decompression on Hemodynamic Function and Decompression Sickness Risk in a Dry Diving Rat Model
    Frontiers in Physiology 2021 ARKIV / DOI
  • Rizwan Mohyuddin, Erik Sveberg Dietrichs, Predip Sundaram, Timofey Kondratyev, Marie Figenschou, Gary C. Sieck et al.:
    Cardiovascular Effects of Epinephrine During Experimental Hypothermia (32°C) With Spontaneous Circulation in an Intact Porcine Model
    Frontiers in Physiology 2021 ARKIV / DOI
  • Jan Harald Nilsen, Torstein Lindahl Schanche, Sergey Valkov, Rizwan Mohyuddin, Brage Håheim, Timofey Kondratyev et al.:
    Effects of rewarming with extracorporeal membrane oxygenation to restore oxygen transport and organ blood flow after hypothermic cardiac arrest in a porcine model
    Scientific Reports 23. September 2021 ARKIV / DOI
  • Erik Sveberg Dietrichs, Anders Lund Selli, Timofey Kondratyev, Karen McGlynn, Godfrey L Smith, Torkjel Tveita :
    Resistance to ventricular fibrillation predicted by the QRS/QTc - ratio in an intact rat model of hypothermia/rewarming
    Cryobiology 2021 ARKIV / DOI
  • Jan Harald Nilsen, Torstein Schanche, Timofey Kondratyev, Olav Hevrøy, Gary C. Sieck, Torkjel Tveita :
    Maintaining intravenous volume mitigates hypothermia-induced myocardial dysfunction and accumulation of intracellular Ca2+
    Experimental Physiology 2021 ARKIV / DOI
  • Svein Erik Gaustad, Timofey Kondratyev, Ingrid Eftedal, Torkjel Tveita :
    Continuous Hemodynamic Monitoring in an Intact Rat Model of Simulated Diving
    Frontiers in Physiology 13. January 2020 ARKIV / DOI
  • Jan Harald Nilsen, Sergey Valkov, Rizwan Mohyuddin, Torstein Lindahl Schanche, Timofey Kondratyev, Torvind Næsheim et al.:
    Study of the effects of 3 h of continuous cardiopulmonary resuscitation at 27°C on global oxygen transport and organ blood flow
    Frontiers in Physiology 2020 ARKIV / DOI
  • Brage Håheim, Timofey Kondratyev, Erik Sveberg Dietrichs, Torkjel Tveita :
    Comparison between two pharmacologic strategies to alleviate rewarming shock: vasodilation vs. inodilation
    Frontiers in medicine 2020 ARKIV / DOI
  • Torstein Lindahl Schanche, Timofey Kondratyev, Torkjel Tveita :
    Extracorporeal rewarming from experimental hypothermia: Effects of hydroxyethyl starch versus saline priming on fluid balance and blood flow distribution
    Experimental Physiology 2019 ARKIV / DOI
  • Vladimir Kuklin, Nurlan Akhatov, Timofey Kondratyev, Aidos Konkaev, Abay K. Baigenzhin, Maya Konkaeva et al.:
    The influences of morphine or ketamine pre-treatment on hemodynamic, acid-base status, biochemical markers of brain damage and early survival in rats after asphyxial cardiac arrest
    BMC Anesthesiology 2019 ARKIV / DOI
  • Sergey Valkov, Rizwan Mohyuddin, Jan Harald Nilsen, Torstein Lindahl Schanche, Timofey Kondratyev, Gary C. Sieck et al.:
    Organ blood flow and O2 transport during hypothermia (27°C) and rewarming in a pig model
    Experimental Physiology 29. October 2018 FULLTEKST / DOI
  • Erik Sveberg Dietrichs, Brage Håheim, Timofey Kondratyev, Erik R. Traasdahl, Torkjel Tveita :
    Effects of hypothermia and rewarming on cardiovascular autonomic control in vivo
    Journal of applied physiology 2018 DOI
  • Brage Håheim, Timofey Kondratyev, Erik Sveberg Dietrichs, Torkjel Tveita :
    The beneficial hemodynamic effects of afterload reduction by sodium nitroprusside during rewarming from experimental hypothermia
    Cryobiology 2017 DOI
  • Kathrine Halsøy, Timofey Kondratyev, Torkjel Tveita, Lars J. Bjertnaes :
    Effects of Constant Flow vs. Constant Pressure Perfusion on Fluid Filtration in Severe Hypothermic Isolated Blood-Perfused Rat Lungs
    Frontiers in medicine 2016 ARKIV / DOI
  • Erik Sveberg Dietrichs, Torstein Schanche, Timofey Kondratyev, Svein Erik Gaustad, Georg Sager, Torkjel Tveita :
    Negative inotropic effects of epinephrine in the presence of increased β-adrenoceptor sensitivity during hypothermia in a rat model
    Cryobiology 2015 DOI
  • Erik Sveberg Dietrichs, Timofey Kondratyev, Torkjel Tveita :
    Milrinone ameliorates cardiac mechanical dysfunction after hypothermia in an intact rat model
    Cryobiology 2014 DOI
  • Erik Sveberg Dietrichs, Brage Håheim, Timofey Kondratyev, Gary C. Sieck, Torkjel Tveita :
    Cardiovascular effects of levosimendan during rewarming from hypothermia in rat
    Cryobiology 30. September 2014 DOI
  • Ragnhild Margrete Wold, Timofey Kondratyev, Torkjel Tveita :
    Myocardial calcium overload during graded hypothermia and after rewarming in an in vivo rat model
    Acta Physiologica 2013 DOI
  • Ole Magnus Filseth, Ole-Jakob How, Timofey Kondratyev, Tor Magne Gamst, Georg Sager, Torkjel Tveita :
    Changes in cardiovascular effects of dopamine in response to graded hypothermia in vivo
    Critical Care Medicine 2012 DOI
  • Evgeny Suborov, Alexey Anatolievich Smetkin, Timofey Kondratyev, Andrey Yurjevich Valkov, Vsevolod Kuzkov, Mikhail Kirov et al.:
    Inhibitor of neuronal nitric oxide synthase improves gas exchange in ventilator-induced lung injury after pneumonectomy
    BMC Anesthesiology 2012 ARKIV / DOI
  • Ole Magnus Filseth, Ole-Jakob How, Timofei Kondratiev, Tor Magne Gamst, Torkjel Tveita :
    Post-hypothermic cardiac left ventricular systolic dysfunction after rewarming in an intact pig model
    Critical Care 2010 FULLTEKST / DOI
  • Assami Rösner, Ole-Jakob How, Erling Johan Aarsæther, Thor Allan Stenberg, Thomas Vennø Andreasen, Timofei Kondratiev et al.:
    High Resolution Speckle Tracking Dobutamine Stress Echocardiography Reveals Heterogeneous Responses in Different Myocardial Layers: Implication for Viability Assessments
    Journal of the American Society of Echocardiography 2010 DOI
  • ys han, Torkjel Tveita, Timofei Kondratiev, y s prakash, GC Sieck :
    changes in cardiovascular beta-adrenoceptor responses during hypothermia
    Cryobiology 2008
  • Timofei Kondratiev, Ragnhild Margrete Wold, Ellen Aasum, Torkjel Tveita :
    Myocardial mechanical dysfunction and calcium overload following rewarming from experimental hypothermia in vivo
    Cryobiology 2008 DOI
  • Timofei Kondratiev, Eivind S.P. Myhre, Øystein Thunheim Simonsen, Tor-Bjarne Nymark, Torkjel Tveita :
    Cardiovascular effects of epinephrine during rewarming from hypothermia in an intact animal model
    Journal of applied physiology 2006 DOI
  • Timofei Kondratiev, Torkjel Tveita :
    Effects of sympathetic stimulation during cooling on hypothermic as well as posthypothermic hemodynamic function
    Canadian Journal of Physiology and Pharmacology 2006 SAMMENDRAG / DOI
  • Elena Egorina, Mikhail Sovershaev, Timofei Kondratiev, Jan Ole Olsen, Torkjel Tveita, Bjarne Østerud :
    Induction of monocytic TF expression after rewarming from hypothermia in vivo is counteracted by heat shock in c-Jun-dependent manner
    Arteriosclerosis, Thrombosis and Vascular Biology 2006
  • Timofei Kondratiev, Kristina Flemming, Eivind S. P. Myhre, Mikhail Sovershaev, Torkjel Tveita :
    Is oxygen supply a limiting factor for survival during rewarming from profound hypothermia?
    American Journal of Physiology. Heart and Circulatory Physiology 2006
  • Anders Lund Selli, Adrina Kalasho, Natalia Nikolaevna Smaglyukova, Timofey Kondratyev, Ole Martin Fuskevåg, Georg Sager et al.:
    Correction to: Pharmacodynamic properties for inhibition of cAMP- and cGMP elimination by pentoxifylline remain unaltered in vitro during hypothermia (Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine, (2022), 30, 1, (73), 10.1186/s13049-022-01060-y)
    Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine 2024 DOI
  • Vladimir Kuklin, Timofey Kondratyev, Maya Konkaeva, Nurlan Akhatov, MA Sovershaev, Aidos Konkaev et al.:
    EFFECTS OF MORPHINE OR KETAMINE IN RATS WITH ASPHYXIAL CARDIAC ARREST: THE RESULTS OF PILOT STUDY
    2017
  • Vladimir Kuklin, Timofey Kondratyev, Maya Konkayeva, Nurlan Akhatov, Mikhail Sovershaev, Aidos Konkayev et al.:
    Effects of morphine or ketamine in rats with asphyxial cardiac arrest: a pilot study
    2017 ARKIV / DATA / FULLTEKST
  • Ole-Jakob How, Torvind Næsheim, Jens Petter Bakkehaug, Timofey Kondratyev, Espen W. Remme, Truls Myrmel :
    Elevated preload is critical for synchronization of myocardial lengthening (e) and mitral inflow (E) in acute ischemic acute heart failure
    The FASEB Journal 2013
  • Ole magnus Filseth, Ole-Jakob How, Timofei Kondratiev, Tor Magne Gamst, Torkjel Tveita :
    CARDIAC FUNCTION DURING SEVERE IMMERSION HYPOTHERMIA AND REWARMING IN PIGS
    Intensive Care Medicine 2010
  • OM Filseth, Ole-Jakob How, Timofei Kondratiev, Tor Magne Gamst, Georg Sager, Torkjel Tveita :
    DOPAMINE INFUSIONS IN NORMOTHERMIA, SEVERE HYPOTHERMIA AND DURING REWARMING: PHARMACOKINETICS AND CARDIOVASCULAR FUNCTION IN A PIG MODEL OF SURFACE COOLING AND REWARMING
    Intensive Care Medicine 2010
  • Svein Erik Gaustad, Timofei Kondratiev, Andreas Møllerløkken, Ulrik Wisløff, Alf O Brubakk, Torkjel Tveita :
    Dynamic changes in cardiovascular function during diving and decompression at different core temperatures
    2010
  • Erik Sveberg Dietrichs, Timofei Kondratiev, Torkjel Tveita :
    Cardiovascular effects of milrinone during rewarming from hypothermia in an intact animal model
    2009
  • YS Han, Torkjel Tveita, Timofei Kondratiev, YS Prakash, GC Sieck :
    The physiologic response to isoproterenol during hypothermia and rewarming
    The FASEB Journal 2007
  • YS Han, Torkjel Tveita, Timofei Kondratiev, GC Sieck :
    Change in physiologic response to isoproterenol induced by hypothermia is not reversed by rewarming
    Acta Anaesthesiologica Scandinavica 2007
  • Timofei Kondratiev, torkjel Tveita :
    Hypothermia-induced myocardial dysfunction. An in vivo experimental study with special reference to effects of epinephrine applied for posthypothermic cardiovascular resuscitation
    UiT Norges arktiske universitet 2006
  • elena Egorina, Mikhail Sovershaev, Timofei Kondratiev, Jan Ole Olsen, torkjel Tveita, Bjarne Østerud :
    Heat Shock Prevents Tissue Factor Induction after Rewarming from Lethal Hypothermia in a c-Jun-Dependent Manner
    2006
  • elena Egorina, Mikhail Sovershaev, Timofei Kondratiev, Jan Ole Olsen, torkjel Tveita, Bjarne Østerud :
    Heat shock prevents tissue factor expression after rewarming from lethal hypothermia in c-Jun-dependent manner
    2006

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