Michael Tchirikov

Summary

Affiliation: University of Hamburg
Country: Germany

Publications

  1. ncbi request reprint Ductus venosus shunting in marmoset and baboon fetuses
    M Tchirikov
    Department of Obstetrics and Fetal Medicine, Universitatsklinikum Hamburg Eppendorf, Hamburg, Germany
    Ultrasound Obstet Gynecol 26:252-7. 2005
  2. ncbi request reprint Ductus venosus shunting in the fetal venous circulation: regulatory mechanisms, diagnostic methods and medical importance
    M Tchirikov
    Department of Obstetrics, University Medical Center Hamburg Eppendorf, Germany
    Ultrasound Obstet Gynecol 27:452-61. 2006
  3. ncbi request reprint Liver blood perfusion as a possible instrument for fetal growth regulation
    M Tchirikov
    Universitatsklinikum Hamburg Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
    Placenta 23:S153-8. 2002
  4. ncbi request reprint Umbilical vein blood volume flow rate and umbilical artery pulsatility as 'venous-arterial index' in the prediction of neonatal compromise
    M Tchirikov
    Universitatsklinikum Hamburg Eppendorf, Klinik fur Frauenheilkunde und Geburtshilfe, Abteilung für Experimentelle Gynäkologie, Hamburg, Germany
    Ultrasound Obstet Gynecol 20:580-5. 2002
  5. pmc Differential effects of catecholamines on vascular rings from ductus venosus and intrahepatic veins of fetal sheep
    Mikhail Tchirikov
    Universitatsklinikum Hamburg Eppendorf, Klinik fur Frauenheilkunde und Geburtshilfe, Institut für Experimentelle Gynäkologie, Martinistrasse 52, Germany
    J Physiol 548:519-26. 2003
  6. ncbi request reprint Pulmonary circulation of fetal sheep with lung hyperplasia following tracheal occlusion
    M Tchirikov
    Universitatsklinikum Hamburg Eppendorf, Department of Obstetrics and Fetal Medicine, Hamburg, Germany
    Ultrasound Obstet Gynecol 25:277-81. 2005
  7. ncbi request reprint Structural evidence for mechanisms to redistribute hepatic and ductus venosus blood flows in nonhuman primate fetuses
    Mikhail Tchirikov
    Universitatsklinikum Hamburg Eppendorf, Department of Obstetrics and Fetal Medicine, Hamburg, Germany
    Am J Obstet Gynecol 192:1146-52. 2005
  8. ncbi request reprint The ductus venosus and intrahepatic venous system in Callithrix jacchus jacchus and Macaca fascicularis fetuses
    Michael Tchirikov
    Department of Obstetrics and Fetal Medicine, University Medical Centre Hamburg Eppendorf, Hamburg, Germany
    J Med Primatol 35:18-24. 2006
  9. ncbi request reprint Obstruction of ductus venosus stimulates cell proliferation in organs of fetal sheep
    M Tchirikov
    , , Martinistr. 52, 20246 Hamburg, Germany
    Placenta 22:24-31. 2001
  10. ncbi request reprint Unloading of baroreceptors by carotid occlusion does not increase heart rate in fetal sheep
    H J Schröder
    Abteilung für experimentelle Medizin, Martinistr 52, 20246, Hamburg, Germany
    Eur J Obstet Gynecol Reprod Biol 92:265-72. 2000

Detail Information

Publications17

  1. ncbi request reprint Ductus venosus shunting in marmoset and baboon fetuses
    M Tchirikov
    Department of Obstetrics and Fetal Medicine, Universitatsklinikum Hamburg Eppendorf, Hamburg, Germany
    Ultrasound Obstet Gynecol 26:252-7. 2005
    ..Although primate fetuses may serve to study the function of this important venous shunt, the rate of DV shunting has not been determined in non-human primates under normal conditions...
  2. ncbi request reprint Ductus venosus shunting in the fetal venous circulation: regulatory mechanisms, diagnostic methods and medical importance
    M Tchirikov
    Department of Obstetrics, University Medical Center Hamburg Eppendorf, Germany
    Ultrasound Obstet Gynecol 27:452-61. 2006
    ....
  3. ncbi request reprint Liver blood perfusion as a possible instrument for fetal growth regulation
    M Tchirikov
    Universitatsklinikum Hamburg Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
    Placenta 23:S153-8. 2002
    ..The expression of mRNA for IGF-I and IGF-II in the liver was increased in the DV(coil) group. In conclusion, these results suggest that liver blood perfusion can regulate fetal growth...
  4. ncbi request reprint Umbilical vein blood volume flow rate and umbilical artery pulsatility as 'venous-arterial index' in the prediction of neonatal compromise
    M Tchirikov
    Universitatsklinikum Hamburg Eppendorf, Klinik fur Frauenheilkunde und Geburtshilfe, Abteilung für Experimentelle Gynäkologie, Hamburg, Germany
    Ultrasound Obstet Gynecol 20:580-5. 2002
    ..To assess the diagnostic power of the umbilical venous-arterial index (VAI) for the prediction of poor fetal outcome...
  5. pmc Differential effects of catecholamines on vascular rings from ductus venosus and intrahepatic veins of fetal sheep
    Mikhail Tchirikov
    Universitatsklinikum Hamburg Eppendorf, Klinik fur Frauenheilkunde und Geburtshilfe, Institut für Experimentelle Gynäkologie, Martinistrasse 52, Germany
    J Physiol 548:519-26. 2003
    ..DV sparing can be attributed to an increased resistance of IHVs to catecholamines compared with the DV. The different responses can be explained by different anatomical and functional properties of the two vessel types...
  6. ncbi request reprint Pulmonary circulation of fetal sheep with lung hyperplasia following tracheal occlusion
    M Tchirikov
    Universitatsklinikum Hamburg Eppendorf, Department of Obstetrics and Fetal Medicine, Hamburg, Germany
    Ultrasound Obstet Gynecol 25:277-81. 2005
    ..To determine the alteration of blood flow velocity profile in the pulmonary arteries (PAs) of fetal sheep after tracheal occlusion (TO)...
  7. ncbi request reprint Structural evidence for mechanisms to redistribute hepatic and ductus venosus blood flows in nonhuman primate fetuses
    Mikhail Tchirikov
    Universitatsklinikum Hamburg Eppendorf, Department of Obstetrics and Fetal Medicine, Hamburg, Germany
    Am J Obstet Gynecol 192:1146-52. 2005
    ..However, the anatomic and histologic structure of the DV and the BPV have not been thoroughly investigated in any nonhuman primate species...
  8. ncbi request reprint The ductus venosus and intrahepatic venous system in Callithrix jacchus jacchus and Macaca fascicularis fetuses
    Michael Tchirikov
    Department of Obstetrics and Fetal Medicine, University Medical Centre Hamburg Eppendorf, Hamburg, Germany
    J Med Primatol 35:18-24. 2006
    ..The anatomical and histological structure of the DV has not been thoroughly investigated in non-human primate species...
  9. ncbi request reprint Obstruction of ductus venosus stimulates cell proliferation in organs of fetal sheep
    M Tchirikov
    , , Martinistr. 52, 20246 Hamburg, Germany
    Placenta 22:24-31. 2001
    ..It is concluded that increases of hepatic blood flow stimulate cell proliferation in major organs of the ovine fetus...
  10. ncbi request reprint Unloading of baroreceptors by carotid occlusion does not increase heart rate in fetal sheep
    H J Schröder
    Abteilung für experimentelle Medizin, Martinistr 52, 20246, Hamburg, Germany
    Eur J Obstet Gynecol Reprod Biol 92:265-72. 2000
    ..It seems likely that stimulation of carotid chemoreceptors prevents the expected baroreceptor mediated heart-rate response...
  11. ncbi request reprint Doppler ultrasound measurements in the central circulation of anesthetized fetal sheep during obstruction of umbilical-placental blood flow
    M Tchirikov
    Division of Experimental Medicine, Department of Obstetrics and Gynecology, , Martinistrasse 52, 20246 Hamburg, Germany
    Ultrasound Obstet Gynecol 18:656-61. 2001
    ..Compression of the umbilical cord shifts down blood flow velocity profiles in the ductus venosus, and the pulsatility index thus increases...
  12. doi request reprint Laser coagulation of placental anastomoses with a 30 degrees fetoscope in severe mid-trimester twin-twin transfusion syndrome with anterior placenta
    A Huber
    Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg Eppendorf UKE, Hamburg, Germany
    Ultrasound Obstet Gynecol 31:412-6. 2008
    ....
  13. doi request reprint Cardiac output following fetoscopic coagulation of major placental vessels in fetal sheep
    M Tchirikov
    Department of Obstetrics and Fetal Medicine, Johannes Gutenberg Universitat Mainz, University Medical Center Mainz, Mainz, Germany
    Ultrasound Obstet Gynecol 32:917-22. 2008
    ....
  14. doi request reprint Successful tracheal occlusion using ultrathin fetoscopic equipment combined with real-time three-dimensional ultrasound
    M Tchirikov
    Department of Obstetrics and Fetal Medicine, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
    Eur Surg Res 43:204-7. 2009
    ..Ultrathin fetoscopy may be a method of reducing the risk of PPROM...
  15. ncbi request reprint Fetal brain volume measurements by magnetic resonance imaging
    T Andreas
    Unit of Experimental Fetal Maternal Medicine, University Medical Center Hamburg Eppendorf, Hamburg, Germany
    Ultrasound Obstet Gynecol 27:588-9. 2006
  16. doi request reprint Prenatal diagnosis of a recombinant chromosome 7 resulting in trisomy 7q11.22 --> qter
    M Tchirikov
    Department of Obstetrics and Fetal Medicine, University Medical Center Mainz, Mainz, Germany
    Am J Med Genet A 152:721-5. 2010
    ..Invasive prenatal diagnosis must be offered to the parents...
  17. doi request reprint Dilation of the ductus venosus by stent implantation increases placental blood perfusion in fetal sheep
    Michael Tchirikov
    University Clinic of Obstetrics and Gynecology, Johannes Gutenberg University of Mainz, Mainz, Germany
    Am J Obstet Gynecol 198:138.e1-6. 2008
    ..The present study investigated the influence of the increased diameter of the DV on placental blood perfusion...