M Dehnhard

Summary

Affiliation: Institute for Zoo and Wildlife Research
Country: Germany

Publications

  1. ncbi Noninvasive monitoring of adrenocortical activity in roe deer (Capreolus capreolus) by measurement of fecal cortisol metabolites
    M Dehnhard
    , Berlin, Germany
    Gen Comp Endocrinol 123:111-20. 2001
  2. ncbi Using PGFM (13,14-dihydro-15-keto-prostaglandin F2α) as a non-invasive pregnancy marker for felids
    M Dehnhard
    Leibniz Institute for Zoo and Wildlife Research, PF 601103, D 10252 Berlin, Germany
    Theriogenology 77:1088-99. 2012
  3. ncbi Demonstration of 2-unsaturated C19-steroids in the urine of female Asian elephants, Elephas maximus, and their dependence on ovarian activity
    M Dehnhard
    Institute for Zoo Biology and Wildlife Research, PF 601103, D 10252 Berlin, Germany
    Reproduction 121:475-84. 2001
  4. ncbi Non-invasive monitoring of hormones: a tool to improve reproduction in captive breeding of the Eurasian lynx
    M Dehnhard
    Leibniz Institute for Zoo Biology and Wildlife Research, Berlin, Germany
    Reprod Domest Anim 43:74-82. 2008
  5. ncbi Characterisation of the sympathetic nervous system of Asian (Elephas maximus) and African (Loxodonta africana) elephants based on urinary catecholamine analyses
    M Dehnhard
    Leibniz Institut für Zoo und Wildtierforschung, PF 601103, D 10252 Berlin, Germany
    Gen Comp Endocrinol 151:274-84. 2007
  6. ncbi Comparative metabolism of gestagens and estrogens in the four lynx species, the Eurasian (Lynx lynx), the Iberian (L. pardinus), the Canada lynx (L. canadensis) and the bobcat (L. rufus)
    M Dehnhard
    Leibniz Institute for Zoo Biology and Wildlife Research, PF 601103, D 10252 Berlin, Germany
    Gen Comp Endocrinol 167:287-96. 2010
  7. ncbi Comparative endocrine investigations in three bear species based on urinary steroid metabolites and volatiles
    M Dehnhard
    Institute for Zoo and Wildlife Research, PF 601103, D 10252 Berlin, Germany
    Theriogenology 66:1755-61. 2006
  8. ncbi Measurement of plasma corticosterone and fecal glucocorticoid metabolites in the chicken (Gallus domesticus), the great cormorant (Phalacrocorax carbo), and the goshawk (Accipiter gentilis)
    M Dehnhard
    Institute of Zoo Biology and Wildlife Research, Alfred Kowalke Str 17, D 10315 Berlin, Germany
    Gen Comp Endocrinol 131:345-52. 2003
  9. ncbi Headspace solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS) for the determination of 5alpha-androst-2-en-17-one and -17beta-ol in the female Asian elephant: application for reproductive monitoring and prediction of partur
    M Dehnhard
    Institute for Zoo Biology and Wildlife Research, PF 601103, D 10252 Berlin, Germany
    J Steroid Biochem Mol Biol 84:383-91. 2003
  10. ncbi Application of an enzyme-immunoassay (EIA) for rapid screening of 5 alpha-pregnane-3,20-dione (DHP) in blood plasma of the Asian elephant, Elephas maximus
    M Dehnhard
    Institute for Zoo Biology and Wildlife Research, Berlin, Germany
    Berl Munch Tierarztl Wochenschr 114:161-5. 2001

Detail Information

Publications18

  1. ncbi Noninvasive monitoring of adrenocortical activity in roe deer (Capreolus capreolus) by measurement of fecal cortisol metabolites
    M Dehnhard
    , Berlin, Germany
    Gen Comp Endocrinol 123:111-20. 2001
    ..Therefore, LATs should be further investigated for their effectiveness in reducing stress responses in zoo and wild animals, e.g., when translocations are necessary...
  2. ncbi Using PGFM (13,14-dihydro-15-keto-prostaglandin F2α) as a non-invasive pregnancy marker for felids
    M Dehnhard
    Leibniz Institute for Zoo and Wildlife Research, PF 601103, D 10252 Berlin, Germany
    Theriogenology 77:1088-99. 2012
    ..Altogether, PGFM as tool for pregnancy diagnosis has been proven to be useful in breeding management of felids...
  3. ncbi Demonstration of 2-unsaturated C19-steroids in the urine of female Asian elephants, Elephas maximus, and their dependence on ovarian activity
    M Dehnhard
    Institute for Zoo Biology and Wildlife Research, PF 601103, D 10252 Berlin, Germany
    Reproduction 121:475-84. 2001
    ..The measurement of both volatile substances in elephant urine can be used for rapid detection of the stage of the ovarian cycle, as the analysis can be completed within 2 h...
  4. ncbi Non-invasive monitoring of hormones: a tool to improve reproduction in captive breeding of the Eurasian lynx
    M Dehnhard
    Leibniz Institute for Zoo Biology and Wildlife Research, Berlin, Germany
    Reprod Domest Anim 43:74-82. 2008
    ....
  5. ncbi Characterisation of the sympathetic nervous system of Asian (Elephas maximus) and African (Loxodonta africana) elephants based on urinary catecholamine analyses
    M Dehnhard
    Leibniz Institut für Zoo und Wildtierforschung, PF 601103, D 10252 Berlin, Germany
    Gen Comp Endocrinol 151:274-84. 2007
    ..This increase might indicate a role of dopamine in the ovulatory mechanisms. These results suggest that changes in urinary catecholamine excretion reflect fluctuations in sympathoadrenal activity and may be a useful indicator of stress...
  6. ncbi Comparative metabolism of gestagens and estrogens in the four lynx species, the Eurasian (Lynx lynx), the Iberian (L. pardinus), the Canada lynx (L. canadensis) and the bobcat (L. rufus)
    M Dehnhard
    Leibniz Institute for Zoo Biology and Wildlife Research, PF 601103, D 10252 Berlin, Germany
    Gen Comp Endocrinol 167:287-96. 2010
    ..We assume that these differences may reflect changes in liver metabolism and/or qualitative and quantitative variations in gut bacteria composition, resulting in differences in faecal metabolite composition...
  7. ncbi Comparative endocrine investigations in three bear species based on urinary steroid metabolites and volatiles
    M Dehnhard
    Institute for Zoo and Wildlife Research, PF 601103, D 10252 Berlin, Germany
    Theriogenology 66:1755-61. 2006
    ..These fatty acids were also detected in the Brown during estrus and Spectacled bear. Further studies on the behavioral relevance of these fatty acids are required to determine if they are pheromones...
  8. ncbi Measurement of plasma corticosterone and fecal glucocorticoid metabolites in the chicken (Gallus domesticus), the great cormorant (Phalacrocorax carbo), and the goshawk (Accipiter gentilis)
    M Dehnhard
    Institute of Zoo Biology and Wildlife Research, Alfred Kowalke Str 17, D 10315 Berlin, Germany
    Gen Comp Endocrinol 131:345-52. 2003
    ..Therefore, non-invasive measurements of fecal metabolites are a promising perspective to monitor stress in birds...
  9. ncbi Headspace solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS) for the determination of 5alpha-androst-2-en-17-one and -17beta-ol in the female Asian elephant: application for reproductive monitoring and prediction of partur
    M Dehnhard
    Institute for Zoo Biology and Wildlife Research, PF 601103, D 10252 Berlin, Germany
    J Steroid Biochem Mol Biol 84:383-91. 2003
    ..Experiments revealed that 5alpha-androst-3alpha-ol-17-one and probably 5alpha-androst-3alpha-ol-17beta-ol are generated from sulfate conjugates by a thermal process...
  10. ncbi Application of an enzyme-immunoassay (EIA) for rapid screening of 5 alpha-pregnane-3,20-dione (DHP) in blood plasma of the Asian elephant, Elephas maximus
    M Dehnhard
    Institute for Zoo Biology and Wildlife Research, Berlin, Germany
    Berl Munch Tierarztl Wochenschr 114:161-5. 2001
    ..We propose the direct DHP-EIA as a suitable method for reproductive monitoring in elephants, as it can be easily established in laboratories...
  11. ncbi Non cat-like ovarian cycle in the Eurasian and the Iberian lynx - ultrasonographical and endocrinological analysis
    F Goritz
    Department for Reproduction Management, Leibniz Institute for Zoo and Wildlife Research IZW, Berlin, Germany
    Reprod Domest Anim 44:87-91. 2009
    ..26 ng/ml in Iberian lynx, respectively. The ultrasonographical findings on the ovarian structures suggest strongly that corpora lutea developed after ovulation stay active until November and regress before the onset of the next oestrus...
  12. ncbi PGFM (13,14-dihydro-15-keto-PGF(2alpha)) in pregnant and pseudo-pregnant Iberian lynx: a new noninvasive pregnancy marker for felid species
    C Finkenwirth
    Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
    Theriogenology 73:530-40. 2010
    ..High PGFM levels in urine or fecal samples may allow a pregnancy diagnosis without knowledge of mating time, making the PGFM test applicable to free-ranging animals...
  13. ncbi Pregnancy diagnosis in urine of Iberian lynx (Lynx pardinus)
    B C Braun
    Leibniz Institute for Zoo and Wildlife Research, PF601103, D 10252 Berlin, Germany
    Theriogenology 71:754-61. 2009
    ..A positive relaxin test indicates an ongoing pregnancy, whereas negative tests must be judged carefully as hormone concentrations might be below detection thresholds...
  14. ncbi Seasonal profiles of ovarian activity in Iberian lynx (Lynx pardinus) based on urinary hormone metabolite analyses
    K Jewgenow
    Department for Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research IZW, Berlin, Germany
    Reprod Domest Anim 44:92-7. 2009
    ..Thus, seasonal luteal activity in Iberian lynx can be monitored by urinary oestrogens. The increase of urinary oestradiol during late pregnancy might indicate an oestradiol secretion by the lynx placenta...
  15. ncbi Gonadal activity in male and female captive fossas (Cryptoprocta ferox) during the mating season
    B R Vogler
    Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
    Reprod Domest Anim 44:98-102. 2009
    ..The elevated 5alpha-pregnan-3beta-ol-20-one levels in pregnant animals allows for the characterization of pregnancy in the fossa based on analysis of faecal steroid metabolite concentrations...
  16. ncbi Monitoring testicular activity of male Eurasian (Lynx lynx) and Iberian (Lynx pardinus) lynx by fecal testosterone metabolite measurement
    K Jewgenow
    Leibniz Institute for Zoo Biology and Wildlife Research, PF 601103, Berlin, Germany
    Gen Comp Endocrinol 149:151-8. 2006
    ..Preliminary results on testosterone measurements in Iberian lynx feces confirmed the suitability of the applied Immulite test in this highly endangered species...
  17. ncbi Embryo retrieval after hormonal treatment to control ovarian function and non-surgical artificial insemination in African lions (Panthera leo)
    F Goeritz
    Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
    Reprod Domest Anim 47:156-60. 2012
    ..African lions may serve as a valuable model to develop assisted reproduction for propagation of relic zoo populations in the critically endangered Asian lion or Barbary lion...
  18. ncbi Life cycle of feline Corpora lutea: histological and intraluteal hormone analysis
    K Jewgenow
    Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
    Reprod Domest Anim 47:25-9. 2012
    ..Luteal regression is steadily progressive; the first signs (coarsed vacuolization, increased proportion of non-steroidogenic cells) are visible already in CL from the second trimester of pregnancy...