Horst Claassen

Summary

Affiliation: Martin Luther University
Country: Germany

Publications

  1. doi Variations in brachial plexus with respect to concomitant accompanying aberrant arm arteries
    Horst Claassen
    Department of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Große Steinstraße 52, D 06097 Halle Saale, Germany Electronic address
    Ann Anat 208:40-48. 2016
  2. doi Variation in the hypothenar muscles and its impact on ulnar tunnel syndrome
    Horst Claassen
    Department of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Große Steinstraße 52, 06097, Halle Saale, Germany
    Surg Radiol Anat 35:893-9. 2013
  3. doi Impact of sex hormones, insulin, growth factors and peptides on cartilage health and disease
    Horst Claassen
    Institut fur Anatomie and Zellbiologie, Martin Luther Universitat Halle Wittenberg, Große Steinstraße 52, D 06097 Halle Saale, Germany
    Prog Histochem Cytochem 45:239-93. 2011
  4. pmc C-28/I2 and T/C-28a2 chondrocytes as well as human primary articular chondrocytes express sex hormone and insulin receptors--Useful cells in study of cartilage metabolism
    Horst Claassen
    Institut fur Anatomie und Zellbiologie, Martin Luther Universitat Halle Wittenberg, Große Steinstraße 52, D 06097 Halle Saale, Germany
    Ann Anat 193:23-9. 2011
  5. doi 17β-estradiol reduces expression of MMP-1, -3, and -13 in human primary articular chondrocytes from female patients cultured in a three dimensional alginate system
    Horst Claassen
    Institute of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Große Steinstraße 52, 06097, Halle Saale, Germany
    Cell Tissue Res 342:283-93. 2010
  6. doi Superficial arm arteries revisited: Brother and sister with absent radial pulse
    Horst Claassen
    Department of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, D 06097 Halle Saale, Germany
    Ann Anat 192:151-5. 2010
  7. doi The fate of chondrocytes during ageing of human thyroid cartilage
    Horst Claassen
    Institute of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Grosse Steinstrasse 52, 06097, Halle, Saale, Germany
    Histochem Cell Biol 131:605-14. 2009
  8. doi The phytoestrogens daidzein and genistein enhance the insulin-stimulated sulfate uptake in articular chondrocytes
    Horst Claassen
    Institute of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Grosse Steinstrasse 52, 06097, Halle, Saale, Germany
    Cell Tissue Res 333:71-9. 2008
  9. ncbi Large patent median arteries and their relation to the superficial palmar arch with respect to history, size consideration and clinic consequences
    Horst Claassen
    Institute of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Grosse Steinstrasse 52, 06097 Halle Saale, Germany
    Surg Radiol Anat 30:57-63. 2008
  10. ncbi Influence of 17beta-estradiol and insulin on type II collagen and protein synthesis of articular chondrocytes
    Horst Claassen
    Institute of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Grosse Steinstrasse 52, D 06097 Halle, Saale, Germany
    Bone 39:310-7. 2006

Detail Information

Publications21

  1. doi Variations in brachial plexus with respect to concomitant accompanying aberrant arm arteries
    Horst Claassen
    Department of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Große Steinstraße 52, D 06097 Halle Saale, Germany Electronic address
    Ann Anat 208:40-48. 2016
    ..Variations in the brachial plexus are the rule rather than the exception. This fact is of special interest for the anesthetist when planning axillary block of brachial plexus...
  2. doi Variation in the hypothenar muscles and its impact on ulnar tunnel syndrome
    Horst Claassen
    Department of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Große Steinstraße 52, 06097, Halle Saale, Germany
    Surg Radiol Anat 35:893-9. 2013
    ..In some rare cases, an aberrant hypothenar muscle can also evoke median nerve compression. ..
  3. doi Impact of sex hormones, insulin, growth factors and peptides on cartilage health and disease
    Horst Claassen
    Institut fur Anatomie and Zellbiologie, Martin Luther Universitat Halle Wittenberg, Große Steinstraße 52, D 06097 Halle Saale, Germany
    Prog Histochem Cytochem 45:239-93. 2011
    ..Both animal and human research data were considered. The results are presented in an information matrix that identifies what is known, with supporting references, and identifies areas for further investigation...
  4. pmc C-28/I2 and T/C-28a2 chondrocytes as well as human primary articular chondrocytes express sex hormone and insulin receptors--Useful cells in study of cartilage metabolism
    Horst Claassen
    Institut fur Anatomie und Zellbiologie, Martin Luther Universitat Halle Wittenberg, Große Steinstraße 52, D 06097 Halle Saale, Germany
    Ann Anat 193:23-9. 2011
    ..Our findings provide a reproducible model for investigating sex hormone and insulin receptors, which are present in low concentrations in articular chondrocytes, in the tissue-specific context of cartilage metabolism...
  5. doi 17β-estradiol reduces expression of MMP-1, -3, and -13 in human primary articular chondrocytes from female patients cultured in a three dimensional alginate system
    Horst Claassen
    Institute of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Große Steinstraße 52, 06097, Halle Saale, Germany
    Cell Tissue Res 342:283-93. 2010
    ..Downregulation of TIMP-2 by 17β-estradiol in male patients would not be articular cartilage protective...
  6. doi Superficial arm arteries revisited: Brother and sister with absent radial pulse
    Horst Claassen
    Department of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, D 06097 Halle Saale, Germany
    Ann Anat 192:151-5. 2010
    ..High origin of radial artery and superficial ulnar artery can be accompanied by additional variations concerning vessels, muscles or nerves which have to be considered in the context of invasive and surgical procedures...
  7. doi The fate of chondrocytes during ageing of human thyroid cartilage
    Horst Claassen
    Institute of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Grosse Steinstrasse 52, 06097, Halle, Saale, Germany
    Histochem Cell Biol 131:605-14. 2009
    ..A possible influence of sexual hormones on apoptotic death of thyroid cartilage cells requires further elucidation...
  8. doi The phytoestrogens daidzein and genistein enhance the insulin-stimulated sulfate uptake in articular chondrocytes
    Horst Claassen
    Institute of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Grosse Steinstrasse 52, 06097, Halle, Saale, Germany
    Cell Tissue Res 333:71-9. 2008
    ..In view of the risks of long-term estrogen replacement therapy, further experiments should clarify the potential benefit of phytoestrogens and insulin in articular cartilage metabolism...
  9. ncbi Large patent median arteries and their relation to the superficial palmar arch with respect to history, size consideration and clinic consequences
    Horst Claassen
    Institute of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Grosse Steinstrasse 52, 06097 Halle Saale, Germany
    Surg Radiol Anat 30:57-63. 2008
    ..A large patent median artery can be involved in several clinical disorders like carpal tunnel syndrome, anterior interosseous nerve syndrome and pronator syndrome...
  10. ncbi Influence of 17beta-estradiol and insulin on type II collagen and protein synthesis of articular chondrocytes
    Horst Claassen
    Institute of Anatomy and Cell Biology, Martin Luther University of Halle Wittenberg, Grosse Steinstrasse 52, D 06097 Halle, Saale, Germany
    Bone 39:310-7. 2006
    ..Because the articular cartilage of diabetic patients is biomechanically less stable, further experiments are needed to clarify the role of estradiol and insulin in the metabolism of articular chondrocytes...
  11. ncbi Extracellular matrix changes in knee joint cartilage following bone-active drug treatment
    Horst Claassen
    Institut für Anatomie und Zellbiologie der Martin Luther Universität Halle Wittenberg, Grosse Steinstrasse 52, 06097, Halle, Germany
    Cell Tissue Res 324:279-89. 2006
    ..Thus, ovariectomy and long-term glucocorticoid therapy, especially when combined with sodium fluoride, have detrimental effects on this tissue...
  12. ncbi Androgen receptors and gender-specific distribution of alkaline phosphatase in human thyroid cartilage
    Horst Claassen
    Department of Anatomy and Cell Biology, Martin Luther University Halle Wittenberg, Grosse Steinstrasse 52, 06097, Halle, Germany
    Histochem Cell Biol 126:381-8. 2006
    ..Our results suggest the involvement of androgen receptor positive chondrocytes in thyroid cartilage mineralization, probably by a testosterone-linked stimulation of alkaline phosphatase...
  13. ncbi Variations of the A. axillaris and the crural arteries in the same human individual--multiple repetitions of the mammalian plesiomorphic constellation of the arteries
    Horst Claassen
    Institut fur Anatomie und Zellbiologie, Martin Luther Universitat Halle Wittenberg, Germany
    Ann Anat 188:39-48. 2006
    ..tibialis anterior supplied the Dorsum pedis and therefore represented the pattern normally seen in humans. However, in the left leg there also was a rudimentary A. tibialis posterior along with a prominent A. peronea...
  14. ncbi Estradiol protects cultured articular chondrocytes from oxygen-radical-induced damage
    Horst Claassen
    Institut für Anatomie und Zellbiologie der Martin Luther Universität Halle Wittenberg, Grosse Steinstrasse 52, 06097, Halle, Germany
    Cell Tissue Res 319:439-45. 2005
    ..Decreased estradiol levels may therefore contribute to menopausal OA in the long term...
  15. ncbi The Etruscan skulls of the Rostock anatomical collection--how do they compare with the skeletal findings of the first thousand years B. C.?
    Horst Claassen
    Institut fur Anatomie, Universitat Rostock, Gertrudenstrasse 9, D 18055 Rostock, Germany
    Ann Anat 186:157-63. 2004
    ..Due to the similarities of the Etruscan skulls with some Celtic skulls from South Bavaria and Austria, it seems more likely that the Etruscans were original inhabitants of Etruria than immigrants...
  16. doi Trefoil factor 3 is induced during degenerative and inflammatory joint disease, activates matrix metalloproteinases, and enhances apoptosis of articular cartilage chondrocytes
    Sophie Rösler
    Martin Luther University Halle Wittenberg, Halle Saale, Germany
    Arthritis Rheum 62:815-25. 2010
    ..Since cartilage and cornea have similar matrix properties, we undertook the present study to investigate whether TFF3 could induce anabolic functions in diseased articular cartilage...
  17. doi Special pattern of endochondral ossification in human laryngeal cartilages: X-ray and light-microscopic studies on thyroid cartilage
    Horst Claassen
    Department of Anatomy and Cell Biology, Martin Luther University Halle Wittenberg, Große Steinstraße 52, D 06097 Halle Saale, Germany Department of Anatomy, Christian Albrechts University Kiel, Olshausenstraße 40, D 24098 Kiel, Germany
    Clin Anat 27:423-30. 2014
    ..It is hypothesized that throughout life trabeculae of ossified thyroid cartilage undergo adaptation to different loads due to the use of voice...
  18. ncbi Topographical and histological examination of osteophytes taken from arthrotic femoral heads
    Horst Claassen
    Institut für Anatomie der Universität Rostock, Gertrudenstrasse 9, 18055 Rostock, Germany
    Ann Anat 185:67-71. 2003
    ..Secondly, despite local differences in osteophytic cartilage, the same types of glycosaminoglycans are synthesized as in normal cartilage at the margin of osteophytes...
  19. ncbi Isolated flexor muscles of the little toe in the feet of an individual with atrophied or lacking 4th head of the M. extensor digitorum brevis and lacking the 4th tendon of the M. extensor digitorum longus
    Horst Claassen
    Institut fur Anatomie, Universitat Rostock, Gertrudenstrasse 9, D 18055 Rostock
    Ann Anat 185:81-4. 2003
    ..flexor digitorum longus as is described in classic textbooks. In the individual's lifetime the described variation perhaps led to the possibility of an isolated flexion of the little toe...
  20. ncbi The effect of estrogens and dietary calcium deficiency on the extracellular matrix of articular cartilage in Göttingen miniature pigs
    Horst Claassen
    Anatomisches Institut der Universität Kiel, Germany
    Ann Anat 184:141-8. 2002
    ....
  21. pmc Gender-specific distribution of glycosaminoglycans during cartilage mineralization of human thyroid cartilage
    Horst Claassen
    Institut für Anatomie und Zellbiologie der Martin Luther Universität, Halle Wittenberg, Germany
    J Anat 205:371-80. 2004
    ....