Home
http://www.virbac.fr/ http://www.boehringer-ingelheim.com/ http://www.novartis.com/ http://www.animalhealth.bayerhealthcare.com/
vetcontact
Vetrinär
Tiermedizin
  WELCOME  
vetcontact
Vetrinär
Tiermedizin
  Home  
  Login / Newsletter  
vetcontact
Vetrinär
Tiermedizin
  CONTACTS  
vetcontact
Vetrinär
Tiermedizin
  Classifieds  
  New Products  
  VetCompanies  
  VetSchools  
vetcontact
Vetrinär
Tiermedizin
  PROFESSION  
vetcontact
Vetrinär
Tiermedizin
  Edutainment  
  VetAgenda  
  Presentations  
  Posters  
  ESAVS  
  Specialisation  
vetcontact
Vetrinär
Tiermedizin
  INSIGHT  
vetcontact
Vetrinär
Tiermedizin
  Congress News  
  Picture Galleries  
vetcontact
Vetrinär
Tiermedizin
  PRODUCTS  
vetcontact
Vetrinär
Tiermedizin
  Bayer  
  Boehringer Ing.  
  Novartis  
  Virbac

 
  Simply book for less...  
    

Bovine    Equine    Small Animal Practice    Swine Practice    Articles    Vetjournal    
deutsch english español polski francais
Home / WELCOME / Archiv / Small Animal Practice /     
 
Biochemical abnormalities in cartilage of dogs with OCD
OCD (osteochondrosis dissecans) is a common problem especially of young dogs of large or giant breeds. Which changes are characteristic for the affected cartilage? An American study group found a couple of them, most impressive is the significant lower glycosaminoglycan concentration and another collagen composition - reason or sequela of the OCD?

This study was performed to determine glycosaminoglycan (GAG) concentration and immunohistochemical staining characteristics of type-I, -II, and -X collagen from cartilage affected by osteochondritis dissecans (OCD) in dogs.

31 dogs with OCD and 11 clinically normal purpose-bred dogs were included.

Cartilage samples were evaluated microscopically, and GAG content was determined. Immunohistochemical staining was performed for type-I, -II, and -X collagen. Sections were subjectively evaluated for location and intensity of staining.

Results: Cartilage affected by OCD had a variety of pathologic changes and significantly lower GAG concentrations than did normal cartilage. Normal cartilage had no detectable type-I collagen.

For dogs < 9 months of age, cartilage affected by OCD had significantly more type-I collagen but significantly less type-X collagen than did control cartilage. For dogs > 12 months of age, cartilage affected by OCD contained significantly more type-I collagen than did control cartilage.

There was a significant negative correlation between immunoreactivity of type-I collagen and that of type-II and -X collagen.

A significant positive correlation was found between immunoreactivity of type-II and -X collagen.

Thus, cartilage affected by OCD contains less GAG, more type-I collagen, and less type-X collagen, compared with normal cartilage. A direct correlation between these changes and the etiopathogenesis of OCD was not established.


Source: Tomlinson JL, Cook JL, Kuroki K, Kreeger JM, Anderson MA. (2001): Biochemical characterization of cartilage affected by osteochondritis dissecans in the humeral head of dogs. In: Am J Vet Res. 2001 Jun;62(6):876-81.



Tell a friend   |   Print version   |   Send this article

SMALL ANIMAL PRACTICE

Electroretinography as a prognostic indicator after retinal reattachment surgery
Retinal detachment is one of the ophthalmological emergencies, and even if the diagnosis is made early and a reattachment surgery is performed immediately many dogs do not regain postoperative vision. This 18‐month prospective study recorded signalment, duration, cause, and extent of retinal detachment and pre‐operative vision status. Rod and mixed rod‐cone ERG responses were recorded prior to RRS. Referring veterinary ophthalmologists assessed vision 2 months postoperatively to determine whether pre‐operative electroretinography (ERG) predicts postoperative vision in dogs undergoing retinal reattachment surgery (RRS).

  • Computed tomographic lymphography for lymph node staging in dogs with malignant tumors members
  • Characterization of ocular melanosis-affected canine melanocytesmembers
  • Nasopharyngeal sialoceles in brachycephalic dogsmembers
  • Enterococcus faecium SF68 on serum cobalamin and folate concentrationsmembers
  • Gastrointestinal eosinophilic sclerosing fibroplasia limited to the mesentery in a catmembers
  • Ion acid-base disturbances and associated mortality in dogsmembers
  • First description of ultrasonic bone curette in canine otic surgerymembers
  • Staining hair samples with a modified Wright-Giemsa stain to diagnose feline dermatophytosismembers
  • Oral extended release hydrocodone as analgesia after TPLOmembers
  • 25OH vitamin D3 serum concentration in dogs with acute polyradiculoneuritismembers
  • Type 1 immune mediated polyarthritis in dogs and temporal relationship to vaccination members
  • Phosphorus and protein supply before diagnosis of chronic kidney disease members


  • [ Home ] [ About ] [ Contact / Request ][ Disclaimer ]

    Copyright © 2001-2016 VetContact GmbH
    All rights reserved