Identification of cryptorchidism in horses by analysing urine samples with gas chromatography/mass spectrometry.
Abstract: Currently there are two common radioimmunoassay-based methods for the detection of equine cryptorchidism; one measures testosterone concentrations in peripheral blood samples taken before and after an intravenous injection of human chorionic gonadotrophin (hCG) and the other measures plasma estrone sulfate. However, each of these invasive methods has its own shortfalls and neither gives unequivocal results. In this article a highly reliable gas chromatography/mass spectrometry (GC/MS) method is described based on the analysis of urine samples for the identification of cryptorchidism in horses, some as young as 2 years old.
2009 Elsevier Ltd. All rights reserved.
Publication Date: 2009-11-14 PubMed ID: 19914849DOI: 10.1016/j.tvjl.2009.10.010Google Scholar: Lookup
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Summary
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This research discusses a new method for detecting cryptorchidism in horses using gas chromatography/mass spectrometry (GC/MS) analysis of urine samples, as an alternative to the existing invasive techniques that have various shortcomings and do not always give clear results.
Background of the Study
- The research revolves around the detection of equine cryptorchidism, which is an abnormality in horses where one or both testes do not descend into the scrotum.
- Two popular methods have been used for this detection so far, both of which are invasive and do not give unequivocal results. The first method monitors testosterone levels in the horse’s peripheral blood before and after injecting human chorionic gonadotrophin (hCG). The other method measures plasma estrone sulfate levels.
- Both tests have their limitations, and the researchers argue that there is a need for a more reliable and non-invasive method.
Methodology and Findings
- The researchers reveal a novel method for identifying cryptorchidism in horses by analyzing urine samples with designed GC/MS method. This technique is both highly reliable and non-invasive.
- The new method is capable of identifying cryptorchidism even in horses as young as 2 years old. This is beneficial as early detection can lead to more treatment options and a better prognosis.
- Gas chromatography/mass spectrometry is a method used to identify different substances within a test sample. The researchers propose this method as an optimal way to analyze horse urine samples for the purpose of identifying cryptorchidism.
Significance and Implications
- The new method, if widely adopted, could significantly improve the process of identifying cryptorchidism in horses with less invasion and more accuracy.
- Horse owners, veterinary practitioners and even stud farms can greatly benefit from this research. The clear results and non-invasive nature of the test would reduce the stress levels in horses and make the procedure much less arduous and worrying.
- Not only does this method have the potential to enhance current detection methods, but researchers believe that it could lead to further methods of early detection and solutions within the field of equine medicine.
Cite This Article
APA
Leung DK, Tang FP, Wan TS, Wong JK.
(2009).
Identification of cryptorchidism in horses by analysing urine samples with gas chromatography/mass spectrometry.
Vet J, 187(1), 60-64.
https://doi.org/10.1016/j.tvjl.2009.10.010 Publication
Researcher Affiliations
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China.
MeSH Terms
- Animals
- Cryptorchidism / diagnosis
- Cryptorchidism / urine
- Cryptorchidism / veterinary
- Gas Chromatography-Mass Spectrometry / veterinary
- Horse Diseases / diagnosis
- Horse Diseases / urine
- Horses
- Male
- Steroids / urine
- Urinalysis / veterinary
Citations
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