Blood steroid concentrations in domestic Mongolian horses.
Abstract: Traditionally, analysis of blood cortisol alone has been used to evaluate adrenal function. Currently, multisteroid analyses are considered more informative than analysis of a single hormone to assess adrenal function. The objective of the present research was to create a database for steroid reference values for domestic Mongolian horses. Seven adrenal steroid levels were determined in the blood of 18 colts, 34 stallions, 25 geldings, 17 fillies, and 29 mares. Results were as follows (lowest and highest group median, in nanograms per milliliter): progesterone: <0.030 (fillies), 4.30 (mares), and 0.070 (all horses); 17-OH-progesterone: 0.070 (colts), 0.520 (mares), and 0.110 (all horses); androstenedione: 0.101 (colts), 0.256 (stallions), and 0.181 (all horses); testosterone: <0.040 (mares, stallions, and fillies), 0.040 (geldings and colts), and <0.40 (all horses); estradiol: 0.066 (stallions), 0.093 (fillies), and 0.085 (all horses); cortisol: 23.040 (colts), 70.210 (geldings), and 50.770 (all horses); and aldosterone: 0.018 (colts), 0.297 (geldings), and 0.191 (all horses). Overall medians indicate that cortisol (98.70%) is the predominant steroid, followed by aldosterone (0.37%), androstenedione (0.35%), 17-OH-progesterone (0.21%), estradiol (0.17%), progesterone (0.14%), and testosterone (0.06%). This information provides adrenal and gonadal steroid reference concentrations to assist in physiological characterization and diagnosis of endocrine disorders in domestic Mongolian horses.
Publication Date: 2010-07-14 PubMed ID: 20622223DOI: 10.1177/104063871002200407Google Scholar: Lookup
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- Journal Article
Summary
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The research article is focused on establishing a database containing reference values for seven different adrenal steroids for domestic Mongolian horses. The aim of the study was to enhance the physiological characterization and diagnosis of endocrine disorders in these horses.
Objective of the Research
- The main goal of this study was to compile a reliable database for steroid reference values for domestic Mongolian horses that would help in better understanding of their physiology and diagnosing endocrine disorders.
Research Methodology
- The study measured the levels of seven different adrenal steroids – progesterone, 17-OH-progesterone, androstenedione, testosterone, estradiol, cortisol, and aldosterone – in the blood of different groups of horses. These groups included 18 colts, 34 stallions, 25 geldings, 17 fillies, and 29 mares.
Results
- The research found varying concentrations of these steroids in different groups of horses. For example, lowest and highest group median levels for cortisol were found to be 23.040 nanograms per milliliter in colts and 70.210 nanograms per milliliter in geldings.
- When looking at overall medians, the study found that cortisol was the predominant steroid, constituting 98.70% of the total. Aldosterone, androstenedione, 17-OH-progesterone, estradiol, progesterone, and testosterone were found in much lower concentrations.
Significance of the Research
- This study is significant because it provides in-depth and comprehensive information about the normal levels of seven adrenal steroid hormones in domestic Mongolian horses. This information will be crucial in assessing adrenal function and diagnosing endocrine disorders in these animals.
Cite This Article
APA
Haffner JC, Fecteau KA, Eiler H, Tserendorj T, Hoffman RM, Oliver JW.
(2010).
Blood steroid concentrations in domestic Mongolian horses.
J Vet Diagn Invest, 22(4), 537-543.
https://doi.org/10.1177/104063871002200407 Publication
Researcher Affiliations
- Department of Agribusiness and Agriscience, Horse Science Center, Middle Tennessee State University, Murfreesboro, TN, USA.
MeSH Terms
- Adrenal Glands / physiology
- Animals
- Female
- Horses / blood
- Male
- Mongolia
- Steroids / blood
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