| Autor: |
Pandita, Sujata, Bharath Kumar, B. S., Mohini, Madhu |
| Předmět: |
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| Zdroj: |
Biological Rhythm Research; Oct2016, Vol. 47 Issue 5, p815-821, 7p |
| Abstrakt: |
The aim of this study was to investigate the variations in plasma triiodothyronine (T3) and thyroxine (T4) with the advancement of age and to determine their circadian patterns in prepubertal and pubertal Murrah buffaloes. The variations in plasma T3and T4with the advancement of age were observed from day 1 to 24 months of age. Significant higher levels of T3and T4were observed after birth and a gradual decrease in their concentrations occurred until 15 days of age. The mean plasma T3and T4ranged between 1.26–3.79 and 60.7–166 ng/ml, respectively, during 1–30 days of age. During 1–24 months of age, the variations in plasma T3did not differ (p > 0.05) with the advancement of age, whereas significant (p < 0.0001) changes were observed in plasma T4. The circadian patterns of T3and T4were evaluated in prepubertal Murrah buffaloes (n = 8) aged between 14 and 16 months. The mean plasma T3and T4ranged between 1.04–1.85 and 43.0–76.1 ng/ml, respectively. Significant (p > 0.0001) changes in the secretory pattern of T3were observed, whereas the secretory pattern of T4did not differ significantly (p > 0.05). In addition, the circadian patterns of T3and T4in pubertal buffaloes (n = 4) aged between 28 and 30 months were observed and compared to that of prepubertal group (n = 4). The prepubertal group showed significant (p < 0.001) higher plasma T3concentrations over 24 h than the pubertal group. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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