Effect of thyroid hormones on activity dynamics of enzymes of intestinal mucosa of juvenile roach Rutilus rutilus
- 46 Downloads
The effect of thyroid hormones on activity dynamics of enzymes (proteinases and glycosidases) of intestinal mucosa of juvenile roach Rutilius rutilus was investigated. Application of substances increasing and decreasing the level of thyroid hormones in blood plasma significantly influences the growth rate and the activity of proteinases and glycosidases functioning in the intestinal mucosa. In most cases, the activity level of trypsin-like proteinases and the activity of glycosidases in the fish exposed to triiodothyronine were significantly higher than in the control. The activity level of chymotrypsin-like proteinases in fish form the group with exposure of exogenous triiodothyronine only in the end of the experiment surpassed the values of this parameter in the control fish. In the fish developing at deficiency of thyroid hormones, the growth rate and proteinases activity were significantly lower in comparison with the control.
Key wordsthyroid hormones digestive enzymes proteinases glycosidases intestine dynamics of enzymatic activity roach
Unable to display preview. Download preview PDF.
- 4.N. P. Chernysheva, Hormones in Animals. Introduction into Physiological Endocrinology (Glagol’, St. Petersburg, 1995) [in Russian].Google Scholar
- 10.B. A. Levin and M. A. Levina, “On Changes in the Number of Scales in the Lateral Line in Siblings of Roach Rutilus rutilus (Ostariophysi, Cyprinidae) during Development at Different Rates of Ontogenesis,” in Materials of the Conference of Young Scientists and PhD Students of the Institute of Ecology and Evolution on Current Problems of Ecology and Evolution (KMK, Moscow, 2008), pp. 214–220.Google Scholar
- 12.N. de Pedro, M. J. Delgado, B. Gancedo, and M. Alonso-Bedate, “Changes in Glucose, Glycogen, Thyroid Activity and Hypothalamic Catecholamines in Tench by Starvation and Refeeding,” Comp. Physiol. Biochem. 173, 475–481 (2003).Google Scholar
- 13.G. E. Pickford and J. W. Atz, The Physiology of the Pituitary Gland of Fishes (N.Y. Zool. Soc., New York, 1957).Google Scholar
- 14.D. M. Power, L. Llewellyn, M. Faustino, et al., “Thyroid Hormones in Growth and Development of Fish,” Comp. Biochem. Physiol. 130 C, 447–459 (2001).Google Scholar
- 19.S. V. Smirnov and B. A. Levin, “Reduction of the Number of Serial Elements at the Acceleration of Ontogenesis in African Barbel Barbus intermedius: A New Type of Pedomorphosis,” Dokl. Akad. Nauk 413(3), 427–429 (2007).Google Scholar
- 20.S. V. Smirnov, K. F. Dzerzhinskii, and B. A. Levin, “On the Relationship between Scale Number in the Lateral Line in the African Barbel Barbus intermedius and the Rate of Ontogeny (by Experimental Data),” Vopr. Ikhtiol. 46(1), 134–138 (2006) [J. Ichthyol. 46 (1), 129–132 (2006)].Google Scholar
- 22.A. M. Ugolev and N. N. Iezuitova, “Determination of Activity of Invertase and Other Disaccharidases,” in Study of the Digestive Apparatus in Humans. Review of Modern Methods (Nauka, Leningrad, 1969), p. 169.Google Scholar
- 23.A. M. Ugolev and V. V. Kuz’mina, Digestive Processes and Adaptations in Fish (Gidrometeoizdat, St. Petersburg, 1993) [in Russian].Google Scholar
- 24.A. White, Ph. Handler, E. Smith, et al., Principles of Biochemistry (McGraw-Hill, New York, 1978).Google Scholar