Alterations in carbohydrate metabolism under cryptorchid condition in albino rats
Article Main
Abstract
Bilateral cryptorchidism was induced surgically in adult wistar strain albino rats and the carbohydrate metabolic pathway has been studied in testis, and sex accessory organs of both control and cryptorchid animals by estimating the marker enzymes and the substrates of the metabolism. In cryptorchid animal tissues, accumulation of lactic acid and glycogen was observed with inhibited phosphorylase activity in comparison to the controls. The reproductive tissues like testis, epididymis, prostate gland and seminal vesicles had shown remarkable elevation in the glycogen content, which can be attributed to decreased phosphorylase activity. In view of androgen dependent nature of phosphorylase its inhibition can be correlated to decreased testosterone circulation in the body. Consequently the free glucose content of the tissues was markedly decreased suggesting a decrease in the mobilization of the carbohydrates into energy metabolism. All the reproductive tissues had shown significant accumulation of lactic acid with inhibited oxidative enzyme activities. Thus the reproductive tissue oxidative metabolism had been suppressed during cryptorchidism leading to a shift towards glycolysis and creating a situation of functional suppression.
Article Details
Article Details
Cryptorchidism, Carbohydrates, Reproduction, Enzyme, Rat testis
Boujard, N., Hocheru, M.T., De Reviers, P., Kamtchouing, C., Perream and Cerreran, S. (1995). Evolution of somatic and germ cell populations affer buslfan treatment in utero or neonatal cryptorchidism in the rat. J. Andrologia. 27 (4). 223-228.
Bruns, F.H. and Bergmeyer, H.U. (1965). Fructose1, 6-diphosphate aldolase, In: Methods of enzymatic analysis. H.U. Bergmeyer (ed), Academic press, New York, 724.
Chinoy, N.J. and Sheth, K.M. (1977). Effects of CdCl2 on the secretory functions of sex accessory glands of rats. Ind. J. Exp. Biol.15:594-597.
Conglio, J.G., Grogan, W. M Jr. and Rahampy, R.K. (1975). Lipid and fatty acid composition of human testes removed at autopsy. Bio. Reprod., 12: 255-259.
Cori, G.T., Illingworth, B.B., and Keller, P.G. (1955). Muscle phosphorylase In: Methods in enzymology. S.P. Colowick and N.O. Kaplan (eds), Academic press. New York.. Vol-I, 200.
Delpio, A.G. and Raisman, R. (1978). C-AMP in spermatozoa taken from different segments of the rat epididymis. Experentia, 34(5): 670-671.
Ewing, L.L. and Van Demark, N.L. (1963). Factors affecting testicular metabolism and function. II. Effect of temperature elevation in vivo on subsequent metabolism activity of rabbit testicular tissue in vitro. J. Reprod. Fertil., 6: 9.
Ewing. L.l. and Schanbecher. L. M. (1970). Effects of experimental cryptorchidism on the activity of selected enzymes in rat testis. J of Endocrinology. 87, 129.
Farooqui, S.M., Al-Bagdadi, F. O., Donnel, J.M. and Stout, R. (1997). Degenerative changes in spermatogonia are associated with loss of glucose transporter (Glut 3) in abdominal tetis of
surgically induced unilateral cryptorchidism in rats. Biochem. Biophys. Res. Commun., 18: 236 (2); 407-12.
Free, M.J., Massive, E.D. and Van Demark, N.L. (1969). Glucose metabolism by the cryptorchid rat testis. J. Biol. Reprod., 1: 354.
Friedman, T.E. and Hangen, G.E. (1942). Pyruvic acid I. Collection of the blood for determination of lactic acid. J. Biol. Chem. 147: 67,
Hejmej, A. and Biliñska, B. (2008). The effects of cryptorchidism on the regulation of steroidogenesis and gap junctional communication in equine testes. Endokrynol Pol., 59(2):112-8.
Hilczer, M., Smyczyñska, J., Stawerska, R. and Lewiñski, A. (2008). Effects of one-year low-dose growth hormone (GH) therapy on body composition, lipid profile and carbohydrate metabolism in young adults with childhood-onset severe GH deficiency confirmed after completion of growth promotion. Endokrynol Pol., 59(4):292-300.
Huchabee (1961). Hawk’s physiological chemistry. 14th Edition. Tata Mc Graw –Hill publishing Co. Ltd., New Delhi, pp. 55-56.
Kemp, A. and Van Heijningen, M.K. (1954). A colorimetric micro method for the determination of glycogen in tissue. Bio. Chem. J., 56: 646.
Main, S.J. and. Waite, G.M.H. (1977). The blood testis barrier and temperature damage to the testis of rat. J. Reprod. Fertil.,51: 439-450.
Mancine, R.E., Penhos, J.C., Izquierdo, I.A. and Heinrich, J.J. (1960). Effects of acute hypoglycemia on rat testis. Proc. Soc. Exp. Biol. Med.,104: 699.
Means, A.P. and Hall, P.F. (1968). Protein biosynthesis in the testis: II Role of adenosine triphosphate (ATP) in stimulation by glucose. Endocrinology, 82: 86.
Mendel, B., Kemp, A. and Myers, D.K. (1954). A colorimetric micro method for the determination of glucose. Biochem. J.56: 639.
Seilicovich, A. and Lloret, A.P.(1973). Glycogen and related enzymes in normal and cryptorchid human testis: A cytochemical study. J. Reprod. Fertil., 33: 379.
Wang, Z.Q., Wetanabe, Y., Toki, A. and Itano, T. (2002). Altered distribution of sertoli cell vimentin and increased apoptosis in cryptorchid rats. J. Pedietrosury. 37 (4): 648-652.
Wu, N. and Murono, E.P. (1996). Temperature and germ cell regulation of leidig cell proliferation stimulated by sertolicell mitogenic factor, possible role in cryptorchidism. J. Andrologia, 28 (5): 247-257.
This work is licensed under Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) © Author (s)