1996
DOI: 10.1111/j.1439-0396.1996.tb00492.x
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Zinc deficiency and the concentrations of thyroid hormones in serum of force‐red rats

Abstract: Zusammenfassung Zinkmangel und die Konzentrationen der Schilddrüsenhormone im Serum zwangsernährter Ratten Die vorliegende Untersuchung hatte zum Ziel, den Einfluß von Zinkmangel auf den Stoffwechsel der Schilddrüsenhormone zu untersuchen. Dazu wurden zwei Versuche mit wachsenden männlichen Sprague‐Dawley‐Ratten durchgeführt. Um die Effekte einer zinkmangelbedingten verminderten Futteraufnahme auszuschalten, erhielten alle Tiere in beiden Versuchen mit Hilfe einer Schlund‐sondenfütterung eine energetische ange… Show more

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Cited by 3 publications
(2 citation statements)
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“…Serum Zn con centrations in the present study are in agree ment with the observations of other workers [9,11,12] who have also reported reduction in serum Zn concentrations in ZnD guineapigs. Growth retardation due to Zn deficiency in guinea-pigs as observed in the present study has also been reported in other species of animals [14], This might be due to impair ment of DNA synthesis since during Zn defi ciency the enzymes (thymidine kinase and DNA polymerase) and a hormone, somato medin C, required for DNA synthesis have been reported to be decreased [14,15], Sec ondly, hypothyroidism might have also con tributed to growth retardation [14], Lower values of serum T3 and T4 observed in ZnD guinea-pigs of the present study have also been found to be associated with Zn defi ciency in rats [2,3,5,16,17] and human beings [ 18]. Alteration in thyroid hormones as suggested by Morley et al [ 1 ] and Fujimoto et al [3] might partly be secondary to deficiency of vitamin A [19] which has been reported to be required for extrathyroidal conversion of T4 to T;, in the liver.…”
Section: Zinc Deficiency and Thyroidmentioning
confidence: 56%
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“…Serum Zn con centrations in the present study are in agree ment with the observations of other workers [9,11,12] who have also reported reduction in serum Zn concentrations in ZnD guineapigs. Growth retardation due to Zn deficiency in guinea-pigs as observed in the present study has also been reported in other species of animals [14], This might be due to impair ment of DNA synthesis since during Zn defi ciency the enzymes (thymidine kinase and DNA polymerase) and a hormone, somato medin C, required for DNA synthesis have been reported to be decreased [14,15], Sec ondly, hypothyroidism might have also con tributed to growth retardation [14], Lower values of serum T3 and T4 observed in ZnD guinea-pigs of the present study have also been found to be associated with Zn defi ciency in rats [2,3,5,16,17] and human beings [ 18]. Alteration in thyroid hormones as suggested by Morley et al [ 1 ] and Fujimoto et al [3] might partly be secondary to deficiency of vitamin A [19] which has been reported to be required for extrathyroidal conversion of T4 to T;, in the liver.…”
Section: Zinc Deficiency and Thyroidmentioning
confidence: 56%
“…In human beings, its defi ciency in natural cases has been reported to influence thyroid status [ 1], but very little work has been done experimentally in guineapigs to prove its role in the functioning of thy roid gland. However, in rats some workers [2][3][4][5] have shown that Zn deficiency decreased serum concentrations of thyroid hormones without indicating any pathological changes in thyroid gland itself. Therefore, taking in view the paucity of the literature on the rela tionship of Zn with thyroid gland, the present work was undertaken in guinea-pigs to study the effect of experimental Zn deficiency on the pathology of thyroid gland and thyroid hormones.…”
Section: Introductionmentioning
confidence: 99%