The effect of thyroxine and triiodothyronine on glucose-6-phosphate and 6-phosphogluconate dehydrogenase activity in liver and fat body of the frog Rana esculenta

Kasprzyk, Anna; Obuchowicz, L.

doi:10.1016/0016-6480(80)90169-0

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…The same has been confirmed by the reverse physiological action in several thyroidectomised and thiouracil-treated animals. Similar observations were also made by Packard et al (1974), and Kasprazyk and Obuchowiez (1980) in frogs, Rana pipiens and R. esculenta, respectively. Thyroid hormone administration augmented the mitochondrial enzyme activity in the hepatic cells of A. testudineus (Peter and Oommen, 1988).…”

Section: Activitysupporting

confidence: 88%

Effect of Thyroxin on Acid Phosphatase, Catalase and Oxygen Uptake in Liver Tissue of a Teleost, <i>Anabas testudineus</i> (Cuv.)

Rath,

Mohanty,

Thomas

1996

joa

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Activities of acid phosphatase (orthophosphoric monoester phosphohydrolse, E. C. 3.1. 3.1), catalase (hydrogen peroxide: hydrogen peroxide oxidoreducuase, E. C. 1.11. 1.6) and oxygen uptake of hepatic tissue of Anabas testudineus in response to exogenous thyroxin hormone were studied. Fish exposed to exogenous thyroxine (Eltroxin) in water reduced the acid phosphatase activity, and enhanced the catalase activity and oxygen uptake ability significantly.

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Section: Activitysupporting

confidence: 88%

Effect of Thyroxin on Acid Phosphatase, Catalase and Oxygen Uptake in Liver Tissue of a Teleost, <i>Anabas testudineus</i> (Cuv.)

Rath,

Mohanty,

Thomas

1996

joa

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“…In teleosts, TH generally promote lipid depletion from depot sites [22,25] and favor the smoltification-associated lipid depletion pattern of coho salmon [24]. In anuran amphibians, TH tend to favor lipogenesis during their metamorphosis, particularly during premetamorphosis [8,14]. In birds, TH stimulate fatty acid synthesis in chick hepatocytes in vitro by enhancing activities of ACC, fatty acid synthase, and malic enzymes [6].…”

Section: Discussionmentioning

confidence: 99%

Study of the relationship between thyroid hormones and lipid metabolism during KClO4-induced metamorphosis of landlocked lamprey, Petromyzon marinus

Kao

Manzon

Sheridan

et al. 1999

Comparative Biochemistry and Physiology Part C: Pharmacology, T

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This study examines the role of thyroid hormones (TH) (thyroxine and triiodothyronine) in regulating lipid metabolism of landlocked larval sea lampreys, Petromyzon marinus. Larvae were treated with either thyroxine (0.5 or 1 mg l − 1 water) or triiodothyronine (0.25 or 1 mg l − 1 water) in the presence or absence of the goitrogen, potassium perchlorate (KClO 4 ) (0.05% w/v), for 4, 8, and 16 weeks. Treatment with KClO 4 alone, which induced metamorphosis after 8 weeks and lowered plasma TH levels, reduced hepatic and renal total lipid content after 8 weeks of treatment. KClO 4 -induced lipid depletion after the 8-week treatment was supported by an increased rate of hepatic lipolysis, as indicated by increased triacylglycerol lipase activity. Furthermore, reduced lipogenesis in the liver was indicated by decreased hepatic acetyl-CoA carboxylase and diacylglycerol acyltransferase (DGAT) activities, and by decreased renal DGAT activity following 8 weeks of KClO 4 treatment. Treatment of larvae for 4 weeks with TH alone resulted in either no change or a slight increase of lipid in the liver and kidney. TH treatments in combination with KClO 4 failed to induce metamorphosis and, after up to 8 weeks, several TH treatments blocked changes in lipid content and enzyme activity associated with KClO 4 -induced metamorphosis. These experimental results suggest that TH deficiency during metamorphosis may promote lipid catabolism, while the presence of TH tends to protect/promote lipid reserves, perhaps favoring the larval condition. The actions of TH and KClO 4 on metamorphosis-associated lipid metabolism in sea lampreys may be direct, permissive, and/or indirect via other factors.

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Corticosteroid receptors in liver cytosol of the clawed toad, Xenopus laevis: Influence of thyroid and ovarian hormones

Lange¹,

Hanke²,

Morishige

1989

General and Comparative Endocrinology

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The effect of thyroxine and triiodothyronine on glucose-6-phosphate and 6-phosphogluconate dehydrogenase activity in liver and fat body of the frog Rana esculenta

Cited by 4 publications

References 22 publications

Effect of Thyroxin on Acid Phosphatase, Catalase and Oxygen Uptake in Liver Tissue of a Teleost, <i>Anabas testudineus</i> (Cuv.)

Effect of Thyroxin on Acid Phosphatase, Catalase and Oxygen Uptake in Liver Tissue of a Teleost, <i>Anabas testudineus</i> (Cuv.)

Study of the relationship between thyroid hormones and lipid metabolism during KClO4-induced metamorphosis of landlocked lamprey, Petromyzon marinus

Corticosteroid receptors in liver cytosol of the clawed toad, Xenopus laevis: Influence of thyroid and ovarian hormones

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