Comparative Analysis of Iodine Levels, Biochemical Responses, and Thyroid Gene Expression in Rats Fed Diets with Kale Biofortified with 5,7-Diiodo-8-Quinolinol.
Study Goal
The researchers aimed to evaluate the effects of iodine-biofortified curly kale on iodine content, tissue iodine levels, and biochemical parameters in laboratory rats, as well as its potential to address iodine deficiency.
Results Summary
Diets with iodine-biofortified kale significantly increased iodine levels in tissues (especially liver and kidneys), improved lipid profiles (lower TC and TG), enhanced liver function markers, reduced oxidative stress, and modulated thyroid-related gene expression.
Population
Laboratory rats
Effective Dosage
Biofortified kale enriched with 5,7-diiodo-8-quinolinol (exact dosage not specified)
Duration
Not specified
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
diets with 5,7-diiodo-8-quinolinol biofortified kale | increase | iodine levels | laboratory rats | - | showed significantly higher | #1 |
diets with biofortified curly kale | increase | iodine concentrations in the liver and kidneys | rats | - | revealed the highest | #2 |
biofortified kale diet | decrease | total cholesterol (TC) and triglyceride (TG) levels | rats | - | had lower | #3 |
biofortified diet | increase | liver function markers (ALAT, ASAT) | rats | - | improved | #4 |
biofortified diet | decrease | oxidative stress markers (TBARS) | rats | - | reduced | #5 |
diets containing biofortified kale | neutral | expression of thyroid-related genes (Slc5A5, Tpo, Dio1, Dio2) | - | - | demonstrated significant changes in | #6 |
diet with biofortified curly kale | decrease | uric acid levels | rats | - | observed variations in, with lower concentrations | #7 |
Biofortified curly kale | increase | thyroid function | - | - | supports | #8 |
Biofortified curly kale | increase | liver and kidney health | - | - | improves | #9 |
biofortified curly kale | increase | dietary iodine intake | - | - | can effectively increase | #10 |
Iodine is a key micronutrient essential for the synthesis of thyroid hormone, which regulates metabolic processes and maintains overall health. Despite its importance, iodine deficiency is a global health issue, leading to disorders such as goiter, hypothyroidism, and developmental abnormalities. Biofortification of crops with iodine is a promising strategy to enhance the dietary iodine intake, providing an alternative to iodized salt. Curly kale (Brassica oleracea var. sabellica) is a nutrient-rich vegetable high in vitamins A, C, K; minerals; fiber; and bioactive compounds with antioxidant, anti-inflammatory, and detoxifying properties. This study evaluates the effects of diets containing iodine-biofortified curly kale ('Oldenbor F1' and 'Redbor F1') on iodine content, tissue iodine levels, and various biochemical parameters in laboratory rats. The biofortified curly kale was enriched with 5,7-diiodo-8-quinolinol. The iodine content in the AIN-93G (control) diet and the non-biofortified curly kale diets did not differ significantly. However, diets with 5,7-diiodo-8-quinolinol biofortified kale showed significantly higher iodine levels compared with the control diets. Tissue analysis revealed the highest iodine concentrations in the liver and kidneys of rats fed diets with biofortified curly kale, indicating better iodine bioavailability. Biochemical analysis showed that rats fed the biofortified kale diet had lower total cholesterol (TC) and triglyceride (TG) levels compared with rats fed the control diet. Additionally, the biofortified diet improved the liver function markers (ALAT, ASAT) and reduced oxidative stress markers (TBARS). The study also investigated the expression of thyroid-related genes (Slc5A5, Tpo, Dio1, Dio2) in response to diets containing biofortified kale. The results demonstrated significant changes in gene expression, indicating adaptive mechanisms to dietary iodine levels and the presence of bioactive compounds in the biofortified kale. The study also observed variations in uric acid levels, with lower concentrations in rats fed a diet with biofortified curly kale. Biofortified curly kale supports thyroid function and improves liver and kidney health by reducing oxidative stress and modulating key biochemical and genetic markers. These findings suggest that biofortified curly kale can effectively increase dietary iodine intake as a nutritional intervention to address iodine deficiency and promote overall health.