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Even though thyroxine causes a massive increase in the UCP1 protein in brown fat — over 30 times more — this does not significantly contribute to the overall rise in metabolism, meaning the hormone...
Giving mice thyroxine for three weeks raises their body temperature by 1–2°C, and even when placed in cold environments, they maintain this higher temperature — indicating their bodies are actively...
When mice are kept at a warm temperature, giving them thyroxine hormone significantly boosts their metabolic rate even if they lack a key protein (UCP1) normally involved in heat production, showing...
Fixing low iron with one IV treatment doesn’t fix memory or thinking problems in heart transplant patients, meaning other issues like medications or blood flow to the brain are likely more important...
Older heart transplant recipients may experience greater memory decline than expected for their age, but this trend was not strong enough to be certain in this study.
On average, heart transplant recipients score about half a standard deviation lower than healthy adults on tests of memory and executive function, suggesting a widespread, moderate level of cognitive...
Giving a single IV iron infusion to heart transplant patients with low iron does not improve their memory or thinking skills after six months compared to a placebo.
About one in four to nearly half of heart transplant recipients with low iron show measurable memory and thinking problems compared to healthy adults, even before any treatment is given.
In early pregnancy, total thyroid hormone levels (TT4) are similar regardless of iron status, because pregnancy naturally increases proteins that bind thyroid hormone, making TT4 an unreliable...
Pregnant women with iron deficiency anemia are more than twice as likely to have mild thyroid underactivity as women with normal iron levels, making it an important risk factor to screen for during...
The worse a pregnant woman’s iron deficiency is, the more likely her thyroid hormone levels are to be abnormal—those with full-blown anemia show the greatest thyroid disruption.
Pregnant women with severe iron deficiency anemia are more likely to have antibodies that attack the thyroid gland and show signs of mild thyroid underactivity than women with milder or no iron...
Pregnant women with severe iron deficiency anemia tend to have higher levels of thyroid-stimulating hormone and lower levels of active thyroid hormone than women with normal iron levels, indicating...
Scientists developed a reliable automated test using human DIO2 enzyme that can quickly screen tens of thousands of chemicals to find those that block this enzyme, with high accuracy and...
Eleven of the compounds tested, including the fungicide fluazinam, block all three thyroid hormone-activating enzymes equally, meaning they cannot be used to selectively control T3 levels in specific...
Ibrutinib, a cancer drug, blocks the DIO2 enzyme at low doses but starts killing cells at higher doses, making it less suitable than racecadotril for studying thyroid hormone effects without...
Racecadotril, a drug used for diarrhea, blocks the DIO2 enzyme more effectively and specifically than any other compound tested in this study, without harming cells, even at high doses, making it...
Six chemical compounds, including two approved medications, can block the human DIO2 enzyme in a test tube, reducing its ability to convert the thyroid hormone T4 into the active form T3, with some...
In early pregnancy, a woman’s iron levels are linked to her thyroid hormone levels, meaning that low iron early on may be associated with lower thyroid hormone production, which could affect fetal...
Iron deficiency becomes much more common during pregnancy, rising from about 6% in early pregnancy to nearly 40% by the third trimester, reflecting increased iron demands as the pregnancy advances.
In pregnant women with mild iodine deficiency, thyroid hormone levels remain largely unchanged, suggesting that iodine intake at this level does not significantly impair thyroid function during...
Pregnant women with lower hemoglobin levels tend to have lower levels of thyroid hormones, indicating that reduced blood oxygen capacity may be related to thyroid function, though it is unclear...
Pregnant women with low iron levels are more likely to have lower levels of thyroid hormones, particularly in early pregnancy, which may affect how the thyroid gland functions, though it is not...
When thyroxine is injected into the amniotic fluid, the fetus converts it into reverse T3 but not into the active thyroid hormone T3, indicating that the fetal system may not efficiently activate the...