Hypothyroidismand growth hormone deficiency The relationship between human growth hormone (HGH) and thyroid function, particularly hypothyroidism, is a complex one, with research yielding often conflicting results.作者:R Demura·1980·被引用次数:31—Clinically, most of them lacked symptoms and signs ofhypothyroidismand exhibited a good growth response tohGH. Plasma TSH response to TRH in these patients ... While HGH is crucial for growth and cellular repair, its administration, especially in cases of growth hormone deficiency (GHD), can influence the thyroid axis. This article aims to demystify this interaction, providing insights supported by scientific literature to address the question: does HGH help with hypothyroidism?
It's important to understand that HGH and thyroid hormones are integral parts of the endocrine system, and their functions are interconnected. Thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3), regulate metabolism, energy production, and are essential for normal growth and development. In individuals with hypothyroidism, the thyroid gland does not produce enough of these vital hormones.
Research has shown that growth hormone (GH) replacement can affect the metabolism of thyroid hormone. While some studies suggest GH treatment might lower levels of thyroxine (T4) and free thyroxine (FT4) in both adults and children with GHD, others report different outcomes.作者:JOL JøRGENSEN·1989·被引用次数:219—Administration of human GH to GH-deficient patients has yielded conflicting results concerning its impact onthyroidfunction, ranging from increased resti. For instance, one study indicated that recombinant human growth hormone (rhGH) therapy can significantly reduce the concentration of TT4 and FT4作者:M Losa·2008·被引用次数:65—Background: Clinical studies on the effect ofgrowth hormone(GH) onthyroidfunction in patients with GH deficiency are contradictory. Further, the majority of .... However, this effect is not universally observed, and some studies report that recombinant human growth hormone treatment at low doses does not significantly change thyroid function.
Conversely, there's evidence to suggest that GH therapy might even unmask underlying hypothyroidism. In individuals with GH deficiency, somatotrophic replacement can increase the conversion rate of the inactive form of the thyroid hormone (T4) to its active form. This process, along with other hormonal shifts, can sometimes reveal a pre-existing, subclinical hypothyroidism. This is why thorough evaluation is often recommended before initiating GH therapy to exclude secondary thyroid issues. In some cases, GH-replacement therapy has been associated with an increased incidence of hypothyroidism, which has been linked to a reduced quality of lifeThe Effect and Potential Mechanism Analysis of Growth ....
A significant concern in HGH therapy is its potential to unmask or even exacerbate hypothyroidismEffects of Growth Hormone Therapy on Thyroid Function in .... In up to half of people treated with pituitary hormones, and in individuals with pituitary tumors, growth hormone can unmask hypothyroidism.Effects of growth hormone replacement therapy on thyroid ... This occurs because HGH influences various hormonal pathways, and this influence can reveal a deficiency in thyroid function that might not have been apparent otherwise.作者:AT Soliman·2013·被引用次数:10—Untreated primaryhypothyroidismis associated with decreased GH pulsatility, attenuation of GH response to secretagogues and a reduction in IGF-I and IGF ... In accordance with such a mechanism, GH therapy may then unmask hypothyroidismHypothyroidism (underactive thyroid) - Diagnosis and treatment.
Furthermore, hypothyroidism itself can impact the growth hormone axis. Untreated primary hypothyroidism is associated with decreased GH pulsatility, an attenuated GH response to secretagogues, and a reduction in IGF-I and IGF-II (Insulin-like Growth Factor). This highlights the bidirectional relationship between these hormones[Influence of replacement growth hormone therapy (hGH) on .... The GH–IGF axis is not affected in patients with subclinical hyperthyroidism, while it is affected in patients with subclinical hypothyroidism.
Based on current scientific understanding, HGH therapy is not a direct treatment for hypothyroidism. Instead, it can influence thyroid function and, in some cases, reveal or worsen existing thyroid impairments. Therefore, the answer to does HGH help with hypothyroidism? is generally no.
However, the interaction is nuanced. For individuals with established GHD and a need for HGH therapy, careful monitoring of thyroid function is paramount.作者:M Losa·2008·被引用次数:65—Background: Clinical studies on the effect ofgrowth hormone(GH) onthyroidfunction in patients with GH deficiency are contradictory. Further, the majority of ... If hypothyroidism is present or develops, it typically requires separate treatment with thyroid hormone replacement therapy, such as levothyroxine作者:G Amato·1996·被引用次数:25—Recombinant human growth hormone treatment at low dosesdoes not significantly change thyroid functionin growth hormone deficient adults.. It's also crucial to note that taking HGH with levothyroxine should only be done under strict medical supervision due to potential interactions.
In some specific contexts, GH might play a permissive role in the growth of the thyroid gland itself. However, this is distinct from treating the hormonal deficiency characteristic of hypothyroidism.Hypothyroidism (underactive thyroid) - Diagnosis and treatment For instance, people with severe untreated GHD caused by a homozygous deficiency may exhibit unique responses related to thyroid gland growth.
The conflicting findings in research underscore the need for further investigation into the precise mechanisms by which HGH interacts with the thyroid axis.作者:C Mo·2023·被引用次数:3—Current studies on the effect of highgrowth hormone(GH)/insulin-like growth factor (IGF)-1 onthyroidfunction are inconsistent. The aim was to explore ... Factors such as the dose of HGH, the duration of treatment, the patient's underlying endocrine status, and genetic predispositions likely all play a role.作者:C Giavoli·2003·被引用次数:81—Objective:Recombinant hGH treatment may alter thyroid hormone metabolismand we have recently reported that 50% of patients with GH deficiency (GHD) due to ... In patients with GH deficiency, hGH therapy can enhance hypothyroidism, especially if there are multiple pituitary hormone deficiencies.
While recombinant hGH treatment may alter thyroid hormone metabolism, its direct benefit for treating hypothyroidism has not been establishedABSTRACT. Introduction: Several studies found thatgrowth hormonetherapy affects many hormonal pathways in the body, for instance causing a decrease in FT4 .... Instead, managing hypothyroidism typically involves addressing the deficiency directly with appropriate thyroid hormone replacement. The goal of GH treatment is to restore growth and address the consequences of GH deficiency, not to cure thyroid disorders.
In summary, while HGH is a powerful hormone with wide-ranging effects, it does not directly treat hypothyroidism. Its administration requires careful consideration and monitoring of thyroid function to ensure patient safety and optimize therapeutic outcomes. The complexity of the HGH and thyroid relationship emphasizes the importance of personalized medical care and ongoing research in endocrinology.
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