Testicular Function in Hyperthyroidism

Testicular function was assessed in nine men aged 17 to 35 years and seven men aged 36 to 46 years with Graves' disease. Levels of total testosterone, estradiol, sex hormone binding globulin, luteinizing hormone, and follicle stimulating hormone, and gonadotropin responses to gonadotropin relea...

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Veröffentlicht in:Journal of andrology 1992-03, Vol.13 (2), p.117-124
Hauptverfasser: HUDSON, ROBERT W., EDWARDS, ALUN L.
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creator HUDSON, ROBERT W.
EDWARDS, ALUN L.
description Testicular function was assessed in nine men aged 17 to 35 years and seven men aged 36 to 46 years with Graves' disease. Levels of total testosterone, estradiol, sex hormone binding globulin, luteinizing hormone, and follicle stimulating hormone, and gonadotropin responses to gonadotropin releasing hormone were significantly greater than these levels and responses in age‐matched controls. Although the percentage of free testosterone was lower than control values in the hyperthyroid men, calculated levels of free testosterone were not different from normal. Lower than normal percentages of free estradiol values resulted in higher than normal calculated free estradiol levels. As a result, the free testosterone/free estradiol ratio in the men with Graves' disease was lower than normal. Although mean sperm densities in the hyperthyroid men were not different from control values, the percent forward progressive motility of sperm from these men was significantly lower than control values. The hormonal and seminal abnormalities corrected when the patients became euthyroid after radioiodine therapy. The results of this study indicate that hyperthyroid men may have abnormalities in their hypothalamic‐pituitary‐testicular axes.
doi_str_mv 10.1002/j.1939-4640.1992.tb01641.x
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Levels of total testosterone, estradiol, sex hormone binding globulin, luteinizing hormone, and follicle stimulating hormone, and gonadotropin responses to gonadotropin releasing hormone were significantly greater than these levels and responses in age‐matched controls. Although the percentage of free testosterone was lower than control values in the hyperthyroid men, calculated levels of free testosterone were not different from normal. Lower than normal percentages of free estradiol values resulted in higher than normal calculated free estradiol levels. As a result, the free testosterone/free estradiol ratio in the men with Graves' disease was lower than normal. Although mean sperm densities in the hyperthyroid men were not different from control values, the percent forward progressive motility of sperm from these men was significantly lower than control values. The hormonal and seminal abnormalities corrected when the patients became euthyroid after radioiodine therapy. The results of this study indicate that hyperthyroid men may have abnormalities in their hypothalamic‐pituitary‐testicular axes.</description><identifier>ISSN: 0196-3635</identifier><identifier>EISSN: 1939-4640</identifier><identifier>DOI: 10.1002/j.1939-4640.1992.tb01641.x</identifier><identifier>PMID: 1597395</identifier><identifier>CODEN: JOAND3</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Adolescent ; Adult ; Biological and medical sciences ; Dose-Response Relationship, Drug ; Endocrinopathies ; Estradiol - blood ; Follicle Stimulating Hormone - blood ; Gonadotropin-Releasing Hormone - pharmacology ; gonadotropins ; Humans ; Hyperthyroidism - blood ; Hyperthyroidism - drug therapy ; Hyperthyroidism - physiopathology ; Luteinizing Hormone - blood ; Male ; Medical sciences ; Middle Aged ; Non tumoral diseases. Target tissue resistance. Benign neoplasms ; Prolactin - blood ; Propranolol - therapeutic use ; Sex Hormone-Binding Globulin - analysis ; Sperm Count - drug effects ; sperm motility ; Sperm Motility - drug effects ; Testis - physiology ; Testosterone ; Testosterone - blood ; Thyroid Gland - drug effects ; Thyroid Gland - metabolism ; Thyroid Gland - physiology ; Thyroid. 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Levels of total testosterone, estradiol, sex hormone binding globulin, luteinizing hormone, and follicle stimulating hormone, and gonadotropin responses to gonadotropin releasing hormone were significantly greater than these levels and responses in age‐matched controls. Although the percentage of free testosterone was lower than control values in the hyperthyroid men, calculated levels of free testosterone were not different from normal. Lower than normal percentages of free estradiol values resulted in higher than normal calculated free estradiol levels. As a result, the free testosterone/free estradiol ratio in the men with Graves' disease was lower than normal. Although mean sperm densities in the hyperthyroid men were not different from control values, the percent forward progressive motility of sperm from these men was significantly lower than control values. The hormonal and seminal abnormalities corrected when the patients became euthyroid after radioiodine therapy. The results of this study indicate that hyperthyroid men may have abnormalities in their hypothalamic‐pituitary‐testicular axes.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Biological and medical sciences</subject><subject>Dose-Response Relationship, Drug</subject><subject>Endocrinopathies</subject><subject>Estradiol - blood</subject><subject>Follicle Stimulating Hormone - blood</subject><subject>Gonadotropin-Releasing Hormone - pharmacology</subject><subject>gonadotropins</subject><subject>Humans</subject><subject>Hyperthyroidism - blood</subject><subject>Hyperthyroidism - drug therapy</subject><subject>Hyperthyroidism - physiopathology</subject><subject>Luteinizing Hormone - blood</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Non tumoral diseases. Target tissue resistance. Benign neoplasms</subject><subject>Prolactin - blood</subject><subject>Propranolol - therapeutic use</subject><subject>Sex Hormone-Binding Globulin - analysis</subject><subject>Sperm Count - drug effects</subject><subject>sperm motility</subject><subject>Sperm Motility - drug effects</subject><subject>Testis - physiology</subject><subject>Testosterone</subject><subject>Testosterone - blood</subject><subject>Thyroid Gland - drug effects</subject><subject>Thyroid Gland - metabolism</subject><subject>Thyroid Gland - physiology</subject><subject>Thyroid. Thyroid axis (diseases)</subject><subject>Thyrotropin-Releasing Hormone - pharmacology</subject><issn>0196-3635</issn><issn>1939-4640</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqVkEtLAzEUhYMotVZ_glBEupsxd5JJGleWan1QdFPXIZPJYMo8atLB9t-bYUpdu8ol55z7-BC6ARwDxsndOgZBREQZDR9CJPE2w8AoxLsTNDxKp2iIQbCIMJKeowvv1yGLgZMBGkAqOBHpEE1Wxm-tbkvlxou21lvb1GNbj1_2G-O2X3vX2Nz66hKdFar05urwjtDn4mk1f4mWH8-v89ky0jRNIJryMJwaagwFwxgAIzQBA0IXkPHCpDzHqdY5J3RKVJoXU8OEUXhKUpxpnpMRmvR9N675bsNqsrJem7JUtWlaL3kimOBAgvG-N2rXeO9MITfOVsrtJWDZQZJr2ZGQHQnZQZIHSHIXwteHKW1Wmfwv2lMJ-u1BV16rsnCq1tYfbZRyHA4Ntofe9mNLs__HAvJt9v7YleQXvkODAg</recordid><startdate>199203</startdate><enddate>199203</enddate><creator>HUDSON, ROBERT W.</creator><creator>EDWARDS, ALUN L.</creator><general>Blackwell Publishing Ltd</general><general>American Society of Andrology</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>199203</creationdate><title>Testicular Function in Hyperthyroidism</title><author>HUDSON, ROBERT W. ; EDWARDS, ALUN L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4521-879394e4ee41e661163421e19cf1b7fe57d05ccd73483a5df8e69ea08350bc7d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>Adolescent</topic><topic>Adult</topic><topic>Biological and medical sciences</topic><topic>Dose-Response Relationship, Drug</topic><topic>Endocrinopathies</topic><topic>Estradiol - blood</topic><topic>Follicle Stimulating Hormone - blood</topic><topic>Gonadotropin-Releasing Hormone - pharmacology</topic><topic>gonadotropins</topic><topic>Humans</topic><topic>Hyperthyroidism - blood</topic><topic>Hyperthyroidism - drug therapy</topic><topic>Hyperthyroidism - physiopathology</topic><topic>Luteinizing Hormone - blood</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Non tumoral diseases. Target tissue resistance. Benign neoplasms</topic><topic>Prolactin - blood</topic><topic>Propranolol - therapeutic use</topic><topic>Sex Hormone-Binding Globulin - analysis</topic><topic>Sperm Count - drug effects</topic><topic>sperm motility</topic><topic>Sperm Motility - drug effects</topic><topic>Testis - physiology</topic><topic>Testosterone</topic><topic>Testosterone - blood</topic><topic>Thyroid Gland - drug effects</topic><topic>Thyroid Gland - metabolism</topic><topic>Thyroid Gland - physiology</topic><topic>Thyroid. Thyroid axis (diseases)</topic><topic>Thyrotropin-Releasing Hormone - pharmacology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>HUDSON, ROBERT W.</creatorcontrib><creatorcontrib>EDWARDS, ALUN L.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of andrology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>HUDSON, ROBERT W.</au><au>EDWARDS, ALUN L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Testicular Function in Hyperthyroidism</atitle><jtitle>Journal of andrology</jtitle><addtitle>J Androl</addtitle><date>1992-03</date><risdate>1992</risdate><volume>13</volume><issue>2</issue><spage>117</spage><epage>124</epage><pages>117-124</pages><issn>0196-3635</issn><eissn>1939-4640</eissn><coden>JOAND3</coden><abstract>Testicular function was assessed in nine men aged 17 to 35 years and seven men aged 36 to 46 years with Graves' disease. Levels of total testosterone, estradiol, sex hormone binding globulin, luteinizing hormone, and follicle stimulating hormone, and gonadotropin responses to gonadotropin releasing hormone were significantly greater than these levels and responses in age‐matched controls. Although the percentage of free testosterone was lower than control values in the hyperthyroid men, calculated levels of free testosterone were not different from normal. Lower than normal percentages of free estradiol values resulted in higher than normal calculated free estradiol levels. As a result, the free testosterone/free estradiol ratio in the men with Graves' disease was lower than normal. Although mean sperm densities in the hyperthyroid men were not different from control values, the percent forward progressive motility of sperm from these men was significantly lower than control values. The hormonal and seminal abnormalities corrected when the patients became euthyroid after radioiodine therapy. The results of this study indicate that hyperthyroid men may have abnormalities in their hypothalamic‐pituitary‐testicular axes.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><pmid>1597395</pmid><doi>10.1002/j.1939-4640.1992.tb01641.x</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record>
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subjects Adolescent
Adult
Biological and medical sciences
Dose-Response Relationship, Drug
Endocrinopathies
Estradiol - blood
Follicle Stimulating Hormone - blood
Gonadotropin-Releasing Hormone - pharmacology
gonadotropins
Humans
Hyperthyroidism - blood
Hyperthyroidism - drug therapy
Hyperthyroidism - physiopathology
Luteinizing Hormone - blood
Male
Medical sciences
Middle Aged
Non tumoral diseases. Target tissue resistance. Benign neoplasms
Prolactin - blood
Propranolol - therapeutic use
Sex Hormone-Binding Globulin - analysis
Sperm Count - drug effects
sperm motility
Sperm Motility - drug effects
Testis - physiology
Testosterone
Testosterone - blood
Thyroid Gland - drug effects
Thyroid Gland - metabolism
Thyroid Gland - physiology
Thyroid. Thyroid axis (diseases)
Thyrotropin-Releasing Hormone - pharmacology
title Testicular Function in Hyperthyroidism
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