Androgen - androgen (English spelling)

Japanese: アンドロゲン - あんどろげん(英語表記)androgen
Androgen - androgen (English spelling)

A general term for male hormones and substances that have the same physiological effects. They have effects such as sexual differentiation during the fetal period, maintaining the function of reproductive organs, the expression of secondary male sexual characteristics, and promoting protein anabolism. Chemically, they are all steroid derivatives. They are secreted from the Leydig interstitial cells of the testes. The main naturally occurring hormones include testosterone, which has the strongest physiological activity, as well as androsterone, dehydroepiandrosterone, and androstenedione. Adrenosterone, which is detected in the adrenal cortex, is also an androgen.

Pharmaceutical products include testosterone acetate and propionate, and methyltestosterone, which is testosterone with a methyl group at the 17th position.

The use of artificially synthesized anabolic steroids such as stanozol (doping) for the purpose of increasing muscle strength through the protein anabolic effects of male hormones has become a problem in modern sports, and tests for these steroids (doping tests) are being carried out.

[Yoshinori Fujimoto]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

男性ホルモンおよびこれと同じ生理作用をもつ物質の総称。胎生期の性分化、生殖器官の機能維持、雄の第二次性徴の発現、タンパク質同化作用の促進などの作用をもつ。化学的にはいずれもステロイド誘導体である。精巣のライディッヒLeydig間細胞から分泌される。天然にあるおもなホルモンとして、もっとも強い生理活性を示すテストステロンをはじめ、アンドロステロン、デヒドロエピアンドロステロン、アンドロステンジオンなどがある。そのほか副腎(ふくじん)皮質中に検出されるアドレノステロンもアンドロゲンの一つである。

 医薬品としては、テストステロンアセテートおよびプロピオネート、テストステロンの17の位置にメチル基を入れたメチルテストステロンなどがある。

 男性ホルモンのタンパク質同化作用による筋力増強を目的として、人工的に合成されたスタノゾールなどのアナボリックステロイドの使用(ドーピング)が近代スポーツにおいて問題となっており、これらのステロイドの検査(ドーピング検査)が実施されている。

[藤本善徳]

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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