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Mental Health
The antidepressant effect of testosterone: An effect of neuroplasticity?
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<blockquote data-quote="madman" data-source="post: 162296" data-attributes="member: 13851"><p><strong><span style="color: rgb(184, 49, 47)">ABSTRACT</span></strong></p><p></p><p><strong>Background:</strong> <span style="color: rgb(184, 49, 47)">Rodent and human studies indicate that testosterone has an antidepressant effect.</span> The mechanisms via which testosterone exerts its antidepressant effect, however, remain to be elucidated. Some studies assume downstream effects of testosterone on sexual function and vitality followed by improvement of mood. Emerging evidence suggests that testosterone may be acting in the brain within depression-relevant areas, whereby eliciting direct antidepressant effects, potentially via neuroplasticity.</p><p></p><p><strong>Methods:</strong> Literature was searched focusing on testosterone treatment and depression and depression-like behavior. Due to the unilateral clinical use of testosterone in men and the different modes of action of sex hormones in the central nervous system in men and women, predominantly studies on male populations were identified.</p><p></p><p><strong>Results:</strong> <span style="color: rgb(184, 49, 47)">The two proposed mechanisms via which testosterone might act as antidepressant in the central nervous system are the support of neuroplasticity as well as the activation of the serotonin system. </span>Additionally, testosterone downregulates glucocorticoid output and reduces levels of pro-inflammatory markers, thereby acting as important counter regulatory agent reducing levels of neurotoxic factors in the central nervous system.</p><p></p><p><strong>Conclusion: </strong><span style="color: rgb(184, 49, 47)"><strong>Although it is possible that testosterone acts via the serotonin system or the downregulation of the immune or hyperactive stress physiological systems,</strong></span> <span style="color: rgb(44, 130, 201)"><strong>recent evidence supports the hypothesis that testosterone also elicits anti-depressant effects via directly promoting neuroplasticity.</strong></span> Potential implementations of testosterone treatment in mood disorders are discussed.</p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p><strong><span style="color: rgb(184, 49, 47)">7.</span> Conclusion </strong></p><p></p><p><span style="color: rgb(184, 49, 47)"><strong>This review highlights potential underlying pathways of the antidepressant effect of testosterone. Similar to other antidepressants, TT may increase neuroplasticity and thereby promote the reduction of depressive symptoms. </strong></span><span style="color: rgb(26, 188, 156)"><strong>While testosterone might exert beneficial effects on mood and behavior through the activation of the serotonin system, the here discussed studies suggest that a serotonin-independent antidepressant mechanism is also involved.</strong></span> <span style="color: rgb(0, 0, 0)"><strong>Additional beneficial effects of testosterone related to stress physiological systems as well as the immune system might further support the antidepressant effect of TT.</strong></span> <span style="color: rgb(147, 101, 184)"><strong>However, it is of note that not only testosterone alone, but also its site specific conversion to estradiol and other related metabolites may elicit antidepressant actions.</strong></span> In summary, the discussed studies prompt future research to determine the pathways that underlie the mood-enhancing effects of TT in order to potentially apply this approach for the treatment of depressive disorders in men.</p></blockquote><p></p>
[QUOTE="madman, post: 162296, member: 13851"] [B][COLOR=rgb(184, 49, 47)]ABSTRACT[/COLOR][/B] [B]Background:[/B] [COLOR=rgb(184, 49, 47)]Rodent and human studies indicate that testosterone has an antidepressant effect.[/COLOR] The mechanisms via which testosterone exerts its antidepressant effect, however, remain to be elucidated. Some studies assume downstream effects of testosterone on sexual function and vitality followed by improvement of mood. Emerging evidence suggests that testosterone may be acting in the brain within depression-relevant areas, whereby eliciting direct antidepressant effects, potentially via neuroplasticity. [B]Methods:[/B] Literature was searched focusing on testosterone treatment and depression and depression-like behavior. Due to the unilateral clinical use of testosterone in men and the different modes of action of sex hormones in the central nervous system in men and women, predominantly studies on male populations were identified. [B]Results:[/B] [COLOR=rgb(184, 49, 47)]The two proposed mechanisms via which testosterone might act as antidepressant in the central nervous system are the support of neuroplasticity as well as the activation of the serotonin system. [/COLOR]Additionally, testosterone downregulates glucocorticoid output and reduces levels of pro-inflammatory markers, thereby acting as important counter regulatory agent reducing levels of neurotoxic factors in the central nervous system. [B]Conclusion: [/B][COLOR=rgb(184, 49, 47)][B]Although it is possible that testosterone acts via the serotonin system or the downregulation of the immune or hyperactive stress physiological systems,[/B][/COLOR] [COLOR=rgb(44, 130, 201)][B]recent evidence supports the hypothesis that testosterone also elicits anti-depressant effects via directly promoting neuroplasticity.[/B][/COLOR] Potential implementations of testosterone treatment in mood disorders are discussed. [B][COLOR=rgb(184, 49, 47)]7.[/COLOR] Conclusion [/B] [COLOR=rgb(184, 49, 47)][B]This review highlights potential underlying pathways of the antidepressant effect of testosterone. Similar to other antidepressants, TT may increase neuroplasticity and thereby promote the reduction of depressive symptoms. [/B][/COLOR][COLOR=rgb(26, 188, 156)][B]While testosterone might exert beneficial effects on mood and behavior through the activation of the serotonin system, the here discussed studies suggest that a serotonin-independent antidepressant mechanism is also involved.[/B][/COLOR] [COLOR=rgb(0, 0, 0)][B]Additional beneficial effects of testosterone related to stress physiological systems as well as the immune system might further support the antidepressant effect of TT.[/B][/COLOR] [COLOR=rgb(147, 101, 184)][B]However, it is of note that not only testosterone alone, but also its site specific conversion to estradiol and other related metabolites may elicit antidepressant actions.[/B][/COLOR] In summary, the discussed studies prompt future research to determine the pathways that underlie the mood-enhancing effects of TT in order to potentially apply this approach for the treatment of depressive disorders in men. [/QUOTE]
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Mental Health
The antidepressant effect of testosterone: An effect of neuroplasticity?
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