What’s Testosterone Got to Do with It? A Critical Assessment of the Contribution of Testosterone to Gender Disparities in COVID-19 Infections and Deaths
Notice bibliographique
Résumé
In the short time since severe acute respiratory syndrome coronavirus 2 (henceforth referred to as coronavirus disease 2019 [COVID-19]) appeared, numerous articles have suggested that testosterone (T) may be a major contributor to infection and death since more men than women die, and two proteins involved in viral host entry are thought to be upregulated by androgens. We investigated whether the available data supported this supposition. A MEDLINE search was performed with keywords of COVID-19 variations and androgens or T. Data regarding COVID-19 infections and deaths were obtained from the literature, the World Health Organization, and the U.S. Center for Disease Control, GLOBAL HEALTH5050 and the Harvard School of Public Health Gender Science Laboratory. Studies with T measurements in COVID-19 patients were reviewed. Studies investigating the relationship between T and angiotensin converting enzyme 2 (ACE2) and the transmembrane protease serine 2 (TMPRSS2) expression were reviewed. Global and U.S. data reveal that infection rates in men and women are similar. Men accounted for 58% and women 42% of global deaths. U.S. data revealed a ratio of 54% male deaths to 46% female deaths. However, this finding was inconsistent, as several countries reported greater numbers of female deaths, for example, Canada, Portugal, Finland, and Vietnam. In the United States, 23.5% of states and territories reported more deaths among females. Highest death rates for men and women occurred among the elderly, when serum T is at its lifetime nadir, and low death rates were observed in young adults when serum T is at its peak. All four studies reporting T measurements in COVID-19 patients indicated that low T levels were associated with adverse outcomes, that is, transfer to intensive care unit or death. Although several studies did show androgenic upregulation of TMPRSS2 and ACE2 in prostate, and cancer cell lines of prostate and lung, human and murine lung tissue fails to show a difference in expression between males and females. Observed data fail to support the popular notion that androgens contribute meaningfully to COVID-19 infection and severity of illness. On the contrary, these data raise the possibility that low T may be responsible for disease severity. There is no evidence that androgens upregulate key proteins involved with COVID-19 infection in lung. The possibility that T therapy may aid management of hospitalized COVID-19 patients merits investigation.
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,002 | 0,006 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».