corneal-donor-tissue-preparation-for-endothelial-keratoplasty

Corneal Donor Tissue Preparation for Endothelial Keratoplasty

Over the past ten years, corneal transplantation surgical techniques have undergone revolutionary changes1,2. Since its inception, traditional full ...

corneal-donor-tissue-preparation-for-descemet-s-membrane-endothelial

Corneal Donor Tissue Preparation for Descemet's Membrane Endothelial Keratoplasty

Descemet&#8217;s Membrane Endothelial Keratoplasty (DMEK) is a form of corneal transplantation in which only a single cell layer, the corneal endothelium, ...

University of Michigan 

Rapamycin increases lifespan in mice, but whether this represents merely inhibition of lethal neoplastic diseases, or an overall slowing in multiple aspects of aging is currently unclear. We report here that many forms of age-dependent change, including alterations in heart, liver, adrenal glands, endometrium, and tendon, as well as age-dependent decline in spontaneous activity, occur more slowly in rapamycin-treated mice, suggesting strongly that rapamycin retards multiple aspects of aging in mice, in addition to any beneficial effects it may have on neoplastic disease. We also note, however, that mice treated with rapamycin starting at 9 months of age have significantly higher incidence of testicular degeneration and cataracts; harmful effects of this kind will guide further studies on timing, dosage, and tissue-specific actions of rapamycin relevant to the development of clinically useful inhibitors of TOR action.

Rapamycin slows aging in mice.

Rapamycine augmente la dur&eacute;e de vie chez les souris, mais si il s&#39;agit simplement de l&#39;inhibition de maladies n&eacute;oplasiques mortelles, ou un ralentissement global dans plusieurs aspects du vieillissement est actuellement incertaine. Nous rapportons ici que plusieurs formes de changement de fonction de l&#39;&acirc;ge, y compris toute modification dans le c&oelig;ur, foie, glandes surr&eacute;nales, endom&egrave;tre et tendon, ainsi que fonction de l&#39;&acirc;ge d&eacute;clin de l&#39;activit&eacute; spontan&eacute;e, se produisent plus lentement chez les souris trait&eacute;es &agrave; la rapamycine, sugg&eacute;rant fortement que la rapamycine retarde les multiples aspects du vieillissement chez la souris, en plus des effets b&eacute;n&eacute;fiques, elle pourrait avoir sur la maladie n&eacute;oplasique. Notons aussi, cependant, que les souris trait&eacute;es avec la rapamycine &agrave; partir de 9 mois ont une incidence significativement plus &eacute;lev&eacute;e de d&eacute;g&eacute;n&eacute;rescence testiculaire et de la cataracte ; les effets nocifs de ce genre guidera plus amples &eacute;tudes sur le cadencement, dosage et mesures de tissu-sp&eacute;cifique de la rapamycine pour l&#39;&eacute;laboration d&#39;inhibiteurs cliniquement utiles d&#39;action TOR.

La rapamycine ralentit le vieillissement chez des souris.

Rapamicina aumenta la durata della vita nei topi, ma se questo rappresenta soltanto l&#39;inibizione di letali malattie neoplastiche, o un generale rallentamento nei molteplici aspetti dell&#39;invecchiamento &egrave; attualmente poco chiaro. Segnaliamo qui che molte forme di cambiamento di et&agrave;-dipendente, tra cui alterazioni nel cuore, fegato, ghiandole surrenali, dell&#39;endometrio e tendine, cos&igrave; come il declino et&agrave;-dipendente nell&#39;attivit&agrave; spontanea, si verificano pi&ugrave; lentamente nei topi trattati con rapamicina, suggerisce fortemente che ritarda la rapamicina molteplici aspetti dell&#39;invecchiamento nei topi, oltre a eventuali effetti benefici pu&ograve; avere sulla malattia neoplastica. Notiamo anche, tuttavia, che i topi trattati con rapamicina a partire da 9 mesi di et&agrave; hanno significativamente pi&ugrave; alta incidenza di degenerazione testicolare e cataratta; gli effetti nocivi di questo tipo guida ulteriori studi sul temporizzazione, dosaggio e tessuto-specifiche azioni di rapamicina rilevante per lo sviluppo di inibitori clinicamente utili di azione TOR.

Maria A. Woodward

Department of Ophthalmology

University of Michigan

Corneal Donor Tissue Preparation for Endothelial Keratoplasty

Corneal Donor Tissue Preparation for Descemet's Membrane Endothelial Keratoplasty

Maria A. Woodward

.css-o250i3{font-size:18px;font-family:Open Sans,sans-serif;line-height:21.6px;}Department of Ophthalmology

University of Michigan

Corneal Donor Tissue Preparation for Endothelial Keratoplasty

Corneal Donor Tissue Preparation for Descemet's Membrane Endothelial Keratoplasty

Department of Ophthalmology