Cell Cycle. 2009 Jun 15;8(12):1820-1. Epub 2009 Jun 15.
Forever young, slim and fit: rapamycin to the rescue.
Darzynkiewicz Z.
Brander Cancer Research Institute, New York Medical College, Valhalla, NY, USA. Z_DARZYNKIEWICZ@nymc.edu
Comment on:
* Cell Cycle. 2009 Jun 15;8(12):1888-95.
PMID: 19471126 [PubMed - indexed for MEDLINE]
Publication Types, MeSH Terms, Substances
Publication Types:
* Comment
MeSH Terms:
* Animals
* Autophagy/drug effects*
* Autophagy/physiology
* Cell Aging/drug effects*
* Cell Aging/physiology
* Cell Cycle/drug effects
* Cell Cycle/physiology
* Cyclin-Dependent Kinase Inhibitor p16/biosynthesis*
* Cyclin-Dependent Kinase Inhibitor p21/biosynthesis*
* Humans
* Protein Kinases/drug effects*
* Protein Kinases/metabolism
* Signal Transduction/physiology
* Sirolimus/pharmacology*
Substances:
* Cyclin-Dependent Kinase Inhibitor p16
* Cyclin-Dependent Kinase Inhibitor p21
* Sirolimus
* mTOR protein
* Protein Kinases
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Patient drug information
* Sirolimus (Rapamune®)
Sirolimus is used in combination with other medications to prevent rejection of kidney transplants. Sirolimus is in a class of medications called immunosuppressants. It works by suppressing the body's immune system.
* Source: AHFS Consumer Medication Information
Zotarolimus, sirolimus e paclitaxel, validi contro Stemi
Zotarolimus, sirolimus e paclitaxel risulterebbero parimenti efficaci nel trattamento di pazienti con infarto in corso e sopraslivellamento del tratto ST (STEMI). E' quanto emerge da uno studio pubblicato su American Journal of Cardiology, che in questi pazienti ha voluto confrontare gli outcome derivanti dall'impiego di stent a rilascio dei tre differenti farmaci. In 12 centri sono stati reclutati 328 pazienti Stemi abbinati per quadri clinici e angiografici e poi randomizzati a ricevere zotarolimus, sirolimus e paclitaxel. Dopo 8 mesi dall'impianto degli stent, nel gruppo trattato con sirolimus rispetto a quelli con zotarolimus e paclitaxel, sia la "in-segment late loss (0,28 ± 0,42 vs 0,46 ± 0,48 vs 0,47 ± 0,50 mm, rispettivamente) sia l'incidenza di restenosi sono risultate inferiori (2,7% vs 15,9% vs 12,3%, rispettivamente). In aggiunta, dopo 12 mesi la frequenza di Mace (eventi cardiaci maggiori sfavorevoli) è risultata pari a 11,3%, 8,2%, e 8,2% con zotarolimus, sirolimus e paclitaxel, rispettivamente. Infine, nessuna differenza tra i tre farmaci è stata riscontrata nel tasso di mortalità, d'infarto miocardico ricorrente e di rivascolarizzazione del vaso target (L.A.).
American Journal of Cardiology 2009; 104 (10): 1370-76
Tacrolimus treatment increases bone formation in patients with rheumatoid arthritis. 2009
Tacrolimus is a calcineurin inhibitor, and it is used for the treatment of rheumatoid arthritis (RA). It works by inhibiting nuclear factor of activated T cells and inducting immunosuppression. This study aims to evaluate the influence of tacrolimus on the bone metabolism of patients with RA. Twenty-eight RA patients in three centers received tacrolimus 3 mg once daily for 24 weeks. Blood samples for evaluating bone metabolism and cytokines were collected at Weeks 0 and 24. We measured the serum C-telopeptide of type I collagen (sCTx-I), osteocalcin and inflammatory cytokines. We analyzed the data using the Kruskal-Wallis test and Spearman's correlation. IL-2 and IL-6 were significantly decreased after the administration of tacrolimus (p = 0.027 and p = 0.024). There was no significant difference in the serum level of sCTx-I before and after treatment. The level of serum osteocalcin at Week 24 was significantly increased compared to the level at Week 0 (p = 0.002). The increase of osteocalcin was correlated with the reductions of IL-2 and IFN-γ (r = 0.405, p = 0.033 and r = 0.380, p = 0.046, respectively). Tacrolimus treatment increased bone formation markers in RA patients. This suggests that tacrolimus may play a role to inhibit bone erosion by increasing bone formation as well as improving the clinical symptoms of RA.
