Search results for "MCM41"

Loading and release of the complex [Pt(DTBTA)(DMSO)Cl]Cl·CHCl3 with the 2,2′-dithiobis(benzothiazole) ligand into mesoporous silica and studies of an…

2018

Abstract Synthetic delivery systems have great potential for overcoming problems associated with systemic toxicity that accompanies chemotherapy with the use of cisplatin and family of platinum anticancer drugs. Mesoporous silicates have been studied in context of drug delivery and drug targeting. In this paper we report the studies of loading and release of a platinum complex, [Pt(DTBTA)(DMSO)Cl]Cl∙CHCl3 (1) where DTBTA = 2,2′-dithiobis(benzothiazole), that was recently synthesized and structurally characterized. Evaluation in vitro of antitumor activity against a human breast cancer cell line (MCF-7) showed a very potent activity of complex(1). Therefore, we thought to incorporate this co…

Microwave applications in the synthesis of nanostructured materials and in organic extractions

2009

Pt(II) complex @mesoporous silica: preparation, characterization and study of release

2016

Cisplatin analogs, having cytotoxic activity higher than that exerted by cisplatin, have recently triggered considerable interest by the community. The cis-[PtCl2(DMSO)HL]·2DMSO, where HL = 7-amino-2-(methylthio)[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylic acid, has shown a potent cytotoxic activity on HepG2 hepatocarcinoma cells, while under identical conditions, it did not affect normal immortalized human liver cells (Chang). In this work, the above complex has been incorporated into MCM41 mesoporous silica, pure and functionalized with amino group, which is considered one of the best host for a drug delivery system for carrying high dosages of a variety of drugs in their mesopores. Sinc…

PREPARAZIONE E CARATTERIZZAZIONE DI SISTEMI A RILASCIO CONTROLLATO PER APPLICAZIONI SU MANUFATTI DI INTERESSE STORICO-ARTISTICO

2014

Lo scopo di questo studio è la realizzazione e lo studio di sistemi a rilascio controllato costituiti da silice mesoporosa MCM-41 e biocidi commerciali e di nuova generazione. Tali materiali possono essere utilizzati in ambito conservativo per risolvere alcuni problemi di biodeterioramento che interessano i manufatti di interesse storico-artistico e a scopo preventivo per ridurre il numero e la frequenza di interventi conservativi. La MCM-41 è stata preparata in ambiente alcalino mediante il metodo sol-gel utilizzando dei tensioattivi come templanti1. Al fine di creare un’interazione favorevole biocida-superficie, sulla superficie dei pori sono stati ancorati gruppi amminici. L’incapsulamen…

Incorporation of Pt(II) complex with [amino-2(methylthio)(1,2,4)triazole-(1,5-a)pyrimidine-6-carboxylic-acid] ligand in MCM41 for controlled release

2015

Drug carriers play a critical role for the loading and the release of the drug. A promising frontier is represented by a new class of innovative medicines that represents directional transport vehicles "drug delivery" and consist of assembled structures carrier (nano)-drug. Silica-based materials, nontoxic, biocompatible, have been used as adjuvant and excipient in pharmaceutical technology. In this class of compounds, the mesoporous materials, such as MCM41, SBA-15 and hexagonal mesoporous silica, have been investigated for medication and drug delivery due to their properties. In fact, these materials show a large specific pore volume made up of regular pores having a diameter in the nanom…