Contacts:  Questo indirizzo email è protetto dagli spambots. E' necessario abilitare JavaScript per vederlo.

Supervisors:  Giovanni Grannucci, Maurizio Persico, Inés Corral e Jordi Muñoz-Muriedas

Title:  Phototoxicity and stability of pharmaceutical excipients and drugs

Abstract:
Light interaction with drugs and pharmaceutical excipients can result in the loss of potency, inactivation or in the formation of cytotoxic metabolites with side effects for the patients. In the course of manufacture, storage or after administration, pharmaceuticals may be exposed to different light sources driving these formulations to their excited states. In the absence of efficient decay mechanisms, the temporary energy trapping of these systems in stable singlet or triplet excited intermediates would enhance the probability of undergoing photoreactions. In particular, if long-lived triplet excited states happen to be populated, they could initiate photosensitization and/or charge or energy transfer reactions with other surrounding molecules, leading to cytotoxic side products, such as singlet oxygen or free radicals, able to oxidize a large number of substances, including cell components. The aim of the present project is to explore the photostability/phototoxicity of several organic systems used as excipients or drugs in pharmaceutical formulations.

Publications:

Oral communications at congress:
• Phototoxicity and stability of pharmaceutical excipients and drug
  1^st Annual Workshop; Paris, France; July 2016.
• Phototoxicity and stability of pharmaceutical drugs
  Mid-term Meeting; Madrid, Spain; December 2016.
• Phototoxicity of Non-Steroidal Anti-Inflammatory Drugs insight through In-Silico Calculations
  6^th TCCM Workshop, Barcelona, Spain; September 2017.

Poster communications at congress:
• Exploring photostability of drugs with theoretical methods
   8^th MQM; Uppsala, Sweden; June 2016.
• Phototoxicity and stability of pharmaceutical excipients and drug
   1^st Annual Workshop; Paris, France; July 2016.
• Ab initio approach to drug photosensitivity
   Mid-term Meeting; Madrid, Spain; December 2016.
• In-silico study to predict phototoxicity of non-steroidal anti-inflammatory drugs
   The British Toxicology Society, Liverpool, UK, April 2017.
• Can we assess phototoxicity of non-steroidal anti-inflammatory drugs  through in-silico calculations?
    UKQSAR, Berkshire,UK, April 2017
• Understanding the behaviour of NSAIDS drugs upon light exposure with in silico modelling, 2^nd TCCM Workshop, Leuven, Belgium, July 2017
• Excited States Insight to Assess Phototoxicity of Non-Steroidal Anti-Inflammatory Drugs,
   WATOC’17, Munich, Germany, August 2017.
• Phototoxicity of non-steroidal anti-inflammatory drugs insight through in-silico calculations,
   11th EUCO-TCC, Barcelona, Spain, September 2017.
• Can in-silico calculations assess phototoxicity of non-steroidal anti-inflammatory drugs?
   EuroTox, Bratislava, Slovakia, September 2017.
• In silico modelling insight into assessing NSAIDS excited states deactivation mechanisms, 2^nd Annual Workshop, Leuven, Belgium, July 2017.
• Exploring light activated mechanisms in Non-steroidal anti-inflammatory drugs,
   6^th TCCM Workshop, Barcelona, Spain, September 2017.