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  • Biolocalisation and photochemical properties of novel macrocyclic photosensitisers, guanidiniocarbonyl-substituted tetraphenylporphyrin (1) and sugar-substituted sapphyrin (2) were investigated by spectroscopic methods. Both photosensitisers absorb in far visible region and showed good tumour localisation. Photosensitiser 2 demonstrated significantly larger absolute and relative to normal tissue (T/N) amount in tumour (330 mug g(-1) wet tissue, T/N = 19.0) than photosensitiser 1 did (13 mug g(-1) wet tissue, T/N = 2.1). According to iodometric and uric acid assays, compound 1 produced large amount of O-1(2) (Phi(Delta) = 0.60-0.68), while compound 2 showed non-significant O-1(2) production (Phi(Delta) = 0.04). The electronic spectroscopic study confirms that only photosensitiser 1 is able to mediate photooxidation of model compounds (BSA, poly(Trp), Tyr, Trp, and GMP) after light irradiation. Pour photochemical activity of compound 2 was explained by its self-aggregation. Raman spectroscopic study ind
  • Biolocalisation and photochemical properties of novel macrocyclic photosensitisers, guanidiniocarbonyl-substituted tetraphenylporphyrin (1) and sugar-substituted sapphyrin (2) were investigated by spectroscopic methods. Both photosensitisers absorb in far visible region and showed good tumour localisation. Photosensitiser 2 demonstrated significantly larger absolute and relative to normal tissue (T/N) amount in tumour (330 mug g(-1) wet tissue, T/N = 19.0) than photosensitiser 1 did (13 mug g(-1) wet tissue, T/N = 2.1). According to iodometric and uric acid assays, compound 1 produced large amount of O-1(2) (Phi(Delta) = 0.60-0.68), while compound 2 showed non-significant O-1(2) production (Phi(Delta) = 0.04). The electronic spectroscopic study confirms that only photosensitiser 1 is able to mediate photooxidation of model compounds (BSA, poly(Trp), Tyr, Trp, and GMP) after light irradiation. Pour photochemical activity of compound 2 was explained by its self-aggregation. Raman spectroscopic study ind (en)
  • Biolokalizace a fotochemické vlastnosti nových makrocyklických fotosensitizérů, guanidiniokarbonyl-substituovaného tetrafenylporfyrinu (1) a cukrem-substituovaného safyrinu (2) byly zkoumány spektroskopickými metodami. Oba fotosensitizéry absorbují v daleké viditelné oblasti a vykazují dobrou lokalizaci v nádoru. Fotosensitizér 2 vykázal jednoznačně vyšší absolutní i relativní k normální tkáni (T/N) množství v nádoru (300 micro g g-1 mokré tkáně, T/N=2.1). Podle jodometrické zkoušky a zkoušky na kyselinu močovou produkovala látka 1 vyšší množství 1O2 (??=0.60-0.68), zatímco látka 2 nevykazovala významnou produkci 1O2 (??=0.04). Elektronická spektroskopická studie potvrdila, že pouze fotosensitizér 1 schopen zprostředkovat fotooxidaci modelových látek (BSA, poly(Trp), Tyr, Trp, a GMP) po ozáření světlem. Slabá fotochemická aktivita látky 2 byla vysvětlena jeho samoagregací. Ramanova spektroskopická studie ukázala, že monomerní fotosensitizér 2 účinně poškodil BSA a DNA z telecího brzlíku po světelné ex (cs)
Title
  • Biolokalizace a fotochemické vlastnosti dvou makrocyklických fotosensitiserů: spektroskopické studium (cs)
  • Biolocalisation and photochemical properties of two novel macrocyclic photosensitisers: a spectroscopic study
  • Biolocalisation and photochemical properties of two novel macrocyclic photosensitisers: a spectroscopic study (en)
skos:prefLabel
  • Biolokalizace a fotochemické vlastnosti dvou makrocyklických fotosensitiserů: spektroskopické studium (cs)
  • Biolocalisation and photochemical properties of two novel macrocyclic photosensitisers: a spectroscopic study
  • Biolocalisation and photochemical properties of two novel macrocyclic photosensitisers: a spectroscopic study (en)
skos:notation
  • RIV/60461373:22340/04:00013203!RIV/2005/GA0/223405/N
http://linked.open.../vavai/riv/strany
  • 73-84
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA203/02/0420), Z(MSM 223400008)
http://linked.open...iv/cisloPeriodika
  • 74
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 556224
http://linked.open...ai/riv/idVysledku
  • RIV/60461373:22340/04:00013203
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Novel macrocyclic photosensitisers;self-aggregation;biolocalisation in tumour;singlet oxygen;photodynamic damage;electronic spectroscopy;Raman spectroscopy (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [CA5FAD50C8F7]
http://linked.open...i/riv/nazevZdroje
  • Journal of Photochemistry and Photobiology B: Biology
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • Neuveden
http://linked.open...iv/tvurceVysledku
  • Král, Vladimír
  • Synytsya, Alla
  • Volka, Karel
  • Blechová, M.
http://linked.open...n/vavai/riv/zamer
issn
  • 1011-1344
number of pages
http://localhost/t...ganizacniJednotka
  • 22340
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