- Unprecedented catalytic activity of Mn3O4 nanoparticles: Potential lead of a sustainable therapeutic agent for hyperbilirubinemia
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We report an unprecedented catalytic decomposition of aqueous bilirubin solution, without any photo-activation, by citrate functionalized Mn 3O4 nanoparticles (NPs). In vitro reactivity of the catalyst on the whole blood specimen of hyperbilirubinemia patients revealed that the catalyst can significantly suppress the total bilirubin level in the blood specimens.
- Giri, Anupam,Goswami, Nirmal,Sasmal, Chandan,Polley, Nabarun,Majumdar, Dipanwita,Sarkar, Sounik,Bandyopadhyay, Sambhu Nath,Singha, Achintya,Pal, Samir Kumar
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- Photochemistry of Biliverdin IXδ as a Model for the Study of the Photoproducts from Natural Biliverdin IXγ (Pterobilin)
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The configurations of biliverdin-IXγ and -IXδ dimethyl esters 1 and 2 in solutions, have been studied using Nuclear-Overhauser-Effect (NOE) experiments.Irradiation (500-700 nm) of biliverdin IXδ gave syn-Z -> anti-E isomerization of the central methine bridge and in aerated polar solutions, four new cyclized pigments were isolated for which structures 3, 4, 5 and 6 are proposed.Neobiliverdin IXδ is also formed in degassed solution (Φ = 4E-5) but pigments 4, 5 and 6 arise from photo-oxidation with O2.Biliverdin IXδ appears to be a good model for the study of photo-reactions occurring on the vinyl groups of the natural biliverdin IXγ (pterobilin).
- Bois-Choussy, Michele,Barbier, Michel
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p. 1098 - 1110
(2007/10/02)
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