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61.
62.
Tatiana G. Rudenko Anatoly B. Shekhter Anna E. Guller Nadezhda A. Aksenova Nikolay N. Glagolev Andrey V. Ivanov Ruben K. Aboyants Svetlana L. Kotova Anna B. Solovieva 《Photochemistry and photobiology》2014,90(6):1413-1422
There is a growing demand on the studies of the wound healing potentials of photodynamic therapy. Here we analyze the effects of Fotoditazin, an e6 chlorine derivative, and its complexes with amphiphilic polymers, on the early stage of wound healing in a rat model. A skin excision wound model with prevented contraction was developed in male albino rats divided into eight groups according to the treatment mode. All animals received injections of one of the studied compositions into their wound beds and underwent low‐intensity laser irradiation or stayed un‐irradiated. The clinical monitoring and histological examination of the wounds were performed. It has been found that all the Fotoditazin formulations have significant effects on the early stage of wound healing. The superposition of the inflammation and regeneration was the main difference between groups. The aqueous solution of Fotoditazin alone induced a significant capillary hemorrhage, while its combinations with amphiphilic polymers did not. The best clinical and morphological results were obtained for the Fotoditazin–Pluronic F127 composition. Compositions of Fotoditazin and amphiphilic polymers, especially Pluronic F127, probably, have a great potential for therapy of wounds. Their effects can be attributed to the increased regeneration and suppressed reactions changes at the early stages of repair. 相似文献
63.
M. A. Tel'nova S. V. Belyaev T. S. Kotova V. M. Stepanov 《Chemistry of Natural Compounds》1977,13(2):222-225
Summary A method has been developed for isolating a fraction enriched in -globulin from human blood serum on a column of aminosilochrome C-80.All-Union Scientific-Research Institute of the Genetics and Breeding of Industrial Microorganisms, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 261–265, March–April, 1977. 相似文献
64.
A. V. Zolotarev E. V. Karlova S. P. Kotova V. V. Patlan K. N. Russkov S. A. Samagin T. N. Saptsina 《Bulletin of the Lebedev Physics Institute》2013,40(12):339-345
The optimization problem of increasing the depth of the sharply imaged space of the intraocular lens is considered depending on its phase transmission. For a set of aberrations with axial symmetry, the phase profile of the model optical system is determined, which makes it possible to obtain recognizable images of a test object placed at a distance from 5 m to 40 cm. 相似文献
65.
D. L. Kotova Do Thi Long T. A. Krysanova V. F. Selemenev 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2011,85(12):2209-2213
The effect of acid activation on the sorption of clynoptilolyte tufa with respect to phenylalanine is investigated. The treatment
of clynoptilolyte tufa with 4.0 M of hydrochloric acid is found to yield a substantial increase in sorption of the aromatic
amino acid. Different types of interaction in the acid-activated clynoptilolyte tufa-water-aromatic amino acid are revealed.
The effect of pH of the solution of the sorption parameter is demonstrated. 相似文献
66.
Kotova O Daly R dos Santos CM Boese M Kruger PE Boland JJ Gunnlaugsson T 《Angewandte Chemie (International ed. in English)》2012,51(29):7208-7212
Eu(III), the last piece in the puzzle: Europium-induced self-assembly of ligands having a C(3)-symmetrical benzene-1,3,5-tricarboxamide core results in the formation of luminescent gels. Supramolecular polymers are formed through hydrogen bonding between the ligands. The polymers are then brought together into the gel assembly through the coordination of terpyridine ends by Eu(III) ions (blue dashed arrow: distance between two ligands in the strand direction). 相似文献
67.
The design and synthesis of dinuclear-lanthanide complexes possessing triazole-based bridges, formed by using copper catalysed 1,3-cycloaddition reactions between heptadentate alkyne functionalised cyclen europium or terbium complexes and di-azides (CuAAC reactions), are described. While this click reaction worked well for the formation of the homo-Eu(III) and Tb(III) bis-tri-arm cyclen N,N-dimethyl acetamide complexes, 2Eu and 2Tb, and for the homo-Eu(III) chiral N-methylnaphthalene based complexes 3Eu (S,S,S) and 4Eu (R,R,R), the formation of the Eu(III) complex of the primary amide analogue of 2, namely 1Eu, was not successful, clearly demonstrating the effect that the nature of the pendant arms has on this reaction. Furthermore, the click reactions between the free alkyne cyclen bis-derivatives (5-8) and the di-azide were unsuccessful, most likely due to the high affinity of the cyclen macrocycles for Cu(II). The Eu(III) complexes of 2-4 and 2Tb all gave rise to sensitised metal ion centred emission upon excitation of the triazole or the naphthalene antennae in methanol solution, and their hydration states were determined, which showed that while the Eu(III) mono-nuclear complexes had q ~ 2, the click products all had q ~ 1. In the case of 3Eu (S,S,S) and 4Eu (R,R,R), the circular polarised emission (CPL) was also observed for both, demonstrating the chiral environment of the lanthanide centres. 相似文献
68.
N. A. Aksenova T. Oles T. Sarna N. N. Glagolev A. V. Chernjak V. I. Volkov S. L. Kotova N. S. Melik-Nubarov A. B. Solovieva 《Laser Physics》2012,22(10):1642-1649
We have studied the effect of amphiphilic polymers with different structure (polyvinylpyrrolidone, polyethyleneoxide and a triblock copolymer of ethylene- and propyleneoxide—(Pluronic F127)) on the photoactivity of a hematoporphyrin derivative (dimegin). It has been shown that such polymers can cause a considerable increase in the porphyrin photosensitizer (PPS) activity both in the process of singlet oxygen photogeneration and in the reaction of a substrate photooxidation in D2O and water. Among the studied polymers, polyvinylpyrrolidone appeared to have a most significant influence onto the photoactivity of dimegin. We attribute the observed effect of the amphiphilic polymers on the photoactivity of dimegin to the presence of polymer-porphyrin interactions resulting in the porphyrin disaggregation in aqueous phase. Using 1H NMR spectroscopy, we have found that dimegin binds to the polymers via the PPS interaction mainly with the hydrophobic fragments of polymeric macromolecules. However, in the case of polyvinylpyrrolidone we observed also PPS interactions with the hydrophilic fragments of macromolecules. 相似文献
69.
N. N. Glagolev A. B. Solovyeva A. V. Cherkasova V. P. Mel’nikov A. Ya. Lyapunov P. S. Timashev A. V. Kotova B. I. Zapadinsky V. N. Bagratashvili 《Russian Journal of Physical Chemistry B, Focus on Physics》2010,4(7):1092-1096
Supercritical fluid impregnation was used to perform matrix isolation of spiroanthroxazine (SAO) photochromic molecules in
halogenated polymer films (polyvinylchloride and tetrafluoroethylene copolymer with vinylidene fluoride). An excited (colored)
SAO form not relaxing to the ground (colorless) state was stabilized in polymers. Such a long-lived excited SAO form could
exist as an isomer of the B form (B535 with an absorption band at λmax = 535 nm) in the fluorinated polymer matrix, for which the absorption maximum was shifted by more than 75 nm to the blue,
and as the B form with a small admixture of the B535-form (in polyvinylchloride). 相似文献
70.
E. G. Abramochkin K. N. Afanasiev V. G. Volostnikov A. V. Korobtsov S. P. Kotova N. N. Losevsky A. M. Mayorova E. V. Razueva 《Bulletin of the Russian Academy of Sciences: Physics》2008,72(1):68-70
method for calculating phase diffractive elements is proposed to form light fields with intensity described by flat curves. This method is based on the optics of spiral light beams and Gerchberg-Saxton iterative algorithm. The experimental data on the formation of fields and their use in manipulation with latex microparticles are reported. 相似文献