@article {2032,
	title = {Engineering tandem modular protein based reversible hydrogels},
	journal = {Chemical Communications},
	number = {35},
	year = {2008},
	note = {ISI Document Delivery No.: 349TRTimes Cited: 6Cited Reference Count: 22Cao, Yi Li, Hongbin},
	pages = {4144-4146},
	type = {Article},
	abstract = {We report the engineering of the first tandem modular protein based hydrogel that exhibits unique properties combining low erosion rate, fast and reversible sol-gel transition and antibody binding ability.},
	keywords = {AGGREGATION, BINDING DOMAINS, BIOMATERIALS},
	isbn = {1359-7345},
	url = {<Go to ISI>://000259306700010},
	author = {Cao, Y. and Li, H. B.}
}
@article {596,
	title = {Correlation of photosensitizer delivery to lipoproteins and efficacy in tumor and arthritis mouse models; comparison of lipid-based and Pluronic P123 formulations},
	journal = {Journal of Pharmacy and Pharmaceutical Sciences},
	volume = {6},
	number = {2},
	year = {2003},
	note = {ISI Document Delivery No.: 729PJTimes Cited: 21Cited Reference Count: 16},
	month = {May-Aug},
	pages = {198-204},
	type = {Article},
	abstract = {The purpose of this study was the use of animal models to demonstrate the importance of drug delivery (verteporfin) to plasma lipopropteins in order to attain efficacy of photodynamic therapy (PDT) in vivo. METHODS. Photosensitzers appropriately formulated in various vehicles such as pluronics and lipid-based systems were compared to delivery of the drug in DMSO in two in vivo systems. The first was a tumor model using male DBA/2 mice inoculated intradermally with M1 rhabdomyosarcoma cells and in the second, arthritis in the MRL-lpr mouse strain was enhanced by two intradermal injections of complete Freunds adjunct. RESULTS. Those formulations in which the drug was in a monomeric form were better able to transfer drug to lipoproteins, which in turn led to superior PDT in vivo. CONCLUSIONS. The ability to introduce drug in monomeric form into the circulation correlates well with efficacy of photosensitizer formulations in mouse arthritis and tumor models.},
	keywords = {AGGREGATION, PLASMA-LIPOPROTEINS, SURFACTANTS},
	isbn = {1482-1826},
	url = {<Go to ISI>://000185782200003},
	author = {Chowdhary, R. K. and Sharif, I. and Chansarkar, N. and Dolphin, D. and Ratkay, L. and Delaney, S. and Meadows, H.}
}
@article {595,
	title = {Formulation of benzoporphyrin derivatives in pluronics},
	journal = {Photochemistry and Photobiology},
	volume = {77},
	number = {3},
	year = {2003},
	note = {ISI Document Delivery No.: 656FVTimes Cited: 10Cited Reference Count: 9},
	month = {Mar},
	pages = {299-303},
	type = {Article},
	abstract = {This study investigates the potential of Pluronics for the formulation of tetrapyrrole-based photosensitizers, with a particular focus on B-ring benzoporphyrin derivatives. The B-ring derivatives have a high tendency to aggregate in aqueous solutions, and this poses a significant formulation problem. Pluronics are ABA-type triblock copolymers composed of a central hydrophobic polypropylene oxide section with two hydrophilic polyethylene oxide sections of equal length at either end. Out of a range of different commercially available block copolymers studied, it was found that the longer the hydrophobic block, the better the stabilization of tetrapyrrolic drugs in monomeric form in aqueous suspensions. Of these the best performance was observed in the micelle-forming Pluronic P123. Micelle size determination by laser light scattering confirmed that particle size in stable Pluronic formulations was around 20 nm. Pluronics such as L122 formed emulsions spontaneously without the need for emulsion stabilizers; emulsions were highly stable at ambient temperatures over several days and also highly effective as potential drug delivery agents.},
	keywords = {AGGREGATION, AQUEOUS-SOLUTIONS, SURFACTANTS, THERMODYNAMICS},
	isbn = {0031-8655},
	url = {<Go to ISI>://000181598800010},
	author = {Chowdhary, R. K. and Chansarkar, N. and Sharif, I. and Hioka, N. and Dolphin, D.}
}
@article {435,
	title = {Evaluation of tetraphenyl-2,3-dihydroxychlorins as potential photosensitizers},
	journal = {Journal of Porphyrins and Phthalocyanines},
	volume = {6},
	number = {2},
	year = {2002},
	note = {ISI Document Delivery No.: 595XYTimes Cited: 15Cited Reference Count: 33},
	pages = {146-155},
	type = {Article},
	abstract = {A series of beta,beta-dihydroxychlorins derived from meso-tetraphenylporphyrins (TPPs) have been synthesized. Their in vitro cytotoxicity has been measured and compared to BPDMA (verteporfin). Under the assay conditions BPDMA had an LD50 (lethal dose to kill 50\% of cells) value of 0.007 muM (5 ng/mL). The LD50 values for the TPP derivatives varied from 1.7 x 10(-2) to 9.9 muM depending upon the substituents and their position on the phenyl groups. One example of the dihydroxychlorin prepared from unsubstituted 5,15-diphenylporphyrin was examined and this exhibited an LD50 of 2.4 x 10(-3) muM! Copyright (C) 2002 Society of Porphyrins \& Phthalocyanines.},
	keywords = {AGGREGATION, BACTERIOCHLORINS, beta, beta-dihydroxychlorins, BIODISTRIBUTION, chlorins, cytotoxicity, DERIVATIVES, photodynamic, PHOTODYNAMIC THERAPY, PHOTOPHYSICAL PROPERTIES, PHOTOSENSITIZERS, porphyrins, PROTEIN-BINDING, SENSITIZERS, therapy, TUMOR PHOTOSENSITIZERS},
	isbn = {1088-4246},
	url = {<Go to ISI>://000178134600008},
	author = {Macalpine, J. K. and Boch, R. and Dolphin, D.}
}
@article {399,
	title = {Studies of a benzoporphyrin derivative with Pluronics},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {80},
	number = {10},
	year = {2002},
	note = {ISI Document Delivery No.: 623LCTimes Cited: 14Cited Reference Count: 22},
	month = {Oct},
	pages = {1321-1326},
	type = {Article},
	abstract = {The synthetic route for the benzoporphyrin derivatives produces two regioisomers in equimolar quantities (ring A and B isomers). A derivative of the A-ring product, BPD-MA (benzoporphyrin-derivative monoacid ring A, verteporfin), has recently been approved in North America and Europe for the treatment of age-related macular degeneration. The B-ring isomers, contrary to the A-ring isomers, exhibit high aggregation in many formulations, which results in inadequate drug delivery for clinical uses. To avoid aggregation, a non-ionic surfactant polymer such as a Pluronic - poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) - may be used as a formulation excipient. The triblock polymer investigated here is designated P123 (or poloxamer 403). When used to formulate a monoacid benzoporphyrin B-ring derivative (2), a critical micelle concentration of P123 in water occurred at approximately 0.015 to 0.03\%. The apparent pK(a) of compound 2 was dependent on its concentration in P123, and decreased as the molar ratio (P123:2) increased. High concentrations of P123 and neutral pH were found to be the best conditions to maintain the drug in its monomeric form. Kinetic studies suggest that the aggregate of 2 contains several molecules, and is formed by a catalyzed self-assembly process. Samples with 1 mg mL(-1) of drug, at pH = 7.4, and 4.8\% of Pluronic showed satisfactory capacity to load and keep monomers stable. This formulation has potential PDT applications.},
	keywords = {AGGREGATION, AQUEOUS-SOLUTIONS, block copolymers, BPD, COPOLYMERS, DYNAMICS, formulation, micelles, PHOTODYNAMIC THERAPY, photodynamic therapy (PDT), PHOTOSENSITIZERS, photosensitizing drug, Pluronic, poloxamers, porphyrins, SURFACTANTS, THERMODYNAMICS},
	isbn = {0008-4042},
	url = {<Go to ISI>://000179703700007},
	author = {Hioka, N. and Chowdhary, R. K. and Chansarkar, N. and Delmarre, D. and Sternberg, E. and Dolphin, D.}
}
@article {5046,
	title = {Aggregation studies of benzoporphyrin derivative},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {79},
	number = {5-6},
	year = {2001},
	note = {ISI Document Delivery No.: 456EVTimes Cited: 11Cited Reference Count: 33},
	month = {May},
	pages = {1068-1074},
	type = {Article},
	abstract = {The photophysical properties of a ring B benzoporphyrin derivative 1,3-diene dimethylester were investigated in solution (water-DMSO mixtures). At low proportions of water in DMSO, the diester obeys Beer{\textquoteright}s law at all pH values and ionic strengths investigated. For solvent systems containing more than 30\% water, the extent of deviation from Beer{\textquoteright}s law as a function of porphyrin concentration is attributed to formation of porphyrin dimers. Dimerization equilibrium constants (Kd) have been determined in different percentage of solvent mixtures, using absorption and fluorescence spectroscopies, and were found to exhibit a linear correlation between log (Kd) and the inverse of the dielectric constant (log (Kd) = 24.6 - 1060.4 x 1/epsilon (mix)). This equation permits the calculation of Kd in mixtures of water-DMSO.},
	keywords = {AGGREGATION, benzoporphyrin, BPD, DERIVATIVE, DIMERIZATION, FLUORESCENCE, PHOTODYNAMIC THERAPY, PHOTOSENSITIZERS, porphyrins, SPECTROSCOPY, therapy},
	isbn = {0008-4042},
	url = {<Go to ISI>://000170070900079},
	author = {Delmarre, D. and Hioka, N. and Boch, R. and Sternberg, E. and Dolphin, D.}
}
@article {4440,
	title = {Light scattering study on sol-gel transformation of SiO2 colloid at extremely high concentrations},
	journal = {Clays and Clay Minerals},
	volume = {46},
	number = {2},
	year = {1998},
	note = {ISI Document Delivery No.: ZU862Times Cited: 5Cited Reference Count: 29},
	month = {Apr},
	pages = {161-166},
	type = {Article},
	abstract = {Ludox SiO(2 )sols with a reasonably uniform size of 12 nm and in the high concentration of 10 to 40 wt\% were transformed to gels by lowering the pH. The process from sol to gel, followed by light scattering, did not show a sign of fractal growth within the length scale of observation (>40 nm). Rather, a density fluctuation due to a dynamic (non-equilibrium) disorder was apparent. Together with the results of viscosity measurements, it was concluded that the process consists of 3 stages: 1) A dynamic (non-equilibrium) density fluctuation grows rapidly. 2) Such density fluctuation acquires some order. 3) The entire bulk loses fluidity and becomes a macroscopic gel.},
	keywords = {AGGREGATION, DENSITY FLUCTUATION, GLASS, GROWTH, light scattering study, PARTICLES, SILICA, SiO2 colloids, sol-gel transformation, TRANSITION, X-RAY-SCATTERING},
	isbn = {0009-8604},
	url = {<Go to ISI>://000074243100006},
	author = {Xu, Y. N. and Koga,Yoshikata}
}
@article {3118,
	title = {PORPHYRIN CHEMISTRY PERTAINING TO THE DESIGN OF ANTICANCER DRUGS .2. THE SYNTHESIS AND IN-VITRO TESTS OF WATER-SOLUBLE PORPHYRINS CONTAINING, IN THE MESO POSITIONS, THE FUNCTIONAL-GROUPS - 4-METHYLPYRIDINIUM, OR 4-SULFONATOPHENYL, IN COMBINATION WITH PHEN},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {72},
	number = {12},
	year = {1994},
	note = {ISI Document Delivery No.: QC582Times Cited: 38Cited Reference Count: 46},
	month = {Dec},
	pages = {2447-2457},
	type = {Article},
	abstract = {Water-soluble, meso-substituted porphyrins are synthesized by sulfonation or methylation of the phenyl or pyridyl groups, respectively, of some non-water-soluble functionalized porphyrins that we have recently synthesized (Can. J. Chem. 72, 1894 (1994)). Twelve anionic sulfonated and seven cationic methylpyridinium porphyrins, usually containing other functional groups (phenyl, pyridyl, nitro- and amino-phenyl), are reported on. Twelve of these porphyrins are new, and all nineteen porphyrins are characterized by H-1 NMR. UV-VIS data are presented for the isolated porphyrins, while mass spectral data are noted for selected compounds. Partition coefficients of the porphyrins in octanol-water, and the accumulation of the porphyrins in HT-29 cells of a human-cancer tumor, were measured and both were inversely related to the charges of the porphyrins. The 11 porphyrins soluble in biological buffer solutions are basically nontoxic to Chinese hamster ovary (CHO) cells in oxic or hypoxic conditions or to aerobic HT-29 cells at the 100 mu M concentration used (which is sometimes limited by solubility). No significant X-ray radiosensitization was observed for selected porphyrins toward CHO cells at the 100 mu M concentrations used, but some photosensitized cell kill (using 630 nm light) was observed using the disodium salt of 5,10-bis(4-pyridyl)-15,20-bis(4-sulfonatophenyl)porphyrin (24).},
	keywords = {AGGREGATION, CATIONIC PORPHYRIN, CELLULAR DELIVERY, COMPLEXES, DERIVATIVES, DNA, ENHANCEMENT, INTERCALATION, METALLOPORPHYRINS, PHOTOSENSITIZATION},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1994QC58200011},
	author = {Meng, G. G. and James, Brian R. and Skov, K. A. and Korbelik, M.}
}
