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Spirulina (Arthrospira) Protects Against Cadmium-Induced Teratogenic Damage in Mice
Norma Paniagua-Castro,Gerardo Escalona-Cardoso,Dolores Hernández-Navarro,Ricardo Pérez-Pastén,Germán Chamorro-Cevallos 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.4
The role of Spirulina (Arthrospira) in preventing cadmium (Cd) teratogenicity in ICR mice was studied. Cd was administered intraperitoneally to female mice at 1.5 mg/kg on gestation day (GD)-7, and Spirulina was given by peroral (intragastric) administration at 62.5, 125, 250, or 500 mg/kg from GD-0 through GD-17 (the day when animals were sacrificed). Because among the mechanisms suggested to account for reproductive damage are oxidative stress and lipoperoxidation, embryonic hydroperoxides were also determined. Treatment with Spirulina at the three highest doses significantly decreased the frequency of fetuses with exencephaly, micrognathia, and skeletal abnormalities induced by Cd. Furthermore, Spirulina treatment significantly and dose-dependently decreased lipid peroxidation, which was dramatically increased by administration of the metal. The results of the present study clearly point to the therapeutic potential of Spirulina in Cd-induced teratogenicity and probably through its antioxidant activity.
Alain Tundidor-Camba,Claudio A. Terraza,Luis H. Tagle,Deysma Coll,Pablo Ortiz,Germán Pérez,Ignacio A. Jessop 한국고분자학회 2017 Macromolecular Research Vol.25 No.3
Aromatic polyimides (PIs) containing a cyclopropylamide moiety as bulky polar pendant group were prepared in high yield and were structurally characterized. Polyimides containing 4,4’-hexafluoroisopropyliden diphthalic anhydride and bis(3,4-dicarboxyphenyl)dimethylsilane anhydride were soluble in aprotic polar organic solvents, while those PI derived from benzophenone-3,3′,4,4′-tetracarboxylic dianhydride with a keto central unit was insoluble. The relationship between bulky pendant group and the nature of the central moiety of the dianhydride monomer respect to the thermal properties of the PIs was studied. All PIs were thermally stable showing thermal decomposition temperature with the 10% weight loss (TDT10%) between 425-480 ºC. The glass transition temperature (Tg) values range between 265 and 315 oC. Mechanical properties from films of a selected PI were tested too.