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José M. Matés José M. Segura Cristina Pérez-Gómez Maite Asenjo Miguel Blanca 《Research on Chemical Intermediates》2001,27(3):297-304
Although oxidative status has been related to several pathophysiologic processes, there is not a well established connection between antioxidant defense and allergy. An imbalance of reactive oxygen species is related to inflammation in allergic diseases. Antioxidant enzymes are involved in cell detoxification. This primary antioxidant defence system might work against allergic's symptoms. In this work, arguments in favour of the potential of free radical scavengers in antioxidant therapy for allergic patients are discussed. 相似文献
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本文利用顺磁稀土离子的诱导化学位移变化的性质, 研究了多官能团配体谷胱甘肽(GSH)与稀土的配位作用。在水溶液中GSH通过分子两端的羧基负离子与稀土形成遥爪配位结构。谷氨酸和甘氨酸羧基与Eu^3+的配位稳定常数分别为12.5±0.1L.mol和100.0±0.5L/mol。从13^C化学位移的pH变化曲线求得谷氨酸和甘氨酸羧基解离的pK~a值分别为2.20±0.02和3.50±0.04。对Dy^3+、Ho^3+、Er^3+、Tm^3+和Yb^3+作用下, GSH的13^C位移数据分析表明, 配体与这些离子形成同构的配合物, 分子两端羧基均可能以双齿形式与稀土配位。 相似文献
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