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'https://openalex.org/W1995423802', 'https://openalex.org/W1977788452', 'https://openalex.org/W13330076'], 'abstract_inverted_index': {'有機ゲルマニウム化合物,とくにBis(2-carboxyethylgermanium)trioxide[(GeCH2CH2COOH)2O3,Ge-132],Bis(2-amino-2-carboxy-1-phenylethylgermanium)trioxide[GeCHPhCH(NH2)COOH2O3,Ge-373],Bis(2-amino-2-carboxyethylgermanium)trioxide[GeCH2CH(NH2)COOH]2O3,Ge385]の生理活性をinvitroモデル実験系および実験動物(糖尿病ラット)に投与して検討した.Ge-373は,DNAを断片化する作用を示した.この事実から,有機ゲルマニウム化合物が糖に対して特殊な作用を発揮するのではないかと考え,MaiUard反応(non-enzymaticamino-carbonylreaction)における効果の検討を行った.種々アミン酸とリボースを混合しAmadori転移およびAdvancedGlycationEndproducts(AGE)の生成を測定する実験系に,Ge-132またはGe-385を加え,AGE形成を蛍光分光光度計により測定した.有機ゲルマニウム化合物は,Amadori転移産物の形成は阻害しなかったが,AGEの形成を抑制した.とくにGe-385は,いったんできたAGEを可逆的に減少させる作用を発揮した.Streptozotocin(STZ)により誘発した糖尿病ラットにGe-132またはGe-385を100mg/kg/d経口投与し,糖尿病合併症に対する効果を観察した.Glycatedalbumin,fructosamineの低下,レンズ混濁の低下が観察された.糖と有機ゲルマニウム化合物,とくにGe-132との相互作用の様子をNuclearMagneticResonance(NMR)を用いて解析した.Ge-132は糖の1および2位のヒドロキシル基と反応し,糖一有機ゲルマニウム複合体を形成することが判明した.この反応がAmadori転移以降の反応を阻害し,AGEの可逆的可溶化を誘導する化学分子論的機序であろうと考えられる.': [0]}, 'cited_by_api_url': 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