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好氧固氮微生物的防氧保护作用
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作者 范玉贞 《衡水师专学报》 1999年第3期73-75,共3页
好氧固氮微生物需要通过有氧呼吸合成ATP,但是固氮作用却是在厌氧条件下的还原过程。好氧固氮细菌通过细胞结构保护、呼吸保护、构象保护及防氧屏障等保护固氮酶的活性,从而解决了好氧呼吸与厌氧固氮之间的矛盾,并使好氧固氮微生物在有... 好氧固氮微生物需要通过有氧呼吸合成ATP,但是固氮作用却是在厌氧条件下的还原过程。好氧固氮细菌通过细胞结构保护、呼吸保护、构象保护及防氧屏障等保护固氮酶的活性,从而解决了好氧呼吸与厌氧固氮之间的矛盾,并使好氧固氮微生物在有氧环境中能进行有氧呼吸与厌氧固氮。 展开更多
关键词 微生物 呼吸 固氮 防氧保护 固氮微生物 细胞结构保护 呼吸保护
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A novel bone marrow targeted gadofullerene agent protect against oxidative injury in chemotherapy 被引量:1
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作者 张莹 舒春英 +7 位作者 甄明明 李杰 于童 贾旺 李雪 邓睿君 周悦 王春儒 《Science China Materials》 SCIE EI CSCD 2017年第9期866-880,共15页
Chemotherapy as an effective cancer treatment technique has been widely used in tumor therapy. However, it is still a challenge to overcome the serious side effects of chemotherapy, especially for its myelotoxicity. H... Chemotherapy as an effective cancer treatment technique has been widely used in tumor therapy. However, it is still a challenge to overcome the serious side effects of chemotherapy, especially for its myelotoxicity. Here we report a novel strategy using the water soluble gadofullerene nanocrystals(GFNCs) to protect against chemotherapy injury in hepatocarcinoma bearing mice, which was induced by the commonly chemotherapeutic agent cyclophosphamide(CTX).The GFNCs were revealed to specifically accumulate in the bone marrow after intravenously injecting to mice and they exhibited excellent radical scavenging function, resulting in a prominent increase of mice blood cells and pathological improvements of the primary organs in the GFNCs(15 mg kg-(-1))treated mice after the CTX(60 mg kg-(-1)) therapy. Moreover,the GFNCs maintained and even strengthened the antineoplastic activity of the CTX agent. Therefore, the GFNCs would be the promising chemoprotective agents in chemotherapy based on their high efficiency, low toxicity and metabolizable property. 展开更多
关键词 gadofullerene nanocrystals chemopreventive agent MYELOSUPPRESSION radical scavenging chemotherapy drug
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