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低温对玉米幼苗细胞保护酶活性及胞质质量参数的影响 被引量:17
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作者 张敬贤 李俊明 +3 位作者 崔四平 魏建昆 张海明 耿庆汉 《华北农学报》 CSCD 北大核心 1993年第3期9-12,共4页
用4℃低温处理玉米白交系幼苗二天发现细胞保护酶活性和胞质质量发生有规律的变化:抗冷力弱的自交系过氧化氢酶、过氧化物酶、超氧物歧化酶活性降低,原生质层透性亦降低,但膜脂过氧化水平显著增高;抗冷力强的自交系细胞保护酶活性增高,... 用4℃低温处理玉米白交系幼苗二天发现细胞保护酶活性和胞质质量发生有规律的变化:抗冷力弱的自交系过氧化氢酶、过氧化物酶、超氧物歧化酶活性降低,原生质层透性亦降低,但膜脂过氧化水平显著增高;抗冷力强的自交系细胞保护酶活性增高,膜脂过氧化水平未发生明显变化,但原生质层透性和和滞度显著增加.这一结果表明保护酶活性和胞质质量与玉米抗冷性密切相关. 展开更多
关键词 低温 玉米 自交系 保护酶 胞质质量
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Esophagus and regenerative medicine 被引量:4
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作者 Ricardo Londono Blair A Jobe +1 位作者 Toshitaka Hoppo Stephen F Badylak 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第47期6894-6899,共6页
In addition to squamous cell carcinoma,the incidence of Barrett's esophagus with high-grade dysplasia and esophageal adenocarcinoma is rapidly increasing worldwide.Unfortunately,the current standard of care for es... In addition to squamous cell carcinoma,the incidence of Barrett's esophagus with high-grade dysplasia and esophageal adenocarcinoma is rapidly increasing worldwide.Unfortunately,the current standard of care for esophageal pathology involves resection of the affected tissue,sometimes involving radical esophagectomy.Without exception,these procedures are associated with a high morbidity,compromised quality of life,and unacceptable mortality rates.Regenerative medicine approaches to functional tissue replacement include the use of biological and synthetic scaffolds to promote tissue remodeling and growth.In the case of esophageal repair,extracellular matrix(ECM) scaffolds have proven to be effective for the reconstruction of small patch defects,anastomosis reinforcement,and the prevention of stricture formation after endomucosal resection(EMR).More so,esophageal cancer patients treated with ECM scaffolds have shown complete restoration of a normal,functional,and disease-free epithelium after EMR.These studies provide evidence that a regenerative medicine approach may enable aggressive resection of neoplastic tissue without the need for radical esophagectomy and its associated complications. 展开更多
关键词 Esophageal repair Biomaterial mediated esophageal repair Extracellular matrix Extracellular matrix scaffold
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