Frugivory is associated with low measures of plasma oxidative stress and high antioxidant concentration in free-ranging bats
Frugivory is associated with low measures of plasma oxidative stress and high antioxidant concentration in free-ranging bats
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DOI：
10.1007/s00114-014-1155-5
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发表时间：
2014-04-01
影响因子：
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通讯作者：
Voigt, Christian C.
中科院分区：
文献类型：
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作者：
Schneeberger, Karin;Czirjak, Gabor A.;Voigt, Christian C.
氧化应激反应性的前抗氧化剂和中和性的抗氧化剂之间的不平衡会破坏细胞结构，并损害与健康相关的特征，如寿命和繁殖。理论预测，以水果等抗氧化剂含量高的饮食喂养应该减少氧化应激;然而，在自由放养的哺乳动物中没有支持这一观点。蝙蝠涵盖了各种各样的生态位，因此，我们问的措施，氧化应激是较低的物种与水果饮食。我们测量了活性氧代谢产物（ROM）代表总的促氧化剂和抗氧化剂在血浆中的33个新热带蝙蝠物种。水果饮食的物种表现出最低水平的ROM和最高浓度的抗氧化剂，其次是杂食性和动物性物种。潜在地，食果物种在食物中摄入更多的抗氧化剂，因此能够中和比不以水果为食的物种更多的促氧化剂，从而导致整体较低的氧化应激水平。因此，我们第一次表明，氧化应激的措施根据自由放养的哺乳动物的饮食。
Oxidative stress-an imbalance between reactive pro- and neutralising antioxidants-damages cell structures and impairs fitness-relevant traits such as longevity and reproduction. Theory predicts that feeding on diets with high antioxidant content such as fruits should reduce oxidative stress; however, there is no support of this idea in free-ranging mammals. Bats cover a large variety of ecological niches, and therefore, we asked if measures of oxidative stress are lower in species with fruit diets. We measured reactive oxygen metabolites (ROM) representing total pro-oxidants produced and antioxidants in the plasma of 33 Neotropical bat species. Species with a fruit diet showed the lowest level of ROM and the highest concentration of antioxidants, followed by omnivorous and animalivorous species. Potentially, frugivorous species ingest more antioxidants with food and thus are able to neutralise more pro-oxidants than species not feeding on fruits, resulting in an overall lower level of oxidative stress. We therefore showed for the first time that measures of oxidative stress vary according to diets in free-ranging mammals.