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Ultraviolet damages sperm mitochondrial function and membrane integrity in the sea urchin Anthocidaris crassispina.

Abstract：

:Effects of ultraviolet A (UVA) and ultraviolet B (UVB) on mitochondrial function and membrane integrity of sea urchin sperm were investigated using flow cytometry and fluorescent probes. Both UVA and UVB impaired sperm mitochondrial function in a dose-dependent manner. Covariance analysis further showed that the slopes of change in mitochondrial function in relation to UVA and UVB were significantly different, suggesting that the modes of action were different. UVA did not affect membrane integrity, while membrane integrity showed a linear reduction with increasing UVB doses. Sperm mitochondria function showed significant positive correlations with sperm motility and subsequent fertilization success. Overall, our results showed that both UVA and UVB could decrease sperm motility and fertilization success through impairment of mitochondrial function, whereas UVB alone could cause additional damage through impairing the functional integrity of sperm membrane. Mitochondrial function of sperm may also offer a reliable ecotoxicological biomarker for predicting fertilization success in urchins.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Lu XY,Wu RS

doi

10.1016/j.ecoenv.2004.12.012

keywords:

subject

Has Abstract

pub_date

2005-05-01 00:00:00

pages

53-9

issue

1

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(04)00256-8

journal_volume

61

pub_type

杂志文章

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