期刊
BIOLOGY OF REPRODUCTION
卷 80, 期 2, 页码 343-349出版社
OXFORD UNIV PRESS INC
DOI: 10.1095/biolreprod.108.073395
关键词
aging; delayed fatherhood; gamete biology; long-term effects; offspring
资金
- Ministerio de Ciencia y Tecnologia [BFI2003-04761]
- Fondo Europeo de Desarrollo Regional (FEDER)
- Instituto de Salud Carlos III, Fondo de Investigacion Sanitaria, Ministerio de Sanidad y Consumo [ISCIII2006-PI0405]
- Generalitat Valenciana, Conselleria d'Empresa, Universitat i Ciencia [GV2004-B-206, AE/2007/001]
This study aims to analyze, in mice, the long-term effects of delayed fatherhood on reproductive fitness and longevity of offspring. Hybrid parental-generation (F-0) males, at the age of 12, 70, 100, and 120 wk, were individually housed with a randomly selected 12-wk-old hybrid female. The reproductive fitness of first-generation (F-1) females was tested from the age of 25 wk until the end of their reproductive life. In F-1 males, the testing period ranged from the age of 52 wk until death. Breeding F-1 females from the 120-wk group displayed interbirth intervals longer than females from the 12-, 70-, and 100-wk groups. Furthermore, F-2 pups begotten by F-1 studs exhibited weaning weights lower than pups from the 12- and 70-wk groups. Offspring from the 120-wk group exhibited shorter survival times associated with lower incidence of tumorigenesis and higher loss of body weight when approaching death when compared to F-1 offspring from younger age-groups. The results indicate that advanced paternal age at conception has negative long-term effects on reproductive fitness and longevity of offspring in the mouse model.
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