Journal
EXPERIMENTAL GERONTOLOGY
Volume 45, Issue 6, Pages 435-441Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.exger.2010.03.010
Keywords
Ovary; Ovariectomized; Ovarian transplantation; Body-weight; Rate of gain; Rate of loss; Gonadal influence; Life span; Weight gain; Weight loss
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Funding
- NIA/NIH [PO1 AG022500-01, PO1 AG08761-10]
- Center for the Economics and Demography of Aging, UC Berkeley
- American Physiological Society
- University of California
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Previously we reported that prepubertally ovariectomized mice that received young, transplanted ovaries at a postreproductive age displayed a 40% increase in life expectancy. To study this increase in life expectancy in greater detail, prepubertally ovariectomized and ovary-intact CBA/J mice underwent ovarian transplantation at 11 months with 60-day-old ovaries or a sham surgery. Life span was significantly increased in transplant recipients. Body-weight changes of mice in each group were measured from the time of surgery (11 months) to death. Neither ovariectomy nor ovarian transplantation influenced the amount of peak body-weight attained or body-weight retained at death. However, the time (days) to peak body-weight was decreased by ovariectomy and ovarian transplant recipients displayed a trend toward an increase in time to peak weight. In addition, ovarian transplantation decreased the rate of weight loss to death. These results demonstrate that ovarian status, examined by means of ovariectomy and ovarian transplantation, clearly influenced the rate of weight change, but not the total amount of weight gain or loss in female mice. (C) 2010 Elsevier Inc. All rights reserved.
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