Journal of Andrology, Vol. 27, No. 1, January/February 2006
Copyright © American Society of Andrology
DOI: 10.2164/jandrol.05073
The Relationship Between Human Semen Characteristics and Sperm Apoptosis: A Pilot Study
ZUYING CHEN*,
RUSS HAUSER*,
,
ALEXANDER M. TRBOVICH*,
JAN L. SHIFREN*,
DAVID J. DORER*,
LINDA GODFREY-BAILEY
AND
NARENDRA P. SINGH
From the * Vincent Memorial Obstetrics &
Gynecology Service, Andrology Laboratory and In Vitro Fertilization Unit,
Massachusetts General Hospital, Boston, Massachusetts; the
Department of Environmental Health,
Occupational Health Program, Harvard School of Public Health, Boston,
Massachusetts; and the
Department of
Bioengineering, University of Washington, Seattle, Washington.
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Correspondence to: Dr Russ Hauser, Department of Environmental Health,
Occupational Health Program, Harvard School of Public Health, Building 1, Room
1405, 665 Huntington Ave, Boston, MA 02115 (e-mail:
rhauser{at}hohp.harvard.edu). |
This work was undertaken to explore the association between human semen
characteristics and apoptosis in ejaculated sperm. We collected semen samples
from 23 consecutive male patients who presented to the Andrology Laboratory at
Massachusetts General Hospital (MGH) for routine semen analysis. Sperm
concentration and motility were measured using computer-assisted sperm
analysis. Morphology was assessed using Tygerberg strict criteria. The DNA
diffusion assay was used to assess the percentage of apoptosis in ejaculated
sperm. In this assay, cells were mixed with agarose and placed into a microgel
on a microscopic slide. The cells were stained with YOYO-1 dye, and apoptotic
cells were viewed under a fluorescent microscope. Among 23 men, the mean (SD)
sperm concentration, percent motility, percent progressive motility, and
normal morphology were 125.5 (92.3) million/mL, 45.6% (22.2), 28.4% (15.2),
and 8.0 (4.6), respectively. The mean (SD) percent of apoptosis in ejaculated
sperm was 8.3% (6.2) with a range from 1.1% to 20.1%. There were inverse
associations between percent apoptosis and sperm motility (P =
.0025), progressive motility (P = .0051), and morphology with a
normal or good pattern of fertilization by Kruger strict criteria (P
= .0045), and a positive relationship between percent apoptosis and sperm tail
defects (P = .0053). In ejaculated semen, the percent sperm apoptosis
was associated with several measures of semen quality.
Key words: Semen quality, sperm motility, sperm morphology, DNA diffusion assay
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[Abstract]
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Copyright © 2006 by The American Society of Andrology.