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Fertil Steril. 2006 Jan;85(1):121-7.

Dimensional assessment of X-bearing and Y-bearing haploid and disomic human sperm with the use of fluorescence in situ hybridization and objective morphometry.

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1
Department of Obstetrics and Gynecology, Szent-Gy├Ârgi University School of Medicine, Szeged, Hungary.

Abstract

OBJECTIVE:

To explore the dimensional attributes of haploid and disomic X-bearing and Y-bearing spermatozoa.

DESIGN:

Morphometric evaluation of more than 2,000 X-bearing and Y-bearing spermatozoa after identification of the genotype with fluorescence in situ hybridization.

SETTING:

Academic clinical and research andrology laboratory.

MAIN OUTCOME MEASURE(S):

Sperm head area, perimeter, long axis, short axis, shape factor, elliptical form factor (long axis/short axis), and tail length.

RESULT(S):

We found no differences in dimensions or dimensional distributions between X-bearing and Y-bearing spermatozoa, whether in the native or the decondensed state, or in oligozoospermic or normozoospermic men. There were inconsistent differences and a 70% overlap in the dimensions of haploid and disomic spermatozoa. The other 30% of sperm with disomic nuclei were either smaller or larger compared to haploid spermatozoa.

CONCLUSION(S):

There are no differences, or distinguishing characteristics, in dimensions or dimensional distributions between X-bearing and Y-bearing spermatozoa. Dimensional attributes do not discriminate between dysomic and haploid spermatozoa.

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