Evaluation of sperm head shape at high magnification revealed correlation of sperm DNA fragmentation with aberrant head ellipticity and angularity  

Oleh:

Utsuno, Hiroki ; Oka, Kenji ; Yamamoto, Ayako ; Shiozawa, Tanri

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Fertility and Sterility (keterangan: ada di ClinicalKey) vol. 99 no. 06 (May 2013), page 1573-1580.
Topik: Elliptic Fourier analysis; IMSI; large nuclear vacuoles; sperm DNA fragmentation; sperm head shape

Ketersediaan

Perpustakaan FK Nomor Panggil: F02.K.2013.04 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Objective To test for an association between DNA fragmentation and head shape at high magnification in fresh motile spermatozoa. Design Observational study. Setting Academic tertiary care center. Patient(s) A total of 60 men in our assisted reproductive program. Intervention(s) Quantifying sperm head shape using elliptic Fourier analysis, and detecting DNA fragmentation by use of a terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay. Main Outcome Measure(s) Correlation between percentage of spermatozoa with abnormal head shape and percentage of DNA fragmentation. Result(s) Elliptic Fourier analysis decomposed sperm head shapes into four quantitative parameters: ellipticity, anteroposterior (AP) symmetry, lateral symmetry, and angularity. The DNA fragmentation was statistically significantly correlated with abnormal angularity, and moderately with abnormal ellipticity but not with abnormal AP symmetry or lateral symmetry. Forward stepwise multiple logistic regression analysis revealed a statistically significantly higher percentage of DNA fragmentation in spermatozoa with abnormal ellipticity and abnormal angularity than in spermatozoa with normal-shaped head (6.1% and 5.4% vs. 2.8%). Spermatozoa with large nuclear vacuoles also correlated with sperm DNA fragmentation, and had a statistically significantly higher percentage of DNA fragmentation (4.7%). Conclusion(s) Among the morphologic features of the sperm head, abnormal ellipticity, angularity, and large nuclear vacuoles are associated with DNA fragmentation.

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