Changes in DNA fragmentation during sperm preparation for intracytoplasmic sperm injection over time  

Oleh:

Rougier, Natalia ; Uriondo, Heydy ; Papier, Sergio ; Checa, Miguel Angel ; Sueldo, Carlos

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Fertility and Sterility (keterangan: ada di ClinicalKey) vol. 100 no. 01 (Jul. 2013), page 69-74.
Topik: Sperm DNA fragmentation; PVP; hyaluronic acid

Ketersediaan

Perpustakaan FK Nomor Panggil: F02.K.2013.01 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Objective To compare the DNA fragmentation of semen samples established by terminal deoxynucleotide transferase–mediated dUTP nick-end labeling (TUNEL) after incubation in polyvinylpyrrolidone (PVP) and hyaluronic acid (HA) for different time periods. Design Comparative prospective study. Setting Center for reproductive medicine. Patient(s) Twenty-seven semen samples from infertile patients. Intervention(s) None. Methods Semen analysis and DNA fragmentation assays (TUNEL) were performed. Two groups were established: A) normal TUNEL (<20%); and B) Abnormal TUNEL (=20%). TUNEL was performed in neat (T0), postgradient (TG), 1-hour postgradient (TG1), and 2-hour postgradient (TG2) samples and in TG2 samples after 0.5, 1.0, and 1.5 hours of incubation in PVP or HA. Result(s) TUNEL levels were significantly reduced after gradient separation compared with neat values. In group A, TUNEL levels were significantly higher in the TG2 + 1.5 hours in PVP and HA samples but did not reach abnormal levels. In group B, TUNEL levels were significantly higher in the TG2 + 1 hour in PVP and HA samples. Conclusion(s) Sperm DNA fragmentation significantly decreased after centrifugation gradient, regardless of the initial levels of the sample. Samples with TUNEL =20% were more susceptible to a significant increase in DNA fragmentation over time, with similar increases being observed over time for samples that were incubated in HA or PVP. These data may be relevant for sperm preparation for intracytoplasmic sperm injection.

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