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2014 ; 31
(6
): 725-9
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English Wikipedia
Study of the effect of varicocelectomy on sperm proteins expression in patients
with varicocele and poor sperm quality by using two-dimensional gel
electrophoresis
#MMPMID24760720
Hosseinifar H
; Sabbaghian M
; Nasrabadi D
; Modarresi T
; Dizaj AV
; Gourabi H
; Gilani MA
J Assist Reprod Genet
2014[Jun]; 31
(6
): 725-9
PMID24760720
show ga
PURPOSE: To compare proteomic profiles of spermatozoa from patients with
varicocele and poor sperm quality before and after varicocelectomy. METHODS: This
work was designed as a prospective and observational study. The study was based
on 20 men with varicocele grade 3 and poor sperm quality undergoing
varicocelectomy at the Fertility Unit of Royan institute in 2009. Two semen
samples were collected, one before varicocelectomy and the other after surgery.
Protein separation was done by two-dimensional protein electrophoresis, and
analyzed by gel densitometry and mass spectrometry. Differential sperm protein
expression levels were measured by gel densitometry. RESULTS: Comparison of the
sperm parameters showed that sperm motility and concentration were increased
after varicocelectomy. At the level of protein, a total of 3 protein spots were
identified whose expression was significantly lower in sperm samples before
varicocelectomy compared with after surgery including heat shock protein A5
(HSPA5), superoxide dismutase 1 (SOD1) and ?-subunit of the catalytic core of
mitochondrial adenosine triphosphate synthase (ATP5D). CONCLUSIONS: High grade
varicocoele affects sperm protein expression presumably because of increasing
testicular temperature. These proteins play essential roles in sperm production,
DNA integrity protection, and sperm motility. This novel study demonstrates that
varicocelectomy can improve both sperm quality and proteins expression.