Recently, the techniques of testicular sperm extraction (TESE) and intracytoplasmic sperm injection (ICSI) have made it possible to help men with azoospermia or severe oligozoospermia
to achieve successful fertilizations and pregnancies (10).
Y chromosome microdeletions were detected in roughly 12.1% (95% CI, 6.5-21.5) of Iranian infertile men with azoospermia and severe oligozoospermia
Ring chromosome may affect the AZF regions of Y chromosome resulting in testicular failure with azoospermia or oligozoospermia
with less than normal morphological features, was grouped as oligoteratozoospermia (OAT) and when all sperm characteristics were abnormal, the group was oligoasthenoteratozoospermia (SOAT).
Moreover, TNFR-1 36G allele is more found in oligozoospermia
associated to a decrease of sperm concentration .
Em uma meta-analise incluindo 21 estudos, resultando em uma amostra de 13077 homens frequentadores gerais de clinicas de fertilidade, comparado com homens eutroficos, os obesos com graus menores (IMC 30-39,9 kg/[m.sup.2]) e obesos morbidos tiveram mais chance de terem oligozoospermia
ou azoospermia (OR 1,28 e 2,04 respectivamente), assim aumentando a prevalencia de tais parametros (Sermondade e colaboradores, 2013).
Asthenozoospermia is more prevalent and important than oligozoospermia
in infertile males with KYDS .
Zukin, "Chromosomal abnormalities in patients with oligozoospermia
and non-obstructive azoospermia," Journal of Assisted Reproduction and Genetics, vol.
A comparison of the frequency of sperm chromosome abnormalities in men with mild, moderate, and severe oligozoospermia
. Biol Reprod 69:535-539.
Light micrograph of sildenafil treated rabbit demonstrating oligozoospermia
Analysis of the relationship between defective sperm function and the generation of reactive oxygen species in cases of oligozoospermia
. J Androl.
Main causes of male infertility include low sperm count (azoospermia and oligozoospermia
), poor vitality (necrozoospermia), low motility (asthenozoospermia), low DNA integrity, and abnormal sperm morphology (teratospermia) (4, 5).