2015
DOI: 10.4067/s0717-75262015000600009
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Estrés oxidativo: ¿un estado celular defectuoso para la función espermática?

Abstract: RESUMENEn los organismos vivos, las cantidades de radicales libres y especies reactivas del oxígeno (ROS) son controladas por un complejo sistema de homeostasis, capaz de mantener niveles fisiológicos de ROS necesarios para el funcionamiento y regulación de algunas biomoléculas. Paralelamente, los organismos poseen sistemas bioquímicos de protección contra el estrés oxidativo, que consiste en el desbalance entre la producción de especies químicas altamente reactivas y las defensas antioxidantes de la célula. D… Show more

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Cited by 5 publications
(3 citation statements)
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References 59 publications
(71 reference statements)
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“…Oxidative stress is a situation in which the cells are exposed to a prooxidant environment that can affect the homeostasis of the redox state. In parallel, the defensive antioxidant mechanisms were developed to counteract the action of reactive oxygen species (ROS) overgeneration, resulting in a tissue vulnerability against the action of these reactive molecules, which seem to participate in some degenerative processes of biological systems [ 6 ].…”
Section: Introductionmentioning
confidence: 99%
“…Oxidative stress is a situation in which the cells are exposed to a prooxidant environment that can affect the homeostasis of the redox state. In parallel, the defensive antioxidant mechanisms were developed to counteract the action of reactive oxygen species (ROS) overgeneration, resulting in a tissue vulnerability against the action of these reactive molecules, which seem to participate in some degenerative processes of biological systems [ 6 ].…”
Section: Introductionmentioning
confidence: 99%
“…Reactive oxygen species production is related to sperm physiology due to its role in various sperm processes, including maturation, capacitation, hyperactivation, acrosome reaction and sperm–oocyte interaction (Agarwal et al., ; Du Plessis, Agarwal, Halabi, & Tvrda, ; Ghareeb & Sarhan, ; Kothari, Thompson, Agarwal, & du Plessis, ; Mayorga Torres, Camargo, Cadavid, Maya, & Walter, ). Once spermatozoa lose their antioxidant capabilities, they become highly susceptible to ROS attack, especially due to the large quantities of polyunsaturated fatty acids present in their plasma membrane (Aitken & Roman, ; Aitken, Smith, Jobling, Baker, & De Iuliis, ; Aitken, Wingate, De Iuliis, & McLaughlin, ).…”
Section: Introductionmentioning
confidence: 99%
“…La movilidad y la morfología espermática se han relacionado directamente con los casos de infertilidad masculina 6 ; estudios recientes han demostrado que estas anomalías en los parámetros convencionales están asociadas a disfunciones fisiológicas en los espermatozoides, como la producción excesiva de especies reactivas del oxígeno, las cuales alteran el balance entre las moléculas oxidantes y las defensas antioxidantes celulares, desencadenando procesos relacionados con estrés oxidativo, como la peroxidación lipídica y el daño en la cromatina espermática 7,8 .…”
Section: Introductionunclassified