sperm transport การใช้

• Other studies have found no connection to sperm transport or fertility.
• Fertilization bias depends on the control of sperm transport to the sperm storage organs.
• This may be achieved through inhibiting additional mating, changing sperm transport or storage, or increasing egg laying in the partner.
• Injection of non-toxic and sclerotic chemicals in the vas deferens can result in blockage of sperm transport due to scarring on the vas deferens wall.
• Insertion of an Intravasal Thread ( IVT ), also known as an Intravasal Device ( IVD ), in the vas deferens has been shown to inhibit sperm transport via mechanical obstruction and the removal of the IVT results in restored vas deferens patency.
• However, this method has differential species-specific results : in pigs, a plastic IVT had no significant effect on sperm count; in dogs, a plastic and polyethylene IVT consistently blocked sperm transport during the experimental period and removal of the device restored sperm transport after a period of two weeks; and in human subjects, a urethane-coated nylon IVT resulted in significantly reduced sperm count but could not guarantee absolute sterility at the same rate as a vasectomy.
• However, this method has differential species-specific results : in pigs, a plastic IVT had no significant effect on sperm count; in dogs, a plastic and polyethylene IVT consistently blocked sperm transport during the experimental period and removal of the device restored sperm transport after a period of two weeks; and in human subjects, a urethane-coated nylon IVT resulted in significantly reduced sperm count but could not guarantee absolute sterility at the same rate as a vasectomy.