搜索结果: 76-83 共查到“性科学 human sperm”相关记录83条 . 查询时间(0.031 秒)
Effect of Azorellanone, a Diterpene From Azorella yareta Hauman, on Human Sperm Physiology
Sperm–zona binding cyclic terpenes intracellular Ca2+ protease activity
2008/12/19
Previous studies have shown that cyclic terpenes extracted from plants decrease sperm motility and concentration in rats. In this work, we studied the effect 13--hydroxy-7-oxoazorellano (azorellan...
The Human Sperm Head：A Key for Successful Fertilization
Fertilization rates in vitro fertilization computer-assisted sperm analysis acrosome vacuoles sperm morphology
2008/12/19
In order to examine the predictive value of determining the sperm head shape, the acrosomal size, the presence of acrosomal vacuoles, and the challenged acrosome reaction (AR) on the outcome of a stan...
Human Sperm Survival Assay as a Bioassay for the Assisted Reproductive Technologies Laboratory
Human Sperm Survival Assay Bioassay Assisted Reproductive Technologies Laboratory
2008/12/18
Recently, Carrell and Cartmill (2002) provided a chronology of government oversight and intervention in the provision of clinical reproductive medicine laboratory services. They also outlined the adve...
Human Sperm Survival Assay as a Bioassay for the Assisted Reproductive Technologies Laboratory
Human Sperm Survival Assay Bioassay Assisted Reproductive Technologies Laboratory
2008/12/19
Recently, Carrell and Cartmill (2002) provided a chronology of government oversight and intervention in the provision of clinical reproductive medicine laboratory services. They also outlined the adve...
Activation of Protein Kinase A During Human Sperm Capacitation and Acrosome Reaction
Phosphodiesterases cyclic adenosine monophosphate calcium ionophore A23187 signal transduction
2008/12/15
Spermatozoa undergo a variety of changes during their life that are prerequisites to their maturation and ability to fertilize eggs. Mammalian sperm capacitation and acrosome reaction are regulated by...
Presence of Matrix Metalloproteinases and Tissue Inhibitor of Matrix Metalloproteinase in Human Sperm
Fertilization oligo-terato-asthenospermia infertility
2008/12/15
The matrix metalloproteinases (MMPs) are a family of proteolytic enzymes that degrade protein components of the extra-cellular matrix. The necessity of breakdown of physical barriers in the fertilizat...
Evaluation of human sperm function after repeated freezing and thawing
Evaluation human sperm function repeated freezing thawing
2008/12/2
Sperm storage via freezing has been useful for men who have difficulty masturbating during assisted reproductive technology (ART) programs and before impotency caused by chemotherapy, vasectomy, and...
Real-time fine morphology of motile human sperm cells is associated with IVF-ICSI outcome
Real-time fine morphology motile human sperm cells IVF-ICSI outcome
2008/12/1
The aim of the present prospective study was to determine whether subtle sperm morphological characteristics affect the outcome of intracytoplasmic sperm injection (ICSI), and if so, to identify those...