Related Experiment Video
Updated: May 26, 2026
06:11
Monitoring Blood Glucose in Mouse Offspring After Intracytoplasmic Sperm Injection
Published on: May 17, 2024
Advanced paternal age and reproductive outcome
Zofnat Wiener-Megnazi1, Ron Auslender, Martha Dirnfeld
1Fertility and IVF Unit, Department of Obstetrics and Gynecology, Carmel Medical Center, the Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel.
Asian Journal of Andrology
|December 14, 2011
Summary
Parenthood is being delayed by both men and women. This review focuses on how advanced paternal age impacts reproductive outcomes, an area less studied than maternal aging.
Area of Science:
- Reproductive Medicine
- Human Reproduction
- Gerontology
Background:
- Increasing trend of delayed parenthood in both men and women.
- Maternal age effects on fertility and offspring are well-documented.
- Paternal age's impact on reproductive outcomes requires further investigation.
Purpose of the Study:
- To review current literature on the effects of paternal age on reproductive outcomes.
- To highlight the significance of male reproductive aging.
Main Methods:
- Literature review of updated and relevant studies.
- Analysis of research on paternal age and fertility.
- Evaluation of data on offspring outcomes related to paternal age.
Main Results:
- Advanced paternal age is associated with various reproductive challenges.
- Specific risks linked to older fathers are identified.
- The review synthesizes existing evidence on male reproductive aging.
Conclusions:
- Paternal age is a significant factor in reproductive success.
- Further research and clinical attention are warranted for male reproductive aging.
- Understanding paternal age effects is crucial for comprehensive fertility counseling.
Related Concept Videos
01:21Nondisjunction
Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers. Nondisjunction is common during anaphase I or anaphase II of meiosis. Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold sister...
02:07Oogenesis
In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
01:23Infertility in Males
Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
01:27Pharmacodynamics in Geriatric Patients: Effects of Age
Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
01:41Spermatogenesis
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male reproductive...
03:09Meiosis I
Meiosis is the division of a diploid cell into haploid cells forming sperm and eggs in animals through differentiation. Meiosis I is the first stage of meiosis, where the genetic recombination of homologous chromosomes and the reduction of the ploidy level by half occurs.
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...