Related Experiment Video
Updated: Oct 10, 2025

08:48
Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects
Published on: April 21, 2022
2.8K
Chlamydia trachomatis Infection: its relation to semen parameters and sperm DNA integrity
Azza M EzzEl-Din1, Hisham D Gaber2, Dalia T Kamal1
1Department of Clinical Pathology, Faculty of Medicine, Assiut University, Assiut, Egypt.
The Egyptian Journal of Immunology
|December 9, 2021
Summary
Chlamydia trachomatis (CT) infection significantly reduces sperm quality and increases DNA fragmentation and reactive oxygen species (ROS) in infertile men. These effects are more pronounced in patients with leukocytospermia.
Area of Science:
- Reproductive Medicine
- Infectious Diseases
- Andrology
Background:
- Chlamydia trachomatis (CT) is a common sexually transmitted infection.
- CT infection can impact male reproductive health.
- Semen quality and sperm DNA integrity are crucial for male fertility.
Purpose of the Study:
- To investigate the effects of CT infection on semen quality.
- To assess the impact of CT infection on sperm DNA integrity.
- To evaluate the relationship between CT infection, reactive oxygen species (ROS), and leukocytospermia.
Main Methods:
- Study included 60 infertile male patients with CT infection and 25 controls.
- Diagnosis of CT infection confirmed by ELISA for CT IgA and detection of CT plasmid DNA.
- Evaluated semen parameters, ROS levels, sperm DNA fragmentation, and pus cell count.
Main Results:
- CT patients showed significantly decreased sperm concentration, mobility, and viability compared to controls.
- Elevated ROS levels and increased sperm DNA fragmentation were observed in CT patients (P<0.05).
- Leukocytospermia was associated with higher ROS and DNA fragmentation in CT patients (P<0.05).
Conclusions:
- CT infection negatively impacts male semen quality and sperm DNA integrity.
- Increased ROS and DNA fragmentation are key consequences of CT infection, particularly in cases of leukocytospermia.
- CT infection poses a significant risk factor for male infertility.
Related Concept Videos
Sexually Transmitted Infections
452
Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
452
Bacterial Phylum Chlamydiae
153
The phylum Chlamydiae or Chlamydiota is composed of a single order, Chlamydiales. This phylum consists entirely of obligate intracellular parasites that infect eukaryotic hosts. While human pathogens within this group have been studied extensively, the phylum encompasses many species capable of interacting with various eukaryotic organisms. Members of Chlamydiae are typically small cocci, approximately 0.5 μm in diameter, and exhibit a distinctive developmental cycle. As is characteristic...
153
Sperm Structure and Semen Composition
5.9K
During ejaculation, males release around 2-5 milliliters of semen, which is a complex mixture of mature sperm and various fluids produced by accessory glands. The mature sperm cells measure approximately 60 micrometers in length and consist of a head, neck, midpiece, and tail. The head is flattened and tapered, measuring about 4 to 5 micrometers in length. It contains a nucleus with condensed chromosomes and an acrosome, a cap-like structure filled with enzymes essential for penetrating the...
5.9K
Spermatogenesis
104.9K
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...
104.9K
Infertility in Males
347
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...
347

