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Related Concept Videos

Uterine Tubes01:16

Uterine Tubes

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The uterine or fallopian tubes function as the conduit through which oocytes travel from the ovaries to the uterus. Each fallopian tube measures approximately 10 to 13 cm long and is anatomically divided into the infundibulum, ampulla, isthmus, and interstitial part (or intramural segment). The infundibulum is characterized by its funnel shape and features extensions called fimbriae which reach towards the peritoneal cavity. These fimbriae play a critical role during ovulation as they extend...
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Fertilization01:38

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During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...
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The journey of sperm from its origin to the point of ejaculation begins within the seminiferous tubules of the testis. Here, Sertoli cells produce fluid that propels non-motile sperm through a series of conduits, starting with the straight tubules leading to the rete testis. This interconnected network of tubules acts as the initial pathway for sperm, guiding them into the efferent ductules and then into the epididymis for maturation.
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Spermatogenesis01:41

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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...
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Infertility in Males01:23

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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...
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Ovarian Cycle01:27

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The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle...
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Related Experiment Video

Updated: Jan 15, 2026

An Efficient Method for Extracting Human Fallopian Tube Epithelia for Single-cell Analyses
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Fallopian tubes influences sperm selection and fertilization success.

Mahsaneh Vatankhah1, Zahra Zandieh1,2, Azam Govahi3

  • 1Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.

Scientific Reports
|October 6, 2025
PubMed
Summary

Human sperm presence in the fallopian tube alters protein expression, creating an optimal environment for fertilization. This proteomic shift supports sperm selection and enhances reproductive success.

Keywords:
Human fallopian tubeHuman spermProteomics

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Area of Science:

  • Reproductive biology
  • Proteomics
  • Human physiology

Background:

  • The fallopian tube plays a critical role in fertilization and early embryonic development.
  • Understanding the molecular interactions between sperm and the fallopian tube is crucial for reproductive medicine.

Purpose of the Study:

  • To investigate the proteomic changes in the fallopian tube following exposure to human sperm.
  • To elucidate the role of these changes in sperm capacitation, maturation, fertilization, and early embryonic development.

Main Methods:

  • Proteomic analysis using multiplexed tandem mass tag (TMT)-based proteomics.
  • Western blot analysis for data validation.
  • Comparison of protein profiles between women with and without recent intercourse before hysterectomy.

Main Results:

  • Significant upregulation of 90 proteins and downregulation of 200 proteins in the fallopian tube after sperm exposure.
  • Affected proteins are involved in inflammation, angiogenesis, coagulation, metabolism, and hormone secretion.
  • Sperm presence correlates with a less stressful tubal environment and activation of supportive signaling pathways.

Conclusions:

  • Healthy sperm presence induces a favorable proteomic environment in the fallopian tube.
  • These molecular changes facilitate high-quality sperm selection and prepare for successful fertilization.
  • The study provides insights into the molecular dialogue essential for human reproduction.