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Related Concept Videos

Infertility in Males01:23

Infertility in Males

479
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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Infertility in Females01:28

Infertility in Females

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Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
Endometriosis, a condition characterized by abnormal growth of...
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Spermatogenesis01:41

Spermatogenesis

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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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Fertilization01:38

Fertilization

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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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In Vitro Fertilization01:24

In Vitro Fertilization

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In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...
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Oogenesis02:07

Oogenesis

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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...
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Related Experiment Video

Updated: Dec 20, 2025

Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects
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Biochemistry of infertility.

T Wasilewski1, M Łukaszewicz-Zając2, J Wasilewska3

  • 1Centre for Restorative Procreative Medicine, Napromedica, Bialystok, Poland.

Clinica Chimica Acta; International Journal of Clinical Chemistry
|May 25, 2020
PubMed
Summary

Comprehensive biochemical testing is essential for diagnosing and treating infertility, affecting millions globally. Evaluating thyroid, immune, and metabolic factors improves patient outcomes.

Keywords:
DiagnosisInfertilityTreatment

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Area of Science:

  • Reproductive Medicine
  • Biochemistry
  • Endocrinology

Background:

  • Infertility impacts 186 million worldwide, necessitating effective diagnostic strategies.
  • Current diagnostic approaches require enhancement for improved treatment outcomes.

Purpose of the Study:

  • To review the biochemical basis of infertility.
  • To guide the diagnosis and treatment of infertile couples through biochemical assessment.

Main Methods:

  • Exploration of recent scientific literature on infertility biochemistry.
  • Identification of key biochemical markers for infertility assessment.

Main Results:

  • Routine biochemical tests for thyroid dysfunction, immunological disorders, and insulin resistance are crucial.
  • Assessment of micro- and macronutrient malabsorption is also indicated.
  • Algorithmic protocols are needed to integrate complex biochemical data.

Conclusions:

  • A comprehensive biochemical evaluation is vital for diagnosing infertility.
  • Integrated algorithmic approaches can enhance diagnostic accuracy and treatment efficacy for infertile couples.