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Related Concept Videos

X-Inactivation01:58

X-Inactivation

The human X chromosome contains over ten times the number of genes as in the Y chromosome. Since males have only one X chromosome, and females have two, one might expect females to produce twice as many of the proteins, with undesirable results.
X-inactivation01:58

X-inactivation

The human X chromosome contains over ten times the number of genes as in the Y chromosome. Since males have only one X chromosome, and females have two, one might expect females to produce twice as many of the proteins, with undesirable results.
Infertility in Males01:23

Infertility 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...
Dosage Compensation02:50

Dosage Compensation

In animals, gender is determined by the number and type of sex chromosome. For example, human females have two X chromosomes, and males have one X and one Y chromosome, whereas C.elegans with one X chromosome is a male, and the one with two X chromosomes is a hermaphrodite.
In addition to sexual development, the X chromosome has genes involved in autosomal functions such as brain development and the immune system. Therefore, males and females with  distinct numbers of X chromosomes will have...
Disorders of the Male Reproductive System01:20

Disorders of the Male Reproductive System

Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...
The Y Chromosome Determines Maleness02:19

The Y Chromosome Determines Maleness

The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...

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Human Ovarian Surface Epithelium Organoids as a Platform to Study Tissue Regeneration
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Complete Androgen Insensitivity Syndrome.

Asra Hashmi1, Farha Hanif, Shumaila Muhammad Hanif

  • 1Dow University of Health Sciences, Karachi.

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
|September 2, 2008
PubMed
Summary
This summary is machine-generated.

Complete Androgen Insensitivity Syndrome (CAIS), affecting 1 in 20,000, results in individuals with 46, XY chromosomes appearing as normal females. This case highlights a 17-year-old with CAIS presenting with hernia and amenorrhea, necessitating gonadectomy and hormone therapy.

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Area of Science:

  • Endocrinology
  • Genetics
  • Reproductive Medicine

Background:

  • Complete Androgen Insensitivity Syndrome (CAIS) affects approximately 1 in 20,000 individuals.
  • CAIS is characterized by a 46, XY karyotype in individuals who appear phenotypically female.
  • The condition arises from mutations in the Androgen Receptor (AR) gene, leading to testosterone resistance.

Observation:

  • A 17-year-old female presented with inguinal hernia and amenorrhea.
  • Investigations revealed absent internal female genitalia and a suspected abdominal testes.
  • This clinical presentation is consistent with Complete Androgen Insensitivity Syndrome.

Findings:

  • The patient's condition was linked to mutations in the AR gene at Xq11-12.
  • These mutations cause cellular insensitivity to androgens, including testosterone.
  • The genetic basis of CAIS explains the phenotypic presentation despite the XY genotype.

Implications:

  • Early diagnosis and management of CAIS are crucial for patient well-being.
  • Gonadectomy is indicated to prevent malignancy in undescended testes.
  • Lifelong hormone replacement therapy is essential for managing hormonal imbalances post-gonadectomy.