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Inflammatory bowel disease and X chromosome abnormalities. A case report
The Journal of Reproductive Medicine
|June 1, 1987
Summary
A woman with Crohn's disease and recurrent miscarriages had an abnormal sex chromosome constitution (45,X/46,XX). This highlights a potential link between inflammatory bowel disease, immune disorders, and X chromosome abnormalities.
Area of Science:
- Genetics
- Immunology
- Gastroenterology
Background:
- Inflammatory bowel disease (IBD), such as Crohn's disease, is associated with immune system dysregulation.
- Sex chromosome abnormalities can impact various physiological systems, including reproductive health.
Observation:
- A case report details a woman diagnosed with Crohn's disease and experiencing multiple spontaneous abortions.
- This patient presented with a mosaic sex chromosome constitution, specifically 45,X/46,XX.
Findings:
- The observed case suggests a potential positive association between inflammatory bowel disease, immunologic disorders, and X chromosome abnormalities.
- The specific 45,X/46,XX karyotype may be linked to the patient's IBD and reproductive history.
Implications:
- Recognizing this association can aid in the early detection of unsuspected sex chromosome abnormalities in patients with IBD or immune disorders.
- Further research into the genetic and immunological underpinnings of this association may reveal novel diagnostic or therapeutic targets.
Related Concept Videos
01:43Sex-linked Disorders
Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
01:58X-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.
02:32X and Y Chromosomes
Among mammals, the gender of an organism is determined by the sex chromosomes. Humans have two sex chromosomes, X and Y. Every human diploid cell has 22 pairs of autosomes and one pair of sex chromosomes. A human female has two X chromosomes, while a male has one X chromosome and one Y chromosome.
The germline cells such as egg and sperm cells carry only half the number of chromosomes, i.e., 22 autosomes and one sex chromosome. All eggs have an X chromosome, while sperm cells can carry an X or...
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01:58X-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.
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Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...