Submitted Successfully!
To reward your contribution, here is a gift for you: A free trial for our video production service.
Thank you for your contribution! You can also upload a video entry or images related to this topic.
Version Summary Created by Modification Content Size Created at Operation
1
Camila Xu
 + 553 word(s) 553 2020-12-15 07:25:05

Video Upload Options

We provide professional Video Production Services to translate complex research into visually appealing presentations. Would you like to try it?
No, upload directly Yes

Confirm

Are you sure to Delete?
Yes No
Cite
If you have any further questions, please contact Encyclopedia Editorial Office.
Xu, C. Geleophysic Dysplasia. Encyclopedia. Available online: https://encyclopedia.pub/entry/3977 (accessed on 26 December 2024).
Xu C. Geleophysic Dysplasia. Encyclopedia. Available at: https://encyclopedia.pub/entry/3977. Accessed December 26, 2024.
Xu, Camila. "Geleophysic Dysplasia" Encyclopedia, https://encyclopedia.pub/entry/3977 (accessed December 26, 2024).
Xu, C. (2020, December 23). Geleophysic Dysplasia. In Encyclopedia. https://encyclopedia.pub/entry/3977
Xu, Camila. "Geleophysic Dysplasia." Encyclopedia. Web. 23 December, 2020.
Geleophysic Dysplasia
Edit
This entry is adapted from the peer-reviewed paper https://medlineplus.gov/genetics/condition/geleophysic-dysplasia

Geleophysic dysplasia is an inherited condition that affects many parts of the body. It is characterized by abnormalities involving the bones, joints, heart, and skin.

genetic conditions

1. Introduction

People with geleophysic dysplasia have short stature with very short hands and feet. Most also develop thickened skin and joint deformities called contractures, both of which significantly limit mobility. Affected individuals usually have a limited range of motion in their fingers, toes, wrists, and elbows. Additionally, contractures in the legs and hips cause many affected people to walk on their toes.

The name of this condition, which comes from the Greek words for happy ("gelios") and nature ("physis"), is derived from the good-natured facial appearance seen in most affected individuals. The distinctive facial features associated with this condition include a round face with full cheeks, a small nose with upturned nostrils, a broad nasal bridge, a thin upper lip, upturned corners of the mouth, and a flat area between the upper lip and the nose (philtrum).

Geleophysic dysplasia is also characterized by heart (cardiac) problems, particularly abnormalities of the cardiac valves. These valves normally control the flow of blood through the heart. In people with geleophysic dysplasia, the cardiac valves thicken, which impedes blood flow and increases blood pressure in the heart. Other heart problems have also been reported in people with geleophysic dysplasia; these include a narrowing of the artery from the heart to the lungs (pulmonary stenosis) and a hole between the two upper chambers of the heart (atrial septal defect).

Other features of geleophysic dysplasia can include an enlarged liver (hepatomegaly) and recurrent respiratory and ear infections. In severe cases, a narrowing of the windpipe (tracheal stenosis) can cause serious breathing problems. As a result of heart and respiratory abnormalities, geleophysic dysplasia is often life-threatening in childhood. However, some affected people have lived into adulthood.

2. Frequency

Geleophysic dysplasia is a rare disorder whose prevalence is unknown. More than 30 affected individuals have been reported.

3. Causes

Geleophysic dysplasia results from mutations in the ADAMTSL2 gene. This gene provides instructions for making a protein whose function is unclear. The protein is found in the extracellular matrix, which is the intricate lattice of proteins and other molecules that forms in the spaces between cells. Studies suggest that the ADAMTSL2 protein may play a role in the microfibrillar network, which is an organized clustering of thread-like filaments (called microfibrils) in the extracellular matrix. This network provides strength and flexibility to tissues throughout the body.

Mutations in the ADAMTSL2 protein likely change the protein's 3-dimensional structure. Through a process that is poorly understood, ADAMTSL2 gene mutations alter the microfibrillar network in many different tissues. Impairment of this essential network disrupts the normal functions of cells, which likely contributes to the varied signs and symptoms of geleophysic dysplasia. Researchers are working to determine how mutations in the ADAMTSL2 gene lead to short stature, heart disease, and the other features of this condition.

3.1. The genes associated with Geleophysic dysplasia

  • ADAMTSL2

  • FBN1

4. Inheritance

This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition.

5. Other Names for This Condition

  • geleophysic dwarfism

References

  1. Giray O, Kýr M, Bora E, Saylam G, Ugurlu B, Gürel D. Clinical andmorphological phenotype of geleophysic dysplasia. Ann Trop Paediatr. 2008Jun;28(2):161-4. doi: 10.1179/146532808X302206.
  2. Le Goff C, Morice-Picard F, Dagoneau N, Wang LW, Perrot C, Crow YJ, Bauer F,Flori E, Prost-Squarcioni C, Krakow D, Ge G, Greenspan DS, Bonnet D, Le Merrer M,Munnich A, Apte SS, Cormier-Daire V. ADAMTSL2 mutations in geleophysic dysplasia demonstrate a role for ADAMTS-like proteins in TGF-beta bioavailabilityregulation. Nat Genet. 2008 Sep;40(9):1119-23. doi: 10.1038/ng.199.
  3. Marzin P, Cormier-Daire V. Geleophysic Dysplasia. 2009 Sep 22 [updated 2018Oct 11]. In: Adam MP, Ardinger HH, Pagon RA, Wallace SE, Bean LJH, Stephens K,Amemiya A, editors. GeneReviews® [Internet]. Seattle (WA): University ofWashington, Seattle; 1993-2020. Available fromhttp://www.ncbi.nlm.nih.gov/books/NBK11168/
  4. Pontz BF, Stöss H, Henschke F, Freisinger P, Karbowski A, Spranger J. Clinicaland ultrastructural findings in three patients with geleophysic dysplasia. Am JMed Genet. 1996 May 3;63(1):50-4.
  5. Rosser EM, Wilkinson AR, Hurst JA, McGaughran JM, Donnai D. Geleophysicdysplasia: a report of three affected boys--prenatal ultrasound does not detectrecurrence. Am J Med Genet. 1995 Sep 11;58(3):217-21.
  6. Santolaya JM, Groninga LC, Delgado A, Monasterio JL, Camarero C, Bilbao FJ.Patients with geleophysic dysplasia are not always geleophysic. Am J Med Genet.1997 Oct 3;72(1):85-90. Review.
  7. Scott A, Yeung S, Dickinson DF, Karbani G, Crow YJ. Natural history of cardiacinvolvement in geleophysic dysplasia. Am J Med Genet A. 2005 Jan30;132A(3):320-3. Review.
  8. Shohat M, Gruber HE, Pagon RA, Witcoff LJ, Lachman R, Ferry D, Flaum E, RimoinDL. Geleophysic dysplasia: a storage disorder affecting the skin, bone, liver,heart, and trachea. J Pediatr. 1990 Aug;117(2 Pt 1):227-32.
  9. Wraith JE, Bankier A, Chow CW, Danks DM, Sardharwalla IB. Geleophysicdysplasia. Am J Med Genet. 1990 Feb;35(2):153-6.
More
©Text is available under the terms and conditions of the Creative Commons-Attribution ShareAlike (CC BY-SA) license; additional terms may apply. By using this site, you agree to the Terms and Conditions and Privacy Policy.
Upload a video for this entry
Information
Subjects: Genetics & Heredity
Contributor MDPI registered users' name will be linked to their SciProfiles pages. To register with us, please refer to https://encyclopedia.pub/register :
Camila Xu
View Times: 608
Entry Collection: MedlinePlus
Revision: 1 time (View History)
Update Date: 23 Dec 2020
Table of Contents
    1000/1000
    Hot Most Recent
    Video Production Service
    Feedback