Congenital absence of salivary glands in Down syndrome

Marwan Odeh1, Miriyam Hershkovits, Jacob Bornstein

  • 1Department of Obstetrics and Gynecology, Western Galilee Hospital, , Nahariya, Israel.

Insights

Children with Down syndrome may have underdeveloped salivary glands. Ultrasound revealed that 26.7% of Down syndrome children had absent salivary glands, unlike healthy controls.

Area of Science:

  • Pediatric Dentistry
  • Genetics
  • Medical Imaging

Background:

  • Children with Down syndrome exhibit distinct saliva compositions.
  • The presence or absence of salivary glands in this population has not been previously documented.

Purpose of the Study:

  • To investigate the presence or absence of salivary glands in children with Down syndrome.
  • To compare salivary gland presence between children with Down syndrome and healthy controls.

Main Methods:

  • Ultrasound examinations were performed on 15 children with Down syndrome and 31 healthy children.
  • The parotid and submandibular glands on both sides were assessed for presence or absence.
  • Statistical analysis compared gland presence between the two groups.

Main Results:

  • One or more salivary glands were absent in 26.7% (4 out of 15) of children with Down syndrome.
  • All salivary glands were present in all healthy control children.
  • The difference in salivary gland presence between groups was statistically significant (p=0.008).

Conclusions:

  • Ultrasound imaging suggests that salivary glands may be undetected in some children with Down syndrome.
  • This finding may contribute to understanding altered saliva composition in Down syndrome.
Abstract

Related Concept Videos

Salivary Glands and Saliva01:23

Salivary Glands and Saliva

The salivary glands, of which there are three pairs known as the parotid, submandibular, and sublingual glands, play a crucial role in maintaining oral health and initiating the digestive process. Positioned near the ears, beneath the masseter muscle, the parotid glands secrete saliva into the oral cavity through the parotid duct of Stensen. Meanwhile, the submandibular glands, located on the floor of the mouth, secrete saliva through channels named submandibular ducts. The sublingual glands,...
Glucose Transporters01:27

Glucose Transporters

Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the movement of other hexoses such as fructose, mannose, and galactose.
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
Meiosis I01:49

Meiosis I

Meiosis is a carefully orchestrated set of cell divisions, the goal of which—in humans—is to produce haploid sperm or eggs, each containing half the number of chromosomes present in somatic cells elsewhere in the body. Meiosis I is the first such division, and involves several key steps, among them: condensation of replicated chromosomes in diploid cells; the pairing of homologous chromosomes and their exchange of information; and finally, the separation of homologous chromosomes by a...
Esophageal Achalasia01:27

Esophageal Achalasia

Esophageal achalasia is a chronic neurogenic disorder characterized by impaired relaxation of the lower esophageal sphincter (LES) and absent or ineffective peristalsis in the distal esophagus. This leads to a functional obstruction without a physical blockage, despite significant disruption of esophageal motility.EtiologyAchalasia is caused by degeneration of the myenteric (Auerbach's) plexus, specifically the loss of inhibitory ganglion cells that produce vasoactive intestinal peptide (VIP)...
Cystic Fibrosis: Pathogenesis01:23

Cystic Fibrosis: Pathogenesis

Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation, but...
Nondisjunction01:29

Nondisjunction

During meiosis, chromosomes occasionally separate improperly. This occurs due to failure of homologous chromosome separation during meiosis I or failed sister chromatid separation during meiosis II. In some species, notably plants, nondisjunction can result in an organism with an entire additional set of chromosomes, which is called polyploidy. In humans, nondisjunction can occur during male or female gametogenesis and the resulting gametes possess one too many or one too few chromosomes.