Related Experiment Video
Updated: Jul 29, 2026
09:25
Assessing Signaling Properties of Ectodermal Epithelia During Craniofacial Development
Published on: March 24, 2011
9.8K
Ectodermal dysplasia - A rare case report
Poulomi Bhakta1, Bhavna Barthunia1, Haritma Nigam2
1Department of Oral Medicine and Radiology, Daswani Dental College and Research Center, Kota, Rajasthan, India.
Journal of Family Medicine and Primary Care
|November 5, 2019
Summary
Ectodermal dysplasia (ED) is a rare genetic disorder affecting ectoderm-derived tissues, often causing congenital teeth loss. This case report highlights the varied manifestations of ED, including dental anomalies and other ectodermal defects.
Area of Science:
- Genetics
- Developmental Biology
- Oral Medicine
Background:
- Ectodermal dysplasia (ED) is a group of rare genetic disorders.
- It arises from disturbances in the development of embryonic ectoderm-derived tissues.
- Key features include anomalies in hair, nails, teeth, and sweat glands.
Observation:
- This case report focuses on a patient with ectodermal dysplasia.
- The patient presented with congenital absence of teeth (anodontia or hypodontia).
- Associated ectodermal disturbances were also noted.
Findings:
- The congenital missing of teeth in ED is typically bilateral.
- Anodontia/hypodontia can co-occur with anhidrosis (lack of sweating), asteatosis (dry skin), hypotrichosis (sparse hair), and salivary gland defects.
- The case demonstrates a specific presentation of these combined symptoms.
Implications:
- Understanding ED is crucial for early diagnosis and management of associated conditions.
- Dental professionals play a key role in identifying and managing hypodontia in ED patients.
- Further research into the genetic basis and developmental pathways of ED can improve patient outcomes.
Related Concept Videos
01:49Meiosis 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...
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.
01:29Nondisjunction
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.
02:30Genomic Imprinting and Inheritance
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
01:21Nondisjunction
Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers. Nondisjunction is common during anaphase I or anaphase II of meiosis. Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold sister...
01:24Cellular Adaptation IV: Dysplasia and Metaplasia
DysplasiaDysplasia refers to abnormal changes in the size, shape, and organization of mature cells, characterized by pleomorphism, nuclear abnormalities, and increased mitotic activity. It commonly affects epithelial tissues, including the cervix, gastrointestinal tract, respiratory mucosa, and endometrium. Although it may occur alongside hyperplasia, dysplasia is not a true adaptive response but a preneoplastic change with potential to progress to cancer.When confined above the basement...