Video Experimental Relacionado
Updated: Sep 21, 2026

12:23
Granulocyte-dependent Autoantibody-induced Skin Blistering
Published on: October 12, 2012
Diagnóstico prenatal de la epidermolisis bullosa letalis durante el embarazo
Lancet (London, England)
|May 3, 1980
Resumen
El diagnóstico prenatal de epidermolysis bullosa letalis se logró utilizando microscopía electrónica en la biopsia de piel fetal a las 18 semanas de gestación. Este método es prometedor para diagnosticar rápidamente otras afecciones fetales.
Área de la Ciencia:
- Genética médica La genética médica.
- Medicina fetal es la medicina del feto.
- Microscopía de electrones por microscopía electrónica.
Sus antecedentes:
- Epidermolysis bullosa letalis es un trastorno de la piel con ampollas genético grave.
- El diagnóstico prenatal preciso es crucial para la gestión y el asesoramiento genético.
- La fetoscopia permite la visualización directa y la biopsia de las estructuras fetales.
Objetivo del estudio:
- Evaluar la eficacia de la microscopía electrónica en la biopsia de piel fetal para el diagnóstico prenatal de la epidermolisis bullosa letalis.
- Investigar la utilidad del análisis de células del líquido amniótico en conjunto con la biopsia de piel fetal para el diagnóstico prenatal.
Principales métodos:
- Diagnóstico prenatal mediante microscopía electrónica de la biopsia de piel fetal obtenida por fetoscopia a las 18 semanas de gestación.
- Confirmación del diagnóstico después de la interrupción del embarazo.
- Análisis de las células del líquido amniótico utilizando microscopía electrónica de barrido.
Principales resultados:
- La microscopía electrónica de la biopsia de piel fetal permitió el diagnóstico prenatal definitivo de la epidermolisis bullosa letalis.
- Se observaron anomalías en las células del líquido amniótico (número, tamaño, morfología).
- El diagnóstico fue confirmado después de la terminación.
Conclusiones:
- La microscopia electrónica de la biopsia de piel fetal es un método viable para el diagnóstico prenatal de la epidermolisis bullosa letalis.
- El análisis de células del líquido amniótico puede proporcionar información de diagnóstico complementaria.
- Estas técnicas de diagnóstico tienen potencial para otras condiciones prenatales.
Videos de Conceptos Relacionados
Pedigree Analysis
A pedigree is a diagram displaying a family’s history of a trait. Analyzing pedigrees can reveal (1) whether a trait is dominant or recessive, (2) the type of chromosome, autosomal or sex, a trait is linked to, (3) genotypes of family members, and (4) probabilities of phenotypes in future generations. For families with a history of autosomal or sex-linked diseases, this information can be crucial to family planning.Pedigrees Display Family HistoriesIn various plant and animal species,...
Pleiotropy
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
Nucleotide Excision Repair
Exposure to mutagens can damage DNA and result in bulky lesions that distort the double-helix structure or impede proper transcription. Damaged DNA can be detected and repaired in a process called nucleotide excision repair (NER). NER employs a set of specialized proteins that first scan DNA to detect a damaged region. Next, NER proteins separate the strands and excise the damaged area. Finally, they coordinate the replacement with new, matching nucleotides.DNA distortion and damageCells are...
Lethal Alleles
Agouti: A Lethal Allele
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Clinical Applications of Epidermal Stem Cells
Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own EpiSCs...
Skin Cancer
Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...

