Video Experimental Relacionado
Updated: Sep 9, 2025
05:31
Author Spotlight: Modeling an Aspect of Preeclampsia in Female Mice Using Hypoxic Human Placenta-Derived Small Extracellular Vesicles
Published on: January 26, 2024
914
El sistema del complemento en el embarazo humano y la preeclampsia
1Department of Surgery, Laboratory of Tumor Immunology and Immunotherapy, Medical Education Building-C, Morehouse School of Medicine, Atlanta, GA, United States.
Frontiers in immunology
|September 4, 2025
Resumen
El sistema del complemento es vital para un embarazo saludable. Su desregulación está relacionada con la preeclampsia, una afección grave, que pone de relieve la necesidad de diagnósticos y terapias basadas en el complemento.
Área de la Ciencia:
- Inmunología Reproductiva
- La inmunidad innata
- Salud materna y fetal
Sus antecedentes:
- El embarazo humano exitoso requiere la adaptación inmune materna al embrión semi-allograft.
- La desregulación inmune durante el embarazo puede conducir a complicaciones como pérdida de embarazo recurrente y preeclampsia.
- El sistema del complemento (CS) es un componente inmune innato clave crucial para la homeostasis inmune.
Objetivo del estudio:
- Para aclarar el papel crítico del sistema del complemento (CS) en el embarazo humano.
- Explorar cómo la desregulación del sistema cefalorraquídeo contribuye a la patogénesis de la preeclampsia.
- Revisar las estrategias diagnósticas y terapéuticas basadas en el complemento para la preeclampsia.
Principales métodos:
- Revisión de las vías de señalización, reguladores y ejes del sistema del complemento (C3a/C3aR, C5a/C5aR).
- Análisis del papel del CS en la fertilización, la implantación y el desarrollo fetal.
- Examen de las alteraciones cerebrovasculares maternas en el embarazo normal y la preeclampsia.
Principales resultados:
- El CS es integral para el establecimiento y mantenimiento exitoso del embarazo.
- Se observan alteraciones en la señalización CS materna en la preeclampsia.
- Tanto la desregulación sistémica como la local (placentaria) del sistema cefalorraquídeo contribuyen a la preeclampsia.
Conclusiones:
- El sistema del complemento juega un papel fundamental en el embarazo.
- La desregulación del complemento es un factor importante en el desarrollo de la preeclampsia.
- Dirigirse al sistema del complemento ofrece vías prometedoras para el diagnóstico y tratamiento de la preeclampsia.
Videos de Conceptos Relacionados
01:27Complement System
2.7K
The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
2.7K
01:33Hormonal Regulation
33.7K
The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
33.7K
01:15Transcytosis of IgG
2.9K
Transcytosis is the process in which molecules are internalized by endocytosis, transported across the cell, and released through exocytosis from the opposite end of the cell. Molecules such as insulin, immunoglobulins, and certain nutrients are transferred through the recycling endosomes by recycling and transcytosis.
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
2.9K
01:23Antimicrobial Proteins
5.0K
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
5.0K
01:22Development of Immunocompetence
444
The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
444
01:36Humoral Immune Responses
75.5K
Overview
75.5K