Video Experimental Relacionado
Updated: Aug 11, 2026
09:58
A 3D System for Culturing Human Articular Chondrocytes in Synovial Fluid
Published on: January 31, 2012
El factor angiogénico del líquido sinovial se asemeja al de los tumores
Lancet (London, England)
|March 29, 1980
Resumen
Se encontró un factor de angiogénesis de bajo peso molecular en el líquido sinovial de pacientes con osteoartritis, artritis reumatoide y espondilitis anquilosante. Este factor puede desempeñar un papel en el desarrollo de exudado sinovial en estas condiciones.
Área de la Ciencia:
- Reumatología Reumatología.
- Oncología Oncología.
- La bioquímica es la bioquímica.
Sus antecedentes:
- El análisis del líquido sinovial es crucial para el diagnóstico de enfermedades articulares.
- La angiogénesis, la formación de nuevos vasos sanguíneos, está implicada en diversas afecciones patológicas, incluidos el cáncer y las enfermedades inflamatorias.
Objetivo del estudio:
- Para investigar la presencia y las características de los factores de angiogénesis en el líquido sinovial de pacientes con diferentes artropatías.
- Para determinar si los factores de angiogénesis derivados de tumores están presentes en el líquido sinovial y se correlacionan con condiciones específicas de las articulaciones.
Principales métodos:
- Análisis de muestras de líquido sinovial de pacientes diagnosticados con osteoartritis, artritis reumatoide, espondilitis anquilosante y artropatía psoriásica.
- Análisis de la actividad del factor de angiogénesis de bajo peso molecular, comparando los hallazgos con los factores derivados de tumores.
Principales resultados:
- Se detectó un factor de angiogénesis de bajo peso molecular en el líquido sinovial de pacientes con osteoartritis, artritis reumatoide y espondilitis anquilosante.
- La concentración más alta de este factor se observó en pacientes con osteoartritis.
- No se detectó ningún factor de angiogénesis en el líquido sinovial de pacientes con artropatía psoriásica.
Conclusiones:
- La presencia de un factor de angiogénesis parecido a un tumor en el líquido sinovial sugiere su potencial papel en la patología articular.
- El factor de angiogénesis puede estar involucrado en la patogénesis de la formación de exudado sinovial en ciertas enfermedades articulares inflamatorias y degenerativas.
Videos de Conceptos Relacionados
02:53Adaptive Mechanisms in Cancer Cells
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
02:17The Tumor Microenvironment
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
01:10Mechanism of Angiogenesis
Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
01:24Regulation of Angiogenesis and Blood Supply
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
01:24Inflammatory Response II: Inflammatory Exudate and Tissue Repair
The immune system's inflammatory response destroys the invading pathogen, permitting the tissue to heal. The changes during the cellular and vascular stages allow exudate formation at the site of inflammation. The inflammatory exudate released from the wound has high protein content and a specific gravity above 1.020.
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the exudate's...
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the exudate's...
01:21Cytotoxic Edema: Pathophysiology
Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous supply...