Apoptosis of airway epithelial cells induced by corticosteroids

The proteins produced from the TCOF1, POLR1C, and POLR1D genes all appear to play important roles in the early development of bones and other tissues of the face. These proteins are involved in the production of a molecule called ribosomal RNA (rRNA), a chemical cousin of DNA. Ribosomal RNA helps assemble protein building blocks (amino acids) into new proteins, which is essential for the normal functioning and survival of cells. Mutations in the TCOF1, POLR1C, or POLR1D gene reduce the production of rRNA. Researchers speculate that a decrease in the amount of rRNA may trigger the self-destruction (apoptosis) of certain cells involved in the development of facial bones and tissues. The abnormal cell death could lead to the specific problems with facial development found in TCS. However, it is unclear why the effects of a reduction in rRNA are limited to facial development.

To validate the efficacy of Z-VAD-FMK, three human granulosa cell lines (GC1a, HGL5, COV434) were treated for 48 h with etoposide (50 μg/ml) and/or Z-VAD-FMK (50 μM) under normoxic conditions. To mimic the ischemic phase that occurs after ovarian fragment transplantation, cells were cultured without serum under hypoxia (1 % O2) and treated with Z-VAD-FMK. The metabolic activity of the cells was evaluated by WST-1 assay. Cell viability was determined by FACS analyses. The expression of apoptosis-related molecules was assessed by RT-qPCR and Western blot analyses.

Born in Athens, Greece, Dr. Sadis Matalon came to the United States in 1966 as an undergraduate Fulbright Scholar and subsequently received a Bachelor of Arts in Physics from Macalester College,  cum laude  with Special Departmental Honors (1970), followed by a Master of Science in Physics from the University of Minnesota (1973). He continued with a . in Physiology (1975) under the mentorship of . Wangensteen and entitled his dissertation “Water and Non-electrolyte Solute Transport across the Pulmo­nary Capillaries in New­born Rabbits.”  Read more

Apoptosis of airway epithelial cells induced by corticosteroids

apoptosis of airway epithelial cells induced by corticosteroids

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