Mitomycin C (MMC) induced aerobic and hypoxic Cytotoxicity in Chinese hamster V79 cells was studied to evaluate the role of the 1electron versus 2-electron reductive bioactivation. Superoxide dismutase, catatase, and desierai had no protective effects on the aerobic or hypoxic Cytotoxicity of MMC, whereas Tempol and Tempol-H, which are known to interrupt and terminate radical reactions, provide...

PURPOSE The purpose of this study was to determine the acute and long-term effects of mitomycin C (MMC) on quiescent rabbit corneal keratocytes regarding cell proliferation, myofibroblast differentiation and DNA repair. METHODS Quiescent keratocytes cultured in serum-free media were exposed to various concentrations of MMC and then treated with transforming growth factor-β (TGFβ). DNA damage ...

OBJECT Myelomeningocele (MMC) is the most severe form of spina bifida causing severe neurological deficits. Injury to the placode has been attributed to in utero aggression. In this study, glial and neuronal cell changes in both number and topography in mice with MMC were investigated during gestation. METHODS The curly tail/loop-tail mice model of MMC was used, and fetuses were harvested usi...

of Purpose: A comparison of long term effect on IOP and complications trabeculectomies performed with the adjunct of either postoperative 5 fluorouracil(5FU) or peroperative mitomycin C(MMC) in 100 cases of high risk glaucoma. &&&We prospectwly studied 52 eyes of46 patients treated with MMC (Follow up 15i8.7111) and compared it with a retrospective scrie of48 eyes 01 35 patients treated with 5F...

PURPOSE To investigate the expression of chemokines and their signaling pathways after application of mitomycin C (MMC) to corneal fibroblasts. METHODS Primary porcine and human corneal fibroblasts from passages 3 to 6 were treated with MMC at concentrations of 0.05, 0.1, or 0.2 mg/mL for 1, 2, 5, or 10 minutes. The relative expression of interleukin-8 (IL-8) and monocyte chemoattractant prot...

of Purpose: A comparison of long term effect on IOP and complications trabeculectomies performed with the adjunct of either postoperative 5 fluorouracil(5FU) or peroperative mitomycin C(MMC) in 100 cases of high risk glaucoma. &&&We prospectwly studied 52 eyes of46 patients treated with MMC (Follow up 15i8.7111) and compared it with a retrospective scrie of48 eyes 01 35 patients treated with 5F...

The bioreductive activation of mitomycin C (MMC) has been investigated using 10 human cancer cell lines. Except for 2 lines (COLO201 and COLO320DM), the cellular NAD(P)H: quinone oxidoreductase (DTD) activities correlated well with MMC-induced DNA damage and cytotoxicity. In addition, when the DTD activity was inhibited with 50 mM dicoumarol, the MMC activity decreased significantly. On the oth...

of Purpose: A comparison of long term effect on IOP and complications trabeculectomies performed with the adjunct of either postoperative 5 fluorouracil(5FU) or peroperative mitomycin C(MMC) in 100 cases of high risk glaucoma. &&&We prospectwly studied 52 eyes of46 patients treated with MMC (Follow up 15i8.7111) and compared it with a retrospective scrie of48 eyes 01 35 patients treated with 5F...

Glucose regulatory protein (GRP58) is known to mediate mitomycin C (MMC)-induced DNA cross-linking. However, the mechanism remains elusive. We hypothesized that thioredoxin-like domains, one at NH2 terminus and another at COOH terminus, are required for GRP58-mediated MMC reductive activation leading to DNA cross-linking. Site-directed mutagenesis mutated cysteines in thioredoxin domains to ser...

Glutathione (GSH) has been shown to modulate the Cytotoxicity of a variety of chemotherapeutic agents. The effect of mitomycin C (MMC) treatment duration and the effect of GSH depletion on in vitro cytotoxicity against the human colon cancer cell line 111-29 »asstudied under aerobic conditions. Continuous-exposure experiments revealed that the Cytotoxicity of 0.1 JIMMMC, as measured by clonoge...