BACKGROUND Intraesophageal manganese superoxide dismutase plasmid liposome (MnSOD-PL) gene therapy protects against irradiation damage. MATERIALS AND METHODS To determine whether esophageal side population (SP) stem cells were protected, epitope-tagged (hemagglutinin) (HA) MnSOD-PL was administered to C57BL/6J mice 24 hours prior to 30 Gy esophageal irradiation. SP cells were isolated, and ap...

BACKGROUND: The role of serum manganese superoxide dismutase (MnSOD) in the development of gastric cancer has not been clearly defined. METHODS: We conducted a case-control study to address the potential relationship between serum MnSOD levels and gastric cancer. Cases were 275 gastric cancer patients and controls were 275 sexand age-matched healthy persons. Serum MnSOD levels were determined b...

We have reported the tumor suppressive effects of manganese-containing superoxide dismutase (MnSOD) in human breast cancer cells. In order to understand the molecular mechanism of this anti-tumor effect, we asked whether tumor suppressor gene(s), especially the ones inhibiting tumor invasion and motility, are involved in MnSOD-induced tumor suppression. Maspin is one of the serpin family of pro...

BACKGROUND/AIM We evaluated doxycycline-inducible manganese superoxide dismutase (MnSOD(tet/tet)) mice after 9.25 Gy total-body irradiation (TBI) or 20 Gy thoracic irradiation. MATERIALS AND METHODS Six-week-old MnSOD(tet/tet) or control C57BL/6NHsd mice on or off doxycycline (doxy) in food received 9.25 Gy TBI, were sacrificed at day 19 and bone marrow, brain, esophagus, heart, intestine, ki...

Submit Manuscript | http://medcraveonline.com MOJ Anat Physiol 2015, 1(2): 00006 was neonatal lethal. Due to background modifications, a small percentage of knockout mice showed dilated cardiomyopathy indicating increased vulnerability to oxidative injury in the cardiac myocytes [1]. Ikegami et al. [3] successfully generated tissuespecific MnSOD conditional knockout mice that would provide a us...

Air breathing, especially oxygen therapy, exposes the lung to reactive oxygen species (ROS). Antioxidant enzymes (AOEs) may protect the lung from ROS-mediated injury. Because expression of the key AOEs increases in several animal species during gestation, we investigated (1) the messenger RNA (mRNA) and activity levels of the key AOEs manganese and copper-zinc superoxide dismutases (MnSOD and C...

BACKGROUND Cigarette smoke contains carcinogenic aromatic and heterocyclic amines that are metabolized by N-acetyltransferase (NAT). These carcinogens also produce reactive oxygen species that are metabolized by manganese superoxide dismutase (MnSOD). The association between prostate cancer (PCA) and the polymorphism of MnSOD and NAT, and cigarette smoking was investigated. PATIENTS AND METHO...

Endotoxin (lipopolysaccharide [LPS]) is known to induce the production of tumor necrosis factor (TNF)-alpha and the induction of manganese superoxide dismutase (MnSOD). We have recently demonstrated that induction of TNF-alpha and MnSOD by LPS is mediated through different signal transduction pathways. In the current study, we investigated the role of reactive oxygen species (ROS) in the induct...

Tolerance to hyperoxia usually requires an increase of lung antioxidant enzyme (AOE) activity. We used rats with different degrees of tolerance to > 95% O2 to evaluate the importance of individual AOEs for tolerance; we also explored the regulation of AOE gene expression. During exposure of adult rats to > 95% O2, lung manganese superoxide dismutase (MnSOD) activity fell approximately 50% despi...

Previous phenotyping of glucose homeostasis and insulin secretion in a mouse model of hereditary hemochromatosis (Hfe(-/-)) and iron overload suggested mitochondrial dysfunction. Mitochondria from Hfe(-/-) mouse liver exhibited decreased respiratory capacity and increased lipid peroxidation. Although the cytosol contained excess iron, Hfe(-/-) mitochondria contained normal iron but decreased co...