Although oxidation is the most common biological and energy producing reaction, oxidative
stress is harmful to cell, because the products of oxidation such as free radicals and …

Extensive growth of cancer in humans is a major cause of death. Numerous studies are
being conducted to improve the early diagnosis, prevention, and treatment of cancer. Recent …

OBJECTIVES: Glutathione (GSH) and enzymes cooperating with it–glutathione peroxidase
(GSHPx), glutathione S-transferase (GST) and glutathione reductase (GSHR)–play crucial …

Background and Objectives: The purpose of this study is to evaluate the level of oxidative
stress before and after breast cancer surgery. Materials and Methods: Malondialdehyde …

Glutathione S-transferase alpha 4 (GSTA4) is a phase II detoxifying enzyme that
metabolizes electrophiles and carcinogens including 4-hydroxy-2-nonenal (4-HNE), an …

Gastrointestinal cancers are diseases due to genetic and environmental factors. In this
present work we are interested in the influence of environmental factors on the occurrence of …

There are only a few reports examining the impact of oxidative stress in patients with benign
and malignant brain tumors. In this study we investigated whether there are changes in …

Background Colorectal cancer (CRC) is one the leading causes of cancer related deaths
among Iranians. Despite the various progresses in new therapeutic methods, it has still a …

In photodynamic therapy (PDT) a tumor-selective photosensitizer is administered and then
activated by exposure to a light source of appropriate wavelength. Multidrug resistance …

The variability in phenotype that occurs for so-called 'single-gene disorders' may be
because of germline alterations in numerous primary and “modifier” genes. Within HNPCC …