OBJECTIVE While evidence for oxidative injury is frequently detected in brains of humans affected by Parkinson's disease (PD) and in relevant animal models, there is uncertainty regarding its cause. We tested the potential role of catalase in the oxidative injury that characterizes PD. METHODS Utilizing brains of A53T α-Syn and ntg mice, and cultured cells, we analyzed catalase activity and e...

regarding the importance of bacillus thuringiensisisolates in microbial control, we attempted to collect native isolates and study their virulence on diamondback moth, plutella xylostella. more than 148 samples were collected from guilan, mazandaran, west azarbaijan and alborz provinces. experimental samples including soil samples from forest, fruit gardens, agricultural fields, diseased and de...

four mature stallions were used to study the effect of enzymatic antioxidant catalase on freezability of turkmen stallion's sperm. collected semen from stallions were processed and pooled before being divided treatments (200×106  sperm/ml) and diluted with extenders supplemented with different levels of catalase [0 (control), 100 u/ml (cat100), 150u/ml (cat150) and 200u/ml (cat200)]. exten...

Background: Commercial diagnostics are commonly used to identify gram-positive bacteria. Errors have been reported mostly at the species level. We have found certain phenotypic criteria used in API systems which significantly misidentify Leuconostoc, an emerging human pathogen, at the genus level. We also attempt to find practical, conventional phenotypic assays for accurate identification of t...

Some strains of Staphylococcus epidermidis and Micrococcus sp. produce nucleases. However, thermal stability was shown to be unique to the nucleases of S. aureus. In addition, two micromethods for susceptibility testing to lysostaphin were more precise and convenient than anaerobic glucose fermentation in distinguishing between the genera Staphylococcus and Micrococcus.

aim and background: schizophrenia is a chronic psychiatric disorder. the positive and negative symptoms are not only important in the prognosis of the disease but also affect the quality of life among the patients. therefore, the present survey aimed to determine the relationship between positive and negative symptoms and quality of life among schizophrenic patients in sina hospital in juneqan....

background: atopic dermatitis is a public health problem worldwide. increment of reactive oxygen species (ros) produc­tion may be one of the contributing factors of tissue damage in atopic dermatitis. the present study was designed to deter­mine the effect of vitamins e and/or d on erythrocyte superoxide dismutase and catalase activities in patients with atopic dermati­tis. methods: in a random...