to develop a new more accurate spectrophotometric method for detecting monoamine oxidase inhibitors from plant extracts, a series of amine substrates were selected and their ability to be oxidized by monoamine oxidase was evaluated by the hplc method and a new substrate was used to develop a peroxidase-linked spectrophotometric assay. 4-(trifluoromethyl) benzylamine (11) was proved to be an exc...

cancer is one of the main cause of mortality in the world which appears by the effect of enviromental physico-chemical mutagen and carcinogen agents. the identification of new cytotoxic drug with low sid effects on immune system has developed as important area in new studies of immunopharmacology. curcumin is a natural polyphenol with anti-oxidative, anti-inflammatory and anti-cancer properties...

helicobacter pylori is the causative agent of gastritis and peptic ulcer disease. eradication of h. pylori is hard to achieve and often require multiple antibiotics regimens. these regimens are quite expensive and have substantial side effects. licorice is a traditional drug which is frequently used for gastric discomforts in iran. the susceptibility of h. pylori to the extract of licorice has ...

background and aims: plant certification programs need reliable, fast, cheap and sensitive methods for detection of systemic pathogens with special interest in virus and viroid detection. reverse transcriptase-polymerase chain reaction (rt-pcr) has been documented as an alternative assay for certification of plant propagating materials. the main object of the present study was the optimization ...

background: the present study was designed to evaluate the homing potential of mouse embryonic stem cells (esc) treated with erythropoietin (epo) in hematopoietic organs such as spleen and liver after transplantation using morphological and immuno-histochemical techniques. methods: day-four embryoid body (eb)-derived cells were dissociated and re-plated in medium in the presence and absence of ...

background: diarrhea, caused by enteroaggregative escherichia coli (eaec), is an important cause of illness and death. numerous virulent factors have been described in eaec. however, their prevalence was highly variable among eaecs of distinct geographic locations. studies have shown that dispersin (antiaggregation protein, aap) is one of the important and abundant virulent factors in eaec. in ...

background: toxoplasma gondii is an intracellular parasite, which infects one-third population of world. humans and animals acquire infection by ingesting oocytes from feces of cats or by meat of other animals having cysts that may lead to congenital, ocular or cephalic toxoplasmosis. either it is important to detect t. gondii from meat of food animals from retail shops or directly at slaughter...

rifampin, an antibiotic widely used for the treatment of mycobacterial infections, produceshepatic, renal and bone marrow toxicity in human and animals. in this study, the protectiveeffects of vitamin c and n-acetylcysteine (nac) on the toxicity of rifampin on hepg2 cellswere investigated.human hepatoma cells (hepg2) were cultured in 96-well m of rifampin in the presence ofmicroplate and expose...