Effects of a newly synthesized xanthine derivative propentofylline (3,7-dihydro-3-methyl-1-(5-oxohexyl)-7-propyl-1H-purine-2,6-dione) on learning and memory of rodents were examined in the two different paradigms. In a shuttle box active avoidance paradigm, propentofylline (25 mg/kg/day, p.o.) improved the decreased learning ability of 12-month-old spontaneously hypertensive rats. Normotensive ...

This study attempts to determine the effect of feeding mackerel dried by low temperature vacuum method to mice on their learning behavior and fatty acid composition of the nervous system. Thirty-two male mice were fed either a control (palm oil, control group) diet or a diet of 20% dried mackerel (mackerel group) for three months. Learning behavior was assessed using a passive avoidance test, a...

Income tax is one of the most important costs of companies and it is usually considered as a cost that should not be paid. One of the most noticeable and influential factors in tax avoidance is corporate ownership structure. With an emphasis on institutional ownership and its types in this paper, it is attempted to measure the effect of this ownership and its types on corporate tax avoidance. F...

conclusions these results indicated that aqueous extract of lemon verbena (≥ 100 mg/kg) has undesirable effects on memory; however, understanding the underling mechanisms needs further investigation. background lemon verbena (lippia citriodora) has been known to have various pharmacologic activities. objectives lemon verbena leaves are used to make an herbal tea, which is traditionally used for...

objective(s) since diabetes mellitus is accompanied by cognitive impairment in diabetic patient and animal models and since lipids play important roles in neuronal membrane composition, structure and function; we intended to evaluate the effect of dietary butter oil on passive avoidance memory of streptoztosin (stz)-induced diabetic rats in this study. materials and methods thirty six adult mal...