Drug abuse peaks during adolescence, and exposure to drugs during adolescence predicts drug abuse in adulthood. Nevertheless, adolescence is not widely studied in animal models of drug intake. Moreover, few studies have investigated sex differences in drug-reinforced behavior during adolescence. We studied age-and sex-differences in acquisition and maintenance of amphetamine self-administration...

The aim of these studies was to compare some endocrine and non-endocrine characteristics of transgenic (carrying mammary gland-specific mWAP-hFVIII gene construct) and non-transgenic rabbits. The concentrations of corticosterone, progesterone, testosterone, estradiol, insulin-like growth factor I (IGF-I) and human factor VIII (hFVIII) in the blood plasma of adult females (9 months of age, third...

During 2011-2014, 21.0% of young persons aged 6-19 years had at least one of the three indicators of abnormal cholesterol. A larger percentage of persons categorized as obese (43.3%) had abnormal cholesterol than persons categorized as normal weight or overweight (13.8% and 22.3%, respectively). This pattern was found for both males and females. There were no significant differences between mal...

OBJECTIVE To assess the differences between young males and females after acute myocardial infarction. METHODS We retrospectively studied 236 patients (54 females and 182 males) after acute myocardial infarction and during hospital stay assessed the following parameters: risk factors; the treatment used; the pattern of coronary artery obstruction; left ventricular ejection fraction; complicat...

The ecology of senescence in marine zooplankton is not well known. Here we demonstrate senescence effects in the marine copepod Oithona davisae and show how sex and sexual selection accelerate the rate of ageing in the males. We show that adult mortality increases and male mating capacity and female fertility decrease with age and that the deterioration in reproductive performance is faster for...

Cognitive, as well as physiological, sex differences exist in young adult rats under both basal conditions and following chronic stress; however, few studies have examined whether sex differences remain in aged subjects and whether responses to stress are altered. We compared aged male and female Fischer 344 rats (21.5 months at testing) without stress and when given 21 days of restraint for 6 ...

Desire has been a marginal topic in TESOL. This study investigated whether and to what extent English learning affects Taiwanese young females’ aspiration toward western males. Four hundred ninety-nine respondents filled out a questionnaire that investigates their English learning experience and aspiration to cross–culture marriage with western males. Sixteen were interviewed. Results showed co...

BACKGROUND/AIMS Upper gastrointestinal symptoms are more frequent and severe in female than in male outpatients in Japan. This study compared theupper gastrointestinal symptoms between healthy male and female young adult volunteers using a questionnaire. METHODS In total, 581 third-grade medical students at Saga Medical School aged 22 to 30 years underwent upper gastrointestinal endoscopyand ...