Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 7

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  smoking habit
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
Cadmium levels in cord blood (CdB) of 40 neonates living in the town of Chorzów (Upper Silesia) have been determined. The mean CdB concentration was 0.439 μg/dl (SD=0.185). Smoking before and during pregnancy raised CdB levels in newborns. Mean Cd concentration in the neonates born to smoking mothers was 0.504 versus 0.353 μg/dl in those of woman who did not smoke during pregnancy.
Lead levels in cord blood (PbB) of 92 neonates living in the town of Chorzów (Upper Silesia) have been determined. The mean PbB concentration was 5.29mg/dl (SD= 2.24) in the all investigated groups.The mean Pb-CB was higher in preterm babies (x= 6.87mg/dl, SD=1.67 ), especially in boys. Pb-CB concentrations were higher in the neonates born to mothers aged more than 30 years, smoking before and during pregnancy, having bad living conditions, living close to gasoline station.
 Fluorimetric method based on oxidation of the fluorogenic 6-methoxy-2-naphthaldehyde was applied to evaluate temporal and population variability of the specific activity of salivary aldehyde dehydrogenase (ALDH) and the degree of its inactivation in healthy human population. Analyzed was also its dependence on drinking and smoking habits, coffee consumption, and its sensitivity to N-acetylcysteine. Both the specific activity of salivary ALDH and the degree of its inactivation were highly variable during the day, with the highest activities recorded in the morning hours. The activities were also highly variable both intra- and interpersonally, and negatively correlated with age, and this correlation was stronger for the subgroup of volunteers declaring abstinence from alcohol and tobacco. Moderately positive correlations of salivary ALDH specific activity with alcohol consumption and tobacco smoking were also recorded (rs ~0.27; p = 0.004 and rs = 0.30; p = 0.001, respectively). Moderate coffee consumption correlated positively with the inactivation of salivary ALDH, particularly in the subgroup of non-drinking and non-smoking volunteers. It was found that mechanical stimulation of the saliva flow increases the specific activity of salivary ALDH. The specific activity of the salivary ALDH was strongly and positively correlated with that of superoxide dismutase, and somewhat less with salivary peroxidase. The antioxidant-containing drug N-acetylcysteine increased activity of salivary ALDH presumably by preventing its inactivation in the oral cavity. Some food-related aldehydes, mainly cinnamic aldehyde and anisaldehyde, were excellent substrates of the salivary ALDH3A1 enzyme, while alkenals, particularly those with short chain, were characterized by lower affinity towards this enzyme but high catalytic constants. The protective role of salivary ALDH against aldehydes in food and those found in the cigarette smoke is discussed, as well as its participation in diminishing the effects of alcohol- and smoking-related oxidative stress.
Concentrations of Cd, Cr, Cu, Mn, Mo, Ni, Pb, Se, Tl and Zn were analyzed by ICP-MS in the scalp hair of male subjects from an urban area, three different quarters of Krakow, Poland, and from a rural area as control, which were assumed to differ in ambient pollution by metals. A questionnaire on personal data, nutritional habits, socioeconomic, occupation and health status was completed by the subjects. Significant differences (p < 0.05) were found in the levels of Cd, Cu, Mn and Ni between the locations. Using statistical methods of principal components analysis, the relationships were found between metals in the scalp hair as follows: Mn-Ni, Cr-Tl and Cd-Pb. Two separated clusters of smokers were revealed in the principal components, space suggesting other factors like environmental contamination could confound the values of parameters and relationships between them.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.