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Biomedical subjects

A Facio

Publications and source records attributed to A Facio.

9 recordsLinked to original sources
PubMed2001

What makes Argentinian girls unhappy? A cross-cultural contribution to understanding gender differences in depressed mood during adolescence.

The aim of this work is to provide a cross-cultural contribution to the study of gender differences in adolescent mood by providing the results of a random sample of 165 Argentinian boys and girls studied longitudinally by means of a survey at 13-14, 15-16 and 17-18 years old. Using Rosenberg's Depressive Affect Scale, the gender difference, larger than that of many first-world samples, is significant at 15-16 and the gap increases at 17-18. It is already present at 13 in another sample in which Kovacs' Child Depression Inventory was applied. Girls reporting high family warmth, high self-esteem, low anxiety and who do not choose a friend as the most admired person at 13-14 have a better mood on average through adolescence while high self-esteem and weight satisfaction at 13-14 exerts this kind of effect in boys. A buffering effect of self-esteem on levels of girls' dysphoria was also demonstrated.

Adolescent↗
PubMed1998

Latins, Catholics and from the far south: Argentinian adolescents and their parents.

This paper examines the answers given by a random sample of 341 15- to 19-year old Argentinian adolescents, both male and female, in the 10th and 12th grades of high school in Paraná, to questions focusing on their relationship with their parents and formed part of a comprehensive survey on various aspects of their socio-emotional development. Despite the fact that the individuals belong to a different geographical and cultural environment, the findings coincide with those from countries such as the U.S.A., Great Britain, Spain and Australia. Parents are the most important persons in the teenagers' emotional life; they are still identification models for them and neither their friends, partners nor other adults displace them from their central position. The bond is perceived as positive and the satisfaction rests on the support they give. There are disagreement areas hinging on issues such as school performance, time-table for outings, and overcontrol, but there is agreement on moral, religious and political values. Several statistically significant differences in the answers provided by both genders and in the perception of the maternal and paternal roles were found.

Adolescent↗
PubMed1997

[Anticentromere antibodies and lung disease without skin involvement].

Anticentromere antibodies are closely related to systemic sclerosis and basically to limited cutaneous form. Two patients with different forms of lung disease, positive anticentromere antibodies and absence of the characteristic skin involvement of the systemic sclerosis are presented.

Aged↗
PubMed1996

The association of tooth lead content with dental health factors.

The purpose of this study was to determine the relationships of lead content in the human tooth with the prevalence of caries, dental plaque, pH of saliva, levels of Salivalis lactobacilli (SL) and Mutans streptococci (MS), degree of dental abrasion, tooth colour and toothbrushing frequency. A total of 220 teeth (one per person) were analysed using a microwave oven digestion procedure and lead content was measured by atomic absorption spectrometry. Tooth lead content followed a logarithmic-normal distribution and it increased with the prevalence of caries. Tooth lead concentrations were positively correlated with all the considered dental health factors except the pH of saliva, for which there was a significant negative correlation. Coloured teeth and teeth subject to abrasion showed the highest lead content. The highest number of colonies of SL and MS in saliva paralleled the highest lead tooth levels. Teeth obtained from irregular brushers presented higher tooth lead contents than subjects with a regular toothbrushing frequency. Multiple logistic regression analysis showed a significant association between tooth lead levels and dental plaque surface, Salivalis lactobacilli number, dental abrasion and dental colour. We conclude that accumulation of lead in teeth is associated with those dental health factors.

Adolescent↗
PubMed1994

Dental lead levels in the Galician population, Spain.

The aim of this study was to investigate tooth lead concentrations in a Spanish population living in Coruña, Spain. A total of 220 teeth were analysed using a microwave oven digestion procedure and lead content was measured by atomic absorption spectrometry. Samples were classified according to age, sex, type of tooth, cause of extraction and place of residence. Tooth lead levels followed a logarithmic-normal distribution. The general geometric mean was 10.36 micrograms/g of tooth. There was a significant increase in teeth lead levels with advancing age. Permanent teeth showed higher values (13.09 +/- 1.07 micrograms/g, mean +/- S.E.M.) than deciduous teeth (3.96 +/- 1.07 micrograms/g). However, no differences were found between sexes. High lead concentrations were detected in pathological teeth, particularly in those with periodontal pathology, suggesting a relation between lead levels and dental disease. Nevertheless, teeth with caries did not show any significant lead increase. People living in urban areas of the coast had the highest lead teeth contamination. This is the first study in Spain which describes the tooth lead levels as a marker of lead exposure.

Adolescent↗
PubMed1993

Microwave oven digestion procedure for atomic absorption spectrometry analysis of bone and teeth.

The purpose of this study was to develop a new method for determination of the mineral element in teeth and bone using a microwave digestion procedure coupled to atomic absorption spectrometry. Samples were ashed at 450 degrees C for 4.5 h and subsequently digested in a microwave oven at maximum power (600 W) for 10 s using a Teflon closed Parr bomb. This method permits the rapid dissolution of the biological samples, avoiding operations such as slicing and cutting which often introduce alterations in sample homogeneity and may contribute to their contamination. The analysis of Na, K, Ca, Mg, Fe, Zn, Ba, Cd and Pb showed good reproducibility, precision and accuracy as compared with the certified values for the IAEA H-5 animal bone. Average concentration for those elements in permanent teeth obtained from children aged 11-18 years by orthodontics are given.

Adolescent↗