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P Mallet

Publications and source records attributed to P Mallet.

14 recordsLinked to original sources
PubMed1998

Rating and recognition of peers' personal odors by 9-year-old children: an exploratory study.

Eighteen elementary school children assessed the pleasantness and perfumed aspect of familiar peers' odors, sampled through tee shirts worn without modification of hygienic habits. The participants were also requested to categorize the odors by sex and to recognize those of several target classmates varying in sex and socioemotional status (the participant's most preferred classmate vs. a mere acquaintance). The ratings of odors by familiar peers appeared consistent with those obtained from nonfamiliar peers and adults and varied according to the sex of wearer of the tee shirts. For the five categories of peers examined, as well as for the participants themselves, olfactory recognition was better than chance. Moreover, it was higher for the same-sex preferred peers than for the others only for the female perceivers. The results are discussed in terms of their behavioral relevance for peer relationships, focusing especially on (a) the relations between sex differences in odors and gender development and (b) the function of olfactory memory in the emotional regulation of friendships.

Adult↗
PubMed1997

The development of gender schemata about heterosexual and homosexual others during adolescence.

Perceptions of heterosexual and homosexual individuals were investigated among 12-, 16-, and 20-year-old French adolescents. Participants described heterosexual and homosexual males and females with typical masculine and feminine personality traits. Overall, they perceived heterosexual males as having more masculine traits than homosexual males. The 16- and 20-year-olds perceived homosexual males as more feminine than heterosexual males, whereas the reverse was observed in 12-year-olds. Furthermore, the 12-year-olds perceived heterosexual females as more feminine than homosexual females, a difference that disappeared in the older age groups. Results support the view of early adolescence as a crucial period in the development of gender schemata about sexually significant others.

Adolescent↗
PubMed1996

Differential long-term effects of insulin-like growth factor-I (IGF-I) growth hormone (GH), and IGF-I plus GH on body growth and IGF binding proteins in hypophysectomized rats.

The long-term effects of recombinant human insulin-like growth factor-I (rhIGF-I) and GH (rhGH) on body growth and the IGF-I/IGF binding protein (IGFBP)/acid-labile subunit (ALS) axis were investigated in hypophysectomized (hypox) rats given excipient, rhIGF-I (2 mg/kg.day s.c., minipumps), rhGH (2 mg/kg.day, s.c., daily injections), or rhIGF-I plus rhGH for 28 days. The relative growth-promoting activity of the treatments was rhGH plus rhIGF-I more than rhGH more than rhIGF-I. Weight gain induced by rhIGF-I progressively declined after 4 days, compared with a more maintained effect of rhGH. At day 28, growth responses did not correlate with serum IGF-I levels [rhGH plus rhIGF-I (492 +/- 140) > rhIGF-I (322 +/- 75) > rhGH (85 +/- 26) > control (39 +/- 7 ng/ml)]. Serum ALS concentrations in hypox rats were remarkably low (0.42 +/- 0.04 micrograms/ml) but were restored toward normal by rhGH (12.55 +/- 4.78) or rhGH plus rhIGF-I (12.85 +/- 6.64) but not by rhIGF-I alone (0.85 +/- 0.25). Antibodies against rhGH were present at day 28, with titer being negatively related to weight gain, IGF-I, and ALS levels. All treatments increased serum IGFBP-3. The molecular size distribution of IGFBP-3 in rhGH-treated rats was similar to that of normal rats (IGFBP-3 in the 150K mol wt range), due to rhGH increasing serum ALS, but was altered by rhIGF-I (IGFBP-3 in the 200-300K and 44K mol wt range). In a GH-deficient animal, restoring the IGF/IGFBP-3/ALS axis towards normal is associated with greater growth promotion.

Animals↗
PubMed1982

[Ciliary immotility syndrome without situs inversus in 2 children].

The authors report two cases of immotile cilia syndrome occurring in two children without situs inversus. The two boys, 3 and 7 years old, had bronchiectasis, chronic sinusitis and recurrent upper airway infections. In the siblings, we found Kartagener's syndrome (sister of the first boy, and two sibs of the second). The diagnosis in the 2 cases was performed by study of ciliary motion in bronchial brushing. Ultrastructural examination of biopsies from bronchial mucosa showed specific defects of the axoneme.

Adolescent↗