It's about time: Feeding competition costs of sociality are affected more by temporal characteristics than spatial distribution.

For most herbivorous animals, group-living appears to incur a high cost by intensifying feeding competition. These costs raise the question of how gregariousness (i.e.

Peer ambassador stories: formative qualitative research to enhance the reach of PrEP, HIV testing, and behavioral health treatments to LMSM in South Florida.

Existing HIV prevention interventions, such as pre-exposure prophylaxis (PrEP), and behavioral health treatments inadequately reach Latino men who have sex with men (LMSM) in the US. This study involved formative research to inform the content, design, and implementation of a scalable, low resource implementation strategy - peer ambassador stories - stories from peers to normalize using PrEP, HIV testing, and behavioral health treatment. We conducted semi-structured interviews with 20 LMSM to elucidate their content, design, and implementation preferences for peer ambassador stories.

Effects of two low-dose oral contraceptives containing ethinylestradiol and either desogestrel or levonorgestrel on serum lipids and lipoproteins with particular regard to LDL size.

This study was designed to determine the effects of two low-dose oral contraceptives, most frequently given in our area, monophasic desogestrel/ethinylestradiol (DG/EE) and triphasic levonorgestrel/ethinylestradiol (LNG/EE), on lipoprotein parameters, especially LDL particle size and HDL subclass distribution (determined by lipid-stained 2%-20% polyacrylamide gradient gel electrophoresis) in 37 healthy normolipidemic women aged 19 to 27 years. Lipid and lipoprotein parameters were measured before the start of treatment and in the third month of oral contraceptive use. Results reflected the estrogen-progestin balance.

Plasma fatty acid status in Moroccan children: increased lipid peroxidation and impaired polyunsaturated fatty acid metabolism in protein-calorie malnutrition.

In previous studies on plasma fatty acid and antioxidant status in 29 malnourished Moroccan children (12 with mild protein-calorie malnutrition, 17 with severe protein-calorie malnutrition) compared to 15 healthy control children from the same area, we pointed out that these populations were heterogeneous in terms of their essential fatty acid and antioxidant status. The aim of the present study was to classify the children using the Waterlow classification and their essential fatty acid status. The discrepancies in lipid parameters, nutritional and inflammatory markers, blood oxidative indexes, antioxidant micronutrients or trace elements (selenium, zinc, vitamin E) related to polyunsaturated fatty acids were checked in these populations.

[Effects of oral contraceptive preparations and smoking on lipoprotein repartition].

We studied the effect of oral contraceptives and smoking on the lipid profile of 251 women and 72 men, 20-29-year-old. In women, taking estroprogestatives, cholesterol, triglycerides, apoproteins AI and B were higher than in controls; HDL-cholesterol was not modified. Lipoprotein analyses in polyacrylamide gradient gel exhibited an increase of the HDL3 fraction at the expense of the HDL2 fraction, with a reduced LDL size.