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Objective: To assess the association between the consumption of ultra-processed foods (UPF) and diet quality among preschool children and women of reproductive age from Argentina., Design: Cross-sectional and nationally representative survey. The food items were classified according to the NOVA system. Consumption of fruits, vegetables, legumes, nuts, seeds and wholegrains was estimated, and the energy and nutrients related to non-communicable disease (NCD) intake. Linear regression was used to assess the associations., Setting: Argentina., Participants: Children aged 2-5 years ( n 7022), female adolescent aged 10-19 years ( n 2165) and women aged 20-49 years ( n 4414)., Results: UPF represented more than a quarter of total energy intake, 27 % in children, 31 % in female adolescents and 26 % in women. Across all age groups, the major contributors to UPF consumption were cookies and pastries (about 6·0-7·0 %), soft drinks (about 2·7-3·7 %), candies (about 1·8-4·6 %), and juices (about 1·3-1·7 %). The consumption of fresh vegetables, fresh fruits and legumes was negatively associated with UPF consumption. A significant positive association was found between the dietary share of UPF and the dietary content of NCD-promoting nutrients such as free sugars and total saturated and trans -fats. In contrast, a significant negative association was found with the content of NCD-protective such as fibre and protein., Conclusions: UPF were associated with lower consumption of healthy foods and higher intake of nutrients related to NCD in children and women of reproductive age in Argentina. It is necessary to design food policies that simultaneously reduce the consumption of UPF while promoting the intake of fresh and whole foods to improve the dietary quality.

Objective: To assess the prevalence of five forms of malnutrition (wasting/underweight, overweight, obesity, stunting/short stature and anaemia) by socio-economic wealth (SEW) and educational level (EL) among children, adolescents and women of reproductive age in Argentina., Design: Analysis from a cross-sectional survey. Anthropometric indicators and prevalence of anaemia were estimated. SEW was classified according to the proportion of contributors in the household, employment status, EL and medical coverage. EL was categorized by years of formal education., Setting: National Health and Nutrition Survey, 2005., Participants: Children (n 27 015) <5 years, adolescent girls (n 1729) 11-19 years, women (n 4401) 20-49 years., Results: In Argentina, 26 % of households lived with unsatisfied basic needs and 23 % received at least one form of food assistance. Any form of malnutrition affected 23 % of children, 36 % of girls and 56 % of women. Children were especially affected by anaemia, overweight/obesity and stunting (15·2, 9·9, 7·4 %, respectively). Girls were affected by overweight/obesity, anaemia and stunting (22·5, 15·2, 6·2 %). Women were strongly affected by overweight/obesity, anaemia and stunting (43·8, 19·8, 10·5 %). Stunting or short stature was higher in low-SEW settings, doubling in prevalence between low and high levels, increasing four times among women in reproductive age (P < 0·05). Excess weight among children was higher in high-SEW settings, in women the tendency was inverse. Anaemia showed different tendency according to SEW., Conclusions: In 2005, Argentina had high rates of excess weight and anaemia, moderate prevalence of stunting and low frequency of wasting/underweight. All forms of malnutrition showed a strong relationship with socio-economic and educational inequality.

The intestinal ecosystem contains a normal microbiota, non-immune cells and immune cells associated with the intestinal mucosa. The mechanisms involved in the modulation of the gut immune system by probiotics are not yet completely understood. The present work studies the effect of a fermented milk containing probiotic bacterium Lactobacillus (Lb.) casei DN114001 on different parameters of the gut immune system involved with the nonspecific, innate and adaptive response. BALB/c mice received the probiotic bacterium Lb. casei DN114001 or the probiotic fermented milk (PFM). The interaction of the probiotic bacteria with the intestine was studied by electron and fluorescence microscopy. The immunological parameters were studied in the intestinal tissue and in the supernatant of intestinal cells (IC). Results showed that the probiotic bacterium interact with the IC. The whole bacterium or its fragments make contact with the gut associated immune cells. The PFM stimulated the IC with IL-6 release, as well as cells related to the nonspecific barrier and with the immune cells associated with the gut. This last activity was observed through the increase in the population of different immune cells: T lymphocytes and IgA+ B lymphocytes, and by the expression of cell markers related to both innate and adaptive response (macrophages). PFM was also able to activate the enzyme calcineurine responsible for the activation of the transcriptional factor NFAT. PFM induced mucosal immune stimulation reinforcing the non-specific barrier and modulating the innate immune response in the gut, maintaining the intestinal homeostasis.