Tomato fruit has assumed the status of 'functional food' due to the association between its consumption and a reduced likelihood of certain types of cancers and CVD. The nutraceutical value of tomatoes can be affected by the cultivation conditions, e.g. the phytochemical content of the fruits may increase with the establishment of beneficial mycorrhizal symbioses in the plants. A multidisciplinary study was carried out to gain knowledge on the antioxidant, oestrogenic/anti-oestrogenic and genotoxic activity of tomato fruits produced by mycorrhizal plants. The present results showed that the symbiosis positively affected the growth and mineral nutrient content of tomato plants and enhanced the nutritional and nutraceutical value of tomato fruits through modifications of plant secondary metabolism, which led to increased levels of lycopene in fruits obtained from mycorrhizal plants, compared with controls. Moreover, such changes did not result in the production of mutagenic compounds, since tomato extracts induced no in vitro genotoxic effects. Fruit extracts, both hydrophilic and the lipophilic fractions, originating from mycorrhizal plants strongly inhibited 17-b-oestradiol -human oestrogen receptor binding, showing significantly higher anti-oestrogenic power compared with controls. The present study shows that beneficial plant symbionts, such as mycorrhizal fungi, can lead to the production of safe and high-quality food, which is an important societal issue strongly demanded by both consumers and producers.
This paper describes the dental health status of Italian 4-year-olds in 2004/2005 and analyzes the association between caries in preschool children and some background characteristics in children and parents. Caries was recorded according to WHO criteria. 5,538 subjects were examined. Information on the children’s and their parents’ social, behavioral, ethnic and demographic status was obtained through a series of closed questions. Bivariate analysis was performed to investigate the association between caries and background characteristics. The probability of being an extra zero for the dmfs index was estimated via the zero-inflated negative binomial regression model (ZINB). 78.4% (95% CI = 77.2–79.6) of the children were caries-free. The national mean dmfs index was 1.36 (95% CI = 1.15–1.57), ranging from 1.22 (95% CI = 1.03–1.42) in the Italian North-East to 1.73 (95% CI = 0.83–2.63) in the South section. Significant bivariate associations between caries experience and risk factors were observed for parents’ nationality (not Italian vs. Italian: p < 0.001), parents’ educational levels (low vs. high: p < 0.001), preterm birth (yes vs. no: p = 0.011), prolonged breastfeeding (≤13 months vs. >13 months: p = 0.038) and early tooth eruption (<6 months as reference: p = 0.004). Multivariable analysis (ZINB) showed that children with a low caries risk level had a higher probability of being an extra zero; in particular, children from fathers with a high educational level showed a probability of being an extra zero of 0.22. The results suggest a need to plan preventive programs to reduce oral health disparities among Italian preschool children, based on educational intervention with parents and children concerning oral health and caries prevention.
No recent data on the experience of caries among Italian 12-year-olds are available. In 2004, an epidemiological survey called ‘National Pathfinder among Children’s Oral Health in Italy’ was promoted and carried out. This study reports the actual oral health status of Italian 12-year-olds according to gender, residence area and geographical distribution. Clinical examinations were carried out from March 2004 to April 2005, according to WHO criteria, and included dental caries (decay at the dentinal lesion level) and Community Periodontal Index (CPI). 5,342 children (2,670 males, 2,672 females) were examined by 7 ad hoc calibrated raters. Dental caries experience was found in 43.1% (95% CI 41.8–44.4%) of the study population. The mean DMFT score was 1.09 (95% CI 0.98–1.21). Significant differences (p < 0.05) were observed among geographical sections for DT, FT and DMFT. An inverse relationship was observed between mean DMFT and gross national product per capita (p < 0.001). Gingival bleeding was observed in 23.8% of children, while 28.7% had calculus. Significant differences in CPI scores among sections were found throughout the sample in both males and females (p < 0.001). Over the past two decades, mean DMFT fell from over 5 to its present level, halving every decade; consequently, the recorded level of dental caries has become aligned with that in other Western European countries. Nevertheless, differences in DMFT values remain between children from different socioeconomic backgrounds.
The recent revision of the taxonomy of ‘faecal streptococci’ prompted us to verify the importance of identifying the species of this group of cocci. During a study carried out to assess the hygienic quality of environmental samples from a variety of sources, we isolated 198 strains named faecal streptococci on the basis of conventional international tests (EVA broth multiple tube test) used for Public Health purposes. The predominant species were Enterococcus faecalis (39%) and Ent. faecium (29%), followed by Ent. durans/hirae, Ent. casseliflavus/gallinarum, Ent. raffinosus, with a different prevalence of the species depending on the source. Eighty‐four per cent of isolates were true faecal species. Only one isolate was identified as belonging to the Streptococcus genus. The authors stress the opportunity to identify the species. This may help to clarify the ecological and epidemiological characteristics of intestinal enterococci and streptococci in the environment, in drinking and recreational waters and their meaning as indicators of faecal pollution. All isolates were tested for their susceptibility to some antimicrobial agents widely used in medical therapy and the pattern was compared with the pattern of isolates from clinical specimens.
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