EFFECTS OF CITRUS ESSENTIAL OILS ON THE MICROBIOLOGICAL SAFETY OF PRIMO SALE CHEESE

In the last years, the consumers demanding foods with no chemical preservatives for food conservation, determined an interest by the food industries for the use of natural biopreservatives. Several essential oils from various plants and fruits have been characterized for their antibacterial activities in order to select new biopreservatives. The aim of this work was to evaluate the organoleptic effect of citrus essential oils to be applied in the processing of sheeps’ milk “Primo Sale” cheese and the inhibitory effect on the main bacterial pathogens of dairy interest. In order to better evaluate the antibacterial effect, the first approach was based on pasteurized milk, in view of the future application in raw milk cheese production. Three industrial citrus essential oils (EOs) extracted by cold pressing of the citrus peels were tested: Orange [Citrus sinensis (L.) Osbeck] Lemon [Citrus limon (L.) Osbeck] and Tangerine [Citrus reticulata Blanco]; sheep bulk milk was pasteurized for 30 min at 60°C. Each EO was tested at two different concentrations 100 and 200 µl/l of milk. For each dose two cheese makings were made: one production was not added with pathogenic bacteria to evaluate the organoleptic characteristics, while the second production was added with 30 CFU/mL of Listeria monocytogenes 24B0 and Salmonella typhimurium 50431 and 103 CFU/mL of Escherichia coli C45/1245 and Staphylococcus aureus PSS52. All cheeses were obtained by coagulation with 0.3 mL/L of microbial rennet (Fromase® 220 TL, DSM Bright Science Brighter Living, Heerlen, UK) and acidification by means of the starter culture Lactococcus lactis CAG4 and CAG37 10 mL/L to reach a final concentration of 106 CFU/ml in milk. Four cheese makings without EOs were used as control trials and prepared as follows: only rennet; rennet plus pathogenic bacteria; rennet plus starters; and rennet plus pathogenic and starters. Cheese samples were homogenised with a stomacher (BagMixer® 400, Interscience, Saint Nom, France). Microbial suspensions were plated and incubated as follows: Lactic acid bacteria cocci on M17 agar, incubated anaerobically at 30°C for 48 h; L. monocytogenes on Listeria selective agar base incubated at 37°C for 48 h; Escherichia coli and S. typhimurium were both detected on Hektoen enteric agar incubated at 37°C for 24 h; St. aureus on Baird Parker and incubated at 37°C for 48 h. Although in vitro tests showed a certain inhibition against especially, the Gram positive bacteria, but also towards Salmonella spp. none of the two Gram negative pathogens was inhibited in cheeses. Optimal results were registered against L. monocytogenes which was inhibited of almost 3 Log cycles by all EOs at both concentrations tested. St. aureus was not inhibited by orange EO, while 1-2 Log cycles lower than control (only pathogens) were found in EO cheeses. The inhibitory effect could also be due to the competitions for nutrients due to the most rapid growth of Lc. lactis. However, the difference registered among orange and the other two citrus EO trials highlighted the in vivo antibacterial activity of lemon and mandarin EOs. Sensory tests are being prepared to evaluate the appreciation by judges

Tracking the transfer of antimicrobial resistance genes from raw materials to sourdough breads

The present study hypothesizes that raw materials used in bread making can transfer antibiotic resistance genes (ARGs) to processed breads. Four types of flour and four types of semolina were purchased from supermarkets and inoculated with a commercial dried sourdough starter to make breads. The microbiological characteristics of all raw materials and fermented doughs were investigated. The levels of yeasts and lactic acid bacteria (LAB) increased up to 107 CFU/g. The values of pH decreased to 4.54–4.86 while total titratable acidity increased inversely. All unprocessed and processed samples, including breads, were analyzed by a molecular approach to detect bacterial and fungal DNAs and 17 antibiotic resistance genes for penicillins, macrolides, tetracyclines, and chloramphenicol. Illumina technology showed that the operational taxonomy units (OTUs) identified from unprocessed wheat milling products, fermented doughs, and baked products mainly belonged to Acetobacteraceae. Enterococci were present in all doughs. After baking, the relative abundance (RA)% of Enterococcus and Acetobacteraceae decreased. The DNA analyzed for fungal composition showed that Kazachstania humilis dominated dried sourdough starter and doughs, and its OTUs were also detected at high RA% in baked products. The search for ARGs revealed that all samples analyzed did not show resistance to penicillins, chloramphenicol, and macrolides. However, three of the semolinas included in this study (S1, S3 and S4) and the corresponding doughs (SD1, SD3 and SD4) were positive for tet(A) and tet(B) resistance genes. This work indicated that breads have a limited role in the dissemination of ARG

Tracking the transfer of antimicrobial resistance genes from raw materials to sourdough breads

The present study hypothesizes that raw materials used in bread making can transfer antibiotic resistance genes (ARGs) to processed breads. Four types of flour and four types of semolina were purchased from supermarkets and inoculated with a commercial dried sourdough starter to make breads. The microbiological characteristics of all raw materials and fermented doughs were investigated. The levels of yeasts and lactic acid bacteria (LAB) increased up to 107 CFU/g. The values of pH decreased to 4.54–4.86 while total titratable acidity increased inversely. All unprocessed and processed samples, including breads, were analyzed by a molecular approach to detect bacterial and fungal DNAs and 17 antibiotic resistance genes for penicillins, macrolides, tetracyclines, and chloramphenicol. Illumina technology showed that the operational taxonomy units (OTUs) identified from unprocessed wheat milling products, fermented doughs, and baked products mainly belonged to Acetobacteraceae. Enterococci were present in all doughs. After baking, the relative abundance (RA)% of Enterococcus and Acetobacteraceae decreased. The DNA analyzed for fungal composition showed that Kazachstania humilis dominated dried sourdough starter and doughs, and its OTUs were also detected at high RA% in baked products. The search for ARGs revealed that all samples analyzed did not show resistance to penicillins, chloramphenicol, and macrolides. However, three of the semolinas included in this study (S1, S3 and S4) and the corresponding doughs (SD1, SD3 and SD4) were positive for tet(A) and tet(B) resistance genes. This work indicated that breads have a limited role in the dissemination of ARGs

In-depth investigation of the safety of wooden shelves used for traditional cheese ripening

The main goal of this research was to characterize the bacterial diversity of the wooden boards used for aging traditional Sicilian cheeses and to evaluate whether pathogenic bacteria are associated with these surfaces. Eighteen cheese dairy factories producing three traditional cheese typologies (PDO Pecorino Siciliano, PDO Piacentinu Ennese, and Caciocavallo Palermitano) were selected within the region of Sicily. The wooden shelf surfaces were sampled by a destructive method to detach wood splinters as well as by a nondestructive brushing to collect microbial cells. Scanning electron microscopy showed the presence of almost continuous bacterial formations on the majority of the shelves analyzed. Yeasts and fungal hyphae were also visualized, indicating the complexity of the plank communities. The amplicon library of the 16S rRNA gene V3-V4 region was paired-end sequenced using the Illumina MiSeq system, allowing the identification of 14 phyla, 32 classes, 52 orders, 93 families, and 137 genera. Staphylococcus equorum was identified from all wooden surfaces, with a maximum abundance of 64.75%. Among cheese-surface-ripening bacteria, Brevibacterium and Corynebacterium were detected in almost all samples. Several halophilic (Halomonas, Tetragenococcus halophilus, Chromohalobacter, Salimicrobium, Marinococcus, Salegentibacter, Haererehalobacter, Marinobacter, and Idiomarinaceae) and moderately halophilic (Salinicoccus, Psychrobacter, and Salinisphaera) bacteria were frequently identified. Lactic acid bacteria (LAB) were present at low percentages in the genera Leuconostoc, Lactococcus, Lactobacillus, Pediococcus, and Streptococcus. The levels of viable microorganisms on the wooden shelves ranged between 2.4 and 7.8 log CFU/cm2. In some cases, LAB were counted at very high levels (8.2 log CFU/cm2). Members of the Enterobacteriaceae family were detected in a viable state for only six samples. Coagulase-positive staphylococci, Salmonella spp., and Listeria monocytogenes were not detected. Seventy-five strains belonged to the genera Leuconostoc, Lactococcus, Pediococcus, Enterococcus, Lactobacillus, and Weissella. IMPORTANCE This study provides evidence for the lack of pathogenic bacteria on the wooden shelves used to ripen internal bacterially ripened semihard and hard cheeses produced in Sicily. These three cheeses are not inoculated on their surfaces, and surface ripening is not considered to occur or, at least, does not occur at the same extent as surface-inoculated smear cheeses. Several bacterial groups identified from the wooden shelves are typically associated with smear cheeses, strongly suggesting that PDO Pecorino Siciliano, PDO Piacentinu Ennese, and Caciocavallo Palermitano cheese rind contributes to their final organoleptic profiles

Efecto mediado por progesterona sobre la actividad metabólica de sistemas nigroestriatales lesionados con 6 OH dopamina en ratas macho.

En trabajos previos realizados en nuestro laboratorio se encontró que en ratas macho lesionadascon 6OH-Dopamina, se verifican disfunciones motoras y alteraciones en la actividad de distintossistemas neuronales estriatales. También se mostró que el tratamiento con progesterona (P4) s.c.revierte algunos de estos efectos por lo que podría ser una molécula neuroprotectora.Hipotetizamos que estos cambios podrían reflejarse en la actividad metabólica (AM) neuronal encuerpo estriado izquierdo (CEi) y sustancia nigra izquierda (SNi), zonas lesionadas con 6OHDopaminade nuestro modelo experimental

Pass This Message Along: Self-edited Email Messages Promoting Colon Cancer Screening among Friends and Family

Encouraging communication within a social network may promote uptake of desired medical services or health behaviors. Little is known about the use of this approach to promote colorectal cancer (CRC) screening. We conducted in-person interviews with 438 insured adults ages 42-73 in Massachusetts, Hawaii, and Georgia. Participants were shown a sample message in which the sender shares that he has completed a colonoscopy and urges the recipient to discuss CRC screening with a doctor. We asked participants to edit the message to create one they would be willing to send to friends and family via email or postcard. Changes to the message were recorded. Edited text was analyzed for content and concordance with original message. The majority of participants (61.6%) modified the message; 14.2% added to or reframed the existing personalizing words (e.g. adding ‘because I love you’), 10.3% added urgency to the message (e.g. “please don’t delay”) and 8% added reassurance (e.g. “It’s really not that bad.”) Almost one in five (18.3%) deleted a negatively framed sentence on colon cancer risks. In 5.7% of cases, the meaning of at least one sentence was changed but only 2.7% created messages with factual inaccuracies. Modifiable messages transmitted within a social network offer a way for screened individuals to promote CRC screening. Further study is needed to identify the optimal combination of user-generated content and pre-written text, allowing for creation of messages that are acceptable to senders, persuasive and factually accurate

Medical workforce planning in a changing health context: Comparison between Italy and Europe

An increasing need for healthcare workers as been estimated worldwide. To provide a comprehensive framework of the medical workforce in Italy, we investigated the post-lauream medical workforce training supply and demand. Further, a comparison of the medical workforce between Italy and other European Countries with a similar epidemiological and/or demographic context was performed. The distribution of pre-and post-lauream medical educational providers and post-lauream resources in place in Italy was analyzed among Italian macro-areas in the academic years 2015-2016, 2016-2017 and 2017-2018.Italy and the European countries in study were compared in term of post-lauream funding and number of active physicians by specialization per 1,000 inhabitants. Open access data from official Italian and European institutional sources were used. The most of medical schools were distributed in the North, followed by South, islands and Central Italy, while the highest enrolment rate in the pre-lauream medical education was reported in Central Italy, followed by South & islands and North. The total number of active residency programs increased from 1092 to 1286 in the three considered academic years, while number of post-lauream training contracts decreased from 11.0 to 10.2 per 100,000 inhabitants. A misalignment between contracts assigned to residency programs and grants assigned to general practitioners specific courses was observed. Furthermore, when compared to the EU countries in study, Italy documented the lowest number of post-graduated training positions in 2015, with a rate of 12.1/100,000 inhabitants. Also, an excess of medical specialists (3.06 per 1,000 inhabitants) with a simultaneous shortage of general practitioners (0.89 per 1,000 inhabitants) was reported. On the contrary, Italy documented the highest number of paediatric practitioners. More efforts, including the implementation of adequate tools, are required both at national and regional level in order to provide a medical workforce planning in line with a continuously changing health context

Medical workforce planning in a changing health context: Comparison between Italy and Europe

An increasing need for healthcare workers as been estimated worldwide. To provide a comprehensive framework of the medical workforce in Italy, we investigated the post-lauream medical workforce training supply and demand. Further, a comparison of the medical workforce between Italy and other European Countries with a similar epidemiological and/or demographic context was performed. The distribution of pre-and post-lauream medical educational providers and post-lauream resources in place in Italy was analyzed among Italian macro-areas in the academic years 2015-2016, 2016-2017 and 2017-2018.Italy and the European countries in study were compared in term of post-lauream funding and number of active physicians by specialization per 1,000 inhabitants. Open access data from official Italian and European institutional sources were used. The most of medical schools were distributed in the North, followed by South, islands and Central Italy, while the highest enrolment rate in the pre-lauream medical education was reported in Central Italy, followed by South & islands and North. The total number of active residency programs increased from 1092 to 1286 in the three considered academic years, while number of post-lauream training contracts decreased from 11.0 to 10.2 per 100,000 inhabitants. A misalignment between contracts assigned to residency programs and grants assigned to general practitioners specific courses was observed. Furthermore, when compared to the EU countries in study, Italy documented the lowest number of post-graduated training positions in 2015, with a rate of 12.1/100,000 inhabitants. Also, an excess of medical specialists (3.06 per 1,000 inhabitants) with a simultaneous shortage of general practitioners (0.89 per 1,000 inhabitants) was reported. On the contrary, Italy documented the highest number of paediatric practitioners. More efforts, including the implementation of adequate tools, are required both at national and regional level in order to provide a medical workforce planning in line with a continuously changing health context

The Association Between Low Health Literacy and Attitudes, Behaviors and Knowledge that Influence Engagement in Cancer Screening and Prevention Activities

Background: Health literacy is a complex, multifaceted phenomenon. While health literacy has historically been measured using instruments that assess reading and numeracy, comprehension of spoken information is also important. The purpose of this study was to identify adults with low health literacy using a multi-dimensional assessment of health literacy and to explore whether low health literacy was associated with variables likely to affect engagement in cancer prevention and screening activities. Methods: A random sample of English speaking adults aged 40-70 were invited to participate from: Kaiser Permanente Georgia, Hawaii, Colorado, and Fallon Community Health Plan Massachusetts. The Cancer Message Literacy Test-Listening, the Cancer Message Literacy Test-Reading, and the Lipkus Numeracy Scale were all used to assess aspects of health literacy. We also assessed self-efficacy, provider trust, and fatalism. Participants self-reported demographic data, health seeking behavior, and media use. Results: Out of 1074 adults, 48% were white, 73% were educated beyond high school, and 53% rated their health as very good or excellent. Compared to others, adults with low health literacy were more likely to avoid physician visits (p \u3c .001), more fatalistic about cancer (p Conclusions: In this population of insured adults, we identified differences among adults with low health literacy which may impact their engagement in cancer prevention and screening activities. These findings have important implications for health care interactions and public health communication. Understanding the reasons for these beliefs and behaviors may suggest ways to target and tailor communication for this vulnerable population

Heterogenous forms of dyslipidemiain women with polycystic ovary syndrome

Forms of dyslipidemia are very common in individuals affected by polycystic ovary syndrome (PCOS), but in addition to plasmatic lipids, it is necessary to evaluate the alterations in the atherogenic lipoproteins (Lp) and apolipoproteins (apo). In our study we measured the concentrations of apoB, Lp(a) and low density lipoproteins (LDL) in 42 patients with PCOS (age: 28 +/- 7 years, body mass index: 27 +/- 5 kg/m-) and 37 healthy women (of the same age and body mass index). Methods: values of Lp(a) >30 mg/dl were considered high, whereas for apoB, values >100 g/l were considered high. Results: the patients with PCOS showed an increase in triglycerides (p=0.0011) and low levels of high density lipoproteins (HDL) (p=0.0131), but the total cholesterol and the LDLs were not significantly different to those of the control group. High levels of Lp(a) were found in 24% of the individuals with PCOS, and a smaller number showed high levels of apoB (14%). This analysis shows that the concentrations of Lp(a) are only correlated to the HDL levels (r =0.378, p= 0.0431). 36% of the patients with PCOS with normal levels of plasmatic lipids show high levels of Lp(a) and apoB, and small and dense LDLs. Conclusions: alterations in the plasmatic lipids are present in 1/3 of the women affected by PCOS. More research is necessary to better understand the mechanisms responsible to reduce the risk of cardiovascular problems in young women with polycystic ovary syndrome