Yeast strains and appropriate hydrolysis conditions were selected for efficient single cell protein (SCP) production from waste rapeseed meal. High potential for effective biomass production was observed for Yarrowia lipolytica LOCK0264 with 10 g of rapeseed meal at 4.9 × 108 ± 1.5 × 108 (2.91 logarithmic units). The highest yeast multiplication rate was obtained for Metschnikowia pulcherrima NCYC747 with 12.5 g of rapeseed meal and with 15 g of rapeseed meal at 1.6 × 108 ± 3.8 × 107 and 4.5 × 108 ± 4.0 × 107 (2.75 and 2.86 logarithmic units, respectively).
The obesity epidemic is one of the most serious health problems of the 21st century. The research conducted in this area has allowed for the identification of several factors causing obesity, including infectious agents. Adenovirus 36 (HAdV-D36) is the only known infectious agent to promote obesity in both humans and animals. The mechanisms by which this virus induces obesity in adults are known. However, to date, the effects of this virus on the developing embryo have not been described. In our study, we were able to confirm weight gain in infected HAdV-D36 chicken embryos (ECEs). In contrast to the course of infection in adults, infection in embryos does not result in an increase in body fat, but manifests itself as accelerated organogenesis. Histopathological analyses conducted by our team suggest the existence of another, yet unknown mechanism of the virus's influence on ECE.
Background: Healthcare workers (HCWs) are more exposed to influenza infection, and the influenza vaccination is recommended each year, to reduce the risk of influenza infection and prevent influenza transmission. This study is a cross-sectional study and the objectives were to determine the rate of influenza virus infection among HCWs in the 2019–2020 influenza season. Methods: Between January and March 2020, a survey was carried out in 2 hospitals and 15 primary health-care settings (PHCS) in Wroclaw (Poland). The novel point-of-care testing Flu SensDx device was used, which detects the M1 protein of the influenza virus using electrochemical impedance spectroscopy from biological material (throat/nasal swabs). Results: A total of 150 samples were collected. The majority of participating HCWs by profession were 83 physicians (55.3%) and half (51.3%) of the participating HCWs worked in PHCS. Influenza vaccination coverage was 61.3% in 2019–2020 and 46.0% in the 2018–2019 season for all participants. Of the participating HCWs, 44.0% were positive tested by the Flu SensDx device. There were no statistically significant differences among the positive tested HCWs, their influenza immunization history, and the presence of symptoms of influenza-like illness (p > 0.05). Conclusion: Although the results of the present study suggest that influenza vaccination does not reduce the frequency of influenza virus detection by Flu SensDx testing in the HCWs participants, larger studies are needed to estimate the incidence of influenza virus infection among HCWs to understand the underlying mechanism and fine-tune policies aimed at reducing nosocomial infections.
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