49 research outputs found
Egg Quality, Sensory Attributes, and Protein Metabolites of Laying Hens Fed Whole Flaxseed, Fish Oil, and Different Sources of Trace Elements
No full textThis study evaluated the effects of whole flaxseed (WFS), fish oil (FO), and different sources of Se, Zn, and Fe (inorganic, organic, and nano-source) on egg production, quality, sensory attributes, and serum protein metabolites in laying hens. A total of 144 hens were divided into six groups with six replicates of four hens each. Hens were fed six diets as follows: 1) control diet; 2) 7.5%WFS+1.5%FO; 3) 7.5%WFS+1.5%FO+175 mg/kg vitamin E (VE); 4) 7.5%WFS+1.5%FO+175 mg/kg VE + inorganic sources of Se, Zn, and Fe (ISeZnFe); 5) 7.5%WFS+1.5%FO+175 mg/kg VE + organic sources of Se, Zn, and Fe (OSeZnFe); 6) 7.5%WFS+1.5%FO+175 mg/kg VE + nano-source of Se, Zn, and Fe (NSeZnFe) from 40–50 weeks of age. Laying hens fed 7.5% WFS, 1.5% FO, and different sources of trace elements in their diets had no negative effects on laying rate, egg weight, egg mass, feed intake, feed conversion ratio, body weight change, or survival rate compared to that of hens fed the control diet. Dietary treatments did not negatively affect the external and internal egg characteristics or egg sensory attributes. Feeding 7.5%WFS+1.5%FO+VE+ISeZnFe positively influenced yolk color in fresh eggs. Dietary treatments had a significant impact on egg nutritional composition, with the highest levels of macronutrients found in eggs from hens fed the 7.5%WFS+1.5%FO+VE+NSeZnFe treatment. The highest plasma globulin concentrations were observed in hens fed organic and nano-source trace elements. The same diets reduced plasma uric acid levels. Based on these findings, the inclusion of organic or nano-source trace minerals in diets containing WFS and FO positively affected egg quality and hen protein metabolites
“Modes of mediation” for conceptualizing how different roles for accountants are made present
No full textEnhancement of Egyptian soft white cheese shelf life using a novel chitosan/carboxymethyl cellulose/zinc oxide bionanocomposite film
No full textInternational audienceA novel bionanocomposites packaging material prepared using chitosan (CH), carboxymethyl cellulose (CMC), and zinc oxide nanoparticles (ZnO-NPs), namely CH/CMC/ZnO bionanocomposites, was prepared by casting method. The CH/CMC/ZnO bionanocomposites were investigated using FT-IR, TEM, SEM, XRD, and TGA. The acquired bionanocomposites exhibited improved mechanical and thermal properties compare with the biocomposites (CH/CMC) blend. The soft white cheese were manufactured, packaged within the prepared bionanocomposites films and stored at 7°C for 30days. The influence of packaging material on packaged cheese (rheological properties, colour measurements, moisture, pH and titratable acidity) were assessed. Furthermore, the effect of packaging material on the total bacterial counts, mold & yeast and coliform in cheese was evaluated. The prepared bionanocomposites displayed good antibacterial activity against gram positive (Staphylococcus aureus), gram negative (Pseudomonas aeruginosa, Escherichia coli) bacteria and fungi (Candidia albicans). Moreover, the packaging films assisted in increasing the shelf life of white soft cheese. Therefore, it can be used in food packaging applications
Emerging nanoporous anodized stainless steel for hydrogen production from solar water splitting
No full textEvaluation of bionanocomposites as packaging material on properties of soft white cheese during storage period
No full textInternational audienceNovel bionanocomposites based on chitosan/poly(vinyl alcohol)/titanium nanoparticles (CS/PVA/TiO2 nanocomposite) were prepared and used as packaging materials for soft white cheese. The prepared bionanocomposites were characterized using XRD, SEM, TEM and FT-IR. The CS/PVA/TiO2 bionanocomposites exhibited good mechanical properties. Furthermore, the obtained bionanocomposites exhibited superior antibacterial activity against gram positive (Staphylococcus aureus), gram negative (Pseudomonas aeruginosa, Escherichia coli) bacteria and fungi (Candidia albicans). The soft white cheese was manufactured and packaged within the CS/PVA/TiO2 nanocomposite films and stored at 7 °C for 30 days. The color, rheological and chemical properties of cheese were evaluated, also the influence of CS/PVA/TiO2 bionanocomposites on microbiological analysis of soft white cheese was assessed, the results indicated that the total bacterial counts, mold & yeast and coliform decreased with the increasing storage period and disappeared at the end of storage period compared with control. Consequently, CS/PVA/TiO2 bionanocomposite can be used in food packaging applications
Correlation of hypoxia-inducible factor-1 alpha (HIF-1α) and vascular endothelial growth factor (VEGF) expressions with clinico-pathological features of oral squamous cell carcinoma (OSCC)
No full textAbstractOral squamous cell carcinoma (OSCC) is a characteristic aggressiv e tumor representing a significant public health threat all over the world. Up to 50–60% of solid tumors may exhibit hypoxic tissue areas that are heterogeneously distributed within the tumor stroma. Hypoxia inducible factor-1α (HIF-1α) is a central regulator in the adaptive cellular response to hypoxia; however its role is still uncovered. Vascular endothelial growth factor (VEGF) is an important molecule playing crucial role not only in inflammation, but also in angiogenesis and thus tumor growth and progression. So, the aim of this work is to investigate the expression of HIF-1α and VEGF in OSCC and correlate their expressions with clinical and histopathological features of OSCC. In this work, tissue specimens from a total of 45 cases with OSCC were stained immunohistochemically with HIF-1α and VEGF antibodies and examined microscopically.The results of this study revealed that HIF-1α and VEGF expressions appeared to be significantly positive and directly related to histopathological grades, lymph node (LN) status as well as clinical stages of OSCC. Moreover, HIF-1α expression was significantly correlated to angiogenic activity measured by VEGF immunostaining. Thus, it was concluded that HIF-1α and VEGF expressions were up-regulated with increased malignancy and can be used as predictive markers of tumor behavior
Bifunctional Tailoring of Platinum Surfaces with Earth Abundant Iron Oxide Nanowires for Boosted Formic Acid Electro-Oxidation
No full textTo expedite the marketing of direct formic acid fuel cells, a peerless inexpensive binary FeOx/Pt nanocatalyst was proposed for formic acid electro-oxidation (FAO). The roles of both catalytic ingredients (FeOx and Pt) were inspired by testing the catalytic performance of FAO at the FeOx/Au and FeOx/GC analogies. The deposition of FeOx proceeded electrochemically with a post‐activating step that identified the catalyst’s structure and performance. With a proper adaptation for the deposition and activation processes, the FeOx/Pt nanocatalyst succeeded to mitigate the typical CO poisoning that represents the principal element deteriorating the catalytic performance of the direct formic acid fuel cells. It also provided a higher (eightfold) catalytic efficiency than the bare Pt substrates toward FAO with a much better durability. Field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) were all employed to inspect, respectively, the surface morphology, bulk composition, and crystal structure of the catalyst. The electrochemical impedance spectra could correlate the charge transfer resistances for FAO over the inspected set of catalysts to explore the role of FeOx in mediating the reaction mechanism
Assessment of acute poisoning in children using poisoning severity scores: A cross-sectional study at Damietta General Hospital Egypt
No full textAcute poisoning is a prevalent health issue, particularly among children, due to their natural curiosity and tendency to explore. This cross-sectional study aimed to evaluate the characteristics, causes, clinical presentation, and outcomes of acute intoxication in children at Damietta General Hospital, Egypt. We included 106 pediatric patients (aged under 18 years) with a clear history or clinical signs of acute poisoning. Data collection encompassed sociodemographic information, type of poison, mode of poisoning, and clinical outcomes. Poison Severity Score (PSS) was employed to assess the severity. The most affected age group was preschool children (3–6 years), accounting for 41.5 % of cases, with males representing 52.8 %. Accidental poisoning constituted 83 % of cases, with household cleaning products (34 %) and petroleum products (18.9 %) being the most common toxic agents. Clinical outcomes revealed that 33 % of patients experienced morbidity, with electrolyte imbalances being the most prevalent complication. The overall cure rate was 94.3 %, while the mortality rate was 5.7 %. This study highlights the significance of parental education and preventive measures, especially in rural areas, to reduce the risk of pediatric poisoning. The PSS proved useful in guiding clinical care, supporting its further use in pediatric toxicology settings
Cardiovascular effects and clinical outcomes in acute opioid toxicity: A case-control study from Port Said and Damietta Governorates Egypt
No full textSubstance abuse, particularly opioid intoxication, presents a significant public health challenge, leading to severe cardiovascular complications. This case-control study assessed the cardiac profile and clinical outcomes of 51 patients with confirmed acute opioid toxicity, compared to 51 control participants, in general hospitals across Port Said and Damietta governorates, Egypt. The study revealed that opioid-intoxicated patients exhibited significant cardiovascular abnormalities, including hypotension (39.2 %) and electrocardiogram (ECG) changes (72.5 %), with sinus bradycardia (51 %) being the most common. Additionally, echocardiographic abnormalities were found in 40 % of cases, with abnormal regional wall motion and valvular defects observed in several patients. Elevated levels of cardiac enzymes, such as Troponin-I and CK-MB, were significantly correlated with increased ICU stay length and higher mortality rates. The most common morbidities included coma (64.7 %) and shock (39.2 %). The study underscores the critical need for early cardiac assessment in opioid-intoxicated patients to predict clinical outcomes and guide therapeutic interventions
In vivo and in vitro assessment of the anti-mycoplasma activity of Curcumin nanoparticles and their impact on health and performance of broiler chickens
No full textGlobally, the poultry production industry is growing at a rapid pace. Mycoplasma is a disease that causes an enormous financial loss to the poultry farming industry. Lately, there have been reports of avian mycoplasmosis resistance to multiple antibiotics especially macrolides. Thus, the purpose of this work was to assess the antibacterial activity of curcumin nanoparticles (Curcumin-NPs) against Mycoplasma synoviae (MS) and Mycoplasma gallisepticum (MG) in vitro and in vivo as a possible alternative for antibiotics. In vitro investigations were used to determine the curcumin-NPs' minimum inhibitory concentration (MIC) versus MG and MS. To conduct in vivo research, 216 birds were divided into nine groups, each consisting of 24 birds in triplicate and 8 birds apiece. The groups were as follows: G1 was given an MG challenge; G2 received an MG challenge and 0.5% curcumin-NPs; G3 received an MG challenge and 1% curcumin-NPs; G4 MG challenged and treated with tilmicosin, G5 challenged with MS; G6 infected with MS and supplied with 0.5% curcumin-NPs; G7 infected with MS and supplied with 1% curcumin-NPs; G8 received an MS challenge and treated with tilmicosin and G9 were the control negative group. The conclusion is that Curcumin-NPs demonstrated in vitro anti-mycoplasma activities; adding 1% curcumin-NPs to the drinking water for five days was a much more potent treatment than adding 0.5% curcumin-NPs and tilmicosin for the control of MG and MS infections in broiler chickens; the treated birds showed improved lipid profiles, better FCR, body weight gain, and a noticeable decrease in the sternness of clinical manifestations as well as lesions score. Additionally, a notable enhancement in renal function (urea & creatinine), hepatic enzymes (ALT & AST), and antioxidant status (Catalase, GSH, and MDA). There has also been a notable advancement in lipid profile. For five days, the use of 1% curcumin-NPs in the drinking water is advised as a secure and efficient treatment for avian mycoplasmosis in broiler chickens
