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Tea saponin and soy lecithin can produce smaller droplets of nanoemulsion than Whey protein isolate. Tea saponin has the same emulsifying ability as Tween 80. Presumably tea saponin-stabilized droplets may be maintained by electrostatic repulsion and steric repulsion. All of the nanoemulsions significantly improved the bioavailability of the mixed oil phase compared to the unemulsified oil phase. This study highlights the potential of natural surfactants in the ultrasonic preparation of nanoemulsions containing functional oils, and provides a basis for the application of natural surfactants and new functional oils in food industry.Red palm olein is known to be high in carotenes and vitamin E (tocols) and possess various nutritional benefits. This study evaluates the effect of prolonged heating using three common cooking techniques i.e. deep-fat fryer, microwave oven and conventional oven, on the profiles of carotenes and tocols as well as the physico-chemical changes occurring in red palm olein when compared to conventional palm olein. Physico-chemical changes in all oils were gauged based on their peroxide, p-anisidine and total oxidation values, acidity, and fatty acid composition. Both red palm olein and palm olein were thermally stable based on their lower rate of hydrolytic and oxidative degradations as well as higher tocols retention, which allow the oils to undergo heating up to 3 hours using deep-fat fryer and conventional oven. Nevertheless, red palm olein seemed not suitable for prolonged heating processes considering lower retention of carotenes. Microwave heating also influenced the stability of phytonutrients.Analyses of fatty acids were carried out in oil samples derived from white mustard. Two cultivars of white mustard (Sinapis alba L.) were evaluated 'Borowska', and 'Bamberka'. The oil content in the seeds of the tested cultivars was 276 and 290 g/kg, respectively. The oils obtained differed significantly in the composition of fatty acids. The oil from 'Borowska' contained less saturated fatty acids (4.86%) in comparison to 'Bamberka' (10.36%). The content of erucic acid was 22.2% in the 'Borowska' oil, while the oil from 'Bamberka' contained only 3.8% of this component. The research shows that the oil pressed from 'Borowska' can be used for technical purposes, and the oil derived from the cultivar 'Bamberka' can be used for food purposes due to the low content of erucic acid in the fatty acid composition and the beneficial fatty acid composition. As a component of diet, the low-erucic acid oil from the cultivar 'Bamberka' can be a source of unsaturated fatty acids (total 67.25%). The lower levels of linoleic (9.46 %) and linolenic (8.35%) acid, compared with 'Borowska' (respectively 12.5 and 10.5%), may contribute to increased oil oxidative stability during storage.MicroRNAs (miRNAs) regulate the functions of granulosa cells by interacting with their target mRNAs. Insulin receptor substrate 2 (IRS2) is one of the targets of miR-431 and can be regulated by ovarian hormones. However, the role of miR-431 and the associated signal transduction pathway in ovarian development has not been studied previously. https://www.selleckchem.com/products/ptc-209.html In this study, we first analyzed the expression of miR-431 and IRS2 following stimulation with pregnant mare serum gonadotropin (PMSG) during the estrous cycle or different stages of ovarian development in mice. Subsequently, we investigated the role, function, and signaling pathway of miR-431 in the human granulosa cell line, COV434. The results showed that follicle stimulating hormone (FSH) gradually decreased miR-431 levels, induced IRS2, and promoted pAKT expression. Moreover, miR-431 overexpression and IRS2 knockdown attenuated AKT activation, inhibited cell proliferation, and decreased estradiol (E2) and progesterone (P4) synthesis. Further, luciferase reporter assay demonstrated that IRS2 was a direct target of miR-431. In conclusion, this study demonstrated that miR-431 regulates granulosa cell function through the IRS2/PI3K/AKT signaling pathway.The mechanism by which the content of the major groups of seminal plasma proteins in stallion semen changes between the breeding and non-breeding seasons remains unknown. Here, we investigated the proportions of non-heparin-binding, phosphorylcholine-binding, and heparin-binding proteins in seminal plasma with the aim of relating them to sperm quality and testosterone levels in good and bad freezer stallions. Only minor variations in the major protein groups were found between the breeding and non-breeding seasons. In the non-breeding season, a higher content of a subset of non-heparin binding proteins as well as of heparin-binding proteins was found. Analysis of semen characteristics revealed a somewhat contrasting picture. While only minor variations in sperm kinematics and sperm morphology were found between seasons, the flow-cytometric measurements of mitochondrial membrane potential and also, to some extent, reactive oxygen species production indicated lower sperm quality in the breeding season. Chromatin integrity and testosterone levels were unchanged between seasons. The results suggest that stallion ejaculates could be used year-round for freezing, since only minor differences in protein composition exist between the breeding and non-breeding seasons, as well as between good and bad freezers. In addition, sperm quality is not impaired during the non-breeding season.BACKGROUND Additional benefits of posterior left atrial (LA) box isolation (BOXI) over pulmonary vein isolation (PVI) in persistent atrial fibrillation (perAF) have been reported, but the mechanism is still unclear. We evaluated the effects of BOXI on rotors and multiple wavelets in the whole LA.Methods and ResultsTwenty patients with perAF (including 12 cases of longstanding perAF) underwent PVI. Real-time phase mapping (ExTRa Mapping) was performed in the whole LA during AF. Subsequently, BOXI was added and re-ExTRa Mapping was performed again at the same site. The nonpassively activated ratio (%NP), the ratio of the form of rotors and multiple wavelets to the recording time, was compared before and after BOXI. After BOXI, the %NP significantly decreased in the anterior wall (from 53±22% to 39±23%, P=0.010), inferior wall (from 51±16% to 34±19%, P=0.001), and LA appendage (from 23±27% to 16±19%, P=0.049). However, there were no significant differences in the septum (49±19% vs. 49±18%, P=0.562) or lateral wall (41±19% vs.
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