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https://www.readbyqxmd.com/read/28528111/protection-of-%C3%AE-carotene-from-chemical-degradation-in-emulsion-based-delivery-systems-using-antioxidant-interfacial-complexes-catechin-egg-white-protein-conjugates
#1
Luping Gu, Yujie Su, Mengqi Zhang, Cuihua Chang, Junhua Li, David Julian McClements, Yanjun Yang
The aim of the present study was to fabricate catechin-egg white protein (CT-EWP) conjugates as novel food-grade antioxidant emulsifiers designed to improve the physicochemical stability of β-carotene (BC) emulsions. CT-EWP conjugates were synthesized using free radical grafting, and the formation of conjugates was confirmed by electrophoresis and liquid chromatography-mass spectrometry. The physicochemical stability of BC emulsions was characterized by measuring alterations in particle size, ζ-potential and BC retention...
June 2017: Food Research International
https://www.readbyqxmd.com/read/28499203/efficient-protein-digestion-using-immobilized-trypsin-onto-tannin-modified-fe3o4-magnetic-nanoparticles
#2
Keziban Atacan, Bekir Çakıroğlu, Mahmut Özacar
Fe3O4 magnetic nanoparticles (MNPs) were prepared via solvothermal method. A commercially available trypsin was covalently immobilized onto MNPs modified with tannin (T) via a novel binding process. The morphology, structure, surface and magnetic properties of the obtained nanostructures were characterized comprehensively. The Fe3O4 MNPs had a saturation magnetization value of 60.18emu/g at room temperature, while the tannin modified Fe3O4 MNPs, and the trypsin immobilized on tannin modified-Fe3O4 MNPs possessed a saturation magnetization value of 57...
May 1, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28479482/embryonic-expression-of-festina-lente-fel-a-novel-maternal-gene-in-the-oligochaete-annelid-tubifex-tubifex
#3
Takuma Nakamura, Inori Shiomi, Takashi Shimizu
We have cloned and characterized the expression of a novel maternal gene festina lente (designated Ttu-fel) from the clitellate annelid Tubifex tubifex. Northern blot analyses have shown that Ttu-fel mRNA is approximately 8 kbp in length and that its expression is restricted to oocytes undergoing maturation division and early embryos up to 22-cell stage. Maternal transcripts of Ttu-fel are first detected in oocytes in the ovary of young adults (ca. 40 days after hatching); its expression continues in growing oocytes in the ovisac...
May 4, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28470499/coffee-its-roasted-form-and-their-residues-cause-birth-failure-and-shorten-lifespan-in-dengue-vectors
#4
Hamady Dieng, Salbiah Binti Ellias, Tomomitsu Satho, Abu Hassan Ahmad, Fatimah Abang, Idris Abd Ghani, Sabina Noor, Hamdan Ahmad, Wan Fatma Zuharah, Ronald E Morales Vargas, Noppawan P Morales, Cirilo N Hipolito, Siriluck Attrapadung, Gabriel Tonga Noweg
In dengue mosquitoes, successful embryonic development and long lifespan are key determinants for the persistence of both virus and vector. Therefore, targeting the egg stage and vector lifespan would be expected to have greater impacts than larvicides or adulticides, both strategies that have lost effectiveness due to the development of resistance. Therefore, there is now a pressing need to find novel chemical means of vector control. Coffee contains many chemicals, and its waste, which has become a growing environmental concern, is as rich in toxicants as the green coffee beans; these chemicals do not have a history of resistance in insects, but some are lost in the roasting process...
May 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28466047/a-sensitive-haemadsorption-technique-based-rt-pcr-for-concentration-and-detection-of-newcastle-disease-virus-from-clinical-samples-and-allantoic-fluid
#5
Perumal Arumugam Desingu, Shambhu Dayal Singh, Kuldeep Dhama, Obli Rajendran Vinodhkumar, Yashpal Singh Malik
The present study describes the exploitation of haemadsorption (HAd) property of the Newcastle disease virus (NDV) for the development of a novel sensitive HAd technique based RT-PCR for detection of NDV from clinical samples of virus infected experimental birds. The NDV propagated allantoic fluid from the infected embryonated chicken eggs or supernatant of the processed clinical samples (tissue triturate, cloaca and tracheal swabs) from the experimentally infected birds were added with chicken red blood cells (RBC) to adsorb the virus on RBC's surface...
September 2016: Virusdisease
https://www.readbyqxmd.com/read/28455449/identification-of-a-new-sumo-interacting-motif-in-piasy
#6
Kawaljit Kaur, Hyewon Park, Nootan Pandey, Yoshiaki Azuma, Roberto N De Guzman
SUMO conjugation is a reversible post-translational modification process implicated in the regulation of gene transcription, DNA repair, and cell cycle. SUMOylation depends on the sequential activities of E1 activating, E2 conjugating, and E3 ligating enzymes. SUMO E3 ligases enhance transfer of SUMO from the charged E2 enzyme to the substrate. We have previously identified PIASy, a member of the Siz/PIAS RING family of SUMO E3 ligases, as essential for mitotic chromosomal SUMOylation in frog egg extracts and demonstrated that it can mediate effective SUMOylation...
April 28, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28430907/food-intake-affects-sperm-egg-fusion-through-the-gip-psg17-axis-in-mice
#7
Tatsunori Shimizu, Takehiro Sato, Katsushi Tsukiyama, Hiroki Fujita, Shunsuke Kato, Manabu Hoizumi, Hiromitsu Shirasawa, Takuma Narita, Yukihiro Terada, Yutaka Seino, Yuichiro Yamada
In addition to overeating, starvation also reduces fecundity in mammals. However, little is known about the molecular mechanisms linking food intake to fertility, especially in males. Gastric inhibitory polypeptide (GIP), which is released from intestinal K-cells after meal ingestion, stimulates insulin secretion from pancreatic β-cells through the action of incretin and has several extra-pancreatic effects. Here, we identified GIP receptor (Gipr) expression in mouse spermatids. Microarray analysis revealed that pregnancy-specific glycoprotein 17 (Psg17), a potential CD9-binding partner, was significantly decreased in GIP receptor-knockout (Gipr-/-) testes...
April 19, 2017: Endocrinology
https://www.readbyqxmd.com/read/28422159/spastic-paraplegia-linked-phospholipase-papla1-is-necessary-for-development-reproduction-and-energy-metabolism-in-drosophila
#8
Martina Gáliková, Peter Klepsatel, Judith Münch, Ronald P Kühnlein
The human PAPLA1 phospholipase family is associated with hereditary spastic paraplegia (HSP), a neurodegenerative syndrome characterized by progressive spasticity and weakness of the lower limbs. Taking advantage of a new Drosophila PAPLA1 mutant, we describe here novel functions of this phospholipase family in fly development, reproduction, and energy metabolism. Loss of Drosophila PAPLA1 reduces egg hatchability, pre-adult viability, developmental speed, and impairs reproductive functions of both males and females...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28407416/tau-based-fluorescent-protein-fusions-to-visualize-microtubules
#9
Paul Mooney, Taylor Sulerud, James Pelletier, Matthew Dilsaver, Miroslav Tomschik, Christoph Geisler, Jesse C Gatlin
The ability to visualize cytoskeletal proteins and their dynamics in living cells has been critically important in advancing our understanding of numerous cellular processes, including actin- and microtubule-dependent phenomena such as cell motility, cell division, and mitosis. Here we describe a novel set of fluorescent protein fusions designed specifically to visualize microtubules in living systems using fluorescence microscopy. Each fusion contains a fluorescent protein module linked in frame to a modified phospho-deficient version of the microtubule-binding domain of Tau (mTMBD)...
April 13, 2017: Cytoskeleton
https://www.readbyqxmd.com/read/28396152/evolutionary-origins-of-pectin-methylesterase-genes-associated-with-novel-aspects-of-angiosperm-pollen-tube-walls
#10
Simon Wallace, Joseph H Williams
The early evolution of angiosperms was marked by a number of innovations of the reproductive cycle including an accelerated fertilization process involving faster transport of sperm to the egg via a pollen tube. Fast pollen tube growth rates in angiosperms are accompanied by a hard shank-soft tip pollen tube morphology. A critical actor in that morphology is the wall-embedded enzyme pectin methylesterase (PME), which in type II PMEs is accompanied by a co-transcribed inhibitor, PMEI. PMEs convert the esterified pectic tip wall to a stiffer state in the subapical flank by pectin de-esterification...
April 7, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28394320/angiotensin-converting-enzyme-affects-the-presentation-of-mhc-class-ii-antigens
#11
Tuantuan Zhao, Kenneth E Bernstein, Jianmin Fang, Xiao Z Shen
Antigen processing and presentation through the MHC class II pathway is critical for activating T helper cells. Angiotensin-converting enzyme (ACE) is a carboxyl peptidase expressed by antigen-presenting cells. By analysis of ACE null (knockout), wild-type, and ACE-overexpressing (ACE10) mice and the antigen-presenting cells derived from these mice, we found that ACE has a physiological role in the processing of peptides for MHC class II presentation. The efficiency of presenting MHC class II epitopes from ovalbumin (OVA) and hen egg lysosome is markedly affected by cellular ACE levels...
April 10, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28358853/a-peptide-based-approach-to-evaluate-the-adaptability-of-influenza-a-virus-to-humans-based-on-its-hemagglutinin-proteolytic-cleavage-site
#12
Marco R Straus, Gary R Whittaker
Cleavage activation of the hemagglutinin (HA) protein by host proteases is a crucial step in the infection process of influenza A viruses (IAV). However, IAV exists in eighteen different HA subtypes in nature and their cleavage sites vary considerably. There is uncertainty regarding which specific proteases activate a given HA in the human respiratory tract. Understanding the relationship between different HA subtypes and human-specific proteases will be valuable in assessing the pandemic potential of circulating viruses...
2017: PloS One
https://www.readbyqxmd.com/read/28335741/high-throughput-sequencing-of-pituitary-and-hypothalamic-microrna-transcriptome-associated-with-high-rate-of-egg-production
#13
Nan Wu, Qing Zhu, Binlong Chen, Jian Gao, Zhongxian Xu, Diyan Li
BACKGROUND: MicroRNAs exist widely in viruses, plants and animals. As endogenous small non-coding RNAs, miRNAs regulate a variety of biological processes. Tissue miRNA expression studies have discovered numerous functions for miRNAs in various tissues of chicken, but the regulation of miRNAs in chicken pituitary and hypothalamic development related to high and low egg-laying performance has remained unclear. RESULTS: In this study, using high-throughput sequencing technology, we sequenced two tissues (pituitary and hypothalamus) in 3 high- and 3 low-rate egg production Luhua chickens at the age of 300 days...
March 23, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28325896/egg-antigen-p40-of-schistosoma-japonicum-promotes-senescence-in-activated-hepatic-stellate-cells-via-skp2-p27-signaling-pathway
#14
Tianhua Xu, Jinling Chen, Dandan Zhu, Liuting Chen, Jianxin Wang, Xiaolei Sun, Bin Hu, Yinong Duan
Schistosomiasis is characterized by egg deposition, granulomatous inflammatory reaction and then subsequent hepatic fibrosis formation. Activated HSCs are regarded as the main effector cells in the progression of liver fibrosis and induction of senescence in hepatic stellate cells (HSCs) is vital to the reversion of hepatic fibrosis. Our previous work has showed that S. japonicum egg antigen p40 (Sjp40) could promote HSCs senescence via a STAT3/p53/p21 mechanism. In this paper, the major aim was to explore whether there are other signaling pathways in the process of Sjp40-induced HSCs aging and the underlying effect of SKP2/P27 signal pathway in this procedure...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28287085/dynamic-transcriptomes-identify-biogenic-amines-and-insect-like-hormonal-regulation-for-mediating-reproduction-in-schistosoma-japonicum
#15
Jipeng Wang, Ying Yu, Haimo Shen, Tao Qing, Yuanting Zheng, Qing Li, Xiaojin Mo, Shuqi Wang, Nana Li, Riyi Chai, Bin Xu, Mu Liu, Paul J Brindley, Donald P McManus, Zheng Feng, Leming Shi, Wei Hu
Eggs produced by the mature female parasite are responsible for the pathogenesis and transmission of schistosomiasis. Female schistosomes rely on a unique male-induced strategy to accomplish reproductive development, a process that is incompletely understood. Here we map detailed transcriptomic profiles of male and female Schistosoma japonicum across eight time points throughout the sexual developmental process from pairing to maturation. The dynamic gene expression pattern data reveal clear sex-related characteristics, indicative of an unambiguous functional division between males and females during their interplay...
March 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28212670/characterization-of-schistosoma-japonicum-cp1412-protein-as-a-novel-member-of-the-ribonuclease-t2-molecule-family-with-immune-regulatory-function
#16
Xue-Dan Ke, Shuang Shen, Li-Jun Song, Chuan-Xin Yu, Mihoko Kikuchi, Kenji Hirayama, Hong Gao, Jie Wang, Xuren Yin, Yuan Yao, Qian Liu, Wei Zhou
BACKGROUND: Schistosome infection typically induces a polarized Th2 type host immune response. As egg antigen molecules play key roles in this immunoregulatory process, clarifying their functions in schistosomiasis would facilitate the development of vaccine and immunotherapeutic methods. Schistosoma japonicum (Sj) CP1412 (GenBank: AY57074.1) has been identified as a new member of the RNase T2 family with immune regulatory functions. METHODS: The expression plasmid Sj CP1412-pET28a was constructed and transformed into bacteria for production of recombinant Sj CP1412 protein (rSj CP1412) via IPTG induction...
February 17, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28179521/egg-discrimination-along-a-gradient-of-natural-variation-in-eggshell-coloration
#17
Daniel Hanley, Tomáš Grim, Branislav Igic, Peter Samaš, Analía V López, Matthew D Shawkey, Mark E Hauber
Accurate recognition of salient cues is critical for adaptive responses, but the underlying sensory and cognitive processes are often poorly understood. For example, hosts of avian brood parasites have long been assumed to reject foreign eggs from their nests based on the total degree of dissimilarity in colour to their own eggs, regardless of the foreign eggs' colours. We tested hosts' responses to gradients of natural (blue-green to brown) and artificial (green to purple) egg colours, and demonstrate that hosts base rejection decisions on both the direction and degree of colour dissimilarity along the natural, but not artificial, gradient of egg colours...
February 8, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28171788/fabrication-of-a-novel-hemin-based-monolithic-column-and-its-application-in-separation-of-protein-from-complex-bio-matrix
#18
Xiaoya Jiang, Doudou Zhang, Xueying Li, Xixi Wang, Ligai Bai, Haiyan Liu, Hongyuan Yan
A novel polymer-based monolithic column was prepared via redox initiation system within the confines of a stainless steel column with 4.6mm i.d. In the processes, hemin and lauryl methacrylate were used as co-monomers; ethylene dimethacrylate as crosslinking agent; n-butyl alcohol, ethanediol, and N, N-dimethylformamide as tri-porogens; benzoyl peroxide and N, N-dimethyl aniline as redox initiation system. The resulting polymer-based monolithic columns were characterized by scanning electron microscopy, nitrogen adsorption-desorption instrument, and mercury intrusion porosimeter, respectively...
January 19, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28091611/multi-response-optimization-of-artemia-hatching-process-using-split-split-plot-design-based-response-surface-methodology
#19
V V Arun, Neelam Saharan, V Ramasubramanian, A M Babitha Rani, K R Salin, Ravindra Sontakke, Harsha Haridas, Deepak George Pazhayamadom
A novel method, BBD-SSPD is proposed by the combination of Box-Behnken Design (BBD) and Split-Split Plot Design (SSPD) which would ensure minimum number of experimental runs, leading to economical utilization in multi- factorial experiments. The brine shrimp Artemia was tested to study the combined effects of photoperiod, temperature and salinity, each with three levels, on the hatching percentage and hatching time of their cysts. The BBD was employed to select 13 treatment combinations out of the 27 possible combinations that were grouped in an SSPD arrangement...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28086873/cecal-micrornaome-response-to-salmonella-enterica-serovar-enteritidis-infection-in-white-leghorn-layer
#20
Guixian Wu, Yukai Qi, Xiaoyi Liu, Ning Yang, Guiyun Xu, Liying Liu, Xianyao Li
BACKGROUND: Salmonella enterica serovar Enteritidis (SE) is a food-borne pathogen and of great threat to human health through consuming the contaminated poultry products. MicroRNAs (miRNAs) play an important role in different biological activities and have been shown to regulate the innate immunity in the bacterial infection. The objective of this study is to identify miRNAs associated with SE infection in laying chicken cecum. RESULTS: Average number of reads of three libraries constructed from infected and non-infected chickens was 12,476,156 and 10,866,976, respectively...
January 13, 2017: BMC Genomics
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