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The Ability of Probiotic Lactobacillus Strains in Removal of Benzo[a]pyrene: a Response Surface Methodology Study.

Probiotics Antimicrob Proteins 2021 Jun 15. Epub 2021 Jun 15.

Department of Food Science and Technology, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

In this study, the ability of various lactic acid bacteria was assessed in removing benzo[a]pyrene (BaP) from contaminated phosphate buffer saline (PBS). Response surface methodology (RSM) was performed using Box-Behnken design to investigate the effect of four independent variables including pH (5-7), incubation time (1-24 h), cell density (10-10 cfu/mL), and initial BaP concentration (5-15 mg/kg) at three levels to evaluate in vitro removal of BaP as response. The results showed that all the tested strains were able to remove BaP from PBS and this reduction was entirely strain-specific. Read More

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Proteomic profiling and oxidation site analysis of gaseous ozone oxidized myosin from silver carp (Hypophthalmichthys molitrix) with different oxidation degrees.

Food Chem 2021 Jun 6;363:130307. Epub 2021 Jun 6.

College of Food Science and Technology/National R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan), Huazhong Agricultural University, Wuhan, Hubei Province 430070, China; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China. Electronic address:

Ozone is used to in surimi production and affects the conformation of myosin and gelling properties. Amino acid analysis, SDS-PAGE, in-gel trypsin hydrolysis and LC-MS/MS were used to investigate the effect of the ozone treatment time on the oxidation principle of amino acids to identify the oxidation site and oxidation mechanism of myosin with different oxidation degrees. The results showed that the order of ozonation of amino acids from easy to difficult was tyrosine > cysteine > histidine > proline. Read More

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Ion-transporting capacity and aerobic respiration of larval white seabass (Atractoscion nobilis) may be resilient to ocean acidification conditions.

Sci Total Environ 2021 Jun 5;791:148285. Epub 2021 Jun 5.

Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, USA. Electronic address:

Ocean acidification (OA) has been proposed to increase the energetic demand for acid-base regulation at the expense of larval fish growth. Here, white seabass (Atractoscion nobilis) eggs and larvae were reared at control (542 ± 28 μatm) and elevated pCO (1831 ± 105 μatm) until five days post-fertilization (dpf). Skin ionocytes were identified by immunodetection of the Na/K-ATPase (NKA) enzyme. Read More

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Apple Polyphenol Extract Improves High-Fat Diet-Induced Hepatic Steatosis by Regulating Bile Acid Synthesis and Gut Microbiota in C57BL/6 Male Mice.

J Agric Food Chem 2021 Jun 14. Epub 2021 Jun 14.

School of Public Health, Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, P. R. China.

Our previous study showed that apple polyphenol extract (APE) ameliorated high-fat diet-induced hepatic steatosis in C57BL/6 mice by targeting the LKB1/AMPK pathway; to investigate whether other mechanisms are involved in APE induction of improved hepatic steatosis, especially the roles of bile acid (BA) metabolism and gut microbiota, we conducted this study. Thirty-three C57BL/6 male mice were fed with high-fat diet for 12 weeks and concomitantly treated with sterilized water (CON) or 125 or 500 mg/(kg·bw·day) APE (low-dose APE, LAP; high-dose APE, HAP) by intragastric administration. APE treatment decreased total fecal BA contents, especially fecal primary BA levels, mainly including cholic acid, chenodeoxycholic acid, and muricholic acid. Read More

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Metabolomic Analysis of the Urine from Rats with Collagen-Induced Arthritis with the Effective Part of Maxim.

Evid Based Complement Alternat Med 2021 26;2021:5580341. Epub 2021 May 26.

Key Laboratory of Chinese Materia Medica (Ministry of Education), Heilongjiang University of Chinese Medicine, Harbin 150040, China.

Rheumatoid arthritis (RA) is a chronic autoimmune disease with high incidence and high disability and recurrence rates. Maxim () is a traditional Chinese medicine (TCM) with main effective parts (CRME) commonly used for RA treatment. To explore the mechanism of CRME in RA, we used metabolomics to investigate the effect of CRME intervention on urine metabolism in rats with collagen-induced arthritis (CIA). Read More

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Pharmacokinetic Study of Oral C-Radiolabeled Hyzetimibe, A New Cholesterol Absorption Inhibitor.

Front Pharmacol 2021 28;12:665372. Epub 2021 May 28.

Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.

Hyzetimibe is a candidate drug being investigated as the second-in-class cholesterol absorption inhibitor; it lowers plasma levels of low-density lipoprotein cholesterol (LDL-C) by blocking the Niemann-Pick C1-like 1 protein, a transporter mainly expressed in the intestine that allows dietary cholesterol to enter the body from the intestinal lumen. Previous studies on the metabolism of hyzetimibe in healthy volunteers were not enough to show the biotransformation and excretion pathway; in particular, whether hyzetimibe maintains pharmacological action for duration sufficient to pass through the hepatic-intestinal circulation remains unknown. Furthermore, it remains unclear whether the differences between the chemical structures of ezetimibe and hyzetimibe would result in different pharmacokinetic characteristics. Read More

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Palmitic acid mediated change of rhizosphere and alleviation of Fusarium wilt disease in watermelon.

Saudi J Biol Sci 2021 Jun 18;28(6):3616-3623. Epub 2021 Mar 18.

Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Development, Northeast Agricultural University, Harbin 150030, China.

Palmitic acid (PA) in root exudates or decaying residues can reduce the incidence of soil-borne diseases and promote the growth of some crop plants. However, the effects of PA on soil-borne pathogens and microbial communities are poorly understood. Here, we investigate the effects of PA on overall watermelon microbial communities and the populations of f. Read More

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Metabolic reprogramming due to hypoxia in pancreatic cancer: Implications for tumor formation, immunity, and more.

Biomed Pharmacother 2021 Jun 10;141:111798. Epub 2021 Jun 10.

Department of Clinical Laboratory, The Second Hospital of Shandong University, 247 Beiyuan Street, Jinan 250033, Shandong, China. Electronic address:

Hypoxia is a common phenomenon in most malignant tumors, especially in pancreatic cancer (PC). Hypoxia is the result of unlimited tumor growth and plays an active role in promoting tumor survival, progression, and invasion. As the part of the hypoxia microenvironment in PC is gradually clarified, hypoxia is becoming a key determinant and an important therapeutic target of pancreatic cancer. Read More

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A fluorometric and colorimetric dual-readout nanoprobe based on Cl and N co-doped carbon quantum dots with large stokes shift for sequential detection of morin and zinc ion.

Spectrochim Acta A Mol Biomol Spectrosc 2021 May 27;261:120028. Epub 2021 May 27.

Institute of Environmental Science, and Shanxi Laboratory for Yellow River, Shanxi University, Taiyuan, Shanxi 030006, PR China. Electronic address:

A novel visual nanoprobe was developed for the sequential detection of morin and zinc ion (Zn) based on Cl and N co-doped carbon quantum dots (ClNCQDs) via a fluorometric and colorimetric dual-readout mode. The yellow fluorescence ClNCQDs was synthesized by the one-step hydrothermal treatment of o-chlorobenzoic acid and p-phenylenediamine. The most distinctive property of the ClNCQDs is the large stokes shift (177 nm), which is significantly higher than other reported CQDs. Read More

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Trends in environmental chemical concentrations in the Canadian population: Biomonitoring data from the Canadian Health Measures Survey 2007-2017.

Environ Int 2021 Jun 9;155:106678. Epub 2021 Jun 9.

Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada.

Ten years of nationally representative biomonitoring data collected between 2007 and 2017 are available from the Canadian Health Measures Survey (CHMS). These data establish baseline environmental chemical concentrations in the general population. Here we sought to evaluate temporal trends in environmental chemical exposures in the Canadian population by quantifying changes in biomarker concentrations measured in the first five two-year cycles of the CHMS. Read More

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Toxic mechanism on phenanthrene-induced cytotoxicity, oxidative stress and activity changes of superoxide dismutase and catalase in earthworm (Eisenia foetida): A combined molecular and cellular study.

J Hazard Mater 2021 Jun 9;418:126302. Epub 2021 Jun 9.

School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China. Electronic address:

Phenanthrene (PHE) is an important organic compound, which is widespread in the soil environment and exhibits potential threats to soil organisms. Toxic effects of PHE to earthworms have been extensively studied, but toxic mechanisms on PHE-induced cytotoxicity and oxidative stress at the molecular and cellular levels have not been reported yet. Therefore, we explored the cytotoxicity and oxidative stress caused by PHE in earthworm coelomocytes and the interaction mechanism between PHE and the major antioxidant enzymes SOD/CAT. Read More

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Emamectin benzoate induced enzymatic and transcriptional alternation in detoxification mechanism of predatory beetle Paederus fuscipes (Coleoptera: Staphylinidae) at the sublethal concentration.

Ecotoxicology 2021 Jun 11. Epub 2021 Jun 11.

Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China.

In this study, the detoxification enzyme activity and the transcriptional profile changes in the second instar through RNA-sequencing technology due to emamectin benzoate (EB) were assessed. The cytochrome P450 monooxygenases (P450) enzyme activity was not altered by EB due to the change in concentration and exposure time in all treatments. The glutathione S-transferase (GST) enzyme was not considerably varying in all treatments, while exposure time significantly changed the enzyme activity. Read More

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Selenogenome and AMPK signal insight into the protective effect of dietary selenium on chronic heat stress-induced hepatic metabolic disorder in growing pigs.

J Anim Sci Biotechnol 2021 Jun 12;12(1):68. Epub 2021 Jun 12.

Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.

Background: Chronic heat stress (CHS) disrupts hepatic metabolic homeostasis and jeopardizes product quality of pigs. Selenium (Se) may regulate the metabolic state through affect selenoprotein. Thus, we investigate the protective effect of dietary hydroxy-4-methylselenobutanoic acid (HMSeBA) on CHS induced hepatic metabolic disorder in growing pigs, and the corresponding response of selenoprotein. Read More

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Hepatitis B infections among blood donors in England between 2009 and 2018: Is an occult hepatitis B infection a risk for blood safety?

Transfusion 2021 Jun 11. Epub 2021 Jun 11.

Microbiology Services, NHS Blood and Transplant, London, UK.

Introduction: Hepatitis B virus (HBV) is one of the most frequent infections identified in blood donors in England and represents an ongoing blood safety risk. We have analyzed markers of HBV infections in blood donors in England between 2009 and 2018 and used these to estimate the likelihood of non-detection of occult HBV infection (OBI).

Methods: We collected epidemiological, virological, and genotyping information on HBV cases identified in England, 2009-2018. Read More

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Enterocins as Novel Feed Additives in Rabbit Diet: Enterocin Ent M and Durancin Ent ED26E/7, Their Combination, and Effects on Microbiota, Caecal Fermentation, and Enzymatic Activity.

Probiotics Antimicrob Proteins 2021 Jun 10. Epub 2021 Jun 10.

The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Instytucka 3, 05 110, Jabłonna, Poland.

The present study investigates the effects of enterocin Ent M and durancin Ent ED26E/7 applied separately and in combination on the intestinal microbiota, caecal enzymatic activity, and fermentaion of rabbits. Eighty rabbits (M91 meatline, aged 5 weeks, both sexes) were divided into groups E (Ent M; 50 µL/animal/day), D (Ent ED26E/7; 50 µL/animal/day), E + D (Ent M + Ent ED26E/7), and control (C). The additives were administered in drinking water for 21 days. Read More

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Succinic acid inhibits photosynthesis of Microcystis aeruginosa via damaging PSII oxygen-evolving complex and reaction center.

Environ Sci Pollut Res Int 2021 Jun 11. Epub 2021 Jun 11.

College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China.

To elucidate the mechanism of succinic acid (SA) inhibition of Microcystis aeruginosa, the chlorophyll fluorescence transients, photosynthesis, photosynthetic electron transport activity, and gene expression of M. aeruginosa were evaluated under various doses of SA. The results demonstrated that, after treatment with 60 mg L SA for 1 h, the chlorophyll fluorescence transients and related parameters changed significantly, indicating that the function and structure of photosynthetic apparatuses of Microcystis were seriously damaged. Read More

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Aboriginal Bacterial Flora in the Uricase-Deficient Rat Gut is Not the Main Factor Affecting Serum Uric Acid.

Evid Based Complement Alternat Med 2021 18;2021:5587642. Epub 2021 May 18.

Yunnan Provincial Key Laboratory of Molecular Biology for Sinomedicine, School of Basic Medicine, Yunnan University of Traditional Chinese Medicine, Kunming 650500, Yunnan, China.

The relationship between intestinal bacteria and hyperuricemia is a hot research topic. To better understand this relationship, uricase-deficient Sprague-Dawley rats (Kunming-DY rats) were used. The wild-type rats and Kunming-DY rats were used as controls. Read More

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Enhanced dewatering of activated sludge by acid assisted Heat-CaO treatment: Simultaneously removing heavy metals and mitigating antibiotic resistance genes.

J Hazard Mater 2021 May 27;418:126248. Epub 2021 May 27.

Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China. Electronic address:

High water content and accumulation of heavy metals and antibiotic resistance genes (ARGs) in sewage sludge limit its application. Fenton process has been widely used in sludge dewatering, but the use of hydrogen peroxide (HO) and generation of acid sludge are the main drawbacks. Here, a novel method of heat-CaO treatment was proposed to enhance sludge dewatering. Read More

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Comparative study on the pharmacodynamic difference of oral administration of Xiaojin Pills accompanied with Chinese Baijiu and water.

J Ethnopharmacol 2021 Jun 7:114284. Epub 2021 Jun 7.

State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China. Electronic address:

Ethnopharmacological Relevance: Xiaojin Pills is a classic prescription for the treatment of mammary glands hyperplasia with a history of nearly 300 years, and is also the first choice of Chinese patent medicine for the clinical treatment of mammary glands hyperplasia in contemporary traditional Chinese medicine clinic. Clinical and animal studies have shown that Xiaojin Pills has the effects of anti-mammary glands hyperplasia, promoting blood circulation, anti-inflammation and analgesia. However, its initial administration method was "taking orally after soaked with Chinese Baijiu", the modern method was changed to "taking orally with water" in recent 20 years. Read More

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strains derived from human gut ameliorate metabolic disorders via modulation of gut microbiota composition and short-chain fatty acids metabolism.

Benef Microbes 2021 Jun 10;12(3):267-281. Epub 2021 Jun 10.

State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China P.R.

Regulation on gut microbiota and short-chain fatty acids (SCFAs) are believed to be a pathway to suppress the development of metabolic syndrome. In this study, three strains derived from the human gut were investigated for their effects on alleviation of metabolic disorders. These strains were individually administered to metabolic disorder rats induced by high-fat-high-sucrose (HFHS) diet. Read More

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Evidence for a credit-card-swipe mechanism in the human PC floppase ABCB4.

Structure 2021 Jun 1. Epub 2021 Jun 1.

Institute of Biochemistry, Heinrich Heine University Düsseldorf, Düsseldorf, Germany. Electronic address:

ABCB4 is described as an ATP-binding cassette (ABC) transporter that primarily transports lipids of the phosphatidylcholine (PC) family but is also capable of translocating a subset of typical multidrug-resistance-associated drugs. The high degree of amino acid identity of 76% for ABCB4 and ABCB1, which is a prototype multidrug-resistance-mediating protein, results in ABCB4's second subset of substrates, which overlap with ABCB1's substrates. This often leads to incomplete annotations of ABCB4, in which it was described as exclusively PC-lipid specific. Read More

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Bovine β-Lactoglobulin Covalent Modification by Flavonoids: Effect on the Allergenicity and Human Intestinal Microbiota.

J Agric Food Chem 2021 Jun 9. Epub 2021 Jun 9.

National R&D Center for Freshwater Fish Processing, and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi Province, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.

The present study aims to investigate the structure of covalent conjugates of bovine β-lactoglobulin (BLG) and flavonoids (luteolin, myricetin, and hyperoside), and their effect on the allergenicity and human intestinal microbiota. Covalent modification of amino acids in BLG by flavonoids was confirmed by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and -phthaldialdehyde assay. The secondary and conformational structures of BLG were changed by the covalent modification, which were determined by the circular dichroism, Fourier transform infrared spectroscopy, fluorescence spectroscopy, and UV spectroscopy. Read More

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Visual monitoring and optical recognition of digoxin by functionalized AuNPs and triangular AgNPs as efficient optical nano-probes.

J Mol Recognit 2021 Jun 9:e2917. Epub 2021 Jun 9.

Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.

In this study, we presented elective, sensitive, and rapid UV-Vis spectrophotometry and calorimetric assay for the recognition of digoxin. Therefore, cysteamine-gold nanoparticles (Cys A-AuNPs) in the presence of cysteine acid amine and Silver nanoparticles in the presence of tetramethyl benzidine and hydrogen peroxide (AgNPs-TMB [3,3',5,5'-tetramethylbenzidine]-H O ) were synthesized and utilized as the desired probe. Finally, color variation of probes was observed in the absence and presence of digoxin. Read More

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Differential insulin sensitivity of NMR-based metabolomic measures in a two-step hyperinsulinemic euglycemic clamp study.

Metabolomics 2021 Jun 9;17(6):57. Epub 2021 Jun 9.

Section of Gerontology and Geriatrics; Department of Internal Medicine, Leiden University Medical Center, PO Box 9600, 2300RC, Leiden, The Netherlands.

Background: Insulin is the key regulator of glucose metabolism, but it is difficult to dissect direct insulin from glucose-induced effects. We aimed to investigate the effects of hyperinsulemia on metabolomic measures under euglycemic conditions in nondiabetic participants.

Methods: We assessed concentrations of 151 metabolomic measures throughout a two-step hyperinsulinemic euglycemic clamp procedure. Read More

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Peripheral vascular disease: preclinical models and emerging therapeutic targeting of the vascular endothelial growth factor ligand-receptor system.

Expert Opin Ther Targets 2021 Jun 17:1-11. Epub 2021 Jun 17.

Department of Medicine and Vascular Biology Center, Augusta University, Augusta, GA, USA.

: Vascular endothelial growth factor (VEGF)-A is a sought therapeutic target for PAD treatment because of its potent role in angiogenesis. However, no therapeutic benefit was achieved in VEGF-A clinical trials, suggesting that our understanding of VEGF-A biology and ischemic angiogenic processes needs development. Alternate splicing in VEGF-A produces pro- and anti-angiogenic VEGF-A isoforms; the only difference being a 6-amino acid switch in the C-terminus of the final 8th exon of the gene. Read More

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A comprehensive review of cereal germ and its lipids: Chemical composition, multi-objective process and functional application.

Food Chem 2021 May 12;362:130066. Epub 2021 May 12.

College of Biosystems Engineering and Food Science, National Local Joint Engineering Laboratory for Intelligent Food Processing Technology and Equipment, Zhejiang Key Laboratory of Agricultural Products Processing Technology, Zhejiang Food Processing Technology and Equipment Engineering Laboratory, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China. Electronic address:

Cereal germ (CG), a by-product of grain milling, has drawn much attention in the food industry because of its nutritional and functional advantages. Nowadays, the utilization of cereal germ from animal feeds to foodstuff is a popular trend. CGs have high content of polyunsaturated fatty acids in their lipids (43. Read More

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Gold nanoparticles-mediated ratiometric fluorescence aptasensor for ultra-sensitive detection of Abscisic Acid.

Biosens Bioelectron 2021 May 7;190:113311. Epub 2021 May 7.

College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China. Electronic address:

Herein, a novel ratiometric aptasensor based on carbon quantum [email protected] zinc salt ([email protected]) and aptamer-functionalized gold nanoparticles (Apt-AuNPs) was developed for highly sensitive detection of ABA by fluorescence spectrometry. The [email protected] nanomaterials displayed dual-emission properties at 490 nm and 657 nm with excitation at 420 nm were synthesized for the first time. ZIF-8 not only served as an anchor point for CQDs but also acted as a modulator to regulate fluorescence signals of CQDs. Read More

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Surfactin, a quorum sensing signal molecule, globally affects the carbon metabolism in .

Metab Eng Commun 2021 Jun 12;12:e00174. Epub 2021 May 12.

College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.

Surfactin, a quorum sensing signal molecule, is correlated with carbon metabolism in . In the present work, we found that mutation of (Δ) led to an obviously changed carbon metabolism in . Firstly, the PTS-glucose system was significantly increased as a feedback to glucose exhaustion. Read More

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Antigenic Evolution on a Global Scale Reveals the Potential Natural Selection of Severe Acute Respiratory Syndrome-Coronavirus 2 by Pre-existing Cross-Reactive T-Cell Immunity.

Front Microbiol 2021 18;12:599562. Epub 2021 May 18.

Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.

The mutation pattern of severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) has changed constantly during worldwide community transmission of this virus. However, the reasons for the changes in mutation patterns are still unclear. Accordingly, in this study, we present a comprehensive analysis of over 300 million peptides derived from 13,432 SARS-CoV-2 strains harboring 4,420 amino acid mutations to analyze the potential selective pressure of the host immune system and reveal the driver of mutations in circulating SARS-CoV-2 isolates. Read More

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Changes in lipid properties of duck egg yolks under extreme processing conditions.

Poult Sci 2021 Mar 22;100(7):101140. Epub 2021 Mar 22.

Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China; State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China. Electronic address:

The changes in lipid properties of duck egg yolks during processing may affect the quality of egg yolks. In this paper, various physicochemical and instrumental methods were used to study the changes of lipid characteristics of duck egg yolks under extreme processing conditions such as high salt, high salt-heat synergy and strong alkali. The results showed that both the high salt and high salt-heat treatments resulted in the decrease of the moisture content and the increase of the oil exudation of egg yolks. Read More

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