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https://www.readbyqxmd.com/read/28197985/inonotus-obliquus-polysaccharide-regulates-gut-microbiota-of-chronic-pancreatitis-in-mice
#1
Yang Hu, Chunying Teng, Sumei Yu, Xin Wang, Jinsong Liang, Xin Bai, Liying Dong, Tao Song, Min Yu, Juanjuan Qu
Polysaccharide is efficient in attenuation of metabolic ailments and modulation of gut microbiota as prebiotics. The therapeutic effect of Inonotus obliquus polysaccharide (IOP) on chronic pancreatitis (CP) in mice has been validated in our previous study. However, it is not clear whether IOP is conducive to maintaining the homeostasis between gut microbiota and host. The aim of this study is to testify the potential effects of IOP on gut microbiota composition and diversity in mice with CP. The changes in glutathione peroxidase (GSH-PX), total antioxidant capacity (TAOC), tumor necrosis factor alpha (TNF-α), transforming growth factor beta (TGF-β), lipase and trypsin levels were measured by commercial assay kits, meanwhile the gut microbiota composition and diversity were analyzed by high throughput sequencing...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28146410/almond-skin-polyphenol-extract-inhibits-inflammation-and-promotes-lipolysis-in-differentiated-3t3-l1-adipocytes
#2
Wen-Chung Huang, Chi-Yuan Chen, Shu-Ju Wu
Studies have shown that polyphenols reduce the risk of inflammation-related diseases and upregulates energy expenditure in adipose tissue. Here, we investigated the mechanism of the anti-inflammatory and antiobesity effects of almond skin polyphenol extract (ASP) in differentiated 3T3-L1 adipocytes. The antioxidant effects of ASP were measured based on DPPH radical scavenging activity, Trolox equivalent antioxidant capacity, and total phenolic content. Differentiated 3T3-L1 cells were treated with ASP. Subsequently, lipolysis proteins and transcription factors of adipogenesis were measured...
February 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28143661/novel-therapy-for-pancreatic-fistula-using-adipose-derived-stem-cell-sheets-treated-with-mannose
#3
Hirokazu Kaneko, Toshio Kokuryo, Yukihiro Yokoyama, Junpei Yamaguchi, Tokunori Yamamoto, Rei Shibata, Momokazu Gotoh, Toyoaki Murohara, Akira Ito, Masato Nagino
BACKGROUND: Given that no studies have reported the use of adipose-derived stem cell sheets for the prevention of pancreatic fistulas, it is unclear whether adipose-derived stem cell sheets are effective at preventing this complication. The aim of this study was to evaluate the efficacy of novel therapy for the prevention of pancreatic fistulas using adipose-derived stem cell sheets treated with mannose. METHODS: The rat pancreatic duct (splenic duct) and surrounding pancreatic parenchyma were transected to induce a pancreatic fistula...
January 28, 2017: Surgery
https://www.readbyqxmd.com/read/28134758/functional-elucidation-of-nemopilema-nomurai-and-cyanea-nozakii-nematocyst-venoms-lytic-activity-using-mass-spectrometry-and-zymography
#4
Yang Yue, Huahua Yu, Rongfeng Li, Ronge Xing, Song Liu, Kecheng Li, Xueqin Wang, Xiaolin Chen, Pengcheng Li
BACKGROUND: Medusozoans utilize explosively discharging penetrant nematocysts to inject venom into prey. These venoms are composed of highly complex proteins and peptides with extensive bioactivities, as observed in vitro. Diverse enzymatic toxins have been putatively identified in the venom of jellyfish, Nemopilema nomurai and Cyanea nozakii, through examination of their proteomes and transcriptomes. However, functional examination of putative enzymatic components identified in proteomic approaches to elucidate potential bioactivities is critically needed...
January 26, 2017: Toxins
https://www.readbyqxmd.com/read/28119444/label-free-measurement-of-the-yeast-short-chain-triacylglycerol-lipase-activity-by-electrospray-ionization-mass-spectrometry-after-one-step-esterification
#5
Hye Jin Ham, Jongcheol Seo, Hye-Joo Yoon, Seung Koo Shin
Triacylglycerol (TAG) lipases hydrolyze ester bonds in TAG and release diacylglycerol (DAG), monoacylglycerol (MAG) and fatty acid. We present a one-step chemical derivatization method for label-free quantification of a mixture of TAG, DAG, and MAG following lipase assay by electrospray ionization mass spectrometry. Since the ionization efficiencies of TAG, DAG, and MAG are not identical, lipase reaction products, DAG and MAG, are derivatized to TAG species by esterifying their hydroxyl groups, using acyl chloride whose acyl chain contains one less (or one more) -CH2 group than that of substrate TAG...
January 24, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28109854/histone-methyltransferase-aflrmta-gene-is-involved-in-the-morphogenesis-mycotoxin-biosynthesis-and-pathogenicity-of-aspergillus-flavus
#6
Yu Li, Yizi He, Xing Li, Opemipo Esther Fasoyin, Yule Hu, Yaju Liu, Jun Yuan, Zhenhong Zhuang, Shihua Wang
Arginine methyltransferases catalyze the posttranslational methylation of arginine, which is involved in a range of important biological processes. aflrmtA gene, an arginine methyltransferase was deleted from Aspergillus flavus in this study by homologous recombination. In morphogenesis assay, aflrmtA was found to down-regulate conidiation by regulating the activity of brlA and abaA genes. It was also found to increase sclerotia formation by up-regulating the expression of nsdC and nsdD genes. In mycotoxin biosynthesis, aflrmtA gene was found to significantly up-regulate the biosynthesis of AFB1 in PDA and PDB media by improving the expression of aflR, aflC and aflK, but it was of no effect in YES medium...
January 19, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28106397/kinetics-of-detergent-induced-activation-and-inhibition-of-a-minimal-lipase
#7
Daniel Kübler, Anna Bergmann, Lukas Weger, Kim N Ingenbosch, Kerstin Hoffmann-Jacobsen
Detergents are commonly applied in lipase assays to solubilize sparingly soluble model substrates. However, detergents affect lipases as well as substrates in multiple ways. The effect of detergents on lipase activity is commonly attributed to conformational changes in the lid region. This study deals with the effect of the nonionic detergent, poly(ethylene glycol) dodecyl ether, on a lipase that does not contain a lid sequence, lipase A from Bacillus subtilis (BSLA). We show that BSLA activity depends strongly on the detergent concentration and the dependency profile changes with pH...
February 6, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28081181/aronia-melanocarpa-extract-ameliorates-hepatic-lipid-metabolism-through-ppar%C3%AE-2-downregulation
#8
Chung-Hwa Park, Jung-Hee Kim, Eun Byul Lee, Wonhee Hur, Oh-Joo Kwon, Hyoung-Jin Park, Seung Kew Yoon
Nonalcoholic fatty liver disease (NAFLD) is a hepatic manifestation of metabolic syndrome. Studies have demonstrated that anthocyanin-rich foods may improve hyperlipidemia and ameliorate hepatic steatosis. Here, effects of Aronia melanocarpa (AM), known to be rich of anthocyanins, on hepatic lipid metabolism and adipogenic genes were determined. AM was treated to C57BL/6N mice fed with high fat diet (HFD) or to FL83B cells treated with free fatty acid (FFA). Changes in levels of lipids, enzymes and hormones were observed, and expressions of adipogenic genes involved in hepatic lipid metabolism were detected by PCR, Western blotting and luciferase assay...
2017: PloS One
https://www.readbyqxmd.com/read/28043634/mycobacterial-excretory-secretory-31-protein-with-serine-protease-and-lipase-activities-an-immunogen-and-drug-target-against-tuberculosis-infection
#9
Bhaskar C Harinath
OBJECTIVE/BACKGROUND: Tuberculosis (TB) has been declared as a global emergency by the World Health Organization in 1993 and still remains one of the world's biggest threats. Worldwide, 9.6 million people have been estimated to have fallen ill with TB in 2014: 5.4 million men, 3.2 million women, and 1.0 million children. To reduce this burden, detection and treatment gaps must be addressed and new tools developed (Global TB report 2015). METHODS: Seroreactivity of the purified excretory secretory (ES) antigens ES-31, ES-43, ES-41, and ES-6 have been assessed in pulmonary TB (fresh, relapse, chronic, and latent), extrapulmonary TB, and in human immunodeficiency virus-TB coinfection...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28025036/decreased-eicosapentaenoic-acid-levels-in-acne-vulgaris-reveals-the-presence-of-a-proinflammatory-state
#10
İbrahim Aslan, Filiz Özcan, Taner Karaarslan, Ebru Kıraç, Mutay Aslan
This study aimed to determine circulating levels of polyunsaturated fatty acids (PUFAs), secretory phospholipase A2 (sPLA2), lipoprotein lipase (LPL) and measure circulating protein levels of angiopoietin-like protein 3 (ANGPTL3), ANGPTL4, cyclooxygenase-2 (COX-2) and prostaglandin E2 (PGE2) in patients with acne vulgaris. Serum from 21 control subjects and 31 acne vulgaris patients were evaluated for levels of arachidonic acid (AA, C20:4n- 6), dihomo-gamma-linolenic acid (DGLA, C20:3n-6), eicosapentaenoic acid (EPA, C20:5n-3) and docosahexaenoic acid (DHA, C22:6n-3)...
December 23, 2016: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28018374/island-cotton-enhanced-disease-susceptibility-1-gene-encoding-a-lipase-like-protein-plays-a-crucial-role-in-response-to-verticillium-dahliae-by-regulating-the-sa-level-and-h2o2-accumulation
#11
Zhang Yan, Wang Xingfen, Rong Wei, Yang Jun, Ma Zhiying
Cotton is one of the most economically important crops, but most cultivated varieties lack adequate innate immunity or resistance to Verticillium wilt. This results in serious losses to both yield and fiber quality. To identify the genetic resources for innate immunity and understand the pathways for pathogen defenses in this crop, here we focus on orthologs of the central Arabidopsis thaliana defense regulator Enhanced Disease Susceptibility 1 (EDS1). The full-length cDNA of GbEDS1 was obtained by screening the full-length cDNA library of Gossypium barbadense combining with RACE strategy...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28013401/prolonged-production-and-aggregation-complexity-of-cold-active-lipase-from-pseudomonas-proteolytica-gbpi_hb61-isolated-from-cold-desert-himalaya
#12
Rahul Jain, Anita Pandey, Mukesh Pasupuleti, Veena Pande
Pseudomonas, being the common inhabitant of colder environments, are suitable for the production of cold-active enzymes. In the present study, a newly isolated strain of Pseudomonas from cold desert site in Indian Himalayan Region, was investigated for the production of cold-active lipase. The bacteria were identified as Pseudomonas proteolytica by 16S rDNA sequencing. Lipase production by bacteria was confirmed by qualitative assay using tributyrin and rhodamine-B agar plate method. The bacterium produced maximum lipase at 25 °C followed by production at 15 °C while utilizing olive, corn, as well as soybean oil as substrate in lipase production broth...
December 24, 2016: Molecular Biotechnology
https://www.readbyqxmd.com/read/28010778/quantification-of-immobilized-candida-antarctica-lipase-b-calb-using-icp-aes-combined-with-bradford-method
#13
Paula Nicolás, Verónica L Lassalle, María L Ferreira
The aim of this manuscript was to study the application of a new method of protein quantification in Candida antarctica lipase B commercial solutions. Error sources associated to the traditional Bradford technique were demonstrated. Eight biocatalysts based on C. antarctica lipase B (CALB) immobilized onto magnetite nanoparticles were used. Magnetite nanoparticles were coated with chitosan (CHIT) and modified with glutaraldehyde (GLUT) and aminopropyltriethoxysilane (APTS). Later, CALB was adsorbed on the modified support...
February 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28004575/whole-milk-increases-intestinal-angptl4-expression-and-excretion-of-fatty-acids-through-feces-and-urine
#14
Søren Drud Nielsen, Bashar Amer, Karoline Blaabjerg, Trine K Dalsgaard, Randi Jessen, Bjørn Petrat-Melin, Martin Krøyer Rasmussen, Hanne D Poulsen, Jette F Young
The angiopoietin-like 4 (ANGPLT4) protein is involved in lipid metabolism and is known to inhibit lipoprotein lipase in the bloodstream. We investigated the effect of milk on intestinal ANGPTL4 and the metabolic profile of growing pigs and the effect of free fatty acids (FFAs) on ANGPTL4 in ex vivo and in vitro assays. Feeding pigs whole milk increased intestinal ANGPTL4 mRNA and increased fecal excretion of long-chain FFA compared to the control group fed soybean oil (n = 9). Furthermore, FFAs (C4-C8) induced ANGPTL4 gene expression in porcine intestinal tissue mounted in Ussing chambers and ANGPTL4 protein secretion to both the apical and basolateral sides of intestinal Caco-2 cells on permeable membranes...
January 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27992669/midkine-is-overexpressed-in-acute-pancreatitis-and-promotes-the-pancreatic-recovery-in-l-arginine-induced-acute-pancreatitis-in-mice
#15
Li Cheng, Zhenguo Qiao, Chunfang Xu, Jiaqing Shen
BACKGROUND AND AIM: Midkine (MK) is involved in the pathogenesis of numerous malignancies, but the expression and effect of MK in acute pancreatitis (AP) have not been well studied and documented. METHODS: In this study, the expression of MK was assayed in mice with L-arginine-induced AP. A recombinant protein of MK (rhMK) was introduced in this study to test the effect of MK on the L-arginine-induced AP. Serum amylase and lipase were assayed. Pancreas tissue samples were also collected for the evaluation of histologic injury...
December 19, 2016: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/27989999/candidate-nematicidal-proteins-in-a-new-pseudomonas-veronii-isolate-identified-by-its-antagonistic-properties-against-xiphinema-index
#16
Hayron Canchignia, Fabiola Altimira, Christian Montes, Evelyn Sánchez, Eduardo Tapia, María Miccono, Daniel Espinoza, Carlos Aguirre, Michael Seeger, Humberto Prieto
The nematode Xiphinema index affects grape vines and transmits important viruses associated with fanleaf degeneration. Pseudomonas spp. are an extensive bacterial group in which important biodegradation and/or biocontrol properties can occur for several strains in the group. The aim of this study was to identify new Pseudomonas isolates with antagonist activity against X. index. Forty bacterial isolates were obtained from soil and root samples from Chilean vineyards. Thirteen new fluorescent pseudomonads were found and assessed for their antagonistic capability...
December 17, 2016: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/27986537/meaningful-respirometric-measurements-of-ucp1-mediated-thermogenesis
#17
REVIEW
Yongguo Li, Tobias Fromme, Martin Klingenspor
Regarding the enormous interest in brown and brite/beige adipose tissue in the context of metabolic disease, reliable quantification of thermogenesis in these adipocytes is a central issue. This requires an assay specific for uncoupling protein 1 (UCP1) mediated thermogenesis in adherent intact cells. In a recent study we identified a major pitfall associated with established procedures generally applied for this purpose. Meaningful respirometry of UCP1-mediated thermogenesis imperatively requires activation of UCP1 and control over free fatty acid levels...
March 2017: Biochimie
https://www.readbyqxmd.com/read/27986123/effects-of-castanospermine-on-inflammatory-response-in-a-rat-model-of%C3%A2-experimental-severe-acute-pancreatitis
#18
Yu-Pu Hong, Chen Chen, Wen-Yi Guo, Liang Zhao, Fang-Chao Mei, Ming-Wei Xiang, Wei-Xing Wang
BACKGROUND AND AIMS: Acute pancreatitis (AP) is an acute inflammatory disorder characterized by autodigestion of pancreatic tissue resulting in local pancreatic injury or systemic inflammatory response. Castanospermine (CAST) is an alkaloid from the Castanospermum australe, known as an anti-inflammatory agent and immunosuppressant in animal experiments. However, whether CAST can attenuate AP remains unclear. This study investigated the effects of CAST on sodium taurocholate (STC)-induced severe acute pancreatitis (SAP) in rats and the pertinent mechanism...
August 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/27965754/psychrophilic-lipase-from-arctic-bacterium
#19
Zakiah Ramle, Rashidah Abdul Rahim
A lipase producer psychrophilic microorganism isolated from Arctic sample was studied. The genomic DNA of the isolate was extracted using modified CTAB method. Identification of the isolate by morphological and 16S rRNA sequence analysis revealed that the isolate is closely related to Arthrobacter gangotriensis (97% similarity). A. gangotriensis was determined as positive lipase producer based on the plate screening using specific and sensitive plate assay of Rhodamine B. The PCR result using Arthrobacter sp...
November 2016: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/27964890/chemoenzymatic-synthesis-of-fluorogenic-phospholipids-and-evaluation-in-assays-of-phospholipases-a-c-and-d
#20
Mathilde S Piel, Günther H J Peters, Jesper Brask
Phospholipases are ubiquitous in nature and the target of significant research aiming at both their physiological roles and technical applications in e.g. the food industry. In the search for sensitive and selective phospholipase assays, we have focused on synthetic FRET (Förster resonance energy transfer) substrates. This has led to the development of a facile, easily scalable and low cost synthesis of fluorogenic phospholipids featuring the dansyl/dabcyl fluorophore/quencher-pair on the fatty acid ω-position and on the phosphatidylethanolamine head group, respectively...
December 10, 2016: Chemistry and Physics of Lipids
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