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FAS 酒精 神经

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https://www.readbyqxmd.com/read/28221889/inactivation-of-gram-positive-bacteria-by-novel-phenolic-branched-chain-fatty-acids
#1
Xuetong Fan, Karen Wagner, Kimberly J B Sokorai, Helen Ngo
Novel phenolic branched-chain fatty acids (PBC-FAs) were evaluated for their antimicrobial properties against both gram-positive ( Listeria innocua , Bacillus subtilis , Enterococcus faecium ) and gram-negative ( Escherichia coli , Salmonella Typhimurium, and Pseudomonas tolaasii ) bacteria. In addition, PBC-FA derivatives, such as PBC-FA methyl ester mixture, methyl-branched fatty acid mixtures, and trimethylsilyl-PBC-FA methyl esters, were synthesized to study the structure activity relationship. Results showed that PBC-FAs were a potent antimicrobial against gram-positive bacteria with MICs of 1...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28220633/fatty-acid-composition-fat-deposition-lipogenic-gene-expression-and-performance-of-broiler-fed-diet-supplemented-with-different-sources-of-oil
#2
Jannatara Khatun, Teck Chwen Loh, Henny Akit, Hooi Ling Foo, Rosfarizan Mohamad
The present study assessed the effect of feeding palm oil (PO), sunflower oil (SO) and their combination on performance, fat deposition, fatty acid composition and lipogenic gene expression of broilers reared for 42 days. A total of 144 1-day-old broilers (Cobb500) were randomly allotted into four treatment diets with each having six replicates of six chicks in each replicate following a completely randomized design. Live weight gain and feed efficiency was significantly (P < 0.05) higher in birds fed with a combination of oil sources compared to controls...
February 21, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28220125/hgf-secreted-by-activated-kupffer-cells-induces-apoptosis-of-plasmodium-infected-hepatocytes
#3
Lígia Antunes Gonçalves, Joana Rodo, Lurdes Rodrigues-Duarte, Luciana Vieira de Moraes, Carlos Penha-Gonçalves
Malaria liver stage infection is an obligatory parasite development step and represents a population bottleneck in Plasmodium infections, providing an advantageous target for blocking parasite cycle progression. Parasite development inside hepatocytes implies a gross cellular insult evoking innate host responses to counteract intra-hepatocytic infection. Using primary hepatocyte cultures, we investigated the role of Kupffer cell-derived hepatocyte growth factor (HGF) in malaria liver stage infection. We found that Kupffer cells from Plasmodium-infected livers produced high levels of HGF, which trigger apoptosis of infected hepatocytes through a mitochondrial-independent apoptosis pathway...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28219888/cd74-deficiency-mitigates-systemic-lupus-erythematosus-like-autoimmunity-and-pathological-findings-in-mice
#4
Yi Zhou, Huimei Chen, Li Liu, Xueqing Yu, Galina K Sukhova, Min Yang, Lijun Zhang, Vasileios C Kyttaris, George C Tsokos, Isaac E Stillman, Takaharu Ichimura, Joseph V Bonventre, Peter Libby, Guo-Ping Shi
CD74 mediates MHC class-II antigenic peptide loading and presentation and plays an important role in the pathogenesis of autoimmune diseases, including systemic lupus erythematosus. C57BL/6 Fas(lpr) mice that develop spontaneous lupus-like autoimmunity and pathology showed elevated CD74 expression in the inflammatory cell infiltrates and the adjacent tubular epithelial cells (TECs) in kidneys affected by lupus nephritis but negligible levels in kidneys from age-matched wild-type mice. The inflammatory cytokine IFN-γ or IL-6 induced CD74 expression in kidney TECs in vitro...
February 20, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28219704/%C3%AE-lactam-hypersensitivity-involves-expansion-of-circulating-and-skin-resident-th22-cells
#5
Andrew Sullivan, Eryi Wang, John Farrell, Paul Whitaker, Lee Faulkner, Daniel Peckham, B Kevin Park, Dean J Naisbitt
BACKGROUND: β-lactam hypersensitivity has been classified according to the phenotype and function of drug-specific T-cells; however, new T-cell subsets have not been considered. OBJECTIVE: The objective of this study was use piperacillin as a model of β-lactam hypersensitivity to study the nature of the drug-specific T-cell response induced in the blood and skin of hypersensitive patients and healthy volunteers. METHODS: Drug-specific T-cells were cloned from blood and inflamed skin and cellular phenotype and function was explored...
February 17, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28219700/inhibition-of-ros-production-autophagy-or-apoptosis-signaling-reversed-the-anticancer-properties-of-antrodia-salmonea-in-triple-negative-breast-cancer-mda-mb-231-cells
#6
Chia-Ting Chang, Mallikarjuna Korivi, Hui-Chi Huang, Varadharajan Thiyagarajan, Kai-Yuan Lin, Pei-Jane Huang, Jer-Yuh Liu, You-Cheng Hseu, Hsin-Ling Yang
We investigated the in vitro and in vivo anticancer properties of Antrodia salmonea (AS), a well-known edible/medicinal mushroom in Taiwan, on human triple-negative breast cancer (MDA-MB-231) cells and xenografted nude mice; and revealed the underlying molecular mechanisms involved in autophagic- and apoptotic-cell death. Treatment of MDA-MB-231 cells with fermented culture broth of AS (0-200 μg/mL) inhibited cell viability/growth. AS-induced autophagy was evidenced via increased LC3-II accumulation, GFP-LC3 puncta and AVOs formation in MDA-MB-231 cells...
February 17, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28218912/engineering-fatty-acid-synthases-for-directed-polyketide-production
#7
Jan Gajewski, Floris Buelens, Sascha Serdjukow, Melanie Janßen, Niña Cortina, Helmut Grubmüller, Martin Grininger
In this study, we engineered fatty acid synthases (FAS) for the biosynthesis of short-chain fatty acids and polyketides, guided by a combined in vitro and in silico approach. Along with exploring the synthetic capability of FAS, we aim to build a foundation for efficient protein engineering, with the specific goal of harnessing evolutionarily related megadalton-scale polyketide synthases (PKS) for the tailored production of bioactive natural compounds.
February 20, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28216896/therapeutic-effect-of-dendrobium-candidum-on-lupus-nephritis-in-mice
#8
Qiang Wang, Peng Sun, Rui Wang, Xin Zhao
CONTEXT: Dendrobium candidum (D. candimum) widely is a functional drug. The curative effect of D. candidum on lupus nephritis has been studied in vivo. MATERIALS AND METHOD: The DBA/2 and B6D2F1 mice were used for this in vivo experiment. The 50% effective dose (ED50) was used to check the effective concentration for this study. Then the SCr, BUN, TC, TG, IL-6, IL-12, TNF-α, and IFN-γ levels were determined by kits. The output of urine protein was determined by means of Coomassie Brilliant Blue, and the auto-antibody dsDNA was determined with titer plate technology and indirect immunofluorescence...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28216611/long-non-coding-rna-reprogramming-ror-promotes-cell-proliferation-in-colorectal-cancer-via-affecting-p53
#9
Hong Li, Xiumei Jiang, Xuemei Niu
BACKGROUND Colorectal cancer (CRC) remains one of the most common lethal malignant tumors worldwide. The correlation between lncRNAs expression and CRC development has not been well identified in the recent literature. This study focused on the role of lncRNA-ROR on CRC progression and development. MATERIAL AND METHODS Quantitative real-time PCR (qRT-PCR) assay was conducted to identify the expression level of lncRNA-ROR. Cell proliferation and viability were examined by MTT assay and colony formation assay...
February 20, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28216374/yin-yang-effect-of-tumor-infiltrating-b-cells-in-breast-cancer-from-mechanism-to-immunotherapy
#10
Zhigang Zhang, Ying Zhu, Zhen Wang, Ting Zhang, Pin Wu, Jian Huang
Breast cancer cells secrete chemokines, such as CXCL13, and antigens or express high endothelial venules, attracting B cells to infiltrate into the tumor microenvironment and play a "yin-yang" effect. They not only enhance the anti-tumor immune effect via secreting antibodies and influencing the Fas/FasL, CXCR4/CXCL12 and perforin pathways but they also promote the tumor to form a suppressive milieu by producing immunomodulatory factors and cytokines or using cell-to-cell education to induce the generation of Tregs or myeloid-derived suppressor cells (MDSCs)...
February 16, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28215307/structural-characterization-of-the-p75-neurotrophin-receptor-a-stranger-in-the-tnfr-superfamily
#11
M Vilar
Although p75 neurotrophin receptor (p75(NTR)) was the founding member of the tumor necrosis factor (TNF) receptor superfamily (TNFRSF), it is an atypical TNFRSF protein. p75(NTR) like TNF-R1 and Fas-R contain an extracellular domain with four cysteine-rich domains (CRD) and a death domain (DD) in the intracellular region. While TNFRSF proteins are activated by trimeric TNFSF ligands, p75(NTR) forms dimers activated by dimeric neurotrophins that are structurally unrelated to TNFSF proteins. In addition, although p75(NTR) shares with other members the interaction with the TNF receptor-associated factors to activate the NF-κB and cell death pathways, p75(NTR) does not interact with the DD-containing proteins FADD, TRADD, or MyD88...
2017: Vitamins and Hormones
https://www.readbyqxmd.com/read/28214830/hyper-elongation-in-colorectal-cancer-tissue-cerotic-acid-is-a-potential-novel-serum-metabolic-marker-of-colorectal-malignancies
#12
Adriana Mika, Jaroslaw Kobiela, Aleksandra Czumaj, Michał Chmielewski, Piotr Stepnowski, Tomasz Sledzinski
BACKGROUNDS/AIMS: Colorectal cancer (CRC) cells show some alterations of lipid metabolism. Elongation of fatty acids (FA) has not been studied in CRC tissues thus far. The aim of this study was to verify if CRC specimens and normal colon mucosa differ in terms of their levels of very long-chain FAs, a product of FA elongation. Moreover, the expression of elongase genes has been studied in normal tissue and CRC. Finally, we searched for some specific products of FA elongation in serum of CRC patients...
February 8, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28212270/antitumor-effects-of-laminaria-extract-fucoxanthin-on-lung-cancer
#13
ChengHan Mei, ShunChang Zhou, Lin Zhu, JiaXiong Ming, FanDian Zeng, Rong Xu
Lung cancer is the leading cause of cancer mortality worldwide and non-small-cell lung cancer (NSCLC) is the most common type. Marine plants provide rich resources for anticancer drug discovery. Fucoxanthin (FX), a Laminaria japonica extract, has attracted great research interest for its antitumor activities. Accumulating evidence suggests anti-proliferative effects of FX on many cancer cell lines including NSCLCs, but the detailed mechanisms remain unclear. In the present investigation, we confirmed molecular mechanisms and in vivo anti-lung cancer effect of FX at the first time...
February 15, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28211781/post-therapeutic-recovery-of-serum-interleukin-35-level-might-predict-positive-response-to-immunosuppressive-therapy-in-pediatric-aplastic-anemia
#14
Zhen Huang, Hongfei Tong, Yuan Li, Haixia Zhou, Jiangchao Qian, Juxiang Wang, Jichen Ruan
BACKGROUND: The predictive value of interleukin-35 (IL-35) on efficacy of immunosuppressive therapy (IST) in aplastic anemia (AA) has not been well investigated. The aim of the study was to evaluate the association between serum IL-35 level and response to IST in pediatric AA. METHODS: A total of 154 children with AA and 154 controls were included between January 2012 and December 2013. Blood and bone marrow fluid specimens were collected. Serum level of IL-35 was determined by enzyme-linked immunosorbent assay...
February 17, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28211202/role-of-modular-polyketide-synthases-in-the-production-of-polyether-ladder-compounds-in-ciguatoxin-producing-gambierdiscus-polynesiensis-and-g-excentricus-dinophyceae
#15
Gurjeet S Kohli, Katrina Campbell, Uwe John, Kirsty F Smith, Santiago Fraga, Lesley L Rhodes, Shauna A Murray
Gambierdiscus, a benthic dinoflagellate, produces ciguatoxins that cause the human illness Ciguatera. Ciguatoxins are polyether ladder compounds that have a polyketide origin, indicating that polyketide synthases (PKS) are involved in their production. We sequenced transcriptomes of G. excentricus and G. polynesiensis and found 264 contigs encoding single domain ketoacyl synthases (KS; G. excentricus: 106, G. polynesiensis: 143) and ketoreductases (KR; G. excentricus: 7, G. polynesiensis: 8) with sequence similarity to type I PKSs, as reported in other dinoflagellates...
February 17, 2017: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/28208221/increased-fas-ligand-expression-of-peripheral-b-1-cells-correlated-with-cd4-t-cell-apoptosis-in-filarial-infected-patients
#16
Rashmi Mishra, Santosh K Panda, Prakash K Sahoo, Bal, A K Satapathy
Cellular hypo responsiveness observed during helminth infections are attributed to factors like Antigen presenting cells (APC) dysfunction, increased Interleukin-10(IL-10), regulatory T cells and induction of CD4(+) T (Th) cell apoptosis.. Increased Fas ligand (FasL) expression on the surface of B-1 cells and induction of apoptosis of Th cells by FasL expressing B-1 cells due to helminth infection was demonstrated in murine model of helminth infection where as profile of FasL expression, Th cell apoptosis and correlation between these two populations of cells in clinical filariasis remain unknown...
February 16, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28208108/dietary-administration-of-edc-mixtures-a-focus-on-fish-lipid-metabolism
#17
O Carnevali, V Notarstefano, I Olivotto, M Graziano, P Gallo, I Di Marco Pisciottano, L Vaccari, A Mandich, E Giorgini, F Maradonna
Many man-made chemical compounds are recognized as endocrine disruptors and once released into the environment are likely to spread and bioaccumulate in wild species. Due to their lipophilic nature, these substances pass through the cell membrane or bind to specific receptors activating physiological responses that in the long run can cause reproductive impairment, physiological disorders, including the occurrence of metabolic syndromes. One significant source of contamination is represented by the consumption of polluted food...
February 6, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28206666/high-expression-of-fas-cd95-on-cd4-circulating-t-cells-an-exclusion-criterion-in-the-diagnosis-of-mycosis-fungoides
#18
Aurélie Du-Thanh, Anne Serre-Cousiné, Pierre Portalès, Céline Girard, Bernard Guillot, Olivier Dereure
The aim of this 10-year monocentric prospective study was to determine a cut-off value of Fas/CD95 expression by peripheral blood CD4+ T lymphocytes in discriminating patients with mycosis fungoides from controls with cutaneous benign lymphocytic conditions. CD95 expression in peripheral blood CD4+ T lymphocytes was measured using flow cytometry in 330 patients referred for diagnosis: 104 with mycosis fungoides and 226 with eczema, psoriasis, drug reaction, etc. The sensitivity and specificity of different thresholds of CD95 expression were calculated regarding the final diagnosis of patients with mycosis fungoides or controls...
February 16, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28204815/enzyme-treated-ecklonia-cava-extract-inhibits-adipogenesis-through-the-downregulation-of-c-ebp%C3%AE-in-3t3-l1-adipocytes
#19
In-Hye Kim, Taek-Jeong Nam
In this study, we examined the inhibitory effects of enzyme- treated Ecklonia cava (EEc) extract on the adipogenesis of 3T3-L1 adipocytes. The components of Ecklonia cava (E. cava) were first separated and purified using the digestive enzymes pectinase (Rapidase® X‑Press L) and cellulase (Rohament® CL). We found that the EEc extract contained three distinct phlorotannins: eckol, dieckol and phlorofucofuroeckol-A. Among the phlorotannins, dieckol was the most abundant in the EEc extract at 16 mg/g. Then we examined the inhibitory effects of EEc extract treatment on differentiation‑related transcription factors and on adipogenesis‑related gene expression in vitro using 3T3-L1 adipocytes...
March 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28202906/bar502-a-dual-fxr-and-gpbar1-agonist-promotes-browning-of-white-adipose-tissue-and-reverses-liver-steatosis-and-fibrosis
#20
Adriana Carino, Sabrina Cipriani, Silvia Marchianò, Michele Biagioli, Chiara Santorelli, Annibale Donini, Angela Zampella, Maria Chiara Monti, Stefano Fiorucci
Non-alcoholic steatohepatitis (NASH) is a highly prevalent chronic liver disease. Here, we have investigated whether BAR502, a non-bile acid, steroidal dual ligand for FXR and GPBAR1, reverses steato-hepatitis in mice fed a high fat diet (HFD) and fructose. After 9 week, mice on HFD gained ≈30% of b.w (P < 0.01 versus naïve) and were insulin resistant. These overweighting and insulin resistant mice were randomized to receive HFD or HFD in combination with BAR502. After 18 weeks, HFD mice developed NASH like features with severe steato-hepatitis and fibrosis, increased hepatic content of triacylglycerol and cholesterol and expression of SREPB1c, FAS, ApoC2, PPARα and γ, α-SMA, α1 collagen and MCP1 mRNAs...
February 16, 2017: Scientific Reports
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