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https://www.readbyqxmd.com/read/28743100/studies-on-secondary-metabolite-profiling-anti-inflammatory-potential-in-vitro-photoprotective-and-skin-aging-related-enzyme-inhibitory-activities-of-malaxis-acuminata-a-threatened-orchid-of-nutraceutical-importance
#1
Biswajit Bose, Hiranjit Choudhury, Pramod Tandon, Suman Kumaria
Malaxis acuminata D. Don., a small, terrestrial orchid, is endemic to tropical Himalayas at an altitude of 1200-2000m asl. The dried pseudobulbs are important ingredients of century old ayurvedic drug 'Ashtavarga' and a polyherbal immune-booster nutraceutical 'Chyavanprash', known to restore vigour, vitality and youthfulness. Considering tremendous medicinal importance of this threatened orchid species, a detailed study was undertaken for the first time to address its antioxidant potential, secondary metabolite contents and biological activities against skin-aging related enzymes (anti-collagenase, anti-elastase, anti-tyrosinase and xanthine oxidase) and anti-inflammatory activity (5-lipoxygenase and hyaluronidase) in different plant parts of wild and in vitro-derived plants of M...
July 12, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28742939/disparate-peroxisome-related-defects-in-arabidopsis-pex6-and-pex26-mutants-link-peroxisomal-retrotranslocation-and-oil-body-utilization
#2
Kim L Gonzalez, Wendell A Fleming, Yun-Ting Kao, Zachary J Wright, Savina V Venkova, Meredith J Ventura, Bonnie Bartel
Catabolism of fatty acids stored in oil bodies is essential for Arabidopsis seed germination and seedling development. This fatty acid breakdown occurs in peroxisomes, organelles that sequester oxidative reactions. Import of peroxisomal enzymes is facilitated by peroxins including PEX5, a receptor that delivers cargo proteins from the cytosol to the peroxisomal matrix. After cargo delivery, a complex of the PEX1 and PEX6 ATPases and the PEX26 tail-anchored membrane protein removes ubiquitinated PEX5 from the peroxisomal membrane...
July 25, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28742883/effects-of-oral-florfenicol-and-azithromycin-on-gut-microbiota-and-adipogenesis-in-mice
#3
Rui Li, Hexing Wang, Qingfeng Shi, Na Wang, Zhijie Zhang, Chenglong Xiong, Jianxiang Liu, Yue Chen, Lufang Jiang, Qingwu Jiang
Certain antibiotics detected in urine are associated with childhood obesity. In the current experimental study, we investigated two representative antibiotics detected in urine, florfenicol and azithromycin, for their early effects on adipogenesis, gut microbiota, short-chain fatty acids (SCFAs), and bile acids in mice. Thirty C57BL/6 mice aged four weeks were randomly divided into three groups (florfenicol, azithromycin and control). The two experimental groups were administered florfenicol or azithromycin at 5 mg/kg/day for four weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28742713/does-prolonged-enteral-feeding-with-supplemental-omega-3-fatty-acids-impact-on-recovery-post-esophagectomy-results-of-a-randomized-double-blind-trial
#4
Laura A Healy, Aoife Ryan, Suzanne L Doyle, Éadaoin Bríd Ní Bhuachalla, Samantha Cushen, Ricardo Segurado, Thomas Murphy, Narayanasamy Ravi, Claire L Donohoe, John V Reynolds
OBJECTIVE: This randomized controlled trial (RCT) hypothesized that prolonged enteral nutrition (EN) with supplemental eicosapentanoic acid (EPA), an omega-3 fatty acid with immune and anabolic properties, may impact on clinical and nutritional outcomes. BACKGROUND: Esophagectomy is associated with significant weight loss and catabolism, and negatively impacts quality of life (QL). Strategies to counter sustained catabolism have therapeutic rationale. METHODS: This multicenter, double-blind, placebo-controlled RCT was powered on a 5% difference in lean body mass (LBM) at 1 month...
July 24, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28742527/biotechnological-potential-of-insect-fatty-acid-modifying-enzymes
#5
Michal Tupec, Aleš Buček, Irena Valterová, Iva Pichová
There are more than one million described insect species. This species richness is reflected in the diversity of insect metabolic processes. In particular, biosynthesis of secondary metabolites, such as defensive compounds and chemical signals, encompasses an extraordinarily wide range of chemicals that are generally unparalleled among natural products from other organisms. Insect genomes, transcriptomes and proteomes thus offer a valuable resource for discovery of novel enzymes with potential for biotechnological applications...
July 25, 2017: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/28742517/type-1-rhizomelic-chondrodysplasia-punctata-with-a-homozygous-pex7-mutation
#6
Nursel Muratoğlu Şahin, Meliha Esra Bilici, Erdal Kurnaz, Melek Pala Akdoğan, Serdar Ceylaner, Zehra Aycan
INTRODUCTION: Rhizomelic chondrodysplasia punctata (RCDP) is a rare peroxisomal disease characterised by punctate calcifications of non-ossified cartilage epiphyseal centres. The main biochemical marker of all RCDP types is a decrease in the levels of plasmalogens. Additionally, the accumulation of phytanic acid can be used as a differential marker between types of RDCP. Due to the biochemical overlap between types 1 and 5 RCDP, a genetic analysis of these genes should be performed in patients to identify the type...
July 25, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28742081/serum-fatty-acid-patterns-in-patients-with-schizophrenia-a-targeted-metabonomics-study
#7
X Yang, L Sun, A Zhao, X Hu, Y Qing, J Jiang, C Yang, T Xu, P Wang, J Liu, J Zhang, L He, W Jia, C Wan
Previous studies have indicated that schizophrenia is linked to abnormal lipid metabolism. Free fatty acids (FFAs) in peripheral blood can reflect the status of lipid metabolism in human body. The purpose of this study was to scan the FFA pattern and elucidate the characteristics of lipid metabolic abnormality in schizophrenia patients. One hundred and ten patients with schizophrenia (SCZs) and 109 healthy controls (HCs) were included in the study and divided into a discovery set and a validation set. Forty-seven serum FFAs were detected by UPLC-QTOF-MS and 39 of them were absolutely quantified by establishing standard curves...
July 25, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28742009/megasphaera-hexanoica-sp-nov-a-medium-chain-carboxylic-acid-producing-bacterium-isolated-from-a-cow-rumen
#8
Byoung Seung Jeon, Seil Kim, Byoung-In Sang
Strain MHT, a strictly anaerobic, Gram-stain-negative, non-spore-forming, spherical coccus or coccoid-shaped microorganism, was isolated from a cow rumen during a screen for hexanoic acid-producing bacteria. The microorganism grew at 30-40 °C and pH 5.5-7.5 and exhibited production of various short- and medium-chain carboxylic acids (acetic acid, butyric acid, pentanoic acid, isobutyric acid, isovaleric acid, hexanoic acid, heptanoic acid and octanoic acid), as well as H2 and CO2 as biogas. Phylogenetic analysis based on 16S rRNA gene sequencing demonstrated that MHT represents a member of the genus Megasphaera, with the closest relatives being Megapsphaera indica NMBHI-10T (94...
July 26, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28742007/galliscardovia-ingluviei-gen-nov-sp-nov-a-thermophilic-bacterium-of-the-family-bifidobacteriaceae-isolated-from-the-crop-of-a-laying-hen-gallus-gallus-f-domestica
#9
R Pechar, J Killer, R Švejstil, H Salmonová, M Geigerová, V Bunešová, V Rada, O Benada
Bacteria with potential probiotic applications are not yet sufficiently explored, even for animals with economic importance. Therefore, we decided to isolate and identify representatives of the family Bifidobacteriaceae, which inhabit the crop of laying hens. During the study, a fructose-6-phosphate phosphoketolase-positive strain, RP51T, with a regular/slightly irregular and sometimes an S-shaped slightly curved rod-like shape, was isolated from the crop of a 13 -month-old Hisex Brown hybrid laying hen. The best growth of the Gram-stain-positive bacterium, which was isolated using Bifidobacterium-selective mTPY agar, was found out to be under strictly anaerobic conditions, however an ability to grow under microaerophilic and aerobic conditions was also observed...
July 21, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28742006/flavobacterium-soyangense-sp-nov-a-psychrotolerant-bacterium-isolated-from-an-oligotrophic-freshwater-lake
#10
Gi Gyun Nam, Yochan Joung, Miri Park, Suhyun Kim, Hyoung Tae Jeon, Jang-Cheon Cho
A bacterial strain, designated IMCC26223T, was isolated from an oligotrophic freshwater lake, Lake Soyang, Korea. Cells of strain IMCC26223T were Gram-staining negative, strictly aerobic, non-motile and short-rod-shaped. Growth occurred at pH 6-8 (optimum, pH 7.0), at 4-25 °C (optimum, 15 °C) and with 0-0.5 % (w/v) NaCl (optimum, 0 %). Phylogenetic analyses based on 16S rRNA gene sequences showed that strain IMCC26223T was identified as a member of the genus Flavobacterium and most closely related to Flavobacterium fluvii H7T (97...
July 26, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28741997/paracoccus-hibiscisoli-sp-nov-isolated-from-the-rhizosphere-of-mugunghwa-hibiscus-syriacus
#11
Pei Lin, Zheng-Fei Yan, Kyung-Hwa Won, Jung-Eun Yang, Chang-Tian Li, MooChang Kook, Qi-Jun Wang, Tae-Hoo Yi
A Gram-reaction-negative, aerobic, non-motile, short-rod-shaped bacterium (THG-T2.31T) was isolated from the rhizosphere of Mugunghwa (Hibiscus syriacus). Growth occurred at 10-35 °C (optimum 28 °C), at pH 5.0-8.0 (optimum pH 7.0) and with 0-4.0 % NaCl (optimum 1.0 %). Based on 16S rRNA gene sequence analysis, the nearest phylogenetic neighbours of strain THG-T2.31T were identified as Paracoccus marcusii DSM 11574T (98.4 %), Paracoccus haeundaensis BC74171T (98.3 %), Paracoccus carotinifaciens E-396T (98...
July 26, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28741995/merdimonas-faecis-gen-nov-sp-nov-isolated-from-human-faeces
#12
Boram Seo, Ju Eun Yoo, Yung Mi Lee, GwangPyo Ko
A strictly anaerobic Gram-stain-positive, non-motile and non-spore-forming bacterial strain, BR31T, was isolated from a faecal sample of a healthy human. Bacterial colonies were ivory-coloured on GAM agar and composed of rod-shaped cells with rounded ends approximately 1.4-2.1×0.5-0.6 µm in size. According to comparative analysis based on 16S rRNA gene sequences, strain BR31T formed a distinct phylogenetic lineage that reflects a new genus within Clostridium cluster XIVa in the family Lachnospiraceae, with highest similarity to Eubacterium contortum DSM 3982T (94...
July 26, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28741994/perlucidibaca-aquatica-sp-nov-isolated-from-fresh-water
#13
Kiwoon Baek, Ji-Hye Han, Mi-Hwa Lee
A Gram-staining-negative, non-motile, non-pigmented, strictly aerobic and rod-shape bacterium, designated BK296T, was isolated from stream water originating from a limestone cave in Samcheok, Korea. Optimal growth of strain BK296T was observed at 30 °C, pH 7.0-8.0 and without NaCl. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain BK296T belonged to the genus Perlucidibaca, forming a robust clade with a member of the genus, and was most closely related to Perlucidibaca piscinae (97...
July 21, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28741993/muricauda-marina-sp-nov-isolated-from-marine-snow-of-yellow-sea
#14
Ying Su, Xiaoting Yang, Yanan Wang, Yuyang Liu, Qiaomeng Ren, Xiao-Hua Zhang
A Gram-staining-negative, long rod-shaped, non-motile, strictly aerobic bacterial strain, designated H19-56T, was isolated from a surface marine snow sample collected from the Yellow Sea near China. Phylogenetic analysis based on 16S rRNA gene sequences indicated that H19-56T represented a member of the genus Muricauda and showed the highest sequence similarity to Muricauda ruestringensis B1T (96.9 %). H19-56T grew optimally at pH 8.0, 32 °C and in the presence of 3 % (w/v) NaCl. The DNA G+C content was 43...
July 26, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28741992/herpetosiphon-gulosus-sp-nov-a-filamentous-predatory-bacterium-isolated-from-sandy-soil-and-herpetosiphon-giganteus-sp-nov-nom-rev
#15
Xinli Pan, Hirokazu Kage, Karin Martin, Markus Nett
Three filamentous gliding bacteria from the German Collection of Microorganisms and Cell Cultures, Hp g11, Hp g471 and Hp g472, were subjected to a phylogenetic analysis. These organisms had previously been classified as members of the genus Herpetosiphon based on their growth physiology and morphology. However, a taxonomic assignment at the species level had not been carried out. Analysis of 16S rRNA sequences now confirmed the close relationship of strain Hp g472 to Herpetosiphon aurantiacus DSM 785T (98...
July 26, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28741990/novosphingobium-fontis-sp-nov-isolated-from-a-spring
#16
Shih-Yi Sheu, Li-Ping Liu, Chiu-Chung Young, Wen-Ming Chen
A bacterial strain designated STM-14T was isolated from a spring in Taiwan and characterized using a polyphasic taxonomic approach. Strain STM-14T was a Gram-stain-negative, aerobic, poly-β-hydroxybutyrate-accumulating, non-motile, rod-shaped bacterium and formed cream-coloured colonies. Strain STM-14T grew at 15-37 °C (optimum, 30 °C), at pH 5.0-9.0 (optimum, pH 6.0) and with 0-0.5 % (w/v) NaCl (optimum, 0 %). Phylogenetic analyses based on 16S rRNA gene sequences showed that strain STM-14T belonged to the genus Novosphingobium and showed the highest levels of sequence similarity to Novosphingobium naphthae D39T (98...
July 21, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28741904/prevention-of-childhood-obesity-and-food-policies-in-latin-america-from-research-to-practice
#17
R Pérez-Escamilla, C K Lutter, C Rabadan-Diehl, A Rubinstein, A Calvillo, C Corvalán, C Batis, E Jacoby, S Vorkoper, L Kline, E Ewart-Pierce, J A Rivera
BACKGROUND: Addressing childhood obesity in Latin America requires a package of multisectoral, evidence-based policies that enable environments conducive to healthy lifestyles. OBJECTIVE: Identify and examine key elements to translating research into effective obesity policies in Latin America. METHODS: We examined obesity prevention policies through case studies developed with an expert in the specific policy. Policies were selected based on their level of implementation, visibility and potential impact to reduce childhood obesity...
July 2017: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28741793/telomerase-enzyme-deficiency-promotes-metabolic-dysfunction-in-murine-hepatocytes-upon-dietary-stress
#18
Raquel M Alves-Paiva, Sachiko Kajigaya, Xingmin Feng, Jichun Chen, Marie Desierto, Susan Wong, Danielle M Townsley, Flávia S Donaires, Adeline Bertola, Bin Gao, Neal S Young, Rodrigo T Calado
Short telomeres and genetic telomerase defects are risk factors for some human liver diseases, ranging from non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) to cirrhosis. In murine models, telomere dysfunction has been shown to metabolically compromise hematopoietic cells, liver, and heart via the activation of the p53-PGC axis METHODS: Tert- and Terc-deficient mice were challenged with liquid high fat diet (HFD). Liver metabolic contents were analyzed by CE-TOFMS and liver fat content was confirmed by confocal and electronic microscopy RESULTS: Tert-deficient but not Terc-deficient mice develop hepatocyte injury and frank steatosis when challenged with liquid HFD...
July 25, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28741686/gpr55-receptor-antagonist-decreases-glycolytic-activity-in-panc-1-pancreatic-cancer-cell-line-and-tumor-xenografts
#19
Michel Bernier, Jonathan Catazaro, Nagendra S Singh, Artur Wnorowski, Anna Boguszewska-Czubara, Krzysztof Jozwiak, Robert Powers, Irving W Wainer
The Warburg effect is a predominant metabolic pathway in cancer cells characterized by enhanced glucose uptake and its conversion to L-lactate and is associated with upregulated expression of HIF-1α and activation of the EGFR-MEK-ERK, Wnt-β-catenin and PI3K-AKT signaling pathways. (R,R')-4'-methoxy-1-naphthylfenoterol ((R,R')-MNF) significantly reduces proliferation, survival, and motility of PANC-1 pancreatic cancer cells through inhibition of the GPR55 receptor. We examined (R,R')-MNF's effect on glycolysis in PANC-1 cells and tumors...
July 25, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28741625/omega-3-polyunsaturated-fatty-acids-in-youths-with-attention-deficit-hyperactivity-disorder-adhd-a-systematic-review-and-meta-analysis-of-clinical-trials-and-biological-studies
#20
JanePei-Chen Chang, Kuan-Pin Su, Valeria Mondelli, Carmine M Pariante
The role of omega-3 polyunsaturated fatty acids (omega-3 or n-3 PUFAs) in the pathogenesis and treatment of children and adolescents with attention deficit hyperactivity disorder (ADHD) is unclear. A systematic review followed by meta-analysis was conducted on: (1) randomized controlled trials (RCTs) assessing the effects of n-3 PUFAs on clinical symptoms and cognition in children and adolescent with ADHD; and (2) case-control studies assessing the levels of n-3 PUFAs in blood and buccal tissues of children and adolescents with ADHD...
July 25, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
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