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https://www.readbyqxmd.com/read/28944893/pigment-epithelium%C3%A2-derived-factor-protects-human-glomerular-mesangial-cells-from-diabetes-via-noxo1%C3%A2-inos-suppression
#1
Ling Gao, Yingjie Hu, Jing Li
The authors previously reported that pigment epithelium‑derived factor (PEDF) protects the diabetic kidney from fibrosis via its anti‑oxidative effects. However, the underlying molecular mechanism has never been revealed. The present study aimed to investigate how PEDF protects mesangial cells from diabetes induced damage. Human mesangial cells were exposed to a diabetic environment [30 mmol/l glucose and 200 mg advanced glycation end products (AGEs)] in the absence or presence of PEDF (200 mg/l). The superoxide and peroxynitrite productions were measured by fluorescent assay...
September 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944027/symbiosis-constraints-strong-mycobiont-control-limits-nutrient-response-in-lichens
#2
Kristin Palmqvist, Oskar Franklin, Torgny Näsholm
Symbioses such as lichens are potentially threatened by drastic environmental changes. We used the lichen Peltigera aphthosa-a symbiosis between a fungus (mycobiont), a green alga (Coccomyxa sp.), and N2-fixing cyanobacteria (Nostoc sp.)-as a model organism to assess the effects of environmental perturbations in nitrogen (N) or phosphorus (P). Growth, carbon (C) and N stable isotopes, CNP concentrations, and specific markers were analyzed in whole thalli and the partners after 4 months of daily nutrient additions in the field...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28944006/regulation-of-gene-expression-is-associated-with-tolerance-of-the-arctic-copepod-calanus-glacialis-to-co2-acidified-sea-water
#3
Allison Bailey, Pierre De Wit, Peter Thor, Howard I Browman, Reidun Bjelland, Steven Shema, David M Fields, Jeffrey A Runge, Cameron Thompson, Haakon Hop
Ocean acidification is the increase in seawater pCO 2 due to the uptake of atmospheric anthropogenic CO 2, with the largest changes predicted to occur in the Arctic seas. For some marine organisms, this change in pCO 2, and associated decrease in pH, represents a climate change-related stressor. In this study, we investigated the gene expression patterns of nauplii of the Arctic copepod Calanus glacialis cultured at low pH levels. We have previously shown that organismal-level performance (development, growth, respiration) of C...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28943914/metastatic-gastric-cancer-from-breast-carcinoma-a-report-of-78-cases
#4
Liang Xu, Shujing Liang, Ningning Yan, Le Zhang, Hailiang Gu, Xiaochun Fei, Yingchun Xu, Fengchun Zhang
The metastatic spread of breast carcinoma to the stomach is rare. There are a small number of previous studies that report metastases from the breast to the stomach and these provide limited information regarding this infrequent event. Consequently, the clinicopathological features, clinical outcomes and the optimal treatment for these patients remain to be elucidated. In the present study, 78 cases of gastric metastases from breast cancer, including the current case, were identified from previous studies between 1960 and 2015...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943905/screening-the-key-genes-of-hepatocellular-adenoma-via-microarray-analysis-of-dna-expression-and-methylation-profiles
#5
Dan Liu, Pengfei Liu, Liye Cao, Quan Zhang, Yaqing Chen
The aim of the present study was to identify the biomarkers involved in the development of hepatocellular adenoma (HCA) through integrated analysis of gene expression and methylation microarray. The microarray dataset GSE7473, containing HNF1α-mutated HCA and their corresponding non-tumor livers, 5 HNF1α-mutated HCA and 4 non-related non-tumor livers, was downloaded from the Gene Expression Omnibus (GEO) database. The DNA methylation profile GSE43091, consisting of 50 HCA and 4 normal liver tissues, was also downloaded from the GEO database...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943865/the-effects-of-nutrient-imbalances-and-temperature-on-the-biomass-stoichiometry-of-freshwater-bacteria
#6
Katherine N Phillips, Casey M Godwin, James B Cotner
Two contemporary effects of humans on aquatic ecosystems are increasing temperatures and increasing nutrient concentrations from fertilizers. The response of organisms to these perturbations has important implications for ecosystem processes. We examined the effects of phosphorus (P) supply and temperature on organismal carbon, nitrogen and phosphorus (C, N, and P) content, cell size and allocation into internal P pools in three strains of recently isolated bacteria (Agrobacterium sp., Flavobacterium sp., and Arthrobacter sp...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28943862/the-chemical-and-antibacterial-evaluation-of-st-john-s-wort-oil-macerates-used-in-kosovar-traditional-medicine
#7
James T Lyles, Austin Kim, Kate Nelson, Angelle L Bullard-Roberts, Avni Hajdari, Behxhet Mustafa, Cassandra L Quave
Hypericum perforatum L. (Hypericaceae), or St. John's Wort, is a well-known medicinal herb often associated with the treatment of anxiety and depression. Additionally, an oil macerate (Oleum Hyperici) of its flowering aerial parts is widely used in traditional medicine across the Balkans as a topical wound and ulcer salve. Other studies have shown that Oleum Hyperici reduces both wound size and healing time. Of its active constituents, the naphthodianthrone hypericin and phloroglucinol hyperforin are effective antibacterial compounds against various Gram-positive bacteria...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28943859/job-crafting-older-workers-mechanism-for-maintaining-person-job-fit
#8
Carol M Wong, Lois E Tetrick
Aging at work is a dynamic process. As individuals age, their motives, abilities and values change as suggested by life-span development theories (Lang and Carstensen, 2002; Kanfer and Ackerman, 2004). Their growth and extrinsic motives weaken while intrinsic motives increase (Kooij et al., 2011), which may result in workers investing their resources in different areas accordingly. However, there is significant individual variability in aging trajectories (Hedge et al., 2006). In addition, the changing nature of work, the evolving job demands, as well as the available opportunities at work may no longer be suitable for older workers, increasing the likelihood of person-job misfit...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28942845/community-composition-specificity-and-potential-role-of-phosphorus-solubilizing-bacteria-attached-on-the-different-bloom-forming-cyanobacteria
#9
Liu Yang, Yuqian Liu, Xiuyun Cao, Zijun Zhou, Siyang Wang, Jian Xiao, Chunlei Song, Yiyong Zhou
The abundance, phosphorus solubilizing ability and community composition of phosphorus solubilizing bacteria (PSB) attached on two bloom-forming cyanobacteria, Microcystis and Anabeana, were investigated in Guanqiao ponds in 2014 and Lake Chaohu in 2015 and 2016. Thirty organic phosphate-mineralizing bacteria (OPB) and eighteen inorganic phosphate-solubilizing bacteria (IPB) isolated from Guanqiao ponds and Lake Chaohu were identified. The community compositions of PSB attached on Microcystis and Anabeana were found to be entirely different...
December 2017: Microbiological Research
https://www.readbyqxmd.com/read/28942570/replacement-of-tifton-hay-by-spineless-cactus-in-girolando-post-weaned-heifers%C3%A2-diets
#10
Leonardo José Assis de Barros, Marcelo de Andrade Ferreira, Julio César Vieira de Oliveira, Djalma Cordeiro Dos Santos, Juana Catarina Cariri Chagas, Adryanne Marjorie Souza Vitor Alves, Aghata Elins Moreira da Silva, Wandemberg Rocha Freitas
This study aims to evaluate the effect of the Tifton 85 hay (Cynodon dactylon L. Pers) replacement by Orelha de Elefante Mexicana spineless cactus (Opuntia stricta [Haw.] Haw) on the nutrient intake and digestibility, growth performance, microbial protein synthesis, and efficiency of dietary nitrogen compound utilization in the diets of Girolando heifers. Twenty-four (3.5 months and 100 kg ± 3.5 kg) Girolando heifers (5/8 Holstein x Gyr) were used and arranged in a completely randomized design. Dry matter, organic matter, crude protein, and neutral detergent fiber decreased linearly as a function of the levels of Tifton hay (TH) replacement by Orelha de Elefante Mexicana spineless cactus (OEM)...
September 23, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28942552/soil-spore-bank-communities-of-ectomycorrhizal-fungi-in-endangered-chinese-douglas-fir-forests
#11
Zhugui Wen, Liang Shi, Yangze Tang, Lizhou Hong, Jiawang Xue, Jincheng Xing, Yahua Chen, Kazuhide Nara
Chinese Douglas-fir (Pseudotsuga sinensis) is an endangered Pinaceae species found in several isolated regions of China. Although soil spore banks of ectomycorrhizal (ECM) fungi can play an important role in seedling establishment after disturbance, such as in the well-known North American relative (Pseudotsuga menziesii), we have no information about soil spore bank communities in relict forests of Chinese Douglas-fir. We conducted bioassays of 73 soil samples collected from three Chinese Douglas-fir forests, using North American Douglas-fir as bait seedlings, and identified 19 species of ECM fungi...
September 23, 2017: Mycorrhiza
https://www.readbyqxmd.com/read/28942511/effects-of-co-composting-of-farm-manure-and-biochar-on-plant-growth-and-carbon-mineralization-in-an-alkaline-soil
#12
Muhammad Farooq Qayyum, Fatima Liaquat, Rabia Abdur Rehman, Mehreen Gul, Muhammad Zafar Ul Hye, Muhammad Rizwan, Muhammad Zia Ur Rehaman
In the present study, the effects of co-composts of biochar (BC) and farm manure (FM) on the growth of wheat (Triticum aestivum L.) and carbon mineralization in an alkaline soil were investigated. The co-composts of FM and BC were prepared at various ratios (FM100:BC0, FM75:BC25, FM50:BC50, FM25:BC75, FM0:BC100) using aboveground piles and were used in two separate experiments conducted simultaneously. In the plant growth trial, prepared co-composts were applied at a rate of 2% w/w and wheat was grown at two fertilizer levels (half and full) until maturity...
September 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28942312/evaluation-of-benefits-and-risks-associated-with-the-agricultural-use-of-organic-wastes-of-pharmaceutical-origin
#13
Mirko Cucina, Chiara Tacconi, Anna Ricci, Daniela Pezzolla, Simone Sordi, Claudia Zadra, Giovanni Gigliotti
Industrial fermentations for the production of pharmaceuticals generate large volumes of wastewater that can be biologically treated to recover plant nutrients through the application of pharmaceutical-derived wastes to the soil. Nevertheless, benefits and risks associated with their recovery are still unexplored. Thus, the aim of the present work was to characterize three potential organic residues (sludge, anaerobic digestate and compost) derived from the wastewater generated by the daptomycin production process...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28942164/controlling-the-melt-dripping-of-polyester-fabrics-by-tuning-the-ionic-strength-of-polyhedral-oligomeric-silsesquioxane-and-sodium-montmorillonite-coatings-assembled-through-layer-by-layer
#14
Federico Carosio, Alessandro Di Pierro, Jenny Alongi, Alberto Fina, Guido Saracco
This work deals with the Layer by Layer (LbL) assembly of hybrid organic/inorganic flame retardant coatings made of Octa-ammonium POSS (polyhedral oligomeric silsesquioxane) and sodium montmorillonite clay on polyester (PET) fabrics. The effects of ionic strength on the achieved flame retardancy properties were investigated. The coating growth asa function of different ionic strengths was evaluated by infrared spectroscopy. 0.10M NaCl was found able to promote the highest adsorption of each coating species at each deposition step strongly affecting clay stacking as evaluated by X-ray diffraction measurements...
September 18, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28942064/the-oxidative-stress-in-allelopathy-participation-of-prenyllipid-antioxidants-in-the-response-to-juglone-in-chlamydomonas-reinhardtii
#15
Beatrycze Nowicka, Andrzej Żądło, Bartosz Pluciński, Jerzy Kruk, Paulina Kuczyńska
Allelopathy is a phenomenon, where one species releases compounds able to inhibit the growth of other species. Juglone, 5-hydroxy-1,4-naphtoquinone, is an allelochemical produced by walnut trees. The main mode of juglone toxicity is the formation of semiquinone radicals, able to reduce O2 to superoxide. Prenyllipid antioxidants such as tocopherol and plastoquinone are important for antioxidant defense in photosynthetic organisms. Here we assess their participation in the response to juglone. The impact of 20 μM juglone on the content of photosynthetic pigments and prenyllipid antioxidants in green microalga Chlamydomonas reinhardtii was measured over an incubation period of 7...
September 21, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28941912/desiccation-an-environmental-and-food-industry-stress-that-bacteria-commonly-face
#16
REVIEW
Julia Esbelin, Tiago Santos, Michel Hébraud
Water is essential for all living organisms, for animals as well as for plants and micro-organisms. For these latter, the presence of water or a humid environment with a high air relative humidity (RH) is necessary for their survival and growth. Thus, variations in the availability of water or in the air relative humidity constitute widespread environmental stresses which challenge microorganisms, and especially bacteria. Indeed, in their direct environment, bacteria are often faced with conditions that remove cell-bound water through air-drying of the atmosphere...
February 2018: Food Microbiology
https://www.readbyqxmd.com/read/28941896/restoration-of-gaba-production-machinery-in-lactobacillus-brevis-by-accessible-carbohydrates-anaerobiosis-and-early-acidification
#17
Qinglong Wu, Nagendra P Shah
Lactobacillus brevis is an efficient cell factory for producing bioactive γ-aminobutyric acid (GABA) by its gad operon-encoded glutamic acid decarboxylase (GAD) system. However, little mechanistic insights have been reported on the effects of carbohydrate, oxygen and early acidification on GABA production machinery in Lb. brevis. In the present study, GABA production from Lb. brevis was enhanced by accessible carbohydrates. Fast growth of this organism was stimulated by maltose and xylose. However, its GABA production was highly suppressed by oxygen exposure, but was fully restored by anaerobiosis that up-regulated the expression of gad operon in Lb...
February 2018: Food Microbiology
https://www.readbyqxmd.com/read/28941454/components-of-the-hepatocellular-carcinoma-microenvironment-and-their-role-in-tumor-progression
#18
REVIEW
M V Novikova, N V Khromova, P B Kopnin
This review summarizes recently published data on the mechanisms of tumor cell interaction with the tumor microenvironment. Tumor stroma influences the processes of hepatocarcinogenesis, epithelial-to-mesenchymal transition, invasion, and metastasis. The tumor microenvironment includes both cellular and noncellular components. Main cellular components of hepatocellular carcinoma (HCC) stroma are tumor-associated fibroblasts, hepatic stellate cells, immune cells, and endothelial cells that produce extracellular components of tumor microenvironment such as extracellular matrix, various proteins, proteolytic enzymes, growth factors, and cytokines...
August 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28941240/dynamic-changes-in-brain-mesenchymal-perivascular-cells-associate-with-multiple-sclerosis-disease-duration-active-inflammation-and-demyelination
#19
Ellen Iacobaeus, Rachael V Sugars, Anton Törnqvist Andrén, Jessica J Alm, Hong Qian, Janek Frantzen, Jia Newcombe, Kanar Alkass, Henrik Druid, Matteo Bottai, Matias Röyttä, Katarina Le Blanc
Vascular changes, including blood brain barrier destabilization, are common pathological features in multiple sclerosis (MS) lesions. Blood vessels within adult organs are reported to harbor mesenchymal stromal cells (MSCs) with phenotypical and functional characteristics similar to pericytes. We performed an immunohistochemical study of MSCs/pericytes in brain tissue from MS and healthy persons. Post-mortem brain tissue from patients with early progressive MS (EPMS), late stage progressive MS (LPMS), and healthy persons were analyzed for the MSC and pericyte markers CD146, platelet-derived growth factor receptor beta (PDGFRβ), CD73, CD271, alpha-smooth muscle actin, and Ki67...
September 23, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28940884/involvement-of-pdgf-ligands-and-receptors-in-tumorigenesis
#20
REVIEW
Carl-Henrik Heldin, Johan Lennartsson, Bengt Westermark
Platelet-derived growth factor (PDGF) isoforms and their receptors have important roles during embryogenesis, particularly in the development of various mesenchymal cell types in different organs. In the adult, PDGF stimulates wound healing and regulates tissue homeostasis. However, over-activity of PDGF signaling is associated with malignancies and other diseases characterized by excessive cell proliferation, such as fibrotic conditions and atherosclerosis. In certain tumors, genetic or epigenetic alterations of the genes for PDGF ligands and receptors drives tumor cell proliferation and survival...
September 22, 2017: Journal of Internal Medicine
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