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https://www.readbyqxmd.com/read/28107722/microalgae-biorefinery-high-value-products-perspectives
#1
Kit Wayne Chew, Jing Ying Yap, Pau Loke Show, Ng Hui Suan, Joon Ching Juan, Tau Chuan Ling, Duu-Jong Lee, Jo-Shu Chang
Microalgae have received much interest as a biofuel feedstock in response to the uprising energy crisis, climate change and depletion of natural sources. Development of microalgal biofuels from microalgae does not satisfy the economic feasibility of overwhelming capital investments and operations. Hence, high-value co-products have been produced through the extraction of a fraction of algae to improve the economics of a microalgae biorefinery. Examples of these high-value products are pigments, proteins, lipids, carbohydrates, vitamins and anti-oxidants, with applications in cosmetics, nutritional and pharmaceuticals industries...
January 10, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28107612/hemin-binding-by-porphyromonas-gingivalis-strains-is-dependent-on-the-presence-of-a-lps
#2
Minnie Rangarajan, Joseph Aduse-Opoku, Nikolay A Paramonov, Ahmed Hashim, Michael A Curtis
Porphyromonas gingivalis is a Gram-negative black pigmenting anaerobe unable to synthesise haem (Fe (II)-protoporphyrin IX) or hemin (Fe(III)-protoporphyrin IX-Cl) which are important growth/virulence-factors, and must therefore derive them from the host P. gingivalis expresses several proteinaceous hemin -binding-sites which are important in the binding/ transport of haem/hemin from the host. P. gingivalis also synthesises several virulence factors, namely cysteine-proteases Arg- and Lys-gingipains and two lipopolysaccharides (LPS), O-LPS and A-LPS...
January 20, 2017: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/28107564/tattoo-removal-by-q-switched-yag-laser-client-satisfaction
#3
K Hutton Carlsen, J Esmann, J Serup
BACKGROUND: Tattoo removal by Q-switched lasers is golden standard; however, clients' satisfaction with treatment is little known. OBJECTIVE: To determine clients' satisfaction with tattoo removal. METHODS: 154 tattoo removal clients who had attended the private clinic "Centre for Laser Surgery", Hellerup, Denmark from 2001-2013 completed a questionnaire concerning outcome expectations, level of pain experiences and satisfaction with tattoo removal...
January 20, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28107407/sympatry-predicts-spot-pigmentation-patterns-and-female-association-behavior-in-the-livebearing-fish-poeciliopsis-baenschi
#4
Andrea J Roth-Monzón, Laura E Scott, Ashley A Camargo, Eliza I Clark, Eric E Schott, Jerald B Johnson
In this study, we explored the possibility that differences in pigmentation patterns among populations of the fish Poeciliopsis baenschi were associated with the presence or absence of the closely related species P. turneri. If reproductive character displacement is responsible, spotting patterns in these two species should diverge in sympatry, but not allopatry. We predicted that female P. baenschi from sympatric sites should show a preference for associating with conspecifics vs. heterospecific males, but females from allopatric sites should show no such preferences...
2017: PloS One
https://www.readbyqxmd.com/read/28107007/chlorophyll-catalyzed-visible-light-mediated-synthesis-of-tetrahydroquinolines-from-n-n-dimethylanilines-and-maleimides
#5
Jun-Tao Guo, Da-Cheng Yang, Zhi Guan, Yan-Hong He
Natural pigment chlorophyll was used as a green photosensitizer for the first time in a visible light photoredox catalysis for the efficient synthesis of tetrahydroquinolines from N,N-dimethylanilines and maleimides in an air atmosphere. The reaction involves direct cyclization via sp3 C-H bond functionalization process to afford products in moderate to high yields (61-98%) from a wide range of substrates with a low loading of chlorophyll under mild conditions. This work demonstrates the potential benefits of chlorophyll as photosensitizer in visible light catalysis...
January 20, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28106799/rna-editing-adar1-and-the-innate-immune-response
#6
REVIEW
Qingde Wang, Xiaoni Li, Ruofan Qi, Timothy Billiar
RNA editing, particularly A-to-I RNA editing, has been shown to play an essential role in mammalian embryonic development and tissue homeostasis, and is implicated in the pathogenesis of many diseases including skin pigmentation disorder, autoimmune and inflammatory tissue injury, neuron degeneration, and various malignancies. A-to-I RNA editing is carried out by a small group of enzymes, the adenosine deaminase acting on RNAs (ADARs). Only three members of this protein family, ADAR1-3, exist in mammalian cells...
January 18, 2017: Genes
https://www.readbyqxmd.com/read/28106278/caffeine-prevents-blood-retinal-barrier-damage-in-a-model-in-vitro-of-diabetic-macular-edema
#7
Grazia Maugeri, Agata Grazia D'Amico, Daniela Maria Rasà, Valentina La Cognata, Salvatore Saccone, Rita Federico, Sebastiano Cavallaro, Velia D'Agata
Diabetic macular edema (DME) is the major cause of vision loss in patients affected by diabetic retinopathy. Hyperglycemia and hypoxia, represent the key elements in the progression of this pathologies, leading to breakdown of the blood-retinal barrier (BRB). Caffeine, a psychoactive substance largely consumed in the world, is a nonselective antagonist of adenosine receptors (AR) and it possesses a protective effect in various diseases, including eye pathologies. Here, we have investigated the effect of this substance on BRB integrity following exposure to hyperglycemic/hypoxic insult...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28106239/intravitreal-chemotherapy-in-the-management-of-vitreous-disease-in-retinoblastoma
#8
Hayyam Kiratli, İrem Koç, Ali Varan, Canan Akyüz
PURPOSE: To evaluate the therapeutic outcome of intravitreal melphalan injection in the management of vitreous disease in patients with retinoblastoma. We particularly aimed to assess whether higher melphalan dose with lower number of injections was more effective and associated with fewer side effects. METHODS: This retrospective, interventional, noncomparative, and nonrandomized study included 39 eyes of 37 patients. Vitreous seeds were classified as dust, sphere, and cloud types...
January 2, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28106169/inhibition-of-nucks-facilitates-corneal-recovery-following-alkali-burn
#9
Ming-Wai Poon, Dan Jiang, Peng Qin, Yuelin Zhang, Beiying Qiu, Sumit Chanda, Vinay Tergaonkar, Qing Li, Ian Y Wong, Zhendong Yu, Hung-Fat Tse, David S H Wong, Qizhou Lian
Corneal wound healing involves a complex cascade of cytokine-controlled cellular events, including inflammatory and angiogenesis responses that are regulated by transcriptional chromatin remodeling. Nuclear Ubiquitous Casein and cyclin-dependent Kinase Substrate (NUCKS) is a key chromatin modifier and transcriptional regulator of metabolic signaling. In this study, we investigated the role of NUCKS in corneal wound healing by comparing its effects on corneal alkali burn in NUCKS knockout (NKO) and NUCKS wild-type (NWT) mice...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28106049/food-grade-tio2-impairs-intestinal-and-systemic-immune-homeostasis-initiates-preneoplastic-lesions-and-promotes-aberrant-crypt-development-in-the-rat-colon
#10
Sarah Bettini, Elisa Boutet-Robinet, Christel Cartier, Christine Coméra, Eric Gaultier, Jacques Dupuy, Nathalie Naud, Sylviane Taché, Patrick Grysan, Solenn Reguer, Nathalie Thieriet, Matthieu Réfrégiers, Dominique Thiaudière, Jean-Pierre Cravedi, Marie Carrière, Jean-Nicolas Audinot, Fabrice H Pierre, Laurence Guzylack-Piriou, Eric Houdeau
Food-grade titanium dioxide (TiO2) containing a nanoscale particle fraction (TiO2-NPs) is approved as a white pigment (E171 in Europe) in common foodstuffs, including confectionary. There are growing concerns that daily oral TiO2-NP intake is associated with an increased risk of chronic intestinal inflammation and carcinogenesis. In rats orally exposed for one week to E171 at human relevant levels, titanium was detected in the immune cells of Peyer's patches (PP) as observed with the TiO2-NP model NM-105. Dendritic cell frequency increased in PP regardless of the TiO2 treatment, while regulatory T cells involved in dampening inflammatory responses decreased with E171 only, an effect still observed after 100 days of treatment...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105976/early-subretinal-allograft-rejection-is-characterized-by-innate-immune-activity
#11
Kevin P, Toby M, Deborah M, Cliona O Farrelly, David J
<p>Successful subretinal transplantation is limited by considerable early graft loss, despite pharmacological suppression of adaptive immunity. We postulated that early innate immune activity is a dominant factor in determining graft survival and chose a non-immunosuppressed mouse model of retinal pigment epithelial (RPE) cell transplantation to explore this.</p><p>Expression of almost all measured cytokines by DH01 RPE cells increased significantly following graft preparation and the neutrophil chemoattractant, KC/GRO/CINC, was most significantly increased...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105903/criteria-to-define-a-more-relevant-reference-sample-of-titanium-dioxide-in-the-context-of-food-a-multiscale-approach
#12
William Dudefoi, Hélène Terrisse, Mireille Richard-Plouet, Eric Gautron, Florin Popa, Bernard Humbert, Marie-Hélène Ropers
Titanium dioxide (TiO2) is a transition metal oxide widely used as a white pigment in various applications, including food. Due to the classification of TiO2 nanoparticles as potentially harmful for humans by inhalation (IARC, 2006), the presence of nanoparticles in food products needed to be confirmed by a set of independent studies. Seven samples of food grade titanium dioxide (E171) were extensively characterised for their size distribution, crystallinity, and surface properties by the currently recommended methods...
January 20, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28105686/visual-tactile-processing-in-primary-somatosensory-cortex-emerges-before-cross-modal-experience
#13
Malte Bieler, Kay Sieben, Sandra Schildt, Brigitte Röder, Ileana L Hanganu-Opatz
The presumptive unisensory neocortical areas process multisensory information by oscillatory entrainment of neuronal networks via direct cortico-cortical projections. While neonatal unimodal experience has been identified as necessary for setting up the neuronal networks of multisensory processing, it is still unclear whether early cross-modal experience equally controls the ontogeny of multisensory processing. Here, we assess the development of visual-somatosensory interactions and their anatomical substrate by performing extracellular recordings of network activity in primary sensory cortices in vivo and assessing the cortico-cortical connectivity in pigmented rats...
January 20, 2017: Synapse
https://www.readbyqxmd.com/read/28105609/effect-of-zinc-and-copper-nanoparticles-on-drought-resistance-of-wheat-seedlings
#14
Nataliya Taran, Volodymyr Storozhenko, Nataliia Svietlova, Ludmila Batsmanova, Viktor Shvartau, Mariia Kovalenko
The effect of a colloidal solution of Cu,Zn-nanoparticles on pro-oxidative/antioxidative balance and content of photosynthetic pigments and leaf area of winter wheat plants of steppe (Acveduc) and forest-steppe (Stolichna) ecotypes was investigated in drought conditions. It has been shown that Cu,Zn-nanoparticles decreased the negative effect of drought action upon plants of steppe ecotype Acveduc. In particular, increased activity of antioxidative enzymes reduced the level of accumulation of thiobarbituric acid reactive substances (TBARS) and stabilized the content of photosynthetic pigments and increased relative water content in leaves...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28105339/analysis-of-multiple-types-of-human-cells-subsequent-to-bioprinting-with-electrospraying-technology
#15
Yu Xin, Gang Chai, Ting Zhang, Xiangsheng Wang, Miao Qu, Andy Tan, Melia Bogari, Ming Zhu, Li Lin, Qingxi Hu, Yuanyuan Liu, Yan Zhang
The aim of the present study was to investigate bioprinting with electrospraying technology using multiple types of human cell suspensions as bio-ink, in order to lay the initial foundations for the application of the bioprinting technology in tissue engineering. In the current study, six types of human cells were selected and cultured, including human fibroblasts, human adipose-derived stem cells (hADSCs), human periodontal ligament cells (HPDLCs), adult human retinal pigment epithelial cells (ARPE-19), human umbilical vascular endothelial cells (HUVECs) and human gastric epithelial cell line (GES-1)...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28105231/pigment-epithelium-derived-factor-has-a-role-in-the-progression-of-papillary-thyroid-carcinoma-by-affecting-the-hif1%C3%AE-vegf-signaling-pathway
#16
Yichen Lv, Yu Sun, Tiefeng Shi, Chenlei Shi, Huadong Qin, Zhaozhu Li
The progression mechanism of papillary thyroid carcinoma (PTC) remains largely unknown. Accumulating evidence has suggested that various targets of pigment epithelium-derived factor (PEDF) are able to inhibit cancer progression. The aim of the present study was to examine PEDF expression in PTC patients and to investigate its relationship with aggressive clinicopathological features, as well as to explore whether PEDF affects the progression of PTC via the hypoxia-inducible factor 1α (HIF1α)-vascular endothelial growth factor (VEGF) pathway...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105189/chrysin-induces-cell-apoptosis-in-human-uveal-melanoma-cells-via-intrinsic-apoptosis
#17
Chunyan Xue, Yueqin Chen, Dan-Ning Hu, Codrin Iacob, Chengwei Lu, Zhenping Huang
Uveal melanoma is the most common intraocular malignant tumor in adults. Chrysin is a flavonoid present in honey, propolis, various plants and herbs. In the present study, the cytotoxic effects of chrysin were investigated on human uveal melanoma cell lines (M17 and SP6.5) and associated signaling pathways, and a comparison to the effects on normal ocular cells [scleral fibroblasts and retinal pigment epithelial (RPE) cells] was performed. The effects of chrysin on cell viability were assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28104803/microrna-processing-enzymes-are-essential-for-survival-and-function-of-mature-retinal-pigmented-epithelial-cells-in-mice
#18
Thomas R Sundermeier, Sanae Sakami, Bhubanananda Sahu, Scott J Howell, Songqi Gao, Zhiqian Dong, Marcin Golczak, Akiko Maeda, Krzysztof Palczewski
Age-related macular degeneration (AMD) is a major cause of irreversible vision loss. The neovascular or "wet" form of AMD can be treated to a varying degree with anti-angiogenic drugs, but geographic atrophy (GA) is an advanced stage of the more prevalent "dry" form of AMD for which there is no effective treatment. Development of GA has been linked to loss of the microRNA (miRNA)-processing enzyme DICER1 in the mature retinal pigmented epithelium (RPE). This loss results in the accumulation of toxic transcripts of Alu transposable elements which activate the NLRP3 inflammasome and additional downstream pathways that compromise the integrity and function of the RPE...
January 19, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28104650/genome-sequences-of-diverse-human-cytomegalovirus-strains-with-utility-in-drug-screening-and-vaccine-evaluation
#19
Kathleen Corcoran, Carly J Sherrod, Ellen F Perkowski, Jordan Texier, Fengsheng Li, I-Ming Wang, Michael McVoy, Tong-Ming Fu, Dirk P Dittmer
Cytomegalovirus displays genetic heterogeneity, which has implications for antiviral and vaccine development. Many studies have focused on laboratory isolates that have been extensively adapted for growth on fibroblasts. Here, we report whole-genome sequences for 10 human cytomegalovirus (HCMV) strains that readily grow on ARPE-19 human retinal pigment epithelial cells.
January 19, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28104549/mechanisms-of-silver_nanoparticles-induced-hypopigmentation-in-embryonic-zebrafish
#20
Lian Xu, Qin-Han Xu, Xin-Ying Zhou, Li-Yan Yin, Peng-Peng Guan, Ting Zhang, Jing-Xia Liu
Silver_nanoparticles (AgNPs) have been reported to inhibit specification of erythroid cells and to induce spinal cord deformities and cardiac arrhythmia in vertebrates, but have not been implicated in development of neural crest (NC) and pigment cells in an in vivo model yet. In current study, down-regulated expressions of NC genes pax7 and foxd3, melanophore genes mitfa and dct, and xanthophore gene gch2 in AgNPs-exposed embryos were revealed by microarray, qRT-PCR and whole-mount in situ hybridization (WISH)...
January 12, 2017: Aquatic Toxicology
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