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https://www.readbyqxmd.com/read/28823136/identification-of-polymorphisms-in-mitf-and-dct-genes-and-their-associations-with-plumage-colors-in-asian-duck-breeds
#1
Hasina Sultana, Dongwon Seo, Nu-Ri Choi, Md Shamsul Alam Bhuiyan, Seung Hwan Lee, Kang Nyeong Heo, Jun Heon Lee
Objective: The aim of this study was to investigate the effect of single nucleotide polymorphisms (SNPs) of the MITF and DCT genes on plumage coloration in Asian native duck breeds. MITF encodes a protein for microphthalmia-associated transcription factor, which regulates the development and function of melanocytes for pigmentation of skin, hair, and eyes. Among the tyrosinase-related family genes, dopachrome tautomerase (DCT) is a pigment cell-specific gene that plays important roles in the melanin synthesis pathway and the expression of skin, feather, and retina color...
August 16, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28823125/the-importance-of-post-thaw-subculture-for-standardizing-cellular-activity-of-fresh-or-cryopreserved-mouse-embryonic-stem-cells
#2
Dong Woo Ko, Jung Ki Yoon, Jong Il Ahn, Myungook Lee, Woo Sub Yang, Ji Yeon Ahn, Jeong Mook Lim
Objective: Much difference in cellular activity was detected between early and late subpassaged embryonic stem cell (ESCs) lines, which can be created by subtle changes in cell manipulation protocol. This study was subsequently examined whether post-thaw subculture of early subpassaged ESC lines could further affect their cellular activity, which results can contribute to standardizing ESC manipulation protocol for minimizing batch difference or data fluctuation. Methods: Fresh (as a control treatment) or cryopreserved F1 hybrid (B6CBAF1) early ESC lines (C57BL/6xCBA) of the 4 (P4) or the 19 passage (P19) were subcultured once, twice or six times under the same condition...
August 16, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28823107/fluorescent-labeling-of-protein-using-blue-emitting-8-amino-bodipy-derivatives
#3
Dokyoung Kim, Donghee Ma, Muwoong Kim, Yuna Jung, Na Hee Kim, Chiho Lee, Seo Won Cho, Sungnam Park, Youngbuhm Huh, Junyang Jung, Kyo Han Ahn
8-Amino-BODIPY (boron-dipyrromethane) dyes show bright blue fluorescence. Disclosed here are synthesis and characterization of the photophysical properties of a series of functionalized 8-Amino-BODIPY (BP1-4) for protein labeling. The compact structure and solvent-insensitive absorption property of the dye are desirable features for protein labeling. For the model protein, bovine serum albumin (BSA), the labeling proceeds under mild condition via amide bond formation or thiol-ene conjugation with maintaining the bright blue fluorescence...
August 19, 2017: Journal of Fluorescence
https://www.readbyqxmd.com/read/28823078/sesquiterpenes-from-fruits-of-torilis-japonica-with-inhibitory-activity-on-melanin-synthesis-in-b16-cells
#4
Da Hye Song, Yang Hee Jo, Jong Hoon Ahn, Seon Beom Kim, Cheong-Yong Yun, Youngsoo Kim, Bang Yeon Hwang, Mi Kyeong Lee
Melanin, a dark macromolecular pigment, protects skin from harmful damage. However, abnormal accumulation is responsible for hyperpigmentation disorders. Melanogenesis inhibitors have therefore become important constituents in cosmetic products for depigmentation. Torilis japonica Decandolle (Umbelliferae) is a biennial plant which is distributed in East Asia. Fruits of this plant have been used for the treatment of skin disease and inflammation. In our previous study, torilin, a major sesquiterpene of T. japonica, showed an inhibitory effect on melanin production in α-melanocyte stimulating hormone (α-MSH)-activated B16 melanoma cells...
August 19, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/28823054/recent-advances-in-synthetic-lipopeptides-as-anti-microbial-agents-designs-and-synthetic-approaches
#5
REVIEW
Jun-Jie Koh, Shuimu Lin, Roger W Beuerman, Shouping Liu
Infectious diseases impose serious public health burdens and continue to be a global public health crisis. The treatment of infections caused by multidrug-resistant pathogens is challenging because only a few viable therapeutic options are clinically available. The emergence and risk of drug-resistant superbugs and the dearth of new classes of antibiotics have drawn increasing awareness that we may return to the pre-antibiotic era. To date, lipopeptides have been received considerable attention because of the following properties: They exhibit potent antimicrobial activities against a broad spectrum of pathogens, rapid bactericidal activity and have a different antimicrobial action compared with most of the conventional antibiotics used today and very slow development of drug resistance tendency...
August 19, 2017: Amino Acids
https://www.readbyqxmd.com/read/28823016/de-novo-synthesis-of-linoleic-acid-in-multiple-collembola-species
#6
Miriama Malcicka, Joachim Ruther, Jacintha Ellers
Many ecological interactions in communities take place between consumers and the organisms they feed on. Continuous surplus of specific nutritional compounds in the diet may lead to evolutionary changes in the metabolic capacity of the consumer, leaving the biosynthesis of such compounds prone to genetic decay and render organisms auxotrophic. A nutrient that is essential to many organisms is the unsaturated fatty acid, linoleic acid (LA; 18:2n-6), which is important in the maintenance of cell membrane fluidity and as a precursor for signaling molecules...
August 19, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28822994/glucagon-like-peptide-1-receptor-agonist-stimulates-mitochondrial-bioenergetics-in-human-adipocytes
#7
Joanna Góralska, Agnieszka Śliwa, Anna Gruca, Urszula Raźny, Monika Chojnacka, Anna Polus, Bogdan Solnica, Małgorzata Malczewska-Malec
Glucagon-like peptide 1 receptor agonists (GLP-1RAs) are relatively new pharmacological agents used to normalize glucose level in type 2 diabetes. Recently, GLP-1RAs have been approved for the treatment of obesity to reduce body weight in non-diabetic patients. The extra-pancre-atic effects of GLP-1RAs, as well as their molecular mechanism of action, are still poorly understood. Thus this study was aimed to verify the hypothesis that the mechanism of action of the GLP-1RAs involves mitochondria and that GLP-1RAs administration can improve mitochondrial functions...
August 19, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28822967/temporal-dynamics-of-cardiac-hypertrophic-growth-in-response-to-pressure-overload
#8
Yuan Wang, Yuannyu Zhang, Guanqiao Ding, Herman May, Jian Xu, Thomas G Gillette, Hang Wang, Zhao V Wang
Hypertension is one of the most important risk factors of heart failure. In response to high blood pressure, the left ventricle manifests hypertrophic growth to ameliorate wall stress, which may progress into decompensation and trigger pathological cardiac remodeling. Despite the clinical importance, the temporal dynamics of pathological cardiac growth remains elusive. Here, we took advantage of the puromycin labeling approach to measure the relative rates of protein synthesis as a way to delineate the temporal regulation of cardiac hypertrophic growth...
August 19, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28822960/loss-of-perilipin-2-in-cultured-myotubes-enhances-lipolysis-and-redirects-the-metabolic-energy-balance-from-glucose-oxidation-towards-fatty-acid-oxidation
#9
Yuan Z Feng, Jenny Lund, Yuchuan Li, Irlin K Knabenes, Siril S Bakke, Eili Tranheim Kase, Yun K Lee, Alan R Kimmel, G Hege Thoresen, Arild Christian Rustan, Knut Tomas Dalen
Lipid droplet (LD) coating proteins are essential for the formation and stability of intracellular LDs. Plin2 is an abundant LD coating protein in skeletal muscle, but its importance for muscle function is unclear. We show that myotubes established from Plin2-/- mice contain reduced content of LDs and accumulate less oleic acid in triacylglycerol (TAG), due to elevated LD hydrolysis compared to Plin2+/+ myotubes. The reduced ability to store TAG in LDs in Plin2-/- myotubes is accompanied by a shift in energy metabolism...
August 19, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28822915/immunomodulatory-effects-of-m2000-%C3%AE-d-mannuronic-acid-on-tnf-%C3%AE-il-17-and-foxp3-gene-expression-in-patients-with-inflammatory-bowel-disease
#10
Hussaini Alhassan Mohammed, Ali Akbar Saboor-Yaraghi, Homayoun Vahedi, Mir Saeed Yekaninejad, Ghodratollah Panahi, Gholamreza Hemmasi, Mostafa Lakzaei, Abbas Mirshafiey
INTRODUCTION: Inflammatory bowel diseases (IBD) are immune-mediated disorders that result from an aberrant immunological response to the gut luminal antigen in genetically susceptible patients. IBD is categorized into two serotype, Crohn's diseases (CD) and ulcerative colitis (UC), both subtype are important cause of gastrointestinal diseases. The increasing rate of hospitalization, with the high economic burden experienced by the IBD patients, calls for more concerted research efforts to design a potent and affordable treatment option for the treatment of IBD...
August 17, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28822868/preliminary-profiling-of-microrna-in-the-normal-and-regenerating-liver-of-chiloscyllium-plagiosum
#11
Dandan Cheng, Yanna Chen, Conger Lu, Yuezhong Qian, Zhengbing Lv
Liver is a vital organ present in animals for detoxification, protein synthesis, digestion and other functions and its powerful regenerative capacity is well known. C. plagiosum is an abundant fish that is representative of the cartilaginous class in the southeast coastal region of China and its liver accounts for >70% of the fish's visceral weight and contains many bioactive substances. MicroRNAs (microRNAs) play important roles in a wide range of biological processes in eukaryotes, including cell proliferation, differentiation, apoptosis...
July 27, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/28822806/pericardial-adipose-and-aromatase-a-new-translational-target-for-aging-obesity-and-arrhythmogenesis
#12
Gabriel B Bernasochi, Wah Chin Boon, Claire L Curl, Upasna Varma, Salvatore Pepe, Marianne Tare, Laura J Parry, Evdokia Dimitriadis, Stephen B Harrap, Chrishan J Nalliah, Jonathan M Kalman, Lea M D Delbridge, James R Bell
A correlation exists between the extent of pericardial adipose and atrial fibrillation (AF) risk, though the underlying mechanisms remain unclear. Selected adipose depots express high levels of aromatase, capable of converting androgens to estrogens - no studies have investigated aromatase occurrence/expression regulation in pericardial adipose. The Women's Health Initiative reported that estrogen-only therapy in women elevated AF incidence, indicating augmented estrogenic influence may exacerbate cardiac vulnerability...
August 16, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28822768/functional-dissection-and-transport-mechanism-of-magnesium-in-plants
#13
REVIEW
Zhi Chang Chen, Wen Ting Peng, Jian Li, Hong Liao
Magnesium (Mg) is the second most abundant cation in plants, and, as such, is involved in numerous physiological and biochemical processes, including photosynthesis, enzyme activation, and synthesis of nucleic acids and proteins. Due to its relatively small ionic radius and large hydrated radius, Mg binds weakly to soil and root surfaces, and thereby is easily leached from soil. Mg deficiency not only affects crop productivity and quality, but also contributes to numerous chronic human diseases. Therefore, Mg nutrition in plants is an important issue in nutrition and food security...
August 16, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28822564/regenerative-endodontic-treatment-or-mineral-trioxide-aggregate-apical-plug-in-teeth-with-necrotic-pulps-and-open-apices-a-systematic-review-and-meta-analysis
#14
REVIEW
Mahmoud Torabinejad, Ali Nosrat, Prashant Verma, Oyoyo Udochukwu
INTRODUCTION: A mineral trioxide aggregate (MTA) apical plug (MAP) and regenerative endodontic treatment (RET) have shown acceptable clinical outcomes. However, comparative studies are scarce. The aims of this study were to examine the level of evidence for both treatments, conduct a systematic review of the literature on MAP and RET, and run a meta-analysis on the survival and success rates of teeth treated with these procedures. METHODS: Electronic searches were performed in MEDLINE, Web of Science, and the Cochrane Library...
August 16, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28822553/vitamin-d-status-in-growing-dairy-goats-and-sheep-influence-of-ultraviolet-b-radiation-on-bone-metabolism-and-calcium-homeostasis
#15
M V Nemeth, M R Wilkens, A Liesegang
The aim of this study was to investigate how controlled UVB irradiation in combination with reduced nutritional vitamin D (vitD) supply affects vitD status and Ca metabolism of growing goats and sheep. The hypothesis was that, like dairy cows, goats and sheep are able to compensate for the missing nutritional supply of vitD through endogenous production in the skin, with the consequence of a high vitD status and a balanced Ca homeostasis. Sixteen lambs and 14 goat kids aged 3 and a half months were housed in an UVB free environment and fed hay and a vitD-free concentrate over a period of 13 wk...
August 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28822293/synthesis-of-hexagonal-mesoporous-mgal-ldh-nanoplatelets-adsorbent-for-the-effective-adsorption-of-brilliant-yellow
#16
Reza Pourfaraj, Seyed Jamilaldin Fatemi, Sayed Yahya Kazemi, Pourya Biparva
Hexagonal mesoporous MgAl layered double hydroxide (LDH) was synthesized through a simple hydrothermal method and was employed without calcination as adsorbent in the removal of the direct anionic azo dye, Brilliant Yellow (BY). The adsorbent was characterized by XRD, FT-IR, SEM and BET surface area. Hexagonal platelets of MgAl LDH were fabricated with nanometric building blocks. Batch experiments were carried out for study effects of contact time, amount of adsorbent, solution pH and solution temperature on the removal efficiency of BY...
July 29, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28822281/an-integrative-study-to-identify-novel-scaffolds-for-sphingosine-kinase-1-inhibitors
#17
Marcela Vettorazzi, Emilio Angelina, Santiago Lima, Tomas Gonec, Jan Otevrel, Pavlina Marvanova, Tereza Padrtova, Petr Mokry, Pavel Bobal, Lina M Acosta, Alirio Palma, Justo Cobo, Janette Bobalova, Jozef Csollei, Ivan Malik, Sergio Alvarez, Sarah Spiegel, Josef Jampilek, Ricardo D Enriz
Sphingosine kinase 1 (SphK1), the enzyme that produces the bioactive sphingolipid metabolite, sphingosine-1-phosphate, is a promising new molecular target for therapeutic intervention in cancer and inflammatory diseases. In view of its importance, the main objective of this work was to find new and more potent inhibitors for this enzyme possessing different structural scaffolds than those of the known inhibitors. Our theoretical and experimental study has allowed us to identify two new structural scaffolds (three new compounds), which could be used as starting structures for the design and then the development of new inhibitors of SphK1...
August 10, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28822279/chemical-synthesis-of-guanosine-diphosphate-mannuronic-acid-gdp-mana-and-its-c-4-o-methyl-and-c-4-deoxy-congeners
#18
Qingju Zhang, P Lynne Howell, Herman S Overkleeft, Dmitri V Filippov, Gijsbert A van der Marel, Jeroen D C Codée
Described is the first synthesis of guanosine diphosphate mannuronic acid (GDP-ManA), the sugar donor used by algae and bacteria for the production of alginate, an anionic polysaccharide composed of β-d-mannuronic acid (ManA) and α-l-guluronic acid (GulA). Understanding the biosynthesis of these polyanionic polysaccharides on the molecular level, opens up avenues to use and modulate the biosynthesis machinery for biotechnological and therapeutic applications. The synthesis reported here delivers multi-milligram amounts of the GDP-ManA donor that can be used to study the polymerase (Alg8 in Pseudomonas aeruginosa) that generates the poly-ManA chain...
August 11, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28822278/a-carbon-tetrachloride-free-synthesis-of-n-phenyltrifluoroacetimidoyl-chloride
#19
Dylan G M Smith, Spencer J Williams
N-Phenyltrifluoroacetimidoyl chloride (PTFAI-Cl) is a reagent widely used for the preparation of glycosyl N-phenyltrifluoroacetimidates. However, the most commonly applied method requires carbon tetrachloride, a hepatotoxic reagent that has been phased out under the Montreal Protocol. We report a new synthesis of N-phenyltrifluoroacetimidoyl chloride (PTFAI-Cl) using dichlorotriphenylphosphane and triethylamine.
August 10, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28822236/synthesis-structural-studies-and-biological-activity-of-novel-cu-ii-complexes-with-thiourea-derivatives-of-4-azatricyclo-5-2-1-0-2-6-dec-8-ene-3-5-dione
#20
Aleksandra Drzewiecka-Antonik, Paweł Rejmak, Marcin T Klepka, Anna Wolska, Piotr Pietrzyk, Karolina Stępień, Giuseppina Sanna, Marta Struga
The new Cu(II) complexes of 1/2/3-(bromophenyl)-3-(1,7,8,9-tetramethyl-3,5-dioxo-4-azatricyclo[5.2.1.0(2,6)]dec-8-en-4-yl)thiourea derivatives have been synthesized. The spectroscopic studies together with density functional theory calculations of Cu(II) complexes revealed that two parent ligands coordinate to the copper cation in bidentate fashion via thiocarbonyl S and deprotonated N atoms forming rarely observed four-membered chelate ring, with nearly planar [CuN2S2] moiety. In solid state, the mononuclear complex is formed for thiourea derivative with 3-bromophenyl, whereas for Cu(II) connection with 2- and 4-bromophenyl-thioureas the formation of dinuclear complexes is observed, the latter formed by the stacking of mononuclear complexes...
August 9, 2017: Journal of Inorganic Biochemistry
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