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Eric F Bernstein, Jayant Bhawalkar, Kevin T Schomacker
BACKGROUND: Green, blue, and purple tattoo pigments are often the colors most resistant to laser removal. Recently, the first ever production picosecond-domain laser with a 785 nm wavelength was developed to improve the rate of clearance of green, blue, and purple tattoo inks. METHODS: Twenty-two tattoos from 15 subjects with skin phototypes II-IV were enrolled in the study. A total of four treatments were administered using a single 785 nm picosecond-domain laser wavelength...
May 20, 2018: Lasers in Surgery and Medicine
Keisuke Kawashima, Hiroshi Ishikita
We report redox potentials ( E m ) for one-electron reduction for all chlorophylls in the two electron-transfer branches of water-oxidizing enzyme photosystem II (PSII), photosystem I (PSI), and purple bacterial photosynthetic reaction centers (PbRC). In PSI, E m values for the accessory chlorophylls were similar in both electron-transfer branches. In PbRC, the corresponding E m value was 170 mV less negative in the active L-branch (BL ) than in the inactive M-branch (BM ), favoring BL ˙- formation. This contrasted with the corresponding chlorophylls, ChlD1 and ChlD2 , in PSII, where E m (ChlD1 ) was 120 mV more negative than E m (ChlD2 ), implying that to rationalize electron transfer in the D1-branch, ChlD1 would need to serve as the primary electron donor...
May 7, 2018: Chemical Science
M Duque Alcorta, P Chanca Alvarez, R Nuñez Cabetas, Mj Alcaide Martín, M Valero, C Gómez Candela
The global health community has recognized the role of food and nutrition in health maintenance and disease prevention. Undernutrition is an important problem in clinical circles but it is still not highly considered by specialists. It is well known the consequences of undernutrition on the immunological systems. Furthermore, the main consequences are an increase of morbidity-mortality rates, postoperative complications, length of stay and number of hospital early readmissions. These are all reasons to lead to increase health-care financial costs...
June 2018: Clinical Nutrition ESPEN
Thomas Simler, Sylvie Choua, Andreas A Danopoulos, Pierre Braunstein
The double aminolysis reaction of [Co{N(SiMe3)2}2] by the salt 1-(6-((dicyclohexylphosphaneyl)methyl)pyridin-2-yl)-3-(2,6-diisopropylphenyl)-1H-imidazol-3-ium bromide, which contains one phosphane, one pyridine and one imidazolium groups, of formula [o-Cy2PCH2(C5H3N)(o-C3H3N2DiPP)]Br and abbreviated as (CyPNpyrCim)Br, was previously shown to afford the Co(ii) complex [Co(CyP*NaCNHC)Br] (1) containing a dearomatised picolyl moiety in the tridentate, anionic donor ligand CyP*NaCNHC (Na = anionic amido, P* = vinylic P donor)...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Samuel M Luedin, Joël F Pothier, Francesco Danza, Nicola Storelli, Niels-Ulrik Frigaard, Matthias Wittwer, Mauro Tonolla
" Thiodictyon syntrophicum" sp. nov. strain Cad16T is a photoautotrophic purple sulfur bacterium belonging to the family of Chromatiaceae in the class of Gammaproteobacteria . The type strain Cad16T was isolated from the chemocline of the alpine meromictic Lake Cadagno in Switzerland. Strain Cad16T represents a key species within this sulfur-driven bacterial ecosystem with respect to carbon fixation. The 7.74-Mbp genome of strain Cad16T has been sequenced and annotated. It encodes 6237 predicted protein sequences and 59 RNA sequences...
2018: Standards in Genomic Sciences
Qingqing Sun, Jinyu Li, Wenzhen Cheng, Huihong Guo, Xiaomin Liu, Hongbo Gao
Purple acid phosphatases (PAPs) play various physiological roles in plants. AtPAP2 was previously shown to localize to both chloroplasts and mitochondria and to modulate carbon metabolism in Arabidopsis . Over-expression of AtPAP2 resulted in faster growth and increased biomass in several plant species, indicating its great potential for crop improvement of phosphate use and yield. Here, we studied the localization of AtPAP2 by transient expression in tobacco leaves. The results showed AtPAP2 was localized to the plasma membrane through the secretory pathway, which is different from previous studies...
May 17, 2018: Genes
Yoshitaka Saga, Keiya Hirota, Sayaka Matsui, Hitoshi Asakawa, Hiroshi Ishikita, Keisuke Saito
The selective removal of B800 bacteriochlorophyll (BChl) a from light-harvesting complex 2 (LH2) in purple photosynthetic bacteria is a clue about elucidation of the mechanism for the transfer of energy from these pigments to B850 BChl a and their roles in the LH2 protein structure. We demonstrated that the kinetics of the removal of B800 BChl a from two representative LH2 proteins derived from Phaeospirillum molischianum and Rhodoblastus acidophilus differed significantly, in contrast to the calculated binding enthalpy...
May 17, 2018: Biochemistry
Michael Eichenberger, Anders Hansson, David Fischer, Lara Dürr, Michael Naesby
Anthocyanins (ACNs) are plant secondary metabolites responsible for most of the red, purple and blue colors of flowers, fruits and vegetables. They are increasingly used in the food and beverage industry as natural alternative to artificial colorants. Production of these compounds by fermentation of microorganisms would provide an attractive alternative. In this study, Saccharomyces cerevisiae was engineered for de novo production of the three basic anthocyanins, as well as the three main trans-flavan-3-ols...
June 1, 2018: FEMS Yeast Research
Ayan Kusari, Jessica Sprague, Lawrence F Eichenfield, Catalina Matiz, Victoria R Barrio
Primary cutaneous aspergillosis is a rare but potentially life-threatening disease. We present the case of a premature infant who developed primary cutaneous aspergillosis with Aspergillus niger at the site of a skin abrasion that had been treated with a purple-colored cyanoacrylate product. The infection was treated successfully with gentle debridement of the cyanoacrylate product, followed by intravenous voriconazole and topical fluconazole. To our knowledge, this is the first reported case of primary cutaneous aspergillosis occurring at the site of cyanoacrylate-based skin adhesive...
May 15, 2018: Pediatric Dermatology
Qingling Liu, Li Li, Yan Zhao, Zhengbo Chen
The authors describe a colorimetric method for the determination of DNA based on the deaggregation of gold nanoparticles (AuNPs) induced by exonuclease III (Exo III). DNA amplification is accomplished by Exo III to generate large quantities of the residual DNA. Residual DNA tethers onto the surfaces of AuNPs which prevents their aggregation. Hence, the color of the solution is red. However, in the absence of DNA, salt-induced aggregation is not prevented, and the bluish-purple color of the aggregated AuNPs is observed...
May 15, 2018: Mikrochimica Acta
Turibius Simon, Muthaiah Shellaiah, Perpectual Steffi, Kien Wen Sun, Fu-Hsiang Ko
New glutamic acid (Glu) and polyethylenimine (PE) functionalized ultra-stable gold nanoparticles (PE-Glu-AuNPs) were developed via a simple NaBH4 reduction method. The low toxicity and biocompatibility of PE-Glu-AuNPs were confirmed via an MTT assay in Raw 264.7 cells. Excitingly, PE-Glu-AuNPs were found to be extremely stable at room temperature up to six months and were utilized in an effective colorimetric naked eye assay of clenbuterol (CLB) and ractopamine (RCT) at pH 5. It was found that the selective assay of CLB and RCT is not affected by any other interferences (such as alanine, phenylalanine, NaCl, CaCl2 , threonine, cysteine, glycine, glucose, urea and salbutamol)...
September 6, 2018: Analytica Chimica Acta
D Rodríguez-Morales, V Rico-Gray, J G García-Franco, H Ajuria-Ibarra, L T Hernández-Salazar, L E Robledo-Ospina, D Rao
Many animals use body coloration as a strategy to communicate with conspecifics, prey, and predators. Color is a trade-off for some species, since they should be visible to conspecifics but cryptic to predators and prey. Some flower-dwelling predators, such as crab spiders, are capable of choosing the color of flowers where they ambush flower visitors and pollinators. In order to avoid being captured, visitors evaluate flowers visually before landing. The crab spider Mecaphesa dubia is a polymorphic species (white/purple color morphs), which inhabits the flower heads of a dune plant, Palafoxia lindenii...
May 12, 2018: Die Naturwissenschaften
Louise Hock, Annika Gillis, Jacques Mahillon
Bacteriophage Deep-Purple, isolated from an agricultural soil in Belgium, lyses the emetic Bacillus weihenstephanensis strain LH002 and exhibits a lytic activity against 55% of emetic Bacillus cereus and B. weihenstephanensis strains. Deep-Purple is able to complete its lytic cycle within 45 min and is stable to a large range of pHs and temperatures below 60 °C. It possesses an icosahedral head of about 63 nm in diameter and a non-contractile tail of approximately 165 nm in length. The genome of this newly classifiable Siphoviridae family member is 36,278 bp long, with a G+C content of 38...
May 11, 2018: Archives of Virology
Wei-Lin Li, Hong-Yuan Yu, Xian-Jun Zhang, Mang Ke, Tao Hong
Bladder cancer (BC) is the most common malignant disease. The developing of economically sustainable and available agents for the treatment of BC is required. Purple sweet potato anthocyanin (PSPA) has been shown to have antitumor abilities. The present study aimed to evaluate the potential role of PSPA in BC treatment. CCK-8 assay was used to assess the viability of BC cells. Flow cytometry assays were performed to evaluate the mitochondrial membrane potential (MMP), cell apoptosis and cell-cycle distribution...
May 8, 2018: Oncology Reports
Bryan P Traynor, Eoghan Pomeroy, Dorothy Niall
Purple urine bag syndrome (PUBS) is a rare and striking manifestation associated with urinary tract infection involving bright purple discoloration of the lining and tubing of a urinary catheter bag. We present the interesting case of a 90-year-old female patient who developed PUBS and include a review of the relevant literature to date. Uniquely, in this case, PUBS acts as an important clinical sign in supporting the diagnosis of urinary tract infection in a high-risk patient.
November 2017: Oxford Medical Case Reports
Frank H Quina, Erick L Bastos
An overview is provided of the status of research at the frontiers of investigation of the chemistry and photochemistry of two classes of natural plant pigments, the anthocyanins and the betalains, as well as of the pyranoanthocyanin pigments formed from anthocyanins during the maturation of red wine. Together, anthocyanins and betalains are responsible for almost all of the red, purple and blue colors of fruits and flowers and anthocyanins and pyranoanthocyanins are major contributors to the color of red wines...
2018: Anais da Academia Brasileira de Ciências
Shuqin Chen, Zhaosheng Chu, Yunqiao Zhou, Qifeng Li, Tieyu Wang
Because of the unstable hydrodynamic conditions in the wild, the endangered aquatic plant should be cultivated first in constructed wetlands for the protection and expansion of germplasm resources. Ottelia acuminata (Gagnep.) Dandy has become extinct in Erhai Lake, Yunnan province, China. In order to optimize substrates for this species to artificial cultivation, the native substrate (sandy soils) and the other three representative ones (red paddy soils, alluvial paddy soils, and purple paddy soils) collected from Erhai lakeside were applied to cultivate O...
May 8, 2018: Environmental Science and Pollution Research International
Weiwei Zhao, Hua Wang, Yilin Wang
Dynamic covalent surfactants have been prepared from a mixture of 4-formyl-N,N,N-trimethylbenzenaminium iodide (FBA) with heptylamine (C7A) or octylamine (C8A) in alkaline aqueous solutions. The reversible pH-dependent nature of the imine bond is characterized by 1H NMR and fluorescence analysis. The dynamic covalent surfactants self-assemble into micelles under alkaline conditions and exhibit coacervation with 10% hydrolyzed polyacrylamide (PAM) over a wide concentration range. The coacervate phase with a network structure was found to effectively extract the anionic dye Conge Red (CR)...
May 9, 2018: Soft Matter
Hayoung Song, Hankuil Yi, Myungjin Lee, Ching-Tack Han, Jeongyeo Lee, HyeRan Kim, Jong-In Park, Ill-Sup Nou, Sun-Ju Kim, Yoonkang Hur
BACKGROUND: Water-soluble anthocyanin pigments are important ingredients in health-improving supplements and valuable for the food industry. Although great attention has been paid to the breeding and production of crops containing high levels of anthocyanin, genetic variation in red or purple cabbages (Brassica oleracea var. capitata F. rubra) has not yet been characterized at the molecular level. In this study, we identified the mechanism responsible for the establishment of purple color in cabbages...
May 8, 2018: BMC Plant Biology
Hung-Yen Chou, Cheng Man Lun, L Courtney Smith
The purple sea urchin, Strongylocentrotus purpuratus, has a complex and robust immune system that is mediated by a number of multi-gene families including the SpTransformer (SpTrf) gene family (formerly Sp185/333). In response to immune challenge from bacteria and various pathogen-associated molecular patterns, the SpTrf genes are up-regulated in sea urchin phagocytes and express a diverse array of SpTrf proteins. We show here that SpTrf proteins from coelomocytes and isolated by nickel affinity (cNi-SpTrf) bind to Gram-positive and Gram-negative bacteria and to Baker's yeast, Saccharomyces cerevisiae, with saturable kinetics and specificity...
2018: PloS One
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