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Glaucia Resende Soares, Carolina Foot Gomes de Moura, Marcelo Jose Dias Silva, Wagner Vilegas, Aline Boveto Santamarina, Luciana Pellegrini Pisani, Debora Estadella, Daniel Araki Ribeiro
The aim of this study was to evaluate the chemopreventive potential of purple carrot extract following rat tongue carcinogenesis induced by 4-nitroquinoline 1-oxide (4NQO). For this purpose, histopathological analysis, proliferative status, antioxidant activity and inflammatory status were investigated in this setting. A total of 20 male rats were distributed into four groups as follows (n = 5 per group): Group 1-free access to water and commercial diet for 12 weeks; Group 2-received 4NQO at 50 ppm dose in drinking water daily and commercial diet for 12 weeks; Group 3-free access to water and received diet supplemented with purple carrot extract (0...
March 15, 2018: Medical Oncology
Elizabeth A MacDonald, Eric Donovan, Yukitoshi Nishimura, Nathan A Case, D Megan Gillies, Bea Gallardo-Lacourt, William E Archer, Emma L Spanswick, Notanee Bourassa, Martin Connors, Matthew Heavner, Brian Jackel, Burcu Kosar, David J Knudsen, Chris Ratzlaff, Ian Schofield
A glowing ribbon of purple light running east-west in the night sky has recently been observed by citizen scientists. This narrow, subauroral, visible structure, distinct from the traditional auroral oval, was largely undocumented in the scientific literature and little was known about its formation. Amateur photo sequences showed colors distinctly different from common types of aurora and occasionally indicated magnetic field-aligned substructures. Observations from the Swarm satellite as it crossed the arc have revealed an unusual level of electron temperature enhancement and density depletion, along with a strong westward ion flow, indicating that a pronounced subauroral ion drift (SAID) is associated with this structure...
March 2018: Science Advances
Ankita Jagannath Lakade, Kothandapani Sundar, Prathapkumar H Shetty
A new approach was developed for a simple and easy colorimetric detection assay to detect the use of calcium carbide in artificial ripening of fruits. Residues of arsenic on the fruit surface were used as an indicator for this. Use of calcium carbide in artificial ripening has been banned in many countries including India. In the present study, we have used a gold nanoparticle-based colorimetric detection method for determination of artificial ripening of fruits. ICP-MS analysis showed the presence of higher amounts of arsenic on fruits ripened using calcium carbide...
March 15, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
Nanako Kanno, Katsumi Matsuura, Shin Haruta
Purple photosynthetic bacteria utilize light energy for growth. We previously demonstrated that light energy contributed to prolonging the survival of multiple purple bacteria under carbon-starved conditions. In order to clarify the effects of illumination on metabolic states under carbon-starved, non-growing conditions, we herein compared the metabolic profiles of starved cells in the light and dark using the purple bacterium, Rhodopseudomonas palustris. The metabolic profiles of starved cells in the light were markedly different from those in the dark...
March 13, 2018: Microbes and Environments
Hee Kyoung Joo, Sunga Choi, Yu Ran Lee, Eun Ok Lee, Myoung Soo Park, Kyu Been Park, Cuk-Seong Kim, Yong Pyo Lim, Jong-Tae Park, Byeong Hwa Jeon
Anthocyanins, the most prevalent flavonoids in red/purple fruits and vegetables, are known to improve immune responses and reduce chronic disease risks. In this study, the anti-inflammatory activities of an anthocyanin-rich extract from red Chinese cabbage (ArCC) were shown based on its inhibitory effects in cultured endothelial cells and hyperlipidemic apolipoprotein E -deficient mice. ArCC treatment suppressed monocyte adhesion to tumor necrosis factor-α-stimulated endothelial cells. This was validated by ArCC's ability to downregulate the expression and transcription of endothelial adhesion molecules, determined by immunoblot and luciferase promoter assays, respectively...
March 12, 2018: International Journal of Molecular Sciences
Daniel Montemayor, Eva Rivera, Seogjoo J Jang
Light harvesting 2 (LH2) complex is a primary component of the photosynthetic unit of purple bacteria that is responsible for harvesting and relaying excitons. The electronic absorption line shape of LH2 contains two major bands at 800 nm and 850 nm wavelength regions. Under low light condition, some species of purple bacteria replace LH2 with LH3, a variant form with almost the same structure as the former but with distinctively different spectral features. The major difference between the absorption line shapes of LH2 and LH3 is the shift of the 850 nm band of the former to a new 820 nm region...
March 13, 2018: Journal of Physical Chemistry. B
Alexandra Yannoutsos, Julie Malloizel-Delaunay, Emilie Tournier, Abdelaziz Abid, Alessandra Bura-Rivière
In this observation, we report an unusual presentation of a pilomatricoma in an 8-year-old girl who was initially referred to the department of vascular medicine for diagnosis and care of a suspected mixed lymphatic venous malformation. The lesion on her left shoulder presented as a giant bluish-purple red solitary mass, painful and rapidly growing, measuring 7 cm in anteroposterior diameter. This mass did not present the typical characteristics of a lymphatic venous malformation but exhibited warning signs of malignancy on clinical examination and imaging...
February 27, 2018: American Journal of Dermatopathology
Hyemin Kim, Nagahiro Saito
MnO2 -carbon hybrid (MnO2 -C-PBz) was simultaneously synthesized by a one-step solution plasma process (SPP) using a single precursor referred to as "purple benzene", which was derived from the K+ (dicyclohexano-18-crown-6 ether) complex. To clarify the synergistic effects on the cationic dye removal, MnO2 -free carbon and carbon-free MnO2 samples were concurrently investigated. The results of adsorption for cationic dyes (methylene blue (MB) and rhodamine B (Rh B)) and anionic dye (methyl orange (MO)) revealed remarkably high affinity for cationic dyes...
March 12, 2018: Scientific Reports
Muhe Diao, Jef Huisman, Gerard Muyzer
Sulfate-reducing bacteria (SRB) and sulfur-oxidizing bacteria (SOB) drive major transformations in the sulfur cycle, and play vital roles in oxic-anoxic transitions in lakes and coastal waters. However, information on the succession of these sulfur bacteria in seasonally stratified lakes using molecular biological techniques is scarce. Here, we used 16S rRNA gene amplicon sequencing to study the spatio-temporal dynamics of sulfur bacteria during oxic-anoxic regime shifts in Lake Vechten. Oxygen and sulfate were mixed throughout the water column in winter and early spring...
March 8, 2018: FEMS Microbiology Ecology
Kakharman Yesmembetov, Natalya Satlikova, Zhanat Spatayev, Kulpash Kaliaskarova
We present a 21-year-old patient, remarkable for huge hepatomegaly with the liver, occupying almost the entire abdominal cavity, and mild portal hypertension due to splenic vein compression. After ultrasonography-guided liver biopsy, performed to establish the diagnosis, the patient had bleeding from the liver. Fortunately, emergency laparotomy was started immediately, and the patient was saved. Macroscopically, the liver appeared to be of purple-red color, flabby to the touch, and able to be easily wrinkled with fingers...
March 2018: Experimental and Clinical Transplantation
Minhui He, Qiong Hu, Yaqi Mei, Baojing Zhou, Jinming Kong, Xueji Zhang
The ability to directly detect alkaline phosphatase (ALP) activity in undiluted serum samples is of great importance for clinical diagnosis. In this work, we report the use of the distinctive metal-to-ligand charge-transfer (MLCT) absorption properties of the Cu(BCA)2 + (BCA = bicinchoninic acid) reporter for the visual detection of ALP activity. In the presence of ALP, the substrate ascorbic acid 2-phosphate (AAP) can be enzymatically hydrolyzed to release ascorbic acid (AA), which in turn reduces Cu2+ to Cu+ ...
2018: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
Sydney Moser, Ingrid Aragon, Amber Furrer, Jan-Willem Van Klinken, Melissa Kaczmarczyk, Byung-Hoo Lee, Judy George, Bruce R Hamaker, Richard Mattes, Mario G Ferruzzi
Beneficial effects of some phenolic compounds in modulation of carbohydrate digestion and glycemic response have been reported, however effects of phenolics from processed potato products on these endpoints are not well known. The aims of this study were to characterize phenolic profiles of fresh potatoes (purple, red, or white fleshed; 2 varieties each) and chips, and to examine the potential for potato phenolic extracts (PPE) to modulate starch digestion and intestinal glucose transport in model systems. Following in vitro assessment, a pilot clinical study (n=11) assessed differences in glycemic response and gastric emptying between chips from pigmented and white potatoes...
February 12, 2018: Nutrition Research
Sandra M Londoño-Restrepo, Natalia Rincón-Londoño, Margarita Contreras-Padilla, Beatriz M Millan-Malo, Mario E Rodriguez-Garcia
This work is focused on the chemical, structural, morphological, thermal, IR vibrational, and pasting characterization of isolated white, yellow, and purple Arracacha starches from Colombia. Inductive couple plasma showed that these starches are rich in potassium. Scanning Electron Microscopy (SEM) images show that the starch granules are formed by ovoid fully filled Lego-like starch microparticles, the circular cross-section has a diameter between 9 and 15 μm and mayor axis between 20 and 30 μm. Each one of these ovoids is formed by irregular wedge-shaped 6 to 10 isolated starch granules with an average size between 4 and 12 μm...
March 6, 2018: International Journal of Biological Macromolecules
Mengqiang Chen, Mengyun Xu, Yao Xiao, Dandan Cui, Yongqiang Qin, Jiaqi Wu, Wenyi Wang, Guoping Wang
Anthocyanins are the main pigments in flowers and fruits. These pigments are responsible for the red, red-purple, violet, and purple color in plants, and act as insect and animal attractants. In this study, phenotypic analysis of the purple flower color in eggplant indicated that the flower color is controlled by a single dominant gene, FAS . Using an F₂ mapping population derived from a cross between purple-flowered 'Blacknite' and white-flowered 'Small Round', Flower Anthocyanidin Synthase ( FAS ) was fine mapped to an approximately 165...
March 9, 2018: International Journal of Molecular Sciences
Ganiyu Oboh, Adedayo O Ademiluyi, Odunayo M Agunloye, Ayokunle Olubode Ademosun, Bolaji Grace Ogunsakin
Spices are used in soup preparation in many homes and serve as ingredients in the preparation of several traditional delicacies endowed with natural antioxidants such as polyphenols. The aim of this study is to evaluate the effect of aqueous extract of garlic, white onion, and purple onion on angiotensin-converting enzyme, α-amylase, and α-glucosidase activity in vitro and determine their antioxidant properties via various antioxidant assays such as OH* , Fe2+ chelation, and 2, 2'-azino-bis 3-ethylbenzothiazoline-6-sulphonic acid (ABTS) radical-scavenging assays...
March 9, 2018: Journal of Dietary Supplements
Fang Wang, Yu Xiu Dong, Xiao Zhen Tang, Tian Li Tu, Bin Zhao, Na Sui, Daolin Fu, Xian Sheng Zhang
To study mechanism of anthocyanin biosynthesis regulation, we examined light-regulated gene expression involved in anthocyanin biosynthesis in purple grain of wheat. Ten kinds of anthocyanins were identified from a purple-grain wheat cultivar by HPLC ESI-MS/MS analysis. The libraries constructed from total RNA of purple grain under light (L) or dark (D) conditions for 15 and 20 days were sequenced. In total, 1,874 differentially expressed genes (DEGs) in L20 vs. L15, 1,432 DEGs in D20 vs. D15, 862 DEGs in D15 vs...
March 9, 2018: Journal of Agricultural and Food Chemistry
Kai Feng, Zhi-Sheng Xu, Jie-Xia Liu, Jing-Wen Li, Feng Wang, Ai-Sheng Xiong
This study showed that a galactosyltransferase, AgUCGalT1, is involved in anthocyanin galactosylation in purple celery. Celery is a well-known vegetable because of its rich nutrients, low calories, and medicinal values. Its petioles and leaf blades are the main organs acting as nutrient sources. UDP-galactose: cyanidin 3-O-galactosyltransferase can transfer the galactosyl moiety from UDP-galactose to the 3-O-position of cyanidin through glycosylation. This process enhances the stability and water solubility of anthocyanins...
March 8, 2018: Planta
Tinkara Mastnak, Aleksandra Lobnik, Gerhard J Mohr, Matejka Turel
The synthesis of two new azobenzene dyes, namely CR-528 and CR-555, and their spectral properties in ethanol solution are described. The recognition of sulfur-containing analytes (2-mercaptoethanol (2-ME), sodium hydrosulfide (NaHS)), and biogenic amines (spermine, spermidine, ethanolamine) bestowed significant spectral changes with color changes from pink/purple to pale yellow/orange-yellow. The nitro acceptor group in the dicyanovinyl reactive dye contributes to higher sensitivity and lower detected analyte concentrations...
March 8, 2018: Sensors
Kotaro Hara, Takao Someya, Katsura Sano, Yoshimasa Sagane, Toshihiro Watanabe, R G S Wijesekara
This article describes free radical-scavenging activities of extracts of several plants harvested in Sri Lanka through the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. These plants have traditionally been used in the indigenous systems of medicine in Sri Lanka, such as Ayurveda, as described below. (English name, "local name in Sri Lanka," (scientific name)). bougainvillea plant, "bouganvilla," ( Bougainvillea grabla ), purple fruited pea eggplant,"welthibbatu," ( Solanum trilobatum ) [1], country borage plant, "kapparawalliya," ( Plectranthus amboinicus ) [2], malabar nut plant, "adhatoda," ( Justicia adhatoda ) [3], long pepper plant,"thippili," ( Piper longum ) [4], holy basil plant, "maduruthala," ( Ocimum tenuiflorum ) [5], air plant, "akkapana," ( Kalanchoe pinnata ) [6], plumed cockscomb plant, "kiri-henda," ( Celosia argentea ) [7], neem plant,"kohomba," ( Azadirachta indica ) [8], balipoovu plant, "polpala," ( Aerva lanata ) [9], balloon-vine plant, "wel penera," ( Cardiospermum halicacabum ) [10], emblic myrobalan plant, "nelli," ( Phyllanthus emblica ) [11], indian copperleaf plant, "kuppameniya," ( Acalypha indica ) [12], spreading hogweed plant, "pita sudu sarana," ( Boerhavia diffusa ) [13], curry leaf plant, "karapincha," ( Murraya koenigii ) [14], indian pennywort plant, "gotukola," ( Centera asiatica ) [15], jewish plum plant, "ambarella,"( Spondias dulcis ) [16]...
April 2018: Data in Brief
Gopala, Ekta Khasa, Ashutosh Rao, Madhupriya, G P Rao
Nine vegetable plants species exhibiting phytoplasma suspected symptoms of white/purple leaf, little leaf, flat stem, witches' broom, phyllody and leaf yellowing were observed in experimental fields at Indian Agricultural Research Institute, New Delhi from December 2015 to July 2016. Total DNA extracted from the three healthy and three symptomatic leaves of all the nine vegetables were subjected to PCR assays using phytoplasma specific primers P1/P7 followed by R16F2n/R16R2 and 3Far/3Rev to amplify the 16S rDNA fragments...
March 2018: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
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