Browsing Kjemisk institutt by Author "Rise, Frode"

Now showing items 1-20 of 21

  • 44-Methylgambierone, a new gambierone analogue isolated from Gambierdiscus australes 
    Murray, J Sam; Selwood, Andrew I.; Harwood, D Tim; van Ginkel, Roel; Puddick, Jonathan; Rhodes, Lesley L; Rise, Frode; Wilkins, Alistair L. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    A new analogue of gambierone, 44-methylgambierone, was isolated from the benthic dinoflagellate Gambierdiscus australes collected from Raoul Island (Rangitahua/Kermadec Islands). This molecule has been previously reported ...
  • Analysis of total microcystins and nodularins by oxidative cleavage of their ADMAdda, DMAdda, and Adda moieties 
    Foss, Amanda J.; Miles, Christopher O.; Wilkins, Alistair Lawrence; Rise, Frode; Trovik, Kristian Wiedicke; Cieslik, Kamil; Aubel, Mark T. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Microcystins (MCs) and nodularins (NODs) exhibit high structural variability, including modifications of the Adda (3S-amino-9S-methoxy-2S,6,8S-trimethyl-10-phenyldeca-4E,6E-dienoic acid) moiety. Variations include ...
  • Bioactive Metabolites of Marine Origin Have Unusual Effects on Model Membrane Systems 
    Jakubec, Martin; Totland, Christian; Rise, Frode; Chamgordani, Elahe Jafari; Paulsen, Britt; Maes, Louis; Matheeussen, An; Gundersen, Lise-Lotte; Halskau, Øyvind (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Marine sponges and soft corals have yielded novel compounds with antineoplastic and antimicrobial activities. Their mechanisms of action are poorly understood, and in most cases, little relevant experimental evidence is ...
  • Characterization of Inulin-Type Fructan from Platycodon grandiflorus and Study on Its Prebiotic and Immunomodulating Activity 
    Pang, Di-Jiang; Huang, Chao; Chen, Mei-Ling; Chen, Yu-Long; Fu, Yu-Ping; Paulsen, Berit Smestad; Rise, Frode; Zhang, Bing-Zhao; Chen, Zheng-Li; Jia, Ren-Yong; Li, Li-Xia; Song, Xu; Feng, Bin; Ni, Xue-Qin; Yin, Zhong-Qiong; Zou, Yuan-Feng (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Platycodon grandiflorus is a plant widely used in traditional Chinese medicine, of which polysaccharides are reported to be the main components responsible for its bio-functions. In this work, the inulin-type fructan (PGF) ...
  • Identification of 24-O-β-d-Glycosides and 7-Deoxy-Analogues of Okadaic Acid and Dinophysistoxin-1 and -2 in Extracts from Dinophysis Blooms, Dinophysis and Prorocentrum Cultures, and Shellfish in Europe, North America and Australasia 
    Wilkins, Alistair L.; Rundberget, Thomas; Sandvik, Morten; Rise, Frode; Knudsen, Brent K.; Kilcoyne, Jane; Reguera, Beatriz; Rial, Pilar; Wright, Elliot J.; Giddings, Sabrina D.; Boundy, Michael J.; Rafuse, Cheryl; Miles, Christopher O. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Two high-mass polar compounds were observed in aqueous side-fractions from the purification of okadaic acid (1) and dinophysistoxin-2 (2) from Dinophysis blooms in Spain and Norway. These were isolated and shown to be ...
  • In situ cofactor regeneration enables selective CO2 reduction in a stable and efficient enzymatic photoelectrochemical cell 
    Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios; Backe, Paul Hoff; Ruan, Qiushi; Junwang, Tang; Rise, Frode; Bjørås, Magnar; Norby, Truls Eivind (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Mimicking natural photosynthesis by direct photoelectrochemical (PEC) reduction of CO2 to chemicals and fuels requires complex cell assemblies with limitations in selectivity, efficiency, cost, and stability. Here, we ...
  • Isolation, characterisation and complement fixation activity of acidic polysaccharides from Argemone mexicana used as antimalarials in Mali 
    Dénou, Adama; Togola, Adiaratou; Inngjerdingen, Kari Tvete; Moussavi, Nastaran; Rise, Frode; Zou, Yuanfeng; Dafam, Dalen G.; Nep, Elijah I.; Ahmed, Abubakar; Alemika, Taiwo E.; Diallo, Drissa; Sanogo, Rokia; Paulsen, Berit Smestad (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Context Global studies on Argemone mexicana L. (Papaveraceae) traditionally used against malaria in Mali are limited to its low-mass compounds activities, and little information on its bioactive polysaccharides is ...
  • Nucleophilic Addition of Thiols to Deoxynivalenol 
    Stanic, Ana; Uhlig, Silvio; Solhaug, Anita; Rise, Frode; Wilkins, Alistair L.; Miles, Christopher O. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Conjugation of deoxynivalenol (DON) with sulfur compounds is recognized as a significant reaction pathway, and putative DON–glutathione (DON–GSH) conjugates have been reported in planta. To understand and control the ...
  • Polysaccharides from Aconitum carmichaelii leaves: Structure, immunomodulatory and anti-inflammatory activities 
    Fu, Yu-Ping; Li, Cen-Yu; Peng, Xi; Zou, Yuan-Feng; Rise, Frode; Paulsen, Berit Smestad; Wangensteen, Helle; Inngjerdingen, Kari Tvete (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Roots of Aconitum carmichaelii are used in Asian countries due to its content of bioactive alkaloids. In the production of root preparations, tons of leaves are usually discarded, leading to a huge waste of herbal material. ...
  • Quantification of Fatty Acids and their Regioisomeric Distribution in Triacylglycerols from Porcine and Bovine Sources Using 13C NMR Spectroscopy 
    Kildahl-Andersen, Geir; Gjerlaug-Enger, Eli; Rise, Frode; Haug, Anna; Egelandsdal, Bjørg (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The uptake of specific fatty acids in humans is dependent on their position on the glycerol backbone. There is a great interest in methods that can access this information fast and accurately. By way of high‐resolution ...
  • Salvia miltiorrhiza polysaccharide and its related metabolite 5-methoxyindole-3-carboxaldehyde ameliorate experimental colitis by regulating Nrf2/Keap1 signaling pathway 
    Fu, Yu-ping; Peng, Xi; Zhang, Chao-Wen; Jiang, Quan-Xing; Li, Cen-Yu; Paulsen, Berit Smestad; Rise, Frode; Huang, Chao; Feng, Bin; Li, Li-Xia; Chen, Xing-Fu; Jia, Ren-Yong; Li, Yang-Ping; Zhao, Xing-Hong; Ye, Gang; Tang, Hua-Qiao; Liang, Xiao-Xia; Lv, Cheng; Tian, Meng-Liang; Yin, Zhong-Qiong; Zou, Yuanfeng (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2023)
    The roots of Salvia miltiorrhiza have been used in Traditional Chinese Medicine for thousands of years. However, tons of aerial parts of this plant are usually discarded in the production of roots preparation. To make ...
  • Searching for a UV-filter in the eyes of high-flying birds 
    Zawadzka, Malgorzata Elzbieta; Racz, Beatrix; Ambrosini, Dario; Görbitz, Carl Henrik; Morth, Jens Preben; Wilkins, Alistair L.; Østeby, Anja; Elgstøen, Katja B. Prestø; Lundanes, Elsa; Rise, Frode; Ringvold, Amund; Wilson, Steven Ray Haakon (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Abstract The eye lens is a unique organ as no cells can be replaced throughout life. This makes it decisive that the lens is protected against damaging UV-radiation. An ultraviolet (UV)-absorbing compound of unknown identity ...
  • Spherical Micelles with Nonspherical Cores: Effect of Chain Packing on the Micellar Shape 
    König, Nico; Willner, Lutz; Carlström, Göran; Zinn, Thomas; Knudsen, Kenneth Dahl; Rise, Frode; Topgaard, Daniel; Lund, Reidar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Self-assembly of amphiphilic polymers into micelles is an archetypical example of a “self-confined” system due to the formation of micellar cores with dimensions of a few nanometers. In this work, we investigate the chain ...
  • Structural characterization of bioactive heteropolysaccharides from the medicinal fungus Inonotus obliquus (Chaga). 
    Wold, Christian Winther; Kjeldsen, Christian; Corthay, Alexandre; Rise, Frode; Christiansen, Bjørn E.; Duus, Jens Øllgaard; Inngjerdingen, Kari Tvete (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    The aim of this paper was to perform a comprehensive characterization of polysaccharides isolated from the interior (IOI) and exterior (IOE) parts of the fungus Inonotus obliquus. Pre-extraction with DCM and MeOH, followed ...
  • Structural Characterization of Maitotoxins Produced by Toxic Gambierdiscus Species 
    Murray, J. Sam; Finch, Sarah C.; Mudge, Elizabeth M.; Wilkins, Alistair Lawrence; Puddick, Jonathan; Harwood, D. Tim; Rhodes, Lesley L.; van Ginkel, Roel; Rise, Frode; Prinsep, Michèle R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Identifying compounds responsible for the observed toxicity of the Gambierdiscus species is a critical step to ascertaining whether they contribute to ciguatera poisoning. Macroalgae samples were collected during research ...
  • Structural elucidation of novel pro-inflammatory polysaccharides from Daphne mezereum L. 
    Butt, Hussain Shakeel; Ulriksen, Emilie Steinbakk; Rise, Frode; Wangensteen, Helle; Duus, Jens Øllgaard; Inngjerdingen, Marit; Inngjerdingen, Kari Tvete (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    Daphne mezereum L., an important medicinal plant in Scandinavian folk medicine, was used to treat ailments such as diarrhea, swelling and stomach pain. A range of natural compounds have been isolated, but little attention ...
  • Structural features and antioxidant activities of polysaccharides from different parts of Codonopsis pilosula var. modesta (Nannf.) L. T. Shen 
    Li, Li-Xia; Chen, Meng-Si; Zhang, Zi-Yu; Paulsen, Berit Smestad; Rise, Frode; Huang, Chao; Feng, Bin; Chen, Xing-Fu; Jia, Ren-Yong; Ding, Chun-Bang; Feng, Shi-Ling; Li, Yang-Ping; Chen, Yu-Long; Huang, Zhen; Zhao, Xing-Hong; Yin, Zhong-Qiong; Zou, Yuanfeng (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    In this study, three acidic polysaccharides from different plant parts of Codonopsis pilosula var. Modesta (Nannf.) L. T. Shen were obtained by ion exchange chromatography and gel filtration chromatography, and the yields ...
  • The biosynthesis of phospholipids is linked to the cell cycle in a model eukaryote 
    Vitova, Milada; Lanta, Vojtech; Cizkova, Maria; Jakubec, Martin; Rise, Frode; Halskau, Øyvind; Bisova, Katerina; Furse, Samuel Robert (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    The structural challenges faced by eukaryotic cells through the cell cycle are key for understanding cell viability and proliferation. We tested the hypothesis that the biosynthesis of structural lipids is linked to the ...
  • The edible mushroom Albatrellus ovinus contains a α-L-fuco-α-D-galactan, α-D-glucan, a branched (1→6)-β-D-glucan and a branched (1→3)-β-D-glucan 
    Samuelsen, Anne Berit C.; Rise, Frode; Wilkins, Alistair L.; Teveleva, Lioubov; Nyman, Anna Armika Tussilago; Aachmann, Finn Lillelund (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    Albatrellus ovinus, the sheep polypore, is a large, dense mushroom being rich in cell wall material. Polysaccharides were isolated by sequential extraction, enzymatic treatment and analyzed with respect to monosaccharide ...
  • The role of 44-methylgambierone in ciguatera fish poisoning: Acute toxicity, production by marine microalgae and its potential as a biomarker for Gambierdiscus spp 
    Murray, J. Sam; Nishimura, Tomohiro; Finch, Sara J.; Rhodes, Lesley J.; Puddick, Jonathan; Harwood, D. Tim; Larsson, Michaela E.; Doblin, Martina A.; Leung, Pricilla; Yan, Meng; Rise, Frode; Wilkins, Alistair Lawrence; Princep, Michele R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Ciguatera fish poisoning (CFP) is prevalent around the tropical and sub-tropical latitudes of the world and impacts many Pacific island communities intrinsically linked to the reef system for sustenance and trade. While ...