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https://www.readbyqxmd.com/read/28315771/evidence-for-two-populations-of-hair-bundles-in-the-sea-anemone-nematostella-vectensis
#1
Shelcie S Menard, Glen M Watson
Cytochalasin D (CD) was employed to disrupt F-actin within stereocilia of anemone hair bundles. CD treatment decreases the abundance of hair bundles (by 85%) while significantly impairing predation. The remaining hair bundles are 'CD-resistant.' Surprisingly, the morphology and F-actin content of resistant hair bundles are comparable to those of untreated controls. However, the resistant hair bundles fail to respond normally to the N-acetylated sugar, NANA, by elongating. Instead, they remain at resting length...
March 16, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28304352/in-vitro-anti-inflammatory-and-cytotoxic-effects-of-aqueous-extracts-from-the-edible-sea-anemones-anemonia-sulcata-and-actinia-equina
#2
Tânia Costa Silva, Paula Branquinho de Andrade, Fátima Paiva-Martins, Patrícia Valentão, David Micael Pereira
Marine invertebrates have been attracting the attention of researchers for their application in nutrition, agriculture, and the pharmaceutical industry, among others. Concerning sea anemones (Cnidaria), little is known regarding their metabolic profiles and potential value as a source of pharmacologically-active agents. In this work, the chemical profiles of two species of sea anemones Actinia equina and Anemonia sulcata, were studied by high-performance liquid chromatography with diode-array detection (HPLC-DAD) and its impact upon immune and gastric cells was evaluated...
March 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28303220/anemone-medicinal-plants-ethnopharmacology-phytochemistry-and-biology
#3
REVIEW
Da-Cheng Hao, Xiaojie Gu, Peigen Xiao
The Ranunculaceae genus Anemone (order Ranunculales), comprising more than 150 species, mostly herbs, has long been used in folk medicine and worldwide ethnomedicine. Various medicinal compounds have been found in Anemone plants, especially triterpenoid saponins, some of which have shown anti-cancer activities. Some Anemone compounds and extracts display immunomodulatory, anti-inflammatory, antioxidant, and antimicrobial activities. More than 50 species have ethnopharmacological uses, which provide clues for modern drug discovery...
March 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28299647/runx-in-invertebrates
#4
S Hughes, A Woollard
Runx genes have been identified in all metazoans and considerable conservation of function observed across a wide range of phyla. Thus, insight gained from studying simple model organisms is invaluable in understanding RUNX biology in higher animals. Consequently, this chapter will focus on the Runx genes in the diploblasts, which includes sea anemones and sponges, as well as the lower triploblasts, including the sea urchin, nematode, planaria and insect. Due to the high degree of functional redundancy amongst vertebrate Runx genes, simpler model organisms with a solo Runx gene, like C...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28287181/a-new-group-of-glycoside-hydrolase-family-13-%C3%AE-amylases-with-an-aberrant-catalytic-triad
#5
Fean D Sarian, Štefan Janeček, Tjaard Pijning, Ihsanawati, Zeily Nurachman, Ocky K Radjasa, Lubbert Dijkhuizen, Dessy Natalia, Marc J E C van der Maarel
α-Amylases are glycoside hydrolase enzymes that act on the α(1→4) glycosidic linkages in glycogen, starch, and related α-glucans, and are ubiquitously present in Nature. Most α-amylases have been classified in glycoside hydrolase family 13 with a typical (β/α)8-barrel containing two aspartic acid and one glutamic acid residue that play an essential role in catalysis. An atypical α-amylase (BmaN1) with only two of the three invariant catalytic residues present was isolated from Bacillus megaterium strain NL3, a bacterial isolate from a sea anemone of Kakaban landlocked marine lake, Derawan Island, Indonesia...
March 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28286876/diversity-as-opportunity-insights-from-600-million-years-of-ahr-evolution
#6
Mark E Hahn, Sibel I Karchner, Rebeka R Merson
The aryl hydrocarbon receptor (AHR) was for many years of interest only to pharmacologists and toxicologists. However, this protein has fundamental roles in biology that are being revealed through studies in diverse animal species. The AHR is an ancient protein. AHR homologs exist in most major groups of modern bilaterian animals, including deuterostomes (chordates, hemichordates, echinoderms) and the two major clades of protostome invertebrates [ecdysozoans (e.g. arthropods and nematodes) and lophotrochozoans (e...
February 2017: Curr Opin Toxicol
https://www.readbyqxmd.com/read/28270243/predation-on-transmission-stages-reduces-parasitism-sea-anemones-consume-transmission-stages-of-a-barnacle-parasite
#7
Caitlin R Fong, Armand M Kuris
While parasites serve as prey, it is unclear how the spatial distribution of parasite predators provides transmission control and influences patterns of parasitism. Because many of its organisms are sessile, the rocky intertidal zone is a valuable but little used system to understand spatial patterns of parasitism and elucidate the underlying mechanisms driving these patterns. Sea anemones and barnacles are important space competitors in the rocky intertidal zone along the Pacific coast of North America. Anemones are voracious, indiscriminate predators; thus, they may intercept infectious stages of parasites before they reach a host...
March 8, 2017: Parasitology
https://www.readbyqxmd.com/read/28258198/novel-adjuvant-based-on-the-pore-forming-protein-sticholysin-ii-encapsulated-into-liposomes-effectively-enhances-the-antigen-specific-ctl-mediated-immune-response
#8
Rady J Laborde, Oraly Sanchez-Ferras, María C Luzardo, Yoelys Cruz-Leal, Audry Fernández, Circe Mesa, Liliana Oliver, Liem Canet, Liane Abreu-Butin, Catarina V Nogueira, Mayra Tejuca, Fabiola Pazos, Carlos Álvarez, María E Alonso, Ieda M Longo-Maugéri, Michael N Starnbach, Darren E Higgins, Luis E Fernández, María E Lanio
Vaccine strategies to enhance CD8(+) CTL responses remain a current challenge because they should overcome the plasmatic and endosomal membranes for favoring exogenous Ag access to the cytosol of APCs. As a way to avoid this hurdle, sticholysin (St) II, a pore-forming protein from the Caribbean Sea anemone Stichodactyla helianthus, was encapsulated with OVA into liposomes (Lp/OVA/StII) to assess their efficacy to induce a CTL response. OVA-specific CD8(+) T cells transferred to mice immunized with Lp/OVA/StII experienced a greater expansion than when the recipients were injected with the vesicles without St, mostly exhibiting a memory phenotype...
March 3, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28250108/the-sphingosine-rheostat-is-involved-in-the-cnidarian-heat-stress-response-but-not-necessarily-in-bleaching
#9
Sheila A Kitchen, Virginia M Weis
Sphingolipids play important roles in mitigating cellular heat and oxidative stress by altering membrane fluidity, receptor clustering and gene expression. Accumulation of signaling sphingolipids that comprise the sphingosine rheostat, pro-apoptotic sphingosine (Sph) and pro-survival sphingosine-1-phosphate (S1P), is key to determining cell fate. Reef-building corals and other symbiotic cnidarians living in shallow tropical waters can experience elevated seawater temperature and high UV irradiance, two stressors that are increasing in frequency and severity with climate change...
February 22, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28243530/a-detailed-observation-of-the-ejection-and-retraction-of-defense-tissue-acontia-in-sea-anemone-exaiptasia-pallida
#10
Julie Lam, Ya-Wen Cheng, Wan-Nan U Chen, Hsing-Hui Li, Chii-Shiarng Chen, Shao-En Peng
Acontia, located in the gastrovascular cavity of anemone, are thread-like tissue containing numerous stinging cells which serve as a unique defense tissue against predators of the immobile acontiarian sea anemone. Although its morphology and biological functions, such as defense and digestion, have been studied, the defense behavior and the specific events of acontia ejection and retraction are unclear. The aim of this study is to observe and record the detailed process of acontia control in anemones. Observations reveal that the anemone, Exaiptasia pallida, possibly controls a network of body muscles and manipulates water pressure in the gastrovascular cavity to eject and retract acontia...
2017: PeerJ
https://www.readbyqxmd.com/read/28228679/a-new-species-of-aspidophryxus-isopoda-dajidae-ectoparasitic-on-mysidella-hoshinoi-mysidae-in-japan
#11
Michitaka Shimomura
A new dajid, Aspidophryxus izuensissp. n., is described from seven females and six males found infesting the dorsal carapaces of specimens of Mysidella hoshinoi Shimomura, 2016 (Mysidae: Mysidellinae) associated with an unidentified species of sea anemone (Haloclavidae) from Izu-Oshima Island, Sagami Sea, central Japan. Aspidophryxus izuensis sp. n. differs from its congeners in having a body length about as long as wide, widest at the anterior part in females; an elongate frontal part of the cephalon, half as long as wide in females; the frontal margin of the cephalon exceeding the anterior margins of lateral lamellae in females; an unsegmented, vermiform, elongate pleon in females; and a uropod composed of a protopod and an inner and outer ramus in males...
2017: ZooKeys
https://www.readbyqxmd.com/read/28228674/towards-a-revision-of-the-genus-periclimenes-resurrection-of-ancylocaris-schenkel-1902-and-designation-of-three-new-genera-crustacea-decapoda-palaemonidae
#12
Zdeněk Ďuriš, Ivona Horká
Based on recently published molecular phylogenies of Indo-West Pacific palaemonid shrimps and further morphological evidence, the systematic position of several species of the polyphyletic genus Periclimenes is revised. The generic name Ancylocaris Schenkel, 1902 is re-established for the anemone-associated Periclimenes brevicarpalis. Actinimenesgen. n., is proposed for the anemone-associated Periclimenes inornatus, Periclimenes ornatellus and Periclimenes ornatus, all of which have a subspatulate first pereiopod...
2017: ZooKeys
https://www.readbyqxmd.com/read/28222763/the-discovery-of-novel-lpmo-families-with-a-new-hidden-markov-model
#13
Gerben P Voshol, Erik Vijgenboom, Peter J Punt
BACKGROUND: Renewable biopolymers, such as cellulose, starch and chitin are highly resistance to enzymatic degradation. Therefore, there is a need to upgrade current degradation processes by including novel enzymes. Lytic polysaccharide mono-oxygenases (LPMOs) can disrupt recalcitrant biopolymers, thereby enhancing hydrolysis by conventional enzymes. However, novel LPMO families are difficult to identify using existing methods. Therefore, we developed a novel profile Hidden Markov model (HMM) and used it to mine genomes of ascomycetous fungi for novel LPMOs...
February 21, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28219642/synergy-of-raddeanin-a-and-cisplatin-induced-therapeutic-effect-enhancement-in-human-hepatocellular-carcinoma
#14
Jian-Nan Li, Ye Yu, Yan-Fei Zhang, Zhi-Meng Li, Guang-Zhi Cai, Ji-Yu Gong
Cisplatin is a main compound for human hepatocellular carcinoma (HCC) chemotherapies, but it has certain cytotoxicity during applications. To release that, combining with other drugs are being as a regular plan in clinic. In our present study, we are focusing on one of active monomers extracted from Anemone Raddeana Regel, Raddeanin A (RA), which is on behalf of the same character like cisplatin in the tumor remedies. In order to investigate whether combination usage of RA and cisplatin can be priority to the later drug's effect development and its toxicity reduction in HCC, both of two drugs were treated 24 h or 48 h in QGY-7703 cells for estimating their abilities in tumor cell proliferation inhibition...
April 1, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28203295/management-of-anaemia-in-oncohaematological-patients-treated-with-biosimilar-epoetin-alfa-results-of-an-italian-observational-retrospective-study
#15
Giovanni Rosti, Mario Petrini, Alberto Bosi, Piero Galieni, Daniele Bernardi, Gianfranco Giglio, Laura Dorotea, Brunangelo Falini, Elvira Scelzi, Enzo Veltri, Roberto Castelli, Chiara Longagnani, Tommaso Raggi, Federico Simonetti
BACKGROUND: Many patients with solid tumours or nonmyeloid haematopoietic tumours develop symptomatic anaemia, which has a major impact on quality of life (QoL). The efficacy of erythropoiesis-stimulating agents (ESAs) in improving QoL and reducing blood transfusions has been widely demonstrated. Binocrit® (biosimilar epoetin alfa) is an ESA indicated in the European Union for treating chemotherapy-induced anaemia. The aim of this study was to investigate the effect of Binocrit® on haemoglobin (Hb) levels in anaemic cancer patients in Italian clinical practice...
January 2017: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/28203041/body-size-and-symbiotic-status-influence-gonad-development-in-aiptasia-pallida-anemones
#16
Judith F Carlisle, Grant K Murphy, Alison M Roark
Pale anemones (Aiptasia pallida) coexist with dinoflagellates (primarily Symbiodinium minutum) in a mutualistic relationship. The purpose of this study was to investigate the role of these symbionts in gonad development of anemone hosts. Symbiotic and aposymbiotic anemones were subjected to light cycles that induced gametogenesis. These anemones were then sampled weekly for nine weeks, and gonad development was analyzed histologically. Anemone size was measured as mean body column diameter, and oocytes or sperm follicles were counted for each anemone...
2017: Symbiosis
https://www.readbyqxmd.com/read/28196786/assessing-the-chronic-toxicity-of-copper-and-aluminium-to-the-tropical-sea-anemone-exaiptasia-pallida
#17
Melanie A Trenfield, Joost W van Dam, Andrew J Harford, David Parry, Claire Streten, Karen Gibb, Rick A van Dam
The world's most productive bauxite mines and alumina refineries are located in tropical or sub-tropical regions. The discharge water from alumina refineries can contain elevated aluminium (Al, <0.45µm fraction), from 30 to 1000μg/L. There is a need for additional information on the toxicity of Al to aquatic organisms to improve the environmental regulation and management of alumina refinery operations in tropical coastal regions. A 14-d chronic toxicity test was developed for the tropical sea anemone Exaiptasia pallida...
February 11, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28194851/inversion-of-the-side-chain-stereochemistry-of-indvidual-thr-or-ile-residues-in-a-protein-molecule-impact-on-the-folding-stability-and-structure-of-the-shk-toxin
#18
Bobo Dang, Rong Shen, Tomoya Kubota, Kalyaneswar Mandal, Francisco Bezanilla, Benoit Roux, Stephen B H Kent
ShK toxin is a cysteine-rich 35-residue protein ion-channel ligand isolated from the sea anemone Stichodactyla helianthus. In this work, we studied the effect of inverting the side chain stereochemistry of individual Thr or Ile residues on the properties of the ShK protein. Molecular dynamics simulations were used to calculate the free energy cost of inverting the side-chain stereochemistry of individual Thr or Ile residues. Guided by the computational results, we used chemical protein synthesis to prepare three ShK polypeptide chain analogues, each containing either an allo-Thr or an allo-Ile residue...
March 13, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28173991/damage-of-eukaryotic-cells-by-the-pore-forming-toxin-sticholysin-ii-consequences-of-the-potassium-efflux
#19
Sheila Cabezas, Sylvia Ho, Uris Ros, María E Lanio, Carlos Alvarez, F Gisou van der Goot
Pore-forming toxins (PFTs) form holes in membranes causing one of the most catastrophic damages to a target cell. Target organisms have evolved a regulated response against PFTs damage including cell membrane repair. This ability of cells strongly depends on the toxin concentration and the properties of the pores. It has been hypothesized that there is an inverse correlation between the size of the pores and the time required to repair the membrane, which has been for long a non-intuitive concept and far to be completely understood...
February 4, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28168117/boxer-crabs-induce-asexual-reproduction-of-their-associated-sea-anemones-by-splitting-and-intraspecific-theft
#20
Yisrael Schnytzer, Yaniv Giman, Ilan Karplus, Yair Achituv
Crabs of the genus Lybia have the remarkable habit of holding a sea anemone in each of their claws. This partnership appears to be obligate, at least on the part of the crab. The present study focuses on Lybia leptochelis from the Red Sea holding anemones of the genus Alicia (family Aliciidae). These anemones have not been found free living, only in association with L. leptochelis. In an attempt to understand how the crabs acquire them, we conducted a series of behavioral experiments and molecular analyses...
2017: PeerJ
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