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https://www.readbyqxmd.com/read/29234052/direct-evidence-of-an-efficient-energy-transfer-pathway-from-jellyfish-carcasses-to-a-commercially-important-deep-water-species
#1
Kathy M Dunlop, Daniel O B Jones, Andrew K Sweetman
Here we provide empirical evidence of the presence of an energetic pathway between jellyfish and a commercially important invertebrate species. Evidence of scavenging on jellyfish carcasses by the Norway lobster (Nephrops norvegicus) was captured during two deployments of an underwater camera system to 250-287 m depth in Sognefjorden, western Norway. The camera system was baited with two Periphylla periphylla (Scyphozoa) carcasses to simulate the transport of jellyfish detritus to the seafloor, hereby known as jelly-falls...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29217831/the-public-health-impact-of-a-new-simple-practical-technique-for-collection-and-transfer-of-toxic-jellyfish-specimens-and-for-nematocyst-identification
#2
Lakkana Thaikruea, Sineenart Santidherakul
Our team aimed to create a new, simple, and inexpensive technique for collecting and transferring of toxic jellyfish specimens and for nematocysts identification. We collected tentacles of Chironex spp., Morbakka spp., and Physalia spp., and transferred them from the beaches by standard and by 'vacuum sticky tape' (VST) techniques. For the VST technique, our team placed the sticky tape on a tentacle and then folded it over to seal the tentacle in the equivalent of a vacuum. We kept the VST in room temperature...
December 7, 2017: Journal of Public Health Policy
https://www.readbyqxmd.com/read/29185520/gut-like-ectodermal-tissue-in-a-sea-anemone-challenges-germ-layer-homology
#3
Patrick R H Steinmetz, Andy Aman, Johanna E M Kraus, Ulrich Technau
Cnidarians (for example, sea anemones and jellyfish) develop from an outer ectodermal and inner endodermal germ layer, whereas bilaterians (for example, vertebrates and flies) additionally have a mesodermal layer as intermediate germ layer. Currently, cnidarian endoderm (that is, 'mesendoderm') is considered homologous to both bilaterian endoderm and mesoderm. Here we test this hypothesis by studying the fate of germ layers, the localization of gut cell types, and the expression of numerous 'endodermal' and 'mesodermal' transcription factor orthologues in the anthozoan sea anemone Nematostella vectensis...
October 2017: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/29175280/surfing-as-a-risk-factor-for-sensitization-to-poly-%C3%AE-glutamic-acid-in-fermented-soybeans-natto-allergy
#4
Naoko Inomata, Mami Miyakawa, Michiko Aihara
BACKGROUND: Poly(γ-glutamic acid) (PGA) is an allergen in natto, fermented soybeans, which causes late-onset anaphylaxis. We hypothesized that jellyfish stings sensitize adults to PGA because a surfer had allergies to both natto and jellyfish, whose sting contains PGA. The aim of the study was to identify behavioral factors, such as marine sports, associated with PGA sensitization. METHODS: Outpatients diagnosed with food allergies based on relevant clinical history, positive skin test and/or food challenge test answered a questionnaire during a regular visit in 2016...
November 24, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/29161751/the-jellyfish-sign-a-new-sonographic-cervical-marker-to%C3%A2-predict-maternal-morbidity-in-abnormally-invasive-placenta-previa
#5
Emma Bertucci, Filomena Giulia Sileo, Giovanni Grandi, Valentina Fenu, Carlotta Cani, Luciano Mancini, Ema Mataca, Fabio Facchinetti
Purpose To investigate the value of a new cervical sonographic sign, called the jellyfish sign (JS), for predicting the risk of maternal morbidity in cases of abnormally invasive placenta (AIP) previa totalis. Materials and Methods Retrospective evaluation of transvaginal (TV) and transabdominal (TA) scans performed in all singleton pregnancies with placenta previa totalis. JS, i. e. the absence of the normal linear demarcation between the placenta previa and the cervix, was evaluated by TV scans. The presence/severity of AIP and outcomes of maternal morbidity were related to this sign...
November 21, 2017: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/29095885/concurrent-jellyfish-blooms-and-tenacibaculosis-outbreaks-in-northern-norwegian-atlantic-salmon-salmo-salar-farms
#6
Sverre Bang Småge, Øyvind Jakobsen Brevik, Kathleen Frisch, Kuninori Watanabe, Henrik Duesund, Are Nylund
Tenacibaculosis is an increasing problem in the Norwegian Atlantic salmon aquaculture industry causing significant economic losses. In September 2015, two separate outbreaks of suspected tenacibaculosis occurred at two Atlantic salmon farms in Finnmark County in Northern Norway. The events resulted in major losses of smolts newly transferred into seawater. Prior to, and during the outbreaks, large numbers of small jellyfish, identified as Dipleurosoma typicum (Boeck) were observed in the vicinity of the farms and inside the net-pens...
2017: PloS One
https://www.readbyqxmd.com/read/29054522/antimicrobial-activity-of-a-newly-identified-kazal-type-serine-proteinase-inhibitor-cckpi1-from-the-jellyfish-cyanea-capillata
#7
Yonghong Zhou, Guoyan Liu, Xi Cheng, Qianqian Wang, Bo Wang, Beilei Wang, Hui Zhang, Qian He, Liming Zhang
In this study, we reported a jellyfish-derived Kazal-type serine protease inhibitor, named CcKPI1, from Cyanea capillata. CcKPI1 has a calculated molecular mass of 19.02kDa and contains three typical Kazal domains. Soluble recombinant CcKPI1 (rCcKPI1) was successfully expressed and purified. rCcKPI1 exhibited significant inhibitory activities against elastase, subtilisin A and proteinase K, but not against trypsin or chymotrypsin. Kinetic studies showed that all of the inhibitory effects of rCcKPI1 were competitive, indicating that it may be a microbial serine protease inhibitor and can exhibit antimicrobial activity...
October 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29043109/multigene-phylogeny-of-the-scyphozoan-jellyfish-family-pelagiidae-reveals-that-the-common-u-s-atlantic-sea-nettle-comprises-two-distinct-species-chrysaora-quinquecirrha-and-c-chesapeakei
#8
Keith M Bayha, Allen G Collins, Patrick M Gaffney
BACKGROUND: Species of the scyphozoan family Pelagiidae (e.g., Pelagia noctiluca, Chrysaora quinquecirrha) are well-known for impacting fisheries, aquaculture, and tourism, especially for the painful sting they can inflict on swimmers. However, historical taxonomic uncertainty at the genus (e.g., new genus Mawia) and species levels hinders progress in studying their biology and evolutionary adaptations that make them nuisance species, as well as ability to understand and/or mitigate their ecological and economic impacts...
2017: PeerJ
https://www.readbyqxmd.com/read/29037949/antibacterial-activities-of-viriditoxin-congeners-and-synthetic-analogues-against-fish-pathogens
#9
Tae Hwan Noh, Liu Sen, Jongki Hong, Joon-Hee Lee, Hyung Ryong Moon, Jee H Jung
Viriditoxin is a fungal secondary metabolite of the fungus Paecilomyces variotii derived from the inner tissues of the giant jellyfish Nemopilema nomurai. Viriditoxin exhibits antibacterial activity against Streptococcus iniae and Streptococcus parauberis, which are major pathogens of aqua cultured fish. Viriditoxin induced abnormal cell morphologies in the fish pathogens S. iniae and S. parauberis, presumably by inhibiting FtsZ polymerization as was previously observed in Escherichia coli. Synthetic analogues of viriditoxin, designed based on docking simulation results to FtsZ of Staphylococcus aureus, were prepared and compared with viriditoxin for antibacterial activity...
November 15, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29017039/sleep-origins-restful-jellyfish-are-sleeping-jellyfish
#10
John A Lesku, Linh M T Ly
What is the 'simplest' animal that sleeps? When did sleep first evolve? Do all animals sleep? Tantalizing hints to answers come from new research showing that jellyfish, one of the earliest evolving groups of animals, have a sleep-like restful state.
October 9, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28975784/dual-mode-electronic-skin-with-integrated-tactile-sensing-and-visualized-injury-warning
#11
Yanli Zhang, Yunsheng Fang, Jia Li, Qihao Zhou, Yongjun Xiao, Kui Zhang, Beibei Luo, Jun Zhou, Bin Hu
Mimicking the pressure-sensing behavior of biological skins using electronic devices has profound implications for prosthetics and medicine. The developed electronic skins based on single response mode for pressure sensing suffer from a rapid decrease in sensitivity with the increase of pressure. Their highly sensitive range covers a narrow part of tolerable pressure range of the human skin and has a weak response to the injurious high pressures. Herein, inspired by a bioluminescent jellyfish, we develop an electronic skin with dual-mode response characteristics, which is able to quantify and map the static and dynamic pressures by combining electrical and optical responses...
October 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28951742/guided-bone-regeneration-using-collagen-scaffolds-growth-factors-and-periodontal-ligament-stem-cells-for-treatment-of-peri-implant-bone-defects-in-vivo
#12
Peer W Kämmerer, Malte Scholz, Maria Baudisch, Jan Liese, Katharina Wegner, Bernhard Frerich, Hermann Lang
INTRODUCTION: The aim of the study was an evaluation of different approaches for guided bone regeneration (GBR) of peri-implant defects in an in vivo animal model. MATERIALS AND METHODS: In minipigs (n = 15), peri-implant defects around calcium phosphate- (CaP-; n = 46) coated implants were created and randomly filled with (1) blank, (2) collagen/hydroxylapatite/β-tricalcium phosphate scaffold (CHT), (3) CHT + growth factor cocktail (GFC), (4) jellyfish collagen matrix, (5) jellyfish collagen matrix + GFC, (6) collagen powder, and (7) collagen powder + periodontal ligament stem cells (PDLSC)...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28943083/the-jellyfish-cassiopea-exhibits-a-sleep-like-state
#13
Ravi D Nath, Claire N Bedbrook, Michael J Abrams, Ty Basinger, Justin S Bois, David A Prober, Paul W Sternberg, Viviana Gradinaru, Lea Goentoro
Do all animals sleep? Sleep has been observed in many vertebrates, and there is a growing body of evidence for sleep-like states in arthropods and nematodes [1-5]. Here we show that sleep is also present in Cnidaria [6-8], an earlier-branching metazoan lineage. Cnidaria and Ctenophora are the first metazoan phyla to evolve tissue-level organization and differentiated cell types, such as neurons and muscle [9-15]. In Cnidaria, neurons are organized into a non-centralized radially symmetric nerve net [11, 13, 15-17] that nevertheless shares fundamental properties with the vertebrate nervous system: action potentials, synaptic transmission, neuropeptides, and neurotransmitters [15-20]...
October 9, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28930834/allergic-shock-caused-by-ingestion-of-cooked-jellyfish-a-case-report
#14
Zhixing Li, Xungang Tan, Botao Yu, Renliang Zhao
RATIONALE: Although anaphylaxis caused by jellyfish stings is common in coastal areas, an allergic shock caused by cooked jellyfish ingestion has never been reported in China. In this paper, we report a case of allergic shock being caused by ingestion of cooked salt-preserved jellyfish shortly after being stung by a live jellyfish. PATIENT CONCERNS: A 26-year-old Chinese man presented with dizziness, pruritus, dyspnea, hypotension, and tachycardia after eating cooked salted jellyfish...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28910729/tio2-particles-in-seafood-and-surimi-products-attention-should-be-paid-to-their-exposure-and-uptake-through-foods
#15
Chunyang Yin, Weilu Zhao, Rui Liu, Rong Liu, Zhe Wang, Lingyan Zhu, Wei Chen, Sijin Liu
The sustainable development of nanotechnology requires a thorough understanding of the life cycle of synthesized nanomaterials, including environmental release, deposition, exposure, and potential health risks. Titanium dioxide (TiO2) materials containing nanosized TiO2 (nTiO2) are commonly used as food additives. Thus, dietary intake through foods is the most important route for the exposure of TiO2 materials. Given the toxic effects of nTiO2 on the gastrointestinal tract and other tissues, it is imperative to investigate their sources and concentrations in popular foods...
August 31, 2017: Chemosphere
https://www.readbyqxmd.com/read/28869962/mimicking-biological-stress-strain-behaviour-with-synthetic-elastomers
#16
Mohammad Vatankhah-Varnosfaderani, William F M Daniel, Matthew H Everhart, Ashish A Pandya, Heyi Liang, Krzysztof Matyjaszewski, Andrey V Dobrynin, Sergei S Sheiko
Despite the versatility of synthetic chemistry, certain combinations of mechanical softness, strength, and toughness can be difficult to achieve in a single material. These combinations are, however, commonplace in biological tissues, and are therefore needed for applications such as medical implants, tissue engineering, soft robotics, and wearable electronics. Present materials synthesis strategies are predominantly Edisonian, involving the empirical mixing of assorted monomers, crosslinking schemes, and occluded swelling agents, but this approach yields limited property control...
September 4, 2017: Nature
https://www.readbyqxmd.com/read/28828853/activation-of-actuating-hydrogels-with-ws2-nanosheets-for-biomimetic-cellular-structures-and-steerable-prompt-deformation
#17
Lu Zong, Xiankai Li, Xiangsheng Han, Lili Lv, Mingjie Li, Jun You, Xiaochen Wu, Chaoxu Li
Macroscopic soft actuation is intrinsic to living organisms in nature, including slow deformation (e.g., contraction, bending, twisting, and curling) of plants motivated by microscopic swelling and shrinking of cells, and rapid motion of animals (e.g., deformation of jellyfish) motivated by cooperative nanoscale movement of motor proteins. These actuation behaviors, with an exceptional combination of tunable speed and programmable deformation direction, inspire us to design artificial soft actuators for broad applications in artificial muscles, nanofabrication, chemical valves, microlenses, soft robotics, etc...
September 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28827642/functional-and-proteomic-analysis-of-ceratonova-shasta-cnidaria-myxozoa-polar-capsules-reveals-adaptations-to-parasitism
#18
Gadi Piriatinskiy, Stephen D Atkinson, Sinwook Park, David Morgenstern, Vera Brekhman, Gilad Yossifon, Jerri L Bartholomew, Tamar Lotan
Myxozoa is a diverse, speciose group of microscopic parasites, recently placed within the phylum Cnidaria. Myxozoans are highly reduced in size and complexity relative to free-living cnidarians, yet they have retained specialized organelles known as polar capsules, akin to the nematocyst stinging capsules of free-living species. Whereas in free-living cnidarians the stinging capsules are used for prey capture or defense, in myxozoans they have the essential function of initiating the host infection process...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28816245/ram-pressure-feeding-of-supermassive-black-holes
#19
Bianca M Poggianti, Yara L Jaffé, Alessia Moretti, Marco Gullieuszik, Mario Radovich, Stephanie Tonnesen, Jacopo Fritz, Daniela Bettoni, Benedetta Vulcani, Giovanni Fasano, Callum Bellhouse, George Hau, Alessandro Omizzolo
When a supermassive black hole at the centre of a galaxy accretes matter, it gives rise to a highly energetic phenomenon: an active galactic nucleus. Numerous physical processes have been proposed to account for the funnelling of gas towards the galactic centre to feed the black hole. There are also several physical processes that can remove gas from a galaxy, one of which is ram-pressure stripping by the hot gas that fills the space between galaxies in galaxy clusters. Here we report that six out of a sample of seven 'jellyfish' galaxies-galaxies with long 'tentacles' of material that extend for dozens of kiloparsecs beyond the galactic disks-host an active nucleus, and two of them also have galactic-scale ionization cones...
August 16, 2017: Nature
https://www.readbyqxmd.com/read/28814953/in-vitro-characterization-of-jellyfish-venom-fibrin-ogen-olytic-enzymes-from-nemopilema-nomurai
#20
Seong Kyeong Bae, Hyunkyoung Lee, Yunwi Heo, Min Jung Pyo, Indu Choudhary, Chang Hoon Han, Won Duk Yoon, Changkeun Kang, Euikyung Kim
BACKGROUND: Because jellyfish are capable of provoking envenomation in humans, they are considered hazardous organisms. Although the effects of their toxins are a matter of concern, information on the venom components, biological activity and pathological mechanisms are still scarce. Therefore, the aim of the present study was to investigate a serine protease component of Nemopilema nomurai jellyfish venom (NnV) and unveil its characteristics. METHODS: To determine the relationship between fibrinolytic activity of NnV and the serine protease, fibrin zymography was performed using metalloprotease and serine protease inhibitors...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
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