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Sepia officinalis

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https://www.readbyqxmd.com/read/28510430/nanoarchitecturing-of-natural-melanin-nanospheres-by-layer-by-layer-assembly-macroscale-anti-inflammatory-conductive-coatings-with-optoelectronic-tunability
#1
Taesik Eom, Kyungbae Woo, Whirang Cho, Jaeeun Heo, Daseul Jang, Jae In Shin, David Charles Martin, Jeong Jae Wie, Bong Sup Shim
Natural melanins are biocompatible conductors with versatile functionalities. Here, we report fabrication of multifunctional poly(vinyl alcohol)/melanin nanocomposites by layer-by-layer (LBL) assembly using melanin nanoparticles (MNPs) directly extracted from sepia officinalis inks. The LBL assembly offers facile manipulation of nanotextures as well as nm-thickness control of the macroscale film by varying solvent qualities. The time-resolved absorption was monitored during the process and quantitatively studied by fractal dimension and lacunarity analysis...
May 16, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28396639/going-up-or-sideways-perception-of-space-and-obstacles-negotiating-by-cuttlefish
#2
Gabriella Scatà, Anne-Sophie Darmaillacq, Ludovic Dickel, Steve McCusker, Nadav Shashar
While octopuses are mostly benthic animals, and squid prefer the open waters, cuttlefish present a special intermediate stage. Although their body structure resembles that of a squid, in many cases their behavior is mostly benthic. To test cuttlefish's preference in the use of space, we trained juvenile Sepia gibba and Sepia officinalis cuttlefish to reach a shelter at the opposite side of a tank. Afterwards, rock barriers were placed between the starting point and the shelter. In one experiment, direct paths were available both through the sand and over the rocks...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28378762/offshore-exposure-experiments-on-cuttlefish-indicate-received-sound-pressure-and-particle-motion-levels-associated-with-acoustic-trauma
#3
Marta Solé, Peter Sigray, Marc Lenoir, Mike van der Schaar, Emilia Lalander, Michel André
Recent findings on cephalopods in laboratory conditions showed that exposure to artificial noise had a direct consequence on the statocyst, sensory organs, which are responsible for their equilibrium and movements in the water column. The question remained about the contribution of the consequent near-field particle motion influence from the tank walls, to the triggering of the trauma. Offshore noise controlled exposure experiments (CEE) on common cuttlefish (Sepia officinalis), were conducted at three different depths and distances from the source and particle motion and sound pressure measurements were performed at each location...
April 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28253300/the-pax-gene-family-highlights-from-cephalopods
#4
Sandra Navet, Auxane Buresi, Sébastien Baratte, Aude Andouche, Laure Bonnaud-Ponticelli, Yann Bassaglia
Pax genes play important roles in Metazoan development. Their evolution has been extensively studied but Lophotrochozoa are usually omitted. We addressed the question of Pax paralog diversity in Lophotrochozoa by a thorough review of available databases. The existence of six Pax families (Pax1/9, Pax2/5/8, Pax3/7, Pax4/6, Paxβ, PoxNeuro) was confirmed and the lophotrochozoan Paxβ subfamily was further characterized. Contrary to the pattern reported in chordates, the Pax2/5/8 family is devoid of homeodomain in Lophotrochozoa...
2017: PloS One
https://www.readbyqxmd.com/read/28247274/metal-accumulations-in-different-tissues-of-cuttlefish-sepia-officinalis-l-1758-in-the-eastern-mediterranean-coasts-of-turkey
#5
Önder Duysak, Erkan Uğurlu
In this study, metal concentration levels (Cd, Co, Cr, Ni, and Pb) were investigated in the gill, hepatopancreas, ovary, testis, and mantle of the male and female cuttlefish Sepia officinalis in various stations (Iskenderun, Antalya, Kas, Gazipasa, and Anamur) in Mediterranean coasts of Turkey. Hepatopancreas tissue was a better indicator in terms of heavy metal concentration compared to the other tissues. In general, Cd, Co, Cr, Ni, and Pb accumulation for the male was found more than that of the female, whereas Cd and Ni accumulation was found higher in the female...
March 1, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28183263/aryl-butenes-active-against-k562-cells-and-lacking-tyrosinase-inhibitory-activity-as-new-leads-in-the-treatment-of-leukemia
#6
Mehdi El Arbi, Emna Ketata, Aref Neifar, Wafa Mihoubi, Girish K Gupta, Pascal Pigeon, Siden Top, Ali Gargouri, Gérard Jaouen
The inhibitory effects of four series of aryl butene derivatives, active against breast cancer, on the monophenolase activity of tyrosinase, in melanin-free ink from Sepia officinalis, have been studied. Hydroxytamoxifen 1, ferrociphenol 17 and several aryl butene analogs have shown strong antiproliferative activity on hormone-dependent and hormone-independent breast cancer cells and were evaluated in leukemia K562 cell proliferation. Their potential to induce skin depigmentation by evaluating their anti-tyrosinase activity was also estimated...
February 8, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28181477/eumelanin-releasing-spongy-like-hydrogels-for-skin-re-epithelialization-purposes
#7
Lucília Pereira da Silva, Sílvia Oliveira, Rogério Pirraco, Tírcia Santos, Rui Reis, Alexandra Marques, Vitor Correlo
Melanin function in the skin has been associated to pigmentation but other properties such as electrical conductance, photoprotection, antioxidant and antimicrobial activity, have also been recognized. Nonetheless, the use of melanin in a skin wound healing context was never considered. In this sense, eumelanin particles with a typical round and nano-sized morphology and electrical conductivity of 2.09x10-8S·cm-1 were extracted from the ink of Sepia officinalis. The ability of primary human keratinocytes to phagocyte eumelanin, which was then accumulated in cytosolic vesicles and nuclei surroundings, was demonstrated...
February 9, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28018245/lateralization-of-eye-use-in-cuttlefish-opposite-direction-for-anti-predatory-and-predatory-behaviors
#8
Alexandra K Schnell, Roger T Hanlon, Aïcha Benkada, Christelle Jozet-Alves
Vertebrates with laterally placed eyes typically exhibit preferential eye use for ecological activities such as scanning for predators or prey. Processing visual information predominately through the left or right visual field has been associated with specialized function of the left and right brain. Lateralized vertebrates often share a general pattern of lateralized brain function at the population level, whereby the left hemisphere controls routine behaviors and the right hemisphere controls emergency responses...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27796978/metal-bioaccumulation-in-two-edible-cephalopods-in-the-gulf-of-gabes-south-eastern-tunisia-environmental-and-human-health-risk-assessment
#9
Lotfi Rabaoui, Radhouan El Zrelli, Rafik Balti, Lamjed Mansour, Pierre Courjault-Radé, Nabil Daghbouj, Sabiha Tlig-Zouari
Samples of Octopus vulgaris and Sepia officinalis were collected from four areas in the Gulf of Gabes, south-eastern Tunisia, and their edible tissues (mantle and arms) were analyzed for cadmium, copper, mercury, and zinc. While the concentrations of metals showed significant differences between the sampling sites, no differences were revealed between the tissues of the two species. The spatial distribution of metals analyzed showed similar pattern for both tissues of the two species, with the highest concentrations found in the central area of Gabes Gulf, and the lowest in the northern and/or southern areas...
January 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27743598/exploration-of-the-therapeutic-potential-effect-of-sepia-officinalis-in-animal-model-of-sepsis-induced-by-cecal-ligation-and-puncture
#10
Asmaa Abd El-Aleem Abd El-Latif, Amany Ahmed Sayed, Amel Mahmoud Soliman, Sohair Ramadan Fahmy
OBJECTIVE: The present investigation explored the therapeutic potential effect of Sepia officinalis body tissue (SOBT) and Sepia officinalis polysaccharide (SOP) extracts, in animal model of sepsis [induced by cecal ligation and puncture (CLP)]. MATERIALS AND METHODS: Experimental animals were divided into 4 groups, Group 1: Sham control rats. Group 2: Septic rats. Group 3: Septic rats treated with methanolic extract of Sepia officinalis body tissue (SOBT) (500mg/kg body weight) for 2days...
December 2016: Injury
https://www.readbyqxmd.com/read/27714785/behavioral-development-in-embryonic-and-early-juvenile-cuttlefish-sepia-officinalis
#11
Caitlin E O'Brien, Nawel Mezrai, Anne-Sophie Darmaillacq, Ludovic Dickel
Though a mollusc, the cuttlefish Sepia officinalis possesses a sophisticated brain, advanced sensory systems, and a large behavioral repertoire. Cuttlefish provide a unique perspective on animal behavior due to their phylogenic distance from more traditional (vertebrate) models. S. officinalis is well-suited to addressing questions of behavioral ontogeny. As embryos, they can perceive and learn from their environment and experience no direct parental care. A marked progression in learning and behavior is observed during late embryonic and early juvenile development...
October 7, 2016: Developmental Psychobiology
https://www.readbyqxmd.com/read/27576138/first-proteomic-analyses-of-the-dorsal-and-ventral-parts-of-the-sepia-officinalis-cuttlebone
#12
Charles Le Pabic, Arul Marie, Benjamin Marie, Aline Percot, Laure Bonnaud-Ponticelli, Pascal Jean Lopez, Gilles Luquet
Protein compounds constituting mollusk shells are known for their major roles in the biomineralization processes. These last years, a great diversity of shell proteins have been described in bivalves and gastropods allowing a better understanding of the calcification control by organic compounds and given promising applications in biotechnology. Here, we analyzed for the first time the organic matrix of the aragonitic Sepia officinalis shell, with an emphasis on protein composition of two different structures: the dorsal shield and the chambered part...
August 26, 2016: Journal of Proteomics
https://www.readbyqxmd.com/read/27530149/diversity-of-apostome-ciliates-chromidina-spp-oligohymenophorea-opalinopsidae-parasites-of-cephalopods-of-the-mediterranean-sea
#13
Dhikra Souidenne, Isabelle Florent, Marc Dellinger, Jean Lou Justine, Mohamed Salah Romdhane, Hidetaka Furuya, Philippe Grellier
Chromidina spp. are enigmatic apostome ciliates (Oligohymenophorea, Opalinopsidae) that parasitise the renal and pancreatic appendages of cephalopods. Only four species have been described, among which only three have been formally named. No DNA sequence has been reported so far. To investigate Chromidina spp. diversity, we sampled cephalopods in the Mediterranean Sea off Tunis, Tunisia, and identified two distinct Chromidina spp. in two different host species: Loligo vulgaris and Sepia officinalis. From haematoxylin-stained slides, we described morphological traits for these parasitic species and compared them to previous descriptions...
2016: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/27331398/analyses-of-sox-b-and-sox-e-family-genes-in-the-cephalopod-sepia-officinalis-revealing-the-conserved-and-the-unusual
#14
Laura Focareta, Alison G Cole
Cephalopods provide an unprecedented opportunity for comparative studies of the developmental genetics of organ systems that are convergent with analogous vertebrate structures. The Sox-family of transcription factors is an important class of DNA-binding proteins that are known to be involved in many aspects of differentiation, but have been largely unstudied in lophotrochozoan systems. Using a degenerate primer strategy we have isolated coding sequence for three members of the Sox family of transcription factors from a cephalopod mollusk, the European cuttlefish Sepia officinalis: Sof-SoxE, Sof-SoxB1, and Sof-SoxB2...
2016: PloS One
https://www.readbyqxmd.com/read/27283470/the-antidepressant-venlafaxine-may-act-as-a-neurodevelopmental-toxicant-in-cuttlefish-sepia-officinalis
#15
Flavie Bidel, Carole Di Poi, Hélène Budzinski, Patrick Pardon, William Callewaert, Adeline Arini, Niladri Basu, Ludovic Dickel, Cécile Bellanger, Christelle Jozet-Alves
The Serotonin/Norepinephrine Reuptake Inhibitor (SNRI) antidepressant venlafaxine (VEN, Effexor(®)) has become one of the most common antidepressants detected in North American and European streams. Mammalian research has established that VEN exposure is associated with a range of structural, neurochemical, and functional alterations of the brain in adults and newborns. However, the neurodevelopmental effects of VEN on non-target organisms have never been investigated. The aim of our research was to decrease this gap in knowledge by characterizing the effects of VEN exposure on a cephalopod mollusk, the common cuttlefish Sepia officinalis...
July 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27267253/composition-and-metabolism-of-phospholipids-in-octopus-vulgaris-and-sepia-officinalis-hatchlings
#16
Diana B Reis, Nieves G Acosta, Eduardo Almansa, Douglas R Tocher, José P Andrade, António V Sykes, Covadonga Rodríguez
The objective of the present study was to characterise the fatty acid (FA) profiles of the major phospholipids, of Octopus vulgaris and Sepia officinalis hatchlings, namely phosphatidylcholine (PC), phosphatidylserine (PS), phosphatidylinositol (PI) and phosphatidylethanolamine (PE); and to evaluate the capability of both cephalopod species on dietary phospholipid remodelling. Thus, O. vulgaris and S. officinalis hatchlings were in vivo incubated with 0.3μM of L-∝-1-palmitoyl-2-[1-(14)C]arachidonyl-PC or L-∝-1-palmitoyl-2-[1-(14)C]arachidonyl-PE...
October 2016: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/27151209/nervous-system-development-in-cephalopods-how-egg-yolk-richness-modifies-the-topology-of-the-mediolateral-patterning-system
#17
A Buresi, A Andouche, S Navet, Y Bassaglia, L Bonnaud-Ponticelli, S Baratte
Cephalopods possess the most complex centralized nervous system among molluscs and the molecular determinants of its development have only begun to be explored. To better understand how evolved their brain and body axes, we studied Sepia officinalis embryos and investigated the expression patterns of neural regionalization genes involved in the mediolateral patterning of the neuroectoderm in model species. SoxB1 expression reveals that the embryonic neuroectoderm is made of several distinct territories that constitute a large part of the animal pole disc...
July 1, 2016: Developmental Biology
https://www.readbyqxmd.com/read/27138338/enzymatic-capacities-of-metabolic-fuel-use-in-cuttlefish-sepia-officinalis-and-responses-to-food-deprivation-insight-into-the-metabolic-organization-and-starvation-survival-strategy-of-cephalopods
#18
Ben Speers-Roesch, Neal I Callaghan, Tyson J MacCormack, Simon G Lamarre, Antonio V Sykes, William R Driedzic
Food limitation is a common challenge for animals. Cephalopods are sensitive to starvation because of high metabolic rates and growth rates related to their "live fast, die young" life history. We investigated how enzymatic capacities of key metabolic pathways are modulated during starvation in the common cuttlefish (Sepia officinalis) to gain insight into the metabolic organization of cephalopods and their strategies for coping with food limitation. In particular, lipids have traditionally been considered unimportant fuels in cephalopods, yet, puzzlingly, many species (including cuttlefish) mobilize the lipid stores in their digestive gland during starvation...
August 2016: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/27099690/new-insights-into-sepsis-therapy-using-sepia-officinalis
#19
Amel M Soliman, Sohair R Fahmy, Amany A Sayed, Asmaa A Abd El-Latif
BACKGROUND: Sepsis remains a major problem for both scientists and clinicians. Cecal ligation and puncture (CLP) is considered the gold standard for animal models of sepsis. The undesirable side effects of certain antibiotics have forced scientists to discover new, natural, and safe antimicrobial agents, such as cephalopods, which are known to display significant antimicrobial activity. OBJECTIVES: The present investigation aims to evaluate the in vitro and in vivo antibacterial and antiseptic efficacy of Sepia officinalis body tissue (SOBT) extract and S...
January 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/27053650/metabolic-rate-and-rates-of-protein-turnover-in-food-deprived-cuttlefish-sepia-officinalis-linnaeus-1758
#20
Simon G Lamarre, Tyson J MacCormack, Antonio V Sykes, Jennifer R Hall, Ben Speers-Roesch, Neal I Callaghan, William R Driedzic
To determine the metabolic response to food deprivation, cuttlefish (Sepia officinalis) juveniles were either fed, fasted (3 to 5 days food deprivation), or starved (12 days food deprivation). Fasting resulted in a decrease in triglyceride levels in the digestive gland, and after 12 days, these lipid reserves were essentially depleted. Oxygen consumption was decreased to 53% and NH4 excretion to 36% of the fed group following 3-5 days of food deprivation. Oxygen consumption remained low in the starved group, but NH4 excretion returned to the level recorded for fed animals during starvation...
June 1, 2016: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
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