| [effect of mytilane, a bioglycan from the mussel crenomytilus grayanus, on the course and outcome of experimental flu infection]. | materials characterizing the antiviral activity of mytilane, manifested by the protection of 50-60% of mice infected with the lethal dose of influenza virus and by a decrease in the severity of pathological changes in the lungs of mice, are presented. the inhibiting activity of mytilane with respect to the reproduction of influenza virus in vivo and in vitro under experimental conditions is demonstrated. | 1992 | 1509854 |
| [the immunomodulating action of mytilan in an experimental influenza infection]. | the materials characterizing the immunomodulating activity of mytilan, a bioglycane from an industrial object of japanese sea, crenomytilus grayanus, in experimental influenza infection are presented. the preparation protected up to 60% of mice intranasally inoculated with influenza virus, and significantly inhibited influenza virus reproduction. it induced interferon (possibly gamma if) synthesis in low titres. the immunomodulating effect of mytilan consisted in stimulation of specific antibody ... | 1990 | 2219849 |
| [combined use of mytilan and gentamycin in experimental infections ]. | it was shown that mytilan, a polysaccharide isolated from the mantle of crenomytilus grayanus stimulated the host nonspecific resistance to infections. this was evident from the survival rate of the animals infected with lethal doses of e. coli and s. aureus. in addition, the combined use of gentamicin and mytilan in treatment of the infections caused by the above organisms enabled to increase the antibiotic therapy efficacy with using lower doses of both the antibiotic and the polysaccharide. | 1988 | 3288147 |
| [stimulation of nonspecific body resistance by mytilan, a polysaccharide isolated from the mussel. crenomytilis grayanus]. | the results of the study on the immunostimulant effect of mytilan, a polysaccharide isolated from crenomytilus grayanus inhabiting the sea of japan are presented. it was shown that a single dose of the drug administered parenterally stimulated the natural protective reactions of the macroorganism evident from an increase in the leukocyte count in the peripheral blood of the experimental animals and the phagocytic activity of polymorphonuclear nuclear leukocytes. mytilan stimulated humoral immuni ... | 1981 | 7023374 |
| [nonspecific stimulation of resistance with mytilan--a polysaccharide isolated from the mussel crenomytilus grayanus]. | | 1981 | 7245952 |
| [cellular localization of mucin type receptors determined with novel galnac/gal-specific lectin from sea mussel crenomytilus grayanus in human colon tumors]. | | 1999 | 10599506 |
| pseudoalteromonas ruthenica sp. nov., isolated from marine invertebrates. | on the basis of phenotypic and genotypic characteristics and analysis of 165 rrna sequences, a novel species belonging to the genus pseudoalteromonas is described. two pale-orange-pigmented strains, kmm 300t and kmm 290, isolated respectively from a mussel, crenomytilus grayanus, and a scallop, patinopecten yessoensis, are marine, gram-negative, aerobic, rod-shaped bacteria that produce a number of antimicrobial compounds. the strains are able to degrade gelatin, elastin, starch, dna and tween 8 ... | 2002 | 11837308 |
| tolerance to cadmium of free-living and associated with marine animals and eelgrass marine gamma-proteobacteria. | the tolerance to cd2+ and possible mechanisms of cd2+ detoxification by 178 free-living bacteria isolated from sea water, associated with marine animals (a mussel crenomytilus grayanus, a scallop patinopecten yessoensis), and eelgrass zostera marina collected in the sea of japan and the sea of okhotsk have been studied. the concentrations of 25 and 50 mg cd2+/l were highly toxic and inhibited the growth from 54% to 78% of the total bacteria studied. the free-living bacteria isolated from seawate ... | 2002 | 11927987 |
| proteolytic substructure of myorod, a thick filament protein of molluscan smooth muscles. | myorod (mr), a new thick filament protein of molluscan smooth muscles, is an alternatively spliced product of the myosin (mn) heavy chain gene. we studied digestion of mr and mn from the posterior adductor of crenomytilus grayanus and the outer portion of adductor of mizuchopecten (patinopecten) yessoensis by papain and constructed the proteolytic substructure of mr, that is an analogue to mn substructure. there are a head domain (analogue of mn s1) and a rod domain (analogue of mn rod); the jun ... | 2002 | 12223213 |
| [modulation of fcgamma and c3b receptor expression by marine bioglycans in mouse splenocytes]. | investigation of polysacharide immunomodulators of marine origin was performed--mitilane, alpha-1,4;1,6-d-glucane, isolated from midia crenomytilus grayanus, and translam--beta-1,3;1,6-d-glucane isolated from marine algae laminaria cichorioides were compared. mechanisms of phagocytes cells activation were investigated. dose-dependent ability of investigated bioglycanes to facilitate fc gamma r [symbol: see text] c3br expression at mice splenocytes was demonstrated in vivo and in vitro. the effec ... | 2003 | 12914116 |
| "twitchin-actin linkage hypothesis" for the catch mechanism in molluscan muscles: evidence that twitchin interacts with myosin, myorod, and paramyosin core and affects properties of actomyosin. | "twitchin-actin linkage hypothesis" for the catch mechanism in molluscan smooth muscles postulates in vivo existence of twitchin links between thin and thick filaments that arise in a phosphorylation-dependent manner [n.s. shelud'ko, g.g. matusovskaya, t.v. permyakova, o.s. matusovsky, arch. biochem. biophys. 432 (2004) 269-277]. in this paper, we proposed a scheme for a possible catch mechanism involving twitchin links and regulated thin filaments. the experimental evidence in support of the sc ... | 2007 | 17720132 |
| [thin filaments of molluscan catch muscles contain a calponin-like protein]. | a novel 40 kda protein was detected in native thin filaments from catch muscles of the mussel crenomytilus grayanus. the maldy-tof analysis of the protein showed a 40% homology with the calponin-like protein from the muscle of mytilus galloprovincialis (45 kda), which has a 36% homology with smooth muscle calponin from chicken gizzard (34 kda). the amount of the calponin-like protein in thin filaments depends on isolation conditions and varies from the complete absence to the presence in amounts ... | 2010 | 21033343 |
| recombinant production and characterization of a highly active alkaline phosphatase from marine bacterium cobetia marina. | the psychrophilic marine bacterium, cobetia marina, recovered from the mantle tissue of the marine mussel, crenomytilus grayanus, which contained a gene encoding alkaline phosphatase (ap) with apparent biotechnology advantages. the enzyme was found to be more efficient than its counterparts and showed k cat value 10- to 100-fold higher than those of all known commercial aps. the enzyme did not require the presence of exogenous divalent cations and dimeric state of its molecule for activity. the ... | 2015 | 25260971 |
| [effect of mytilan, a polysaccharide from crenomytilus grayanus, on the functional activity of peritoneal macrophages]. | the studies showed that mytilan, a polysaccharide from crenomytilus grayanus had a marked activating effect on macrophages evident from respective morphological changes and increased metabolic and functional activity of the macrophages. exposure to mytilan resulted in an increase in the number of the macrophages and their size (optic microscopy), changes in their surface (scanning microscopy) and ultrastructural reconstruction of the cells (light microscopy). it was shown that subcutaneous and i ... | 1989 | 2543345 |
| isolation and characterization of new galnac/gal-specific lectin from the sea mussel crenomytilus grayanus. | a lectin, crenomytilus grayanus (cgl), was purified from sea mussel c. grayanus by affinity chromatography on acid-treated sepharose 6b and following gel filtration on sephacryl s-200. molecular weight of the lectin obtained was determined by sds-page to be 18,000, independent of the presence or absence of beta-mercaptoethanol. cgl was found to agglutinate all types of the human erythrocytes together with mouse and rabbit. in hemagglutination inhibition assays, n-acetyl-d-galactosamine, d-galact ... | 1998 | 9568372 |
| phenotypic diversity of pseudoalteromonas citrea from different marine habitats and emendation of the description. | four strains of marine, aerobic, agar-decomposing bacteria with one polar flagellum and with dna g + c contents of 38.9-40.2 mol% were isolated from the far-eastern mussels crenomytilus grayanus and patinopecten yessoensis. these four strains were identified as pseudoalteromonas; however, they were phenotypically different from species described previously according to carbon compound utilization tests and the biolog identification system. high agar-decomposing activity was found in two strains, ... | 1998 | 9542094 |
| [effect of mytilan--a polysaccharide from crenomytilus grayanus--on local suppurative processes]. | the study on the effect of mytilan on the local suppurative processes caused by administration of a virulent staphylococcal culture to the mouse pad showed that this polysaccharide isolated from crenomytilus grayanus had a pronounced antiexudative and antinecrotic effect. the positive results of the experiments may be explained by stimulation of the phagocytic activity of polymorphonuclear leukocytes and macrophages by mytilan which results in acceleration of the reparative processes in local st ... | 1985 | 4062278 |
| [localization of 17 beta-hydroxysteroid dehydrogenase in the gonads of bivalve mollusks--the sea pecten (patinopecten yessoensis jay) and gray's mussel (crenomytilus grayanus dunker)]. | presence of 17 beta-hydroxysteroid dehydrogenase (17 beta-hsd) in testes and ovaries of the common mussels--patinopecten yessoensis (jay) and crenomytilus grayanus (dunker) has been demonstrated histochemically. the enzyme is revealed in some granular amebocytes and germ cells. in growing oocytes its activity is higher that in oocytes completed their growth. 17 beta-hsd is revealed electron microscopically near agranular endoplasmic reticulum, or on the external surface of its membranes and in g ... | 1988 | 3242461 |
| [gonad innervation in bivalve mollusks]. | in marine lamellibranchia--patinopecten yessoensis (jay) and crenomytilus grayanus (dunker)--neural cells, small ganglia and neural fibres have been revealed in the gonad wall. the sensitive and effector parts are presented by rather variable morphological formations. by means of histochemical and ultrastructural investigations, functional affiliation of axons is revealed and their relations to tissue elements of the gonad are demonstrated. the effector neural apparatus is formed by peptidergic, ... | 1983 | 6838386 |
| molluscan smooth catch muscle contains calponin but not caldesmon. | we isolated ca(2+)-regulated thin filaments from the smooth muscle of the mussel crenomytilus grayanus and studied the protein composition of different preparations from this muscle: whole muscle, heat-stable extract, fractions from heat-stable extract, thin filaments and intermediate stages of thin filaments purification. among the protein components of the above-listed preparations, we did not find caldesmon (cad), although two isoforms of a calponin-like (cap-like) protein, which along with c ... | 2013 | 23081709 |
| neuroplastic and neuropathological changes in the central nervous system of the gray mussel crenomytilus grayanus (dunker) under environmental stress. | we studied here neuron ultrastructure, synaptic plasticity and subcellular localization of nadph-diaphorase (nadph-d), a cytochemical marker for nitric oxide syntase, in the pedal ganglia of the gray mussel crenomytilus grayanus sampled from the polluted and reference sites in amursky bay (sea of japan) at lower and higher water temperature (in the beginning and the end of august, respectively). at lower temperature, neuroplastic changes in mussel ganglia prevailed: a sharp increase in the numbe ... | 2010 | 20502933 |
| [changes in the lipid composition of embryonic cells of the mussel mytilus trossulus during cryopreservation]. | a comparative analysis of the lipid composition of embryonic cells of the mussel mytilus trossulus prior to, and after, cryopreservation in liquid nitrogen was carried out in the presence of two types of cryoprotectors: 1) dimethylsulfoxide and trehalose; and 2) dimethylsulfoxide, trehalose, total lipid extract from the mussel crenomytilus grayanus, alpha-tocopherol and ascorbic acid. it was found that not only the cell viability but also the fatty acid composition of cell lipids after cryoprese ... | 2013 | 18819284 |
| 40-kda protein from thin filaments of the mussel crenomytilus grayanus changes the conformation of f-actin during the atpase cycle. | polarized fluorimetry was used to study in ghost muscle fibers the influence of a 40-kda protein from the thin filaments of the mussel crenomytilus grayanus on conformational changes of f-actin modified by the fluorescent probes 1,5-iaedans and fitc-phalloidin during myosin subfragment (s1) binding in the absence of nucleotides and in the presence of mgadp or mgatp. the fluorescence probes were rigidly bound with actin, which made the absorption and emission dipoles of the probes sensitive to ch ... | 2013 | 23586721 |
| cdna cloning and structural characterization of a lectin from the mussel crenomytilus grayanus with a unique amino acid sequence and antibacterial activity. | an amino acid sequence of galnac/gal-specific lectin from the mussel crenomytilus grayanus (cgl) was determined by cdna sequencing. cgl consists of 150 amino acid residues, contains three tandem repeats with high sequence similarities to each other (up to 73%) and does not belong to any known lectins family. according to circular dichroism results cgl is a β/α-protein with the predominance of β-structure. cgl was predicted to adopt a ß-trefoil fold. the lectin exhibits antibacterial activity and ... | 2013 | 23886951 |
| first data on sperm heteromorphism in the mussels crenomytilus grayanus and mytilus trossulus (bivalvia) from the sea of japan. | | 2013 | 24385170 |
| a lectin with antifungal activity from the mussel crenomytilus grayanus. | lectins (carbohydrate-binding proteins) are well known to actively participate in the defense functions of vertebrates and invertebrates where they play an important role in the recognition of foreign particles. in this study, we investigated of in vitro antifungal activity of lectin from the mussel crenomytilus grayanus (cgl). enzyme-linked immunosorbent assay indicated that cgl was predominantly detectable in tissues of mantle and to a lesser degree in the tissues of muscle, hepatopancreas, gi ... | 2015 | 25482060 |
| distribution of dtx-3 in edible and non-edible parts of crenomytilus grayanus from the sea of japan. | seasonal dynamics and the distribution of dinophysistoxin-3 (dtx-3) in organs of mussel crenomytilus grayanus, collected in 2013 in peter the great bay, sea of japan, were determined. active toxin forms (oa, dtx-1/2) concentrated in digestive glands (60-80%), whereas non-active 7-o-acyl derivatives (dtx-3) were more abundant in edible soft tissues (more than 80%). possible mechanism of fast removing of dtx-3 from the digestive gland and accumulation of dtx-3 in the soft tissues is supposed. | 2015 | 25702960 |
| [modulation of s-1 conformation and inhibition of the skeletal muscle s-1-atpase by calponin of the mussel]. | a novel 40 kda protein has been detected in native thin filaments from catch muscles of the mussel crenomytilus grayanus. in this study, using skeletal muscle actin and s-1, we investigated the effects of the mussel 40-kda actin-binding protein on the acto · s-1 atpase activity. on increasing the 40-kda actin-binding protein (cap-40) concentration, the actin-activated atpase activity decreased, and was inhibited 80% at a cap-40 to actin ratio of 0.5. polarized fluorimetry technique and glycerina ... | 2014 | 25711086 |
| hybrid and non-hybrid actomyosins reconstituted with actin, myosin and tropomyosin from skeletal and catch muscles. | in this study, we investigated hybrid and non-hybrid actomyosin models including key contractile proteins: actin, myosin, and tropomyosin. these proteins were isolated from the rabbit skeletal muscle and the catch muscle of the mussel crenomytilus grayanus. our results confirmed literature data on an unusual ability of bivalve's tropomyosin to inhibit mg-atpase activity of skeletal muscle actomyosin. we have shown that the degree of inhibition depends on the environmental conditions and may vary ... | 2015 | 26166820 |
| troponin-like regulation in muscle thin filaments of the mussel crenomytilus grayanus (bivalvia: mytiloida). | muscles of bivalve molluscs have double calcium regulation--myosin-linked and actin-linked. while the mechanism of myosin-linked regulation is sufficiently studied, there is still no consensus on the mechanism of actin-linked regulation. earlier we showed a high degree of ca2+-sensitivity of thin filaments from the adductor muscle of the mussel crenomytilus grayanus (mytiloida). in order to elucidate the nature of this regulation, we isolated the fraction of minor proteins from the mussel thin f ... | 2015 | 26213227 |
| using heavy metal content and lipid peroxidation indicators in the tissues of the mussel crenomytilus grayanus for pollution assessment after marine environmental remediation. | we examined the effects of environmental remediation on the heavy metal concentration and lipid peroxidation activity in the digestive gland and gills of the marine mussel crenomytilus grayanus. changes in heavy metal concentrations and lipid peroxidation biomarkers in the tissues of mussels collected at a contaminated site were compared with those obtained from a reference site. prior to remediation the concentration of pb, cu, cd, fe and zn and the levels of malondialdehyde, conjugated dienes ... | 2015 | 26271612 |
| carbohydrate-binding motifs in a novel type lectin from the sea mussel crenomytilus grayanus: homology modeling study and site-specific mutagenesis. | the galnac/gal-specific lectin from the sea mussel crenomytilus grayanus (cgl) was shown to represent a novel family of lectins and to be characterized by three amino acid tandem repeats with high (up to 73%) sequence similarities to each other. we have used homology modeling approach to predict cgl sugar-binding sites. in silico analysis of cgl-galnac complexes showed that cgl contained three binding sites, each of which included conserved hpy(k)g motif. in silico substitutions of histidine, pr ... | 2015 | 26439416 |
| structure of a lectin from the sea mussel crenomytilus grayanus (cgl). | cgl is a 150 amino-acid residue lectin that was originally isolated from the sea mussel crenomytilus grayanus. it is specific for binding galnac/gal-containing carbohydrate moieties and in general does not share sequence homology with other known galectins or lectins. since cgl displays antibacterial, antifungal and antiviral activities, and interacts with high affinity with mucin-type receptors, which are abundant on some cancer cells, knowledge of its structure is of significant interest. cond ... | 2015 | 26527272 |
| application of different enzyme assays and biomarkers for pollution monitoring of the marine environment. | new phosphatase and dnase inhibition tests for assessing the total pollution of a natural marine ecosystem were applied. the seawater samples with different pollution degrees were collected in the troitsa bay of the peter the great bay (the sea of japan). the sensitivity of the alkaline phosphatase test to integrated pollution was in accordance with the sensitivity of the standard sea urchin sperm cell toxicity test. the increased seawater pollution level was shown to result in an up to fourfold ... | 2016 | 26721566 |
| а new gal/galnac-specific lectin from the mussel mytilus trossulus: structure, tissue specificity, antimicrobial and antifungal activity. | in the present study, a new gal/galnac specific lectin from the mussel mytilus trossulus (designated as mtl) was identified, and its expression levels, both in tissues and toward pathogen stimulation, were then characterized. the mtl primary structure was determined via cdna sequencing. deduced sequence of 150 amino acid residues showed 89% similarity to lectins from the mussels crenomytilus grayanus and mytilus galloprovincialis that were the first members of a new family of zoolectins. the res ... | 2016 | 26802895 |
| calponin-like protein from mussel smooth muscle is a competitive inhibitor of actomyosin atpase. | the goal of this work was to elucidate the mechanism of inhibition of the actin-activated atpase of myosin subfragment-1 (s1) by the calponin-like protein from mussel bivalve muscle. the calponin-like protein (cap) is a 40-kda actin-binding protein from the bivalve muscle of the mussel crenomytilus grayanus. kinetic parameters vmax and katpase of actomyosin atpase in the absence and the presence of cap were determined to investigate the mechanism of inhibition. it was found that cap mainly cause ... | 2016 | 26885580 |
| a multivalent marine lectin from crenomytilus grayanus possesses anti-cancer activity through recognizing globotriose gb3. | in this study, we report the structure and function of a lectin from the sea mollusk crenomytilus grayanus collected from the sublittoral zone of peter the great bay of the sea of japan. the crystal structure of c. grayanus lectin (cgl) was solved to a resolution of 1.08 å, revealing a β-trefoil fold that dimerizes into a dumbbell-shaped quaternary structure. analysis of the crystal cgl structures bound to galactose, galactosamine, and globotriose gb3 indicated that each cgl can bind three ligan ... | 2016 | 27010847 |
| crenomytilus grayanus 40kda calponin-like protein: cdna cloning, sequence analysis, tissue expression, and post-translational modifications. | calponin-like protein (cap-40), a third major protein after actin and tropomyosin, has recently been identified by us in the ca(2+)-regulated thin filaments of mussel crenomytilus grayanus. it contains calponin homology domain, five calponin family repeats and possesses similar biochemical properties as vertebrate smooth muscle calponin. in this paper, we report a full-length cdna sequence of cap-40, study its expression pattern on mrna and protein levels, evaluate cap-40 post-translational modi ... | 2017 | 28288367 |
| metal concentrations in mussel crenomytilus grayanus and oyster crassostrea gigas in relation to contamination of ambient sediments. | the relationship between zn, cu, cd, pb, and ni concentrations in soft tissues of mussels and oysters and those in ambient sediments was examined. the study area was the coastal habitats of the northwestern sea of japan, which has a broad range of contamination due to urban sewage. significant increases of all metals, except ni, were observed in mussel crenomytilus grayanus at concentrations of easily leachable metals in ambient sediments higher than 2, 100, and 800 microg/g for cd, cu, and zn, ... | 2003 | 12705947 |
| data supporting functional diversity of the marine bacterium cobetia amphilecti kmm 296. | data is presented in support of functionality of hyper-diverse protein families encoded by the cobetia amphilecti kmm 296 (formerly cobetia marina kmm 296) genome ("the genome of the marine bacterium cobetia marina kmm 296 isolated from the mussel crenomytilus grayanus (dunker, 1853)" [1]) providing its nutritional versatility, adaptability and biocontrol that could be the basis of the marine bacterium evolutionary and application potential. presented data include the information of growth and b ... | 2016 | 27508225 |
| a highly active alkaline phosphatase from the marine bacterium cobetia. | an alkaline phosphatase with unusually high specific activity has been found to be produced by the marine bacterium cobetia marina (strain kmm mc-296) isolated from coelomic liquid of the mussel crenomytilus grayanus. the properties of enzyme, such as a very high specific activity (15000 de u/1 mg of protein), no activation with divalent cations, resistance to high concentrations of inorganic phosphorus, as well as substrate specificity toward 5' nucleotides suggest that the enzyme falls in an i ... | 2005 | 15906116 |
| sem observation of structural (non-mineralogical) alteration inside the previously crystallized nacreous layer of crenomytilus grayanus (bivalvia: mytilidae). | a microstructural and mineralogical study shows the transition of aragonitic nacreous tablets to aragonitic prisms inside previously secreted nacre, i.e. without contact with the mantle or extrapallial fluid, in a field-collected mytilid bivalve crenomytilus grayanus (d.). the intermediate zone between nacre and new prisms is represented by nacre tablets "stuck together" or by disordered calcium carbonate material. the modified nacre forms aragonitic lenses of prisms (alps). these lenses may rea ... | 2013 | 23022084 |
| 40-kda actin-binding protein of thin filaments of the mussel crenomytilus grayanus inhibits the strong bond formation between actin and myosin head during the atpase cycle. | mobility and spatial orientation of a novel 40-kda actin-binding protein from the smooth muscle of the mussel crenomytilus grayanus was studied by polarized fluorometry. the influence of this protein on orientation and mobility of the myosin heads was investigated during modeling the different stages of the atpase cycle. the 40-kda actin-binding protein affected the strong actin-myosin binding. we suggest that the 40-kda actin-binding protein is involved in regulation of the actin-myosin interac ... | 2012 | 22860910 |
| [effect of copper ions on spatial density of no-synthase-positive cells in the intestine of the mussel crenomytilus grayanus (mollusca: bivalvia: mytilidae) a histochemical study]. | by the histochemical method of detection of nadph-diaphorase (nadph-d) (ec 1.6.99.1) the state of nitroxidergic enteric nervous system of the mussel crenomytilus grayanus was studied under conditions of an increased copper concentration in water. under the action of copper ions the density of distribution of nadph-d-positive cells has been established to be changed as compared with control throughout 28 days. a sharp rise of proportion of the labeled cells and their enzyme activity was noted aft ... | 2015 | 20583583 |
| [glutathione-s-transferase as a molecular biomarker of the state of marine organisms influenced by anthropogenic pressure]. | the activity ofglutathione-s-transferase (gst), a key phase ii enzyme catalyzing the biotransformation of organic electrophilic compounds, was studied in the bivalve crenomytilus grayanus, the mysid shrimp neomysis mirabilis, and the flounder liopsetta pinnifasciata from peter the great bay, sea of japan. gst activity was increased in fish and mollusks from polluted areas of the bay, compared to background areas. in mysid shrimps, pollution caused inhibition of the activity of this enzyme. the r ... | 2016 | 21870495 |
| [adaptation of the cholinergic system of crenomytilus grayanus (bivalvia, mytilidae) to the impact of natural and anthropogenic conditions]. | the effects of environmental conditions on cholinesterase activity and kinetic parameters of substrate hydrolysis in the hemolymph of the mussel crenomytilus grayanus were studied. under seasonal upwellings, the cholinergic system efficiency is provided for by a wide range of efficient concentrations of the substrate, i.e., under such conditions the mussels at the molecular level have a quantitative adaptation strategy of the enzyme. in mussels from the stationary upwelling zone (at a steady low ... | 2016 | 21506396 |
| nadph-diaphorase activity in the central nervous system of the gray mussel crenomytilus grayanus (dunker) under stress conditions: a histochemical study. | nadph-diaphorase (nadph-d) is a histochemical marker for nitric oxide synthase (nos) and is widely used to identify nitric oxide (no) producing cells in the central nervous system (cns) of both vertebrates and invertebrates. nadph-d histochemistry was used to quantitatively characterize putative no-producing neurons in the cns of the gray mussel crenomytilus grayanus subjected to two kinds of stress, environmental pollution and hypoxia, the latter caused by the mollusk transportation in a small ... | 2008 | 18442849 |
| cadmium concentration and subcellular distribution in organs of the mussel crenomytilus grayanus from upwelling regions of okhotsk sea and sea of japan. | cadmium (cd) accumulation and subcellular distribution in the digestive gland and kidney of mussel crenomytilus grayanus from naturally cd elevated areas was studied. mussels were collected from three sites of okhotsk sea and sea of japan: control area (site 1), seasonal upwelling region (site 2), and stationary upwelling region (site 3). mussel from site 3 was shown to accumulate a significantly increased cd concentration in the digestive gland and an extremely high cd concentration (1780+/-732 ... | 2006 | 16944042 |
| [neurosecretory activity and the dynamics of the lipid content in the cns neurons in the bivalve mollusk, gray's mussel (crenomytilus grayanus dunker)]. | neurosecretory process was studied in the aspect of lipid exchange in the cns ganglia in the bivalve mollusk using light optics, electron microscopy, cytological and biochemical methods. neurosecretory material forming was shown to be followed by changes in volume in neuron, nucleus and nucleolus, increase of nucleolar-plasmic relations, granular endoplasmic reticulum proliferation of mitochondria and complex dictyosomes. changes in lipid content are inversely proportional to the neurosecreted a ... | 1996 | 8983512 |
| the structure of mytilan, a bioglycan-immunomodulator isolated from the mussel crenomytilus grayanus. | mytilan, isolated from the mantle of the mussel crenomytilus grayanus and which possesses high immunomodulating activity, is a non-covalently linked complex of a polysaccharide (95%) and protein (5%) with lectin activities. chromatography of mytilan on agarose separated the polysaccharide and protein constituents. the protein appeared to have the lectin properties. methylation analysis, smith degradation, digestion with alpha-amylase, and 13c-n.m.r. spectroscopy showed the polysaccharide to be a ... | 1992 | 1596920 |
| [changes in the sensitivity of the heart of marine mollusks to acetylcholine during the spawning period]. | in experiments on 5 species of marine bivalve molluscs (spisula sachalinensis, callista brevisiphonata, mactra sulcatoria, peronidia venulosa, mya japonica) it has been shown that the level of sensitivity of cardiac muscle to ach corresponds to functional condition of the reproductive system. during the discharge of mature sexual products, significant increase in the sensitivity to the mediator is observed -- from threshold ach concentrations about 10(-9) m to 10(-15)--10(-17) m during spawning. ... | 2013 | 506591 |
| [cortical reaction of the eggs of the mussel, crenomytilus grayanus]. | the extrusion of the contents of cortical granules was found in the places of contact of spermatozoa with the egg surface upon fertilization of the mussel eggs. not all cortical granules broke down, a great number of them is preserved in the developing embryo cells. the possible mechanism and importance of this phenomenon are discussed. | 1979 | 460799 |
| [determination of the age and growth rate of the mussel crenomytilus grayanus (dunker) from its shell structure]. | | 1974 | 4843936 |
| [existence of 2 forms of the commercial bivalve mollusk crenomytilus grayanus (dunker)]. | | 1968 | 5747826 |
| thermotropic behavior of major phospholipids from marine invertebrates: changes with warm-acclimation and seasonal acclimatization. | the crystal-liquid crystal-isotropic melt phase transitions of phosphatidylcholine (pc) and phosphatidylethanolamine (pe) from muscle tissue of five species (actinia metridium senile fimbriatum, mussel crenomytilus grayanus, sea-urchin strongylocentrotus intermedius, starfish distolasterias nipon and the ascidian halocynthia aurantium) of marine invertebrates, collected in winter at 0 degrees c and then acclimated to 18.5 degrees c for 5 days, were studied by differential scanning calorimetry an ... | 2002 | 12381376 |
| metal accumulation in mussels of the kuril islands, north-west pacific ocean. | concentrations of cadmium, copper, iron, lead, manganese, nickel and zinc were investigated in two species of mussel from the kuril islands in the north-western pacific ocean: the short-lived mussel mytilus trossulus and the much larger and longer-lived crenomytilus grayanus. the concentrations of most elements were low, and these reported levels are believed to reflect background values for pristine locations. however, both iron and zinc concentrations were elevated in some samples taken from a ... | 2002 | 11939290 |
| an in vitro study of the effect of reactive oxygen species on subcellular distribution of deposited cadmium in digestive gland of mussel crenomytilus grayanus. | the study was performed to assess in vitro effects of reactive oxygen species (ros, oxyradicals) on intracellular distribution of accumulated cadmium in digestive gland of the mussel crenomytilus grayanus. in vitro induction of ros (by fe/ascorbate reaction) in tissue homogenates of cd-accumulated mussels led to a significant increase in lipid peroxidation (as conjugated dienes and malondialdehyde) and also to decrease in reduced glutathione and cd-binding protein contents. also fraction of mt-l ... | 2005 | 15917093 |
| [neutrophil activation by sea hydrobiont biopolymers]. | biopolymers of sea hydrobionts such as mytilan, alpha-1,4;1,6-d-glycan isolated from the muntle of the mussel crenomytilus grayanus; translam, beta-1,3;1,6-d-glucan isolated from the seaweed laminaria cichorioides; fucoidan, a sulfated polysccharide isolated from the algae fucus evanescens; zosterin, a pectin isolated from sea grass of the family zosteraceae were comparatively studied. the mechanisms of the phagocyte activation were investigated and the dose-dependent ability of the biopolymers ... | 2003 | 15002173 |
| [localization of no-ergic elements in mouth, lips and esophagus of the bivalve mollusc crenomytilus grayanus]. | | 2013 | 14689737 |
| [comparative immunologic activity of marine bioglycans]. | immunomodulating activity of three marine bioglycanes of different structure was investigated. the following preparations were compared: mitilan--glycoprotein, containing 1,4-alpha-d-glucane, isolated from mussel crenomytilus grayanus; translam--beta-1,3; 1,6-beta-d-glucane isolated from laminaria cichorioides and zosterin--low-metoxylated pectine isolated from marine plant of genera zosteraceae. it was shown that immune response modulating was due to delicate and complex interaction of immune c ... | 2001 | 11697245 |
| [localization of no-ergic elements in the central nervous system of the bivalve mollusk crenomytilus grayanus]. | | 2013 | 11190146 |
| the adaptation of mussels crenomytilus grayanus to cadmium accumulation result in alterations in organization of microsomal enzyme-membrane complex (non-specific phosphatase). | the kinetic parameters (v(m), k(m) and slope) of membrane-bound microsomal non-specific phosphatase (npase, with g6p as the substrate) from the digestive gland of unexposed and cadmium adapted (45 days for 100 µg cd(2+)/l) mussels were investigated. in vivo and in vitro approaches were used. adaptation of mussels (crenomytilus grayanus) to cadmium resulted in a 1.6-fold increase in npase activity. v(m) was increased by 1.6-fold, but k(m) was the same in terms of enzyme kinetics. this indicates t ... | 2000 | 10930649 |