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LOX-induced lipid peroxidation mechanism responsible for the detrimental effect of marine diatoms on zooplankton grazers


, : LOX-induced lipid peroxidation mechanism responsible for the detrimental effect of marine diatoms on zooplankton grazers. Chembiochem 8(15): 1810-1818

Some marine diatoms negatively affect the reproduction of dominant zooplankton grazers such as copepods, thus compromising the transfer of energy through the marine food chains. In this paper, the metabolic mechanism that leads to diatom-induced toxicity is investigated in three bloom-forming microalgae. We show that copepod dysfunctions can be induced by highly reactive oxygen species (hROS) and a blended mixture of diatom products, including fatty acid hydroperoxides (FAHs); these compounds display teratogenic and proapoptotic properties. The process is triggered by the early onset of lipoxygenase activities that elicit the synthesis of species-specific products, the basic structures of which were established (1-20); these compounds boost oxidative stress by massive lipid peroxidation. Our study might explain past laboratory and field results showing how diatoms damage zooplankton grazers even in the absence of polyunsaturated aldehydes, a class of molecules that has been formerly implicated in mediating the toxic activity of diatoms on copepods.

US$19.90

PMID: 17886321

DOI: 10.1002/cbic.200700269


Other references

O'donnell C.M.; Schultheis S.; Vekich S., 1991: A gc ms assay for multiple drugs of abuse in urine using a single cation exchange solid phase extraction cartridge. Clinical Chemistry 37(6): 1013

Kojima, T.; Oguma, A.; Suganuma, H.; Tahara, K., 2012: Life cycle assessment of fuel production for biomass from dry land afforestation. Biomass has been focused as a fuel resource because of its huge abundance and carbon-neutral characteristics. Thus, we attempted to use tree biomass as the resource to automotive fuel. From the global warming point of view, the biomass energy prod...

Kucha Henryk; Wieczorek Andrzej, 1984: Sulfide-carbonate relationships in the Navan (Tara) Zn-Pb deposit, Ireland. Samples from the mineralized micrite were investigated. They contain Zn- and Fe-bearing low Mg-calcite, dolomite. Fe-dolomite, minrecordite-CaZn (CO (sub 3) ) (sub 2) , sphalerite, pyrite, melnikovite and overgrown quartz. Zn-dolomite is sulfidize...

Hotz, H.W., 1958: New findings in the field of deficiency anemias. Praxis 47(4): 88-92

Hurwitz, L.S.; Tasch, V., 1977: Developing a quality assurance program in nursing. Supervisor Nurse 8(6): 50-1, 54-5, 58-9

Mehl, J., 1967: The industrial physicial and primary criteria of "unhealthiness". Archives des Maladies Professionnelles de Medecine du Travail et de Securite Sociale 28(3): 391-395

Lukomski, S., 1954: Seasonal variations in foaling of half-bred mares in the Poznan district. In prewar years over 90% of the foalings of half bred English mares recorded in the Poznan-Pomeranian studbook took place during the period Jan. to May, with a peak in the first half of April. In the postwar period foaling has been concentrated ma...

Agostinelli, E.; Arancia, G.; Vedova, L.Dalla.; Belli, F.; Marra, M.; Salvi, M.; Toninello, A., 2004: The biological functions of polyamine oxidation products by amine oxidases: perspectives of clinical applications. The polyamines spermine, spermidine and putrescine are ubiquitous cell components. If they accumulate excessively within the cells, due either to very high extracellular concentrations or to deregulation of the systems which control polyamine home...

Rodriguez, R.; Alvarez Lorenzo, C.; Concheiro, A., 2003: Cationic cellulose hydrogels: Kinetics of the cross-linking process and characterization as pH-/ion-sensitive drug delivery systems. The cross-linking process of two cationic hydroxyethylcelluloses of different hydroxyethyl and ammonium group contents, polyquaternium-4 (PQ-4) and polyquaternium-10 (PQ-10), with ethylenglycol diglycidylether (EGDE) was characterized and optimize...

Silvius, MJ.; Verheugt, WJM.; Iskandar, J., 1986: Coastal wetlands inventory of southeast Sumatra. ICBP Study Report, 1-65 No. 9