Hybridization and invasive species in a threatened freshwater fish community under environmental pressures: Morphometric and molecular evidence     

Lucía Galvez-Bravo  Anabel Perdices  R. J. De Miguel  Ángela Lambea-Camblor  Charlotte Penney  Carlo Meloro  Begoña Martinez-Cruz  Richard P. Brown 《水产资源保护:海洋与淡水生态系统》2024,34(1):e4046

Modeling spatio-temporal crop allocation patterns by a stochastic decision tree method, considering agronomic driving factors     

Luc Sorel  Patrick Durand  Christian Walter 《Agricultural Systems》2010,103(9):647-655

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A theoretical study of discriminating parameters in metabolic resistance to insecticides     

Karine Chalvet-Monfray  Luc P. Belzunces  Pierre Auger 《Pest management science》1998,52(4):354-360

In the case where resistance to an insecticide is associated with increased metabolism of the insecticide, it should not be concluded that the resistance is due only to the increased metabolism (i.e. metabolic hypothesis). Here, we study theoretically the pharmacokinetic consequences of a resistance mechanism due to increased metabolism. We consider two cases: treatment with the initial dose D₀ applied to the susceptible strain and the treatment with the initial dose αD₀, with α>1, applied to the resistant strain. We show the conditions for which the metabolism hypothesis is conceivable. The time τ, from which the mortality of the susceptible strain is significantly higher than that of the resistant strain, is an important parameter in determining the validity of the metabolic hypothesis. The more τ increases, the more the conditions are favourable to this hypothesis. Our work suggests an approach to test the metabolic hypothesis from experimental results. © 1998 SCI  相似文献   

Corky-root symptoms for coffee in central Veracruz are linked to the root-knot nematode Meloidogyne paranaensis,a new report for Mexico     

Daniel Lopez-Lima  Petra Sánchez-Nava  Gloria Carrion  Alejandro Espinosa de los Monteros  Luc Villain 《European journal of plant pathology / European Foundation for Plant Pathology》2015,141(3):623-629

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Tetrodotoxin,an Extremely Potent Marine Neurotoxin: Distribution,Toxicity, Origin and Therapeutical Uses     

Jorge Lago  Laura P. Rodríguez  Lucía Blanco  Juan Manuel Vieites  Ana G. Cabado 《Marine drugs》2015,13(10):6384-6406

Tetrodotoxin (TTX) is a potent neurotoxin responsible for many human intoxications and fatalities each year. The origin of TTX is unknown, but in the pufferfish, it seems to be produced by endosymbiotic bacteria that often seem to be passed down the food chain. The ingestion of contaminated pufferfish, considered the most delicious fish in Japan, is the usual route of toxicity. This neurotoxin, reported as a threat to human health in Asian countries, has spread to the Pacific and Mediterranean, due to the increase of temperature waters worldwide. TTX, for which there is no known antidote, inhibits sodium channel producing heart failure in many cases and consequently death. In Japan, a regulatory limit of 2 mg eq TTX/kg was established, although the restaurant preparation of “fugu” is strictly controlled by law and only chefs qualified are allowed to prepare the fish. Due to its paralysis effect, this neurotoxin could be used in the medical field as an analgesic to treat some cancer pains.  相似文献   

Fucoxanthin and Its Metabolite Fucoxanthinol in Cancer Prevention and Treatment     

Luc J. Martin 《Marine drugs》2015,13(8):4784-4798

Fucoxanthin is a carotenoid present in the chloroplasts of brown seaweeds. When ingested, it is metabolized mainly to fucoxanthinol by digestive enzymes of the gastrointestinal tract. These compounds have been shown to have many beneficial health effects, including anti-mutagenic, anti-diabetic, anti-obesity, anti-inflammatory and anti-neoplastic actions. In every cancer tested, modulatory actions of fucoxanthinol on viability, cell-cycle arrest, apoptosis and members of the NF-κB pathway were more pronounced than that of fucoxanthin. Anti-proliferative and cancer preventing influences of fucoxanthin and fucoxanthinol are mediated through different signalling pathways, including the caspases, Bcl-2 proteins, MAPK, PI3K/Akt, JAK/STAT, AP-1, GADD45, and several other molecules that are involved in cell cycle arrest, apoptosis, anti-angiogenesis or inhibition of metastasis. In this review, we address the mechanisms of action of fucoxanthin and fucoxanthinol according to different types of cancers. Current findings suggest that these compounds could be effective for treatment and/or prevention of cancer development and aggressiveness.  相似文献   

Cross‐resistance risk of the novel complex II inhibitors cyenopyrafen and cyflumetofen in resistant strains of the two‐spotted spider mite Tetranychus urticae     

Mousaalreza Khalighi  Luc Tirry  Thomas Van Leeuwen 《Pest management science》2014,70(3):365-368

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Salinity and organic amendment effects on methane emission from a rain-fed saline paddy field   总被引：1，自引：0，他引：1  

Sakulrat SUPPARATTANAPAN  Patcharee SAENJAN  Cécile QUANTIN  Jean Luc MAEGHT  Olivier GRÜNBERGER 《Soil Science and Plant Nutrition》2009,55(1):142-149

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Efficacy of a 5-day extended therapy program during lactation with cephapirin sodium in dairy cows chronically infected with Staphylococcus aureus     

Jean-Philippe Roy  Luc DesC?teaux  Denis DuTremblay  Francis Beaudry  Johanne Elsener 《The Canadian veterinary journal. La revue veterinaire canadienne》2009,50(12):1257-1262

This study determined the efficacy of a 5-day extended therapy with cephapirin sodium in dairy cows chronically infected with Staphylococcus aureus. Chronically infected cows selected from 14 dairy herds in the St-Hyacinthe region, Québec were randomly allocated to a group of 31 cows treated for 5 consecutive days with 200 mg of cephapirin per quarter BID or a group of 30 untreated control cows. Bacteriological cure was determined by 3 negative bacterial cultures at 10, 24, and 31 days after treatment. The cow cure rates were 25.8% (8/31) in the treated cows and 3.3% (1/30) in the control group (P = 0.013). The quarter cure rates at first sampling post-treatment were 77.6% (38/49) and 18% (9/50) in the treated and the control groups, respectively (P < 0.0001). A 5-day extended therapy with cephapirin is effective in treating cows chronically infected with S. aureus.  相似文献   

Staphylococcus pseudintermedius versus Staphylococcus intermedius     

Devriese LA  Hermans K  Baele M  Haesebrouck F 《Veterinary microbiology》2009,133(1-2):206-207

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