As ecosystem engineers,earthworms play a key role in the soil ***,due to increasing anthropogenic pressure,soil organisms,including earthworms,are being threatened by habitat *** this study,we undertook a qualitative ...
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As ecosystem engineers,earthworms play a key role in the soil ***,due to increasing anthropogenic pressure,soil organisms,including earthworms,are being threatened by habitat *** this study,we undertook a qualitative and quantitative investigation of earthworms of the family Lumbricidae in four types of Carpathian beech woodland(Fagetum carpaticum),characterized by their understory vegetation(I,*** drymejae;Ⅱ,***;Ⅲ,***;and IV,***),in the Bieszczady National Park(Eastern Carpathians,Southeast Poland).At each investigated site,soil monoliths(25 cm×25 cm×25 cm)were examined by hand *** were expelled from deep soil layers using a weak formalin solution(0.4%).Depending on the phytocoenosis,7 species of Lumbricidae were identified at each of the sites I,Ⅱ,andⅢand 10 at site *** IV(***)differed significantly(P<0.05)from the other three sites with respect to earthworm biomass(59.71±39.53 g m^(-2))and the Shannon-Wiener diversity index(0.52±0.12).Although present three decades ago,the deep-burrowing species Octodrilus transpadanus and the litter-dwelling species Dendrobaena octaedra were not found at site IV in the present *** suspect that these two species may have been displaced by the invasive Lumbricus terrestris,which was not found at the same site in the *** observations warrant further investigation to verify the predicted effects of an invasive earthworm,including the potential effects on soils and other fauna and flora,which have been documented in numerous countries.
Alternative therapies are necessary for the treatment of malaria due to emerging drug ***,many promising antimalarial compounds have poor water solubility and suffer from the lack of suitable delivery systems,which se...
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Alternative therapies are necessary for the treatment of malaria due to emerging drug ***,many promising antimalarial compounds have poor water solubility and suffer from the lack of suitable delivery systems,which seriously limits their *** address this problem,we synthesized a series of azacarbazoles that were evaluated for antimalarial activity against D10(chloroquine-sensitive)and W2(chloroquine-resistant)strains of *** most active compound,9H-3-azacarbazole(3),was encapsulated in a novel o/w nanoemulsion consisting of ethyl esters of polyunsaturated fatty acids n-3 and n-6 obtained from flax oil as the oil phase,Smix(Tween 80 and Transcutol HP)and *** formulation was further analyzed using transmission electron microscopy,dynamic light scattering and in vitro and in vivo *** was shown that droplets of the 3-loaded nanosystem were spherical,with satisfactory stability,without cytotoxicity towards fibroblasts and intestinal cell lines at concentrations corresponding to twice the IC50 for ***,the nanoemulsion with this type of oil phase was internalized by Caco-2 ***,pharmacokinetics demonstrated rapid absorption of compound 3(tmax=5.0 min)after intragastric administration of 3-encapsulated nanoemulsion at a dose of 0.02 mg/kg in mice,with penetration of compound 3 to deep *** 3-encapsulated nanoemulsion was found to be 2.8 and 4.2 times more effective in inhibiting the D10 and W2 strains of the parasite,respectively,compared to non-encapsulated *** findings support a role for novel o/w nanoemulsions as delivery vehicles for antimalarial drugs.
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