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Página 1 a partir de 24 resultados
The major excretory/secretory protease from Lucilia cuprina larvae is also a gut digestive protease.
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The larvae of the fly Lucilia cuprina excrete or secrete a chymotrypsia (LCTb) onto the skin of sheep to facilitate the establishment of the larval infestation. A combination of immunoblotting and RT-PCR approaches has established that this protease is also a gut digestive protease. LCTb is
Characterisation of proteases involved in egg hatching of the sheep blowfly, Lucilia cuprina.
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A number of proteases were identified in the egg shell washings (ESW) collected during the egg hatching of Lucilia cuprina (sheep blowfly). Characterization of these proteases indicated a pH optima in a similar pH range that was optimal for L. cuprina egg hatching. Mechanistic characterization of
An estimate of the number of serine protease genes expressed in sheep blowfly larvae (Lucilia cuprina).
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A large and diverse family of serine protease genes was identified in first-instar larval cDNA of the sheep blowfly (Lucilia cuprina). This complex repertoire of genes was identified via a PCR approach using highly degenerate primers based on structurally conserved regions which surround the active
Vaccination of sheep with purified serine proteases from the secretory and excretory material of Lucilia cuprina larvae.
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Sheep were vaccinated with two purified serine proteases, LCT25a and LCT25b, isolated from the secretory and excretory material from first instar larvae of Lucilia cuprina. The immunization produced a strong antibody response to LCT25b and a weaker response to LCT25a as measured by ELISA. However,
Maggot excretion products from the blowfly Lucilia sericata contain contact phase/intrinsic pathway-like proteases with procoagulant functions.
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For centuries, maggots have been used for the treatment of wounds by a variety of ancient cultures, as part of their traditional medicine. With increasing appearance of antimicrobial resistance and in association with diabetic ulcers, maggot therapy was revisited in the 1980s. Three mechanisms by
Isolation of a trypsin-like serine protease gene family from the sheep blowfly Lucilia cuprina.
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Various protease inhibitors active against both trypsin- and chymotrypsin-like serine proteases were used to characterize gut proteases from Lucilia cuprina by in vitro feeding assays. Significant larval growth retardation was observed on feeding first-instar larvae with trypsin inhibitors,
Tryptic and chymotryptic proteases released by larvae of the blowfly, Lucilia cuprina.
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Proteases released by larvae of the sheep blowfly have been suggested to have a primary role in wound formation and larval nutrition. Assays were carried out on two larval products to analyse the substrate specificity of these proteases, their abundance and approximate molecular weights. Tryptic and
Sheep plasma protease inhibitors influencing protease activity and growth of Lucilia cuprina larvae in vitro.
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The enzyme inhibitors alpha 2-macroglobulin (alpha 2M), anti-thrombin III (AT III) and alpha 1-proteinase inhibitor (alpha 1PI) were isolated from sheep plasma and tested for their ability to affect L. cuprina larval proteases and larval growth in vitro. Casein radial diffusion gels indicated that
The impacts of larval density and protease inhibition on feeding in medicinal larvae of the greenbottle fly Lucilia sericata.
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Larval therapy, the therapeutic use of blowfly larvae to treat chronic wounds, is primarily used in debridement. There are, however, gaps in current knowledge of the optimal clinical application of the therapy and mechanisms of action in the debridement process. Using an artificial assay, two
Maggot chymotrypsin I from Lucilia sericata is resistant to endogenous wound protease inhibitors.
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BACKGROUND
A chymotrypsin found in the secretions of Lucilia sericata and manufactured as a recombinant enzyme degrades chronic wound eschar ex vivo.
OBJECTIVE
To characterize the inhibition profile of the L. sericata recombinant chymotrypsin I.
METHODS
Activity of recombinant chymotrypsin I and its
Detection of serine proteases secreted by Lucilia sericata in vitro and during treatment of a chronic leg ulcer.
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A Jonah-like chymotrypsin from the therapeutic maggot Lucilia sericata plays a role in wound debridement and coagulation.
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Lucilia sericata larvae are used in maggot debridement therapy, a traditional wound healing approach that has recently been approved for the treatment of chronic wounds. Maggot excretion products (MEP) contain many different proteases that promote disinfection, debridement and the acceleration of
Excretions/secretions from medicinal larvae (Lucilia sericata) inhibit complement activation by two mechanisms.
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Larvae of the blowfly Lucilia sericata facilitate wound healing by removing dead tissue and biofilms from non-healing and necrotic wounds. Another beneficial action of larvae and their excretions/secretions (ES) is down-regulation of excessive inflammation. As prolonged complement activation is key
Vaccination against Lucilia cuprina: the causative agent of sheep blowfly strike.
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The sheep blowfly, Lucilia cuprina, is responsible for over 80% of cases of blowfly strike in Australia and the losses in production and sheep deaths due to flystrike exceed $200 million per annum. Traditional methods of control are becoming less effective because of the blowfly's resistance to
The exon-intron organization of the prohormone convertase PC2 gene from the insect Lucilia cuprina.
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Prohormone or proprotein convertases are members of the subtilisin family of serine proteases. They are involved in the activation of precursor molecules by endoproteolytic cleavage at basic amino acid residues. Among the different members of this prohormone convertase family, the prohormone
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