Induced hyperlipaemia and immune challenge in locusts

Injections of immunogens, such as β-1,3-glucan or lipopolysaccharide (LPS), bring about a marked hyperlipaemia with associated changes in lipophorins and apolipophorin-III in the haemolymph of Locusta migratoria. These changes are similar to those observed after injection of adipokinetic hormone (AKH). The possibility that endogenous AKH is released as part of the response to these immunogens is investigated using passive immunisation against AKH-I, and measurement of AKH-I titre in the haemolymph after injection of immunogens. The data presented show that, despite the similarity of the changes brought about by the presence of immunogens in the haemolymph to those brought about by AKH, there is no release of endogenous AKH after injection of laminarin or LPS. A direct effect of the immunogens on release of neutral lipids by the fat body cannot be demonstrated in vitro, and the mechanism by which hyperlipaemia is induced during immune challenge remains uncertain

The case for transforming the approach to waste, and growing a circular economy; a design perspective.

In recent years, there has been a growing discussion of resource efficiency, the ‘circular economy’ and the economic and environmental benefits of maximising the value of resources beyond the life of a product. This Environmental Audit Committee inquiry was initiated to examine the case for transforming the approach to waste, and growing a 'circular economy'. This is an evidence paper published online at http://www.publications.parliament.uk/pa/cm201415/cmselect/cmenvaud/214/21411.htm A full transcript of the inquiry is available at http://data.parliament.uk/writtenevidence/committeeevidence.svc/evidencedocument/environmental-audit-committee/growing-a-circular-economy/oral/9635.html