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The biosynthesis and endocrine regulation of sex pheromone production in the female German cockroach (Blattella germanica) were determined. Radio-TLC and radio-GLC were used to demonstrate the metabolism of 3,11-dimethylnonacosane, a major cuticular lipid component, to the corresponding alkan-2-ol and methyl ketone. [11,12-3H2]-3,11-Dimethylnonacosan-2-ol(More)
Large amounts of hydrocarbons accumulate during vitellogenesis in the developing basal oocytes of the German cockroach Blattella germanica (L.), and all ovarian hydrocarbons are deposited into an egg case (ootheca) during oviposition. Hydrocarbons are not synthesized by the ovaries, but are delivered by hemolymph lipoproteins and accumulate within the basal(More)
Smooth muscle cell (SMC) proliferation is an important component of restenosis in response to injury after balloon angioplasty. Inhibition of proliferation in vivo can limit neointima hyperplasia in animal models of restenosis. Ribozymes against c-myb mRNA have been shown to be effective inhibitors of SMC proliferation in vitro. The effectiveness of(More)
The structural relationships between the cuticular hydrocarbons and the contact sex pheromone of the female German cockroach,Blattella germanica, were investigated. Cuticular hexane extracts were separated into hydrocarbon and ketone fractions by TLC or silicic acid column chromatography. The ketone fraction (which contains the major contact sex pheromone(More)
Methyl-branched fatty acids present in the integument of the German cockroach, Blattella germanica, were identified by gas chromatography-mass spectrometry of their methyl esters and reduction products (alkanes) as n-3-, n-4-, n-5-, n-7-, n-8-, and n-9-monomethyl fatty acids and as n-5,9-, n-3,9-, and n-3,11-dimethyl fatty acids with 16 to 20 total carbons.(More)
Data from physical and genetic mapping studies show that the vegetative genome of the temperate, Group E 1 Salmonella bacteriophage, ε15, is circularly-permuted. Preliminary evidence suggests that the circular permutation of the ε15 genome is non-random.
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