The stimulation of rat brain monoamine oxidase by dietary lithium chloride

Summary Lithium chloride administered to rats in drinking water for 30 days caused an increase of whole brain monoamine oxidase specific activity to approximately 140% of control. Carboxylesterase and formyltetrahydrofolate synthetase activities were not affected by Li⁺ either in vivo or in vitro.Contribution of the Nevada Agricultural Experiment Station (Reno), Journal Series No. 439.     

Heat stress induced enhancement of heat shock protein gene activity in the honey bee (Apis mellifera)

Summary We employed in vitro translation of mRNA and product separation using SDS-PAGE to examine the heat-shock response of the worker honey bee. Increases in the levels of 6 translatable RNA populations were observed following heat stress. The greatest response was observed among bees aged 9 days. Slight levels of induction of 70 and 82 kDa heat shock proteins were evident among bees taken directly from the colony.     

Diketopiperazines from fermentations: Metabolites,artifacts, or both

Zusammenfassung Es wird gezeigt, dass Diketopiperazine, insbesonderel-Leucyl-l-prolin-anhydrid, eher aus dem Medium stammende Artefakte als echte mikrobielle Stoffwechselprodukte sind.     

Effect of ferritin on liver catalase activity

Zusammenfassung Die Katalaseaktivität der Leber wurde nach Einspritzen von Ferritin in normale C₃H/St Mäuse beobachtet. Im Verlauf von sieben Tagen wurden die niedrigsten Katalaseaktivitäten am zweiten und vierten Tag nach Einspritzen des Ferritins festgestellt.     

The dearalkylation of fomocaine isomers by microsomal monooxygenase system of rabbit liver

Zusammenfassung Oxidative Spaltung der Äther-Bindung in Fomocain (Panacain^®) durch das mikrosomale Monooxygenase-System der Kaninchenleber wurde nachgewiesen. Aus der Kinetik dieser Dearylalkylierung wird geschlossen, dass daspara-Isomere eine doppelt so grosse Affinität zum mikrosomalen Enzymsystem besitzt als dasortho-Isomere und doppelt so schnell metabolisiert wird. Die Dearylalkylierung scheint eine allgemeine Biotransformationsreaktion für derartige strukturelle Typen zu sein.     

Unique sex chromosome mediated behavioral response specificity of hybrid male European corn borer moths

Unlike the narrow response windows exhibited by the parent races, hybrid male European corn borers resulting from crosses of the E and Z races respond to a wide range of sex pheromone blends. The F₁ response profile consists of some individuals that respond to both the Z pheromone and the 6535 E/Z blend produced by F₁ females. Some F₁ males fail to respond to any blend and some do not respond as broadly as others. The hybrid male populations, however, are not tuned optimally to the pheromone blend produced by F₁ females and there is no coupling of F₁ blend production and response.     

Immune T cells controlTrypanosoma cruzi infections

Summary Immune but not normal T cells were able fully to restore the ability of thymectomized, irradiated, fetal liver reconstituted B mice to controlTrypanosoma cruzi infections.We are indebed to Dr. A.F. Pestana de Castro for his suggestions.