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Tryptophan-related Neurotransmission in the Brain: Disturbances Associated with Experimental Hepatic Encephalopathy

Popular Abstract in Swedish Tryptofan (TRP) är en s.k. essentiell aminosyra d.v.s. den kan inte syntetiseras av kroppen utan måste intas med födan. TRP ingår bl.a. som byggsten i kroppens proteiner men TRP används även som substrat för bildningen av signalsubstansen serotonin (även kallad 5-hydroxytryptamin; 5-HT). Dessutom kan TRP användas för bildningen av de för kroppen livsviktiga molekylerna In the present study, L-tryptophan (TRP)-related disturbances in the brain in experimental hepatic encephalopathy (HE) were investigated. The endogenous NMDA-receptor agonist and L-TRP metabolite quinolinic acid (QUIN) has been suggested to be involved in the pathogenesis of HE. We were, however, unable to detect any increases in QUIN levels in rats subjected to a chronic portacaval shunt (PCS) ei

Memory-Aware Feedback Scheduling of Control Tasks

This paper presents the incorporation of an auto-tuning real-time garbage collector into a feedback-based on-line scheduling system. The studied feedback scheduler is designed to dynamically adjust the sampling periods of a set of controller tasks in order to maximize the overall control performance. In the suggested approach, the memory management overhead is made explicit and taken into account

Konsten att hylla en polyglott. Mångspråkighet och språkpatriotism i ljuset av ett brev.

"In what language would one polyglot praise another? Multilingualism and linguistic patriotism in the light of a letter and a poem from Magnus Gabriel Block to Sophia Elisabeth Brenner." In the late 17th and the early 18th centuries, there was a dialectic relation between the increasing national concern for the native language on one hand, and the international multilingual culture where Latin was

Studies on the Load Range of an HCCI Engine using In-Cylinder Pressure, Ion Current and Optical Diagnostics

Internal combustion engines are continuously developed towards decreased hazardous emissions and lower fuel consumption. The homogeneous charge compression ignition (HCCI) engine is a promising concept which combines the best features of the Diesel engine and the spark ignition (SI) engine. The efficiency is in the range of the Diesel engine and the emissions are low and comparable to the emission

Alternativ till ekonomismen?

I föreliggande rapport återges de föredrag som hölls vid symposiet Alternativ till ekonomismen?, vilket anordnades vid Sociologiska institutionen våren 1997. Lars Ingelstam, professor vid Linköpings universitet, riktar i sin text skarp kritik mot ekonomismen – i synnerhet när den framträder som politik. Joachim Israel, tidigare professor vid Lunds universitet, gör en sociologisk analys av ekonomi

Regulation of Injury Induced Schwann Cell Proliferation Schwann Cell Proliferation

The purpose of this study was to investigate injury induced proliferation of Schwann cells with emphasis of the effects of the insulin-like growth factors (IGF-I and IGF-II) and the sex hormones progesterone and estrogen. Proliferation, measured as [3H] thymidine incorporation, was studied in cultured segments of the rat sciatic nerve or through the use of the thymidine analogue bromo- deoxy-uridi

Villa 69

I en villa vid Nilen har arkitekten Hussein avskärmat sig från världen. Hussein som är en antagonist av den gamla skolan, orädd för att uttrycka sig, har sett hur hans värld sakta förfaller. Kvar i sitt hem, balanserar han vardagen i sällskap med ett gäng excentriker samtidigt som han döljer sin sjukdom. Utan att inse hinner dock Husseins förflutna ikapp, honom när hans syster och hennes barnbarn