169 research outputs found
The 18 kDa Translocator Protein (Peripheral Benzodiazepine Receptor) Expression in the Bone of Normal, Osteoprotegerin or Low Calcium Diet Treated Mice
The presence of the translocator protein (TSPO), previously named as the mitochondrial or peripheral benzodiazepine receptor, in bone cells was studied in vitro and in situ using RT-qPCR, and receptor autoradiography using the selective TSPO ligand PK11195
The Influence of Coastal Access on Isotope Variation in Icelandic Arctic Foxes
To quantify the ecological effects of predator populations, it is important to evaluate how population-level specializations are dictated by intra- versus inter-individual dietary variation. Coastal habitats contain prey from the terrestrial biome, the marine biome and prey confined to the coastal region. Such habitats have therefore been suggested to better support predator populations compared to habitats without coastal access. We used stable isotope data on a small generalist predator, the arctic fox, to infer dietary strategies between adult and juvenile individuals with and without coastal access on Iceland. Our results suggest that foxes in coastal habitats exhibited a broader isotope niche breadth compared to foxes in inland habitats. This broader niche was related to a greater diversity of individual strategies rather than to a uniform increase in individual niche breadth or by individuals retaining their specialization but increasing their niche differentiation. Juveniles in coastal habitats exhibited a narrower isotope niche breadth compared to both adults and juveniles in inland habitats, and juveniles in inland habitats inhabited a lower proportion of their total isotope niche compared to adults and juveniles from coastal habitats. Juveniles in both habitats exhibited lower intra-individual variation compared to adults. Based on these results, we suggest that foxes in both habitats were highly selective with respect to the resources they used to feed offspring, but that foxes in coastal habitats preferentially utilized marine resources for this purpose. We stress that coastal habitats should be regarded as high priority areas for conservation of generalist predators as they appear to offer a wide variety of dietary options that allow for greater flexibility in dietary strategies
Ligands of the peripheral benzodiazepine receptor induce apoptosis and cell cycle arrest in oesophageal cancer cells: involvement of the p38MAPK signalling pathway
Evidence that the Peripheral Benzodiazepine Receptor Ligand Ro 5 4864 Inhibits ?-Endorphin Release from AtT-20 Cells by Interacting with Voltage-Dependent Calcium Channels
Detection and properties of benzodiazepine receptors of glial and neuronal fractions of the human cerebral cortex
Effect of Various Centrally Acting Drugs on the Efflux of Dopamine Metabolites from the Rat Brain
The influence of chlorpromazine, haloperidol, morphine, chloral hydrate, γ‐butyrolactone, probenecid, kainic acid, oxotremorine, pargyline, yohimbine, (+)‐amphetamine, and cocaine on the efflux rate of 3,4‐dihydroxyphenylacetic acid (DOPAC) from four brain areas was studied. All drugs studied except pargyline and morphine had an effect on the transport of DOPAC and homovanillic acid (HVA) from the brain. Nine drugs inhibited the efflux of DOPAC and HVA, whereas (+)‐amphetamine stimulated this transport. These data suggest that most centrally acting drugs can interfere with the elimination of 3,4‐dihydroxyphenylethylamine (DA or dopamine) metabolites from the brain. These effects are heterogeneously distributed throughout the brain and are probably related to indirect nonspecific drug effects. This implies that drug‐induced changes in DA metabolite concentrations, especially when these changes are slight to moderate, cannot directly be translated to changes in the production rate of these metabolites. By studying five control groups, we concluded that formation and transport of DOPAC are not synchronized in the various brain area
Effect of Various Centrally Acting Drugs on the Efflux of Dopamine Metabolites from the Rat Brain
(R)-N-[4,4-Bis(3-Methyl-2-Thienyl)but-3-en-1-yl]Nipecotic Acid Binds with High Affinity to the Brain ?-Aminobutyric Acid Uptake Carrier
Benzodiazepine Receptors in Rat Brain: Action of Triton X-100 and Localization in Relation to the Synaptic Region
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