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Brain histamine plays a regulatory role in feeding behaviour, acting as an inhibitory modulator. Portocaval anastomosis (PCA) is associated with cerebral aminergic systems alterations, including high histamine accumulation and release from neurons. Despite that, the rats with PCA eat significantly more, their body mass being lower than sham-operated animals. To disclose underlying regulatory mechanisms,...
Background: Rats with liver cirrhosis, evoked by chronic administration of thioacetamide (TAA), consumed voluntarily more alcohol than their healthy counterparts. Seeking the mechanisms underlying this phenomenon, the opioid system was screened for involvement and alterations. In vivo, the influence of chronically administered Naloxone and Naltrexone, non-specific opioid receptor antagonists, on alcohol...
A total of over 550 samples of particulate organic matter (POM) were obtained from swash and groundwater samples taken on a monthly basis from seven localities on the sandy shores of Puck Bay in 2002 and 2003. Sandy sediment cores from the swash zone were collected to assess the amount of POM in the pore waters. The mean annual concentrations of POM varied between localities from 20 to 500 mg in groundwater...
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