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Odorant deposition in the nasal and olfactory mucosas is dependent on a number of factors including local air/odorant flow distribution patterns, odorant mucosal solubility and odorant diffusive transport in the mucosa. Although many of these factors are difficult to measure, mucosal solubility...
The nerve-dependency of gene expression in mouse taste bud was examined through an analysis of changes in gene expression in and around the taste buds in circumvallate papillae after surgery of cranial nerve IXth (glossopharyngeal nerve). The number of cells expressing T1r3 , gustducin , Mash1...
Mice of the SWR/J (SW) strain avoid orally delivered sucrose octa-acetate (SOA), whereas the mice of the C3HeB/FeJ (C3) strain are insensitive to SOA. Mice of both strains and of a congenic strain (C3.SW) that shares more than 99% of the C3 genome, were tested in a taste-salient brief-access...
Dehydrated toads absorb water by pressing a specialized (seat patch) area of the skin to moist surfaces. This behavior, the water absorption response (WR), is preceded by periods of more limited skin contact (seat patch down, SPD) in which the suitability of the rehydration source is evaluated....
Chemosensory communication of anxiety is a common phenomenon in vertebrates and improves perceptual and responsive behaviour in the perceiver in order to optimize ontogenetic survival. A few rating studies reported a similar phenomenon in humans. Here, we investigated whether subliminal face...
Recent research has implicated T1R1/T1R3 as the primary taste receptor in mammals for detecting l -amino acids, including l -monosodium glutamate (MSG) and l -alanine. Previous behavioral studies with rodents found only minimal evidence that these two substances share perceptual qualities, but...
Different odorants are recognized by different combinations of G protein-coupled olfactory receptors, and thereby, odor identity is determined by a combinatorial receptor code for each odorant. We recently demonstrated that odorants appeared to compete for receptor sites to act as an agonist or...
In long-term two-bottle tests, mice from the C57BL/6ByJ (B6) strain drink more monosodium l -glutamate (MSG) and inosine-5′-monophosphate (IMP) compared with mice from the 129P3/J (129) strain. The goal of this study was to assess the role of afferent gustatory input in these strain...
Social behaviors of most mammals are affected by chemical signals, pheromones, exchanged between conspecifics. Previous experiments have shown that behavioral responses to the same pheromone differ depending on the sex and endocrine status of the respondent. Although the exact mechanism of this...
The role of short-chain fatty acids in the host-seeking behaviour of Triatoma infestans larvae was investigated using a locomotion compensator. Several short-chain fatty acids were tested alone over a wide range of doses, or in combination with l -lactic acid ( l -LA; 100 µg). Bugs showed no...
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