Mice lacking both the P2X2 and the P2X3 purinergic receptors (P2X-dblKO) exhibit loss of responses to all taste qualities in the taste nerves innervating the tongue. Similarly, these mice exhibit a near total loss of taste-related behaviors in brief access tests except for a near-normal avoidance of acidic stimuli. This persistent avoidance of acids despite the loss of gustatory neural response...

The amygdala and hippocampus play crucial roles in the latent inhibition of different conditioned responses, such as fear conditioned. Nevertheless, the involvement of these structures in the latent inhibition of conditioned taste aversion (CTA) is uncertain. In the present study, we explore the relevance of the amygdala and hippocampus in latent inhibition using a CTA paradigm. The effects of ...

There are several methods available in measuring food taste. The sensory evaluation, for instance, is a typical method for panels to test of taste and recognize smell with their nose by measuring the degree of taste characteristic, intensity, and pleasure. There are many issues entailed in the traditional sensory evaluation method such as forming a panel and evaluation cost; moreover, it is onl...

Taste stimuli encountered in the natural environment are usually combinations of multiple tastants. Although a great deal is known about how neurons in the taste system respond to single taste stimuli in isolation, less is known about how the brain deals with such mixture stimuli. Here, we probe the responses of single neurons in primary gustatory cortex (GC) of awake rats to an array of taste ...

Aside from motor and cognitive deficits, Parkinson patients also manifest a little-studied olfactory deficit. Since in Parkinson's disease there is a dopamine depletion of the amygdala due to mesocorticolimbic system degeneration, we decided to test olfactory and taste performance of 6-OHDA amygdala lesioned rats, as well as the possible restoration of either function with adrenal medullary tra...

Taste receptor cells are replaced with an average life span of ~10 days in mammals. This turnover is accompanied by continuing synaptic reconnection between newly formed taste cells and gustatory fibers. However, little is known of how sensory information of the fibers is maintained during the synaptic reconnection. Our previous study examined taste responses of regenerated mouse chorda tympani...

Changes in the taste of food have been implicated as a potential cause of reduced dietary intake among cancer patients. However, data on intensity and hedonic responses to the four basic tastes in cancer are scanty and contradictory. The present study aimed at evaluating taste intensity and hedonic responses to simple beverages in 47 anorectic patients affected by gastrointestinal cancer and in...

Two-bottle tests have been used extensively to measure the preference for taste and nutrient solutions but there has been little work with tests involving more than two bottles. Here, we compare the results obtained in two-bottle tests with those obtained in three- and six-bottle tests. In Experiment 1, we measured the preferences for 2 mM saccharin, 50 mM citric acid, 0.3 mM quinine hydrochlor...

BACKGROUND/AIMS Taste perception is one of the most important primary oral reinforcers, driving nutrient and energy intake as well as toxin avoidance. Taste receptors in the gastrointestinal tract might as well impact appetitive or aversive behavior and thus influence learning tasks and a close relation of neural taste processing and working memory networks seems plausible. METHODS In the pre...

Introduction: Cancer is a global health problem. Taste change is one of the most common symptoms in cancer patients undergoing chemotherapy. Cancer patients often use Complementary and Integrative Medicine (CIM) to manage chemotherapy complications. Objective: This study aimed to evaluate CIM used by cancer patients to cope with chemotherapy-related taste alterations. Materials and Methods: T...