Sucrose-conditioned flavor preferences in sweet ageusic T1r3 and Calhm1 knockout mice
نویسندگان
چکیده
منابع مشابه
Role of olfaction in the conditioned sucrose preference of sweet-ageusic T1R3 knockout mice.
Prior work has shown that sweet taste-deficient T1R3 knockout (KO) mice developed significant sucrose preferences when given long-term sugar versus water tests. The current study investigated the role of olfaction in this experience-conditioned sucrose preference. T1R3 KO and C57BL/6 wild-type (WT) mice were given 24-h sugar versus water tests with ascending concentrations of sucrose (0.5-32%),...
متن کاملGut T1R3 sweet taste receptors do not mediate sucrose-conditioned flavor preferences in mice.
Most mammals prefer the sweet taste of sugars, which is mediated by the heterodimeric T1R2+T1R3 taste receptor. Sugar appetite is also enhanced by the post-oral reinforcing actions of the nutrient in the gut. Here, we examined the contribution of gut T1R3 (either alone or as part of the T1R3+T1R3 receptor) to post-oral sugar reinforcement using a flavor-conditioning paradigm. We trained mice to...
متن کاملSalty taste deficits in CALHM1 knockout mice.
Genetic ablation of calcium homeostasis modulator 1 (CALHM1), which releases adenosine triphosphate from Type 2 taste cells, severely compromises the behavioral and electrophysiological responses to tastes detected by G protein-coupled receptors, such as sweet and bitter. However, the contribution of CALHM1 to salty taste perception is less clear. Here, we evaluated several salty taste-related ...
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The prototypic umami substance monosodium glutamate (MSG) reinforces preferences for its own flavor, as well as preferences for flavors associated with it, by conditioning processes. Mice of 3 inbred strains (C57BL/6J (B6), 129P3/J, and FVB/NJ) and 2 taste-knockout (KO) groups derived from the B6 lineage were initially indifferent to 200mM MSG, but this evaluation was altered by forced exposure...
متن کاملSucrose and monosodium glutamate taste thresholds and discrimination ability of T1R3 knockout mice.
Molecular and behavioral studies have identified heterodimers of the T1R family as receptors for detecting the tastes of sweet (T1R2 + T1R3) and umami (T1R1 + T1R3). However, behavioral studies have reported conflicting findings with T1R3 knockout (KO) mice. One study showed a complete or nearly complete loss of preference for sweet and umami substances by KO mice, whereas KO mice in another st...
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ژورنال
عنوان ژورنال: Physiology & Behavior
سال: 2014
ISSN: 0031-9384
DOI: 10.1016/j.physbeh.2013.12.003