Abstract：
:This study aimed to determine the relative efficacy of the macronutrients, protein, fat and carbohydrate to induce satiation and satiety in rats in relation to macronutrient activation of neurons in the nucleus of the solitary tract (NTS). Male Sprague Dawley rats were schedule-fed twice a day for 2 h, receiving 100% of daily ad-libitum energy intake. On test day 1, 30 min before the first scheduled meal of the day, rats were gavaged with an 8 kcal isocaloric, isovolumetric solution of a glucose, lipid or peptone macronutrient solution or a non-caloric saline solution. To assess satiation, thirty minutes later rats were given access to food for 2 h and food intake determined. A second 2 h food access period 3 h later was used for assessment of satiety. On the second test day, rats were gavaged as before and killed 90 min after food presentation. Blood was collected for measurement of circulating metabolic markers. Brains were removed for analysis of c-Fos expression by in situ hybridization in the NTS. Rats which received saline consumed a similar amount of food compared to pre-gavage intakes. However, rats gavaged with a caloric macronutrient solution all reduced food intake by 18-20 kcal. Interestingly, the reduction in caloric intake was greater than the caloric value of the macronutrient solution gavaged and was sustained following the second scheduled meal. Quantification by in situ hybridization of c-Fos mRNA expression in the NTS 90 min post-gavage, showed a significant increase with each macronutrient, but was 24-29% higher with a lipid or peptone gavage compared to a glucose gavage. In conclusion, when delivered directly to the stomach, all macronutrients can be equally effective in inducing satiation with significant neuronal activation in the NTS of the hindbrain.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Cassie N,Anderson R,Wilson D,Mercer JG,Barrett Pdoi
10.1016/j.physbeh.2019.04.022subject
Has Abstractpub_date
2019-08-01 00:00:00pages
41-47eissn
0031-9384issn
1873-507Xpii
S0031-9384(18)31075-8journal_volume
207pub_type
杂志文章abstract：:Oxidative damage is one of the hallmarks of the aging process. The current study evaluated effects of two proprietary antioxidant-based ingredients, rosemary extract and spearmint extract containing carnosic acid and rosmarinic acid, respectively, on learning and memory in the SAMP8 mouse model of accelerated aging. T...
journal_title：Physiology & behavior
pub_type： 杂志文章
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journal_title：Physiology & behavior
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journal_title：Physiology & behavior
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journal_title：Physiology & behavior
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journal_title：Physiology & behavior
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journal_title：Physiology & behavior
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journal_title：Physiology & behavior
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journal_title：Physiology & behavior
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journal_title：Physiology & behavior
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journal_title：Physiology & behavior
pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2008.07.020
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journal_title：Physiology & behavior
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journal_title：Physiology & behavior
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pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2018.06.035
更新日期：2018-10-01 00:00:00
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journal_title：Physiology & behavior
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：1988-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2016.09.010
更新日期：2016-12-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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