INTERACTION BETWEEN OROSENSORY AND POSTINGESTIONAL STIMULATION IN THE CONTROL OF CORN-OIL INTAKE BY RATS
INTERACTION BETWEEN OROSENSORY AND POSTINGESTIONAL STIMULATION IN THE CONTROL OF CORN-OIL INTAKE BY RATS
复制标题
DOI：
10.1016/0031-9384(95)00008-7
复制
发表时间：
1995-06-01
影响因子：
2.9
通讯作者：
ROSENAK, R
中科院分区：
文献类型：
--
作者：
DAVIS, JD;KUNG, TM;ROSENAK, R
通过对大鼠摄入玉米油乳剂后摄食行为的微观结构分析，定量描述了摄食后刺激与口腔感觉刺激如何相互作用以控制玉米油的摄入。17小时的食物剥夺大鼠给予30分钟的访问摄入测试与玉米油乳剂的浓度范围从0.125%至64%。在此浓度范围内，摄入量呈倒U形函数。拟合舔体速率函数的威布尔函数表明，初始舔体速率是玉米油浓度对数的线性递增函数。舔食率函数的斜率是玉米油浓度对数的递增曲线函数。总之，这些结果表明，玉米油在胃肠道中的负反馈效应在较高浓度的玉米油下比其口腔感觉刺激效应增加得更快，导致摄入量减少。与碳水化合物不同，舔的初始速率的增加是簇的大小增加的结果，随着浓度的增加，玉米油的初始速率的增加是由簇的数量增加而不是它们的大小引起的。这项研究提供了一个定量分析orosensory和postingestational刺激，两个变量，在控制摄入玉米油之间的相互作用。
The microstructure of the ingestive behavior of rats ingesting corn oil emulsions was analyzed to describe quantitatively how postingestional stimulation interacts with orosensory stimulation to control the intake of corn oil. Seventeen hour food deprived rats were given 30-min access intake tests with corn oil emulsions ranging in concentration from 0.125% to 64%. The volume ingested showed an inverted U shaped function over this concentration range. The Weibull function fitted to the rate of licking function showed that the initial rate of licking was an increasing linear function of the log of the concentration of corn oil. The slope of the licking rate function was an increasing curvilinear function of the log of corn oil concentration. Together these results indicate that the negative feedback effect of corn oil in the gastrointestinal tract increases more rapidly at the higher concentrations of corn oil than does its orosensory stimulating effect resulting in a decrease in the volume ingested. Unlike carbohydrates, where the increase in the initial rate of licking is a result of an increase in the size of the clusters, the increase with concentration in the initial rate of ingesting corn oil was caused by an increase in the number of clusters rather than their size. This study provides a quantitative analysis of the interaction between orosensory and postingestional stimulation, two variables that play an important role in the control of ingestion of corn oil.