CHORDA TYMPANI SECTION DECREASES THE CATION SPECIFICITY OF DEPLETION-INDUCED SODIUM APPETITE IN RATS

被引:63
作者
BRESLIN, PAS
SPECTOR, AC
GRILL, HJ
机构
[1] UNIV PENN,DEPT PSYCHOL,PHILADELPHIA,PA 19104
[2] UNIV FLORIDA,DEPT PSYCHOL,GAINESVILLE,FL 32611
来源
AMERICAN JOURNAL OF PHYSIOLOGY | 1993年 / 264卷 / 02期
关键词
SODIUM PREFERENCE; LICK RATE; CATION SELECTIVITY; ANTERIOR LINGUAL RECEPTOR FIELD; FUROSEMIDE;
D O I
10.1152/ajpregu.1993.264.2.R319
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
Rats depleted of sodium by diuretic treatment were tested for their ability to respond selectively to NaCl after chorda tympani nerve (CTn) section (CTX). A variety of chloride salts (NaCl, KCl, NH4Cl, CaCl2) at two concentrations (0.05 and 0.3 M) were presented semirandomly to sodium-deplete rats in repeated single-stimulus trials (10 s). The responses of sodium-depleted surgical control rats (n = 8) were highly cation specific. These rats licked substantially more for both sodium stimuli than for any other chloride salt. On the other hand, the licking responses of CTX sodium-depleted rats (n = 8) were less cation selective. These rats licked NaCl and 0.05 M KCL at comparable rates. For both NaCl concentrations, CTX rats had significantly lower lick rates than controls. In addition, the difference between the lick rate for NaCl and that for the other salts was much greater for control rats than for CTX rats. Although CTn section did not entirely eliminate the high levels of responsivity to NaCl observed in the intact sodium-depleted rat, it did substantially compromise the selectivity of the behavior, which suggests that the input of the CTn is critical for taste-guided sodium specific behaviors.
引用
收藏
页码:R319 / R323
页数:5
相关论文
共 38 条
[1]  
Akaike N, 1965, Kumamoto Med J, V18, P108
[2]   AMILORIDE-SENSITIVE SODIUM-CHANNELS AND EXPRESSION OF SODIUM APPETITE IN RATS [J].
BERNSTEIN, IL ;
HENNESSY, CJ .
AMERICAN JOURNAL OF PHYSIOLOGY, 1987, 253 (02) :R371-R374
[3]   NEUROPHYSIOLOGY OF GENICULATE GANGLION (FACIAL-NERVE) TASTE SYSTEMS - SPECIES COMPARISONS [J].
BOUDREAU, JC ;
SIVAKUMAR, L ;
DO, LT ;
WHITE, TD ;
ORAVEC, J ;
HOANG, NK .
CHEMICAL SENSES, 1985, 10 (01) :89-127
[4]   RAT NEUROPHYSIOLOGICAL TASTE RESPONSES TO SALT-SOLUTIONS [J].
BOUDREAU, JC ;
HOANG, NK ;
ORAVEC, J ;
DO, LT .
CHEMICAL SENSES, 1983, 8 (02) :131-150
[5]   TASTE SYSTEMS OF THE PETROSAL GANGLION OF THE RAT GLOSSOPHARYNGEAL NERVE [J].
BOUDREAU, JC ;
DO, LT ;
SIVAKUMAR, L ;
ORAVEC, J ;
RODRIGUEZ, CA .
CHEMICAL SENSES, 1987, 12 (03) :437-458
[6]   TASTE DETECTION AND DISCRIMINATION PERFORMANCE OF RATS FOLLOWING SELECTIVE DESALIVATION [J].
BROSVIC, GM ;
HOEY, NE .
PHYSIOLOGY & BEHAVIOR, 1990, 48 (05) :617-623
[7]   ACTIVITY IN SALT TASTE FIBERS - PERIPHERAL MECHANISM FOR MEDIATING CHANGES IN SALT INTAKE [J].
CONTRERAS, RJ ;
KOSTEN, T ;
FRANK, ME .
CHEMICAL SENSES, 1984, 8 (03) :275-288
[8]   SODIUM DEPRIVATION ALTERS NEURAL RESPONSES TO GUSTATORY STIMULI [J].
CONTRERAS, RJ ;
FRANK, M .
JOURNAL OF GENERAL PHYSIOLOGY, 1979, 73 (05) :569-594
[9]  
Denton D., 1984, HUNGER SALT ANTHR PH, V1st
[10]   SPECIFIC APPETITE FOR NACL WITHOUT POSTINGESTIONAL REPLETION [J].
FALK, JL ;
HERMAN, TS .
JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY, 1961, 54 (04) :405-&