Regional structural differences in the neuronal composition of myenteric ganglia along the pig small intestine

被引:0
作者
Brehmer, A
Stach, W
机构
[1] Univ Erlangen Nurnberg, Inst Anat, D-91054 Erlangen, Germany
[2] Univ Rostock, Inst Anat, Rostock, Germany
来源
ANATOMICAL RECORD | 1998年 / 250卷 / 01期
关键词
enteric nervous system; myenteric plexus; morphology; gradient; neuron number; neuron type; silver impregnation;
D O I
10.1002/(SICI)1097-0185(199801)250:1<109::AID-AR11>3.0.CO;2-S
中图分类号
R602 [外科病理学、解剖学]; R32 [人体形态学];
学科分类号
100101 ;
摘要
Background: Data on structural variations in the neuronal composition of myenteric ganglia along the small intestine of various species are scarcely available, The aim of this study was to compare morphologically the ganglia and neurons of different parts of this organ in the pig, Methods: Wholemounts from jejunum and ileum of two 14-week-old pigs were silver impregnated, The number of morphologically defined neuron types I-VI were counted per cm(2). To relate these numbers to the putative whole neuron population, all impregnated neuronal nucleoli were counted in the same areas, Results: Morphologically classifiable, impregnated neurons ranged between 17.9 and 23.1% of the putative whole population as determined by neuronal nucleoli counting, The proportions of type I neurons (jejunum, 22-25%; ileum, 19%) and type II neurons (jejunum, 30%; ileum, 37%) were considerable in both segments, The proportion of type III neurons was about 30% in jejunum and 2% in ileum whereas the percentages of type IV (jejunum, 10%; ileum, 18%), type V (jejunum, 2%; ileum, 12%) and type VI neurons (jejunum, 3%; ileum, 11%) were higher in the ileum, All differences between jejunal and ileal percentages were significant as determined by chi square test. Conclusions: Ganglia from the upper jejunum and the lower ileum reveal distinct differences in terms of neuron type composition, We suggest that these morphological differences reflect well known functional differences, e.g. in terms of motility, between different parts of the small intestine, (C) 1998 Wiley-Liss, Inc.
引用
收藏
页码:109 / 116
页数:8
相关论文
共 52 条
[1]   Functional variations in contractions of different parts of the small intestine [J].
Alvarez, WC .
AMERICAN JOURNAL OF PHYSIOLOGY, 1914, 35 (02) :177-193
[2]   AUERBACHS PLEXUS OF MAMMALS AND MAN - ELECTRON MICROSCOPIC IDENTIFICATION OF 3 DIFFERENT TYPES OF NEURONAL PROCESSES IN MYENTERIC GANGLIA OF LARGE INTESTINE FROM RHESUS MONKEYS, GUINEA-PIGS AND MAN [J].
BAUMGART.HG ;
HOLSTEIN, AF ;
OWMAN, C .
ZEITSCHRIFT FUR ZELLFORSCHUNG UND MIKROSKOPISCHE ANATOMIE, 1970, 106 (03) :376-+
[3]  
Brehmer A, 1997, CELL TISSUE RES, V287, P127
[4]  
Brehmer A, 1996, J AUTONOM NERV SYST, V61, P43
[5]  
Brown A., 1991, NERVE CELLS NERVOUS
[6]  
Bustad LK, 1966, SWINE BIOMEDICAL RES
[8]  
CHRISTEN.J, 1966, GASTROENTEROLOGY, V50, P309
[9]  
CHRISTENSEN J, 1983, GASTROENTEROLOGY, V85, P890
[10]   ULTRASTRUCTURE OF AUERBACHS PLEXUS IN GUINEA-PIG .1. NEURONAL ELEMENTS [J].
COOK, RD ;
BURNSTOCK, G .
JOURNAL OF NEUROCYTOLOGY, 1976, 5 (02) :171-194