GABAergic synaptic connections in mushroom bodies of insect brains

被引:11
作者
Schuermann, F.-W. [1 ]
Frambach, Ina [1 ]
Elekes, K. [2 ]
机构
[1] Univ Gottingen, Inst Zool Anthropol & Entwicklungsbiol, D-37073 Gottingen, Germany
[2] Hungarian Acad Sci, Balaton Limnol Res Inst, Dept Expt Zool, H-8237 Tihany, Hungary
来源
ACTA BIOLOGICA HUNGARICA | 2008年 / 59卷 / Suppl 2期
关键词
insects; mushroom bodies; GABA; immunocytochemistry; synapses;
D O I
10.1556/ABiol.59.2008.Suppl.26
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Distribution and synaptic connections of GABA fibres in neuropil parts of the mushroom bodies in brains of crickets (Gryllus bimaculatus) and bees (Apis mellifera) were investigated by immuno-light and electron microscopy. In the inner calyx neuropil of cricket mushroom bodies, GABA fibres are pre- and postsynaptically connected with proximal Kenyon cell dendrites, indicating synaptic contacts differing from those of the Kenyon cell dendritic tips in the peripheral rnicroglomeruli of the calyces. A more complex interaction of GABAergie fibres and Kenyon cell dendrites than assumed before is shown. In the mushroom bodies of bees, dendritic like strata of GABA fibre projections contribute to the subcompartmental layers of the vertical lobe. The GABA-immunostained fibre profiles exhibit pre- and postsynaptic sites as well and can therefore not be considered purely postsynaptic dendritic neuron parts. The micromorphology and synaptic contacts of the dendrites and dendritic like arborizations are seen as parts of local circuits within mushroom bodies.
引用
收藏
页码:173 / 181
页数:9
相关论文
共 20 条
[1]   MUSHROOM BODY FEEDBACK INTERNEURONS IN THE HONEYBEE SHOW GABA-LIKE IMMUNOREACTIVITY [J].
BICKER, G ;
SCHAFER, S ;
KINGAN, TG .
BRAIN RESEARCH, 1985, 360 (1-2) :394-397
[2]   Structure of the mushroom bodies of the insect brain [J].
Fahrbach, SE .
ANNUAL REVIEW OF ENTOMOLOGY, 2006, 51 :209-232
[3]   Separate distribution of deutocerebral projection neurons in the mushroom bodies of the cricket brain [J].
Frambach, I ;
Schürmann, FW .
ACTA BIOLOGICA HUNGARICA, 2004, 55 (1-4) :21-29
[4]   F-actin at identified synapses in the mushroom body neuropil of the insect brain [J].
Frambach, I ;
Rössler, W ;
Winkler, M ;
Schürmann, FW .
JOURNAL OF COMPARATIVE NEUROLOGY, 2004, 475 (03) :303-314
[5]   GABA-immunoreactive neurons in the mushroom bodies of the honeybee: An electron microscopic study [J].
Ganeshina, O ;
Menzel, R .
JOURNAL OF COMPARATIVE NEUROLOGY, 2001, 437 (03) :335-349
[6]  
GRONENBERG W, 1987, EXP BIOL, V46, P115
[7]  
Grünewald B, 1999, J COMP NEUROL, V404, P114
[8]   Mushroom body memoir: From maps to models [J].
Heisenberg, M .
NATURE REVIEWS NEUROSCIENCE, 2003, 4 (04) :266-275
[9]  
HOMBERG U, 1994, PROGR ZOOLOGY, P1
[10]   Olfactory network dynamics and the coding of multidimensional signals [J].
Laurent, G .
NATURE REVIEWS NEUROSCIENCE, 2002, 3 (11) :884-895