THE DISTRIBUTION OF NEURONS CONSTITUTING THE SUPERIOR MESENTERIC PLEXUS OF THE CAT—A HRP STUDY
- VernacularTitle:组成猫肠系膜上丛的神经元的分布——HRP法研究
- Author:
Lixin WANG
;
Weiyi MA
;
Luxi XU
;
Peilin ZHANG
- Publication Type:Journal Article
- Keywords:
Superior mesenteric plexus;
Original neurons;
HRP method;
Cat
- From:
Acta Anatomica Sinica
1953;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
The origin of nerves innervating the small intestine and oral part of the colon of the cat was studied by means of the retrograde axonal transport of HRP. Twelve adult cats were used in this experiment. The proximal cut end of the superior mesenteric plexus was immersed in HRP solution, in order to localize the neurons which contribute fibers to this plexus. Neurohistochemical procedures were processed according to Mesulam's tetramethylbenzidine (TMB) method. HRP labeled cells or fibers can be identified bilaterally in the following places: 1. The dorsal motor nucleus of the vagus nerve; about 80% of the labeled cells were found in a region from 0.4mm below to 2.0 mm above the obex, approximately at the rostral two-thirds of the middle segment of this nucleus. 2. The reticular formation of medulla; only a few cells labeled and 92% of them were located in an area from 0.2, mm to 2.7 mm above the obex. 3. The coeliac-superior mesenteric ganglion complex; almost all of the labeled cells were concentrated in the caudal part of it, near the origin of the superior mesenterie plexus. 4. The nodose ganglion; most of the oval or round labeled cells were of medium or small size, their diameters vary from 30 to 40?m, and the average total numbers of the labeled cells were 661 in the left and 695 in the right ganglion respectively. 5. The spinal ganglia; small round or oval labeled cells (25～45 ?m in diameter) were found in the left T_2 to L_5 and right T_2 to L_4 ganglia, with the most heavily labeled segments at T_(13) and L_1 (left, mean 365; right, mean 34% of all labeled cells). The average total number of the labeled Cells were 1872 in the left and 1698 in the right side. 6. Transganglionic labeled fibers were seen in the gracile nuclei of one cat, suggesting that HRP molecules are transported retrogradely in the peripheral process and anterogradely in the centrally projecting process of the same neuron of spinal ganglia.
