Ultrastructure and synaptic relationships of calbindin-reactive, Dogiel type II neurons, in myenteric ganglia of guinea-pig small intestine

1988 ◽  
Vol 17 (6) ◽  
pp. 771-782 ◽  
Author(s):  
S. Pompolo ◽  
J. B. Furness
Keyword(s):  
Small Intestine ◽  
Guinea Pig ◽  
Type Ii ◽  
Dogiel Type Ii ◽  
Myenteric Ganglia

scholarly journals MORPHOMETRIC STUDY OF ISOLATED DOGIEL TYPE II CELLS OF THE INTERMUSCULAR PLEXUS

2021 ◽  
Vol 11 (3) ◽  
pp. 17-19
Author(s):  
Ramilya Babaeva
Keyword(s):  
Small Intestine ◽  
3D Model ◽  
Longitudinal Direction ◽  
3D Models ◽  
Morphometric Study ◽  
Type Ii Cells ◽  
Impregnation Method ◽  
Type Ii ◽  
Type Ii Cell ◽  
Dogiel Type Ii

Aim of the study was to calculate the morphometric parameters of isolated Dogiel type II cells from the intermuscular plexus of the small intestine. Materials and methods: 3D models of the oval-shaped Dogiel type II cells from the intermuscular plexus of a rat (n = 1) were constructed and studied. Neurocytes were identified by the impregnation method on the frontal and horizontal sections of the wall of the small intestine. Results: The results showed that the total number of the nodes in the virtual model was 36534, and the mesh elements — 156595. The resulting 3D model of the cell and nucleus was reduced 900 times to obtain a threedimensional cell and nucleus with absolute dimensions, with a ratio of 1:1 to their true size. The volume of Dogiel type II cell was 2785.11 μm³, the volume of the nucleus was 647.7 μm³ and the volume of its perikaryon was 2785.11 μm³. Conclusion: Dogiel type II cells from the intermuscular plexus of the rat small intestine has an ovoid shaped threedimensional structure. These cells are flattened in transverse direction and elongated in longitudinal direction.

Electrophysiological Features of Morphological Dogiel Type II Neurons in the Myenteric Plexus of Pig Small Intestine

2000 ◽  
Vol 84 (1) ◽  
pp. 102-111 ◽  
Author(s):  
Wim Cornelissen ◽  
Ann De Laet ◽  
Alfons B. A. Kroese ◽  
Pierre-Paul Van Bogaert ◽  
Dietrich W. Scheuermann ◽  
...  
Keyword(s):  
Small Intestine ◽  
Myenteric Plexus ◽  
Type Ii ◽  
Dogiel Type Ii

scholarly journals Glucose metabolism in the mucosa of the small intestine. A study of hexokinase activity

1968 ◽  
Vol 109 (1) ◽  
pp. 35-42 ◽  
Author(s):  
L M Srivastava ◽  
P. Shakespeare ◽  
G. Hübscher
Keyword(s):  
Small Intestine ◽  
Lactate Dehydrogenase ◽  
Glucose Metabolism ◽  
Guinea Pig ◽  
Intestinal Mucosa ◽  
Brush Border ◽  
Deae Cellulose ◽  
Mitochondrial Fraction ◽  
Type Ii ◽  
Hexokinase Activity

1. The intracellular distribution of hexokinase activity was studied in the mucosa of rat and guinea-pig small intestine. In the rat 60% and in the guinea pig 45% of the hexokinase activity of homogenates were recovered in a total particulate fraction that contained only 5–17% of the homogenate activity of hexose phosphate isomerase, pyruvate kinase, lactate dehydrogenase and overall glycolysis (formation of lactate from glucose). 2. Fractionation of homogenates from guineapig small intestine showed that the particulate hexokinase activity was chiefly in the mitochondrial fraction with a small proportion in the nuclei plus brush-border fraction. 3. After chromatography of the particle-free supernatants on DEAE-cellulose, hexokinase types I and II were determined quantitatively. No evidence was obtained for the presence of hexokinase type III or glucokinase. In the preparations from guinea pigs, hexokinase types I and II amounted to 69% and 31% respectively of the eluted activity; the corresponding values for preparations from rats were 5·8% and 94·2%. 4. Total and specific hexokinase activities decreased significantly in homogenates and particle-free supernatants prepared from the intestinal mucosa of rats starved for 36hr. and increased again after re-feeding. The decrease in hexokinase activity in the particle-free supernatant from starved rats was chiefly due to a decrease in the type II enzyme.

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