scholarly journals Structural changes in the small intestine associated with the uptake of polyvinyl pyrrolidone by the young ferret, rabbit, guinea-pig, cat and chicken

1970 ◽  
Vol 209 (3) ◽  
pp. 669-687 ◽  
Author(s):  
Rufus M. Clarke ◽  
R. N. Hardy
Keyword(s):  
Small Intestine ◽  
Guinea Pig ◽  
Structural Changes ◽  
Polyvinyl Pyrrolidone

NEONATAL ADRENOCORTICAL FUNCTION AND ITS POSSIBLE RELATION TO THE UPTAKE OF MACROMOLECULES BY THE SMALL INTESTINE OF THE GUINEA-PIG AND RABBIT

1972 ◽  
Vol 55 (2) ◽  
pp. 397-404 ◽  
Author(s):  
K. W. MALINOWSKA ◽  
R. N. HARDY ◽  
P. W. NATHANIELSZ
Keyword(s):  
Small Intestine ◽  
Guinea Pig ◽  
Plasma Cortisol ◽  
Cortisol Concentration ◽  
Polyvinyl Pyrrolidone ◽  
Adrenocortical Function ◽  
Rabbit Plasma ◽  
High Concentration ◽  
Plasma Cortisol Concentration

SUMMARY Plasma cortisol and corticosterone were separated by Sephadex LH-20 chromatography. The high concentration of plasma cortisol immediately after birth in the guinea-pig coincided with the decline in 125I-labelled polyvinyl pyrrolidone (PVP) uptake (closure) between 48 and 72 h. Similarly, in the rabbit, plasma cortisol concentration was increasing at the time of closure, 18–21 days after birth. These results suggest that there is a correlation between the time when the concentration of the main plasma adrenocortical steroid rises and the time when the neonatal small intestine ceases to take up PVP.

Immunochemical visualization of cyclic AMP in myenteric neurons of guinea-pig small intestine+

2001 ◽  
Vol 120 (5) ◽  
pp. A683-A683
Author(s):  
J GUZMAN ◽  
S SHARP ◽  
J YU ◽  
F MCMORRIS ◽  
A WIEMELT ◽  
...  
Keyword(s):  
Small Intestine ◽  
Cyclic Amp ◽  
Guinea Pig ◽  
Myenteric Neurons

Effects of stimulating protease-activated receptors on myenteric newrons in guinea-pig small intestine

2001 ◽  
Vol 120 (5) ◽  
pp. A114-A114
Author(s):  
C GAO ◽  
H HU ◽  
S LIU ◽  
N GAO ◽  
Y XIA ◽  
...  
Keyword(s):  
Small Intestine ◽  
Guinea Pig ◽  
Protease Activated Receptors

STRUCTURAL CHANGES IN THE SMALL INTESTINE WALL AT THE MECHANICAL OBSTRUCTION OF THE DIGESTIVE CHANNEL IN THE EXPERIMENT

2019 ◽  
Vol 15 (67) ◽  
pp. 142
Author(s):  
I. Ya. Dzyubanovskyi ◽  
V. V. Benedykt ◽  
S. O. Nesteruk ◽  
K. S. Volkov
Keyword(s):  
Small Intestine ◽  
Structural Changes ◽  
Mechanical Obstruction

Actions of cysteinyl leukotrienes in the enteric nervous system of guinea-pig stomach and small intestine

2003 ◽  
Vol 459 (1) ◽  
pp. 27-39 ◽  
Author(s):  
Sumei Liu ◽  
Hong-Zhen Hu ◽  
Chuanyun Gao ◽  
Na Gao ◽  
Guodu Wang ◽  
...  
Keyword(s):  
Nervous System ◽  
Small Intestine ◽  
Guinea Pig ◽  
Enteric Nervous System ◽  
Cysteinyl Leukotrienes ◽  
Guinea Pig Stomach

scholarly journals Propagation of Action Potentials and the Structure of the Nexus in Cardiac Muscle

1965 ◽  
Vol 48 (5) ◽  
pp. 797-823 ◽  
Author(s):  
L. Barr ◽  
M. M. Dewey ◽  
W. Berger
Keyword(s):  
Guinea Pig ◽  
Cardiac Muscle ◽  
Action Potentials ◽  
Structural Changes ◽  
Sucrose Solution ◽  
Electrical Coupling ◽  
Intercalated Discs ◽  
Sucrose Gap ◽  
Specialized Structure ◽  
Frog Atrium

The hypothesis that the nexus is a specialized structure allowing current flow between cell interiors is corroborated by concomitant structural changes of the nexus and changes of electrical coupling between cells due to soaking in solutions of abnormal tonicity. Fusiform frog atrial fibers are interconnected by nexuses. The nexuses, desmosomes, and regions of myofibrillar attachment of this muscle are not associated in a manner similar to intercalated discs of guinea pig cardiac muscle. Indeed, nexuses occur wherever cell membranes are closely apposed. Action potentials of frog atrial bundles detected extracellularly across a sucrose gap change from monophasic to diphasic when the gap is shunted by a resistor. This indicates that action potentials are transmitted across the gap when sufficient excitatory current is allowed to flow across the gap. When the sucrose solution in the gap is made hypertonic, propagation past the gap is blocked and the resistance between the cells in the gap increases. Electron micrographs demonstrate that the nexuses of frog atrium and guinea pig ventricle are ruptured by hypertonic solutions.

THE ARGENTAFFIN CELLS OF THE SMALL INTESTINE OF THE GUINEA-PIG

1950 ◽  
Vol 11 (2-3) ◽  
pp. 414-430 ◽  
Author(s):  
Graeme Schofield
Keyword(s):  
Small Intestine ◽  
Guinea Pig
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