1967
DOI: 10.1113/jphysiol.1967.sp008166
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The electrical properties of resting and secreting pancreas

Abstract: SUMMARY1. The electrical properties of the resting and stimulated pancreas have been studied in the anaesthetized cat. There is an inverse relationship between the frequency ofapplied alternating current and the resistivity and dielectric constant of the resting pancreas. The resistivity is also affected by the fat content of the gland. The impedance locus of the pancreas is similar to that of other tissues.2. On intravenous injection of secretin there is a brief increase, followed by a more marked decrease, i… Show more

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Cited by 25 publications
(16 citation statements)
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References 21 publications
(23 reference statements)
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“…Either of two indices of pancreatic blood flow was measured: direct observation of the venous outflow from the gland (after appropriate surgical isolation ofthe gland) or measurement ofthe electrical conductance between platinum electrodes positioned over the tail of the gland at a frequency of 1592 Hz. At this frequency most current flows through the extracellular fluid, including blood (Clark, Greenwell, Harper, Sankey & Scratcherd, 1967), so that an increase occurs on vasodilatation and vice versa. Details of both these methods, with a justification of the latter, have been published (Barlow, Greenwell, Harper & Scratcherd, 1971).…”
Section: Methodsmentioning
confidence: 99%
“…Either of two indices of pancreatic blood flow was measured: direct observation of the venous outflow from the gland (after appropriate surgical isolation ofthe gland) or measurement ofthe electrical conductance between platinum electrodes positioned over the tail of the gland at a frequency of 1592 Hz. At this frequency most current flows through the extracellular fluid, including blood (Clark, Greenwell, Harper, Sankey & Scratcherd, 1967), so that an increase occurs on vasodilatation and vice versa. Details of both these methods, with a justification of the latter, have been published (Barlow, Greenwell, Harper & Scratcherd, 1971).…”
Section: Methodsmentioning
confidence: 99%
“…The pancreatic duct was cannulated at the point it pierced the duodenal wall and held in place by a ligature which also included the bile duct. In some experiments plane-parallel platinum electrodes on a Perspex frame were placed across the tail of the pancreas and connected to a Wayne Kerr Bridge B221 (Clarke, Greenwell, Harper, Sankey & Scratcherd, 1967) to measure the electrical impedance at 1592 Hz.…”
Section: Methodsmentioning
confidence: 99%
“…As vasomotor changes alter the ratio of e.c.f. to cells in the pancreatic tissue, this would lead to an increase in conductance with vasodilation and a decrease with vasoconstriction, as the specific resistance of cat whole blood of 136-9 Q cm at 1592 Hz and 38-5°C is considerably less than that of pancreatic tissue which is 820 Q cm (Clark et al 1967).…”
Section: Changes In Acid/base Statusmentioning
confidence: 99%
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“…Table 2 shows the electrical parameters used. Values of constants like electrical conductivity and permittivity mentioned in Table 2 for pancreas were taken from the work carried out by Clark et al [18] and Gabriel et al [19]. …”
Section: Methodsmentioning
confidence: 99%