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Journal of Dental Research, Vol. 82, No. 11,
899-902 (2003)
DOI: 10.1177/154405910308201110
Blood Flow and Interstitial Fluid Pressure in the Rat Submandibular Gland during Changes in Perfusion
E. Berggreen*,
H. Wiig and
K.J. Heyeraas
Department of Physiology, Jonas Lies Vei 91, University of Bergen, N-5009 Bergen, Norway;
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Figure 1. Longitudinal section of the rat submandibular gland depicting the position of the micropipette during recording of IFP in the glandular tissue. Arrows show intercalated ducts.
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Figure 2. Changes in glandular blood flow (GBF), interstitial fluid pressure (IFP), and mean arterial fluid pressure (MAP) during the different experimental situations given as percentages of baseline. Values are means ± SEM. *p < 0.05; **p < 0.01; ***p < 0.001; for experimental conditions vs. baseline. N = number of animals.
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Figure 3. Simultaneous recordings of mean arterial blood pressure (MAP, panel A), glandular interstitial fluid pressure (IFP, panel B), and blood flow (GBF, panel C) before, during, and after clamping of the ipsilateral jugular vein. Clamping of the vein (arrows) reduced GBF and induced an immediate rise in glandular IFP. Arrowhead: period of mean IFP recording. PU = perfusion units.
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Figure 4. Original simultaneous measurements of mean arterial blood pressure (MAP), interstitial fluid pressure (IFP), and blood flow (GBF) before, during, and after electrical stimulation of the lingual nerve (5 sec, 2 msec at 5 Hz; 7 V). Arrows indicate start and end of stimulation. PU = perfusion units.
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