hsv:(ENGINEERING AND TECHNOLOGY) hsv:(Medical Engineering) hsv:(Other Medical Engineering)
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Testicular microcirculation in the rat studied by videophotometric capillaroscopy, fluorescence microscopy and laser Doppler flowmetry
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- Damber, Jan-Erik (author)
- Umeå University, Department of Physiology
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- Bergh, Anders (author)
- Umeå University, Department of Physiology
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- Fagrell, Bengt (author)
- Danderyds sjukhus
- show more...
- Lindahl, Olof (author)
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- (creator_code:org_t)
- Wiley, 1986
- 1986
- English.
- In: Acta Physiologica Scandinavica. - : Wiley. - 0001-6772 .- 1365-201X. ; 126:3, s. 371-376
- Journal article (peer-reviewed)
Abstract
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- Testicular capillary blood flow was studied in rats using laser Doppler flowmetry, in vivo fluorescence microscopy and videophotometric capillaroscopy. All the methods revealed rhythmical oscillations in testicular microcirculation with a periodicity of 4-10 c.p.m. In arterioles, capillaries and small post-capillary vessels, periods of continuous blood flow alternated with periods of no or very low flow. No visible leakage of dextran-150 was observed from the testicular blood vessels. Four, 8 and 16 h after an s.c. injection of 200 IU hCG the blood flow was continuous and there was leakage of dextran-150 from the microvessels to the interstitial tissue. Twenty-four and 32 h after hCG the blood flow pattern was again rhythmical, and at 32 h there was no leakage of dextran-150. This suggests that hCG induces changes in blood flow and transvascular fluid exchange in the testis, perhaps by altering smooth muscle activity at the arteriolar-level.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Annan medicinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Other Medical Engineering (hsv//eng)
Keyword
- Medical Engineering for Healthcare
- Medicinsk teknik för hälsovård
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- ref (subject category)
- art (subject category)
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- Bergh, Anders
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- Lindahl, Olof
- Rooth, Pål
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- Luleå University of Technology
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