scholarly journals Macroscopical and microscopical studies of the common bile duct in reindeer (Rangifer tarandus tarandus L)

Rangifer ◽  
1990 ◽  
Vol 10 (1) ◽  
pp. 3
Author(s):  
Timo Rahko ◽  
Sven Nikander

<p>The histological structure and secretory function of the common bile duct (<em>ductus hepaticus communis</em>) has not been previously described in reindeer. Macroscopical studies were thus performed in 25 reindeer to reveal the morphology and topography of the ductus hepaticus communis and adjoining organs. Histologic structure of the common bile duct was investigated in 20 animals. Our studies showed that the ductus hepaticus communis and pancreaticus join about 2 cm before the duodenal opening to form the common duct. The common bile duct is an elastic tube about 3 to 5 cm long and 2 to 3 mm thick partly surrounded by fat and pancreatic tissues. The wall of the duct, being about 1 mm thick by light microscopy, consisted of folded mucosa surrounded by connective tissue fibres and a serosal layer. Distally, also muscular bands were seen. In some areas separate leucocytes and even lymphatic nodules were present. Surprisingly pancreatic acini occurred in certain areas of the wall, even in close contact to subepithelial tissues. Mucosal epithelium consisted of surface and glandular epithelial cells with mucous secretion. Numerous intraepithelial globule leucocytes were identifiable within the lamina epithelialis.</p><p>Tutkimus yhteisen sappik&auml;yt&auml;v&auml;n rakenteesta porolla.</p><p>Abstract in Finnish / Yhteenveto: Yhteisen sappik&auml;yt&auml;v&auml;n (<em>ductus hepaticus communis</em>) histologista rakennetta ja eritystoimintaa ei ole aikaisemmin kuvattu porolla. Makroskooppisia tutkimuksia suoritettiin 25 porolla yhteisen sappik&auml;yt&auml;v&auml;n rakenteen ja topografian selvitt&auml;miseksi. Sein&auml;m&auml;n histologinen rakenne selvitettiin 20 porolla. Tutkimukset osoittivat, ett&auml; porolla <em>ductus hepaticus communis</em> ja ductus pancreaticus yhtyv&auml;t noin 2 cm ennen ohutsuolta muodostaakseen yhteisen tiehyeen. <em>Ductus hepaticus communis</em> on noin 3-5 cm pitk&auml; ja 2-3 mm:n l&auml;pimittainen k&auml;yt&auml;v&auml;. Se on elastinen ja osit-tain rasva- ja haimakudoksen ymp&auml;r&ouml;im&auml;. Sein&auml;m&auml; on mikroskooppisesti noin 1 mm paksu. Sis&auml;osan muodostaa poimuuntunut limakalvo. Limakalvoa ymp&auml;r&ouml;iv&auml;t sidekudoss&auml;ikeet ja serosa, sappik&auml;yt&auml;v&auml;n loppuosassa my&ouml;s lihass&auml;ikeist&ouml;. Sein&auml;m&auml;ss&auml; havaittiin yksitt&auml;isi&auml; valkosoluja ja imusolukasautumia. Poikkeuksellisena anatomisena piirteen&auml; voidaan pit&auml;&auml; haimasaarekkeiden esiintymist&auml; sappik&auml;yt&auml;v&auml;sein&auml;m&auml;n kudoksissa jopa l&auml;heisess&auml; kosketuksessa pintaepiteeliin. Limakalvon epiteelikudos on sek&auml; pinta- ett&auml; rauhassolukkoa, joka eritt&auml;&auml; limaa. Epiteeliss&auml; tunnistettiin lukuisia ker&auml;ssoluja huolimatta siit&auml;, ett&auml; poroille oli suoritettu loish&auml;&auml;t&ouml; edellisen&auml; syksyn&auml;.</p><p>Studier av gallg&aring;ngen (<em>ductus hepaticus communis</em>) hos ren.</p><p>Abstract in Swedish / Sammandrag: Den gemensamma gallg&aring;ngens histologi och sekretoriska funktion hos renen har inte tidigare beskrivits. F&ouml;r att klarl&auml;gga den makroskopiska byggnaden och topografin av den gemensamma gallg&aring;ngen (<em>ductus hepaticus communis</em>) unders&ouml;ktes dessa i 25 renar. V&auml;ggen i 20 gallg&aring;nger granskades histologiskt. Unders&ouml;kningarna visade att <em>ductus pancreaticus</em> mynnar ut i <em>ductus hepaticus communis</em> bildande en gemensam utforselg&aring;ng till duodenum. <em>Ductus hepaticus communis</em> &auml;r c. 2-3 mm i diameter och 3-5 cm l&aring;ng. Den elastiska gangens v&auml;gg &auml;r c. 1 mm tjock delvis omgiven av fett- och pankreasv&auml;vnad. Gangens v&auml;gg best&aring;r av serosa, bindv&auml;vsfibrer och n&auml;ra mynningen ses muskelfibrer. Insidan av g&aring;ngen &auml;r bekl&auml;dd med en veckad slemhinna. Lymfatisk v&auml;vnad och enstaka lymfocyter observeras. Anm&auml;rkningsv&auml;rt &auml;r att pankreasv&auml;vnad f&ouml;rekommer i gallg&aring;ngens v&auml;gg och under slemhinnan. Slemhinnans epitel best&aring;r av yt- och k&ouml;rtelepitel som avs&ouml;ndrar slem. De globul&auml;ra leukocyterna var talrika i epitelet trots att renarna avmaskats p&aring; h&ouml;sten.</p>

1955 ◽  
Vol 33 (2) ◽  
pp. 156-160
Author(s):  
K. Kowalewski ◽  
A. W. Mooney ◽  
H. A. Hyde

The enterohepatic circulation of radioiodine in rats was interrupted by the ligation of the common bile duct. Significant reduction in the radioactivity of the thyroids was noted in rats following ligation of the common duct and administration of radioiodine per os. In all animals on which operations were performed radioactivity of the liver was increased. The rate of excretion of radioactive bile in rats with cannulated bile ducts was also investigated. The importance of hepatobiliary factors in the process of utilization of tracer dose of radioiodine is briefly discussed. The possibility of alterations in radioiodine uptake in man with disturbed liver function is emphasized.


2020 ◽  
Vol 4 (2) ◽  
pp. 189-195
Author(s):  
R. S. Shyla ◽  

Background. Photodynamic therapy of liver diseases involves the introduction of photosensitizers into the common bile duct. Objective – to evaluate the effect on animals of under pressure introduction of the photosensitizer “Photolon” into the common bile duct. Material and methods. The control group was injected with physiological solution under pressure, the experimental one – with “Photolon”. The vital signs of the animals, the laboratory data were studied, a histological examination of the liver and duct was carried out. Results. The blood parameters of the experimental animals and their postoperative condition were not statistically different from those of the control group (p≤0.05). The liver and common bile duct had normal histological structure. Conclusions. The under pressure introduction of the photosensitizer “Photolon” into the common bile duct causes no morphological changes in the liver tissues and common bile duct and has no toxic effect on animals.


1955 ◽  
Vol 33 (1) ◽  
pp. 156-160
Author(s):  
K. Kowalewski ◽  
A. W. Mooney ◽  
H. A. Hyde

The enterohepatic circulation of radioiodine in rats was interrupted by the ligation of the common bile duct. Significant reduction in the radioactivity of the thyroids was noted in rats following ligation of the common duct and administration of radioiodine per os. In all animals on which operations were performed radioactivity of the liver was increased. The rate of excretion of radioactive bile in rats with cannulated bile ducts was also investigated. The importance of hepatobiliary factors in the process of utilization of tracer dose of radioiodine is briefly discussed. The possibility of alterations in radioiodine uptake in man with disturbed liver function is emphasized.


Rangifer ◽  
1991 ◽  
Vol 11 (2) ◽  
pp. 25
Author(s):  
Sven Nikander

<p>This thesis is based on the following papers, which will be referred to in the next by their Roman numerals:</p><p>I Nikander, S. 1990. On the anatomy and topography of the pancreas and the pancreatic duct in reindeer (Rangifer tarandus tarandus L.). Rangifer 10: 25-29.</p><p>II Rahko, T. &amp; Nikander, S. 1990. Macroscopical and microscopical studies of the common bile duct in reindeer (Rangifer tarandus tarandus L.). Rangifer 10: 3-8.</p><p>III Rahko, T. &amp; Nikander, S. 1990. Histochemical studies of the common bile duct in reindeer. Rangifer 10: 9-15.</p><p>IV Rahko, T. &amp; Nikander, S. 1990. Electron microscopical studies of the common bile duct in reindeer. Rangifer 10: 17-23.</p><p>V Nikander, S. &amp; Rahko, T. 1990. Ultra-structure of granulated cells in the bile duct of reindeer. Rangifer Special Issue No. 3: 363-367.</p>


2017 ◽  
Vol 26 (2) ◽  
pp. 111 ◽  
Author(s):  
Theodor Voiosu ◽  
Monica Ionita ◽  
Andrei Voiosu ◽  
Andreea Bengus ◽  
Cristiana Popp ◽  
...  

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2002 ◽  
Vol 179 (3) ◽  
pp. 804-805 ◽  
Author(s):  
Joseph P. Mazzie ◽  
Burton M. Gold ◽  
Robert Bartolomeo ◽  
Douglas S. Katz

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