scholarly journals Morphological features of the wall of common bile duct under the conditions of experimental opioid exposure

2020 ◽  
Vol 26 (2) ◽  
pp. 26-31
Author(s):  
L.R. Mateshuk-Vatseba ◽  
I.I. Hirniak ◽  
U.Y. Pidvalna
Keyword(s):  
Bile Duct ◽  
Common Bile Duct ◽  
Bile Ducts ◽  
White Male ◽  
Acute Cholangitis ◽  
Medical Science ◽  
Male Rats ◽  
Pathological Changes ◽  
White Rats ◽  
The Common

The morphological condition of the bile ducts remains one of the most important problems of modern medical science. In order to obtain an analgesic effect in patients with acute cholangitis, opioids are often used. However, information on the effectiveness of opioids in the treatment of pathological conditions of the bile ducts is contradictory. The rapidly progressive destruction of the intrahepatic bile ducts associated with the use of narcotic agents has been described. Further study of the effect of opioids on the structural organization of the common bile duct is relevant. In order to establish the morphological state of the common bile duct under conditions of long-term opioid exposure, a study was performed on 24 sexually mature white male rats, aged 3.5-5.0 months and weighing 180-200 g, which were injected intramuscularly with Nalbuphine for 6 weeks. The study material is represented by histological specimens of the common bile duct of white rats. The “Aver Media” computer system was used to photograph microspecimens. The “ImageJ” computer program was used to measure the diameter of the lumen and the wall thickness of the common bile duct. After 2 weeks of Nalbuphine administration to white rats, plethora of wall microvessels and a significant increase in the longitudinal diameter of the lumen of the common bile duct were observed. After 4 weeks of the experiment, the common bile duct was dilated, the transverse and longitudinal diameters of its lumen almost doubled, pathological changes in its wall had all the signs of inflammation. In the later stages of the experiment (introduction of Nalbuphine for 6 weeks), the pathological changes increased and manifested by destructuring the wall of the common bile duct, disorganization of cholangiocytes, thinning of the cell layer due to detachment of cholangiocytes, polymorphism of their nuclei, destruction of intercellular junctions, stratification of its own plate, vacuolar dystrophy of the muscular membrane “varicose” expansion of venules, significant smooth muscle hyperplasia of arterioles, the presence of perivascular lymphocytic infiltrates in the duct wall.

scholarly journals Neuroglobin in Neurons of the Frontal and Parietal Cortex of White Rats in Cholestasis

2020 ◽  
Vol 9 (1) ◽  
pp. 24-29
Author(s):  
S. V. Emel'yanchik ◽  
O. A. Karnyushko ◽  
S. M. Zimatkin
Keyword(s):  
Bile Duct ◽  
Common Bile Duct ◽  
Parietal Cortex ◽  
Pyramidal Neurons ◽  
White Male ◽  
Male Rats ◽  
Control Group ◽  
White Rats ◽  
The Common ◽  
Cytophotometric Analysis

The aim of the study was to investigate the distribution and content of neuroglobin in the pyramidal neurons of the frontal and parietal cortex of white rats during simulated cholestasis.Material and methods. The study included 60 outbred white male rats weighed 200–250 g. Cholestasis was simulated by ligation of the common bile duct in the porta hepatis area (main group, n=30). Animals of the control group (n=30) were performed a false operation preserving physiological bile outflow. Sections of the frontal and parietal cortex of white rats were selected for investigation. The content and distribution of neuroglobin was detected immunohistochemically on paraffin sections using mouse monoclonal primary antibodies Anti- Neuroglobin antibody (Abcam). Cytophotometric analysis was used to perform quantitative assessment of the content of the studied molecular marker; after that statistical analysis was performed.Results. It was found that the content of neuroglobin in the pericarions of neurons of the frontal and parietal cortex modified in a wave-like mode. After ligation of the common bile duct, the content of neuroglobin significantly decreased in 2, 10 and 45 days (minimum on the 10th day) in the frontal cortex and in 90 days in the parietal cortex, and increased in 5 and 20 days of the experiment (maximum on the 20th day).Conclusion. In cholestasis, the content of neuroglobin in the pericarions of neurons of the frontal and parietal cortex modifies in waves: a decrease is observed on the 2nd, 10th, 45th day; an increase is observed on the 5th and 20th day; a recovery is observed on the 90th day.

CHOLANGITIS AS A SYSTEMIC MANIFESTATION OF ACUTE BILIARY INFECTION

2020 ◽  
pp. 43-47
Author(s):  
A. O. Nekludov ◽  
M. O. Klosova ◽  
O. V. Volchenko ◽  
M. M. Goloborodko ◽  
A. Yu. Korolevska
Keyword(s):  
Bile Duct ◽  
Common Bile Duct ◽  
Water Column ◽  
Biliary Tract ◽  
Bile Ducts ◽  
Inflammatory Process ◽  
Acute Cholangitis ◽  
Biliary Infection ◽  
The Common ◽  
Further Development

The main causes of cholangitis are hypertension in the biliary ducts and infection. In order to determine the place of the infectious factor in the acute cholangitis development, a retrospective and prospective analysis of case histories of 176 patients with choledocholithiasis and manifestations of acute and chronic cholangitis was performed. Bile from the common bile duct in the patients with obstruction of the biliary tract was studied. In the patients with mechanical jaundice without and with cholangitis, the intraductal pressure in the common bile duct averaged 227.3±26.1 mm of water column, in the patients without signs of cholangitis that was 97.5±8.3 mm of water column. With mechanical jaundice without acute cholangitis, it was slightly elevated if compared to normal. This suggests that the increase in pressure in the bile ducts in acute cholangitis is not influenced by the fact of obstruction of the biliary tract, and the development of the inflammatory process in them. In the patients with cholangitis, the initial values of the number of colonizing units were much higher than in "pure" choledocholithiasis. After endoscopic papillosphincterotomy in the patients with vivid clinical cholangitis, in whom decompression was achieved, in the control study, this value decreased by 100−500 times, which was accompanied by clinical improvement. According to the results of the study, it was noted that in the patients with a manifested clinic sign of cholangitis there is a significant decrease in the number of colonizing units on the third day after endoscopic papillosphincterotomy. At the stone stuck in a papilla the choledoch turns into so−called analog of an abscess. The opening of the papilla provides a free passage of the contents of the choledochus (i.e. pus) into the duodenum, so there is an almost instant therapeutic effect. The increase in pressure in the bile ducts in acute cholangitis is influenced by the development of an inflammatory process, which indicates the manifestations of biliary infection. The presented research has a prospective character and needs further development. Key words: cholangitis, biliary infection, intraductal pressure, bile.

scholarly journals Effects of plastic stenting in commom bile duct of rats: a quantitative reaction analysis using collagen and elastin morphometry

2010 ◽  
Vol 25 (2) ◽  
pp. 153-157 ◽  
Author(s):  
Everson Luiz de Almeida Artifon ◽  
Fabio Pinatel Lopasso ◽  
Gustavo Brazuna Moura ◽  
Fernando Augusto Mardiros Herbella Fernandes ◽  
Paulo Sakai ◽  
...  
Keyword(s):  
Bile Duct ◽  
Common Bile Duct ◽  
Bile Ducts ◽  
Male Rats ◽  
Biliary Stenting ◽  
Midline Laparotomy ◽  
Plastic Stent ◽  
The Common ◽  
Sirius Red ◽  
Elastin Deposition

PURPOSE: To evaluate the effects of biliary stenting in rats through analysis of collagen and elastin deposition in the bile ducts. METHODS: Twenty male rats underwent midline laparotomy, duodenotomy and transampullary stenting of the common bile duct with a 22Fr plastic stent. Animals were randomized in 4 groups, with 5 components in each: (I) control, (II) biliary stenting for 7 days, (III) biliary stenting for 14 days, and (IV) biliary stenting for 30 days. Sections of the common bile duct were stained using Hematoxylin Eosin; Sirius Red to quantitate the amount of collagen present; and Weigert's Resorcin-fuchsin to quantitate the amount of elastin present. RESULTS: The percentage of area stained for collagen was 13.4; 21.5; 29.5 and 32.8, for groups I to IV, respectively. The percentage of area stained for elastin fibers was 7.0; 5.2; 4.0 and 2.9, for groups I to IV, respectively. Collagen/Elastin ratio was 2.4; 5.1; 11.0 and 14.4 for groups I to IV, respectively. CONCLUSIONS: The biliary stenting leads to collagen and elastin deposition in the bile ducts; and collagen deposition and collagen/elastin ratio are proportional to the period of stenting.

scholarly journals Expression of protein c-fos in cerebellum neurons of rats at cholestasis

2019 ◽  
Vol 16 (2) ◽  
pp. 135-141
Author(s):  
S. V. Emelyanchik ◽  
O. A. Karniushko ◽  
S. M. Zimatkin
Keyword(s):  
Nervous System ◽  
Bile Duct ◽  
Common Bile Duct ◽  
Bile Flow ◽  
Protein C ◽  
White Male ◽  
Male Rats ◽  
Experimental Animals ◽  
The Common

Cholestasis (disturbance of the liver bile outflow into the duodenum) is a frequent complication of cholelithiasis and other pathologies of the hepatobiliary system. In this case, all metabolism types are disturbances and all body organs and systems, including the nervous system, are affected. The objective of the study was to establish changes in the c-fos immunoreactivity in the cerebellum neurons of rats at different time after modeling subhepatic cholestasis. In this work, we used a material of 60 white male rats 200–250 g in weight. In experimental animals, the ligation of the common bile duct was carried out, in control animals – a false operation while maintaining a physiological bile flow in the duodenum throughout the experiment. Subhepatic cholestasis in rats is accompanied by an increase in the cortex cerebellum on the 2–20th days after the ligation of the common bile duct of the number of neurons with the increased c-fos-immunoreactivity, with the maximum one on the 10th day of the experiment. In surviving animals, after the removal of cholestasis in the long term (45–90 days), the number of neurons with the increased c-fos immunoreactivity, as well as the expression of this protein in neurons is normalized.

scholarly journals LAPAROSCOPIC CHOLEDOCH REVISION FOR THE TREATMENT OF CHOLEDOCHOLITHIASIS IN AN INFANT

2019 ◽  
Vol 23 (4) ◽  
pp. 220-223
Author(s):  
M. Yu. Kozlov ◽  
Anton S. Malashenko ◽  
A. A. Shchebeteev
Keyword(s):  
Bile Duct ◽  
Common Bile Duct ◽  
Endoscopic Retrograde Cholangiopancreatography ◽  
Bile Ducts ◽  
Open Abdomen ◽  
Unified Approach ◽  
Endoscopic Retrograde ◽  
Surgical Practice ◽  
Percutaneous Puncture ◽  
The Common

Choledocholithiasis is a rare pathology in children. Various techniques have been proposed for removing calculi from the common bile duct: percutaneous puncture drainage of bile ducts, endoscopic retrograde cholangiopancreatography with papillosphincterotomy as well as revision of the common bile duct which can be done laparoscopically or in the open abdomen. However at present, there is no any unified approach to managing this pahtology in children. The article describes authors’ experience of laparoscopic revision of the common bile duct in an infant with choledocholithiasis. The authors consider that this technique can be applied in pediatric surgical practice.

scholarly journals Cystic form of biliary atresia. Treatment experience

2020 ◽  
Vol 10 (1) ◽  
pp. 17-24
Author(s):  
Irina I. Borisova ◽  
Anatoliy V. Kagan ◽  
Svetlana A. Karavaeva ◽  
Aleksey N. Kotin
Keyword(s):  
Surgical Treatment ◽  
Bile Duct ◽  
Common Bile Duct ◽  
Biliary Atresia ◽  
Bile Ducts ◽  
Surgical Intervention ◽  
Ultrasound Examination ◽  
Duct Cyst ◽  
Cystic Form ◽  
The Common

Background. The cystic form of biliary atresia is a rare form of atresia of the biliary tract, which is a relatively favorable variant of the defect and can be diagnosed antenatally. In practice, it is important not only to suspect this diagnosis, but also to differentiate this variant of impaired development of the external bile duct from the cyst of the common bile duct. This is due to the difference in approaches and methods of surgical treatment of choledochal cysts and biliary atresia. Obliteration (atresia) of the bile ducts in the absence of timely surgical intervention quickly leads to the progression of cirrhosis and the development of liver failure. The method of choice in the treatment of AD is Kasai surgery, often palliative in nature, but allowing to delay the time until liver transplantation. The cyst of the common bile duct rarely requires early surgical treatment, and the risk of cirrhosis is significantly lower. Surgical intervention is aimed at removing the cyst and restoring the flow of bile by anastomosing the external bile ducts with the intestines, which is a radical method of treatment and leads to the recovery of the child. External similarity in ultrasound examination of the fetus and newborn baby of the cystic form of biliary atresia of the bile ducts with a cyst of the common bile duct does not always allow differentiation of one defect from another, which can lead to untimely correction of the defect and an unfavorable outcome. Aim. Demonstrate a rare type of biliary atresia. Materials and methods. Between 2001 and 2019, 33 patients with biliary atresia were treated in the Childrens City Multidisciplinary Clinical Specialized Center for High Medical Technologies in St. Petersburg, only two patients had a cystic form. Both children were initially treated as patients with bile duct cyst. Children were operated on at the age of 2 and 3.5 months. The first patient underwent surgery Kasai, the second hepaticoyunoanastomosis. Results. During the observation period (9 years and 4 years), the synthetic function of the liver is normal, and there are currently no indications for transplantation. Conclusion. If a fetus or a newborn with neonatal jaundice is detected during ultrasound examination of a cystic formation in the gates of the liver, it is very important to correctly and quickly make a differential diagnosis between the cystic form of biliary atresia of the biliary tract and the common bile duct cyst.

scholarly journals Structure and Innervation of the Extrahepatic Biliary System in the Australian Possum, Trichosurus Vulpecula

HPB Surgery ◽  
1993 ◽  
Vol 7 (2) ◽  
pp. 125-140 ◽  
Author(s):  
R. T. A. Padbury ◽  
R. A. Baker ◽  
J. P. Messenger ◽  
J. Toouli ◽  
J. B. Furness
Keyword(s):  
Bile Duct ◽  
Common Bile Duct ◽  
Bile Ducts ◽  
Internal Sphincter ◽  
External Sphincter ◽  
Duodenal Wall ◽  
Sphincter Muscle ◽  
Trichosurus Vulpecula ◽  
Nerve Fibres ◽  
The Common

The morphology, microanatomy and innervation of the biliary tree of the Australian possum, Trichosurus vulpecula, was examined. The gross morphology of the gallbladder, hepatic and cystic ducts, and the course of the common bile duct, conforms to those of other species. The sphincter of Oddi has an extraduodenal segment that extends 15mm from the duodenal wall; within this segment the pancreatic and common bile ducts are ensheathed together by sphincter muscle. Their lumens unite to form a common channel within the terminal intraduodenal segment.Nerve cell bodies of the gallbladder were found in an inter-connecting network of ganglia that were located in the serosa, muscularis and mucosa. Nerve fibres innervated the muscle, arterioles and the mucosa. Few ganglia were found along the supra sphincteric portion of the common bile duct. Nerve trunks followed the duct and a dense nerve fibre plexus was found in the mucosa. In the sphincter most ganglia were located in two plexuses, the first between the layers of the external sphincter muscle, which was continuous with the external muscle of the duodenum, and the second was associated with the internal sphincter muscle. Nerve fibres were numerous in the sphincter muscle, and were also found in the subepithelial and periglandular plexuses of both the pancreatic and common bile ducts.

scholarly journals THE EFFECT OF LIGATION OF THE COMMON BILE DUCT ON CHOLESTEROL SYNTHESIS IN THE RAT

1954 ◽  
Vol 99 (1) ◽  
pp. 43-53 ◽  
Author(s):  
Donald S. Fredrickson ◽  
Alden V. Loud ◽  
Beverly T. Hinkelman ◽  
Henny S. Schneider ◽  
Ivan D. Frantz
Keyword(s):  
Bile Duct ◽  
Common Bile Duct ◽  
Bile Ducts ◽  
Cholesterol Synthesis ◽  
Intact Animal ◽  
Experimental Animals ◽  
Liver Slices ◽  
The Common ◽  
Ad Libitum

The effect on cholesterol synthesis of ligation of the common bile duct was studied in the rat. The bile ducts of rats were ligated; 24 to 48 hours later, estimates of the rate of cholesterol synthesis were made, either by injection of labelled water or acetate into the intact animal, or by incubation of slices or homogenates of the liver in the presence of 1-C14-acetate. These various criteria all indicated that cholesterol synthesis was increased following ligation of the bile duct. The average ratios of the rate of synthesis in the experimental animals to that in the controls were as follows: 1. Synthesis from C14-carboxyl-labelled acetate: (a) in the intact rat fed ad libitum, 19; (b) in liver slices from the fasted rat, 23; (c) in liver slices from the rat fed ad libitum, 4; (d) in cell-free homogenates from the fasted rat, >27; (e) in cell-free homogenates from the rat fed ad libitum, 17. 2. Synthesis from tritium-labelled water in the intact rat fed ad libitum, 4.

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