scholarly journals Motor function of the gastrointestinal tract in gastric erosions

2021 ◽  
pp. 167-171
Author(s):  
A. E. Lychkova ◽  
S. G. Khomeriki ◽  
A. M. Puzikov
Keyword(s):  
Small Intestine ◽  
Gastrointestinal Tract ◽  
Motor Function ◽  
Biliary Tract ◽  
Muscle Contractions ◽  
Control Group ◽  
Gastric Erosion ◽  
Motor Disorders ◽  
Gastric Erosions ◽  
Phase Activity

The aim is to study motor disorders of the gastrointestinal tract and biliary tract with erosion of the stomach. Materials and methods. Electromyography (EMG) of the gastrointestinal tract and biliary tract was performed in 35 patients with gastric erosions; the control group consisted of 10 patients with gastric ulcer. A morphological study of biopsies of the antrum of the stomach was carried out. Results. Patients with erosion of the stomach were characterized by severe hypermotor dyskinesia of the stomach with a decrease in the motor function of the small intestine and multidirectional changes in the motor function of the colon. Motility of the biliary tract is characterized by an increase in tonic activity with a slight increase in phase activity. Histological examination revealed areas of fibrinoid necrosis in its own plate and foci of destruction of the end sections of the pyloric glands. Conclusion. Motor function of patients with gastric erosion is characterized by a greater power of muscle contractions of the stomach, a smaller power of muscle contractions of the small intestine and multidirectional changes of the power contractions of various sections of the colon.

scholarly journals Effects of dietary leucine and phenylalanine on gastrointestinal development and small intestinal enzyme activities in milk-fed holstein dairy calves

2019 ◽  
Vol 39 (1) ◽  
Author(s):  
Yangchun Cao ◽  
Shimin Liu ◽  
Xinjian Yang ◽  
Long Guo ◽  
Chuanjiang Cai ◽  
...  
Keyword(s):  
Small Intestine ◽  
Gastrointestinal Tract ◽  
Short Circuit ◽  
Digestive Enzyme ◽  
Anterior Segment ◽  
Dairy Calves ◽  
Control Group ◽  
Trypsin Activity ◽  
Amino Acid Group ◽  
Small Intestinal

Abstract This study was investigated the effects of dietary supplementation of leucine and phenylalanine on the development of the gastrointestinal tract and the intestinal digestive enzyme activity in male Holstein dairy calves. Twenty calves with a body weight of 38 ± 3 kg at 1 day of age were randomly divided into four groups: a control group, a leucine group (1.435 g·l−1), a phenylalanine group (0.725 g·l−1), and a mixed amino acid group (1.435 g·l−1 leucine plus 0.725 g·l−1 phenylalanine). The supplementation of leucine decreased the short-circuit current (Isc) of the rumen and duodenum (P<0.01); phenylalanine did not show any influence on the Isc of rumen and duodenum (P>0.05), and also counteracted the Isc reduction caused by leucine. Leucine increased the trypsin activity at the 20% relative site of the small intestine (P<0.05). There was no difference in the activity of α-amylase and of lactase in the small intestinal chyme among four treatments (P>0.05). The trypsin activity in the anterior segment of the small intestine was higher than other segments, whereas the α-amylase activity in the posterior segment of the small intestine was higher than other segments. Leucine can reduce Isc of the rumen and duodenum, improve the development of the gastrointestinal tract, and enhance trypsin activity; phenylalanine could inhibit the effect of leucine in promoting intestinal development.

scholarly journals The Protective Effect of Dapsone Against Ethanol, Stress, and Indomethacin-Induced Gastric Erosion in Rats

2021 ◽  
Author(s):  
Mohammad Sheibani ◽  
Sadaf Nezamoleslami ◽  
Nastaran Rahimi ◽  
Ata Abbasi ◽  
Ahmad Reza Dehpour
Keyword(s):  
Inflammatory Cytokines ◽  
Experimental Models ◽  
Gastric Damage ◽  
Male Rats ◽  
Ethanol Stress ◽  
Control Group ◽  
Gastric Erosion ◽  
Protective Effects ◽  
Gastric Erosions ◽  
Anti Inflammatory

Several factors contribute to the development of gastric erosions, including corticosteroids and nonsteroidal anti-inflammatory drugs (NSAIDs), alcohol, and stress. These factors can cause or worsen gastrointestinal ulcers by activating inflammatory pathways or by altering gastric mucosal blood flow. Dapsone is an antimicrobial compound with anti-inflammatory properties. The aim of this study was to evaluate the protective effects of dapsone against gastric erosions induced by alcohol, stress, or indomethacin. Gastric damage was induced in male rats in three different experimental models: ethanol (5 ml/kg, p.o.)-, water-immersion stress-, and indomethacin (30 mg/kg, p.o.)- induced ulcer. Rats in each of these three experimental models were divided into five groups: Normal group, 2. Control group (gastric damage+vehicle), 3. Gastric damage+dapsone 1 mg/kg, 4. Gastric damage+dapsone 3 mg/kg, 5. Gastric damage+dapsone 10 mg/kg. In this study, the J- score ulcer index and histopathological assessment were performed. In addition, inflammatory cytokines levels, NF-κB expression, and MPO activity were determined. Dapsone reduced the tissue injuries and erosion area in all three experimental groups compared to the control group. In addition, serum levels of inflammatory cytokines, TNF-alpha, and IL-1β were reduced in the dapsone treatment groups. The expression of NF-κB and tissue concentration of myeloperoxidase (a marker of neutrophil activation) was also reduced in rats given dapsone. To conclude, dapsone exhibits significant protective effects against the development of experimental gastric erosions in rats, and these effects seem to be related to its anti-inflammatory and antioxidant properties.

scholarly journals Electromagnetic Fields Modify Redox Balance in the Rat Gastrointestinal Tract

2021 ◽  
Vol 9 ◽  
Author(s):  
Karolina Sieroń ◽  
Katarzyna Knapik ◽  
Grzegorz Onik ◽  
Ewa Romuk ◽  
Ewa Birkner ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Small Intestine ◽  
Gastrointestinal Tract ◽  
Salivary Glands ◽  
Electromagnetic Fields ◽  
Large Intestine ◽  
Mobile Phones ◽  
Low Frequency ◽  
Control Group ◽  
Small And Large Intestine

Objective: The aim of the study was to assess the influence of electromagnetic fields with divergent physical properties on the prooxidative and antioxidative balances in homogenates of the tongue, salivary glands, esophagus, stomach, and small and large intestines of rats.Material and Methods: Forty rats were randomly divided into four equal groups, namely, a control group, a group exposed to low-frequency electromagnetic fields (LF-EMFs; frequency: 50 Hz; intensity: 10 kV/m; magnetic induction: 4.3 pT), a group exposed to radiofrequency electromagnetic fields (RF-EMFs) emitted by mobile phones (frequency: 900 MHz), and a group exposed simultaneously to LF-EMFs and RF-EMFs emitted by mobile phones. After 28 consecutive days of the experiment, the following pro- and antioxidative markers were assessed in the gastrointestinal tract homogenates: superoxide dismutase (SOD) and its two isoenzymes (Mn-SOD, Cu,Zn-SOD) catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), glutathione S-transferase (GST), total antioxidative capacity (TAC), total oxidative status (TOS), and malondialdehyde (MDA).Results: In rats exposed to LF-EMFs, higher concentrations of the markers of prooxidant processes, MDA or TOS, were observed in the salivary glands, esophagus, and small intestine homogenates in comparison with the control group. Additionally, in the group of rats opposite to the control, antioxidant activity was observed. The main differences included a higher activity of Cu,Zn-SOD in homogenates of the tongue, salivary glands, and esophagus as well as decreased activity of CAT in homogenates of the tongue, esophagus, and small intestine. In animals exposed to RF-EMFs, the concentration of TOS was higher in the large intestine than in control rats. The main difference of antioxidant activity was presented by decreased Cu,Zn-SOD in homogenates of the salivary glands, stomach, small and large intestine as well as CAT in homogenates of the tongue, esophagus, stomach, and small and large intestine. Moreover, in rats exposed simultaneously to LF-EMFs and RF-EMFs, a lower concentration of TOS was observed. Antioxidant activity was presented by a decreased activity of CAT in homogenates of the tongue, esophagus, stomach, and small and large intestine in comparison to the control group.Conclusion: Among those applied in the study, electromagnetic fields of a low-frequency caused the most significant disturbances of oxidative stress in the rat gastrointestinal tract.

scholarly journals Chronic constipation combined with biliary tract dysfunction in children: comorbidity or clinical regularity?

2019 ◽  
pp. 130-136
Author(s):  
I. N. Zakharova ◽  
I. V. Berezhnaya ◽  
S. V. Shishkina
Keyword(s):  
Antioxidant Activity ◽  
Gastrointestinal Tract ◽  
Biliary Tract ◽  
Chronic Constipation ◽  
Comparison Group ◽  
Clinical Symptoms ◽  
Pain Syndrome ◽  
Herbal Extract ◽  
Control Group ◽  
Tocopherol Level

Functional disorders of the gastrointestinal tract (GIT) are a common problem in children. The Roman IV criteria adopted in 2016, devoted to the problem of constipation and biliary tract dysfunction in children are developed in accordance with age and are idendoitified by the letter code. This article presents data on the correspondence of the Roman IV criteria and ICD-10 in the combined problem of constipation and biliary tract dysfunction in children. The development of upper gastrointestinal tract pathology caused by increased intracavitary pressure associated with impaired colon motility (chronic constipation) is natural during a prolonged course of chronic constipation. The study based on a specially designed questionnaire in Russia showed that an average of 54% of children in different age groups suffer from chronic constipation, that is, almost every second child. Studies showed that the frequency of biliary tract dysfunction in children with chronic constipation accounts for 42.3 to 100% cases. The survey that we conducted among pediatricians showed that a quarter of doctors found it difficult to establish diagnosis, and 41% of pediatricians struggled with prescribing therapy for persistent constipation in children, especially constipation combined with motor-tonic dysfunction of the colon in children with biliary tract dysfunction. A total of 201 children aged 6 to 15 years (96 boys and 114 girls) were enrolled in the study. In addition to pain syndrome, cellular energy exchange disorder in the form of decreased level of intracellular antioxidant catalase enzyme and plasma antioxidant activity (PAO) was identified against the background of chronic constipation and biliary tract dysfunction in this group of children, which is evidence of decompensation of antioxidant protection in the acute stage of biliary tract dysfunctional disorders in children. The identified changes make a strong case for prescribing a drug with hepatoprotective, choleretic and antioxidant effects. The use of herbal extract of fresh artichoke leaves (Chophytol®, Mayoly Spindle, France) showed the relief of pain syndrome by Day 14 of treatment in 92% of patients (75% in the comparison group), nausea in 74% of children, constipation in 88% (50% of patients in the comparison group). It is important to detect an elevated α-tocopherol level and significantly reduced catalase level, which indicates the need to choose a drug with selective antioxidant activity, which does not change the α-tocopherol level. The introduction of the herbal extract of fresh artichoke leaves (Chophytol®) in the complex therapy of the studied patients accelerated the relief of the clinical symptoms of functional biliary tract disorders and reduced the frequency of constipation in children by 4 times as compared with the control group without significant effect on the α-tocopherol level.

ANTICYTOKINE ACTIVITY OF THE PROTOZOA BLASTOCYSTIS SPP

2020 ◽  
pp. 44-48
Author(s):  
Bugero N.V. ◽  
Ilyina N.A. ◽  
Aleksandrova S.M.
Keyword(s):  
Gastrointestinal Tract ◽  
Gastrointestinal Diseases ◽  
Control Group ◽  
Ulcer Disease ◽  
Cytokine Balance ◽  
High Prevalence ◽  
Blastocystis Spp ◽  
High Level ◽  
Eukaryotic Organisms ◽  
High Degree

In addition to the classical pathogens, which are well understood and well identified, new pathogens with the potential to spread epidemiologically are being identified. Some of these little-known organisms are the simplest Blastocystis spp. blastocystostosis. The clinical significance of Blastocystis spp. and its pathogenicity are still under discussion. This parasite belongs to a group of single-celled eukaryotic organisms living in the colon of the human intestine. Blastocystis spp. is known to be found both in people with reduced immune status and in individuals without any clinical manifestation. It has been established that a sufficiently high degree of invasiveness is observed in persons with gastrointestinal tract diseases, dermatosis, allergic reactions, in patients with carriers of the human immunodeficiency virus, etc. Possessing persistence factors, protozoa blastocysts contribute to the inactivation of host defensive mechanisms, providing a stable anthogonistic effect. In recent years, many works have been devoted to the characteristics of the persistent properties of Blastocystis spr., however, individual properties of blastocysts, in particular, anticytokine activity (ACA), have not yet been studied. In this regard, the work studied the anticytokine activity of microorganisms isolated from healthy subjects and patients with gastrointestinal tract diseases. A high prevalence of the studied characteristic in the subjects was shown. The expression of anticytokine activity in the obtained isolates of blastocysts was the highest in the group of persons with gastric ulcer disease, which decreased in the order of duodenal ulcer, chronic cholecystitis, chronic gastritis, etc. The data obtained in this work on the high level of ACA expression in blastocyst isolates obtained from individuals with gastrointestinal diseases as compared with the control group enables to conclude that their exometabolites may influence the local cytokine balance [1], which supports the inflammatory process.

CHANGES IN SMALL INTESTINE MICROFLORA IN PATIENTS WITH ACUTE INTESTINAL OBSTRUCTION

2020 ◽  
pp. 16-18
Author(s):  
V. M. Lykhman ◽  
O. M. Shevchenko ◽  
Ye. O. Bilodid ◽  
Igor Vladimirovich Volchenko ◽  
I. A. Kulyk ◽  
...  
Keyword(s):  
Small Intestine ◽  
Gastrointestinal Tract ◽  
Species Composition ◽  
Intestinal Obstruction ◽  
Bacterial Flora ◽  
Anaerobic Bacteria ◽  
Acute Intestinal Obstruction ◽  
Gram Positive ◽  
Mechanical Intestinal Obstruction ◽  
Facultative Anaerobic Bacteria

Among urgent surgical diseases of abdominal cavity, an acute intestinal obstruction is the most difficult to be diagnosed and treated. Leading factor, determining the development of pathophysiological processes is considered to be the progressive manifestations of enteric insufficiency syndrome, resulting in intestinal barrier impairment, negative changes in ecology of intestinal flora, increased endotoxins. To identify the small intestine microflora in acute intestinal obstruction and determine the role of dysbiotic disorders in clinical manifestations of main pathological process, a study was conducted in 60 patients with mechanical intestinal obstruction. The small intestine has a relatively rare microflora, consisting mainly of gram−positive facultative aerobic microorganisms, streptococci, lactobacilli. The distal ileum in nearly 30−55 % of healthy people contains scanty microflora, and yet the flora of this area differs from the microbial population of the higher gastrointestinal tract due to higher concentration of gram−negative bacteria. Optional−anaerobic coliform bacilli, anaerobic bifidobacteria and fusobacteria, bacteroids, the number of which starts exceeding the one of gram−positive species, are presented in significant quantities. Distal to the ileocecal valve there are significant changes in the microflora quantitative and species composition. Obligatory anaerobic bacteria become the predominant part of microflora, exceeding the number of aerobic and facultative anaerobic bacteria. The bacterial flora in different parts of gastrointestinal tract has its own specifics and is quite constant, as a result of the interaction of many factors, regulating the bacterial population in small intestine. The most important among them are: acidity of gastric juice, normal peristaltic activity of the intestine, bacterial interactions and immune mechanisms. Disorders of the intestine motor and evacuation function with its obstruction lead to slow passage of the chyme and contamination of the upper gastrointestinal tract with new types of microbes. There is a syndrome of small intestine excessive colonization, which means an increased concentration of bacterial populations in it, similar in species composition to the colon microflora. Pathological intra−intestinal contents become a source of endogenous infection and re−infection of the patient, leads to internal digestive disorders, which is manifested by syndrome of malabsorption of proteins, carbohydrates and vitamins. Key words: acute intestinal obstruction, small intestinal microflora, conditionally pathogenic microorganisms, intestinal biocenosis.

scholarly journals Biodistribution of the radiophamarceutical sodium pertechnetate (Na99mTcO4) after massive small bowel resection in rats

2007 ◽  
Vol 22 (6) ◽  
pp. 430-435 ◽  
Author(s):  
Dâmaso de Araújo Chacon ◽  
Irami Araújo-Filho ◽  
Arthur Villarim-Neto ◽  
Amália Cínthia Meneses Rêgo ◽  
Ítalo Medeiros Azevedo ◽  
...  
Keyword(s):  
Small Intestine ◽  
Short Bowel Syndrome ◽  
Intestinal Mucosa ◽  
Intestinal Resection ◽  
Small Bowel Resection ◽  
Control Group ◽  
Short Bowel ◽  
Massive Resection ◽  
Mucosal Thickness ◽  
Misleading Interpretation

PURPOSE: To evaluate the biodistribution of sodium pertecnetate (Na99mTcO4) in organs and tissues, the morphometry of remnant intestinal mucosa and ponderal evolution in rats subjected to massive resection of the small intestine. METHODS: Twenty-one Wistar rats were randomly divided into three groups of 7 animals each. The short bowel (SB) group was subjected to massive resection of the small intestine; the control group (C) rats were not operated on, and soft intestinal handling was performed in sham rats. The animals were weighed weekly. On the 30th postoperative day, 0.l mL of Na99mTcO4, with mean activity of 0.66 MBq was injected intravenously into the orbital plexus. After 30 minutes, the rats were killed with an overdose of anesthetic, and fragments of the liver, spleen, pancreas, stomach, duodenum, small intestine, thyroid, lung, heart, kidney, bladder, muscle, femur and brain were harvested. The biopsies were washed with 0.9% NaCl.,The radioactivity was counted using Gama Counter WizardTM 1470, PerkinElmer. The percentage of radioactivity per gram of tissue (%ATI/g) was calculated. Biopsies of the remaining jejunum were analysed by HE staining to obtain mucosal thickness. Analysis of variance (ANOVA) and the Tukey test for multiple comparisons were used, considering p<0.05 as significant. RESULTS: There were no significant differences in %ATI/g of the Na99mTcO4 in the organs of the groups studied (p>0.05). An increase in the weight of the SB rats was observed after the second postoperative week. The jejunal mucosal thickness of the SB rats was significantly greater than that of C and sham rats (p<0.05). CONCLUSION: In rats with experimentally-produced short bowel syndrome, an adaptive response by the intestinal mucosa reduced weight loss. The biodistribution of Na99mTcO4 was not affected by massive intestinal resection, suggesting that short bowel syndrome is not the cause of misleading interpretation, if an examination using this radiopharmaceutical is indicated.

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