scholarly journals Improved motility in the gastrointestinal tract of a postoperative ileus rat model with ilaprazole

2021 ◽  
Vol 25 (6) ◽  
pp. 507-515
Author(s):  
Geon Min Kim ◽  
Hee Ju Sohn ◽  
Won Seok Choi ◽  
Uy Dong Sohn
2019 ◽  
Vol 25 (2) ◽  
pp. 286-299
Author(s):  
Haruaki Murakami ◽  
Shiying Li ◽  
Robert Foreman ◽  
Jieyun Yin ◽  
Toshihiro Hirai ◽  
...  

2007 ◽  
Vol 52 (9) ◽  
pp. 2241-2248 ◽  
Author(s):  
Kalina Venkova ◽  
Graeme Fraser ◽  
Hamid R. Hoveyda ◽  
Beverley Greenwood-Van Meerveld

2006 ◽  
Vol 133 (2) ◽  
pp. 197-202 ◽  
Author(s):  
R. Ciechanownicz ◽  
J. Sein-Anand ◽  
Z. Chodorowski ◽  
M. Bitel ◽  
J. Petrusewicz ◽  
...  

2009 ◽  
Vol 604 (1-3) ◽  
pp. 132-137 ◽  
Author(s):  
Graeme L. Fraser ◽  
Kalina Venkova ◽  
Hamid R. Hoveyda ◽  
Helmut Thomas ◽  
Beverley Greenwood-Van Meerveld

2018 ◽  
Vol 1 (1) ◽  
pp. 34-40
Author(s):  
L. V. Novitskaya-Usenko ◽  
O. N. Kligunenko ◽  
S. G. Dyomin ◽  
O. V. Zaharchuk ◽  
A. I. Lavrova

Background. Postoperative ileus is widespread in the postoperative period and occurs not only after extended operations on the abdominal cavity, retroperitoneal cavity, but also after minor surgical interventions, including laparoscopic operations [1, 2]. The aim of this study is to increase the effectiveness of intensive care after urgent abdominal surgeries by developing a drug correction for bowel motility disorders based on studying of the motor and evacuator function of the gastrointestinal tract, inflammatory markers, hemodynamic parameters and electrolyte blood composition. Materials and methods. 51 patients were examined, who underwent urgent surgical interventions with laparotomy access for infringed hernias, acute intestinal obstruction, perforation of duodenal ulcers. Depending on the variant of drug correction of postoperative intestinal motility disorder, patients were divided into 2 groups. The first (control) group (n = 27). In the postoperative period, the pharmacological correction of the motor-evacuator function of the gastrointestinal tract was performed by combining a solution of 0,5% metoclopramide and neostigmine bromide. The second (main) group (n = 24). In the postoperative period, the pharmacological correction of the motor-evacuator function of the gastrointestinal tract was performed by combining 0.5% metoclopramide solution and L-arginine (Tivortin, Yuriya-Farm, Ukraine). Motorevacuation disorders of the gastrointestinal tract (the frequency of development of bloating, nausea, vomiting, delay in the escape of gases, an independent moving of gases, measurement of intra-abdominal pressure), parameters of hemodynamics, the level of systolic, diastolic, mean arterial pressure, cardiac index, stroke volume, total peripheral vascular resistance, heart rate, minute volume of blood circulation and left ventricular power, markers of inflammation (leukocyte count, fibrinogen, IL-lα, TNFα, IL-10, calculation of leukocyte intoxication index, the study of electrolytes of blood serum (Na+, K+, Ca2+, Cl- ) were studied before and after 1st, 3rd and 7th days after the operation. Results. The use of L-arginine leads to a decrease in the phenomena of peripheral vasospasm, which, improving the microcirculation of the intestinal wall leads to a faster recovery of the motor-evacuation function of the gastrointestinal tract. With standard prokinetic therapy (combination of metoclopramide with neostigmine bromide), the number of patients with elevated intra-abdominal pressure increases in 92,1%, оn the second day after surgery, the number of patients with elevated intra-abdominal pressure exceeds the norm in 100%. The resumption of intestinal motility 3 days after the operation is accompanied by the normalization of intra-abdominal pressure in 55% of patients. Against the backdrop of the use of L-arginine with metoclopramide on day 1 after the operation, the number of patients with an increase in intra-abdominal pressure does not exceed 50%. 37,5% of them have elevated intra-abdominal pressure, 8,3% have abdominal hypertension of the 1st degree. On the second day of the observation, intraabdominal pressure in 41,7% patients normalized, abdominal hypertension of 1 degree was noted in 16,7%. of them. On the 3rd day after surgery, intra-abdominal pressure corresponded to the norm in 79,2% of patients, abdominal hypertension of 1st degree was registered in 8,3% of patients. Сonclusions. The use of a combination of metoclopramide with L-arginine reduces the stress on the myocardium, activates - anti-inflammatory link of the cytokine system, accelerates the normalization of intra-abdominal pressure, increases the rate of self-evacuation, independent defecation, and reduces the patients’ stay in the intensive care, which makes it possible to recommend it as the most optimal remedy for resuming motor activity intestines after urgent operations in abdominal surgery.


2009 ◽  
Vol 136 (5) ◽  
pp. A-114
Author(s):  
Kalina M. Venkova ◽  
William Mann ◽  
Richard Nelson ◽  
Beverley Greenwood-Van Meerveld

1990 ◽  
Vol 68 (5) ◽  
pp. 603-607 ◽  
Author(s):  
Roderick R. A. Campbell ◽  
Brian Hasinoff ◽  
Gary Chernenko ◽  
James Barrowman ◽  
Norman R. C. Campbell

Ferrous sulfate decreases L-dopa bioavailability in humans probably as a result of binding of L-dopa by iron in the gastrointestinal tract. This study was conducted to determine if iron by binding L-dopa decreases L-dopa absorption and to investigate the effect of different pH buffers on intestinal absorption of L-dopa in the presence and absence of ferrous sulfate. A rat model developed to examine drug absorption was used. Control animals had buffered [14C]L-dopa solutions injected into two in vivo closed segments of intestine; a 5-cm duodenal and a 5-cm proximal jejunal segment. These studies were conducted using solutions buffered at pH 5.5, 6.5, 7.5, and 8.5. An identical procedure was followed for experimental animals except ferrous sulfate was injected with the buffered L-dopa solutions. Ferrous sulfate resulted in a reduction in L-dopa absorption in the buffers at all pHs in both the duodenum and jejunum. The average reduction in L-dopa absorption in the presence of iron was 22.6% in the duodenum and 23.9% in the jejunum. There was a tendency for ferrous sulfate to cause a greater reduction in L-dopa absorption as the buffer pH increased. There was also a decrease in L-dopa absorption in the higher pH buffers in the absence of iron. Despite this latter result, in the jejunum there was an increase in the percent reduction in L-dopa absorption associated with ferrous sulfate as pH increased. Although this tendency was not as consistent in the duodenum as the jejunum, the combined results are compatible with the chemical model of increased L-dopa–iron binding as pH increases.Key words: L-dopa, ferrous sulfate, complex formation, chelation, drug absorption.


2016 ◽  
Vol 57 (1-2) ◽  
pp. 22-33 ◽  
Author(s):  
Bodil Ohlsson

Background: Gonadotropin-releasing hormone (GnRH), follicle-stimulating hormone (FSH), and luteinizing hormone (LH) are involved in the reproductive cycle and regulate the secretion of sex steroids from the gonads. In mammals, GnRH1 is secreted as a hormone from the hypothalamus, whereas both GnRH1 and GnRH2 are present as neuropeptides in a variety of tissues. This review describes the role of GnRH in the gastrointestinal tract. Summary: GnRH1, GnRH2, and LH receptors in humans and rats, and GnRH receptors in rats, have been described in the gastrointestinal tract, where they affect motility, gastric and hormone secretion, and cell proliferation. GnRH analogs are clinically used in the treatment of sex hormone-dependent diseases, i.e., endometriosis and malignancies, and as pretreatments for in vitro fertilization. Severe gastrointestinal dysmotility has been shown to develop in some women after such treatment, along with a reduction in the number of enteric neurons and autoantibodies against GnRH. Consequently, a rat model of enteric neurodegeneration has been developed based on the administration of the GnRH analog buserelin. Serum IgM antibodies against GnRH1, the GnRH2 precursor progonadoliberin-2, and the GnRH receptor have also been described in patients with irritable bowel syndrome and dysmotility, as well as in patients with gastrointestinal disorders associated with diabetes mellitus, posterior laryngitis, and primary Sjögren's syndrome, although no treatments using GnRH analogs have been administered. Conclusion: GnRH and receptors for GnRH and LH are present in the human and rat gastrointestinal tract. Treatment with GnRH analogs may induce severe dysmotility, and a rat model of enteric neurodegeneration has been developed based on stimulation by the GnRH analog buserelin. Autoantibodies against GnRH and its receptor are found in a subgroup of patients with functional bowel disorders and dysmotility, independent of treatment with GnRH analogs.


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