The Effect of TISSEELTM on Confined Bowel Perforation: An Experimental Study

2021 ◽  
pp. 1-10
Author(s):  
Maximos Frountzas ◽  
Vasilios Pergialiotis ◽  
Konstantinos Stergios ◽  
Christina Nikolaou ◽  
Patroklos Katafygiotis ◽  
...  
Keyword(s):  
Experimental Study ◽  
Thrombus Formation ◽  
Bowel Perforation ◽  
Intestinal Wall ◽  
Sprague Dawley ◽  
Perforation Site ◽  
Sprague Dawley Rats ◽  
Suture Group ◽  
Histopathologic Analysis ◽  
Suture Placement

<b><i>Objective:</i></b> During the last decades, surgeons of several specialties presenting different levels of expertise in colon handling have been involved in laparoscopic procedures. The aim of the present experimental study was to investigate the feasibility of TISSEEL<sup>TM</sup> versus the conventional suture placement technique on confined bowel lesions in rats. <b><i>Methods:</i></b> Twenty-four Sprague-Dawley rats underwent confined bowel perforation and were divided into three groups: the SUTURE group (sutures were used), the SUTURE + TISSEEL<sup>TM</sup> group (sutures and TISSEEL<sup>TM</sup> were utilized), and the TISSEEL<sup>TM</sup> group (only TISSEEL<sup>TM</sup> was used). Blinded histopathologic analysis followed animal sacrifice. <b><i>Results:</i></b> The median weight of the rats was 526 ± 50 g. A single animal had hematochezia on the first postoperative day. Cessation of bleeding at the perforation margin was indicated intraoperatively after TISSEEL<sup>TM</sup> application. Animals in the TISSEEL<sup>TM</sup> group presented less intraperitoneal adhesions and lower hemorrhagic infiltration compared to animals of the two other groups. In addition, animals in the TISSEEL<sup>TM</sup> group showed thrombus formation at the bowel perforation site compared to animals of the two other groups (<i>p</i> = 0.042). Histopathologic analysis demonstrated reduced inflammatory reaction (<i>p</i> = 0.003), diminished fibrosis (<i>p</i> = 0.001), and better tissue regeneration (<i>p</i> = 0.000) in the TISSEEL<sup>TM</sup> group compared to the other two groups. <b><i>Conclusion:</i></b> Application of TISSEEL<sup>TM</sup> at the perforation site was associated with increased regeneration of the intestinal wall and less inflammatory and fibrotic reaction compared to suture placement. However, more experimental and clinical studies should be conducted before implementation in humans.

Prevention effect of orally active heparin derivative on deep vein thrombosis

2006 ◽  
Vol 96 (08) ◽  
pp. 149-153 ◽  
Author(s):  
Sang Kim ◽  
Dong Lee ◽  
Choong Kim ◽  
Hyun Moon ◽  
Youngro Byun
Keyword(s):  
Pulmonary Embolism ◽  
Deep Vein Thrombosis ◽  
Venous Thrombosis ◽  
Thrombus Formation ◽  
Sprague Dawley ◽  
Vein Thrombosis ◽  
Sprague Dawley Rats ◽  
Acid Conjugate ◽  
Deep Vein ◽  
Orally Active

SummaryThe use of heparin as the most potent anticoagulant for the prevention of deep vein thrombosis and pulmonary embolism is nevertheless limited, because it is available to patients only by parenteral administration. Toward overcoming this limitation in the use of heparin, we have previously developed an orally active heparin-deoxycholic acid conjugate (LMWH-DOCA) in 10% DMSO formulation. The present study evaluates the anti-thrombogenic effect of this orally active LMWH-DOCA using a venous thrombosis animal model with Sprague-Dawley rats. When 5 mg/kg of LMWH-DOCA was orally administered in rats, the maximum anti-FXa activity in plasma was 0. 35 ± 0. 02, and anti-FXa activity in plasma was maintained above 0. 1 IU/ml [the minimum effective anti-FXa activity for the prevention of deep venous thrombosis (DVT) and pulmonary embolism (PE)] for five hours. LMWH-DOCA (5 mg/kg, 430 IU/kg) that was orally administered reduced the thrombus formation by 56. 3 ± 19. 8%;on the other hand, subcutaneously administered enoxaparin (100 IU/kg) reduced the thrombus formation by 36. 4 ± 14. 5%. Also, LMWH-DOCA was effectively neutralized by protamine that was used as an antidote. Therefore, orally active LMWH-DOCA could be proposed as a new drug that is effective for the longterm prevention of DVT and PE.

Strain Differences Occurring in an Experimental Study of Punishment

1965 ◽  
Vol 16 (2) ◽  
pp. 531-536 ◽  
Author(s):  
Morton H. Kleban
Keyword(s):  
Experimental Study ◽  
Empirical Evidence ◽  
Wistar Rats ◽  
Strain Differences ◽  
Training Procedure ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Y Maze ◽  
Minimum Number ◽  
The Difference

Forty-three Sprague-Dawley and 43 Wistar rats were given reward training for 40 trials in a Y-maze. On the next 20 trials, control groups were continued under the same training procedure, and 50% shock trials were introduced in the training of the remaining rats. For the extinction training, the reward was shifted to the opposite arm and 50% shock was continued for the no-delay and 30-sec. delay shock groups. The most significant results were that in the 30-sec. delay groups, the delay helped the Sprague-Dawley rats reverse in a minimum number of trials, whereas the Wistar rats showed strong indications of response stereotypy. The findings with respect to the Sprague-Dawley rats supported the empirical evidence on the effectiveness of delay in overcoming response persistence and the findings on the Wistar rats supported the empirical evidence on omission in punishment. The difference in response to punishment between the two albino strains emphasizes the need for experimental study of strain factors. Experiments should be repeated with several animal strains to remedy over-generalization from single strains and to help elaborate our understanding of the interaction present between punishment and strains.

scholarly journals Mumefural Improves Blood Flow in a Rat Model of FeCl3-Induced Arterial Thrombosis

Nutrients ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3795
Author(s):  
Jihye Bang ◽  
Won Kyung Jeon
Keyword(s):  
Blood Flow ◽  
Blood Vessels ◽  
Rat Model ◽  
Arterial Thrombosis ◽  
Thrombus Formation ◽  
Sprague Dawley ◽  
Fiber Damage ◽  
Sprague Dawley Rats ◽  
Related Proteins

Mumefural (MF), a bioactive component of the processed fruit of Prunus mume Sieb. et Zucc, is known to inhibit platelet aggregation induced by agonists in vitro. In this study, we investigated the anti-thrombotic effects of MF using a rat model of FeCl3-induced arterial thrombosis. Sprague–Dawley rats were intraperitoneally injected with MF (0.1, 1, or 10 mg/kg) 30 min before 35% FeCl3 treatment to measure the time to occlusion using a laser Doppler flowmeter and to assess the weight of the blood vessels containing thrombus. MF treatment significantly improved blood flow by inhibiting occlusion and thrombus formation. MF also prevented collagen fiber damage in injured vessels and inhibited the expression of the platelet activation-related proteins P-selectin and E-selectin. Moreover, MF significantly reduced the increased inflammatory signal of nuclear factor (NF)-κB, toll-like receptor 4 (TLR4), tumor necrosis factor (TNF)-α, and interleukin (IL)-6 in blood vessels. After administration, MF was detected in the plasma samples of rats with a bioavailability of 36.95%. Therefore, we suggest that MF may improve blood flow as a candidate component in dietary supplements for improving blood flow and preventing blood circulation disorders.

scholarly journals The Effect of a Mediterranean Meal on Sprague Dawley Rats DMBA-Induced Mammary Tumors

2010 ◽  
Vol 3 ◽  
pp. CGM.S5894
Author(s):  
Paula C. Pereira ◽  
A. Filipa Vicente ◽  
Maria F. Mesquita ◽  
Antonio S. Cabrita
Keyword(s):  
Experimental Studies ◽  
Protective Role ◽  
Female Rats ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Total Cancer ◽  
Group A ◽  
Histopathologic Analysis ◽  
Group B

The present study intents to find a possible protective role of a Mediterranean type meal on mammary carcinogenesis. Several factors have been associated with breast cancer risk, genetics and environment are the most pointed out in epidemiologic and experimental studies. Diet is an environmental factor that can promote or prevent disease, being responsible for almost 35% of total cancer cases. A total of 72 female rats 50 days old were randomly divided in three groups of 24 rats and housed 4 in each plastic cage in a holding room under constant conditions of 22 ± 2 °C, 55 ± 10% humidity and a 12 h light/dark cycle. All the animals were submitted to the administration of 20 mg of 7, 12 dimethylbenzanthracene (DMBA) in olive oil, by gavages, except group A. The same defined standard food was provided for all the animals in group A and B, supplemented with a Mediterranean meal in group C. All the animals were sacrificed by the end of 150 days. Total carcinoma number did not differ significantly between Groups B and C and there were not found any neoplastic lesions in Group A. Most tumors showed a mixed architectural pattern, with cribriform and papillary areas, comedocarcinoma and necrosis was only seen in Group B. Histopathologic analysis showed that Group C tumors had lower mitotic activity and Pattern Grades, but higher Nuclear Grades. Mediterranean diet type meal showed lower Pattern Grades and lower Mitotic count in spite of that a higher nuclear pleomorphism was also found. Even so, tumors from Group C were better differentiated which can indicate lower malignancy.

An experimental study of bisphosphonate-induced jaws osteonecrosis in Sprague-Dawley rats

2010 ◽  
Vol 39 (9) ◽  
pp. 697-702 ◽  
Author(s):  
Pía López-Jornet ◽  
Fabio Camacho-Alonso ◽  
Francisco Molina-Miñano ◽  
Francisco Gómez-García ◽  
Vicente Vicente-Ortega
Keyword(s):  
Experimental Study ◽  
Sprague Dawley ◽  
Sprague Dawley Rats

scholarly journals THE NEPHROTOXICITY OF CONCURRENT USE OF ENALAPRIL AND GENTAMICIN IN RATS

2018 ◽  
Vol 11 (9) ◽  
pp. 348
Author(s):  
Imad M Al-ani ◽  
Khaleed R Algantri ◽  
Emad M Nafie ◽  
Sinan Mohammed Abdullah Al-mahmood
Keyword(s):  
Experimental Study ◽  
Serum Creatinine ◽  
Blood Urea Nitrogen ◽  
Normal Saline ◽  
Control Group ◽  
Sprague Dawley ◽  
Concurrent Administration ◽  
Urea Nitrogen ◽  
Concurrent Use ◽  
Sprague Dawley Rats

Objective: The present study was aimed to assess the concurrent administration of Enalapril (ENAL) and Gentamicin (GM) in the kidney of rats.Methods: Sixty male Sprague Dawley rats were divided into 4 main groups (n=15) according to the administered dose. Each main group was further subdivided into three subgroups according to the day of sacrificing (n=5). Group (C) was administered daily with normal saline as control, Group (E) was treated with oral ENAL (2 mg/kg/day), Group (G) was treated with GM (75 mg/kg/day), and Group (EG) was treated ENAL (2 mg/kg/day) and GM (75 mg/kg/day). The handling of the experiment persisted daily for 15 days, and the investigational examination carried out on days 5, 10, and 15.Results: The result showed that GM nephrotoxicity augmented with the period of the experimental study, there was rising in the levels of serum creatinine and blood urea nitrogen on the 10th day and persisted in rising significantly during the period on the 15th day of the experiment. Administration of ENAL showed no significant alteration from those of controls. While the concurrent administration of ENAL and GM showed that ENAL gradually increased GM nephrotoxicity, these physiological retrogressions were accompanied with intensive renal histopathological deteriorations.Conclusion: The present study has revealed that the concurrent administration of ENAL enormously aggravated the functional and histological nephrotoxicity of GM in rats.

Histological analysis of different local haemostatic agents used for periapical surgery: An experimental study with Sprague‐Dawley rats

2019 ◽  
Vol 45 (3) ◽  
pp. 357-364
Author(s):  
Jesús Mena‐Álvarez ◽  
Norberto Quispe‐López ◽  
Álvaro Zubizarreta‐Macho ◽  
Cristina Rico‐Romano ◽  
Rosa Rodero‐Villanueva ◽  
...  
Keyword(s):  
Experimental Study ◽  
Histological Analysis ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Haemostatic Agents

scholarly journals The Effect of Endurance Training and Saffron Extract on Plasma Levels of Interleukin 17 and 18 in Alzheimer’s Rats by Trimethyltin Chloride

2020 ◽  
Vol 10 (2) ◽  
pp. 148-159
Author(s):  
Fatemeh Tahvili ◽  
◽  
Mozhgan Ahmadi ◽  
Keyword(s):  
Experimental Study ◽  
Exercise Training ◽  
Endurance Training ◽  
Plasma Levels ◽  
Interleukin 17 ◽  
Interleukin 18 ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Saffron Extract ◽  
Trimethyltin Chloride

Objective: The Pathological symptoms of Alzheimer’s disease and the degeneration of nerve cells cause inflammation in these patients. This study aimed to investigate the effect of endurance training and saffron extract on the plasma levels of interleukin 17 and 18 in Alzheimer’s rats by trimethyltin chloride.  Methods: This experimental study was conducted on 32 male Sprague-Dawley rats weighing 180 ± 20 grams. After Alzheimer’s induction (by the intraperitoneal injection of 80 mg/kg trimethyltin chloride), the rats were randomly assigned into four groups: control, training, saffron extract, saffron extract + training. The saffron extract was injected intraperitoneally at the dose of 25 mg/kg, daily, for eight weeks. Also, the endurance training program consisted of incremental running on the treadmill at a speed of 15 to 20 m/min. The program was performed in 15 to 30 minutes sessions, three sessions per week, for eight weeks. Finally, the obtained data were analyzed using two-way ANOVA at the P < 0.05. Results: The results showed that exercise (P=0.10), saffron consumption (P=0.07), and the interaction of exercise and saffron consumption (P=0.06) did not significantly affect interleukin 17, in rats. Also, exercise (P=0.68), saffron consumption (P=0.84), and the interaction of exercise and saffron consumption (P=0.57) had no significant effect on interleukin 18, in rats. Conclusion: According to the results, it seems that exercise training and saffron extract do not affect the interleukin 17 and interleukin 18 in Alzheimer’s rats.

scholarly journals Chronic stress increases the tyrosine phosphorylation in female reproductive organs: An experimental study

2021 ◽  
Author(s):  
Sudtida Bunsueb ◽  
Natthapol Lapyuneyong ◽  
Saranya Tongpan ◽  
Supatcharee Arun ◽  
Sitthichai Iamsaard
Keyword(s):  
Experimental Study ◽  
Tyrosine Phosphorylation ◽  
Chronic Stress ◽  
Cold Water ◽  
Polyacrylamide Gel Electrophoresis ◽  
Sodium Dodecyl ◽  
Reproductive Organs ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Sds Page

Background: Changes in tyrosine-phosphorylated (TyrPho) protein expressions have demonstrated stress in males. In females, chronic stress (CS) is a major cause of infertility, especially anovulation. However, the tyrosine phosphorylation in the female reproductive system under stress conditions has never been reported. Objective: To investigate the alteration of TyrPho protein expression in ovary, oviduct, and uterus of CS rats. Materials and Methods: In this experimental study, 16 female Sprague-Dawley rats (5 wk: 220-250 gr) were divided into control and CS groups (n = 8/group). Every day, the CS animals were immobilized within a restraint cage and individually forced to swim in cold water for 60 consecutive days. Following the stress induction, the ovary, oviduct, and uterus of all rats were observed for their morphologies. The total protein profiles of all tissues were revealed by sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) before detecting TyrPho proteins using western blot. Intensity analysis was used to compare the expression of proteins between groups. Results: The results showed that the morphology and weights of ovary and oviduct in the CS group were not different from control. In contrast, the CS significantly increased the uterine weight as compared to control. Moreover, the expressions of TyrPho proteins in the ovary (72, 43, and 28 kDas), oviduct (170, 55, and 43 kDas), and uterus (55, 54, and 43 kDas) were increased in CS group as compared to those of control. Conclusion: The increased expressions of TyrPho proteins in ovary, oviduct, and uterus could be potential markers used to explain some mechanisms of female infertility caused by chronic stress. Key words: Ovary, Oviduct, Uterus, Phosphorylation.

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