Shahram Paydar; Golnoush Sadat Mahmoudi Nezhad; Mohammad Yasin Karami; Hossein Abdolrahimzadeh; Mojtaba Samadi; Alireza Makarem; Ali Noorafshan
Volume 7, Issue 1 , January 2019, , Pages 41-48
Abstract
Objective: To evaluate the effect of imbibed fibrinogen gauze on survival, bleeding and healing in liver trauma.Methods: This animal experimental study was conducted on 20 adult male Sprague-Dawley rats; with a mean weight of 300±50 gram; divided into two groups. Grade IV injury was induced ...
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Objective: To evaluate the effect of imbibed fibrinogen gauze on survival, bleeding and healing in liver trauma.Methods: This animal experimental study was conducted on 20 adult male Sprague-Dawley rats; with a mean weight of 300±50 gram; divided into two groups. Grade IV injury was induced to the subjects’ liver. Then, the bleeding site was packed with simple gauze in the control group, and imbibed fibrinogen gauze in the experimental group. All animals were re-evaluated for liver hemostasis 48 hours after the initial injury. Bleeding in the intra peritoneal cavity was measured using Tuberculosis Syringe in the first and second operations. Subjects were followed-up for 14 days. Eventually, the rats were sacrificed and their livers were sent to a lab for stereological assessment. Statistical comparisons were performed via Mann–Whitney U-test using SPSS. P-Values less than 0.05 were considered to be statistically significant.Results: Half of the rats in the control group died, while all the rats in the imbibed fibrinogen gauze group survived after two weeks (p= 0.032). Bleeding in the imbibed fibrinogen gauze was significantly less than control group, 48 hours’ post-surgery (p<0.001). According to the stereological results, granulation tissue in the imbibed fibrinogen gauze group were more than the control group (P= 0.032). Also, fibrosis in the imbibed fibrinogen gauze group were more than the control group (P= 0.014).Conclusion: Our study indicated that imbibed fibrinogen gauze can potentially control liver bleeding and improve survival through increasing granulation tissue and fibrosis in injured liver.
Ali Noorafshan; Sina Kardeh; Soheil Ashkani-Esfahani; Mohammadreza Namazi; Ehsan Saleh
Volume 2, Issue 4 , October 2014, , Pages 161-165
Abstract
Objective: To determine the effects of topical administration of 20% oltipraz solution on histomorphometrical and stereological aspects of skin tissue in full thickness skin wounds in laboratory rats.Methods: Thirty-six male Wistar portion rats (220±20 g) were randomly divided into three groups (n=12). ...
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Objective: To determine the effects of topical administration of 20% oltipraz solution on histomorphometrical and stereological aspects of skin tissue in full thickness skin wounds in laboratory rats.Methods: Thirty-six male Wistar portion rats (220±20 g) were randomly divided into three groups (n=12). On the first day of experimentation, a 1-cm2 circular wound was made on the posterior surface of neck in all rats by removing a full thickness skin piece immediately after induction of anesthesia with ether inhalation. One group was treated with vehicle solution (DMSO alone). The second group was treated daily with 20% oltipraz solution, and the third group, the control group, received no treatment. The wound closure rate was estimated our previously described method. The volume density of collagen bundles, vessels, and hair follicles, the vessels’ length density, mean diameter of vessels and also fibroblast population were estimated by using stereological methods.Results: The oltipraz group indicated a significantly higher improvement (6.26% of the wound surface per day) than control and the vehicle treated groups (p=0.032); furthermore, there was inconsiderable difference between the rate of wound closure in the group treated with vehicle (4.93% per day) and the control group (4.43% per day).Conclusion: Oltipraz has positive influence on fibroblast proliferation and re-epithelization. A noticeable observation in our study was absence of scar formation in wounds which were treated by oltipraz and can be mentioned as an advantage of this drug.
