scholarly journals The importance of aminoguanidine and methylprednisolone administration in lung contusion after chest trauma

2021 ◽  
Vol 38 (4) ◽  
pp. 504-510
Author(s):  
Fatih ÇALIŞKAN ◽  
Hızır Ufuk AKDEMİR ◽  
Celal KATI ◽  
Latif DURAN ◽  
Tolga GÜVENÇ
Keyword(s):  
Combined Treatment ◽  
Serum Levels ◽  
The Other ◽  
Pulmonary Contusion ◽  
Sprague Dawley ◽  
Treatment Groups ◽  
Sprague Dawley Rats ◽  
Combined Use ◽  
Significant Difference ◽  
All Treatment

This study aims to evaluate the effect of the antioxidant and anti-inflammatory properties of aminoguanidine and metylprednisolone (MP) on lung tissue in a pulmonary contusion model of rats and evaluate whether their combined use improves treatment efficacy. This study included 35 female Sprague Dawley rats weighing 250-300 grams. The rats were divided into five groups as following: Sham; Pulmonary Contusion (PC); PC+MP, PC group treated with i.p methylprednisolone; PC+AG, PC group treated with i.p Aminoguanidine; and PC+AG+MP, PC group treated with Aminoguanidine and methylprednisolone. Each group had seven animals. Blood and lung tissues were studied biochemically and histopathologically. When compared groups according to serum levels of biomarkers, serum YKL-40, nitrate-nitrite, catalase, and TBARS levels were significant different. Serum YKL-40 levels were decreased after treatments in three groups. The serum YKL-40 levels in PC+AG group were lower than the other treatment groups, especially compared to PC + MP (p=0.028). Serum nitrate-nitrite levels were decreased in all treatment groups (PC+MP, PC+AG and PC+MP+AG). The lowest levels were measured in PC+MP+AG; but there was no statistically significant difference compared to PC group (p>0.05). Serum catalase levels were increased in all treatment groups. The higher levels were measured in PC+MP+AG than the other single treatment groups; however, PC+MP+AG and PC+MP were statistically significant different compared to PC group (p=0.001 and p=0.002 respectively). Serum TBARS levels were decreased in all treatment groups compared to Sham group (p<0.001) and PC group (p<0.001). The lowest levels were measured in PC+MP+AG compared to PC group (p<0.001). Histopathologic and immunohistochemical staining scores were decreased at all the treatment groups, especially PC+MP+AG. We suggest the use of combined treatment of methylprednisolone and aminoguanidine for the treatment of pulmonary contusion.

scholarly journals Feeding Sprague Dawley Rats With Jordanian Wild Edible Plants and a High Fat Diet Reduced the Malondialdehyde Levels

2019 ◽  
Vol 11 (10) ◽  
pp. 71
Author(s):  
Anwar A. Al-Assaff ◽  
Hamed R. Takruri
Keyword(s):  
High Fat Diet ◽  
Fasting Blood Glucose ◽  
Serum Levels ◽  
The Other ◽  
Control Group ◽  
Sprague Dawley ◽  
High Fat ◽  
Treatment Groups ◽  
Sprague Dawley Rats ◽  
Plant Powders

The objective of this study was to determine the effect of selected Jordanian wild edible plant on lipid peroxidation and lipid profile in adult male Sprague Dawley rats fed high-fat diet. Fiftysix male, adult Sprague-Dawley rats at eight weeks of age, weighing about 200g were distributed into 7 experimental groups, 7 rats each . The groups included a negative control group that was fed a normal fat diet (NFD) and a possitve control group that was fed a high fat diet (HFD) (45% calories from fat). The six treatment groups were fed a HFD for the first 4 weeks of the experiment and a HFD with 9% of one of the selected dried plants for another 4 weeks. The treatment groups are sumac, thyme, clary, gundelia, garden rocket and wild mint. Blood samples were collected from the right heart ventricle. Serum malondialdehyde, lipid profile and fasting blood glucose were measured for rats. Results showed that the addition of different dried plant powders to the HFD did not significantly affect serum levels of TG, TC, HDL, LDL and fasting blood glucose. On the other hand, malondialdehyde (MDA) levels were significantly (p &lt; 0.05) higher in the HFD group (4.09&plusmn;0.45 mmol/ml) than those of other groups. MDA serum levels for the other groups were as follows: NFD (2.47&plusmn;0.05), sumac (2.45&plusmn;0.13), thyme (2.88&plusmn;0.07), clary (2.97&plusmn;0.16), garden rocket (2.96&plusmn;0.11), gundelia (2.92&plusmn;0.16) and wild mint (2.68&plusmn;0.09). These levels were not sinificantly different from each other. It is concluded that incorporating dried plant powders in rat diets had a significantly positive effect only on lipid peroxidation assay as indicated by serum MDA levels.

scholarly journals Ozonated Aloe vera Oil Effective Increased the Number of Fibroblasts and Collagen Thickening in the Healing Response of Full-Thickness Skin Defects

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Ahsanu Taqwim Hidayat ◽  
Muhamad Thohar Arifin ◽  
Muhammad Nur ◽  
Muflihatul Muniroh ◽  
Neni Susilaningsih
Keyword(s):  
Wound Healing ◽  
Aloe Vera ◽  
Full Thickness ◽  
Sprague Dawley ◽  
Control Groups ◽  
Treatment Groups ◽  
A Value ◽  
Healing Response ◽  
Sprague Dawley Rats ◽  
Significant Difference

Objective. This study aimed to examine the effectiveness of ozonated Aloe vera oil on the wound healing response of full-thickness defect tissue in Sprague-Dawley rats, assessed by collagen thickness and the number of fibroblasts. Methods. This was an experimental research method using control groups and treatment groups with a posttest only control group design. The results showed that collagen thickness in wounds tended to increase, assessed on day 3 and day 7 using Masson’s trichrome staining and microscopic evaluation. Results. There was a significant difference in the number of fibroblasts between the two control and treatment groups on days 3 and 7 tested using one-way Kruskal–Wallis test, with a value of p = 0.001 p < 0.05 , resulting in a significant difference in wound size reduction between the groups. Further post hoc analysis using the Mann–Whitney test indicated a significant difference between the control groups and the treatment groups (P0, P1 versus P3, P4, P5, P8, P9, and P10) with a value of p = 0.009 p < 0.05 . Conclusions. Ozonated Aloe vera oil is effective in increasing the healing response of full-thickness defects, leading to the increase in the number of fibroblasts and collagen thickening that in turn accelerates wound healing in Sprague-Dawley rats.

scholarly journals FURTHER STUDIES ON THE REVERSIBILITY OF SERUM SICKNESS CHOLESTEROL-INDUCED ATHEROSCLEROSIS

1970 ◽  
Vol 132 (5) ◽  
pp. 858-867 ◽  
Author(s):  
M. Van Winkle ◽  
L. Levy
Keyword(s):  
Induction Period ◽  
Microscopic Examination ◽  
Combined Treatment ◽  
Rest Period ◽  
The Other ◽  
Lipid Deposition ◽  
Elastic Tissue ◽  
Cholesterol Diet ◽  
Treatment Groups ◽  
All Treatment

Rabbits were induced to form atheromatous cardiovascular lesions by subjecting them to treatments of a single BSA injection plus a 2-wk period of cholesterol diet, or to the diet alone. Microscopic examination of the hearts at the end of the 2-wk induction period, or after having been returned to regular diet for 5 or 8 wk, showed that lesion incidence in the cholesterol-only animall decreased markedly during the 8-wk rest period, while little change in incidence occurred in animals with lesions from the combined treatment. This finding was taken to mean that the latter type of lesion was less reversible, and therefore perhaps more pathologically significant, than the former type. It was felt that lipid deposition was not solely responsible for this prolongation, since it was present in diet-only lesions which disappeared with time, and also seemed to be disappearing from the prolonged lesions in all treatment groups. On the other hand, elastic tissue was demonstrated only in lesions arising from the combined treatment, and it is hypothesized that this feature is implicated in the prolongation of these lesions.

scholarly journals THE EFFECTS OF LEVELS OF ISOLATION, OR VARIETAL DIFFERENCES IN, HIGH FIBRE HULL FRACTION OF LOW GLUCOSINOLATE RAPESEED MEALS ON RAT OR PIG PERFORMANCE

1978 ◽  
Vol 58 (4) ◽  
pp. 743-752 ◽  
Author(s):  
J. J. KENNELLY ◽  
F. X. AHERNE ◽  
A. J. LEWIS
Keyword(s):  
Feed Intake ◽  
Average Daily Gain ◽  
Rapeseed Meal ◽  
Sprague Dawley ◽  
Crude Fibre ◽  
Gain Ratio ◽  
Sprague Dawley Rats ◽  
Significant Difference ◽  
Pig Performance ◽  
Daily Gain

Forty-eight crossbred pigs of average initial weight 21 kg were fed 10% Tower rapeseed meal (RSM) and 10% Candle RSM as partial replacements for soybean meal (SBM). Diets were formulated to be isocaloric. Pigs fed the SBM diet consumed less feed, gained significantly (P < 0.01) faster and were more efficient at converting feed to gain than those fed the RSM diets. Performance of pigs fed Candle RSM was not significantly different to that obtained with Tower RSM. In a second experiment, dehulled Tower RSM and Tower RSM hulls were mixed in amounts to produce RSM with crude fibre levels of 6.8, 10.8, 13.5 and 15.8%. The simulated RSM and Tower and Candle RSM were used to completely replace SBM in the diets of weanling (75 g) Sprague-Dawley rats. Rats fed SBM had significantly (P < 0.05) higher average daily gain (ADG) than those fed Tower or Candle RSM, or diets containing the rapeseed meats. There was no significant (P < 0.05) difference in ADG, feed intake or feed to gain ratio of rats fed either Tower or Candle RSM. Feed intake, feed to gain ratio and fecal volatile fatty acid concentrations increased while average daily gain decreased with increasing level of hulls in simulated RSM diets. There was no significant difference (P < 0.05) in thyroid weight between rats fed SBM, Tower RSM or Candle RSM.

scholarly journals Dexamethasone Suppressed LPS-Induced Matrix Metalloproteinase and Its Effect on Endothelial Glycocalyx Shedding

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Na Cui ◽  
Hao Wang ◽  
Yun Long ◽  
Longxiang Su ◽  
Dawei Liu
Keyword(s):  
Escherichia Coli ◽  
Vascular Endothelium ◽  
Free Water ◽  
Endothelial Glycocalyx ◽  
Sprague Dawley ◽  
Treatment Groups ◽  
Protein Levels ◽  
Sprague Dawley Rats ◽  
The Matrix ◽  
Rat Thoracic Aorta

The aim of this study is to determine the mechanism of sepsis-induced vascular hyperpermeability and the beneficial effect of glucocorticoid in protecting vascular endothelium. Male Sprague-Dawley rats were given either a bolus intraperitoneal injection of a nonlethal dose of LPS (Escherichia coli055:B5, 10 mg/kg, Sigma) or vehicle (pyrogen-free water). Animals of treatment groups were also given either dexamethasone (4 mg/kg, 30 min prior to LPS injection) or the matrix metalloproteinases (MMPs) inhibitor doxycycline (4 mg/kg, 30 min after LPS injection). Both activities and protein levels of MMP-2p<0.001and MMP-9p<0.001were significantly upregulated in aortic homogenates from LPS-treated rats, associated with decreased ZO-1p<0.001and syndecan-1p=0.011protein contents. Both dexamethasone and doxycycline could significantly inhibit MMPs activity and reserve the expressions of ZO-1 and syndecan-1. The inhibition of MMPs by dexamethasone was significantly lower than that by doxycycline, while the rescue of syndecan-1 expression from LPS-induced endotoxemic rat thoracic aorta was significantly higher in the dexamethasone-treated compared to the doxycycline-treatedp=0.03. In conclusion, activation of MMPs plays important role in regulating ZO-1 and syndecan-1 protein levels in LPS mediated endothelial perturbation. Both dexamethasone and doxycycline inhibit activation of MMPs that may contribute to the rescue of ZO-1 and syndecan-1 expression.

scholarly journals Oral administration of Lactobacillus casei Shirota can ameliorate the adverse effect of an acute aflatoxin exposure in Sprague Dawley rats

2018 ◽  
Vol 88 (3-4) ◽  
pp. 199-208
Author(s):  
Elham Nikbakht ◽  
Rosita Jamaluddin ◽  
S. Mohd Redzwan ◽  
Saman Khalesi
Keyword(s):  
Adverse Effect ◽  
Lactobacillus Casei ◽  
Health Effect ◽  
Acute Exposure ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Lactobacillus Casei Shirota ◽  
Probiotic Treatment ◽  
Significant Difference ◽  
Aflatoxin B

Abstract. Aflatoxin B1 (AFB1) is a toxic compound commonly found in some crops with an adverse health effect on human and animals. Some beneficial microorganisms (or probiotics) such as lactic acid bacteria have shown the ability to reduce the bioavailability of aflatoxins and its intestinal absorption. However, the dose and duration of aflatoxins exposure and probiotic treatment can influence the ability of probiotics to remove aflatoxins. Therefore, this research aimed to investigate the efficacy of oral probiotic Lactobacillus casei Shirota strain (LcS) induction in an acute exposure to AFB1 in rats. Experimentally, Sprague Dawley rats were divided into three groups: AFB1 only (n = 9); AFB1 treated with LcS (n = 9); and control (no AFB1 exposure) (n = 6) groups. The blood AFB1 level of rats treated with LcS was slightly lower than the untreated AFB1 induced rats (11.12 ± 0.71 vs 10.93 ± 0.69 ng g–1). Also, LcS treatment slightly moderated the liver and kidney biomarkers in AFB1 induced rats. However, a trend for a significant difference was only observed in ALT of AFB1 induced rats treated with LcS compared to their counterparts (126.11 ± 36.90 vs 157.36 ± 15.46, p = 0.06). Rats’ body weight decreased in all animals force-fed with AFB1 with no significant difference between LcS treatment compared to the counterpart. In conclusion, this experiment indicated that probiotic LsC was able to slightly ameliorate the adverse effect of an acute exposure to AFB1 in rats. However, future studies with longer probiotics treatment or higher probiotics dose is required to confirm these findings.

scholarly journals Effects of Aqueous Quassia amara L. (Korales) Leaf Extract on the Cardiovascular and Respiratory Functions of Male Sprague-Dawley Rats

2018 ◽  
Vol 52 (6) ◽  
Author(s):  
Maria Concepcion C. Sison ◽  
Lynn Crisanta R. Panganiban ◽  
Daisy Mae A. Bagaoisan ◽  
Nelia P. Cortes-Maramba
Keyword(s):  
Blood Pressure ◽  
Adult Male ◽  
Leaf Extract ◽  
Sprague Dawley ◽  
Treatment Groups ◽  
Respiratory Flow ◽  
Sprague Dawley Rats ◽  
Parallel Group ◽  
Aqueous Leaf Extract ◽  
Quassia Amara

Objective. To To evaluate potential effects of the aqueous extract of Quassia amara L. leaves on the cardiovascular and respiratory systems of adult male Sprague- Dawley rats. Methods. The cardiovascular and respiratory effects of the Quassia amara L. leaf extract on adult male SpragueDawley rats were assessed using non-invasive blood pressure (NIBP) determination and head-out plethysmography, respectively, in a randomized, parallel group study. Mean observations of blood pressure and heart rate were recorded at different time periods after dosing. Respiratory flow and irritation effects were evaluated using mean observations of respiratory rate (RR), tidal volume (TV), mid-expiratory flow rate (EF50), time of inspiration (TI) and expiration (TE), and time of break (TB) and pause (TP). Results. There were no significant differences among the control and the treatment groups in SBP, DBP and HR parameters. The extract showed statistically significant effect on mean RR by time period (F=2.45, p=0.0234), trends over time of TV among the dose groups (F=2.00, p=0.0202), and EF50 among dose groups ((F=3.11, p=0.0422). However, these did not correlate with the changes in the time of break (TB) and time of pause (TP) which are more sensitive and specific tests for respiratory irritation. Conclusion. Aqueous leaf extract of Quassia appeared to have no significant effects on SBP, DPB, Pulse pressure, and HR. There are no conclusive dose-related respiratory flow or pulmonary irritation effects.

scholarly journals Evaluation of the Influence of Zhenwu Tang on the Pharmacokinetics of Digoxin in Rats Using HPLC-MS/MS

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Chao Li ◽  
Dahu Liang ◽  
Yanhao Liu ◽  
Chaozhuang Shen ◽  
Xiaohu Wang ◽  
...  
Keyword(s):  
Deionized Water ◽  
Therapeutic Window ◽  
Sprague Dawley ◽  
Glycoprotein P ◽  
Active Efflux ◽  
Time Points ◽  
Sprague Dawley Rats ◽  
Combined Use ◽  
Positive Inotropic Drug ◽  
Excised Tissues

Digoxin (DIG) is a positive inotropic drug with a narrow therapeutic window that is used in the clinic for heart failure. The active efflux transporter of DIG, P-glycoprotein (P-gp), mediates DIG absorption and excretion in rats and humans. Up to date, several studies have shown that the ginger and Poria extracts in Zhenwu Tang (ZWT) affect P-gp transport activity. This study aimed to explore the effects of ZWT on the tissue distribution and pharmacokinetics of DIG in rats. The deionized water or ZWT (18.75 g/kg) was orally administered to male Sprague–Dawley rats once a day for 14 days as a pretreatment. On day 15, 1 hour after receiving deionized water or ZWT, the rats were given the solution of DIG at 0.045 mg/kg dose, and the collection of blood samples was carried out from the fundus vein or excised tissues at various time points. HPLC-MS/MS was used for the determination of the DIG concentrations in the plasma and the tissues under investigation. The pharmacokinetic interactions between DIG and ZWT after oral coadministration in rats revealed significant reductions in DIG Cmax and AUC0-∞, as well as significant increases in T1/2 and MRT0-∞. When coadministered with ZWT, the DIG concentration in four of the investigated tissues statistically decreased at different time points except for the stomach. This study found that combining DIG with ZWT reduced not only DIG plasma exposure but also DIG accumulation in tissues (heart, liver, lungs, and kidneys). The findings of our study could help to improve the drug's validity and safety in clinical applications and provide a pharmacological basis for the combined use of DIG and ZWT.

CHANGES IN SERUM LEVELS OF FOLLICLE STIMULATING HORMONE AND LUTEINIZING HORMONE SHORTLY BEFORE AND AFTER PARTURITION IN RATS

1974 ◽  
Vol 75 (3) ◽  
pp. 491-496 ◽  
Author(s):  
Junichi Mori ◽  
Hiroshi Nagasawa ◽  
Reiko Yanai ◽  
Junji Masaki
Keyword(s):  
Luteinizing Hormone ◽  
Follicle Stimulating Hormone ◽  
Serum Levels ◽  
Sprague Dawley ◽  
Appreciable Change ◽  
Serum Lh ◽  
Sprague Dawley Rats ◽  
Before And After ◽  
Average Serum ◽  
Stimulating Hormone

ABSTRACT The sequence of changes in the serum levels of follicle stimulating hormone (FSH) and luteinizing hormone (LH) from 2 days before to 24 h after parturition of primiparous Sprague-Dawley rats was investigated by radioimmunoassay. No appreciable change in average serum FSH levels was observed during 2 days before and 1 h after parturition. After this the levels increased gradually to show a peak at 7 h after parturition and then declined gradually until 24 h after parturition. However, the level at 24 h after parturition was still twice as high as that at parturition (0 h). The average serum LH levels which were low between 2 days before and 1 h after parturition, showed a peak at 7 h and decreased toward 13 h after parturition. The same levels as at parturition were maintained between 13 and 24 h after parturition. The time of surge of either FSH or LH was closely related to the time after parturition. There were some differences between FSH and LH in the patterns of sequence of changes in the serum levels near parturition.

scholarly journals Structural Alteration in Dermal Vessels and Collagen Bundles following Exposure of Skin Wound to Zeolite–Bentonite Compound

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Shahram Paydar ◽  
Ali Noorafshan ◽  
Behnam Dalfardi ◽  
Shahram Jahanabadi ◽  
Seyed Mohammad Javad Mortazavi ◽  
...  
Keyword(s):  
Healing Process ◽  
Volume Density ◽  
Skin Wound ◽  
Sprague Dawley ◽  
Small Vessels ◽  
Sprague Dawley Rats ◽  
Significant Difference ◽  
Sterile Normal Saline ◽  
Animal Skin ◽  
The Impact

Background. This study examines the impact of one-time direct application of haemostatic agent zeolite–bentonite powder to wounded skin on the healing process in rats. Materials and Methods. 24 male Sprague-Dawley rats were randomly allocated into two groups (n=12): (1) the rats whose wounds were washed only with sterile normal saline (NS-treated) and (2) those treated with zeolite–bentonite compound (ZEO-treated). The wound was circular, full-thickness, and 2 cm in diameter. At the end of the 12th day, six animals from each group were randomly selected and terminated. The remaining rats were terminated after 21 days. Just after scarification, skin samples were excised and sent for stereological evaluation. Results. The results showed a significant difference between the two groups regarding the length density of the blood vessels and diameter of the large and small vessels on the 12th day after the wound was inflicted. Besides, volume density of both the dermis and collagen bundles was reduced by 25% in the ZEO-treated rats in comparison to the NS-treated animals after 21 days. Conclusions. One-time topical usage of zeolite–bentonite haemostatic powder on an animal skin wound might negatively affect the healing process through vasoconstriction and inhibition of neoangiogenesis.

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