Oil In Wistar Rats Research Articles

Influence of kaempferol against garri meal tainted with vacuum gas oil induced nephro- and neurotoxicity

The present study investigated the defensive effect of kaempferol in the tissues of Wistar rats fed with vacuum gas oil polluted garri diet. The rats (30) were grouped into six (n = 5): Group 1: Control: Fried garri normal diet (FGND). Group 2 and 3 were given FGND and treated with 50 and 100 mg/kg b. wt of kaempferol. Group 4: Fried garri diet with vacuum gas oil (FGD-VGO) only. Group 5 and 6 were given FGD-VGO then treated with 50 and 100 mg/kg b. wt. of kaempferol. The rats were euthanized using carbon dioxide after experimental period of 28 days. The tissues (kidney and brain) were excised for biochemical assays. The results indicated a significant decrease in antioxidant markers (superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione-s-transferase, GST), Na+/K+-ATPase, percentage of fragmented deoxyribonucleic acid (DNA) and increase malondialdehyde (MDA) in the tissues of rats in group 4 compared to the other groups. However, treatment with kaempferol significantly decreased MDA level and increased antioxidant markers in the tissues of rats fed FGD-VGO. In conclusion, the data obtained may point out to kaempferol playing a crucial role as an antioxidant against garri meal tainted with vacuum gas oil in Wistar rats.

Sub-chronic Toxicity: Biochemical and Histopathological Profiling of Cincalok Oil in Wistar Rats

Sub-chronic Toxicity: Biochemical and Histopathological Profiling of Cincalok Oil in Wistar Rats

Acute and subchronic oral toxicity study of Camelina sativa oil in Wistar rats

ObjectiveThe aim of these studies was to ascertain if Camelina sativa oil is harmful in both the acute and subchronic states. MethodsWistar rats of both sexes were used in an acute toxicity test, and the fatal dosage (LD50) of oral Camelina sativa oil was greater than 27.6 g/kg bw. Rats were gavaged with Camelina sativa oil at dosages of 0.00, 0.92, 1.84, and 3.68 g/kg bw per day for 90 days. In addition, satellite groups were established in the control and high-dose groups for a 28-day recovery period. The following factors were assessed: mortality, clinical anomalies, body weight, food intake, hematological, serum biochemistry, urine, gross necropsy, and histology. ResultsThere were no observable toxicity-related changes in any of the three dosage groups. There is no toxicological relevance to the change in the high-dose hematological indicator PLT at the conclusion of the recovery period because it was within the usual range for this strain in our laboratory. The test material did not result in any pathological alterations, according to a pathological examination. ConclusionSince the results of the current study, the no-observed-adverse-effect-level (NOAEL) for Camelina sativa oil in rats has been determined to be greater than 3.68 g/kg bw.

Acute dermal toxicity study of flower essential oil from Etlingera fenzlii (Kurz.) K. Schum. in Wistar albino rats

WHO has emphasized the value of using green repellents to combat disease and supplement insecticide-based vector control strategies. These products are frequently labelled as safe which is a common misperception due to the presence of varying bioactive compounds that can either be toxic or non-toxic. Pertaining to this scenario, a scarcely studied plant Etlingera fenzlii is studied to analyse its toxicological effects on skin. The plant is endemic to Kamorta and Katchal islands of Nicobar group and Mount Harriet hill ranges of Southern Andaman. These plants are used by the Shompen tribes for their honey collection and also against stomach disorders, cough etc. It is crucial to comprehend the plant's safety levels and dose limitations considering its' proven fungicidal and mosquitocidal characteristics among their other functions. The current study evaluated the acute dermal toxicity of flower essential oil in Wistar rats in accordance with OECD recommendations. Topical application at a dose of 2000mg/kg body weight showed no signs of toxicity. Any changes in body weight, water intake, feed consumption or gross pathology were not observed in the tested animals which provide considerable evidence to support the safe topical application of the essential oil.

Antidiarrheal Activity of Dialium guineense Willd Fruit Pulp in Wistar Rats.

Objective This study is aimed at evaluating the effects of Dialium guineense Willd fruit pulp powder on diarrhea induced by castor oil in Wistar rats. Materials and Methods Three different tests were carried out. A preventive test by administration of a single dose of 250, 500, 1000, 2000, and 4000 mg/kg before the induction of diarrhea by castor oil. Another preventive test after repeated administration of Dialium guineense at 250, 500, and 1000 mg/kg/day for 8 days, before the induction of diarrhea, was done. The third test was a curative test with a single dose of 250, 500, 1000, and 2000 mg/kg after the induction of diarrhea by castor oil. Results D. guineense fruit pulp at 1000, 2000, and 4000 mg/kg administered before the induction of diarrhea, has significantly delayed diarrhea; reduced the frequency of defecation, reduced the amount of diarrheal stools, and also reduced the purging index, with a degree of inhibition comparable to that of loperamide. But the water content of the stools of the group treated with D. guineense does not change significantly compared to the controls. D. guineense has reduced significantly from 500 mg/kg the diarrhea induced by castor oil after 8 days of treatment. It appears that the doses of 250 and 500 mg/kg, which were not effective with the single-dose preventive test, significantly delayed diarrhea; reduces the frequency of diarrheal stools and also reduces the purging index. D. guineense administered, after the induction of diarrhea, by castor oil has significantly reduced the diarrhea from 250 mg/kg. Conclusion The fruit pulp of D. guineense has showed antidiarrheal activities in Wistar rats by reducing the frequency of defecation, the amount of diarrheal fecal matter emitted as well as the water content. It also delayed the onset of diarrhea and significantly reduced the purging index like loperamide.

Histomorphological Examination of Skin Wound Healing Under the Effect of Avocado Oil in Wistar Rats

Histomorphological Examination of Skin Wound Healing Under the Effect of Avocado Oil in Wistar Rats

Acute Oral Toxicity of Cincalok Oil in Wistar Rats

Cincalok is a West Kalimantan traditional fermented food that has an opportunity to be developed into supplement products as a source of omega 3 and astaxanthin. This study was designed to observe the acute toxicity of Cincalok oil in female rats for its safety profile using AOT 425 program. Cincalok oil for the acute (2000 and 5000 mg/kg) toxicity studies was administered orally according to the OECD guidelines 425. The rat’s body and organs weight were observed then signs of toxicity were assessed. LD50 was being determined at the end of the study. The result showed that a single dose of Cincalok oil at 2000 or 5000 mg/kg had no lethal effect, behavioral change, a significant change in rat’s bodyweights, or any lesion on the rat’s organs. The LD50 of Cincalok oil for oral administration was higher than 5000 mg/kg and categorized as practically non-toxic.Keywords: Acute Toxicity, Cincalok Oil, LD50.

Physicochemical characteristics, acute and subacute toxicity of cashew nut shell oil in Wistar rats

This study investigated the physicochemical characteristics of cashew nut shell oil (CNSO) as well as its acute and subacute toxicity in rats. In acute toxicity test, the CNSO was orally administered up to 3 g/kg in a single dose and thereafter toxicity signs and mortality rates were observed in the rats within 24 h. In subacute toxicity study, the experimental rats were placed into four (4) groups of 12 rats each. Group I served as control, while groups II, III and IV received daily 20, 40, 60 mg/kg of CNSO respectively for 14 days. The chemical properties of CNSO revealed iodine number (126), acid value (13.80) and saponification number (52). The peroxide value and free fatty acid were 2.80 and 6.90 respectively. The acute toxicity (LD50) of CNSO was 1000 mg/kg. A dose dependent significant decrease (p<0.05) was recorded in body weight, red blood cell (RBC), packed cell volume (PCV), haemoglobin (Hb) and platelet count in CNSO treated groups when compared to the control rats. Furthermore, white blood cell (WBC), lymphocytes, bilirubin, alkaline phosphatase (ALP), aspartate transaminase (AST), alanine transaminase (ALT), total cholesterol, triglycerides, electrolytes (Cl−, K+, Na+ and HCO3−), urea and creatinine concentrations significantly (p < 0.05) increased in the CNSO treated groups. CNSO dose-dependently decreased antioxidant enzymes (glutathione, superoxide dismutase and catalase). This study suggests that CNSO has the potentials to induce oxidative stress, cause hepato-renal toxicity and therefore may be unsafe for human and animal consumption. However, CNSO may be used in paint and plastic industries based on its physicochemical characteristics.

Evaluation of the acute and sub-acute toxicity of the black caraway seed essential oil in Wistar rats.

The aim of the present study was to evaluate the acute toxicity as lethal dose 50% (LD50) and sub-acute toxicity of the black caraway Bunium persicum (Bioss) seed essential oil in male Wistar rats. The compounds of B. persicum were identified by GC/MS and amount of each compound was evaluated. 21 different compounds were determined in the essential oil and the main components were: carvone, p-cymene, gamma-terpinene, p-cymene-8-ol, limonene, isoterpinolene, and 2-beta pinene. For acute toxicity evaluation, the animals were randomly divided into nine group (n = 6) and received 500, 1000, 1500, 2000, 2500, 3000, 3500 and 4000 mg/kg seed essential oil, respectively and the LD50 value for black caraway seed essential oil was obtained above 4000 mg/kg body weight. According to data, treatment with the black caraway seed essential oil sub-acute toxicity study attenuated histopathological changes in lung, liver, kidney, testes and spleen tissues and the results of this study show that the black caraway essential oil can not affect the immune and blood system, important enzymes and vital organs of the body..

Consumption of virgin coconut oil in Wistar rats increases saturated fatty acids in the liver and adipose tissue, as well as adipose tissue inflammation

The recommended amount of intake of virgin coconut oil (VCO) for health benefits has not been defined. This study aims to evaluate the effects of partial dietary substitution of lipid source by VCO in the health of Wistar rats. The animals were divided as: G1, 100% of soybean oil; G2, 10.4% of VCO; G3, 50% of VCO; and G4, 95% of VCO. Weight and body measurements were not affected by substitution, as well as morphometry of adipocytes, food intake and hepatic expression of PPAR-α and CPT-1 genes. VCO consumption affected the serum lipid profile in a dose-dependent way, just like the tissue incorporation of saturated fatty acids, the inflammation in adipose tissue, and the antioxidant and antimicrobial effects. Since, it was not possible to establish the best dose of VCO to be consumed, the current recommendations for the consumption of satured fatty acids should be followed.

Embryo and fetal toxicity of Mentha x villosa essential oil in Wistar rats

Context: Mentha x villosa Hudson (Lamiaceae) is an aromatic herb employed as a food spice. In folk medicine, it leaves are used as a tranquilizer and anti-hypertensive, even by pregnant women.Objective: There are no reports about its effects in gestation and exposed fetuses, the aim of this study.Materials and methods: At gestation day (GD) 01, 24 rats were divided in four groups: one control and three experimental groups (n = 6/group). The experimental groups received, by gavage, from GD06 to GD16, 10, 25 or 50 µg/kg/day of Mentha x villosa essential oil. The control group received the vehicle (Tween 80 and distilled water − 2%). The parameters of body weight gain, water and food intake were recorded. At GD20 the females were euthanized. Half of the fetuses from each litter were directed for the study of visceral malformations and the remaining fetuses for the study of skeletal malformations.Results: The statistical analyses revealed absence of alterations in body weight gain, water and food intake, litter weight, fetuses number and weight, reabsorptions and implantations. The treatment revealed absence of visceral and skeletal malformations. The visceral analysis revealed mild hemorrhagic points at brain, but more numerous at kidney, liver and blood vessels near heart, in some fetuses from some experimental litters.Conclusion: The essential oil was not able to promote impairment to the pregnant rats and to gestation. Even occurring lack of malformations, fetotoxicity was revealed by mild hemorrhagic points at liver, kidney, brain and blood vessels of some exposed fetuses.

Cytotoxic Compounds Generated in Heated Oil and Assimilation of Oil in Wistar Rats

We have previously suggested that gluten binds with decomposition products from thermally oxidized oil during frying, and that low-molecular-weight compounds bound to browned gluten damage the liver in rats. Ten-week-old male Wistar rats were fed for 11 weeks ad libitum a diet containing 7 wt% fresh frying oil and 0.1 wt% gluten heated in/without oil at 180 degrees C for 10 h. Feces collected weekly and serum were subjected to lipid and hematological analyses, respectively. Values obtained in the analyses did not differ from those of the control group. The results show that thermally processed gluten does not influence the digestion, absorption, metabolism, and growth of rats, regardless of the cytotoxic low-molecular-weight compounds, and that ingested fresh oil was assimilated normally. Together with the previous results, the odor of thermally processed gluten stimulated the rats' appetite, and completely assimilable fresh oil and cytotoxic low-molecular-weight compounds bound to gluten were ingested, and thus organ damage and rapid body weight increase were observed. As commercial deep-fried products are often made with repeatedly used oil with periodically added fresh oil, similar to the present experimental diet, obesity and organ damage may also occur in humans.

Effects of Deteriorated Frying Oil in Wistar Rats

Effects of Deteriorated Frying Oil in Wistar Rats

Study on change of SCC Ag, CEA and CA15-3 in rat model of lung squamous cell carcinoma

To evaluate significance of squamous cell carcinoma associated antigen (SCC Ag) and carcinoembrynoic antigen (CEA) and carbohydrate antigen 15-3 (CA15-3) in early diagnosis of lung squamous cell carcinoma Lung squamous cell carcinoma was induced with methylcholanthrene (MCA) in iodized oil in Wistar rats. Ninty-one rats were used for this experiment, and the rats were sacrificed on the 20th, 40th, 50th, 60th, 70th and 80th days respectively. The stage of the cancer development including atypical hyperplasia, carcinoma in situ, early invasive carcinoma was diagnosed histopathologically. SCC Ag, CEA and CA15-3 in the serum of different conceration stage rats were measured by MEIA technique. Serum levels of SCC Ag, CEA and CA15-3 of the model rats in the atypical hyperplasia and carcinoma in situ had no significant difference. The level of SCC Ag increased predominantly at the early invasive carcinoma(P<0.01), but the other two markers had no change. SCC Ag level in serum may be of considerable importance in the early diagnosis of lung squamous cell carcinoma.

Antidiarrhoeal activity of Waltheria americana, Commelina coelestis and Alternanthera repens

The antidiarrhoeal activity of the hexane, chloroform, methanol and aqueous extracts of Waltheria americana, Commelina coelestis and Alternathera repens, was tested on mice with diarrhoea induced by castor oil and MgSO 4. The methanol extract of C. coelestis and A. repens and aqueous extract of A. repens, presented antidiarrhoeal effect, monitored by number of liquid feces defecated and intestinal transit of a suspension of graphite with castor oil in Wistar rats.