Keywords : Oxidative stress


Haematological, oxidative stress and electrolyte alterations in puppies with canine parvoviral enteritis

Chigozie Ukwueze; Ekemini S Akpan; Romanus C Ezeokonkwo; Chika I Nwosuh; Boniface M Anene

Iraqi Journal of Veterinary Sciences, Volume 34, Issue 1, Pages 65-69
DOI: 10.33899/ijvs.2019.125582.1094

Haematological changes, oxidative stress markers and electrolyte alterations were evaluated in puppies infected with canine parvovirus type 2 (CPV-2) that were presented to veterinary hospitals and clinics in South Eastern, Nigeria. Fifty-one dogs were used for the study and they were assigned into three groups. Group I consist of 21 diarrhoeic dogs naturally infected with canine parvovirus, groups II, were 15 diarrhoeic dogs uninfected with canine parvovirus and group III, were 15 apparently healthy dogs which served as the control. Immunochromatographic (IC) test was used to screen the dogs for canine parvovirus type 2 infections. The mean red blood cell (RBC) counts, packed cell volume (PCV) and haemoglobin (HB) concentrations were significantly lower in the diarrhoeic infected than diarrhoeic non-infected and the control groups. The mean catalase (CAT) of diarrhoeic non-infected group was significantly lower than diarrhoeic infected group and the control. The mean malondialdehyde (MDA) of both diarrhoeic infected and diarrhoeic non-infected groups were significantly higher than the control. The mean serum sodium (Na+) level of the diarrhoeic non infected group was significantly lower than the diarrhoeic infected group. The mean serum potassium (K+) level was significantly lower both in diarrhoeic infected and diarrhoeic non-infected groups compared to the control groups. It was therefore concluded that the levels of oxidative stress and electrolyte alterations may not be affected by the origin or aetiology of a disease (CPV-2), but on the severity of the infection.

Experimental detection of antioxidant and atherogenic effects of grapes seeds extracts in rabbits

Shihaab Al-Bajari; Moataz Al- Akash; Hana Kh. Ismail

Iraqi Journal of Veterinary Sciences, Volume 33, Issue 2, Pages 243-249
DOI: 10.33899/ijvs.2019.162881

The aim of this study was to determine the ability of Grapes seeds (Vitis vinifera) aqueous, proteinous, non- proteinous and alcoholic extracts as antioxidant and antiatherogenic in rabbits after exposure to 0.5% H2O2 in drinking water for 30 days. The results illustrated capability of 0.5% H2O2 to initiate oxidative stress via significant decrease in Glutathione (GSH), glutathione peroxdiase (GPx), Catalase (CAT) and superoxide dismutase (SOD) level in heart and liver concomitant with significant increase in malondialhyde (MDA) in addition to decrease in high density lipoprotein- cholesterol (HDL-c) and increase low density lipoprotein- cholesterol (LDL-c) in serum of treated only with H2O2 rabbits. While rabbits treated with H2O2 associated with Grapes seeds (aqueous, proteinous, non- proteinous and alcohol) extracts for 15 days showed a significant increase of Glutathione (GSH), glutathione peroxdiase (GPx), superoxide dismutase (SOD) concentration in the heart and liver tissue as well as increase HDL-c, decrease in LDL-c and VLDL-c. While, the histolopathological examination of heart and liver tissue demonstrated that H2O2 induces, degeneration, necrosis and few inflammation foci in the liver and myocardial muscle. While the administration of (Vitis vinifera) aqueous, proteinous, non-proteinous and alcoholic extracts cause improvement in the histological picture of the liver and the myocardial muscle. It was concluded that the (Grapes extracts) aqueous, proteinous, non-proteinous and especially the alcoholic extracts can reduce the damage caused by H2O2 and this will pave the way to investigate the protective effects of the natural substances in the diseases caused by oxidative stress.

Assessment the level of some heavy metal in vital body fluids and blood parameters in lactating Awassi ewes

Ashwaq Ahmed Hassan; Rana amer asim Al Suleman agha; Ali Saeed Al-Chalabi

Iraqi Journal of Veterinary Sciences, Volume 33, Issue 2, Pages 297-301
DOI: 10.33899/ijvs.2019.162908

The aim of the study was to estimate the level of cadmium, zinc and oxidative stress parameters in serum and milk as well as the blood constituents in local at the age of 3-4 years during the spring and summer seasons. Blood and milk samples were collected from 30 ewes (15 each season). The blood samples were allocated to into two tubes, for complete blood profile study and for biochemical analysis. Milk was used for biochemical tests. Blood analysis showed a significant difference between some blood values during the two seasons represented by significant increase of total white blood number, haemoglobin concentration and packed cell volume in circulating blood of lactating ewes during summer season compared with spring season. Red blood cells number and mean corpuscular haemoglobin concentration did not change among the two seasons. Both mean corpuscular volume and mean corpuscular haemoglobin value of lactating ewe increased significantly during spring season with respect to the summer season. The serum glutathione level showed a significant elevation during spring season compared with the summer season, while, the level of malonaldehyde and peroxynitrite free radicle remain constant during the study period. There were no significant changes in the level of cadmium in serum and milk of examined ewes, while the serum level of zinc significantly higher during the spring compared to the summer season and milk zinc level remain stable during both seasons. The study concluded variations in haematological, oxidative stress biomarkers, serum and milk concentration of Zn and Cd according to lactation season in ewes.

Biochemical and histopathological study of thioredoxin reductase isolation from blood serum in normal and oxidative stress-exposed rats

A.A. Hamdon; L.A. Al-Helaly

Iraqi Journal of Veterinary Sciences, Volume 33, Issue 2, Pages 115-124
DOI: 10.33899/ijvs.2019.163243

The study included investigation of effects of the thioredoxin reductase isolated from serum of human on oxidative stress induced in rats, through histopathological examination of the heart and liver, and the measurement of the biochemical parameters, which included: thioredoxin reductase, creatine kinase, alanine aminotransferase, aspartate aminotransferase, total bilirubin, albumin and uric acid. Treating experimental animals with 1% hydrogen peroxide led to a significant increase in thioredoxin reductase, creatine kinase, aspartate aminotransferase and total bilirubin compared to control group, while a significant decrease in: albumin and uric acid, but non-significant in alanine aminotransferase. As well as, a different dose 2 and 4mgl Kg of rat body weight of isolated TrxR with 1% hydrogen peroxide improved parameter levels through decrease oxidative stress that induced in rats. The results of the histopathological examination revealed slight to moderate changes in the heart, while no distinguishing changes were observed in the heart of the group treated with hydrogen peroxide and injected with enzyme in intraperitoneally with 4 mg/ kg of rat weight compared to control group. In the liver, there was observed vascular degeneration and thickening of hepatic capsule as a result of chronic congestion and degeneration in the blood vessels which after treatment with 1% hydrogen peroxide compared to control group, but there was noticeable improvement in the liver of group treated with hydrogen peroxide and injected with the enzyme in intraperitoneally with 4 mg/kg of rat weight, and these results confirm the role of the enzyme in the protection of the body from oxidative stress, the use of the enzyme can reduce the severity of different diseases.

Impact of oxidative stress on pregnancy outcome in albino rats

R.S. Al-Naemi; Q.H. Abdullah; S.A. Ibrahim

Iraqi Journal of Veterinary Sciences, Volume 26, Issue 2, Pages 93-99
DOI: 10.33899/ijvs.2012.67475

Accumulative reports documented that oxidative stress is implicated in many human and animal diseases. However, the reports concerning the effect of oxidative stress on pregnancy outcome are limited and scarce. The objective of this study was to determine the impact of oxidative stress on pregnancy outcome and to assess the antioxidant effect of vitamin C and E on oxidative stress parameters in blood and placental tissue samples in experimental pregnant animals model exposed to oxidative stress. Wister Albino rats were used in this work to investigate the effects of oxidative stress exposure (addition of H2O2 to the drinking water) on pregnancy outcome. Rats were divided into 5 groups, as follows: Group I (included 7 normal pregnant rats which served as control group). Group II (exposed to 1 % H2O2) included 7 pregnant rats, the rats were allowed to become pregnant and received (1% H2O2) in drinking water from day 7th till the day 19th of pregnancy. Group III (exposed to 3% H2O2) included 8 pregnant rats. Same as group 2, but the rats were exposed to a higher concentration of H2O2 (3%) in drinking water. Group IV (included 8 pregnant rats). Pregnant rats received vitamins C and E without induction of oxidative stress. Group V (included 8 pregnant rats).induction of oxidative stress by 1% H2O2 with vitamins supplementation in the pregnant rats. Serum total antioxidants capacity (TAC), serum and placental tissue oxidative stress biomarker; 8-iso prostaglandin F2α (8-Isoprostane) were measured using specific ELISA kits. Also placental tissues of pregnant rats were isolated and put directly in 10% formalin prepared for histopathological examination. Results revealed a significant decrease in the median values of the body weight and total serum antioxidants capacity (TAC) in groups II and III of rats compared with the control group. A significant higher median value of TAC obtained in the groups IV and V when compared with the control group. Significant higher levels of serum and tissue Isoprostane observed in both groups II and III compared with control group. Histopathological, oxidative stress induced macroscopically degenerative with microscopical appearance of vasculitis and hemorrhage within decidua. Data of the present study demonstrated that imbalance oxidative stress status in pregnant rats occurred due to exposure to oxidant, which played an important role in the pathogenesis of abnormal pregnancy outcome. In addition antioxidants supplementation (vitamins E and C) were valuable in reducing this stress.