Search

The protective effect of Biebersteinia Multifida on diazinon-induced toxicity in male Wistar rats was investigated over 8 weeks. Impacts of diazinon (10 mg/kg daily), Biebersteinia Multifida (500 mg/kg daily), and coadministration of them on oxidative stress parameters besides hematological and biochemical indices were assessed in various groups. The gas chromatography-mass spectrometry analysis was performed to identify the antioxidant components of plant extract by comparing the mass spectra and retention indices with those given in the literature. Pseudocholinesterase level demonstrated a significant attenuation in the Biebersteinia Multifida+diazinon-treated group in comparison to the diazinon group at the end of the 8th week. Statistical significant differences in hematological and biochemical indices were detectable when the diazinon group was compared to Biebersteinia Multifida+diazinon-treated rats. While diazinon destroyed hepatic and renal functions, Biebersteinia Multifida protected the liver and kidney from diazinon toxic effects by normalizing related function indices at the end of the 8th week. By diminishing malondialdehyde and enhancing the ferric-reducing power, Biebersteinia Multifida minimized the hazardous effect of diazinon-induced oxidative stress. Following these results, the beneficial effects of Biebersteinia Multifida in reducing the toxicity of diazinon should be taken into consideration. [ABSTRACT FROM AUTHOR]

The objective of the present study was to evaluate the alterations in selected indicators of immune responses and oxidative stress of broilers fed with nano-manganese. One hundredsixty 1-day-old broiler chicks were randomly assigned into four groups with three replicates. Birds were fed the same basal diet supplemented with nano-manganese oxide, as 0.00 (control group), 50.00, 100, or 150 mg kg-1 of diet. The birds were vaccinated against avian influenza (AI), Newcastle disease (ND), infectious bronchitis (IB) and infectious bursal disease (IBD) as the standard vaccination schedule. Blood sample was taken from the brachial vein of birds on 42th day. A significant decrease in antibody titer against sheep RBC was revealed in the nanomanganese 100 and 150 groups compared to the control group. In addition, the antibody titers against IB and ND were significantly lower in the all nano-manganese groups compared to the control group. No significant difference was observed for the antibody titer against AI and oxidative stress indices among the experimental groups. The findings in the present study suggested that nano-manganese at 50.00, 100 and 150 mg kg-1 levels might suppress humoral immune response in broilers which should be taken into consideration in supplementation. [ABSTRACT FROM AUTHOR]

Altered cytokine profile and weakened immunity along with clinical or subclinical ketosis (SCK) are among the remarkable challenges around parturition. Therefore, the present study aimed to compare some inflammatory cytokines and immunologic factors between two groups of healthy and SCK cows. Serum specimens were collected from 30 clinically healthy dairy cows on the early dry period (EDP), one week before expected calving (-1w), and one week postpartum (+1W). The animals were divided into the two groups of healthy (N = 20) and SCK (N = 10) based on serum ß-hydroxybutyrate cut-off of 1.2 mmol/L on +1W. The concentrations of immunoglobulin G (IgG), interleukin-4 (IL-4), IL-10, interferon-1 (IFN-1), tumor necrosis factor-a (TNF-a), and haptoglobin (Hp) were measured by enzyme-linked immunosorbent assay. The data were statistically analyzed by mixed analysis of variance and independent samples t-test using the SPSS software. The findings demonstrated that the overall levels of IL-4 (p = 0.033), IL-10 (p = 0.049), TNF-a (p = 0.028), and Hp (p = 0.018) were significantly higher in the SCK group than the control group. Furthermore, the interaction of time × SCK had a significant influence on IL-4 (p = 0.028) and Hp (p = 0.022) levels. It was revealed that IL-4 (p = 0.008), IL-10 (p = 0.009), TNF-a (p = 0.01), and Hp (p = 0.002) were all significantly higher in the SCK group than the control group on +1W. In conclusion, SCK in dairy cattle might have a relationship with immunologic and inflammatory changes around calving. [ABSTRACT FROM AUTHOR]

The aim of this study was to elucidate the protective effect of glycyrrhizin on diazinon-induced changes in body and organ weights, blood hematology, lipid profile, biochemistry parameters and tissue markers of oxidative stress in male Wistar rats over a 7-week period. Rats were orally given sublethal dose of diazinon (10 mg/kg daily; 0.008 LD50), while glycyrrhizin (25 mg kg-1 daily) was given alone or in combination with diazinon. At the end of 7th week, statistically significant decrease of pseudocholinesterase activity was detected when diazinon- and glycyrrhizin + diazinon-treated groups were compared to the control group. Diazinon treated rats showed weight loss and organ weight changes which were comparable to other groups. There was a statistically significance in hematological indices except mean corpuscular hemoglobin (MCH) when diazinon treated group was compared to glycyrrhizin + diazinon treated rats. Glycyrrhizin protected the liver and kidney from diazinon toxic effects with significantly decrease in serum aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase and lactate dehydrogenase activities as well as ameliorated hepatic and renal function indices (such as bilirubin, total protein, albumin, BUN, creatinine glucose). In addition, glycyrrhizin minimized the hazardous effect of diazinon on plasma lipids and lipoproteins. The protective effects of glycyrrhizin were confirmed by tissue markers of oxidative stress analysis as glycyrrhizin in combination diminished malondialdehyde and glycyrrhizin alone or in combination enhanced thiol group and the ferric reducing power. In accordance to these results, our observations demonstrated the beneficial effects of glycyrrhizin in reducing the toxicity of diazinon. [ABSTRACT FROM AUTHOR]

Background: The aim of this study was to investigate the role of oxidative stress in the pathology of ovine dicrocoeliasis. Methods: During Dec 2013 - Oct 2014, seventy-two sheep (1-3 years) with liver dicrocoeliasis along with 47 healthy sheep were selected from animals admitted for slaughtering at slaughterhouse located in Neyshabour, Razavi Khorasan Province, Iran. Results: In comparison to healthy control, the malondialdehyde (MDA) level and serum total antioxidant capacity were significantly higher in the parasitized group (P<0.05). A significant increase in liver MDA concentration (P<0.05) of parasitized group was also observed. Packed cell volume (PCV), zinc, iron, total bilirubin and albumin sera levels were significantly lower in the parasitized group (P<0.05). In parasitized sheep, a significant positive correlation was seen between serum MDA concentration and the activity of aspartate aminotransferase (AST). On the other hand, the concentration of serum MDA was inversely correlated with the value of PCV. No significant differences were observed for MDA concentration and total antioxidant capacity between normal and abnormal hepatic lobes in the parasitized animals. Oxidative stress markers (MDA and total antioxidant capacity in serum and liver samples) showed no significant correlations with the extent of pathological lesions and serum variables of liver injury in the parasitized sheep. No significant correlation was observed between oxidative stress markers and the fluke's number in the parasitized animals. Conclusion: Oxidative stress may play an important role in the erythrocyte destruction in sheep naturally infected with D. dendriticum. However, no clear relationships were observed between the oxidative stress, hepatic damage and parasite burden. [ABSTRACT FROM AUTHOR]