The relationship of metabolic parameters and milk acute-phase protein with the outcome of treatment of Staphylococcus aureus subclinical mastitis in dairy cows.

The main aim of the current investigation was to evaluate the relationships between metabolic parameters, acute-phase proteins, and the outcome of treatment of Staphylococcus aureus subclinical mastitis in dairy cows. Serum metabolic parameters and milk haptoglobin were measured in two groups: S. aureus subclinical mastitis cows with successful treatment (n = 26) and S. aureus subclinical mastitis cows with unsuccessful treatment (n = 26). Significantly higher serum aspartate aminotransferase (AST), alkaline phosphatase (ALP), and LDL cholesterol concentrations were seen in subclinical mastitis cows with unsuccessful treatment compared to subclinical mastitis cows with successful treatment (p < 0.05). On the other hand, subclinical mastitis cows with successful treatment demonstrated higher serum iron and copper concentrations than the other group (p < 0.05). Comparison of measured variables before treatment revealed that cows suffering from subclinical mastitis with higher values of serum LDL cholesterol, ALP, and AST did not respond to antibiotic treatment and subclinical mastitis was persisted in the second examination, whereas subclinical mastitis cows with successful treatment demonstrated higher serum copper and iron concentrations (p < 0.05). The findings of the current investigation suggested that there was a relationship between the treatment outcome of S. aureus subclinical mastitis and trace element concentrations and liver health status. Furthermore, the present study provided cutoff values for serum LDL cholesterol, AST, ALP, iron, and copper, which would help predict the treatment outcome in cows with S. aureus subclinical mastitis.

The effects of Zataria multiflora aromatic water and nano emulsion of Z. multiflora essential oil on the serum level of IFN-γ and IL-4 in mice with hydatidosis.

The aim of the present investigation was to evaluate the impacts of Zataria multiflora aromatic water (ZMAW) and nano emulsion (NE) of Z. multiflora essential oil (ZMEO) on IL-4 (Th2-derived cytokine) and IFN-γ (Th1-derived cytokine) concentrations in mice with hydatidosis. Sixty four healthy BALB/c female mice were intraperitoneally injected by 1500 live protoscoleces of Echinococcus granulosus. Five month after injection, the infected mice were divided into seven treatment groups, including: Albendazole (100 mg/kg), ZMAW (100 ml/L), Albendazole 100 + ZMAW (Albendazole 100 mg/kg and ZMAW 100 ml/L), Albendazole 50 + ZMAW (Albendazole 50 mg/kg and ZMAW 100 ml/L), Albendazole 100 + NE of ZMEO (Albendazole 100 mg/kg and NE of ZMEO 10 ml/L), albendazole 50 + NE of ZMEO (albendazole 50 mg/kg and NE of ZMEO 10 ml/L) and the control group with no treatment. The mice received the ZMAW, NE of ZMEO and/or albendazole through drinking water for 90 days. At the end of treatment (90 days), blood specimens were harvested from all mice. A significant reduction in IL-4 concentration was revealed in the albendazole 50 group + NE of ZMEO, when compared to the control group (P < 0.05). No significant difference was noticed for the IFN-γ concentration between the trial groups. Increased IFN-γ: IL-4 ratio was observed in the albendazole 50 + ZMAW, Albendazole 50 + NE of ZMEO, Albendazole 100 + NE of ZMEO groups in comparison with the control group (P < 0.05). The findings observed in the current study showed that the administration of ZMAW and NE of ZMEO along with albendazole could enhance the IFN-γ: IL-4 ratio (Th1/Th2 balance), which may have therapeutic value in the treatment of hydatid disease.

Effects of Allium sativum on IFN-γ and IL4 concentrations in mice with cystic echinococcosis.

The aim of the current investigation was to assess the impacts of methanolic extract of Allium sativum (MEAS) on IL-4 (a cytokine derived from Th2 cells) and IFN-É£ (a cytokine derived from Th1 cells) levels in mice infected with Echinococcus granulosus. Sixty healthy BALB/c female mice were used in this study. Each animal was intraperitoneally injected with 1500 protoscoleces. The infected animals were randomly divided into six groups: albendazole (100 mg/kg), MEAS 10 (10 mg/kg), MEAS 20 (20 mg/kg), MEAS 40 (40 mg/kg), MEAS 80 (80 mg/kg) and control group with no treatment. The studied animals received albendazole and/or MEAS through drinking water for 30 days. Serum IFN-γ concentration significantly increased in the MEAS 20 and 80 groups in comparison to the control, albendazole and MEAS 10 groups (P < 0.05). The serum IL-4 level showed no significant difference between the trial groups. The findings of this study showed that MEAS at 20 and 80 mg/kg concentrations enhanced Th1 cell response in mice with cystic echinococcosis.

Allium Sativum Methanolic Extract (garlic) Improves Therapeutic Efficacy of Albendazole Against Hydatid Cyst: In Vivo Study.

After gas chromatography and mass spectrometry of prepared methanolic extract of Allium sativum, 40 laboratory BALB/c mice were infected intraperitoneally by injection of 1,500 viable protoscoleces. Five months after infection, the infected mice were allocated into four treatment groups, including 1- Albendazole (100 mg/kg); 2- Allium sativum methanolic extract (10 mL/L); 3- A. sativum methanolic extract (10 mL/L) + Albendazole (50 mg /kg); and 4- untreated control group. After 30 days of daily treatment, total number and weight of cysts and size of the largest cyst as well as blood serum bilirubin and liver enzymes were compared between the mice of different groups.The total number and weight of cysts and size of the largest cyst were significantly lower in treated groups A. sativum 10 mL/L + Albendazole 50 and Albendazole 100 in comparison to those of the control group (p < 0.05).The activity of alanine aminotransferase (ALT) enzyme and bilirubin concentration were significantly lower in the mice treated with A. sativum 10 mL/L and A. sativum 10 mL/L + Albendazole 50, when compared to the control group. In addition, bilirubin concentration revealed significant decrease in A. sativum 10 mL/L and A. sativum 10 mL/L + Albendazole 50 groups, when compared to the Albendazole group. In conclusion, administration of A. sativum 10 mL/L improved the anti-hydatidosis activity of Albendazole 50 mg /kg, due to parasitological effects similar to Albendazole 100 mg /kg but less hepatotoxic effects.

In vivo therapeutic efficacy of the Allium sativum ME in experimentally Echinococcus granulosus infected mice.

Plant-based anthelmintics suggest an alternative treatment for cystic echinococcosis. The present study was conducted to evaluate the efficacy of methanolic extract (ME) of A. sativum (garlic) on the treatment of hydatid cysts in the murine model. After gas chromatography and mass spectrometry of prepared ME, sixty laboratory BALB/c mice were infected intraperitoneally by injection of 1500 viable protoscoleces. Five months after infection, the infected mice were allocated into six treatment groups, 1- Albendazole (100 mg/kg); 2- Allium sativum ME (10 mL/L); 3- A. sativum ME (20 mL/L); 4- A. sativum ME (40 mL/L); 5- A. sativum ME (80 mL/L) and 6- untreated control group. After 30 days of daily treatment, the total number of cysts, size and weight of the largest cyst were significantly lower in three treated groups including A. sativum ME 80 mL/L, A. sativum ME 40 mL /L and albendazole in comparison to those of the control group (p < 0.05). The activity of alanine amino transferase (ALT) enzyme, as well as bilirubin concentration were significantly lower in the mice treated with A. sativum ME 80, 40, 20 and 10 mL/L when compared to the control group. In addition, bilirubin concentration revealed significant decrease in A. sativum ME 10, 20 and 80 mL/L groups, when compared to the albendazole group. In conclusions, administration of A. sativum ME used at 40 and 80 mL/L concentrations might be beneficial in the treatment of CE due to anti-parasitic effects similar to albendazole but less hepatotoxic effects.

Canine visceral leishmaniosis: the relationship of blood serum thyroid hormones, lipids, and lipoproteins with clinical status.

The objective of the present study was to investigate the role of thyroid hormones and lipid profile in development and outcome of canine visceral leishmaniosis (CVL). We therefore studied the relationships between blood serum thyroid hormones [total T4, free T4, total T3, and free T3], lipids, and lipoproteins [total cholesterol, triglyceride, low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C)] and clinical status in dogs naturally infected with Leishmania infantum. Two groups of Leishmania-infected dogs [with no clinical signs (NCS; n = 15), and with clinical signs (CS; n = 16)] were assessed and compared with a group of healthy control dogs (n = 15). A significant decrease in serum total T4 (p < 0.05) concentration in the CS group was observed when compared to the NCS and control groups. The dogs in CS group revealed a significant decrease (p < 0.05) in free T4 concentration in comparison to the control group. The CS group presented a significant decrease in HDL-C (p < 0.01) concentrations, when compared to NCS and control groups. The observed findings in the present study suggested that thyroid hormone and lipoprotein alterations may have a role in susceptibility of dogs with Leishmania infection.

Zataria multiflora would attenuate the hepatotoxicity of long-term albendazole treatment in mice with cystic echinococcosis.

Hepatic injury is the major limitation of long-term albendazole administration in patients with cystic echinococcosis (CE), which could give rise to cessation of treatment. The objective of the present study was to evaluate the protective effects of Zataria multiflora aromatic water (AW) against the hepatic injury induced by long-term albendazole treatment in mice with CE. Fifty healthy BALB/c female mice were infected intraperitoneally by injection of 1500 protoscoleces per animal. Five months after infection, the infected animals were divided into five treatment groups including Z. multiflora (40ml/l in drinking water for 90days), albendazole (200mg/kg/day for 90days), Z. multiflora+albendazole 200 (40ml/l Z. multiflora and 200mg/kg/day albendazole for 90days), Z. multiflora+albendazole100 (40ml/l Z. multiflora and 100mg/kg/day albendazole for 90days), and untreated (control) group. At the end of the treatment period, anesthesia was performed and blood samples were collected directly from the heart prior to euthanasia. Liver variables and oxidative stress markers were measured in the blood serum samples. A decrease in serum liver enzyme activity in the both Z. multiflora+albendazole groups was observed when compared to control, Z. multiflora and albendazole groups; however, the results for Z. multiflora+albendazole 100 were significant (p<0.007) and superior compared to those for Z. multiflora+albendazole 200. No significant differences for oxidative stress markers were observed between the different groups. The results of the present study revealed that a combined therapy with Z. multiflora AW and albendazole is effective against hepatic injury induced by CE and/or long term albendazole administration in mice with cystic echinococcosis.

Permethrin-induced oxidative damage in liver of rainbow trout (Oncorhynchus mykiss) and its attenuation by vitamin C.

The objective of this study was to investigate the propensity of permethrin (PTN) to induce oxidative stress and changes in enzyme activities in liver of rainbow trout and its possible attenuation by vitamin C. Forty-eight fish were randomly assigned to 1 of 6 treatment groups and their livers were used for liver perfusion method: control (0 µgL(-1) permethrin and 0 mgL(-1) vitamin C), PTN-0.16 (0.16 µgL(-1) permethrin), PTN-0.32 (0.32 µgL(-1) permethrin), PTN-0.64 (0.64 µgL(-1) permethrin), Vit. C (17.2 mgL(-1) vitamin C), and PTN-0.64 + Vit. C (0.64 µgL(-1) permethrin and 17.2 mgL(-1) vitamin C). Results obtained showed that permethrin significantly (P<0.05) increased ALT, AST and LDH activities in the liver perfusion medium and malondialdehyde (MDA) level in liver tissue. The values of reduced glutathione (GSH) and total antioxidant capacity (FRAP) in the liver tissue were significantly decreased due to permethrin administration. Pearson's correlation analysis revealed a positive correlation between MDA concentration and ALT, AST and LDH activities in the permethrin groups, suggesting that the enhanced lipid peroxidation may be linked to hepatic damage caused by permethrin. On the other hand, treatment with vitamin C in the PTN-0.64 + Vit. C group increased the values of GSH and FRAP, and decreased the level of MDA and the activities of hepatic enzymes, when compared to the PTN-0.64 group. The present study revealed that vitamin C could ameliorate permethrin-induced oxidative damage by decreasing lipid peroxidation and altering antioxidant defense system in liver of rainbow trout.

Methylmercury-induced oxidative stress in rainbow trout (Oncorhynchus mykiss) liver: ameliorating effect of vitamin C.

The present study was undertaken to evaluate methylmercury-induced alterations in hepatic enzymes and oxidative stress markers in liver tissue of rainbow trout (Oncorhynchus mykiss) by using a perfusion method, and to explore possible protective effect of vitamin C against these alterations. Forty-eight fish were divided into six groups containing control, test, and amelioration groups. The liver of fish in the test groups were exposed to different doses of methylmercury, i.e., 0.6, 1.2, and 2.4 µg L(-1), respectively, for 120 min. In the amelioration group, liver was treated with vitamin C (17.2 µg L(-1)) along with high dose (2.4 µg L(-1)) of methylmercury. The results of the present study showed that exposure with 0.6, 1.2, and 2.4 µg L(-1) of methylmercury significantly increased (p < 0.05) hepatic enzyme activities (alanine transaminase (ALT), aspartate transaminase (AST), and Lactate dehydrogenase (LDH)) and malondialdehyde (MDA) level, as a marker of lipid peroxidation. On the other hand, the concentration of reduced glutathione (GSH) and total antioxidant capacity of the liver decreased (p < 0.05) in the methylmercury-exposed groups when compared to the control group. Pearson's correlation analysis revealed a positive correlation between MDA concentration and ALT, AST, and LDH activities in the methylmercury groups, suggesting that the enhanced lipid peroxidation may be linked to hepatic damage caused by methylmercury. Treatment with vitamin C in methylmercury-exposed group led to a significant decrease (p < 0.05) in MDA concentration and hepatic enzyme activities and significant increase (p < 0.05) in levels of GSH and total antioxidant capacity. The values of measured parameters in the methylmercury + vitamin C group were comparable to those of the control group. The results of the present study demonstrated that methylmercury exposure induces oxidative stress in the liver of rainbow trout and treatment with vitamin C can protect fish liver against this oxidative insult.

Oxidative stress in the gill tissues of goldfishes (Carassius auratus) parasitized by Dactylogyrus spp.

The aim of this study was to investigate the status of oxidative stress in the gill tissues of goldfishes (Carassius auratus) parasitized by Dactylogyrus spp. We therefore compared the concentrations of malondialdehyde (MDA) and total thiol groups in the gill tissues of parasitized and non- parasitized goldfishes. 15 goldfishes parasitized by Dactylogyrus spp. along with 15 non-parasitized goldfishes were selected for the study. A significant increase in MDA concentration (P < 0.01) and a significant decrease in total thiol groups in the parasitized group, were observed when compared to the non- parasitized group. This is the first study which evaluates the effect of Dactylogyrus spp. on the oxidative stress status of goldfish. The results of the present study revealed that parasitized goldfishes showed more severe oxidative stress and lipid peroxidation than non- parasitized fishes and enhanced lipid peroxidation may be linked to gill damage in goldfishes parasitized by Dactylogyrus spp.

Oxidant/antioxidant status in cattle with liver cystic echinococcosis.

The objective of the present study was to evaluate the changes of antioxidants and oxidative stress markers in cattle with cystic echinococcosis (CE). Thirty cattle with liver CE along with 30 healthy cattle were used for the study. Parasitized cattle presented a significantly higher lipid peroxidation assessed by the malondialdehyde (MDA) compared with healthy animals (P<0.05). A significantly lower erythrocyte superoxide dismutase (SOD) and glucose 6-phosphate dehydrogenase (G6PD), and a significantly higher erythrocyte glutathione peroxidase (GPx) in the parasitized group, were observed when compared with healthy group (P<0.05). No significant differences were observed for serum total antioxidant status (TAS), zinc, copper and iron between parasitized and healthy groups. The results obtained in this study suggest that CE in cattle induces changes in the activity of antioxidant enzymes. These changes render host cells susceptible to oxidants and exaggerate the generation of free radicals with a consequent lipid peroxidation enhancement.

Acute-phase protein concentration and metabolic status affect the outcome of treatment in cows with clinical and subclinical endometritis.

The aim of this study was to investigate the role of acute-phase protein concentration and metabolic status in the establishment and resistance of clinical endometritis (CE) and subclinical endometritis (SE) in dairy cows. We also characterised the treatment-related changes in the concentration of acute-phase proteins and metabolic variables in dairy cows affected by CE and SE. Cows of the SE and CE groups presented a significantly higher ß-hydroxybutyrate (BHB), haptoglobin and total sialic acid (TSA) concentrations compared with a healthy group of animals. A significantly lower serum calcium concentration, and a significantly higher serum aspartate aminotransferase activity in the CE group, were observed when compared with SE and healthy groups. The comparison of parameters before treatment indicated that cows suffering from CE or SE with lower concentrations of hepatic and inflammatory markers showed a better response to further treatment, and endometritis was not detected in the second examination. Moreover, decreased concentrations of BHB, acute-phase proteins and hepatic markers were observed after successful treatment for endometritis in CE and SE cows. The results obtained in this study suggest that improved liver function and a decrease in the acute-phase protein concentration might favour the resolution of endometritis after treatment.

Chemiluminescence characteristics of furan derivatives as blue fluorescers in peroxyoxalate-hydrogen peroxide system.

Furan derivatives (synthesized and purified in organic laboratories) are a great interest as fluorescent emitters for peroxyoxalate chemiluminescence. Reaction of peroxyoxalates such as bis-(2,4,6-trichloro-phenyl) oxalate with H(2)O(2) can transfer energy to fluorophore via formation of dioxetanedione intermediate. Furan derivatives used as a novel fluorescer in this study which produces a blue light in the chemiluminescence systems. The relationship between the chemiluminescence intensity and concentrations of TCPO, sodium salicylate, hydrogen peroxide and the fluorescer has been investigated. The linear ranges for Furan derivatives were 0.25-5 × 10(-4) M and 0.1-5 × 10(-4) M (A and B compounds, respectively). Kinetic parameters for the peroxyoxalate-chemiluminescence were also calculated from the computer fitting of the corresponding chemiluminescence intensity/time profiles.

Canine visceral leishmaniasis: relationships between oxidative stress, liver and kidney variables, trace elements, and clinical status.

The aim of this study was to investigate the role of oxidative stress in the pathology of canine visceral leishmaniasis (CVL). We therefore studied the relationships between oxidative stress markers, liver and kidney variables, trace elements, and clinical status in dogs naturally infected with Leishmania infantum. Two groups of Leishmania-infected dogs [asymptomatic (AD, n = 14) and symptomatic (SD, n = 16)] were assessed and compared with a group of non-infected control dogs (CD, n = 30). A significant decrease (p < 0.001) in serum total antioxidant status (TAS) and albumin concentration (p < 0.05) and a significant increase in serum malondialdehyde (MDA) and blood urea nitrogen (BUN) concentrations (p < 0.001), in the SD group, were observed when compared to CD and AD groups. Dogs of the AD group presented a significant decrease in copper (p < 0.01) and zinc (p < 0.001) concentrations, when compared to CD group, while the SD group presented a significant decrease (p < 0.001) in copper and zinc concentrations, when compared to CD and AD groups. Oxidative stress markers (MDA and TAS) showed significant correlations (p < 0.001) with trace elements (copper and zinc) and liver (alanine aminotransferase) and kidney (BUN and creatinine) variables. The results of the present study revealed that symptomatic dogs showed more severe oxidative stress than asymptomatic and non-infected dogs and enhanced lipid peroxidation may be linked to liver and kidney damage in canine visceral leishmaniasis.

Oxidative stress and trace elements in camel (Camelus dromedarius) with liver cystic echinococcosis.

Status of certain oxidative stress indices and zinc, copper and iron concentrations in blood were estimated in camel with liver cystic echinococcosis. In comparison to healthy control, the index of serum lipid peroxidation assessed by the malondialdehyde (MDA) level was significantly higher in the parasitized group. However, mean serum total antioxidant status (TAS) and erythrocyte glutathione peroxidase (GPx) were significantly lower in the parasitized group. Serum zinc concentration in camels with liver cystic echinococcosis was significantly lower than healthy control. In parasitized camels, a significant positive correlation of MDA with gamma-glutamyl transferase (GGT), aspartate aminotransferase (AST) and bilirubin was observed. By contrast, MDA was inversely correlated with the values of packed cell volume (PCV), serum albumin and zinc. From the present study, it was concluded that cystic echinococcosis in camel is associated with oxidative stress. The resulting oxidative stress seems to have a role in the injury of hepatocytes, changes of trace elements and destruction of erythrocytes.

Biomechanical effects of surgical cut direction in unilateral mandibular lengthening by distraction osteogenesis using a finite element model.

Although the precise prediction of the results before distraction is important, performing three-dimensional (3D) simulations for all distraction osteogenesis patients is not practical. Formulating general guidelines based on the factors affecting the 3D results of distraction treatment is recommended. This study was performed on a 3D mandible based on a finite element method. Three surgical cuts (oblique, vertical and horizontal) were made in the right side of the mandible. The amount and direction of movement of proximal and distal segments were evaluated after simulation of 15 mm of distraction. In the distal segment, the maximum displacement in the pogonion occurred in the vertical cut. In the proximal segment, the maximum displacement occurred in the coronoid process in horizontal and oblique cuts in a superior direction. The condylar process rotated in the clockwise direction when the vertical cut was used and the coronoid process moved inferiorly. To make the gonial angle more prominent the vertical cut should be used. A horizontal cut is used to lengthen the ramus. Vertical and oblique cuts can be used in patients with long anterior facial height, but all other conditions being equal horizontal cuts are better used in short faced patients.