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Effects of dietary fish oil replacement with vegetable oils on physical and sensorial qualities and shelf life of rainbow fillet were investigated. Color did not change in red muscle, while white muscle was redder (a* 0.88) in hazelnut oil-fed fish. Red muscles from fish oil-fed fish had higher lipid peroxidation in all cases, while dietary hazelnut oil decreased lipid peroxidation and increased α-tocopherol content. General acceptance by consumers did not change among treatments. Overall, fish oil replacement did not cause any remarkable inconvenience in sensory attributes, on the contrary, dietary vegetable oils, especially hazelnut oil, increased oxidative stability during storage. [ABSTRACT FROM AUTHOR]

In this research, it was aimed to determine the effects of imidacloprid on 8-hydroxy-2-deoxyguanosine (8-ohdg) and antioxidant parameters in the liver and gill tissues of rainbow trout (Oncorhynchus mykiss). Three different concentrations (5 mg/L, 10 mg/ L and 20 mg/L) of the imidacloprid were routinely exposed to rainbow trout for 21 days. Antioxidant enzymes, malondialdehyde (MDA) and 8-hydroxy-2-deoxyguanosine (8-OHDG) were studied in the samples. In the 5 mg/L experimental group, it was determined that CAT values and liver GPx and SOD levels increased compared to those in the control group. It was found that there were significant increases between 5 mg/L and 10 mg/L dose groups of MDA, 8-OHdG, liver GPx-SOD and gill CAT-GPx enzyme activities (p < 0.05). High increases in all antioxidant enzyme levels were observed in liver and gill tissues of fish exposed to 20 mg/L dose imidacloprid. 8-OHdG and MDA levels significantly increased in parallel with the increase in the dose (p <0.05). These results suggested that imidacloprid can be toxic to fish by leading to an increase in 8-OHdG activity and changes in oxidative stress parameters. Therefore, these data may reflect one of the molecular pathway that play roles in imidacloprid toxicity. [ABSTRACT FROM AUTHOR]

The aim of this study was to investigate neurophysiological responses in rainbow trout brain tissue exposed to natural/botanical pesticides. Fish were exposed to botanical and synthetic pesticides over a 21-day period. At the end of the treatment period, oxidative DNA damage (indicated by 8-OHdG (8-hydroxy-2'-deoxyguanosine), AChE activity (acetylcholinesterase) and transcriptional parameters (gpx (glutathione peroxidase), sod (superoxide dismutase), cat (catalase), HSP70 (heat shock protein 70) and CYP1A (cytochromes P450)) was investigated in control and application groups. Our results indicated that brain AChE activities decreased very significantly in fish treated with both insecticide types when compared with control (p < 0.05). 8-OHdG activity increased in a dose/time-dependent situation in the brain tissues of Oncorhynchus mykiss (p < 0.05). In addition, with regards to gene expression, gpx sod and, cat expressions were down-regulated, whereas CYP1A and HSP70 gene expression were up-regulated in fish treated with both insecticides when compared to the control group (p < 0.05). The data for this study suggests that bio-pesticides can cause neurophysiological changes in fish brain tissue. [ABSTRACT FROM AUTHOR]

Boric acid (BA) is an essential nutrient for plants and many organisms, but it has become an environmental contaminant because of widespread use. Pesticide and its compounds are a serious threat to aquatic organisms. This study was carried out to determine the histopathological effects of acute exposure to BA concentrations in rainbow trout. The fish were exposed to 102and 103mg/L concentrations of BA. Tissues were sampled at 6, 12, 24, 48 and 96 h. Histopathological alterations occurring in tissues were common in both doses of BA. Gill tissues showed lamellar oedema, cellulary infiltration, lamellar disorganization, degenerative changes and lamellar thickening. Kidneys had glomerular oedema and glomerulonephritis, degeneration of the tubulary epithelium, interstitial fibrosis and a hyaline cast within the tubular lumens. Muscle tissues displayed interstitial oedema and degenerative and atrophic changes to varying degrees in the myofibrils. Our study shows that BA can be toxic for rainbow trout and cause histopathological damage in fish tissue. [ABSTRACT FROM PUBLISHER]

Chlorpyrifos is widely used to control agricultural pests associated with fruit, nut and vegetable crops, despite its toxic effects and potential brain alterations in aquatic organisms. This study was carried out to determine thein vivoandin vitroeffects of chlorpyrifos on rainbow trout brain acetylcholinesterase (AChE) enzyme activity. The fish were exposed to 2.25 µg/L (25% of 96 h LC50), 4.5 µg/L (50% of 96 h LC50) and 6.75 µg/L (75% of 96 h LC50) of chlorpyrifos for 24, 48, 72 and 96 h.In vitrostudies, inhibition constants (Ki) and half-maximal inhibitory concentration (IC50) values for chlorpyrifos were determined by Lineweaver–Burk graphs and by plotting activity percentage vs. [I], respectively. Enzyme activities were determined by a colorimetric method. In fish exposed to chlorpyrifos 2.25 and 4.5 µg/L, enzyme inhibition was not observed (p> 0.05); however, chlorpyrifos exposure to 6.75 µg/L for 72 and 96 h caused a significant decrease in enzyme activity (p< 0.05). The IC50value of chlorpyrifos was found to be 30 µg/L. These results show that chlorpyrifos may cause direct cellular injury in the brain, and suggest that AChE may be used as a bioindicator for toxicological studies. [ABSTRACT FROM PUBLISHER]

Haloperidol, a typical antipsychotic, is the most commonly prescribed medication for the treatment of mental health problems such as agitation and psychosis. We attempted to determine the effects of haloperidol treatment on the kidneys of female rats. In addition, we aimed to estimate the numerical density, total number, and height of renal glomeruli and the volume and volumetric fractions of the cortex, medulla, and whole kidneys, and tried to determine whether there was a change in these stereological parameters depending on haloperidol treatment. Both the qualitative and quantitative histological features of the kidney samples were analyzed with conventional histopathological and modern stereological methods at the light microscopic level. The total number of glomeruli and numerical density of glomerulus in the haloperidol-treated groups was not changed by increasing the dose in comparison to the control group. The mean height of the glomerulus significantly increased, especially in low-dose groups. In the haloperidol-treated groups, the volumetric fractions of the cortex to the whole kidney of the rats were significantly decreased by increasing the dose. The volumetric fractions of the medulla to the whole kidney of the rats were increased significantly in parallel by the given dose. In addition, we present quantitative findings showing that haloperidol is associated with many alterations in rat kidneys. It was shown that haloperidol may lead to undesirable changes in the kidney after chronic treatment with especially high doses. [ABSTRACT FROM AUTHOR]

Backgrounds. A short time ago, commercially available diafiltration and replacement fluids could be found o n the hospital in Turkey. Instead, peritoneal dialysis solution (PDS) for continue veno-venous hemodiafiltration (CVVHDF) therapy and normal saline as replacement fluid are used. In this retrospective study, we investigated the effects of PDS and bicarbonate-buffered hemofiltration solution (Bic-HFS). Methods. We did a retrospective chart review of 24 patients treated with continue renal replacement therapy (CRRT) between January 2004 and February 2008. Peritoneal dialysis solution (PDS) was used in 14 patients, and bicarbonate-buffered hemodialysis solution (bic-HFS) was used in 10 patients. Results. Demographic data, laboratory findings, and mortality rate were similar both groups. Blood glucose and lactate levels were higher in the PD group than the bic-HFS group (p < 0.05). Hyperglycemia occurred more frequent in the PDS group than in the bic-HFS group (64% versus 30%, respectively; p < 0.05). Metabolic acidosis occurred in eight patients (57%) in the PDS group and three patients (30%) in the bic-HFS group (p < 0.05). Hypotension was higher in the PDS group (10, 71%) than in the bic-HFS group (3, 30%; p < 0.05). Conclusion. Using PDS fluid as dialysate for CVVHDF therapy is not a preferable solution because of the metabolic disturbances that it can cause. [ABSTRACT FROM AUTHOR]

Background. Coronary artery bypass grafting (CABG) with cardiopulmonary bypass (CPB) has the risk of renal dysfunction. The cause of renal dysfunction after CPB is multifactorial, such as nonpulsatile flow, renal hypoperfusion, hypothermia, and duration of CPB. This study compared off-pump technique with on-pump technique on renal function in patients who underwent CABG. Methods. Sixty patients with normal preoperative renal functions undergoing CABG were randomly assigned to conventional revascularization with CPB (on-pump) or beating heart revascularization (off-pump). Renal functions were assessed up to 10 days postoperatively. Results. Creatinine clearance was found to be significantly higher in the off-pump group than in the on-pump group ( p<.05). The off-pump group had significantly less increase in creatinine levels when compared with the on-pump group ( p<.05). The free water clearance values decreased similarly in both groups; however, the recovery was more prompt in the off-pump group (p<.05). No significant differences were found in the prevalence of postoperative hemodialysis. Conclusion. The off-pump technique may provide a positive contribution and sufficient protection on postoperative renal functions in patients undergoing CABG. [ABSTRACT FROM AUTHOR]

Our purpose was to compare the effects of patient-controlled analgesia (PCA) with intravenous (i.v.) and epidural morphine on pulmonary function and their analgesic efficacy and side effects after upper abdominal surgery. In a prospective study, patients were randomly allocated to receive either thoracic epidural (n = 20) or intravenous (n = 20) patient-controlled analgesia with morphine. Preoperatively and at 24 and 48 h after surgery, arterial blood-gas analysis, forced vital capacity (FVC), and forced expiratory volume in 1s (FEV[sub 1]) were measured, and chest X-ray films were taken from all patients. Pain (at rest), morphine consumption, nausea and vomiting, pruritus, and respiratory rate were recorded during the first 48 postoperative hours. In this period, the amount of morphine that was used in the epidural PCA group (28.5 ± 7.4 mg) was significantly lower than in the i.v. PCA group (49.4 ± 27.0 mg). Pain scores were similar in the two groups. Throughout the study no differences were found in pHa, PaCO[sub 2], PaO[sub 2], FVC or FEV[sub 1] between epidural and i.v. morphine groups. When compared with preoperative data, at 24 and 48 h after surgery, FVC, FEV[sub 1], and PaO[sub 2] decreased significantly in both groups (p < 0.05). Except pruritus, incidence of side effects occurred similarly in the two groups. In this study, we found no difference between the effects of epidural and i.v. administration of morphine with PCA on pulmonary function and analgesic efficacy. [ABSTRACT FROM AUTHOR]