جستجوی مقالات مرتبط با کلیدواژه "deuterium depleted water" در نشریات گروه "زیست شناسی"

Sepsis is a major cause of morbidity and mortality in patients in the intensive care unit. Despite new supportive treatments and administration of high potent antibiotics, sepsis is overwhelmingly one of the risky factors in patient’s life. So, the purpose of this study is to investigate the effects of Deuterium Depleted Water (DDW) and M. longifolia essential oils (E.Os) on septic rats induced by CLP (Cecal Ligation and Puncture). Therefore, rats were divided into 7 groups: negative control (Laparotomy), CLP, treatment groups with DDW (15and 30 ppm), adjuvant with M. longifolia E.O (100 mg/kg b.w) and positive control group (indomethacin). Then, 24h after CLP induction, oxidative injury parameters and the expression of COX-2 gene in lung tissue were measured. The data indicated that sepsis induction reduced GSH, FRAP and increased LP, MPO, PGE2 and COX-2 gene but didn`t affected GST. Treatments of rats with DDW and E.Os alone and together as well as indomethacin have been effective in increasing the GSH, FRAP and decreasing the LP, MPO, PGE2 and COX-2. Histopathological examinations indicated that sepsis caused lung tissue damage and this damage decreased by DDW and E.O treatment. So sepsis causes oxidative lung tissue damage and the using of deuterium depleted water and Mentha longifolia can prevent injuries through modulation the oxidative stress/antioxidant parameters.

Aim and Recent studies show that the depletion of naturally occurring deuterium can result in tumor regression in both in vitro and in vivo models. The purpose of this study was to investigate the effect of deuterium depleted water (DDW) discretely and in combination with 5-FU on cell growth and anti-oxidant system of breast cancer cells.
Mateial and The cellular cytotoxicity test was performed using MTT assay. The MCF-7 cells were treated with decreasing deuterium concentrations of DDW alone, 5-FU alone and both. The malondialdehyde (MDA) level and the catalase (CAT) and superoxide dismutase (SOD) enzyme activities were identified spectrophometrically. One way analysis of variance (ANOVA) and t- test were used for statistical analysis. P ≤ 0.05 was considered significant. Treatment the cells with different concentrations of DDW alone especially in concentrations of 100 and 125ppm imposed growth inhibitory effect on MCF-7 cells. Also, 5-FU alone significantly decreased the survival fractions of MCF-7 cells and DDW in combination with 5-FU augmented 5-FU inhibitory effects on the cells. Compared to the control group (150 ppm), it was observed that in the cells treated with Lower concentrations of DDW, the activities of catalase and superoxide dismutase enzymes increased, but the level of malonyldialdehyde decreased. Deuterium depleted water can be considered as an adjuvant in anticancer drugs.

Sepsis is the most common reason of mortality among patients who are in the intensive care unit. Regarding to the side effects of the anti-inflammatory drug consumption, the replace of natural products are suggested in sepsis treatment. the effects of the combination of the deuterium depleted water (DDW) and Rosa (R.) damascena Mill. on the stress oxidative parameters and the gene expression of cyclooxygenase-2 (COX-2) in the lung and plasma tissues were investigated. 50 Rats were randomly divided into 5 groups: negative control (LAP), control group (CLP), two treatment groups with the combination of DDW and R. damascena Mill. essential oil (DDW15+EO and DDW30+EO) and positive control group with indomethacin (IND). Then, the levels of oxidative stress parameters and the expression of COX-2 were estimated in plasma and lung tissue. The sepsis resulted in the decrease of ferric reducing antioxidant power (FRAP) and glutathione (GSH) levels along with the increase of lipid peroxidation (LP) and COX-2 levels. However, the rats treated with the combination of deuterium depleted water and R. damascena Mill. essential oils as same as indomethacin were influenced on the regulation of those parameters through the evaluation of FRAP and GSH levels and the reduction of the LP level and COX-2 gene expression. The pathological studies confirmed the biochemical consequences as well. The results indicated that the oxidative damages were caused by sepsis, but the administration of the natural products such as deuterium depleted water and R. damascena Mill. essential oils could improve the injures due to the effectiveness of oxidative stress and antioxidants parameters.

This study was carried out to investigate the hepatoprotective effect of deuterium depleted water with Satureja rechingeri essential oil on liver damage. For this purpose, the adult male rats were divided into 16 groups. The negative control group used tap water in 14 days following DMSO i.p injection at day 15th. The treatment group with acetaminophen received tap water in 14 days following 500mg/kg b.w. i.p injection of acetaminophen dissolved in 300ml DMSO at day 15th. The treatment groups receiving deuterium depleted water (30ppm and 60 ppm) plus i.p injection of Satureja rechingeri essential oil following 500 mg/kg b.w. acetaminophen injection at day 15th.Then, at 4,8,16 and 24 hours after acetaminophen injection, the blood was taken from hurt puncture and the liver tissues were removed. Then, the biochemical marker levels such as AST, ALT, ALP and bilirubin were measured in plasma. The glutathione s-transferase enzyme activity and protein level, cytochrome P450 protein level and glutathione level were also estimated in liver homogenate. Findings indicated no significant changes in the level of serum parameters such as ALT, ALP and bilirubin in groups. While injecting acetaminophen decreased the levels of GST and GSH and increased significantly the level of CYP450 and AST. Treatment with deuterium depleted water and Satureja rechingeri essential oils are effective in moderating the levels of these parameters, leaded to returning of these parameters to normal values. Finally, the treatment of rats with high dose of acetaminophen caused liver oxidative damage and using of deuterium depleted water and Satureja rechingeri essential oil can be effective in preventing and improving these damages.