Magnetic Fe3 O4 @graphene oxide improves the therapeutic effects of embryonic stem cells on acute liver damage.

OBJECTIVE: Acute liver failure is usually associated with inflammation and oxidation of hepatocytes and has high mortality and resource costs. Mesenchymal stem cell (MSCs) has occasionally been reported to have no beneficial effect due to poor transplantation and the survival of implanted cells. Recent studies showed that embryonic stem cell (ESC)-derived MSCs are an alternative for regenerative medicine. On the other hand, graphene-based nanostructures have proven useful in biomedicine. In this study, we investigated whether magnetic graphene oxide (MGO) improved the effects of ESC-MSC conditioned medium (CM) on protecting hepatocytes and stimulating the regeneration of damaged liver cells. MATERIALS AND METHODS: To provide a rat model of acute liver failure, male rats were injected intraperitoneally with carbon tetrachloride (CCl4 ). The rats were randomly divided into six groups, namely control, sham, CCl4 , ESC-MSC-CM, MGO and ESC-MSC-CM + MGO. In the experimental groups, the rats received, depending on the group, 2 ml/kg body weight CCl4 and either ESC-MSC-CM with 5 × 106 MSCs or 300 µg/kg body weight MGO or both. Symptoms of acute liver failure appeared 4 days after the injection. All groups were compared and analysed both histologically and biochemically 4 days after the injection. Finally, the results of ESC-MSC-CM and MSC-CM were compared. RESULTS: The results indicated that the use of MGO enhanced the effect of ESC-MSC-CM on reducing necrosis, inflammation, aspartate transaminase, alanine aminotransferase and alkaline phosphatase in the CCl4 -induced liver failure of the rat model. Also, the expression of vascular endothelial growth factor and matrix metalloproteinase-9 (MMP-9) was significantly upregulated after treatment with MGO. Also, the results showed that the ESC-MSC-CM has more efficient effective compared to MSC-CM. CONCLUSION: Magnetic graphene oxide improved the hepatoprotective effects of ESC-MSC-CM on acute liver damage, probably by suppressing necrosis, apoptosis and inflammation of hepatocytes.

Comparison common equations for LDL-C calculation with direct assay and developing a novel formula in Iranian children and adolescents: the CASPIAN V study.

BACKGROUND: Hypercholesterolemia is a common dyslipidemia that leads to atherosclerosis. It is proved that early stages of atherosclerosis begins in early stages of life. In several studies, widespread prevalence of dyslipidemia in children is reported. So, assessment of lipid profile in children and adolescence is necessary for early diagnosis of dyslipidemia. Laboratory methods for measuring LDL are not available and economical. So, in some laboratories Friedwald method is used to determine LDL level. But, the preciseness of this method is not acceptable. Further, the preciseness of this method was not assayed in children and adolescence. So, it seems that assaying the preciseness of different methods is necessary. METHODS: The methodology of this work is on the basis of findings of the Caspian V study. This study was conducted in 30 provinces of Iran during 2015. The population of this work was rural and urban students aged 7-18 years old. The level of total cholesterol (TC), HDL, LDL, and TG were measured using laboratory methods. The average and variances values were determined for each group of data using SPSS. Further, LDL values were calculated with a new formula introduced in this work. A comparison was made between the new formula and the other methods. RESULTS: In the present study, we found that compare to four common formulas, Friedwald was the best equation to estimate LDL-C concentrations in Iranian children and adolescents and the new formula was the next accurate equation. The strongest correlation between Friedwald and the new equation was found for those with 15-18 years old. CONCLUSION: Considering the cut-off points of TG (100 mg/dL), we observed the strongest correlation between Friedwald equation and direct assay and the weakest one was for Ahmadi formula in subjects with either greater or lower TG concentrations. Furthermore, we found that Anandraja equation had the most sensitivity (89.5%), while the most specificity was dedicated to the new formula (98.9%).

Comparative Efficacy of Zolpidem and Nigella Sativa in Treatment of Sleep Disorder and Vasomotor Symptoms in Menopausal Women of Women's General Hospital.

Objective: To evaluate the efficacy of Zolpidem and Nigella sativa compared to placebo in treatment of sleep disturbance in healthy postmenopausal women. Menopause is a period that diagnosed after 12 months of amenorrhea and is characterized by a group of symptoms that include irregular menses; vasomotor and urogenital symptoms. The effects of non-hormonal therapies are being widely researched on menopause symptoms. There has been no study to compare Zolpidem and Nigella sativa versus placebo. Materials and methods: In this double-blind, placebo controlled trial, we compared the effect of Zolpidem with Nigella sativa and placebo in reducing sleep quality in 60 menopausal women. The prior and the later results were compared. We divided the patients into three groups after history taking and physical examination and filling the Pittsburgh questionnaire. Each group received their medication as the following order: Group A: Zolpidem, Group B: Nigella sativa, Group C: placebo. The first group received Zolpidem with the dose of 5 mg for 8 weeks. The second group received Nigella sativa with the dose of 600 mg for 8 weeks. The third group received placebo for 8 weeks. After two months, the Pittsburg questionnaire was filled again. Results: In the nigella sativa group, we had not significant improvement in sleep quality (p =0.07), hot flashes (p =0.15), palpitation (p =0.56) and night sweets (p =0.08). In zolpidem group, we have seen lack of improvement of hot flashes (p =0.73), and palpitation (p =0.36), which are nonsignificant statistically according to p values, but in zolpidem group, we had significant improvement in sleep quality (p =0.01), and night sweats (p =0.049). Conclusion: It seems that zolpidem has some effect on improving the quality of sleep in postmenopausal women. zolpidem also is good for night sweats. Nigella sativa was not effective in vasomotor symptoms and sleep quality.

Heterotopic Pancreas as a Leading Point of Intussusception: A Case Report.

Heterotopic pancreas (HP) is generally asymptomatic and found incidentally. It can act very rarely as a leading point for intussusception. Thus, it should be considered as a differential diagnosis of the mass lesions leading to the intestinal intussusception. Herein, we report an unusual case of HP as a cause of ileocolic intussusception.