Brain energy rescue:an emerging therapeutic concept for neurodegenerative disorders of ageing

The brain requires a continuous supply of energy in the form of ATP, most of which is produced from glucose by oxidative phosphorylation in mitochondria, complemented by aerobic glycolysis in the cytoplasm. When glucose levels are limited, ketone bodies generated in the liver and lactate derived from exercising skeletal muscle can also become important energy substrates for the brain. In neurodegenerative disorders of ageing, brain glucose metabolism deteriorates in a progressive, region-specific and disease-specific manner — a problem that is best characterized in Alzheimer disease, where it begins presymptomatically. This Review discusses the status and prospects of therapeutic strategies for countering neurodegenerative disorders of ageing by improving, preserving or rescuing brain energetics. The approaches described include restoring oxidative phosphorylation and glycolysis, increasing insulin sensitivity, correcting mitochondrial dysfunction, ketone-based interventions, acting via hormones that modulate cerebral energetics, RNA therapeutics and complementary multimodal lifestyle changes

Development and Optimization of Self-emulsifying Drug Delivery Systems (SEDDS) for Enhanced Dissolution and Permeability of Rosuvastatin

11th International Symposium on Pharmaceutical Sciences (ISOPS) -- JUN 09-12, 2015 -- Ankara Univ, Fac Pharm, Ankara, TURKEYWOS: 000384799700008PubMed ID: 27230902Rosuvastatin calcium is commonly used statin for treatment of dyslipidemia. It has low bioavailability. The aim of this study was to develop new rosuvastatin calcium self-emulsifying drug delivery systems (SEDDS) as an alternative formulation and to evaluate the permeability of rosuvastatin calcium SEDDS by using Caco-2 cells. Rosuvastatin calcium SEDDSs were developed by using pseudo ternary phase diagram and characterized by using heating cooling cycle, robustness to dilution, stability and in vitro drug release and permeability. The permeability studies of rosuvastatin calcium SEDDS (P-app (A -> B) for F1-RS = 1.492x10(-5)+/- 0.413x10(-5) and Papp (A. B) for F2-RS= 1.254x10(-5)+/- 0.19x10(-5)) across Caco-2 cells showed that permeability value from apical to basolateral was higher than permeability value of commercial formulation (Papp (A -> B) = 7.13x10(-5)+/- 0.668x10(-5)). In conclusion, SEDDS as a drug carrier may be used as an effective and alternative hyperlipidemia therapy for oral delivery of rosuvastatin calcium

Changes in the lipid levels during the mobilization processes

41st Annual Meeting of the European-Society-for-Blood-and-Marrow-Transplantation -- MAR 22-25, 2015 -- Istanbul, TURKEYWOS: 000351632903119European Soc Blood & Marrow Transplanta

Plasma Levels of Antioxidant Vitamins in Patients with Acromegaly: A Case-Control Study

OBJECTIVE: The aim of this study was to compare antioxidant vitamin C and vitamin E levels in the non-acromegaly control group and in patients with acromegaly with and without remission. MATERIAL AND METHODS: In this study, 100 cases, acromegaly patients of 57% (n=57, 29F, 28M, mean ages of 49.5±12.1) and control subjects of 43% (n=43, 29F, 14M, mean ages of 49.6±9.2). Acromegaly patients were classified into two groups; active acromegaly (AA; n=33) and controlled acromegaly (CA; n=24). RESULTS: Vitamin C levels were significantly lower in the acromegaly group [7.6 (4.7) mg/L, as median (IQR)] when compared to the control group [12.2 (5.5) mg/L, as median (IQR)] (p <0.001). Vitamin E levels didn't show a significant difference between the acromegaly and the control groups (14.2±3.6 vs. 14.8±3.7, as mean±SD, respectively, p = 0.439). Correlation analysis showed that vitamin C levels were not significantly associated with clinical, anthropometric and laboratory parameters in the acromegaly group. Vitamin E levels were significantly associated with the total cholesterol, triglyceride, LDL-C, HDL-C, APO A1, APO B both in the acromegaly and the control groups. CONCLUSION: This study is the first one to investigate the relationship between the levels of vitamin C & E and anthropometric & metabolic parameters in acromegaly patients and control group. In our study, vitamin C level was significantly lower in the acromegaly group compared to the level in the control group. There was no significant difference in vitamin E levels between the acromegaly and control group