Tradice každoročního setkávání držitelů Nobelovy ceny s mladými vědci a studenty z celého světa pokračovala letos 58. ročníkem, kdy setkání v oboru fyziky proběhlo v Lindau na břehu Bodamského jezera ve dnech 28. června až 4. července 2008. and Zpracovala Andrea Cejnarová.
The Be star 59 Cyg was directly confirmed to be an evolved Be binary with a sdO companion (Be + sdO) by a weak HeII 4686 absorption. Orbital elements and stellar masses were determined. The orbital period was found to be 28.192 ± 0.004 d with a slightly eccentric orbit of e = 0.11 ± 0.005. The mass of the secondary is located in the range between 1.56 and 2.3 M Ø. Thus, 59 Cyg most likely resembles the well known Be + sdO binary φ Per in an earlier stage. Characteristic features for Be binaries with sdO or white dwarf companions were identified. They can be used for an easier identification of further evolved Be binaries or candidate systems.
In the rat model, 6-hydroxydopamine (6-OHDA) known as a selective catecholaminergic neurotoxin used chiefly in modeling Parkinson's disease (PD). Continuous aerobic exercise and curcumin supplementations could play a vital role in neuroprotection. This study aimed to explore the neuroprotective roles of regular aerobic exercise and curcumin during PD. For this, rats were treated as follows for 8 consecutive weeks (5 d in a week): For this, animals were orally treated with curcumin (50 ml/kg) alone or in combination with aerobic exercise. Compared with a control group, induction of PD by 6-OHDA increased the amount of α-synuclein protein and malondialdehyde levels and decreased the number of substantia nigra neurons, total antioxidant capacity, and glutathione peroxidase activity in brain tissue. All these changes were abolished by the administration of curcumin with aerobic exercise treatments. Activity behavioral tests also confirmed the above-mentioned results by increasing the rod test time and the number of rotations due to apomorphine injection. Histopathology assays mimic the antioxidant activity and behavioral observations. Combined curcumin with aerobic exercise treatments is potentially an effective strategy for modifying the dopaminergic neuron dysfunction in 6-OHDA-induced rats modeling PD via dual inhibiting oxidative stress indices and regulating behavioral tasks.