A hydroponic experiment was conducted to investigate bioaccumulation and photosynthetic activity response to Cd in sweet sorghum seedlings. The seedlings were treated with 0, 50, and 100 μM Cd for 15 d. Our results showed that morphological characteristics of sweet sorghum were significantly affected by Cd treatments. The Cd concentrations in roots and shoots increased with increasing Cd concentrations in the nutrition solution; higher Cd accumulation was observed in the roots. Meanwhile, the photosynthetic activity decreased significantly and a shape of chlorophyll (Chl) a fluorescence transient in leaves was altered by Cd treatments. The Chl contents in the leaves decreased significantly, which was demonstrated by a change of spectral reflectance. Our data indicated that the higher Cd concentration reduced Chl contents and inhibited electron transport in the leaves, leading to the decrease of photosynthetic activity., Z. C. Xue, J. H. Li, D. S. Li, S. Z. Li, C. D. Jiang, L. A. Liu, S. Y. Wang, W. J. Kang., and Obsahuje bibliografii
From the bioarchaeological and morphofunctional point of view, a skeletal deformity is described from an individual buried in a settlement pit at an archaeological site Třebčín in Moravia dating from the period of the Great Moravian (AD 800-950). Macroscopic and radiological examinations are employed to diagnose pathological leasions on the skeleton of an adult female. Female was probably affected by a haematogenous form of acute osteomyelitis from early neonatal age., Anna Pankowská., and Obsahuje bibliografii
Unikátní vakcína pro léčbu infekčních onemocnění, historicky první zdokumentování vývoje zubu, které může pomoci v boji proti rakovině, revoluční objev organismu bez mitochondrií neboli „buněčných elektráren“ -i takové jsou aktuální výsledky vědeckých týmů z centra BIOCEV, které za účasti významných hostů zahájilo 16. června 2016 plný provoz., A unique vaccine to treat infectious diseases, tooth development documented the first time in history that might help fight cancer and the revolutionary discovery of an organism without mitochondria, referred to as “cell power plants”. These are some of the current results from the BIOCEV research teams. The centre’s full operation was officially launched on June 16, 2016 in the presence of Czech and foreign guests from different areas of science and politics. The Biotechnology and Biomedicine Centre of the Academy of Sciences and Charles University in Vestec (BIOCEV) was established with substantial financial aid from the European Union. By 2020, 400 researchers and 200 master’s degree as well as postgraduate students are expected to work there. As of today, 56 research groups under five synergic research programmes are focused on obtaining more detailed understanding of organisms at the molecular level. Their results are oriented towards applied research and the development of new medical procedures to combat severe health problems., Isd., and Autor je podepsaný šifrou Isd.
Representatives of the Academy of Science of Czech Republic and Charles University have subscribed to the Founding Contract of the Biotechnological and Biomedical Center (BIOCEV) that will be situated in the vicinity of Vestec. and Luděk Svoboda.
ECM is composed of different collagenous and non-collagenous proteins. Collagen nanofibers play a dominant role in maintaining the biological and structural integrity of various tissues and organs, including bone, skin, tendon, blood vessels, and cartilage. Artificial collagen nanofibers are increasingly significant in numerous tissue engineering applications and seem to be ideal scaffolds for cell growth and proliferation. The modern tissue engineering task is to develop three-dimensional scaffolds of appropriate biological and biomechanical properties, at the same time mimicking the natural extracellular matrix and promoting tissue regeneration. Furthermore, it should be biodegradable, bioresorbable and non-inflammatory, should provide sufficient nutrient supply and have appropriate viscoelasticity and strength. Attributed to collagen features mentioned above, collagen fibers represent an obvious appropriate material for tissue engineering scaffolds. The aim of this minireview is, besides encapsulation of the basic biochemical and biophysical properties of collagen, to summarize the most promising modern methods and technologies for production of collagen nanofibers and scaffolds for artificial tissue development., L. Koláčná, J. Bakešová, F. Varga, E. Košťáková, L. Plánka, A. Nečas, D. Lukáš, E. Amler, V. Pelouch., and Obsahuje bibliografii
In five genotypes of cowpea (Vigna unguiculata), the influence of salicylic acid (SA) on photosynthetic activity and biochemical constituents including peroxidase activity at the genotypic level was determined. After SA treatment the total free sugar content increased in IFC 8401 and IGFRI 450 genotypes, whereas the content of total leaf soluble proteins decreased significantly in IFC 902. The high chlorophyll (Chl) (a + b) content in IFC 902 showed a good correlation with the net photosynthetic rate (PN), as in this genotype a significant increase in PN was found after the SA treatment. and Amaresh Chandra,, R. K. Bhatt.