Eugen Ungureanu

Universitatea Alexandru Ioan Cuza | UAIC · Department of Biology

Low thermal microwave bioeffects are subject of multidisciplinary research with biomedical and environmental issues. In this study some of such effects, with focus enzyme activity changes in Phanerochaete chrysosporium fungus were assayed, with addressing to microwave exposure risks. Very low thermal microwaves (Specific Absorption Rate=2.32 W/kg)...

Experimental investigation focused on influence of different CoFeO4 nanoparticles concentrations on solubleprotein and electrophoretic pattern of Phanerochaete chrysosporium fungus. Number of electrophoretic fraction is higherin older mycelium P. chrysosporium 14-day-old compared to that 7-day-old. Moreover, there is an increase in stainingintensit...

Experimental investigation focused on electromagnetic pollution influence on fungi degrading wood is presented in this paper. 970 MHz low power microwaves were used to irradiate Phanerochaete chrysosporum cells combining two exposure times and two specific absorption rates – experimentally determined by the scattering parameter method. Total protei...

In our days we have a great number of cardiovascular diseases with atherosclerotic etiopathogeny.Thas why there is a important preocupation for identifying the atherogenic risk factors (lipid metabolism disorders). This study follows the effects of the ovarian hormones deficit in surgical menopause (experimental ovariectomy). The absence of the end...

Hereditary breast and ovarian cancers are mainly attributable to predisposition genes whose germinal mutations are responsible for the disease. The most common genes associated with breast/ovarian cancer are BRCA1 and BRCA2 but at least 20 other genes of medium of high penetrance have been associated with these types of cancer. Lifetime risk of bre...

BRCA1 and BRCA2 are tumour suppressor genes whose mutant phenotypes predispose to breast and ovarian cancer. Screening for mutations in these genes is now standard practice for hereditary breast and ovarian cancer (HBOC) cases in Europe, and permits medical follow-up and genetic counselling adapted to the needs of individuals in such families. Curr...

Fertilization is considered as one of the main sources of environmental pollution caused by agriculture. When high fertilizer rates are applied, nutrient losses take place which pollute agricultural ecosystems. Defense strategies were developed in order to minimize the environmental burden caused by agricultural pollution. One of these strategies i...

Tooth eruption is a physiological process in which the tooth migrates from the maxillary bone towards the oral cavity, at the end of which teeth find their place on the arch creating vicinity relations according to a genetic code characteristic to each individual. Dental eruption begins with the eruption of the first primary teeth around 6 months a...

The data accumulated by now shows that the topic of biological effects of electromagnetic radiation is far from being exhausted. Is undoubtedly that a non-ionizing radiation field maintained on a biological entity has some effects on it. To try shaping issues regarding this, this work aims to study the impact of radiation generated by an emission-r...

The extracts made with sodium/potassium phosphate buffer from the probes collected during germination of the seeds from Gleditsia triacanthos and Robinia pseudacacia was subjected to polyacrylamide gel electrophoresis under native conditions. Then the solution for specific coloring of the bands in which are found the izoenzymes of aspartate-aminotr...

There ORF's from the megaplasmid pAO1 (Arthrobacter nicotinovorans) were overexpressed in Escherichia coli on two different mediums using tac promoter in order to establish the best conditions for biomass and protein production. The auto-inducible medium proved to be more efficient than standard Lauria-Bertani medium, allowing the cultures to reach...

Now it is an accepted fact that plant growth-promoting rhizobacteria (PGPR) can increase the productivity of several crops. The main objective of the present study was to find if there are any differences in protein content in the seeds of soybean (Glycine max L. MERR.). Using spectrophotometric methods for analyzing the protein contents and ele...

The main objective of the experiment was to observe the variety and evolution of the proteins during germination of the seeds from the honeylocust (Gleditsia triacanthos). Using the technique of SDS-PAGE there were discovered a lot of protein fractions. The profile of these fractions varies from the wide distribution along the entire molecular m...

Les auteurs de cette étude présentent les résultats de leurs recherches sur l’influence du champ électromagnétique (uniforme et pulsatoire) sur l’activité de la catalase et de la peroxydase en cultures mixtes de Chaetomium globosum et Trichoderma viride, à 7 et 14 jours d’ensemencement. Il a été constaté que l’évolution de ces enzymes dépend du t...

The chlorophylls and the carotenes play the most important role among the photosynthetic pigments existing in the green plant. The chlorophyll and the carotene biosynthesis in the leaves of green plants vary depending on different endogenous and exogenous factors. The variation curves for the chlorophyll a, b and carotenes have a similar profile fo...

One of the most extensively studied positive effects of the rhizospheric microbiosis is plant growth stimulation by rhizobacteria. Our efforts were pointed out to the influence of some rhizobacterial strains on the content of starch in Zea mays L caryopses during in vitro germination. �. -amylase maximum activity was recorded for the test in the 12...

The main objective of the experiment was to observe the variety and evolution of the proteins during germination of the seeds from the black locust (Robinia pseudacacia L.). Using the technique of PAA-gel electrophoresis under denaturant conditions there was revealed a lot of fractions which, mainly, decrease form the start time (dry seeds) until t...