Publications

relationships between seasonal thermal variations and cell proliferation in heterothermic vertebrates, as revealed by pcna expression in the brain of adult rana bergeri (günther, 1986).	the cyclic variations of temperature with seasons, which are accompanied by variations in photoperiod, can activate proliferation in stem cells which survive in various organs and tissues of adult vertebrates, both poikilo- (aquatic and terrestrial) and homeothermic (male songbirds and mammals). in the brain of these organisms such stem cells are mainly placed in the ependymal and/or sub-ependymal layers. to assess the influence of environmental temperature on the proliferative activity of those ...	2012	22893999
interaction between autumnal temperature-photoperiod and experimentally induced transient cold shock influences proliferative activity in the brain of an adult terrestrial heterothermic vertebrate, rana bergeri (günther, 1986).	it has been shown previously that in adult rana esculenta, caught in nature, cold-shocked and brain-injured, encephalic cell proliferation is increased when capture and experiment occurred in spring and depressed when they occurred in autumn. upon exclusive thermal stress cell proliferation appeared weak in spring and intense in autumn. the present study has investigated cold-shocked, but otherwise uninjured rana bergeri to assess the impact of autumnal environment on encephalic cell proliferati ...	2015	27086419
interaction between spring temperature-photoperiod and experimentally induced transient cold shock influencing proliferative activity in the brain of an adult terrestrial heterothermic vertebrate, rana bergeri (günther, 1986).	the seasonal thermal cycle and correlated variations in photoperiod exert antithetical influences on the proliferation of the reserve brain stem cells, which are mostly ependymal and subependymal, of adult earth-dwelling heterothermic vertebrates upon deprivation of an encephalic area. also, an induced sudden, transient thermal stress preceding surgical cerebral maiming increases or depresses the proliferation of these stand-by cells, depending on the season. in particular, the concomitance of s ...	2015	27086439
short-term cadmium exposure induces stress responses in frog (pelophylax bergeri) skin organ culture.	there have been a few studies on the negative effects of pollutants on amphibian skin, the first structural barrier that interacts with the environment and its potential contaminants. in this study an ex vivo skin organ culture from the amphibian pelophylax bergeri was used to evaluate cell stress responses induced by short-term exposure to cadmium (cd), a toxic heavy metal known to be an environmental hazard to both humans and wildlife. histopathological studies were carried out on skin explant ...	2015	26277541
frog (pelophylax bergeri, günther 1986) endocrine disruption assessment: characterization and role of skin poly(adp-ribose) polymerases.	model of the our research was the adult male amphibian anura, pelophylax bergeri, poikilotherm species not considered threatened by the iucn, sampled in representative sites at different degree. in the first phase, a biochemical characterization of the adp-ribosylation on the skin of barcoded amphibian anura collected from matese lake (clean reference site in ce, italy) was carried out. two parp isoforms were evidence: the first of 66 kda is localized into nucleus and activated by dna damage; th ...	2017	29081042
electron spin resonance (esr) for the study of reactive oxygen species (ros) on the isolated frog skin (pelophylax bergeri): a non-invasive method for environmental monitoring.	reactive oxygen species (ros) in biological tissues of elected biosentinels represent an optimal biomarker for eco-monitoring of polluted areas. electron spin resonance (esr) is the most definitive method for detecting, quantifying and possibly identifying radicals in complex systems.	2018	29655038
small heat shock proteins in the amphibian pelophylax bergeri: cloning and characterization of hsp27 and hsp30 cdnas and their expression analysis in ex vivo skin exposed to abiotic stresses.	small heat shock proteins (shsp) are molecular chaperones that play an essential role in maintaining protein homeostasis and promoting cell survival. in this work, for the first time, multiple cdnas encoding for small hsp27 and hsp30, designed, respectively, as pbhsp27-(1-2) and pbhsp30-(1-5), were cloned and characterized in the amphibian pelophylax bergeri, which is a suitable model for studying biological responses to environmental perturbations. domain architecture analysis showed that pbhsp ...	2019	31146021
a reference dna barcode library for austrian amphibians and reptiles.	in the last few years, dna barcoding became an established method for species identification in biodiversity inventories and monitoring studies. such studies depend on the access to a comprehensive reference data base, covering all relevant taxa. here we present a comprehensive dna barcode inventory of all amphibian and reptile species native to austria, except for the putatively extinct vipera ursinii rakosiensis and lissotriton helveticus, which has been only recently reported for the very wes ...	2020	32163447