Search results for " Regulator"
showing 8 items of 728 documents
cis-Regulation and chromatin dynamics of the hbox12 gene during the embryogenesis of Paracentrotus lividus.
2014
The GRN specifying the dorsal-ventral (D-V) axis of the sea urchin embryo is currently under investigation. An early input for D-V polarity is given by a redox gradient probably generated by an asymmetrical distribution of maternal mitochondria (1). Only on the future ventral side, the oxidizing environment induces the expression of the nodal gene, an essential regulator of D-V polarization (2). By contrast, on the future dorsal side, a reducing environment activates the hypoxia inducible factor (HIF-1α) (3). The hbox12 transcription repressor is an early marker of the dorsal side of the embryo, in which it negatively regulates the expression of nodal (4, 5). Interestingly, by in silico ana…
Zakorzenienie gospodarstw rolnych w lokalnych (regionalnych) systemach biobiznesu – uwarunkowania instytucjonalne w województwie opolskim
2016
Celem opracowania jest wskazanie na rolę instytucji w kreowaniu lokalnych (regionalnych) biobiznesów. Lokalne biobiznesy opierają się na unikatowym wykorzystaniu zarówno standardowych, jak i specyficznych zasobów terytoriów, w których są zakładane. Analizę przeprowadzono z wykorzystaniem trzech wymiarów transformacji europejskiego modelu rolnictwa: regulacji środowiskowych, dyfuzji wiedzy i informacji oraz powiązań międzyorganizacyjnych i społecznych. Na podstawie przeprowadzonych badań ankietowych zidentyfikowano stopień zakorzenienia instytucji zarządzających powstaniem biogospodarki w sieciach społecznych użytkowników towarowych gospodarstw rolnych w województwie opolskim. Praca ma chara…
Maturation of Epidermal Langerhans Cells In Vitro Is Accompanied by Downregulation of 4F2 (CD98) as Determined by Differential Display
1998
Following short-term culture, Langerhans cells mature morphologically and functionally into potent immunostimulatory cells. As regulation of gene expression accompanies this maturation process, it is likely that differentially expressed genes are involved in the maturation events. Using the recently described method of differential display, we generated cDNA expression patterns starting with mRNA of murine epidermal Langerhans cells isolated either directly (fLC) or following 3 d cultivation (cLC). Five hundred putative differentially expressed cDNA fragments were recovered from the gel. For a part of the fragments differential expression was confirmed by dot blot and Southern hybridization…
Vienas rokas intermitētas išēmijas ietekme uz sirds ritma variabilitāti un mikrocirkulāciju otras rokas ādā
2015
Išēmiska prekondicionēšana (IPC) ir terapeitiska stratēģija, lai samazinātu išēmijas radītus bojājumus. Išēmiskie bojājumi ir šūnu bojājumi, ko izraisa nepietiekama skābekļa piegāde. Pētījuma mērķis bija noskaidrot vienas rokas intermitētas išēmijas ietekmi uz sirds ritma variabilitāti un otras rokas mikrocirkulāciju ādā. Tika izvirzīta hipotēze, ka vienas rokas intermitēta išēmija izraisa otras rokas ādas mikrocirkulācijas lokālo regulatoro mehānismu aktivitātes izmaiņas. Lai sasniegtu mērķi, 10 personām tika veikts vienas rokas intermitētas išēmijas tests. Testa laikā tika veikts ādas asins plūsmas pretējā rokā pieraksts un sirdsdarbības ciklu (RR intervālu) reģistrācija Pirms un pēc test…
El impacto del cambio climático en la movilidad humana : las migraciones climáticas en el contexto internacional y europeo
2021
For decades, the migration phenomenon has been one of the thorniest regulatory issues in the European Union (EU) policy. In addition, today, the fight against climate change in all regions of the world makes the situation worse for the new ?climate refugees? or ?environmental displaced people?, whose legal status is not yet covered by the ancient 1951 Refugee Convention.
Regulation of type 1 fimbriae synthesis and biofilm formation by the transcriptional regulator LrhA of Escherichia coli
2005
Type 1 fimbriae ofEscherichia colifacilitate attachment to the host mucosa and promote biofilm formation on abiotic surfaces. The transcriptional regulator LrhA, which is known as a repressor of flagellar, motility and chemotaxis genes, regulates biofilm formation and expression of type 1 fimbriae. Whole-genome expression profiling revealed that inactivation oflrhAresults in an increased expression of structural components of type 1 fimbriae.In vitro, LrhA bound to the promoter regions of the twofimrecombinases (FimB and FimE) that catalyse the inversion of thefimApromoter, and to the invertible element itself. TranslationallacZfusions with these genes and quantification offimEtranscript le…
The Developmental Transcriptome for Lytechinus variegatus Exhibits Temporally Punctuated Gene Expression Changes
2019
AbstractEmbryonic development is arguably the most complex process an organism undergoes during its lifetime, and understanding this complexity is best approached with a systems-level perspective. The sea urchin has become a highly valuable model organism for understanding developmental specification, morphogenesis, and evolution. As a non-chordate deuterostome, the sea urchin occupies an important evolutionary niche between protostomes and vertebrates.Lytechinus variegatus(Lv) is an Atlantic species that has been well studied, and which has provided important insights into signal transduction, patterning, and morphogenetic changes during embryonic and larval development. The Pacific specie…