Search results for "Nix"
showing 9 items of 79 documents
Alterations of DNA-dependent DNA polymerase activities in the immature quail oviduct in response to estrogen stimulation.
1975
Administration of diethylstilbestrol, an estrogen analogue, to immature female quails causes an increase of extractable DNA-dependent DNA polymerase activities from the oviduct. At least two forms of polymerases have been determined, a high molecular weight polymerase (210,000 daltons) and a low molecular weight polymerase (34,000 daltons) calculated from column chromatography Sephadex G-200. During the primary hormone stimulation the amount of extractable enzyme reaches a maximum on the fifth day after daily injections of the hormone. In the period of withdrawal the activities decrease and reach values similar to those determined in the unstimulated oviducts. During secondary stimulation t…
Retinoid receptors and vitamin A deficiency: differential patterns of transcription during early avian development and the rapid induction of RARs by…
2003
The functional links of specific retinoid receptors to early developmental events in the avian embryo are not known. Before such studies are undertaken, knowledge is required of the spatiotemporal expression patterns of the receptor genes and their regulation by endogenous retinoic acid levels during the early stages of development. Here, we report the expression patterns of mRNAs for RARalpha, RARalpha2, RARbeta2, RARgamma, RARgamma2, RXRalpha, and RARgamma from neurulation to HH10 in the normal and vitamin A-deficient (VAD) quail embryo. The transcripts for all retinoid receptors are detectable at HH5, except for RXRgamma, which is detected at the beginning of HH6. At the 4/5 somite stage…
Serotonergic modulation of hippocampal acetylcholine release after long-term neuronal grafting
2000
Adult female rats sustained aspirative fimbria-fornix lesions and, 2 weeks later, received intrahippocampal grafts of fetal septal or mixed septal-raphe cell suspensions. Twenty-four months later, the extracellular concentration of hippocampal acetylcholine (ACh) was determined by microdialysis. Basal ACh levels (5-65 fmol/5 microl sham-operated rats) were strongly reduced after lesioning (3-7 fmol/5 microl). In septally transplanted and septal-raphe co-transplanted rats, hippocampal ACh concentrations were restored to near-normal levels (15-25 fmol/5 microl), indicating long-term functional survival of hippocampal transplants. After administration of citalopram (100 microM by infusion) and…
Modulation of hippocampal acetylcholine release after fimbria-fornix lesions and septal transplantation in rats
1997
Abstract Female Long–Evans rats sustained electrolytic lesions of the fimbria and the dorsal fornix causing a partial lesion of the septohippocampal pathway. Two weeks later, the rats received intra-hippocampal grafts of fetal septal cell suspensions. Nine to twelve months later, the release of acetylcholine (ACh) in the hippocampus of sham-operated, lesion-only and grafted rats was measured by microdialysis. The extent of cholinergic (re)innervation was determined by acetylcholinesterase (AChE) staining and densitometry. In both lesion-only and grafted rats, the ratio of ACh release to AChE staining intensity was increased as compared to sham-operated rats, indicating a loss of endogenous …
Poly(adenosine diphosphate-ribose) polymerase in quail oviduct. Changes during estrogen and progesterone induction
1974
Abstract The activities of the following enzymes have been determined in nuclei of quail oviducts in response to exogenous stimulation of the birds with diethylstilbestrol, used as an estrogen analogue and progesterone: DNA dependent DNA polymerase, DNA dependent RNA polymerase I and II and poly(adenosine diphosphate-ribose) [=poly(ADP-Rib)] polymerase. During primary stimulation with the estrogen analogue the activities of the four DNA dependent polymerases increase to about the same degree. Upon withdrawal of the hormones the levels of the enzymes drop to values known from nuclei from unstimulated quail oviducts. The secondary stimulation with the estrogen analogue causes a significant in…
Saint Agnes of Rome, the Pope and the “Purpuresque Pavo”: Memory Issues of the Apse Mosaic of Santa Agnese fuori le mura (625-638)
2018
The theme of memory is at the heart of apse mosaic of Santa Agnese fuori le mura. It’s a visual discourse about a roman martyr linked to the founder of new basilica and the “purpuresque pavo”. With the offering of this mosaics, the pope Honorius honours Saint Agnes’s memory. Honorius reaches to blend in a complex system of commemoration. Some close links are forged between the pope and the roman martyr. A true locus memoriae was established on the Via Nomentana since the middle of the IVth century. In the dedicatory inscription, the “purpuresque pavo” reminds the sacrifice of Christ, the martyrdom of Saint Agnes and the resurrection of the Elect. Thus, Honorius left an indelible mark in Rom…
Looking at social motivation to assess meat producing poultry adaptation to rearing conditions
2013
International audience
"All Tito wants is a little bit of unity" : kuva Titon Jugoslaviasta The New York Timesissa vuosina 1969- 1971
2012
Irtauduttuaan Neuvostoliiton johtamasta Itä-Euroopan kommunistimaiden liittoumasta 1940- luvun lopulla Titon johtama Jugoslavia kehittyi kylmän sodan aikana omaa tietään kulkevaksi sosialistiseksi valtioksi, joka oli ulkopolitiikassaan sitoutumaton etsien samalla paikkaansa idän ja lännen välissä, jonka talousjärjestelmä perustui ns. työläisten itsehallintojärjestelmään ja jonka sisäpoliittista kehitystä sävyttivät toisaalta erilaiset pyrkimykset reformeihin sekä toisaalta kysymykset siitä, miten Jugoslavian eri osatasavaltojen keskinäinen suhde kehittyisi ja vaikuttaisi näin koko maan tulevaisuuteen. 1960–1970-lukujen vaihteessa maassa elettiin sisäpoliittisesti epävakaata kautta, johon li…
Effect of NaOH Treatment on Properties of Phoenix Sp. Fiber
2016
The aim of this paper is to investigate the effect of an alkali treatment on physical, chemical, mechanical, and morphological properties of Phoenix Sp. fibers. The use of natural fibers as reinforcement in polymer composites requires a deep investigation to understand their behavior and which treatment is more appropriate to improve the quality of the untreated material. For this reason, fibers were extracted from the petioles of the Phoenix Sp. plant and they were treated with NaOH solution in different weight concentrations (5%, 10%, and 15%). The mechanical behavior was investigated through tensile test on single fiber at different gauge length (20 mm, 30 mm, 40 mm, 50 mm, and 60 mm). C…