Accumulation and Embryotoxicity of Polystyrene Nanoparticles at Early Stage of Development of Sea Urchin Embryos Paracentrotus lividus

2014 ◽  
Vol 48 (20) ◽  
pp. 12302-12311 ◽  
Author(s):  
C. Della Torre ◽  
E. Bergami ◽  
A. Salvati ◽  
C. Faleri ◽  
P. Cirino ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Early Stage ◽  
Paracentrotus Lividus ◽  
Polystyrene Nanoparticles ◽  
Sea Urchin Embryos ◽  
Stage Of Development

scholarly journals Amino Acid Composition of Collagen Extracted from the Spicules of Sea-Urchin Embryos (Paracentrotus Lividus)

1975 ◽  
Vol 42 (2-3) ◽  
pp. 201-204 ◽  
Author(s):  
Ida Pucci-Minafra ◽  
Salvatore Minafra ◽  
Fabrizio Gianguzza ◽  
Caterina Casano
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Sea Urchin ◽  
Paracentrotus Lividus ◽  
Sea Urchin Embryos

scholarly journals Effect of non-histone chromosomal proteins on transcription in vitro in sea-urchin

1978 ◽  
Vol 174 (1) ◽  
pp. 95-102 ◽  
Author(s):  
E Di Mauro ◽  
F Pedone ◽  
M Pomponi
Keyword(s):  
Sea Urchin ◽  
Rna Synthesis ◽  
Paracentrotus Lividus ◽  
Chromosomal Proteins ◽  
Stage Of Development ◽  
Transcription Process ◽  
Initiation Step ◽  
Transcription In Vitro ◽  
Transcription 3

Non-histone chromosomal proteins prepared from chromosomal material of the sea-urchin Paracentrotus lividus affect RNA synthesis in vitro. 1. The extent of transcription can be radically changed from inhibition to stimulation, depending on the DNA/non-histone chromosomal proteins ratio. 2. A correlation exists between stage of development and influence on transcription. 3. Non-histone chromosomal proteins exert their action by intervening directly on some initiation step of RNA synthesis, as shown by the numbers of initiation events that take place in their presence or absence. 4. Stimulatory activity is observed only in restrictive conditions of ionic strength and temperature. These observations are in agreement with models that predict for non-histone chromosomal proteins a regulatory role on the transcription process exerted through a modulation of promoter availability.

Proteomic profile of the hard corona of charged polystyrene nanoparticles exposed to sea urchin Paracentrotus lividus coelomic fluid highlights potential drivers of toxicity

2019 ◽  
Vol 6 (10) ◽  
pp. 2937-2947 ◽  
Author(s):  
Giacomo Grassi ◽  
Claudia Landi ◽  
Camilla Della Torre ◽  
Elisa Bergami ◽  
Luca Bini ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Paracentrotus Lividus ◽  
Cell Interactions ◽  
Coelomic Fluid ◽  
Proteomic Profile ◽  
Polystyrene Nanoparticles ◽  
Oppositely Charged

The biological identity of oppositely charged polystyrene nanoparticles entails the potential for cell interactions and toxicity.

Free choline in sea urchin embryos (Paracentrotus lividus)

1977 ◽  
Vol 33 (1) ◽  
pp. 38-39
Author(s):  
N. Wolfson ◽  
M. Acara ◽  
B. Rennick
Keyword(s):  
Sea Urchin ◽  
Paracentrotus Lividus ◽  
Sea Urchin Embryos ◽  
Free Choline

Characterization of an Alpha Type Carbonic Anhydrase from Paracentrotus lividus Sea Urchin Embryos

2016 ◽  
Vol 18 (3) ◽  
pp. 384-395 ◽  
Author(s):  
Konstantinos Karakostis ◽  
Caterina Costa ◽  
Francesca Zito ◽  
Franz Brümmer ◽  
Valeria Matranga
Keyword(s):  
Carbonic Anhydrase ◽  
Sea Urchin ◽  
Paracentrotus Lividus ◽  
Sea Urchin Embryos ◽  
Alpha Type

scholarly journals SELECTIVE INHIBITION OF GENETIC TRANSCRIPTION IN SEA URCHIN EMBRYOS

1972 ◽  
Vol 55 (1) ◽  
pp. 74-81 ◽  
Author(s):  
Brian L. Kotzin ◽  
Robert F. Baker
Keyword(s):  
Dna Replication ◽  
Experimental Evidence ◽  
Sea Urchin ◽  
Sequence Homology ◽  
Nuclear Dna ◽  
Size Range ◽  
Selective Inhibition ◽  
Gastrula Stage ◽  
Sea Urchin Embryos ◽  
Stage Of Development

Experimental evidence suggests that exposure of sea urchin gastrulae to 5-bromodeoxyuridine (BUdR), an analog of thymidine, causes a reduction in the rate of synthesis of some RNA species usually transcribed at this stage of development. In pulse-chase experiments, 3H (in gastrula stage 8–15S nuclear DNA labeled with BUdR-3H) could not be chased, with unlabeled BUdR, into 20–60S size-range DNA; in similar experiments in which gastrulae were pulsed with thymidine-3H and then chased with unlabeled thymidine, 3H in 8–15S nuclear DNA could be extensively chased into 20–60S DNA. DNA-RNA hybridization assays indicate that gastrula stage nuclear DNA in the range of 20–60S has greater sequence homology for gastrula stage RNA-3H than does nuclear DNA of similar size-range taken from gastrulae exposed to BUdR for 1 hr. An explanation is offered for the effect of BUdR on transcription and DNA replication in sea urchin embryos.

Developmental changes in amounts of sulfhydryl-agent decolorant released by sea urchin embryos

1974 ◽  
Vol 52 (12) ◽  
pp. 1531-1534
Author(s):  
N. Wolfson
Keyword(s):  
Sea Urchin ◽  
Paracentrotus Lividus ◽  
Tris Buffer ◽  
Developmental Changes ◽  
Cell Stage ◽  
Nitrobenzoic Acid ◽  
Sea Urchin Embryos ◽  
Saline Medium

Live embryos of the sea urchin, Paracentrotus lividus, release materials which decolor the yellow ion formed by the reagent DTNB (5,5′-dithiobis(2-nitrobenzoic acid)) in amounts titratable with dithiothreitol, and this decolorant activity increased to about the 32-cell stage, declining gradually thereafter. The embryos release decolorants into a saline medium only if it contains Tris buffer and little or no calcium and is adjusted to a pH below 8.

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