Results 51 to 60 of about 114,625,497 (147)

Polyhydroxynaphthoquinone Pigment From Vietnam Sea Urchins as a Potential Bioactive Ingredient in Cosmeceuticals

Natural Product Communications, 2020
In this study, valuable polyhydroxynaphthoquinone (PHNQ) pigments were recovered from sea urchin food waste and were investigated as a potential bioactive ingredient for cosmeceuticals.
Vo Mai Nhu Hieu, Tran Thi Thanh Van, Cao Thi Thuy Hang, Natalia P. Mischenko, Fedoreyev Sergey A., Hai Bang Truong   +5 more
doaj   +1 more source

The Immune Response of Acanthaster planci to Oxbile Injections and Antibiotic Treatment

Journal of Marine Sciences, Volume 2014, Issue 1, 2014., 2014
Bile salts have been recently identified as a rapid and effective method for killing A. planci. However the mechanistic basis of this new control method is poorly understood. This study explored the immune response(s) of A. planci and/or pathogenesis resulting from the injection of bile salts. To account for the possible role of pathogenesis in causing
Alexandra Grand, Morgan Pratchett, Jairo Rivera-Posada, Norman Ying Shiu Woo   +3 more
wiley   +1 more source

Expression of Pigment Cell‐Specific Genes in the Ontogenesis of the Sea Urchin Strongylocentrotus intermedius

Evidence-Based Complementary and Alternative Medicine, Volume 2011, Issue 1, 2011., 2011
One of the polyketide compounds, the naphthoquinone pigment echinochrome, is synthesized in sea urchin pigment cells. We analyzed polyketide synthase (pks) and sulfotransferase (sult) gene expression in embryos and larvae of the sea urchin Strongylocentrotus intermedius from various stages of development and in specific tissues of the adults.
Natalya V. Ageenko, Konstantin V. Kiselev, Nelly A. Odintsova   +2 more
wiley   +1 more source

Synthesis of Polyhydroxylated Aminonaphthazarins Related to Natural Pigments

Natural Product Communications, 2018
Amino analogs of echinochrome and ethylmompain, metabolites of sea urchins Scaphechinus mirabilis and Echinothrix diadema , and amino analogs of cristazarin, a metabolite of lichen Cladonia cristatella , were synthesized.
Galina I. Melman, Natalia D. Pokhilo, Lyubov N. Atopkina, Vladimir A. Denisenko, Victor Ph. Anufriev   +4 more
doaj   +1 more source

P27 | THE ECHINOCHROME FROM ARBACIA LIXULA: CHARACTERIZATION AND BIOACTIVE EFFECTS ON ZEBRAFISH EMBRYOS

European Journal of Histochemistry
Echinoderms have always been an important resource for fisheries and aquaculture. More recently, growing interest in the study of natural products and their potential pharmacological applications led researchers to consider them a valuable source of ...
GEI - SOCIETÀ ITALIANA DI BIOLOGIA DELLO SVILUPPO E DELLA CELLULA
doaj   +1 more source

Free Radical Scavenging Activities of Naturally Occurring and Synthetic Analogues of Sea Urchin Naphthazarin Pigments

Natural Product Communications, 2012
Antioxidant activities of minor pigments of sea urchins ( 1–5 ) and synthetic naphthazarins ( 7–13 ) were evaluated and compared with echinochrome A ( 6 ) using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonate ...
Natalia K. Utkina, Natalia D. Pokhilo
doaj   +1 more source

Feed From Waste: A Circular Economy Approach for Sea Urchin Aquaculture

Aquaculture Research, Volume 2026, Issue 1, 2026.
Marine organisms offer a vast and still underutilized reservoir of biomolecules and biomaterials with promising applications across various human sectors. Among them, sea urchins—such as Paracentrotus lividus—stand out due to their high content of biogenic carbonates, making them particularly relevant within circular economy strategies and blue growth ...
L. Meroni, V. Asnaghi, S. Baldassari, G. Drava, G. Caviglioli, S. Marzorati, M. Sugni, M. Chiantore   +7 more
wiley   +1 more source

Squaric Acid Ester-Based Total Synthesis of Echinochrome A

, 2016
The total synthesis of echinochrome A is described. Both key intermediates 5 and 8 were efficiently prepared from diisopropyl squarate 7. Nucleophilic addition of aryllithium 8 to 5, followed by thermal ring-expansion/cyclization of the 1,2-adduct 4 ...
Lanny S. Liebeskind (1867210), Eduardo Peña-Cabrera (2471059)   +1 more
core   +1 more source

Innovative Applications of Marine Macroalgae Polysaccharides in Tissue Engineering and Drug Delivery: A Review Study

Health Science Reports, Volume 8, Issue 11, November 2025.
ABSTRACT Background and Aims Marine macroalgae are abundant sources of bioactive polysaccharides—including alginate, fucoidan, ulvan, carrageenan, and agarose—widely recognized for extensive biomedical applications. These polysaccharides exhibit remarkable biological properties, such as immunostimulatory, anticancer, antioxidant, antimicrobial, and ...
Foroozan Jalalibidgoli, Pardis Irankhahi, Helia Hajihassani, Ali Akbar Ghotbi‐Ravandi   +3 more
wiley   +1 more source

Characterization of cellular and molecular immune components of the painted white sea urchin Lytechinus pictus in response to bacterial infection

Immunology &Cell Biology, Volume 103, Issue 1, Page 45-59, January 2025.
Sea urchins are basal deuterostomes that share key molecular components of innate immunity with humans, and are a powerful model for the study of innate immunity. Here we characterize the morphology and associated molecular markers of immune cell types in a newly developed model sea urchin, Lytechinus pictus.
Katherine T Nesbit, Alexis Cody Hargadon, Gloria D Renaudin, Nicholas D Kraieski, Katherine M Buckley, Emily Darin, Yoon Lee, Amro Hamdoun, Catherine S Schrankel   +8 more
wiley   +1 more source