Results 21 to 30 of about 4,261 (167)

A microRNA Cluster-Lefty Pathway is Required for Cellulose Synthesis During Ascidian Larval Metamorphosis

Frontiers in Cell and Developmental Biology, 2022
Synthesis of cellulose and formation of tunic structure are unique traits in the tunicate animal group. However, the regulatory mechanism of tunic formation remains obscure.
Xueping Sun, Xiaoming Zhang, Likun Yang, Bo Dong, Bo Dong, Bo Dong   +5 more
doaj   +1 more source

Tunicate mitogenomics and phylogenetics: peculiarities of the Herdmania momus mitochondrial genome and support for the new chordate phylogeny

BMC Genomics, 2009
Background Tunicates represent a key metazoan group as the sister-group of vertebrates within chordates. The six complete mitochondrial genomes available so far for tunicates have revealed distinctive features.
Loya Yossi, Shenkar Noa, Blanquart Samuel, Delsuc Frédéric, Tsagkogeorga Georgia, Singh Tiratha, Douzery Emmanuel JP, Huchon Dorothée   +7 more
doaj   +1 more source

Morphological Study and 3D Reconstruction of the Larva of the Ascidian Halocynthia roretzi

Journal of Marine Science and Engineering, 2021
The swimming larva represents the dispersal phase of ascidians, marine invertebrates belonging to tunicates. Due to its adhesive papillae, the larva searches the substrate, adheres to it, and undergoes metamorphosis, thereby becoming a sessile filter ...
Lucia Manni, Federico Caicci, Chiara Anselmi, Virginia Vanni, Silvia Mercurio, Roberta Pennati   +5 more
doaj   +1 more source

Antioxidant and Anti-inflammatory Extracts From Sea Cucumbers and Tunicates Induce a Pro-osteogenic Effect in Zebrafish Larvae

Frontiers in Nutrition, 2022
Bone metabolic disorders such as osteoporosis are characterized by the loss of mineral from the bone tissue leading to its structural weakening and increased susceptibility to fractures. A growing body of evidence suggests that inflammation and oxidative
Alessio Carletti, Alessio Carletti, Carlos Cardoso, Carlos Cardoso, Jorge Lobo-Arteaga, Jorge Lobo-Arteaga, Sabrina Sales, Diana Juliao, Inês Ferreira, Paula Chainho, Maria Ana Dionísio, Maria J. Gaudêncio, Cláudia Afonso, Cláudia Afonso, Helena Lourenço, M. Leonor Cancela, M. Leonor Cancela, M. Leonor Cancela, M. Leonor Cancela, Narcisa M. Bandarra, Narcisa M. Bandarra, Paulo J. Gavaia, Paulo J. Gavaia   +22 more
doaj   +1 more source

A phylogenomic framework and timescale for comparative studies of tunicates

BMC Biology, 2018
Background Tunicates are the closest relatives of vertebrates and are widely used as models to study the evolutionary developmental biology of chordates. Their phylogeny, however, remains poorly understood, and to date, only the 18S rRNA nuclear gene and
Frédéric Delsuc, Hervé Philippe, Georgia Tsagkogeorga, Paul Simion, Marie-Ka Tilak, Xavier Turon, Susanna López-Legentil, Jacques Piette, Patrick Lemaire, Emmanuel J. P. Douzery   +9 more
doaj   +1 more source

Searching for Novel Sources of Hydrogen Sulfide Donors: Chemical Profiling of Polycarpa aurata Extract and Evaluation of the Anti-Inflammatory Effects

Marine Drugs, 2023
Hydrogen sulfide (H2S) is a signaling molecule endogenously produced within mammals’ cells that plays an important role in inflammation, exerting anti-inflammatory effects.
Marcello Casertano, Erika Esposito, Ivana Bello, Chiara Indolfi, Masteria Yunovilsa Putra, Lorenzo Di Cesare Mannelli, Carla Ghelardini, Marialuisa Menna, Raffaella Sorrentino, Giuseppe Cirino, Roberta d’Emmanuele di Villa Bianca, Concetta Imperatore, Elisabetta Panza, Emma Mitidieri   +13 more
doaj   +1 more source

Immunity in Protochordates: The Tunicate Perspective

Frontiers in Immunology, 2017
Tunicates are the closest relatives of vertebrates, and their peculiar phylogenetic position explains the increasing interest toward tunicate immunobiology. They are filter-feeding organisms, and this greatly influences their defense strategies.
Nicola Franchi, Loriano Ballarin
doaj   +1 more source

Ebf Activates Expression of a Cholinergic Locus in a Multipolar Motor Ganglion Interneuron Subtype in Ciona

Frontiers in Neuroscience, 2021
Conserved transcription factors termed “terminal selectors” regulate neuronal sub-type specification and differentiation through combinatorial transcriptional regulation of terminal differentiation genes.
Sydney Popsuj, Alberto Stolfi
doaj   +1 more source

Phallusiasterols A and B: Two New Sulfated Sterols from the Mediterranean Tunicate Phallusia fumigata and Their Effects as Modulators of the PXR Receptor

Marine Drugs, 2014
Purification of the apolar extracts of the marine ascidian Phallusia fumigata, afforded two new sulfated sterols, phallusiasterols A (1) and B (2). The structures of the new compounds have been elucidated using mass spectrometry and NMR experiments.
Concetta Imperatore, Filomena D'Aniello, Anna Aiello, Stefano Fiorucci, Claudio D'Amore, Valentina Sepe, Marialuisa Menna   +6 more
doaj   +1 more source

Improved Understanding of the Role of Gene and Genome Duplications in Chordate Evolution With New Genome and Transcriptome Sequences

Frontiers in Ecology and Evolution, 2021
Comparative approaches to understanding chordate genomes have uncovered a significant role for gene duplications, including whole genome duplications (WGDs), giving rise to and expanding gene families.
Madeleine E. Aase-Remedios, David E. K. Ferrier   +1 more
doaj   +1 more source