Early embryogenesis has been examined experimentally in several echinoderm and hemichordate classes. Although these studies suggest that the mechanisms which underlie regional specification have been highly conserved within the echinoderm + hemichordate clade, nothing is known about these mechanisms in several other echinoderm classes, including the Ophiuroidea. In this study, early embryogenes...

ABSTRACT Regeneration as an adult developmental process is in many aspects similar to embryonic development. Although studies point out similarities and differences, no large-scale, direct functional comparative analyses between development regeneration of a specific cell type or structure one animal exist. Here, we use the brittle star Amphiura filiformis characterise role FGF signalling pathw...

Widespread and large populations of the non-native eastern Pacific ophiuroid brittle star Ophiothela mirabilis now occur in southeastern Florida, extending range this recently introduced species from southern Brazil northward to Caribbean Sea Florida. The Florida stars, representing two lineages, are epibionts on shallow (3–18 m depth), tropical/subtropical plexaurid (e.g., Eunicea spp., Murice...

Autotomy and regeneration are widespread in many groups of invertebrates and vertebrates, such as annelids, crustaceans, amphibians, and reptiles. Regeneration is common in all classes of Echinodermata and prevalent in ophiuroid brittle stars. Moorea, French Polynesia was surveyed for species of brittle stars living on coastal areas of the island in different habitats. Ophiuroid populations wer...

Global estimates on aging predict an increased burden of asthma in the older population. Consequently, its recognition, diagnosis, and management in clinical practice require optimization. This review aims to provide an update for clinicians, highlighting advances in the understanding of the aging process and immunosenescence together with their applicability to asthma from a diagnostic and the...

The aim of this study was to determine evolution of T1 unenhanced hypointense lesions (acute or chronic black holes (ABHs, CBHs)) by measuring their magnetization transfer ratio (MTR) changes over 12 months. 40 glatiramer acetate (GA)-naive patients with relapsing-remitting MS who presented with 1 or more contrast-enhancing lesions (CELs) at baseline underwent 1.5-T MRI at baseline and after 12...