Results 41 to 50 of about 1,657 (163)

Mechanisms altering airway smooth muscle cell Ca(2+) homeostasis in two asthma models [PDF]

open access: yes, 2008
Background: Asthma is characterized by airway remodeling, altered mucus production and airway smooth muscle cell (ASMC) contraction causing extensive airway narrowing. In particular, alterations of ASMC contractility seem to be of crucial importance. The
Bergner, Albrecht   +6 more
core   +1 more source

Modification of structured bio‑carbon derived from spongin-based scaffolds with nickel compounds to produce a functional catalyst for reduction and oxidation reactions: Potential for use in environmental protection.

open access: yesScience of the Total Environment, 2021
Three different 3D fibrous-like NiO/Ni(OH)2/Ni‑carbonized spongin-based materials were prepared via a simple sorption-reduction method. Depending on the support used, the catalysts were composed of carbon, nickel oxide, nickel hydroxide and zero-valent ...
S. Żółtowska   +6 more
semanticscholar   +1 more source

Biomimetic Graphene/Spongin Scaffolds for Improved Osteoblasts Bioactivity Via Dynamic Mechanical Stimulation.

open access: yesMacromolecular Bioscience, 2021
Biomimetics offers excellent prospects for design a novel generation of improved biomaterials. Here we explore the controlled integration of graphene oxide (GO) derivatives with a 3D marine spongin (MS) network to nanoengineer novel smart bio-based ...
Â. Semitela   +9 more
semanticscholar   +1 more source

Direct Development of Golf Ball Sponges, Genus Craniella (Demospongiae, Tetractinellida) From the Northeast Atlantic Ocean. [PDF]

open access: yesMol Reprod Dev
ABSTRACT Among the eight types of development in sponges, the least common and least studied is direct, non‐larval development during viviparity. To supplement our knowledge of this rare type of demosponge development, we present here a description of the embryonic development of four species of the genus Craniella (Demospongiae, order Tetractinellida)
Cárdenas P   +3 more
europepmc   +2 more sources

Determination of the Halogenated Skeleton Constituents of the Marine Demosponge Ianthella basta

open access: yesMarine Drugs, 2017
Demosponges of the order Verongida such as Ianthella basta exhibit skeletons containing spongin, a collagenous protein, and chitin. Moreover, Verongida sponges are well known to produce bioactive brominated tyrosine derivatives.
Susanne Ueberlein   +3 more
doaj   +1 more source

Microbial communities and bioactive compounds in marine sponges of the family Irciniidae-a review [PDF]

open access: yes, 2014
Marine sponges harbour complex microbial communities of ecological and biotechnological importance. Here, we propose the application of the widespread sponge family Irciniidae as an appropriate model in microbiology and biochemistry research. Half a gram
Anand   +136 more
core   +2 more sources

The spatial structure (3D) and mechanical properties of the sponge Spongilla lacustris L. (Porifera: Spongillida) skeleton as a potential tensegral architecture

open access: yesThe European Zoological Journal, 2022
Complex biological systems often provide ready solutions for contemporary engineering. One such organism might be sponges, primitive, tissueless animals whose evolution over 600 million years has allowed them to become highly specialized.
A. Woźnica   +11 more
doaj   +1 more source

Generation of metabolically functional hepatocyte‐like cells from dedifferentiated fat cells by Foxa2, Hnf4a and Sall1 transduction

open access: yesGenes to Cells, Volume 25, Issue 12, Page 811-824, December 2020., 2020
In this study, we used a comprehensive analysis of the global expression profiles of hepatocytes, mature adipocyte‐derived dedifferentiated fat (DFAT) cells, hepatic stem cells and adipocytes to identify three transcription factors—Foxa2, Hnf4a and Sall1—that can specifically induce hepatocyte differentiation in DFAT cells.
Reiko Hagiwara   +4 more
wiley   +1 more source

Collagens of Poriferan Origin

open access: yesMarine Drugs, 2018
The biosynthesis, structural diversity, and functionality of collagens of sponge origin are still paradigms and causes of scientific controversy. This review has the ambitious goal of providing thorough and comprehensive coverage of poriferan collagens ...
Hermann Ehrlich   +4 more
doaj   +1 more source

Microbe‐Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications

open access: yesAdvanced Materials, Volume 32, Issue 22, June 4, 2020., 2020
Different types of biomineralization, including calcification, silicification, iron, carbon, nitrogen, and phosphorus mineralization, which are mediated by algae, bacteria, fungi, and viruses, are summarized. The mechanisms of extracellular and intracellular microbe‐mediated mineralization, as well as their environmental, industrial, and ...
Wen Qin   +7 more
wiley   +1 more source

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