Results 21 to 30 of about 2,652 (209)

Length Is Associated with Pain: Jellyfish with Painful Sting Have Longer Nematocyst Tubules than Harmless Jellyfish. [PDF]

PLoS ONE, 2015
A large number of humans are stung by jellyfish all over the world. The stings cause acute pain followed by persistent pain and local inflammation. Harmful jellyfish species typically cause strong pain, whereas harmless jellyfish cause subtle or no pain.
Ryuju Kitatani, Mayu Yamada, Michiya Kamio, Hiroshi Nagai   +3 more
doaj   +1 more source

Proteome of Hydra Nematocyst [PDF]

Journal of Biological Chemistry, 2012
Stinging cells or nematocytes of jellyfish and other cnidarians represent one of the most poisonous and sophisticated cellular inventions in animal evolution. This ancient cell type is unique in containing a giant secretory vesicle derived from the Golgi apparatus.
Prakash G, Balasubramanian, Anna, Beckmann, Uwe, Warnken, Martina, Schnölzer, Andreas, Schüler, Erich, Bornberg-Bauer, Thomas W, Holstein, Suat, Özbek   +7 more
openaire   +2 more sources

Differing Effects of Vinegar on Pelagia noctiluca (Cnidaria: Scyphozoa) and Carybdea marsupialis (Cnidaria: Cubozoa) Stings—Implications for First Aid Protocols

Toxins, 2021
The jellyfish species that inhabit the Mediterranean coastal waters are not lethal, but their stings can cause severe pain and systemic effects that pose a health risk to humans. Despite the frequent occurrence of jellyfish stings, currently no consensus
Ainara Ballesteros, Macarena Marambio, Verónica Fuentes, Mridvika Narda, Andreu Santín, Josep-Maria Gili   +5 more
doaj   +1 more source

A small molecule screen identifies novel inhibitors of mechanosensory nematocyst discharge in Hydra

Scientific Reports, 2021
Cnidarians are characterized by the possession of stinging organelles, called nematocysts, which they use for prey capture and defense. Nematocyst discharge is controlled by a mechanosensory apparatus with analogies to vertebrate hair cells.
Diana Hofmann, Niharika Garg, Simone Grässle, Sylvia Vanderheiden, Bruno Gideon Bergheim, Stefan Bräse, Nicole Jung, Suat Özbek   +7 more
doaj   +1 more source

A Study of Nematocyst Discharge of Physalia physalis and Venom Composition

Biology and Life Sciences Forum, 2023
In this work, we studied the effects of various chemicals on P. physalis nematocyst discharge and the composition of the released venom. The exposure of nematocyst to K+ and Na+ induced a massive discharge in a short time of exposure. Conversely, the Ca2+
Duarte Toubarro, Zuzanna Tomkielska, Liliana Silva, Margarida Borges, Nelson Simões   +4 more
doaj   +1 more source

Neuro- and Cardiotoxins from Sea Anemones: Structure, Function and Potential of Application in Research and Medical Practice

Вестник войск РХБ защиты, 2023
Sea anemones are well-spread everywhere in the World Ocean and represent the most ancient active poisonous organisms. Their main instrument of attack on other animals are the nematocysts – stinging organelles with the curtailed hollow thread with ...
R. S. Kalina, M. M. Monastyrnaya
doaj   +1 more source

Cnidome and Morphological Features of Pelagia noctiluca (Cnidaria: Scyphozoa) Throughout the Different Life Cycle Stages

Frontiers in Marine Science, 2021
Pelagia noctiluca is considered the most important jellyfish in the Mediterranean Sea, due to its abundance and the severity of its stings. Despite its importance in marine ecosystems and the health problems caused by its massive arrival in coastal areas,
Ainara Ballesteros, Carina Östman, Andreu Santín, Macarena Marambio, Mridvika Narda, Josep-Maria Gili   +5 more
doaj   +1 more source

Nanosecond-scale kinetics of nematocyst discharge [PDF]

Current Biology, 2006
Document S1. Supplemental Experimental ProceduresxDownload (.15 MB ) Document S1.
Nüchter, Timm, Benoit, Martin, Engel, Ulrike, Özbek, Suat, Holstein, Thomas W.   +4 more
openaire   +2 more sources

Mini-Collagens in Hydra Nematocytes [PDF]

, 1991
We have isolated and characterized four collagen-related c-DNA clones (N-COL 1, N-COL 2, N-COL 3, N-COL 4) that are highly expressed in developing nematocytes in hydra.
David, Charles N., Engel, Jürgen, Holstein, Thomas W., Kurz, Eva, Petri, Barbara M.   +4 more
core   +2 more sources

Acontia and mesentery nematocysts of the sea anemone Metridium senile (Linnaeus, 1761) (Cnidaria: Anthozoa)

Scientia Marina, 2010
Acontia and mesentery nematocysts of Metridium senile (Linnaeus, 1761) are described from interference- contrast light micrographs (LMs) and scanning electron micrographs (SEMs).
Carina Östman, Jens Roat Kultima, Carsten Roat, Karl Rundblom   +3 more
doaj   +1 more source