Results 21 to 30 of about 43,184 (300)

Release of vasopressin from isolated permeabilized neurosecretory nerve terminals is blocked by the light chain of botulinum A toxin [PDF]

, 1990
The intracellular action on exocytosis of botulinim A toxin and constituent chains was studied using permeabilized isolated nerve endings from the rat neural lobe. The release of the neuropeptide vasopressin was measured by radioimmunoassay.
Dayanithi, G., Ahnert-Hilger, G., Weller, U., Nordmann, J. J., Gratzl, Manfred   +4 more
core   +6 more sources

Availability of Guanitoxin in Water Samples Containing Sphaerospermopsis torques-reginae Cells Submitted to Dissolution Tests

Pharmaceuticals, 2020
Guanitoxin (GNT) is a potent neurotoxin produced by freshwater cyanobacteria that can cause the deaths of wild and domestic animals. Through reports of animal intoxication by cyanobacteria cells that produce GNT, this study aimed to investigate the bio ...
Kelly Afonsina Fernandes, Humberto Gomes Ferraz, Fanny Vereau, Ernani Pinto   +3 more
doaj   +1 more source

Synthesis-Driven Stereochemical Assignment of Marine Polycyclic Ether Natural Products

Marine Drugs, 2021
Marine polycyclic ether natural products have gained significant interest from the chemical community due to their impressively huge molecular architecture and diverse biological functions.
Haruhiko Fuwa
doaj   +1 more source

The effects of a sodium and a calcium channel blocker on lethality of mice injected with the yellow scorpion (Leiurus quinquestriatus) venom

Journal of Venomous Animals and Toxins including Tropical Diseases, 2005
Scorpion venom toxins generally produce similar effects by mainly acting on sodium channels, and to a lesser extent, on potassium, calcium, and chloride channels.
A. R. Al-Shanawani, A. J. Fatani, F. H. El-Sayed   +2 more
doaj   +1 more source

Venomics Approach Reveals a High Proportion of Lactrodectus-Like Toxins in the Venom of the Noble False Widow Spider Steatoda nobilis

Toxins, 2020
The noble false widow spider Steatoda nobilis originates from the Macaronesian archipelago and has expanded its range globally. Outside of its natural range, it may have a negative impact on native wildlife, and in temperate regions it lives in ...
John P. Dunbar, Antoine Fort, Damien Redureau, Ronan Sulpice, Michel M. Dugon, Loïc Quinton   +5 more
doaj   +1 more source

Quantitative Mass Spectrometry for Bacterial Protein Toxins — A Sensitive, Specific, High-Throughput Tool for Detection and Diagnosis

Molecules, 2011
Matrix-assisted laser-desorption time-of-flight (MALDI-TOF) mass spectrometry (MS) is a valuable high-throughput tool for peptide analysis. Liquid chromatography electrospray ionization (LC-ESI) tandem-MS provides sensitive and specific quantification of
Suzanne Kalb, Conrad P. Quinn, John R. Barr, Hercules Moura, Renato C. Lins, Zsuzsanna Kuklenyik, Adrian Woolfitt, Maribel Gallegos-Candela, Anne E. Boyer   +8 more
doaj   +1 more source

Discovery of an Insect Neuroactive Helix Ring Peptide from Ant Venom

Toxins, 2023
Ants are among the most abundant terrestrial invertebrate predators on Earth. To overwhelm their prey, they employ several remarkable behavioral, physiological, and biochemical innovations, including an effective paralytic venom.
Valentine Barassé, Laurence Jouvensal, Guillaume Boy, Arnaud Billet, Steven Ascoët, Benjamin Lefranc, Jérôme Leprince, Alain Dejean, Virginie Lacotte, Isabelle Rahioui, Catherine Sivignon, Karen Gaget, Mélanie Ribeiro Lopes, Federica Calevro, Pedro Da Silva, Karine Loth, Françoise Paquet, Michel Treilhou, Elsa Bonnafé, Axel Touchard   +19 more
doaj   +1 more source

Considerations for the Use of Minimally Invasive Aesthetic Procedures for Facial Remodeling in Transgender Individuals

Clinical, Cosmetic and Investigational Dermatology, 2021
Koenraad De Boulle,1 Nobutaka Furuyama,2 Izolda Heydenrych,3,4 Terrence Keaney,5 Alexander Rivkin,6 Vincent Wong,7 Michael Silberberg8 1Aalst Dermatology Clinic, Aalst, Belgium; 2Jiyugaoka Clinic, Medical Corporation, Tokyo, Japan; 3Cape Town Cosmetic ...
De Boulle K, Furuyama N, Heydenrych I, Keaney T, Rivkin A, Wong V, Silberberg M   +6 more
doaj  

Short Linear Motifs Characterizing Snake Venom and Mammalian Phospholipases A2

Toxins, 2021
Snake venom phospholipases A2 (PLA2s) have sequences and structures very similar to those of mammalian group I and II secretory PLA2s, but they possess many toxic properties, ranging from the inhibition of coagulation to the blockage of nerve ...
Caterina Peggion, Fiorella Tonello
doaj   +1 more source

The rab3A-22A chimera prevents sperm exocytosis by stabilizing open fusion pores [PDF]

, 2016
At the final stage of exocytotis, a fusion pore opens between the plasma and a secretory vesicle membranes; typically, when the pore dilates the vesicle releases its cargo.
Bustos, Matias Alberto, De la Iglesia, Paola X., Lucchesi, Ornella, Pocognoni, Cristián Adrián, Quevedo, María Florencia, Tomes, Claudia Nora   +5 more
core   +1 more source