Results 81 to 90 of about 28,419 (196)

Seasonal Changes in the Tetrodotoxin Content of the Flatworm Planocera multitentaculata

Marine Drugs, 2017
Tetrodotoxin (TTX) is a potent neurotoxin that acts specifically on voltage-gated sodium channels on excitable membranes of muscle and nerve tissues. The biosynthetic process for TTX is unclear, although marine bacteria are generally thought to be the ...
Riko Yamada, Tadasuke Tsunashima, Mitsuki Takei, Tatsunori Sato, Yoshiki Wajima, Makoto Kawase, Shotaro Oshikiri, Yusuke Kajitani, Keita Kosoba, Hiroyuki Ueda, Koko Abe, Shiro Itoi, Haruo Sugita   +12 more
doaj   +1 more source

Electrophysiological properties of the dorsal motor nucleus of the vagus motoneurones controlling airway mucus secretion in rats

The Journal of Physiology, EarlyView.
Abstract figure legend Acidosis depolarises parasympathetic respiratory motoneurones in the dorsal motor nucleus of the vagus (DMV) and increases their firing frequency by reducing TWIK‐2 channel conductance. Acidosis also activates astrocytes, which further enhance neuronal excitability through NMDA receptor‐dependent glutamatergic signalling.
Daniel P. de Souza, Renato W. Martins Sá, Luiza Henrique de Souza, Fernando S. Ramalho, Davi J. A. Moraes   +4 more
wiley   +1 more source

Establishing a protocol to measure tetrodotoxin (TTX) levels in small bodied newts (genus Lissotriton) in western Europe [PDF]

Tetrodotoxin (TTX) is a defence toxin most commonly found in marine organisms, and amphibians are the only land vertebrates (tetrapods) which are known to produce TTX.
Wagstaff, RM
core   +1 more source

Novel Polyclonal Antibody Raised against Tetrodotoxin Using Its Haptenic Antigen Prepared from 4,9-anhydrotetrodotoxin Reacted with 1,2-Ethaneditiol and Further Reacted with Keyhole Limpet Hemocyanin

Toxins, 2019
A novel polyclonal antibody against tetrodotoxin (TTX) was raised using its haptenic antigen, where 4,9-anhydroTTX was reacted with 1,2-ethanedithiol and this derivative was further reacted with keyhole limpet hemocyanin (KLH).
Shigeru Sato, Suzuka Takaishi, Ko Yasumoto, Shugo Watabe   +3 more
doaj   +1 more source

SGIP1 limits cannabinoid receptor signalling in spinal nociceptive synapses and modulates analgesia during neuroinflammation

The Journal of Physiology, EarlyView.
Abstract figure legend SGIP1 constrains presynaptic cannabinoid signalling in the spinal dorsal horn and limits cannabinoid analgesia after inflammation. In vivo (both sexes), SGIP1 KO mice showed a higher baseline heat threshold but unchanged mechanical sensitivity.
Denisa Dresslerova, Monica Pontearso, David Muzik, Anirban Bhattacharyya, Jakub Slepicka, Daniel Vasconcelos, Jiri Palecek, Diana Spicarova   +7 more
wiley   +1 more source

Stereoselective and Efficient Total Synthesis of Optically Active Tetrodotoxin from d-Glucose

, 2016
A stereoselective and efficient total synthesis of optically active tetrodotoxin (TTX) is described. A polyfunctionalized key cyclitol compound containing branched-chains for the synthesis of TTX was prepared from d-glucose employing the Henry reaction ...
Yasuhiro Kajihara (836272), Katsuhiko Suzuki (438832), Juji Yoshimura (2454304), Hirotsugu Shoji (2454301), Shiho Yoshida (2454307), Yutaka Nakamura (356486), Naoki Sugita (2454313), Shoji Akai (1915615), Yoshinao Nagai (2454316), Masuo Funabashi (2454310), Ken-ichi Sato (1915618)   +10 more
core   +3 more sources

Synthetic Approaches to Zetekitoxin AB, a Potent Voltage-Gated Sodium Channel Inhibitor

Marine Drugs, 2019
Voltage-gated sodium channels (NaVs) are membrane proteins that are involved in the generation and propagation of action potentials in neurons. Recently, the structure of a complex made of a tetrodotoxin-sensitive (TTX-s) NaV subtype with saxitoxin (STX),
Kanna Adachi, Hayate Ishizuka, Minami Odagi, Kazuo Nagasawa   +3 more
doaj   +1 more source

Selective modulation of NaV channel gating counteracts aberrant hyperexcitability and rescues motor function and survival in a model of spinal muscular atrophy

British Journal of Pharmacology, Volume 183, Issue 23, Page 6824-6846, December 2026.
Background and Purpose Spinal muscular atrophy (SMA) is a motor neuron disease caused by SMN1 gene loss, leading to reduced survival motor neuron (SMN) protein and progressive motor neuron degeneration. Although SMN‐restoring therapies improve outcomes, residual disease burden and non‐curative efficacy underscore the need for complementary treatments ...
Fernanda C. Cardoso, Jessica A. I. Muller, Yougang Zhang, Jean Giacomotto   +3 more
wiley   +1 more source

Purification and Characterization of Tetrodotoxin-binding Substance in Shore Crab Hemolymph [PDF]

, 2001
P(論文)テトロドトキシン(TTX)は古くからフグ毒の主成分として知られる。1964年にカリフォルニアイモリの毒がTTXに同定されて以来,これまでに微生物から両生類にいたる多種の生物に存在することが明らかにされてきた。TTXは神経細胞のNaチャンネルを選択的にブロックして,神経の興奮を阻害する作用を持つ神経毒であるとされている。TTXを保有しない一般の硬骨魚類のTTXの腹腔内投与に対する抵抗性はマウスと同程度の体重20g当たり約1MUである。これに対して ...
楠田, 理一, 河原, 栄二郎, 26304, 26303, 松居, 隆, 26306, 26305, 金辻, 宏明, 山森, 邦夫, 26307   +9 more
core  

Tetrodotoxin: Chemistry, Toxicity, Source, Distribution and Detection

Toxins, 2014
Tetrodotoxin (TTX) is a naturally occurring toxin that has been responsible for human intoxications and fatalities. Its usual route of toxicity is via the ingestion of contaminated puffer fish which are a culinary delicacy, especially in Japan.
Vaishali Bane, Mary Lehane, Madhurima Dikshit, Alan O'Riordan, Ambrose Furey   +4 more
doaj   +1 more source