Results 71 to 80 of about 17,066 (197)

Tetrodotoxin and Its Analogues in Cephalothrix cf. simula (Nemertea: Palaeonemertea) from the Sea of Japan (Peter the Great Gulf): Intrabody Distribution and Secretions

Toxins, 2020
Some nemertean species from the genus Cephalothrix accumulate tetrodotoxin (TTX) in extremely high concentrations. The current study is the first to provide high-performance liquid chromatography–tandem mass spectrometry (HPLC–MS/MS) data on tetrodotoxin
Anna E. Vlasenko, Timur Yu. Magarlamov
doaj   +1 more source

Paternal Caffeine Exposure Programs Offspring Stress Vulnerability via Sperm Dlk1‐Dio3 Imprinting‐Directed Remodeling of a Novel Neural Circuit

Advanced Science, Volume 13, Issue 40, 17 July 2026.
The study elucidates that paternal preconception stress can drive offspring hyperresponsivity of the stress system via hypomethylation of a specific DNA region in sperm. This key link is confirmed in a cohort of prospective fathers: the epigenetic alteration is associated with elevated stress hormone levels.
Mengxi Lu, Gaole Dai, Sen Zhu, Shuai Zhang, Tingting Wang, Yuan Meng, Fang Yang, Xiaoyi Han, Hui Wang, Hao Kou, Dan Xu   +10 more
wiley   +1 more source

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

The Microbial Community of Tetrodotoxin-Bearing and Non-Tetrodotoxin-Bearing Ribbon Worms (Nemertea) from the Sea of Japan

Marine Drugs, 2020
A potent marine toxin, tetrodotoxin (TTX), found in a great variety of marine and some terrestrial species, leaves intriguing questions about its origin and distribution in marine ecosystems. TTX-producing bacteria were found in the cultivable microflora
Daria I. Melnikova, Timur Yu. Magarlamov   +1 more
doaj   +1 more source

A High‐Throughput Live Imaging Platform to Investigate Circuit‐Dependent Regulation of Circadian Rhythms in Brain Tissue

Advanced Science, Volume 13, Issue 40, 17 July 2026.
Biological rhythms coordinate physiology, from genes to behavior. Study of circadian rhythms in brain tissue is constrained by limited throughput and spatial and temporal information quality. A new platform for high‐throughput, long‐term multiplexed fluorescent live imaging of circadian rhythms in brain slices is introduced.
Marco Ferrari, Natalie Ness, Julieta Acosta, Marco Brancaccio   +3 more
wiley   +1 more source

Toxic mechanism and detection methods of tetrodotoxin [PDF]

MATEC Web of Conferences
Tetrodotoxin (TTX) was first isolated in the early 20th century and has significant public health implications, especially in areas where puffer fish are consumed, such as Japan.
Xu Yunzhe
doaj   +1 more source

Recent research progress in tetrodotoxin detection and quantitative analysis methods

Frontiers in Chemistry
Tetrodotoxin (TTX) is a highly potent and widely distributed ion-channel marine neurotoxin; it has no specific antidote and poses a great risk to human health.
Chao Lin, Qirong Li, Dong Liu, Qiang Feng, Hengzong Zhou, Bohe Shi, Xinxin Zhang, Yurui Hu, Xinmiao Jiang, Xiaoming Sun, Dongxu Wang   +10 more
doaj   +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

Dexmedetomidine Rapidly Relieves Stress‐Induced Hyperalgesia via Presynaptic α2‐Adrenergic Inhibition at Orbitofrontal–Insular Glutamatergic Synapses

MedComm, Volume 7, Issue 7, July 2026.
This study identified a maladaptive OFC–AIC glutamatergic circuit in stress‐induced hyperalgesia induction. This critical circuit provides an α2‐AR‐dependent braking target for dexmedetomidine to alleviate excessive glutamatergic transmission and hyperalgesia. ABSTRACT Dexmedetomidine (Dex), an α2‐adrenergic receptor (α2‐AR) agonist, is widely used for
Hui Rong, Yang‐Xun Zhang, Huijie Zhu, Yinyao Li, Yunfan Hou, Yun‐Yong Xie, Lu‐Yao Li, Bei‐Bei Zhang, Shu‐Tao Xie, Wei Zhang, Qi‐Peng Zhang, Xiao‐Yang Zhang, Jing‐Ning Zhu, Xiaoping Gu, Zhengliang Ma   +14 more
wiley   +1 more source

Disordered but effective: short linear motifs as gene therapy targets for hyperexcitability disorders

The Journal of Clinical Investigation
Multiple approaches have targeted voltage-gated sodium (Nav) channels for analgesia. In this issue of the JCI, Shin et al. identified a peptide aptamer, NaViPA1, carrying a short polybasic motif flanked by serine residues in a structurally disordered ...
Sulayman D. Dib-Hajj, Stephen G. Waxman
doaj   +1 more source