Results 51 to 60 of about 16,938 (165)

The skin microbiome facilitates adaptive tetrodotoxin production in poisonous newts

eLife, 2020
Rough-skinned newts (Taricha granulosa) use tetrodotoxin (TTX) to block voltage-gated sodium (Nav) channels as a chemical defense against predation.
Patric M Vaelli, Kevin R Theis, Janet E Williams, Lauren A O'Connell, James A Foster, Heather L Eisthen   +5 more
doaj   +1 more source

Ketogenic diet for infantile epileptic spasms

Epilepsia Open, EarlyView.
Abstract Approximately half of all cases of Infantile Epileptic Spasms Syndrome (IESS) do not respond to vigabatrin and hormonal therapies. There is no clear consensus as to the second‐line therapy for IESS. Ketogenic diet (KD) has emerged as an effective treatment for certain drug‐resistant epilepsies and in many cases of IESS.
Morris H. Scantlebury, Anamika Choudhary, Andy Cheuk‐Him Ng, Cezar Gavrilovici   +3 more
wiley   +1 more source

In Silico Analysis of Tetrodotoxin Binding in Voltage-Gated Sodium Ion Channels from Toxin-Resistant Animal Lineages

Marine Drugs, 2022
Multiple animal species have evolved resistance to the neurotoxin tetrodotoxin (TTX) through changes in voltage-gated sodium ion channels (VGSCs). Amino acid substitutions in TTX-resistant lineages appear to be positionally convergent with changes in ...
Shana L. Geffeney, Jennie Ann Cordingley, Kenyon Mitchell, Charles T. Hanifin   +3 more
doaj   +1 more source

Triggered Calcium Lightning Programs Cochlear Development

Exploration, EarlyView.
Summary: Before the onset of hearing, the developing inner ear generates spontaneous calcium signals that are thought to guide maturation. In this study, we discovered a rapid and widespread calcium flash—dubbed “Ca2+ lightning”—originating from supporting cells beneath the sensory hair cells, which triggers coordinated calcium waves across the entire ...
Qiang Ma, Hai‐Peng Wang, Yu‐Meng Jiang, Ke Lai, Ming‐Xian Li, Zhen Zhang, Li‐Na Gong, Jing‐Wei Lai, Kai‐Ming Su, Lu‐Yang Wang, Hui Wang, Shan‐Kai Yin, Hao He, Hai‐Bo Shi   +13 more
wiley   +1 more source

Cancer pain: current practice and emerging targets

British Journal of Pharmacology, EarlyView.
Cancer pain (CP) arises from a complex interplay between the tumour and its microenvironment. Many patients experience a mixed pain phenotype that encompasses nociceptive, neuropathic and neuroinflammatory mechanisms, and vary across tumour type and disease stage. Despite decades of intensive research, the mainstay of cancer pain treatment is still non‐
Yi Ye, Marcin Chwistek, Zhiting Gong, Vanessa Uzonwanne, Xiaojie Shi, Arpad Szallasi   +5 more
wiley   +1 more source

The Structural Basis and Functional Consequences of Interactions Between Tetrodotoxin and Voltage-Gated Sodium Channels

Marine Drugs, 2006
: Tetrodotoxin (TTX) is a highly specific blocker of voltage-gated sodium channels. The dissociation constant of block varies with different channel isoforms.
C. Ruben, Shana L. Geffeney
doaj   +1 more source

Inhibition of late sodium current prevents pathological hyperactivation of calcium/calmodulin‐dependent protein kinase IIδ in a murine model of acute doxorubicin‐related cardiotoxicity

British Journal of Pharmacology, EarlyView.
Abstract Background and Purpose Doxorubicin (DOX) is a highly effective anthracycline, whose clinical application for cancer is limited by cardiotoxicity. The mechanisms underlying doxorubicin‐induced toxic cardiomyopathy (DICM) involve electrophysiological remodelling with intracellular Na+ overload because of increased late INa and hyperactivation of
Anna‐Lena Feder, Anna‐Maria Pfützenreuter, Lea Maria Funke, Maria Johanna Baier, Daniel Tarnowski, Laura Stengel, Lars Siegfried Maier, Can Martin Sag   +7 more
wiley   +1 more source

Serotonin engages divergent 5‐HT receptor pathways for cell type‐resolved modulation of prefrontal layer 5 microcircuits

British Journal of Pharmacology, EarlyView.
Serotonin differentially modulates layer 5 mPFC microcircuits through cell type‐specific pre‐ and postsynaptic receptor pathways. Presynaptic 5‐HT1BRs suppress glutamate and GABA release, whereas presynaptic and postsynaptic 5‐HT3ARs enhance fast‐spiking interneuron activity, whilst distinct pyramidal neuron subtypes exhibit divergent 5‐HT1AR‐ and 5 ...
Ramya Rama, Guanxiao Qi, Gabriele Radnikow, Danqing Yang, Dirk Feldmeyer   +4 more
wiley   +1 more source

Tetrodotoxin, fungal pathogen infection, and bacterial microbiome associations are variable in the skin microecosystems of two Taricha newt species

Frontiers in Amphibian and Reptile Science
A diverse metabolome exists on amphibian skin that mediates interactions between hosts and skin microbiomes. Tetrodotoxin is one such metabolite that occurs across a variety of taxa, and is particularly well studied in newts of the genus Taricha that are
Talon Jost, Talon Jost, Alysha Henderson, Brandon LaBumbard, Krisztian Magori, Amber Stokes, Danica Bergin, Autumn Holley, Autumn Holley, Molly Bletz, Molly Bletz, Obed Hernández-Gómez, Gary Bucciarelli, Douglas C. Woodhams, Jonah Piovia-Scott, Jenifer B. Walke   +15 more
doaj   +1 more source

Comparative Transcriptome Analysis of Toxic and Non-Toxic Nassarius Communities and Identification of Genes Involved in TTX-Adaptation

Toxins, 2020
Nassarius has caused serious people poisoning and death incident as a popular food due to tetrodotoxin (TTX) accumulation in their body. Understanding the genetic basis of tetrodotoxin (TTX) transformation and resistance in animals could lead to ...
Shanmei Zou
doaj   +1 more source