Results 61 to 70 of about 40,647 (354)

Dosage of botulinum toxin in patients undergoing treatment for hemifacial spasm: is there modification during follow-up?

open access: yesArquivos de Neuro-Psiquiatria
Background The movement disorder known as hemifacial spasm is characterized by involuntary contractions of the muscles that are innervated by the facial nerve. The treatment of choice for this condition is botulinum toxin injections.
Fátima de Menezes Dantas   +4 more
doaj   +1 more source

Structural Insights into Rational Design of Single-Domain Antibody-Based Antitoxins against Botulinum Neurotoxins. [PDF]

open access: yes, 2020
Botulinum neurotoxin (BoNT) is one of the most acutely lethal toxins known to humans, and effective treatment for BoNT intoxication is urgently needed. Single-domain antibodies (VHH) have been examined as a countermeasure for BoNT because of their high ...
Jin, Rongsheng   +8 more
core  

Positional Relationship Between the Orbicularis Oculi and Zygomaticus Complex Muscles by Ultrasonography: New Anatomical Insights for Crow's Feet Injection

open access: yesClinical Anatomy, EarlyView.
ABSTRACT The orbicularis oculi muscle (OOc) is strongly associated with facial aging as its contraction causes the formation of crow's feet. Botulinum neurotoxin (BoNT) injection is a representative treatment targeting muscle. The aim of this study was to demonstrate the anatomical relationship between the OOc and the zygomaticus complex muscles, and ...
Jiong‐Zhen Piao   +3 more
wiley   +1 more source

Fluid flow enhances the effectiveness of toxin export by aquatic microorganisms: a first-passage perspective on microvilli and the concentration boundary layer [PDF]

open access: yes, 2014
A central challenge for organisms during development is determining a means to efficiently export toxic molecules from inside the developing embryo. For aquatic microorganisms, the strategies employed should be robust with respect to the variable ocean environment and limit the chances that exported toxins are reabsorbed.
arxiv   +1 more source

Rheumatoid arthritis and Hailey‐Hailey disease treated with methotrexate

open access: yesInternational Journal of Rheumatic Diseases, Volume 26, Issue 1, Page 157-159, January 2023., 2023
Abstract We report a rare case of long‐standing Hailey‐Hailey disease in a Caucasian Portuguese 69‐year‐old woman, recently diagnosed with rheumatoid arthritis. The patient's skin lesions remained active and exudative despite topical and oral treatments with corticosteroids, tetracyclines, antifungals, and oral treatment with azathioprine.
Beatriz Mestre   +2 more
wiley   +1 more source

Botulinum neurotoxin X lacks potency in mice and in human neurons

open access: yesmBio
Botulinum neurotoxins (BoNTs) are a class of toxins produced by Clostridium botulinum (C. botulinum) and other species of Clostridia. BoNT/X is a putative novel botulinum neurotoxin identified through genome sequencing and capable of SNARE cleavage, but ...
Brieana M. Gregg   +8 more
doaj   +1 more source

Botulinum Toxins in Medical and Cosmetic Dermatology

open access: yesEuropean Medical Journal Dermatology, 2021
Background: Botulinum toxin (BoNT), a bacterially produced neurotoxin, is a mainstay in the dermatologic armamentarium. Although BoNT is commonly used to treated rhytides associated with ageing, it can be employed for a variety of other cosmetic ...
Margit Juhász   +2 more
doaj   +1 more source

Single-species population models with age structure and psychological effect in a polluted environment [PDF]

open access: yesarXiv, 2022
This paper considers a single-population model with age structure and psychological effects in a polluted environment. We divide the single population into two stages of larval and adult structure. The model uses Logistic input, and the larvae are converted into adult bodies by constant ratio. We only consider adulthood.
arxiv  

Cleaved intracellular SNARE peptides are implicated in a novel cytotoxicity mechanism of botulinum serotype C [PDF]

open access: yes, 2013
Recent advances in intracellular protein delivery have enabled more in-depth analyses of cellular functions. A specialized family of SNARE proteases, known as Botulinum Neurotoxins, blocks neurotransmitter exocytosis, which leads to systemic toxicity ...
Arsenault, Jason   +5 more
core   +1 more source

Harnessing Viral Proteases for Cellular and Molecular Engineering

open access: yesChemistry–Methods, EarlyView.
Engineered viral proteases (VIPs) provide programmable control of protein function with high specificity and low toxicity. Integrated with chemogenetic and optogenetic modules, these VIP systems enable logic gate manipulation for targeted regulation of cell signaling, gene expression, protein secretion, and degradation, thereby offering versatile ...
Mingguang Cui   +2 more
wiley   +1 more source

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