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Related Concept Videos

Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin01:26

Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin

Directly acting muscle relaxants like dantrolene and botulinum toxin (BoNT) have distinct mechanisms and applications. Dantrolene, a hydantoin derivative, acts on the ryanodine receptor (RYR1) in skeletal muscle cells. RYR1 are calcium channels present at the sarcoplasmic reticulum membrane. In response to excitation, they release calcium ions from the sarcoplasmic reticulum to the cytosol. Calcium promotes actin-myosin-mediated contraction of muscles.
The binding of dantrolene to the RYR1...
Botulism01:22

Botulism

Botulism is a life-threatening neuroparalytic condition caused by botulinum neurotoxin, which is produced by the bacterium Clostridium botulinum, a Gram-positive, spore-forming, obligate anaerobe.In adults, the toxin enters the body in different ways: in foodborne botulism, the preformed toxin is absorbed in the intestine. In wound botulism, spores grow in injured tissue and release the toxin into the blood. Infant botulism differs mechanistically from adult forms. In infants, botulism commonly...
Skeletal Muscle Relaxants: Therapeutic Uses01:31

Skeletal Muscle Relaxants: Therapeutic Uses

Skeletal muscle relaxants are used to relax muscle tone and alleviate painful muscle contractions. However, the choice of skeletal muscle relaxants depends on the duration of the surgical procedure in order to minimize potential side effects. Skeletal muscle relaxants like neuromuscular blocking agents [NMBAs] are commonly employed as adjuvants alongside general anesthetics in clinical settings. NMBAs are also used to maintain controlled ventilation during surgery of the larynx or pharynx as...
Tetanus01:29

Tetanus

Tetanus is a life-threatening neurological disorder characterized by persistent muscle contractions and spastic paralysis. It is caused by Clostridium tetani, a motile, Gram-positive, rod-shaped, obligate anaerobe. These bacteria produce terminal endospores, giving them a distinctive “lollipop” or “tennis-racket” appearance. They thrive in anaerobic environments, such as those found in deep puncture wounds.Once introduced into the body, the spores germinate into vegetative cells. These cells...
Myasthenia Gravis: Overview and Treatment01:20

Myasthenia Gravis: Overview and Treatment

Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which leads...
Classification of Skeletal Muscle Relaxants01:28

Classification of Skeletal Muscle Relaxants

Skeletal muscle relaxants are a group of drugs that can reduce muscle stiffness and induce temporary paralysis to relieve pain. These agents can act centrally to reduce muscle tone or spasms in painful conditions such as multiple sclerosis (MS), amyotrophic lateral sclerosis (ALS), or spinal injuries; they are called antispasmodics or spasmolytics.
Peripherally acting skeletal muscle relaxants interfere with the neurotransmission at the neuromuscular end plate to induce paralysis during...

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Related Experiment Video

Updated: Jun 21, 2026

Isolation and Quantification of Botulinum Neurotoxin From Complex Matrices Using the BoTest Matrix Assays
12:25

Isolation and Quantification of Botulinum Neurotoxin From Complex Matrices Using the BoTest Matrix Assays

Published on: March 3, 2014

[Botulinum toxin in disabling dermatological diseases].

R Messikh1, L Atallah, F Aubin

  • 1Service de Dermatologie, CHU Saint-Jacques, Université de Franche-Comté, INSERM U645, 25030 Besançon cedex.

Annales De Dermatologie Et De Venereologie
|July 7, 2009
PubMed
Summary

Botulinum toxin offers a novel treatment for various skin conditions, particularly when standard therapies fail. It shows promise for hyperhidrosis and related disorders, as well as neurological and sensitive skin issues.

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Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea
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Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea

Published on: November 9, 2016

Related Experiment Videos

Last Updated: Jun 21, 2026

Isolation and Quantification of Botulinum Neurotoxin From Complex Matrices Using the BoTest Matrix Assays
12:25

Isolation and Quantification of Botulinum Neurotoxin From Complex Matrices Using the BoTest Matrix Assays

Published on: March 3, 2014

Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea
07:05

Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea

Published on: November 9, 2016

Area of Science:

  • Dermatology
  • Neurology

Context:

  • Botulinum toxin is increasingly recognized as a therapeutic agent for dermatological conditions.
  • Conventional treatments are often insufficient for specific cutaneous disorders.

Purpose:

  • To explore the efficacy of botulinum toxin in treating a range of skin conditions.
  • To highlight its potential in managing hyperhidrosis-related and neurological dermatoses.

Summary:

  • Botulinum toxin demonstrates effectiveness in treating palmar and plantar hyperhidrosis, dyshidrosis, eccrine hidrocystomas, hidradenitis suppurativa, and Frey syndrome.
  • It also benefits conditions exacerbated by hyperhidrosis, including Hailey-Hailey disease, Darier disease, inversed psoriasis, and aquagenic palmoplantar keratoderma.
  • Furthermore, botulinum toxin shows potential for sensitive skin disorders and neurological conditions like anal fissures, leg ulcers, lichen simplex, notalgia paresthetica, vestibulitis, and cutis laxa.

Impact:

  • Botulinum toxin represents a promising alternative treatment for refractory dermatological conditions.
  • Expands therapeutic options for patients with hyperhidrosis and associated or neurological skin disorders.
  • Suggests a broader application of botulinum toxin in managing complex cutaneous diseases.