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Related Concept Videos

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...
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...
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...
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...
Teratogenicity01:07

Teratogenicity

The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions01:27

Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions

Nondepolarizing neuromuscular blockers prevent the membrane depolarization of muscle cells and inhibit muscle contraction. These are usually administered with anesthetics to achieve complete muscle relaxation. Upon administration, these drugs first block the small, rapidly contracting muscles of the face and hands, followed by the larger muscles of the trunk and the intercostal muscles. The diaphragm is the last muscle to be affected.
Although all competitive neuromuscular blockers are designed...

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Updated: Jul 19, 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 and pregnancy.

Erica de Oliveira Monteiro1

  • 1Dermatology Cosmetic Center Federal University of São Paulo, Brazil. erica@dermatologia.com.br

Skinmed
|November 7, 2006
PubMed
Summary

Botulinum toxin type A injections during early pregnancy did not result in adverse effects for two women and their healthy newborns. This suggests potential safety for incidental first-trimester exposure in cosmetic procedures.

Area of Science:

  • Obstetrics and Gynecology
  • Dermatology
  • Toxicology

Background:

  • Botulinum toxin type A is increasingly used in cosmetic procedures.
  • Accidental exposure during pregnancy is possible.
  • Limited data exists on the safety of botulinum toxin type A during early pregnancy.

Observation:

  • Two pregnant women received botulinum toxin type A injections in the first trimester, unaware of their pregnancies.
  • Patient 1 received 54 units for periorbital lines at 6 weeks gestation.
  • Patient 2 received 65 units for facial dynamic lines at 5 weeks gestation.

Findings:

  • Both patients delivered healthy, full-term babies via cesarean section.
  • Apgar scores for both infants were 9/10.
  • No complications or detectable adverse fetal effects were observed in either case.

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A High-throughput-compatible FRET-based Platform for Identification and Characterization of Botulinum Neurotoxin Light Chain Modulators
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A High-throughput-compatible FRET-based Platform for Identification and Characterization of Botulinum Neurotoxin Light Chain Modulators

Published on: December 27, 2013

A High Content Imaging Assay for Identification of Botulinum Neurotoxin Inhibitors
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A High Content Imaging Assay for Identification of Botulinum Neurotoxin Inhibitors

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Related Experiment Videos

Last Updated: Jul 19, 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

A High-throughput-compatible FRET-based Platform for Identification and Characterization of Botulinum Neurotoxin Light Chain Modulators
10:30

A High-throughput-compatible FRET-based Platform for Identification and Characterization of Botulinum Neurotoxin Light Chain Modulators

Published on: December 27, 2013

A High Content Imaging Assay for Identification of Botulinum Neurotoxin Inhibitors
14:10

A High Content Imaging Assay for Identification of Botulinum Neurotoxin Inhibitors

Published on: November 14, 2014

Implications:

  • Incidental, single-dose exposure to botulinum toxin type A in the first trimester may not pose a significant risk to fetal development.
  • Further research is warranted to establish definitive safety guidelines.
  • This case series provides preliminary evidence for managing accidental exposures in pregnant patients undergoing cosmetic treatments.