The History of Botulinum Toxin
The history of Botulinum Toxin, often referred to as “botox”, is a fascinating journey that spans over several decades. This potent neurotoxin, produced by the bacterium Clostridium botulinum, has found its place in the world of cosmetic dermatology, offering a non-surgical solution to a variety of aesthetic concerns.
The discovery of Botulinum Toxin dates back to the 19th century when a German physician, Justinus Kerner, first identified it while investigating a series of food poisoning cases. Kerner coined the term “botulism” from the Latin word for sausage, “botulus,” as the affected individuals had consumed improperly prepared sausages. He was the first to recognize the paralytic symptoms of botulism and postulated the existence of a “fatty poison” that interfered with the transmission of nerve impulses.
In the early 20th century, Emile Pierre van Ermengem, a Belgian bacteriologist, isolated the bacterium we now know as Clostridium botulinum. He discovered that the bacterium produced a toxin that caused the symptoms of botulism. This marked the first step in understanding the nature of this potent neurotoxin.
The therapeutic potential of Botulinum Toxin was not realized until the mid-20th century. During the 1940s and 1950s, scientists at the United States Army’s biological warfare laboratories at Fort Detrick, Maryland, conducted extensive research on Botulinum Toxin as a potential biological weapon. Although the military applications of the toxin were never fully realized, this research paved the way for understanding the toxin’s therapeutic potential.
In the 1960s, Dr. Alan B. Scott, an ophthalmologist, began investigating the potential use of Botulinum Toxin to treat strabismus (crossed eyes), a condition that was difficult to treat surgically. His research led to the development of a purified and diluted form of the toxin that could be injected into muscles to cause temporary paralysis. In 1989, the U.S. Food and Drug Administration (FDA) approved the use of Botulinum Toxin type A (marketed as Botox) for the treatment of strabismus and blepharospasm (uncontrolled blinking).
The cosmetic applications of Botulinum Toxin were discovered somewhat serendipitously. Jean Carruthers, a Canadian ophthalmologist, noticed that her patients who received Botox treatments for eye disorders also experienced improvement in facial wrinkles. This observation led to a series of studies conducted by Jean and her husband, Alastair Carruthers, a dermatologist, which eventually led to the FDA approval of Botox for cosmetic use in 2002.
Since then, the use of Botulinum Toxin in cosmetic dermatology has skyrocketed. It is now used to treat a variety of conditions, including forehead wrinkles, crow’s feet, and frown lines. The toxin works by blocking the nerve signals to the muscles, causing them to relax and reducing the appearance of wrinkles.
The journey of Botulinum Toxin from a deadly poison to a beloved wrinkle reducer is a testament to the power of scientific research and innovation. As our understanding of this potent neurotoxin continues to grow, so too will its applications in cosmetic dermatology and beyond.
Different Botulinum Toxins
BOTOX Cosmetic (onabotulinumtoxinA):
Indication
This drug is used in adults for temporary improvement in the appearance of moderate to severe glabellar lines (lines between the eyebrows) associated with corrugator and/or procerus muscle activity. It is also indicated for the treatment of moderate to severe lateral canthal lines (crow’s feet) associated with orbicularis oculi activity, and moderate to severe forehead lines associated with frontalis muscle activity.
Dilution
This drug is supplied in single-dose 50 Units and 100 Units per vial. It should be reconstituted with sterile, preservative-free 0.9% Sodium Chloride Injection USP to obtain a solution at a concentration of 4 Units/0.1 mL. The reconstituted BOTOX Cosmetic should be clear, colorless, and free of particulate matter. It should be administered within 24 hours after reconstitution and stored in a refrigerator during this time period. The vials are for single-dose only.
Administration
The drug is administered intramuscularly into five sites, two each corrugator muscle and one in the procerus muscle for a total dose of 20 Units. The dosage for simultaneous treatment with lateral canthal lines is 64 Units, comprised of 20 Units for forehead lines, 20 Units for glabellar lines, and 24 Units for lateral canthal lines. The drug should be administered no closer than 1 cm above the central eyebrow to reduce the risk of ptosis.
Storage
The product is supplied as a vacuum-dried powder in single-dose vials of 50 or 100 Units. Unopened vials should be stored in a refrigerator (2° to 8°C). Reconstituted BOTOX Cosmetic should also be stored in a refrigerator and used within 24 hours.
DYSPORT (abobotulinumtoxinA):
Indication
This drug is indicated for the temporary improvement in the appearance of moderate to severe glabellar lines associated with procerus and corrugator muscle activity in adults less than 65 years of age.
Dilution
This drug is supplied as a dry powder in single-dose 300 Unit and 500 Unit vials. It should be reconstituted with preservative-free 0.9% Sodium Chloride Injection, USP using aseptic technique. The reconstituted DYSPORT should be a clear, colorless solution, free of particulate matter. It should be used for only one injection session and for only one patient. Once reconstituted, it can be stored in a refrigerator, protected from light for up to 24 hours until time of use.
Administration
The dose for the treatment of glabellar lines in adults is a total of 50 Units given intramuscularly in five equal aliquots of 10 Units each to achieve clinical effect. The drug should be administered no more frequently than every three months. To reduce the risk of ptosis, the drug should be injected at least 1 centimeter above the bony supraorbital ridge and no closer than 1 centimeter above the central eyebrow.
Storage
This is supplied as a sterile, lyophilized powder in a single-dose, glass vial. Unopened vials must be stored refrigerated (2°C to 8°C) and protected from light.
Originally published at Botox Training Columbus
