Acriflavine (

INN Inns are generally establishments or buildings where travelers can seek lodging, and usually, food and drink. Inns are typically located in the country or along a highway; before the advent of motorized transportation they also provided accommo ...

: acriflavinium chloride) is a topical

antiseptic An antiseptic (from Greek ἀντί ''anti'', "against" and σηπτικός ''sēptikos'', "putrefactive") is an antimicrobial substance or compound that is applied to living tissue/skin to reduce the possibility of infection, sepsis, or putre ...

. It has the form of an orange or brown powder. It may be harmful in the eyes or if inhaled. It is a dye and it stains the skin and may irritate. The

hydrochloride In chemistry, a hydrochloride is an acid salt resulting, or regarded as resulting, from the reaction of hydrochloric acid with an organic base (e.g. an amine). An alternative name is chlorhydrate, which comes from French. An archaic alternative na ...

form is more irritating than the neutral form. It is derived from

acridine Acridine is an organic compound and a nitrogen heterocycle with the formula C13H9N. Acridines are substituted derivatives of the parent ring. It is a planar molecule that is structurally related to anthracene with one of the central CH groups re ...

. Commercial preparations are often mixtures with

proflavine Proflavine, also called proflavin and diaminoacridine, is an acriflavine derivative, a disinfectant bacteriostatic against many gram-positive bacteria. It has been used in the form of the dihydrochloride and hemisulfate salts as a topical antisepti ...

. It is known by a variety of commercial names.

Uses

Medical use

Acriflavine was developed in 1912 by

Paul Ehrlich Paul Ehrlich (; 14 March 1854 – 20 August 1915) was a Nobel Prize-winning German physician and scientist who worked in the fields of hematology, immunology, and antimicrobial chemotherapy. Among his foremost achievements were finding a cure ...

, a German medical researcher, and was used during the

First World War World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

against

sleeping sickness African trypanosomiasis, also known as African sleeping sickness or simply sleeping sickness, is an insect-borne parasitic infection of humans and other animals. It is caused by the species ''Trypanosoma brucei''. Humans are infected by two typ ...

and as a topical antiseptic.acriflavine ''Encyclopædia Britannica''
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Other uses

Acriflavine is used in biochemistry for fluorescently labeling high molecular weight RNA. It is used as treatment for external

fungal infection Fungal infection, also known as mycosis, is disease caused by fungi. Different types are traditionally divided according to the part of the body affected; superficial, subcutaneous, and systemic. Superficial fungal infections include common ti ...

s of aquarium fish.

Research

In an

animal model An animal model (short for animal disease model) is a living, non-human, often genetic-engineered animal used during the research and investigation of human disease, for the purpose of better understanding the disease process without the risk of ha ...

, acriflavine has been shown to inhibit

HIF-1 Hypoxia-inducible factors (HIFs) are transcription factors that respond to decreases in available oxygen in the cellular environment, or hypoxia. They are only present in parahoxozoan animals. Discovery The HIF transcriptional complex w ...

, which prevents blood vessels growing to supply tumors with blood and interferes with glucose uptake and use. Acriflavine might be effective in fighting common cold virus, and also aid the fight against increasingly antibiotic resistant bacteria because it can cure (remove) plasmids containing antimicrobial resistance genes from Gram positive bacteria. Since 2014, acriflavine has been undergoing testing as an antimalarial drug to treat parasites with resistance to

quinine Quinine is a medication used to treat malaria and babesiosis. This includes the treatment of malaria due to ''Plasmodium falciparum'' that is resistant to chloroquine when artesunate is not available. While sometimes used for nocturnal leg cr ...

and modern anti-parasitic medicines.

Legal status

Australia

Acriflavine is a controlled substance in Australia and dependent on situation, is considered either a Schedule 5 (Caution) or Schedule 7 (Dangerous Poison) substance. The use, storage and preparation of the chemical is subject to strict state and territory laws.

References

External links

*{{Commons category-inline
ChemExper Chemical Directory
Antiseptics Quaternary ammonium compounds Acridine dyes Chlorides