What is a drug?
A synthetic or non-synthetic substance synthesized outside of the organism that produces effects or alters bodily functions
- Used in the diagnosis, treatment or prevention of a disease or as a component of medication
What is pharmacology?
The study of drugs (their origin, chemistry, nature, effects and mechanisms of action)
What is an active ingredient?
The substance in a drug that is pharmacologically active
Why do drugs cause effects?
Due to their interaction with receptors (cellular molecules)
What elements are relevant to the ability of drugs to act as receptors?
Drug size, atomic composition, charge and shape
What are pharmacodynamics?
The action of a drug on the body through its receptor interactions (biochemical & physiological effects)
What are pharmacokinetics?
The action of the body on a drug (drug’s absorption, distribution & elimination)
What are the usages of plant compounds?
Ritualistic, religious or magical, medicinal, toxic or poisonous and recreational
What plant was used for ritualistic, religious or magical use? In what context?
Atropa belladonna (belladonna) used in the context of witchcraft
What were potions in the Middle Ages often prepared with?
Plants from the Solanaceae family
What are active compounds in plants of the Solanaceae family?
Atropine and scopolamine
What could the concept of witches ‘flying on broomsticks’ be associated to?
The hallucinogenic effects of the drugs of the Solanaceae plants
- They would rub plant potions on their legs and believed they were flying
What are ways drugs can be used during medicinal use?
To treat and cure diseases or to prevent them
What plant species had a medicinal use?
Willow trees (Salix babylonica)
Who recorded the medicinal use of willow trees?
Dioscorides in his De Materia Medica
What do willow trees have a history of treating?
Gout, rheumatism, toothache and earache
What is the active ingredient in willow? What is it?
Salicin - a glycoside that is broken down into salicylic acid when ingested
What is the synthetic version of salicylic acid called?
Aspirin
What can toxic/poisonous plants be used for?
Murder
How was Socrates murdered?
Using poison hemlock (Conium maculatum)
What is the active compound of Conium maculatum?
An alkaloid called coniine
What compound was involved in the death of Georgi Markov? What plant does it come from?
Ricin - a protein
Found in Ricinus communis (castor bean/oil plant)
What is lectin?
A carbohydrate-binding protein
What are Castor plants also used for?
Ornamental purposes in gardens, or the oil is used in soaps, lubricants, paints, dyes, waxes, inks, etc. and used as a laxative