chemistry

Rotigotine

Rotigotine is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Rotigotine rather than just read about it. In short: Rotigotine, sold under the brand name Neupro among others, is a dopamine agonist of the non-ergoline class of medications indicated for the treatment of Parkinson's disease and restless legs syndrome. It is formulated as a once-daily transdermal patch which provides a slow and constant supply of the drug over the course of 24 hours.

Key takeaways

Rotigotine belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Rotigotine to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Rotigotine from memory before moving on to harder problems.

Reference excerpt

Rotigotine, sold under the brand name Neupro among others, is a dopamine agonist of the non-ergoline class of medications indicated for the treatment of Parkinson's disease and restless legs syndrome. It is formulated as a once-daily transdermal patch which provides a slow and constant supply of the drug over the course of 24 hours. Like other dopamine agonists, rotigotine has been shown to possess antidepressant effects and may be useful in the treatment of depression as well.

Side effects General side effects for rotigotine may include constipation, dyskinesia, nausea, vomiting, dizziness, fatigue, insomnia, somnolence, confusion, and hallucinations. More serious complications can include psychosis and impulse-control disorders like hypersexuality, punding, and pathological gambling. Mild adverse skin reactions at the patch application site may also occur.

Pharmacology Rotigotine acts as a non-selective agonist of the dopamine D1, D2, D3, and, to a lesser extent, D4 and D5 receptors, with highest affinity for the D3 receptor. In terms of affinity, rotigotine has 10-fold selectivity for the D3 receptor over the D2, D4, and D5 receptors and 100-fold selectivity for the D3 receptor over the D1 receptor. In functional studies however, rotigotine behaves as a full agonist of D1, D2, and D3 with similar potencies (EC50). Its ability to activate both D1-like and D2-like receptors is similar to the case of apomorphine (which notably has greater efficacy in the treatment of Parkinson's disease than D2-like-selective agonists but has suboptimal pharmacokinetic properties) and pergolide but unlike pramipexole and ropinirole.

All affinities listed were assayed using human materials except that for α2B-adrenergic which was done with NG 108–15 cells. Rotigotine behaves as a partial or full agonist (depending on the assay) at all dopamine receptors listed, as an antagonist at the α2B-adrenergic receptor, and as a partial agonist at the 5-HT1A receptor. Though it has affinity for a large number of sites as shown above, at clinical doses rotigotine behaves mostly as a selective D1-like (D1, D5) and D2-like (D2, D3, D4) receptor agonist, with its α2B-adrenergic and 5-HT1A activity also possibly having some minor relevance.

History Initially developed at the University of Groningen in 1985 as N-0437, Aderis Pharmaceuticals acquired rotigotine and continued development toward commercialization. In 1998, Aderis globally out-licensed rotigotine for development and commercialization to Schwarz Pharma, which firm was acquired by UCB S.A. in 2006. Schwarz completed acquisition of full rights to rotigotine from Aderis as of 2005. The drug was approved by the European Medicines Agency (EMA) for use in Europe in 2006. In 2007, the Neupro patch was approved by the US Food and Drug Administration (FDA). It became the first transdermal treatment of Parkinson's disease in the United States. In 2008, Schwarz Pharma recalled all Neupro patches in the United States and some in Europe because of problems with the delivery mechanism. FDA also suspended its marketing authorization after crystal formation was noted in some patches. The patch was reformulated, and was reintroduced in the United States in 2012. Rotigotine was authorized as a treatment for restless legs syndrome in the European Union in August 2008.

References

External links

Illustrations

Worked examples

Example 1 — a first encounter with Rotigotine

Start with the simplest possible case. Write down what Rotigotine claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Rotigotine before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Rotigotine ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Rotigotine

In research: Rotigotine appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Rotigotine in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Rotigotine is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2-Aminotetralins, 5-HT1A agonists, Adrenergic receptor modulators, so understanding it makes those chapters shorter.
In everyday life: Look for Rotigotine outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Rotigotine in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Rotigotine means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Rotigotine out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Rotigotine in simple terms?

Why does Rotigotine matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Rotigotine?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Rotigotine.