science

Nicergoline

Nicergoline is a science 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 Nicergoline rather than just read about it. In short: Nicergoline, sold under the brand name Sermion among others, is an ergot derivative used to treat senile dementia and other disorders with vascular origins. Internationally it has been used for frontotemporal dementia as well as early onset in Lewy body dementia and Parkinson's dementia.

Key takeaways

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

Reference excerpt

Nicergoline, sold under the brand name Sermion among others, is an ergot derivative used to treat senile dementia and other disorders with vascular origins. Internationally it has been used for frontotemporal dementia as well as early onset in Lewy body dementia and Parkinson's dementia. It decreases vascular resistance and increases arterial blood flow in the brain, improving the utilization of oxygen and glucose by brain cells. It has similar vasoactive properties in other areas of the body, particularly the lungs. Unlike many other ergolines, such as ergotamine, nicergoline is not associated with cardiac fibrosis. It is used for vascular disorders such as cerebral thrombosis and atherosclerosis, arterial blockages in the limbs, Raynaud's disease, vascular migraines, and retinopathy. Nicergoline has been registered in over fifty countries and has been used for more than three decades for the treatment of cognitive, affective, and behavioral disorders of older people.

Medical uses Nicergoline is used in the following cases:

Acute and chronic cerebral metabolic-vascular disorders (cerebral arteriosclerosis, thrombosis and cerebral embolism, transitory cerebral ischaemia). Acute and chronic peripheral metabolic-vascular disorders (organic and functional arteriopathies of the limbs), Raynaud's disease and other syndromes caused by altered peripheral irrigation. Migraines of vascular origin Coadjutant therapy in clinical situations accompanied by platelet hyper-aggregability, arterial tension. Corio-retinal vascular disorders: diabetic retinopathy, macular degeneration and retinal angiosclerosis Oto-vestibular problems of a vascular nature: dizziness, auditory hallucinations, hypoacusis. Dosages for known conditions are usually administered at 5–10 mg three times a day, however anti-aging preventative purposes may want to consider 5 mg once or twice a day more adequate.

Contraindications Persons suffering from acute bleeding, myocardial infarction (heart conditions), hypertension, bradycardia or using alpha or beta receptor agonists should consult with their physician before use. Although toxicology studies have not shown nicergoline to have any teratogenic effect, the use of this medicine during pregnancy should be limited to those cases where it is absolutely necessary. On 28 June 2013, the European Medicines Agency recommended restricting the use of medicines containing ergot derivatives, including nicergoline. They stated that "these medicines should no longer be used to treat several conditions involving blood circulation problems or problems with memory and sensation, or to prevent migraine headaches, since the risks are greater than the benefits in these indications. This is based on a review of data showing an increased risk of fibrosis (formation of excess connective tissue that can damage organs and body structures) and ergotism (symptoms of ergot poisoning, such as spasms and obstructed blood circulation) with these medicines." However, only a subset of ergolines are associated with fibrosis and evidence suggests that nicergoline does not carry the same fibrotic risk like other ergoline derivatives such as ergotamine. Nicergoline is considered unsafe in porphyria.

Side effects The side effects of nicergoline are usually limited to nausea, hot flushes, mild gastric upset, hypotension and dizziness. At high drug dosages, bradycardia, increased appetite, agitation, diarrhea and perspiration were reported. Most of the available literature suggests that the side effects of nicergoline are mild and transient.

Interactions Nicergoline is known to enhance the cardiac depressive effects of propranolol. At high dosages, it is advisable to seek one's physician's guidance if combining with potent vasodilators such as bromocriptine, Ginkgo biloba, picamilon, vinpocetine or xantinol nicotinate.

Pharmacology

Pharmacodynamics

Nicergoline is an ergot alkaloid derivative that acts as a potent and selective α1A-adrenergic receptor antagonist. The IC50 of nicergoline in vitro has been reported to be 0.2 nM. The primary action of nicergoline is to increase arterial blood flow by vasodilation. Furthermore, it is known that nicergoline inhibits platelet aggregation. Studies have shown that nicergoline also increases nerve growth factor in the aged brain. In addition to the α1A-adrenergic receptor, nicergoline is an antagonist of the serotonin 5-HT1A receptor (IC50 = 6 nM) and shows moderate affinity for serotonin 5-HT2 and α2-adrenergic receptors and low affinity for the dopamine D1 and D2 and muscarinic acetylcholine M1 and M2 receptors.

Pharmacokinetics The major metabolites of nicergoline include MMDL and MDL. These metabolites show low or no affinity for adrenergic, serotonin, dopamine, or acetylcholine receptors.

Society and culture

Generic names Nicergoline is the generic name of the drug and its INNTooltip International Nonproprietary Name, USANTooltip United States Adopted Name, BANTooltip British Approved Name, and DCFTooltip Dénomination Commune Française.

Brand names In some countries, Sermion is marketed by Viatris after Upjohn was spun off from Pfizer.

Illustrations

Worked examples

Example 1 — a first encounter with Nicergoline

Start with the simplest possible case. Write down what Nicergoline claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Nicergoline 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 Nicergoline 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 Nicergoline

In research: Nicergoline appears in science 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 Nicergoline 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: Nicergoline is common in secondary-school and first-year university syllabi. It links to neighbouring topics 5-HT1A antagonists, Alpha-1 blockers, Antidementia agents, so understanding it makes those chapters shorter.
In everyday life: Look for Nicergoline 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 Nicergoline in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Nicergoline 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 Nicergoline out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Nicergoline in simple terms?

Why does Nicergoline matter?

Because it connects several science 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 Nicergoline?

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 Nicergoline.