chemistry

Ifosfamide

Ifosfamide 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 Ifosfamide rather than just read about it. In short: Ifosfamide, sold under the brand name Ifex among others, is a chemotherapy medication used to treat a number of types of cancer. This includes testicular cancer, soft tissue sarcoma, osteosarcoma, bladder cancer, small cell lung cancer, cervical cancer, and ovarian cancer.

Key takeaways

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

Reference excerpt

Ifosfamide, sold under the brand name Ifex among others, is a chemotherapy medication used to treat a number of types of cancer. This includes testicular cancer, soft tissue sarcoma, osteosarcoma, bladder cancer, small cell lung cancer, cervical cancer, and ovarian cancer. It is administered by injection into a vein. Common side effects include hair loss, vomiting, blood in the urine, infections, and kidney problems. Other severe side effects include bone marrow suppression and decreased level of consciousness. Use during pregnancy will likely result in harm to the baby. Ifosfamide is in the alkylating agent and nitrogen mustard family of medications. It works by disrupting the duplication of DNA and the creation of RNA. Ifosfamide was approved for medical use in the United States in 1987. It is on the World Health Organization's List of Essential Medicines.

Medical uses It is given as a treatment for a variety of cancers, including:

Testicular cancer Breast cancer Lymphoma (Hodgkin and non-Hodgkin) Soft tissue sarcoma Osteosarcoma or bone tumor Lung cancer Cervical cancer Ovarian cancer

Administration It is a white powder which, when prepared for use in chemotherapy, becomes a clear, colorless fluid. The delivery is intravenous. Ifosfamide is often used in conjunction with mesna to avoid internal bleeding in the patient, in particular hemorrhagic cystitis. Ifosfamide is given quickly, and in some cases can be given as quickly as an hour.

Mechanism of action Ifosfamide is a DNA-damaging alkylating agent, belonging to the same class of chemotherapy drugs as cyclophosphamide. It is a prodrug, meaning that It has to be converted by CYP450 into its main active metabolites-(Iso)phosphoramide mustards. These metabolites form DNA cross links mainly at Guanine N-7 positions.

Side effects Hemorrhagic cystitis is rare when ifosfamide is given with mesna. A common and dose-limiting side effect is encephalopathy (brain dysfunction). It occurs in some form in up to 50% of people receiving the agent. The reaction is probably mediated by chloroacetaldehyde, one of the breakdown products of the ifosfamide molecule, which has chemical properties similar to acetaldehyde and chloral hydrate. The symptoms of ifosfamide encephalopathy can range from mild (difficulty concentrating, fatigue), to moderate (delirium, psychosis), to severe (nonconvulsive status epilepticus or coma). In children, this can interfere with neurological development. Apart from the brain, ifosfamide can also affect peripheral nerves. The severity of the reaction can be classified according to either the National Cancer Institute or the Meanwell criteria (grade I–IV). Previous brain problems and low levels of albumin in the blood increase the likelihood of ifosfamide encephalopathy. In most cases, the reaction resolves spontaneously within 72 hours. If it develops during an infusion of the drug, discontinuing the infusion is advised. The most effective treatment for severe (grade III–IV) encephalopathy is an intravenous solution of methylene blue, which appears to shorten the duration of encephalopathy; the exact mechanism of action of methylene blue is unclear. In some cases, methylene blue may be used as a prophylaxis before further doses of ifosfamide are administered. Other treatments include albumin and thiamine, and dialysis as a rescue modality. Ifosfamide may also cause a normal anion gap acidosis, specifically renal tubular acidosis type 2.

References

Illustrations

Worked examples

Example 1 — a first encounter with Ifosfamide

Start with the simplest possible case. Write down what Ifosfamide 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 Ifosfamide 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 Ifosfamide 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 Ifosfamide

In research: Ifosfamide 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 Ifosfamide 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: Ifosfamide is common in secondary-school and first-year university syllabi. It links to neighbouring topics Chloroethyl compounds, Nitrogen mustards, Oxazaphosphinans, so understanding it makes those chapters shorter.
In everyday life: Look for Ifosfamide 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Ifosfamide in 20 minutes

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

Frequently asked questions

What is Ifosfamide in simple terms?

Why does Ifosfamide 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 Ifosfamide?

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 Ifosfamide.