Evaluation of methylene blue, thiamine, and/or albumin in the prevention of ifosfamide-related neurotoxicity.
Summary of "Evaluation of methylene blue, thiamine, and/or albumin in the prevention of ifosfamide-related neurotoxicity."
Summary. A serious adverse effect that can limit the utility of ifosfamide is neurotoxicity, known as ifosfamide-induced encephalopathy (IIE). Information regarding the usefulness of prophylactic administration of methylene blue, thiamine, and albumin to reduce the incidence of IIE is scarce. We present the results of a retrospective chart review evaluating the incidence of IIE in adult patients who received ifosfamide to treat sarcoma at the University of Washington within a 2-year period. Patients who received methylene blue, thiamine, and/or albumin were compared to patients who did not receive these prophylactic agents concurrently with ifosfamide. The primary objective was to evaluate if prophylaxis is associated with a reduced incidence of IIE. Identifying risk factors associated with IIE was a secondary objective. The cost of using prophylaxis with ifosfamide administration was reviewed.
RESULTS:
A total of 166 cycles were included. For the primary endpoint, more cycles in the prophylaxis group had patients with symptoms of IIE (21.1% in the prophylaxis group vs. 8.4% in the nonprophylaxis group); p = 0.026. The average number of risk factors per cycle was the same in each group; however, the type of risk factors differed.
CONCLUSIONS:
Prophylaxis was not associated with a reduced incidence of IIE, and it does not appear to delay time to onset of symptoms at our institution.
RESULT:
of this study provide no support for using methylene blue, thiamine, and/or albumin as routine prophylaxis when administering ifosfamide to adults with sarcoma.
Affiliation
University of Washington Medical Center/Seattle Cancer Care Alliance, Seattle, WA, USA.
Journal Details
This article was published in the following journal.
Name: Journal of oncology pharmacy practice : official publication of the International Society of Oncology Pharmacy Practitioners
ISSN: 1477-092X
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20861178
- DOI: http://dx.doi.org/10.1177/1078155210385159
Medical and Biotech [MESH] Definitions
Methylene Blue
A compound consisting of dark green crystals or crystalline powder, having a bronze-like luster. Solutions in water or alcohol have a deep blue color. Methylene blue is used as a bacteriologic stain and as an indicator. It inhibits GUANYLATE CYCLASE, and has been used to treat cyanide poisoning and to lower levels of METHEMOGLOBIN.
Hypoalbuminemia
A condition in which albumin level in blood (SERUM ALBUMIN) is below the normal range. Hypoalbuminemia may be due to decreased hepatic albumin synthesis, increased albumin catabolism, altered albumin distribution, or albumin loss through the urine (ALBUMINURIA).
Thiamine Pyrophosphatase
An enzyme that hydrolyzes thiamine pyrophosphate to thiamine monophosphate plus inorganic phosphate. EC 3.6.1.-.
Pyrithiamine
A thiamine antagonist due to its inhibition of thiamine pyrophosphorylation. It is used to produce thiamine deficiency.
Evans Blue
An azo dye used in blood volume and cardiac output measurement by the dye dilution method. It is very soluble, strongly bound to plasma albumin, and disappears very slowly.
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