Pentoxifylline is a methylxanthine derivative approved by the U.S. Food and Drug Administration for the treatment of intermittent claudication. It can inhibit tumor necrosis factor alpha production, reducing plasma levels of this cytokine, which is thought to be a mediator in cancer-associated anorexia and cachexia (Goldberg et al., 1995). Pentoxifylline was evaluated in anorexia.
Jensen, S.B., Jarvis, V., Zadik, Y., Barasch, A., Ariyawardana, A., Hovan, A., . . . Mucositis Study Group of the Multinational Association of Supportive Care in Cancer/International Society of Oral Oncology (MASCC/ISOO). (2013). Systematic review of miscellaneous agents for the management of oral mucositis in cancer patients. Supportive Care in Cancer, 21(11), 3223–3232.
To analyze the available literature and define clinical practice guidelines for the use of the following agents for the prevention and treatment of oral mucositis (OM): allopurinol, midline mucosa-sparing radiation blocks, payayor, pentoxifylline, timing of radiation therapy (morning versus afternoon), pilocarpine, bethanechol, chewing gum, propantheline, and tetrachlorodecaoxide
A total of 99 references were retrieved. Of these, 18 were excluded based on the inclusion/exclusion criteria (which was not stated in the article). Of the remaining 81 papers, 49 pertained to agents of natural origin and the results on those agents were reported separately. This manuscript reported the results of the review of the remaining 32 papers that tested interventions that did not fit in any of the other categories and were classified as miscellaneous agents.
Studies were evaluated based on the list of major and minor flaws published by Hadorn. Level of evidence was assigned for each intervention based on the Somerfield criteria. A well-designed study was defined as a study with no major flaws per the Hadorn criteria. Findings from the reviewed studies were integrated into guidelines based on the overall level of evidence for each intervention.
PHASE OF CARE: Active treatment
Suggestions were made against the use of systemic pilocarpine administered orally for prevention of OM during RT in patients with head and neck cancer and in patients receiving high-dose chemotherapy with or without total body irradiation, prior to hematopoietic stem cell transplantation as well as against the use of systemic pentoxifylline administered orally for the prevention of OM in patients undergoing bone marrow transplantation. No guideline was possible for any other agent reviewed because of inadequate or conflicting evidence.
None of the agents reviewed was determined to be effective for the prevention or treatment of OM. This review was inadequate and difficult for the reader to understand. The methods section was missing needed information to assess the interventions and the associated recommendations.
Many products on the market claim to prevent or treat OM. Nurses need to be well informed before recommending any products or interventions to patients. Further research is needed.