The Use of Systemic and Topical Fluoroquinolones Mary Anne Jackson, MD, FAAP, Gordon E
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CLINICAL REPORT Guidance for the Clinician in Rendering Pediatric Care The Use of Systemic and Topical Fluoroquinolones Mary Anne Jackson, MD, FAAP, Gordon E. Schutze, MD, FAAP, COMMITTEE ON INFECTIOUS DISEASES Appropriate prescribing practices for fl uoroquinolones, as well as all abstract antimicrobial agents, are essential as evolving resistance patterns are considered, additional treatment indications are identifi ed, and the toxicity profi le of fl uoroquinolones in children has become better defi ned. Earlier recommendations for systemic therapy remain; expanded uses of fl uoroquinolones for the treatment of certain infections are outlined in this report. Prescribing clinicians should be aware of specifi c adverse reactions This document is copyrighted and is property of the American associated with fl uoroquinolones, and their use in children should continue Academy of Pediatrics and its Board of Directors. All authors have fi led confl ict of interest statements with the American Academy to be limited to the treatment of infections for which no safe and effective of Pediatrics. Any confl icts have been resolved through a process approved by the Board of Directors. The American Academy of alternative exists or in situations in which oral fl uoroquinolone treatment Pediatrics has neither solicited nor accepted any commercial represents a reasonable alternative to parenteral antimicrobial therapy. involvement in the development of the content of this publication. Clinical reports from the American Academy of Pediatrics benefi t from expertise and resources of liaisons and internal (AAP) and external reviewers. However, clinical reports from the American Academy of Pediatrics may not refl ect the views of the liaisons or the organizations OVERVIEW or government agencies that they represent. The guidance in this report does not indicate an exclusive course of Fluoroquinolones are highly active in vitro against both Gram-positive treatment or serve as a standard of medical care. Variations, taking and Gram-negative pathogens, with pharmacokinetic properties that are into account individual circumstances, may be appropriate. favorable for treating a wide array of infections. The prototype quinolone All clinical reports from the American Academy of Pediatrics automatically expire 5 years after publication unless reaffi rmed, antibiotic agent, nalidixic acid, was first approved by the US Food and revised, or retired at or before that time. Drug Administration (FDA) for adults in 1964 and generally is considered to be the first generation of such agents. For more than 2 decades, DOI: 10.1542/peds.2016-2706 nalidixic acid represented the prototypic fluoroquinolone approved by PEDIATRICS (ISSN Numbers: Print, 0031-4005; Online, 1098-4275). the FDA and was available for children 3 months and older, but it is no Copyright © 2016 by the American Academy of Pediatrics longer available. Subsequent chemical modifications resulted in a series FINANCIAL DISCLOSURE: The authors have indicated they of fluoroquinolone agents with an increased antimicrobial spectrum of have no fi nancial relationships relevant to this article to activity and better pharmacokinetic characteristics. disclose. Ciprofloxacin, norfloxacin, and ofloxacin have a greater Gram-negative FUNDING: No external funding. spectrum (with activity against Pseudomonas aeruginosa). In 2004, POTENTIAL CONFLICT OF INTEREST: The authors have ciprofloxacin became the first fluoroquinolone agent approved for use in indicated they have no potential confl icts of interest to children 1 through 17 years of age. disclose. Levofloxacin is often referred to as a respiratory fluoroquinolone because it has increased activity against many of the respiratory pathogens, To cite: Jackson MA, Schutze GE, AAP COMMITTEE ON such as Streptococcus pneumoniae, Mycoplasma pneumoniae, and INFECTIOUS DISEASES. The Use of Systemic and Topical Fluoroquinolones. Pediatrics. 2016;138(5):e20162706 Chlamydophila pneumoniae, while retaining activity against many of the Downloaded from www.aappublications.org/news by guest on September 27, 2021 PEDIATRICS Volume 138 , number 5 , November 2016 :e 20162706 FROM THE AMERICAN ACADEMY OF PEDIATRICS Gram-negative pathogens. A fourth- inhalational anthrax and plague. of arthrotoxicity was observed during generation agent, moxifloxacin, A randomized, prospective, a 14-day treatment course at 90 mg/kg displays increased activity against double-blind multicenter study per day but not at 30 mg/kg per anaerobes while maintaining Gram- of moxifloxacin for complicated day. 8, 9 Apparent joint tenderness at positive and Gram-negative activity intraabdominal infection in the higher exposure resolved 6 weeks and also has excellent activity children, in which patients were after the last dose of ciprofloxacin. against Mycobacterium tuberculosis; randomly assigned to receive either Histopathologic evidence of cartilage however, there are limited safety and moxifloxacin plus comparator drug injury was noted in virtually all dosing data available in children. placebo or comparator drug plus animals given 90 mg/kg per day Animal toxicology data available moxifloxacin placebo, was completed of ciprofloxacin. At this exposure with the first quinolone compounds in July 2015, but no data are available level, the observed clinical signs all revealed their propensity to create at this time. Systemic quinolones occurred during and shortly after inflammation and subsequent licensed in the United States will be treatment but resolved by 2 months destruction of weight-bearing discussed in this report. In addition, after cessation, with no recurrent joints in canine puppies. 1, 2 This this review will contain no discussion signs noted during the 5-month observation effectively sidelined of the use of fluoroquinolones in follow-up period. Histopathologic further development or large-scale infants younger than 6 months. evidence of cartilage injury was also evaluation of this class of antibiotic observed at 30 mg/kg per day, the agents in children at that time. dose currently recommended for SAFETY children, and inflammation occurred A policy statement summarizing the in fewer than half the animals at this assessment of risks and benefits of Animal Models dose but persisted for 5 months after fluoroquinolones in pediatric patients The original toxicology studies with treatment, at full skeletal maturation. was published by the American quinolones documented cartilage The “no observed adverse event Academy of Pediatrics (AAP) in injury in weight-bearing joints in level” (NOAEL) was 10 mg/kg per 2006, and earlier recommendations canine puppies, with damage to day, a dose at which neither clinical remain, with updates as appropriate the joint cartilage proportional nor histopathologic evidence of 3 covered in this document. The to the degree of exposure. 1, 2 Each toxicity was present, but a dose too statement indicated that the quinolone has a different potential to low for therapeutic benefit. parenteral fluoroquinolones were cause cartilage toxicity, 5 but given a appropriate for the treatment of sufficiently high exposure, cartilage Similar data were developed before infections caused by multidrug- changes will occur in all animal FDA approval of levofloxacin for resistant pathogens for which models with all quinolones. adults, documenting a NOAEL at no alternative safe and effective 3 mg/kg per day for IV dosing for Although initial reports focused parenteral agent existed. However, 14 days (approximately one-quarter on articular cartilage, subsequent for outpatient management, oral the current FDA-approved dose of studies suggested the possibility of fluoroquinolones were only indicated 16 mg/kg per day for children who epiphyseal plate cartilage injury, 6 when other options were intravenous weigh less than 50 kg). Levofloxacin leading to fluoroquinolone clinical (IV) treatment with other classes has virtually 100% bioavailability, study designs lasting several years to of antibiotic agents. In 2011, the with total drug exposure being assess growth potential. Data suggest AAP published an updated clinical equivalent between IV and oral that quinolone toxicity occurs as a report because of the increased formulations at the same milligram result of concentrations present in ophthalmologic and topical use of per kilogram dose. 10 fluoroquinolones as well as data cartilage that are sufficiently high to form chelate complexes with divalent on lack of toxicity when used in Data from a lamb model, with 4 cations, particularly magnesium, children. growth rates and activity more resulting in the impairment of Quinolones that are currently closely mirroring humans than integrin function and cartilage matrix approved for pediatric patients by juvenile beagle dogs or rats, have integrity in the weight-bearing joints, the FDA and available in an IV and been reported. Gross examination of which undergo chronic trauma oral suspension formulation are articular cartilage and microscopic during routine use. 7 ciprofloxacin for the indications examination of epiphyseal cartilage of inhalational anthrax, plague, In studies of ciprofloxacin exposure did not reveal abnormalities complicated urinary tract infections to very young beagle puppies (one of consistent with cartilage injury or (UTIs), and pyelonephritis and the most sensitive animal models for inflammation after a 14-day drug levofloxacin for the indications of quinolone toxicity), clinical evidence exposure to either gatifloxacin or Downloaded from www.aappublications.org/news