Allergy Asthma Immunol Res.  2015 Sep;7(5):518-522. 10.4168/aair.2015.7.5.518.

Hypersensitivity Pneumonitis Caused by Cephalosporins With Identical R1 Side Chains

• Lee SH
• Kim MH
• Lee K
• Jo EJ
• Park HK

• KMID: 2147962
• DOI: http://doi.org/10.4168/aair.2015.7.5.518

Abstract

Drug-induced hypersensitivity pneumonitis results from interactions between pharmacologic agents and the human immune system. We describe a 54-year-old man with hypersensitivity pneumonitis caused by cephalosporins with identical R1 side chains. The patient, who complained of cough with sputum, was prescribed ceftriaxone and clarithromycin at a local clinic. The following day, he complained of dyspnea, and chest X-ray revealed worsening of inflammation. Upon admission to our hospital, antibiotics were changed to cefepime with levofloxacin, but his pneumonia appeared to progress. Changing antibiotics to meropenem with ciprofloxacin improved his symptoms and radiologic findings. Antibiotics were de-escalated to ceftazidime with levofloxacin, and his condition improved. During later treatment, he was mistakenly prescribed cefotaxime, which led to nausea, vomiting, dyspnea and fever, and indications of pneumonitis on chest X-ray. We performed bronchoalveolar lavage, and the findings included lymphocytosis (23%), eosinophilia (17%), and a low cluster of differentiation (CD) 4 to CD8 ratio (0.1), informing a diagnosis of drug-induced pneumonitis. After a medication change, his symptoms improved and he was discharged. One year later, he was hospitalized for acute respiratory distress syndrome following treatment with ceftriaxone and aminoglycosides for an upper respiratory tract infection. After steroid therapy, he recovered completely. In this patient, hypersensitivity reaction in the lungs was caused by ceftriaxone, cefotaxime, and cefepime, but not by ceftazidime, indicating that the patient's hypersensitivity pneumonitis was to the common R1 side chain of the cephalosporins.

Keyword

Adverse drug reactions; cephalosporins; hypersensitivity pneumonitis

MeSH Terms

Alveolitis, Extrinsic Allergic*
Aminoglycosides
Anti-Bacterial Agents
Bronchoalveolar Lavage
Cefotaxime
Ceftazidime
Ceftriaxone
Cephalosporins*
Ciprofloxacin
Clarithromycin
Cough
Diagnosis
Drug-Related Side Effects and Adverse Reactions
Dyspnea
Eosinophilia
Fever
Humans
Hypersensitivity
Immune System
Inflammation
Levofloxacin
Lung
Lymphocytosis
Middle Aged
Nausea
Pneumonia
Respiratory Distress Syndrome, Adult
Respiratory Tract Infections
Sputum
Thorax
Vomiting
Aminoglycosides
Anti-Bacterial Agents
Cefotaxime
Ceftazidime
Ceftriaxone
Cephalosporins
Ciprofloxacin
Clarithromycin

Figure

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  Fig. 1 Chest X-ray and CT scan prior to transfer (all taken at the local medical center). (A) Initial chest X-ray, (B) chest X-ray taken the following day, (C) initial chest CT, (D) chest CT taken the following day.

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  Fig. 2 Chest X-ray (A) after antibiotics change, and (B) after prescription of cefotaxime.

• 

  Fig. 3 Chest CT (A) at admission, and (B) the following day.

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  Fig. 4 Cephalosporin structure. (A) General structure of cephalosporins, (B) structure of ceftriaxone, (C) structure of cefotaxime, (D) structure of cefepime, (E) structure of ceftazidime (Red line is R1 side chain, and blue line is R2 side chain).

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