alexa Colitis Due to Campylobacter jejuni/coli: Ceftriaxone is Not Effective | Open Access Journals
ISSN: 2167-7182
Journal of Gerontology & Geriatric Research
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Colitis Due to Campylobacter jejuni/coli: Ceftriaxone is Not Effective

Stephane Emonet1*, Betim Redzepi1, Arnaud Riat2, Abdessalam Cherkaoui2, Benjamin A Lipsky1, Frederic Ris3 and Jacques Schrenzel1,2

1Service of Infectious Diseases, Department of Internal Medicine, Geneva University Hospitals, Switzerland

2Bacteriology laboratory, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland

3Service of Visceral Surgery, Department of Surgery, Geneva University Hospitals, Switzerland

*Corresponding Author:
Stephane Emonet
Service of Infectious Diseases, Department of Medical Specialties
Geneva University Hospitals, Gabrielle-Perret-Gentil 4
CH-1211 Geneva 14, Switzerland
Tel: +41022 3727323
Fax: +410223727312
E-mail: stephane.emonet@hcuge.ch

Received Date: May 08, 2017; Accepted Date: May 17, 2017; Published Date: May 20, 2017

Citation: Emonet S, Redzepi B, Riat A, Cherkaoui A, Lipsky BA, et al. (2017) Colitis Due to Campylobacter jejuni/coli: Ceftriaxone is Not Effective. J Gerontol Geriatr Res 6:426. doi: 10.4172/2167-7182.1000426

Copyright: © 2017 Emonet S, et al. This is an open-access article distributed under the terms of the creative commons attribution license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Abstract

Background: Ceftriaxone is often prescribed empirically for patients hospitalized with abdominal pain and fever. If stools culture from such a patient yields Campylobacter jejuni or Campylobacter coli (C. jejuni/coli), clinicians ask about its susceptibility to ceftriaxone, to which it is not routinely tested. We report a case of colitis that raised this question. As we couldn’t find the answer in the published literature, we investigated the sensitivity of strains of C. jejuni/coli to ceftriaxone in our hospital.

Methods: We conducted a retrospective study of all strains of C. jejuni and C. coli isolated from specimens of infected patients seen in our tertiary care university-affiliated hospital in Switzerland between March 2009 and December 2010. Campylobacter strains were identified to the species level with matrix-assisted laser desorption ionization - time of flight (MALDI-TOF) mass spectrometry and antimicrobial susceptibilities were determined by Etest.

Results: Among 108˚C. jejuni and 14˚C. coli isolates, only 1.6% were fully susceptible to ceftriaxone. Overall, 95.9% of our strains were susceptible to erythromycin but 52.5% of C. jejuni/coli were resistant to ciprofloxacin.

Conclusion: Our results suggest that ceftriaxone should be considered ineffective for the treatment of Campylobacter jejuni/coli infections, the major cause of gastro-enteritis in Europe. In the light of increasing resistance to fluoroquinolones, cases of severe Campylobacter colitis or bacteraemia may require a short course of macrolides.

Keywords

Campylobacter ; Ceftriaxone; Antibiotic resistance; Abdominal pain; Gastroenteritis

Abbreviations

C. jejuni : Campylobacter jejuni ; C. coli : Campylobacter coli ; MALDI-TOF: Matrix-Assisted Laser Desorption Ionization - Time of Flight; HUG: Hospitals of the University of Geneva; CLSI: Clinical and Laboratory Standards Institute; MIC: Minimal Inhibitory Concentration; EUCAST: European Committee on Antimicrobial Susceptibility Testing

Background

A 25-year-old woman presented to our emergency department with abdominal pain, nausea and fever. She had previously been in good health and did not take any medication. A low- dose computed tomography scan of the abdomen (Figure 1) showed inflammation of the caecum and terminal ileum, making analysis of the appendix difficult. The patient was admitted to the visceral (general) surgery service for surveillance and was started on therapy with intravenous ceftriaxone and metronidazole. Her clinical condition improved, but blood cultures were positive for a Campylobacter coli after 48 hours. The attending surgeon contacted the infectious diseases specialist to ask if this pathogen was likely to be susceptible to ceftriaxone. Research of medical literature on human infection with Campylobacter jejuni or coli revealed a striking lack of data on this issue. Because our patient’s Campylobacter coli isolate was resistant to both ceftriaxone and ciprofloxacin, she was treated 5 days with oral azithromycin for her bacteremia and discharged from the hospital.

gerontology-geriatric-research-low-dose

Figure 1: Image from the low-dose abdominal computed tomography scan showing inflammation of the caecum and terminal ileum.

Campylobacter species (spp) are the most common cause of bacterial gastroenteritis in industrialized countries [1]. Infections due to C. jenuni //coli are usually well tolerated and self-limited in immunocompetent patients. However, hospitalization is sometimes required because of severe colitis, profuse diarrhea with kidney failure or bacteremia [2]. There are few published data on the susceptibility of C. jejuni/coli to ceftriaxone. Animal studies have described a high rate of resistance of Campylobacter spp to ceftriaxone [3,4]. A few human studies from Israel and Asia [5-8] have reported resistance to ceftriaxone, but we found no human cases reported from Europe (Figure 2).

gerontology-geriatric-research-mean-inhibitory

Figure 2: Distribution of mean inhibitory concentrations (MIC, in μg/ml) to ceftriaxone for 122 Campylobacter jejuni/coli isolates.

The Hospital of the University of Geneva (HUG) is the largest hospital in Switzerland, with 1900 beds. It serves as a secondary care center for the population of Geneva and as a tertiary care referral center for western Switzerland. To seek further information on the susceptibility of C. jejuni/coli to ceftriaxone in our setting, we performed a retrospective study on all of the isolates of C. jejuni and C. coli isolated in our hospital over almost 2 years.

Methods

During the 22 months, we isolated 122 strains, 108 of C. jejuni and 14 of C. coli on Karmali agar. Campylobacter strains were identified to the species level with MALDI-TOF mass spectrometry. Antimicrobial susceptibility testing was performed on Mueller-Hinton agar (+5% sheep blood) incubated at 37°C in a microaerobic atmosphere, as described in the Clinical and Laboratory Standards Institute (CLSI) guidelines supplement for fastidious bacteria (M45-A2, Second edition, August 2010). E-tests were used to determine the minimal inhibitory concentration (MIC) for ciprofloxacin, ceftriaxone and erythromycin [9-12]. Erythromycin and ciprofloxacin MIC’s were interpreted according to CLSI cut-off values. Neither CLSI nor the European Committee on Antimicrobial Susceptibility Testing (EUCAST) has determined susceptibility breakpoints for ceftriaxone against C. jejuni . We found only two studies that defined the susceptibility breakpoint for ceftriaxone for species of Campylobacter : one [3] considered a MIC ≤ 8 μg/ml as susceptible, while the other [7] used ≤ 2 μg. Thus, we elected to consider strains with a MIC ≤ 2 μg/ml to ceftriaxone as fully susceptible, those with 3-6 μg/ml as intermediate and those with ≥ 8 μg/ml as resistant.

Results and Discussion

Among our C. jejuni/coli isolates, 8/122 (6.6%) were isolated in blood, the rest in stools. Only 2/122 (1.6%) were fully susceptible to ceftriaxone (see supplementary material for MIC values for all antibiotics and all strains). As shown in Figure 2, more than 2/3 of the isolates had a MIC for ceftriaxone in the resistant range. Nearly all of our C. jejuni/coli strains (117/122; 95.9%) were susceptible to erythromycin, but, as described elsewhere [13-15], more than fifty percent (64/122; 52.5%) were resistant to ciprofloxacin.

This small retrospective study confirms the distressingly high resistance rate of human Campylobacter isolates to ciprofloxacin, an agent often used to treat this infection. The rate of resistance has been growing in the last decade [14], leading to restrictions on the use of fluoroquinolones in veterinary medicine [16].

Conclusion

Our study highlights the high level of resistance to ceftriaxone of Campylobacter spp causing human infections in a European setting. Based on our data, and the few published studies, patients treated empirically with ceftriaxone should benefit from a switch to macrolides when C. jejuni/coli are identified as the cause of the infection, especially if they have an invasive or non-resolving infection.

Declarations

Ethics approval and consent to participate

No collection of clinical data for this study. For this type of study, formal consent is not required. Consent for publication Was not searched for as the case description does not contain any picture or specific information that could lead to the identification of the patient.

Availability of data and material

Please refer to “Supplementary Material’’ where you’ll find the complete Excel table with all the data on which the conclusions of our manuscript rely.

Authors' contributions

SE was the ID specialist implicated in the clinical case. He conceived the study, performed the statistical and clinical analysis and drafted the manuscript. BR and BL participated to the analysis of the data and to the redaction of the manuscript. AR, AC and JS contributed to the acquisition of the data and laboratory analysis, and participated to the redaction of the manuscript. FR was the surgeon in charge of the patient and participated to the redaction of the manuscript. All authors read and approved the final manuscript.

Acknowledgement

We thank Nouria Azam for her help in performing antimicrobial susceptibility testing on these strains of Campylobacter spp.

References

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