Evidence map›Paper›PMID 35203827›Full record

ArticleAntibiotics (Basel, Switzerland)2022

High Activity of N-Acetylcysteine in Combination with Beta-Lactams against Carbapenem-Resistant

Massimiliano De Angelis, Maria T Mascellino, Maria C Miele, Dania Al Ismail, Marisa Colone, Annarita Stringaro, Vincenzo Vullo, Mario Venditti, Claudio M Mastroianni, Alessandra Oliva

Abstract read
In one paragraph

Article in Antibiotics (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed.

  1. Life (Basel, Switzerland) · 2026
    Review
  2. Review
  3. Article
  4. Treating Extensively Drug-ResistantPathogens (Basel, Switzerland) · 2026
    Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Frontiers in veterinary science · 2025
    Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Frontiers in microbiology · 2023
    Review
  16. Article
  17. Conjugation of Ctx(IleACS omega · 2022
    Article
  18. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Massimiliano De AngelisDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy.
Maria T MascellinoDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy.ORCID 0000-0001-7684-3088
Maria C MieleDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy.ORCID 0000-0003-2833-2480
Dania Al IsmailDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy.ORCID 0000-0002-6277-5464
Marisa ColoneNational Center for Drug Research and Evaluation, Italian National Institute of Health, 00161 Rome, Italy.ORCID 0000-0002-7522-7483
Annarita StringaroNational Center for Drug Research and Evaluation, Italian National Institute of Health, 00161 Rome, Italy.ORCID 0000-0002-0143-2978
Vincenzo VulloDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy.
Mario VendittiDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy.ORCID 0000-0003-2639-0281
Claudio M MastroianniDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy.ORCID 0000-0002-1286-467X
Alessandra OlivaDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy.ORCID 0000-0003-0832-7975

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimThe aim of the study was to evaluate the in vitro activity of N-acetylcysteine (NAC), alone or in combination with beta-lactams, against carbapenem-resistant

methodsThe antibacterial activity of each compound was tested by broth microdilution and the synergism was evaluated by the checkerboard method. Killing studies of NAC alone and in combination with beta-lactams were performed. Bacterial morphological changes were investigated with scanning electron microscopy (SEM).

resultsOverall, 30 strains were included (15 CR-Kp and 15 CR-Ab). The NAC Minimal Inhibitory Concentrations (MIC)50/90 were 5/5 and 2.5/5 mg/mL for CR-Kp and CR-Ab, respectively. For both microorganisms, NAC, in addition to beta-lactams (meropenem for CR-Kp, meropenem and ampicillin/sulbactam for CR-Ab, respectively), was able to enhance their activity. The killing studies showed a rapid and concentration-dependent activity of NAC alone; the addition of NAC to meropenem or ampicillin/sulbactam at subinhibitory concentrations induced a fast and lasting bactericidal activity that persisted over time. The SEM analyses showed evident morphological alterations of the bacterial cells following incubation with NAC, alone and in combination with meropenem.

conclusionsNAC demonstrated a high in vitro activity against CR-Kp and CR-Ab and was able to enhance beta-lactams' susceptibility in the tested strains. The preliminary data on the SEM analyses confirmed the in vitro results.

Indexed as

carbapenem-resistant Acinetobacter baumanniicarbapenem-resistant Klebsiella pneumoniaemultidrug resistanceN-acetylcysteinesynergism

Identifiers

PMID35203827
PMCPMC8868344

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.