Publications by authors named "Cecile Brun"

Objectives: Nontuberculous mycobacteria (NTM) bone and joint infections (BJIs) are uncommon. We evaluated the characteristics of BJIs and identified differences according to immune status.

Methods: We performed a multicenter retrospective study in France involving patients with documented NTM BJI over a 9-year period.

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  • - The French Society of Microbiology changed the temocillin susceptibility breakpoint from 20 mm to 17 mm, aligning with EU guidelines, prompting an evaluation of its impact on Enterobacterales categorization.
  • - A study of 36,416 isolates showed that the new 17 mm breakpoint significantly decreased the resistance rate to temocillin from 11.3% to 4.7%, indicating broader susceptibility among tested bacteria.
  • - The findings suggest that the updated breakpoint improves treatment options, particularly for resistant strains like Extended-spectrum beta-lactamase-producing Enterobacterales (ESBL-PE), while measurement biases may arise due to temocillin's stability against resistance.
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During atherosclerotic plaque formation, smooth muscle cells (SMCs) switch from a contractile/differentiated to a synthetic/dedifferentiated phenotype. We previously isolated differentiated spindle-shaped (S) and dedifferentiated rhomboid (R) SMCs from porcine coronary artery. R-SMCs express S100A4, a calcium-binding protein.

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Objectives: Extrapulmonary tuberculosis (EPTB) can be difficult to diagnose, especially in severe forms. The Xpert MTB/RIF Ultra test introduced an additional category called trace to reference very small amounts of complex (MTBC) DNA. The objective of our multicenter study was to evaluate whether the trace result on an extrapulmonary (EP) sample is a sufficient argument to consider diagnosing tuberculosis and starting treatment, even in severe cases.

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Objectives: Ceftolozane-tazobactam (C/T) proved its efficacy for the treatment of infections caused by non-carbapenemase producing Pseudomonas aeruginosa and Enterobacterales. Here, we aimed to provide susceptibility data on a large series of Enterobacterales since the revision of EUCAST categorization breakpoints in 2020.

Methods: First, C/T susceptibility was determined on characterized Enterobacterales resistant to third generation cephalosporins (3GCs) (extended spectrum β-lactamase [ESBL] production or different levels of AmpC overexpression) (n = 213) and carbapenem-resistant Enterobacterales (CRE) (n = 259), including 170 carbapenemase producers (CPE).

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In a retrospective study, we used sequencing to investigate Trichomonas vaginalis-positive specimens (genital, rectal and pharyngeal) with the Allplex™ STI Essential or the Anyplex™-II-STI-7 assays. Our results confirm that majority of T. vaginalis-positive genital and pharyngeal specimens contained T.

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Background: The original dataset presented here is the result of the first near-exhaustive analysis performed on historical data concerning ten plant species introduced in and around Occitania (south-western France) since 1651. Research was carried out on the following species: , , , , , , , , and .The data file contains 199 occurrence data exclusively based on historical observations and records made between 1651 and 2004 that were retrieved from 111 of the 640 literary sources consulted.

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Unlabelled: Although Candida spp are aerobic microorganisms, some Candida strains, mainly Candida glabrata, can be recovered from anaerobic blood culture vials. We assessed the contribution of the anaerobic vials for the diagnosis of candidemia, especially for C. glabrata.

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Article Synopsis
  • Lots of bacteria called Enterobacterales are becoming harder to treat because they resist medicine that usually works on them, especially for urinary tract infections (UTIs).
  • Scientists studied samples from 2017 to 2018 in France to see how many of these bacteria were resistant to different antibiotics.
  • They found that while some medicines had high resistance rates, others, like fosfomycin and nitrofurantoin, still worked well against most strains, even the resistant ones.
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Zoonotic species of Capnocytophaga genus belong to the oral microbiota of dogs and cats. They may be responsible for serious human infections, mainly after animal bites, with a high mortality rate. In France, only few cases have been reported and no multicenter study has been conducted.

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Tularemia, caused by the bacterium is an infrequent zoonotic infection, well known in immunocompetent (but poorly described in immunocompromised) patients. Although there is no clear literature data about the specific characteristics of this disease in immunocompromised patients, clinical reports seem to describe a different presentation of tularemia in these patients. Moreover, atypical clinical presentations added to the fastidiousness of pathogen identification seem to be responsible for a delayed diagnosis, leading to a" loss of chance" for immunocompromised patients.

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  • A study conducted across 12 hospitals in France found that 26.9% of Proteus mirabilis bacteria resistant to amoxicillin-clavulanate produced the enzyme OXA-23.
  • Researchers identified that a measurement of less than 11 mm in the inhibition zone around an amoxicillin-clavulanate disc effectively indicated the presence of OXA-23-producing bacteria.
  • Whole-genome sequencing showed that all OXA-23 producers belonged to the same lineage known for spreading OXA-23 or OXA-58 in P. mirabilis.
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Background: Ureaplasma parvum is usually part of the normal genital flora. Rarely can it cause invasive infections such as genitourinary infections, septic arthritis, or meningitis.

Case Presentation: Here we present the first description of chronic ureterocystitis in a 56-year-old immunocompromised patient, complicated first by reactive arthritis and secondarily by contralateral septic arthritis due to U.

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Mycoplasma genitalium is an emerging agent of sexually transmitted infections, associated with urethritis, cervicitis, and pelvic inflammatory disease. Over the past decade, a remarkable increase in macrolide-resistant M. genitalium, the first-line treatment, is observed all over the world.

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  • - Temocillin, used in some European countries for years, was introduced in France in 2015, and a study evaluated its effectiveness against Enterobacterales strains from blood cultures across three years: 2014, 2015, and 2017.
  • - Among the 1,387 strains analyzed, the overall resistance rate to temocillin increased from 13.9% in 2014 to 23.9% in 2017, with higher resistance in cephalosporinase-overproducer strains compared to ESBL-producer strains.
  • - Despite the rising trend in resistance, temocillin remains effective against Enterobacterales, suggesting the need for ongoing monitoring of resistance patterns over time.
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In the present study, we assessed a recently-marketed molecular test, the S-DiaMGTV™ kit (Diagenode), which provides simultaneous detection of Mycoplasma genitalium and Trichomonas vaginalis in urogenital samples. Performance characteristics of the S-DiaMGTV™ kit were compared to an in-house PCR for detection of M. genitalium and, for first time, with direct observation of genital secretions in wet mounting microscopy for T.

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(1) Background: Leptospirosis infection can lead to multiple organ failure, requiring hospitalization in an intensive care unit for supportive care, along with initiation of an adapted antibiotic therapy. Achieving a quick diagnosis is decisive in the management of these patients. (2) Methods: We present here a review of leptospirosis cases diagnosed in the intensive care unit of our hospital over seven years.

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Of 69 clinical isolates of Finegoldia magna tested, 36% presented high-level MICs of erythromycin (>256 μg/ml), harboring erm(A) (n = 20) or erm(B) (n=5). Of nine isolates exhibiting an inducible resistance phenotype to macrolides-lincosamides-streptogramins B, four (44%) were susceptible with a potential risk of treatment failure due to emergence of resistant mutants.

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Primary fungal infection of the central nervous system (CNS) is rare but often associated with severe prognosis. Diagnosis is complicated since cerebrospinal fluid (CSF) samples obtained from lumbar puncture usually remain sterile. Testing for fungal antigens in CSF could be a complementary diagnostic tool.

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Background: Tularemia is a rare zoonotic infection caused by bacterium Francisella tularensis. It has been well described in immunocompetent patients but poorly described in immunocompromised patients notably in solid organ transplant recipients.

Case Presentations: We report here two cases of tularemia in solid organ transplant recipients including first case after heart transplant.

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We report a disseminated infection caused by Spiroplasma apis, a honeybee pathogen, in a patient in France who had X-linked agammaglobulinemia. Identification was challenging because initial bacterial cultures and direct examination by Gram staining were negative. Unexplained sepsis in patients with agammaglobulinemia warrants specific investigation to identify fastidious bacteria such as Spiroplasma spp.

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Background: PCR-based techniques for the diagnosis of community- acquired severe lower respiratory tract infections are becoming the standard of care. However, their relative ability to identify either atypical bacteria or viruses that cause LRTI from clinical samples from various sources is yet to be determined.

Objectives And Study Design: The aim of our study was to compare the diagnostic yield of nasopharyngeal aspirates with that of pulmonary samples for the etiological diagnosis of severe acute lower respiratory tract infections by multiplex PCR.

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The patient is a 36 year old female who presented breast cancer with leptomeningeal involvement. A systematic lumbar puncture was performed and sent to the laboratory for CSF analysis. CSF examination using wet mount preparation showed a large number of round spherules.

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Article Synopsis
  • Clostridium difficile infection (CDI) is a significant cause of diarrhea in hospitals, but it can also occur in the general community, potentially leading to severe health outcomes.
  • A study of 136 patients at a French hospital revealed that most CDI cases were healthcare-acquired, but community-acquired cases had a higher severity index.
  • The findings suggest that CDI can be serious even in the community, highlighting the need for further research on people without known risk factors for the infection.
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