Publications by authors named "Mokaddas E"

Article Synopsis
  • Recent outbreaks of multidrug-resistant fungi in healthcare settings highlight the need for effective antifungal susceptibility testing (AST) to manage invasive infections.* -
  • The study compared the performance of Etest and broth microdilution-based MICRONAUT-AM-EUCAST assays by testing 121 clinical isolates, revealing significant discrepancies in fluconazole and amphotericin B resistance assessments.* -
  • Findings suggest that MCN-AM underestimates fluconazole resistance, while Etest overestimates amphotericin B resistance, indicating a need for method-specific resistance breakpoints to improve clinical outcomes.*
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Objective: Increasing reports of resistance to newer anti-tuberculosis drugs have prompted the search for other alternative drugs. Streptomycin could be used for the treatment of drug-resistant tuberculosis if susceptibility of Mycobacterium tuberculosis isolate to streptomycin could be accurately detected. We performed phenotypic and genotypic drug susceptibility testing (DST) of 118 M.

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Background: Multilocus sequence typing (MLST) is used to gain insight into the population genetics of bacteria in the form of sequence type (ST). MLST has been used to study the evolution and spread of virulent clones of in many parts of the world. Such data for are lacking for the countries of the Arabian Peninsula, including Kuwait.

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Candida auris is an emerging, multidrug-resistant yeast, causing outbreaks in healthcare facilities. Echinocandins are the antifungal drugs of choice to treat candidiasis, as they cause few side effects and resistance is rarely found. Previously, immunocompromised patients from Kuwait with C.

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Objectives: To report antimicrobial resistance data for Gram-positive and Gram-negative pathogens isolated from paediatric patients in three hospitals in Kuwait during 2012-19.

Methods: activity of antimicrobials against isolates from documented infections was determined using CLSI broth microdilution method and breakpoints at a central laboratory. Enterobacterales and isolates were screened for β-lactamases using multiplex PCR assays.

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Early detection of Mycobacterium tuberculosis (Mtb) in clinical specimens, its susceptibility to anti-TB drugs and disruption of infection transmission to new hosts are essential components for global tuberculosis (TB) control efforts. This study investigated major Mtb genotypes circulating in Kuwait and evaluated the performance of REBA MTB-MDR (REBA) test in comparison to GenoType MTBDRplus (gMTBDR+) assay for rapid detection of resistance of Mtb to isoniazid and rifampicin (MDR-TB). M.

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Background: The treatment options for infections caused by MDR Gram-negative bacteria have been limited, especially for infections caused by bacteria that produce carbapenemases and/or ESBLs. Ceftolozane/tazobactam is a cephalosporin/β-lactamase inhibitor developed to treat Gram-negative bacteria.

Methods: Ceftolozane/tazobactam and 14 comparators (amikacin, aztreonam, cefepime, cefotaxime, cefoxitin, ceftazidime, ceftriaxone, ciprofloxacin, colistin, ertapenem, imipenem, levofloxacin, meropenem and piperacillin/tazobactam) were evaluated against and Enterobacterales isolates collected from Kuwait and Oman (= 606) during 2016-17.

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Background: Candida auris is an emerging, potentially multidrug-resistant pathogen that exhibits clade-specific resistance to fluconazole and also develops resistance to echinocandins and amphotericin B easily. This study analysed 49 C auris isolates for alterations in hotspot-1 and hotspot-2 of FKS1 for the detection of mutations conferring reduced susceptibility to echinocandins.

Methods: C auris isolates (n = 49) obtained from 18 immunocompromised patients during June 2016-December 2018 were analysed.

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Objective: Candida auris has emerged as a health-care-associated and multidrug-resistant fungal pathogen of great clinical concern. As many as 50% of C. auris clinical isolates are reported to be resistant to amphotericin B, but no mechanisms contributing to this resistance have been identified.

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Article Synopsis
  • - The study examines the prevalence and types of candidemia (fungal bloodstream infections) in Kuwait during 2018, analyzing yeast isolates from major hospitals and their susceptibility to antifungal drugs.
  • - Out of 313 yeast isolates, 239 were identified during 234 infection episodes, with nearly half of the patients in intensive care; mixed species infections and reinfections were noted among some patients.
  • - Findings reveal alarming trends, including a high mortality rate (47%) in other yeast infections, high resistance rates to fluconazole, and an increase in certain Candida species, indicating a need for better resource allocation and infection management strategies.
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Kuwait started immunizing children <2 y age with the 7-valent pneumococcal conjugate vaccine, PCV7 from August 2007. PCV7 was replaced by the 13-valent conjugate vaccine, PCV13 from August 2010. In a previous analysis of the results for the period, August 2010-July 2013 (period II), there was no evidence of serotype-specific protection for invasive disease against the additional six serotypes to PCV7 present in PCV13 (non-PCV7 serotypes) as evidenced by isolation from blood and cerebrospinal fluid in any of the age groups, <2 y, 2-5 y, 6-50 y, 51-65 y, and >65 y and all ages, compared to the pre-vaccination period, August 2003-July 2006 (period I).

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Background: Gram-negative organisms harbouring carbapenem resistance genes (CRGs) are spreading globally, including in Gulf Cooperation Council (GCC) countries. However, relatively few data are available about carriage of CRGs in hospitalized patients in this region.

Aim: To determine prevalence of CRG carriage and risk factors for colonization among patients in GCC hospitals.

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Molecular methods detect genetic mutations associated with drug resistance. This study detected resistance-conferring mutations in gyrA/gyrB for fluoroquinolones and rrs/eis genes for second-line injectable drugs (SLIDs) among multidrug-resistant Mycobacterium tuberculosis (MDR-TB) isolates in Kuwait. Fifty pansusceptible M.

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Objective: This study evaluated the performance of GeneXpert MTB/RIF (Xpert) and ProbeTec ET (PTec-ET) assays in diagnosing extrapulmonary tuberculosis (EPTB) in Kuwait.

Materials And Methods: We tested nonrespiratory clinical specimens (n = 3,995) collected from 3,995 patients suspected to have EPTB. These included cavitary fluids (n = 2,054), fine-needle aspirate (FNA)/pus/tissue biopsy (n = 1,461), urine (n = 302), cerebrospinal fluid (CSF, n = 118), and others (n = 60).

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Objectives: To determine antibiotic susceptibility of Streptococcus pneumoniae and Haemophilus influenzae isolates from community-acquired respiratory tract infections (CA-RTIs) collected in 2015-17 from Kuwait, Lebanon and Saudi Arabia.

Methods: MICs were determined by CLSI broth microdilution and susceptibility was assessed using CLSI, EUCAST (dose-specific) and pharmacokinetic/pharmacodynamic (PK/PD) breakpoints.

Results: A total of 139 S.

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The original publication of this article [1] contained few erroneous paragraphs and errors in Table 1 and Table 2. The first four paragraphs are in the 'Results' section while the last four paragraphs are in the 'Discussion' section. The errors in Table 1 involve the number of isolates tested for pyrazinamide and pyrazinamide susceptible isolates, ethambutol-susceptible isolates with a mutation and number of resistant isolates with a mutation for streptomycin.

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Among non- species, is the leading cause of invasive infections in critically ill patients. It is intrinsically less susceptible to fluconazole/other azoles that limits therapeutic options. This study determined distribution of in clinical specimens and determined their susceptibility to fluconazole, caspofungin, and amphotericin B by test.

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Background: Increasing incidence of multidrug-resistant Mycobacterium tuberculosis infections is hampering global tuberculosis control efforts. Kuwait is a low-tuberculosis-incidence country, and ~ 1% of M. tuberculosis strains are resistant to rifampicin and isoniazid (MDR-TB).

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Background: Health care-associated infections (HAIs) in intensive care units (ICUs) specialized for neurocritical care (neurocritical care units [NCCUs]) are serious yet preventable complications that contribute significantly to morbidity and mortality worldwide. However, reliable data are scarcely available from the developing world. We aimed to analyze the incidence, epidemiology, microbial etiology, and outcomes of HAIs in an NCCU of a tertiary care teaching hospital in a high-income, developing country.

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Changing trends in incidence and antifungal susceptibility patterns of six Candida species causing candidemia in Kuwait between 2006-2017 are reported. A total of 2075 isolates obtained from 1448 patients were analyzed. Identity of Candida species isolates was determined by phenotypic methods and confirmed by PCR amplification/PCR-sequencing of rDNA and/or MALDI-TOF MS.

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Objective: Nontuberculous mycobacteria (NTM) often cause disease that is clinically indistinguishable from tuberculosis. Specific identification is important as treatment varies according to Mycobacterium species causing the infection. This study used multiplex PCR (mPCR) assay for rapid differentiation of mycobacterial growth indicator tube 960 system (MGIT) cultures as Mycobacterium tuberculosis (MTB) or NTM together with INNO LiPA Mycobacteria v2 assay (LiPA) and/or PCR sequencing of rDNA for species-specific identification of selected MTB and all NTM isolates in Kuwait.

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Article Synopsis
  • Accurate drug susceptibility testing (DST) for Mycobacterium tuberculosis is essential for managing multidrug-resistant tuberculosis (MDR-TB), particularly identifying mutations in the rpoB gene that confer resistance to rifampicin.
  • This study analyzed 242 rifampicin-susceptible strains in Kuwait, revealing that 4 out of 112 polydrug-resistant isolates had disputed mutations, while none of the pansusceptible isolates showed such mutations.
  • All 4 polydrug-resistant isolates were also resistant to isoniazid, and further testing indicated additional resistance to pyrazinamide and ethambutol in some cases, highlighting the complexity of MDR-TB resistance patterns.
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