Publications by authors named "Olga Ershova"

is one of the significant healthcare-associated meningitis agents characterized by multidrug resistance and a high mortality risk. Thirty-seven strains were isolated from thirty-seven patients of Moscow neuro-ICU with meningitis in 2013-2020. The death rate was 37.

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Background: The prognostic value of preoperative glycated hemoglobin (HbA1c) testing is controversial. The available evidence on the role of preoperative HbA1c in predicting postoperative complications after different surgical procedures has been conflicting. The primary aim of our retrospective observational cohort study was to assess the association between preoperative HbA1c and postoperative infections after elective craniotomy.

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Background: a member of the ESKAPE group of bacterial pathogens, has developed multi-antimicrobial resistance (AMR), including resistance to carbapenems, which has increased alarmingly due to the acquisition of carbapenemase genes located on specific plasmids.

Methods: Four clinical isolates were collected from four patients of a neuro-intensive care unit in Moscow, Russia, during the point prevalence survey. The AMR phenotype was estimated using the Vitec-2 instrument, and whole genome sequencing (WGS) was done using Illumina and Nanopore technologies.

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The spread of multidrug-resistant Gram-negative bacteria, which is associated with the distribution of beta-lactamase genes and class 1 and 2 integrons, is a global problem. In this study, in the Moscow neurosurgery intensive care unit (neuro-ICU), the high prevalence of the above-stated genes was found to be associated with intestinal and tracheal carriage. Seven-point prevalence surveys, which included 60 patients in the neuro-ICU, were conducted weekly in the period from Oct.

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The development of patterning materials ("resists") at the nanoscale involves two distinct trends: one is toward high sensitivity and resolution for miniaturization, the other aims at functionalization of the resists to realize bottom-up construction of distinct nanoarchitectures. Patterning of carbon nanostructures, a seemingly ideal application for organic functional resists, has been highly reliant on complicated pattern transfer processes because of a lack of patternable precursors. Herein, we present a fullerene-metal coordination complex as a fabrication material for direct functional patterning of sub-10 nm metal-containing carbon structures.

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Article Synopsis
  • The text discusses the significance of Klebsiella pneumoniae (KP) as a hospital pathogen, distinguishing between classical (cKp) and hypervirulent (hvKp) strains, as well as the emergence of hybrid strains with multi-drug resistance (MDR)!
  • A study of 70 distinct isolates in a Moscow neurosurgery ICU from 2014-2019 identified 20 genetic sequence types, highlighting the prevalence of specific strains and high rates of MDR (84.3%) and carbapenem resistance (45.7%)!
  • Whole-genome sequencing of selected strains revealed various important genes related to resistance and virulence, suggesting that understanding these genetic factors is crucial for both epidemiologists and clinicians in
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Background: Postoperative infections after brain surgery are a serious complication potentially worsening the outcome of surgical treatment. Severe intraoperative hyperglycemia (SIH) contributes to both infectious and noninfectious postoperative complications. However, there are a lack of data on the incidence of SIH in patients undergoing elective neurosurgical brain procedures and its association with the risk of postoperative infections.

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The incidence of healthcare-associated respiratory tract infections in non-ventilated patients (NVA-HARTI) in neurosurgical intensive care units (ICUs) is unknown. The impact of NVA-HARTI on patient outcomes and differences between NVA-HARTI and ventilator-associated healthcare-associated respiratory tract infections (VA-HARTI) are poorly understood. Our objectives were to report the incidence, hospital length of stay (LOS), ICU LOS, and mortality in NVA-HARTI patients and compare these characteristics to VA-HARTI in neurocritical care patients.

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Purpose: To compare the efficacy and safety of ketoprofen plasters and diclofenac plasters after 3 weeks of administration in patients with osteoarthritis-related knee pain.

Methods: This multicenter, randomized, active-controlled, open-label, parallel-group, noninferiority phase III study randomized 236 adults with osteoarthritis-related knee pain for 3 weeks with ketoprofen plaster 30 mg twice daily (n = 118) or diclofenac plaster 15 mg once daily (n = 118). The primary efficacy end point was the mean change from baseline to week 3 in the mean knee pain intensity score during walking, as measured by a 100-mm visual analog scale with a predefined noninferiority margin of 10.

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The purpose of this study was the identification of genetic lineages and antimicrobial resistance (AMR) and virulence genes in isolates associated with severe infections in the neuro-ICU. Susceptibility to antimicrobials was determined using the Vitek-2 instrument. AMR and virulence genes, sequence types (STs), and capsular types were identified by PCR.

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Article Synopsis
  • The external ventricular drain (EVD) is commonly used in neurosurgery to manage issues like impaired cerebrospinal fluid circulation and intracranial hypertension, especially in cases of acute aneurysmal subarachnoid hemorrhage (aSAH).
  • A study at the Burdenko Neurosurgical Center involving 645 patients aimed to evaluate the effectiveness and safety of EVD in post-microsurgery scenarios and included various assessments like hemorrhage severity and potential complications.
  • Results focused on comparing the use of EVD versus decompressive craniectomy, the incidence of EVD-related infections, and the need for additional interventions post-EVD, ultimately assessing patient outcomes upon discharge.
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Multidrug resistance (MDR) and hypervirulence (hv) have been long considered distinct evolutionary traits for (Kp), a versatile human pathogen. The recent emergence of Kp strains combining these traits poses a serious global threat. In this article, we describe the phenotypic and genomic characteristics of an MDR hvKp isolate, MAR14-456, representative of a nosocomial outbreak in Moscow, Russia, that was recovered from a postoperative wound in a patient who later developed multiple abscesses, fatal sepsis, and septic shock.

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Unlabelled: A retrospective cohort study determined the high incidence of recurrent fractures in osteoporotic patients with high fracture risk during the observation. The strategy of starting treatment with more potent regimens (zoledronic acid, denosumab and/or teriparatide) seems to have the best secondary fracture prevention efficacy.

Objective: This paper describes the various medical therapy regimens prescribed to osteoporotic patients with high fracture risk and the result of treatment.

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Unlabelled: Changes in health-related quality of life (QoL) due to hip, humeral, ankle, spine, and distal forearm fracture were measured in Russian adults age 50 years or more over the first 18 months after fracture. The accumulated mean QoL loss after hip fracture was 0.5 and significantly greater than after fracture of the distal forearm (0.

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Background: The impact of infection prevention and control (IPC) programs in limited resource countries such as Russia are largely unknown due to a lack of reliable data. The aim of this study is to evaluate the effect of an IPC program with respect to healthcare associated infection (HAI) prevention and to define the incidence of HAIs in a Russian ICU.

Methods: A pioneering IPC program was implemented in a neuro-ICU at Burdenko Neurosurgery Institute in 2010 and included hand hygiene, surveillance, contact precautions, patient isolation, and environmental cleaning measures.

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The antibacterial resistance and virulence genotypes and phenotypes of 148 non-duplicate Klebsiella pneumoniae strains collected from 112 patients in Moscow hospitals in 2012-2016 including isolates from the respiratory system (57%), urine (30%), wounds (5%), cerebrospinal fluid (4%), blood (3%), and rectal swab (1%) were determined. The majority (98%) were multidrug resistant (MDR) strains carrying bla (91%), bla (74%), bla (51%), bla (38%), and bla (1%) beta-lactamase genes, class 1 integrons (38%), and the porin protein gene ompK36 (96%). The beta-lactamase genes bla, bla, bla, bla, bla, bla, bla, bla, bla, bla, and bla were detected; class 1 integron gene cassette arrays (aadA1), (dfrA7), (dfrA1-orfC), (aadB-aadA1), (dfrA17-aadA5), and (dfrA12-orfF-aadA2) were identified.

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Background: The effect of oral and/or parenteral ademetionine (500 mg intravenous [IV] and tablet formulation) on clinical symptoms and biochemical markers of intrahepatic cholestasis (IHC) was investigated in subjects with alcoholic liver disease (ALD) and compensated liver function.

Methods: Prospective, multicenter, open-label study consisting of a screening period and an 8-week treatment period and performed in subjects (18-75 years) with compensated ALD and confirmed IHC. Subjects with a baseline serum conjugated bilirubin value above normal range were initially treated with IV ademetionine for two weeks (500-800 mg daily) and continued with oral ademetionine 1500 mg daily for a further six weeks.

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Purpose: To define the incidence of healthcare-associated ventriculitis and meningitis (HAVM) in the neuro-ICU and to identify HAVM risk factors using tree-based machine learning (ML) algorithms.

Methods: An observational cohort study was conducted in Russia from 2010 to 2017, and included high-risk neuro-ICU patients. We utilized relative risk analysis, regressions, and ML to identify factors associated with HAVM development.

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Introduction: The International Costs and Utilities Related to Osteoporotic fractures Study is a multinational observational study set up to describe the costs and quality of life (QoL) consequences of fragility fracture. This paper aims to estimate and compare QoL after hip, vertebral, and distal forearm fracture using time-trade-off (TTO), the EuroQol (EQ) Visual Analogue Scale (EQ-VAS), and the EQ-5D-3L valued using the hypothetical UK value set.

Methods: Data were collected at four time-points for five QoL point estimates: within 2 weeks after fracture (including pre-fracture recall), and at 4, 12, and 18 months after fracture.

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We report genome sequences of two NDM-1 metallo-β-lactamase-producing multidrug-resistant isolates of sequence type 147 (ST147) from one hospital. The genomes are highly similar and differ in prophage located in the chromosome of KPB-1470/16 and in the additional plasmid-carrying gene in KPB-417/16.

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Hospital Klebsiella pneumoniae strains (n = 196) were collected in 2012-16 from the patients of a Moscow neurosurgical intensive care unit. Klebsiella pneumoniae strains were multidrug-resistant and carried beta-lactamase genes blaSHV (97.4% of strains), blaCTX-M (84.

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Recombinant interferon-β1b (IFN-β1b) is an effective remedy against multiple sclerosis and other diseases. However, use of small polypeptide (molecular weight is around 18.5 kDa) is limited due to poor solubility, stability, and short half-life in systemic circulation.

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Background: The spread of carbapenemase-producing Enterobacteriaceae (CPE) is a great problem of healthcare worldwide. Study of the spread for bla OXA-48-like genes coding epidemically significant carbapenemases among hospital pathogens is important for the regional and global epidemiology of antimicrobial resistance.

Methods: Antibacterial resistant isolates of Klebsiella pneumoniae (n = 95) from 54 patients, P.

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Data collected in electronic patient records (EPR) databases may be used for different goals besides their direct purpose - information support for medical staff in their everyday activities. One of the most promising spheres is a monitoring of various processes induced in medical facility. In our studies EPR serves as a basis for healthcare associated infections (HAI) surveillance system at neurosurgical intensive care unit.

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We present new potential energy surfaces for the interaction of NO(C (2)Π) with each of Ne, Kr, and Xe. The potential energy surfaces have been calculated using second order Møller-Plesset perturbation theory, exploiting a procedure to converge the reference Hartree-Fock wavefunction for the excited states: the maximum overlap method. The bound rovibrational states obtained from the surfaces are used to simulate the electronic spectra and their appearance is in good agreement with available (2+1) REMPI spectra.

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