Mihai Sava

Prof. Dr. Mihai Sava

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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27 April 2024 in Antibiotics
Verified
Journal Article
Open access
PDF file
BABereanu Simona Alina
Bereanu Simona Alina
RBRares Bereanu
Rares Bereanu
CMCosmin Ioan Mohor
Cosmin Ioan Mohor
BVBogdan Ioan Vintilă
Bogdan Ioan Vintilă
ICIoana Roxana Codru
Ioana Roxana Codru
Mihai SavaMihai Sava
Mihai Sava
The ESKAPE group (Enterococcus faecium, Staphylococcus aureus, Klebsiella Pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, Enterobacter spp.) is a group of bacteria very difficult to treat due to their high ability to acquire resistance to antibiotics and are the main cause of nosocomial infections worldwide, posing a threat to global public health. Nosocomial infections with MDR bacteria are found mainly in Intensive Care Units, due to the multitude of maneuvers and invasive medical devices used, the prolonged antibiotic treatments, the serious general condition of these critical patients, and the prolonged duration of hospitalization. Materials and Methods: During a period of one year, from January 2023 to December 2023, this cross-sectional study was conducted on patients diagnosed with sepsis admitted to the Intensive Care Unit of the Sibiu County Emergency Clinical Hospital. Samples taken were tracheal aspirate, catheter tip, pharyngeal exudate, wound secretion, urine culture, blood culture, and peritoneal fluid. Results: The most common bacteria isolated from patients admitted to our Intensive Care Unit was Klebsiella pneumoniae, followed by Acinetobacter baumanii and Pseudomonas aeruginosa. Gram-positive cocci (Enterococcus faecium and Staphilococcus aureus) were rarely isolated. Most of the bacteria isolated were MDR bacteria. Conclusions: The rise of antibiotic and antimicrobial resistance among strains in the nosocomial environment and especially in Intensive Care Units raises serious concerns about limited treatment options.

28 March 2024 in Microorganisms
Verified
Journal Article
Open access
PDF file
BABereanu Simona Alina
Bereanu Simona Alina
BVBogdan Ioan Vintilă
Bogdan Ioan Vintilă
RBRares Bereanu
Rares Bereanu
ICIoana Roxana Codru
Ioana Roxana Codru
AHAdrian Gheorghe Hasegan
Adrian Gheorghe Hasegan
Mihai SavaMihai Sava
Mihai Sava
The worldwide increase of multidrug-resistant Gram-negative bacteria is a global threat. The emergence and global spread of Klebsiella pneumoniae carbapenemase- (KPC-) producing Klebsiella pneumoniae represent a particular concern. This pathogen has increased resistance and abilities to persist in human reservoirs, in hospital environments, on medical devices, and to generate biofilms. Mortality related to this microorganism is high among immunosuppressed oncological patients and those with multiple hospitalizations and an extended stay in intensive care. There is a severe threat posed by the ability of biofilms to grow and resist antibiotics. Various nanotechnology-based strategies have been studied and developed to prevent and combat serious health problems caused by biofilm infections. The aim of this review was to evaluate the implications of nanotechnology in eradicating biofilms with KPC-producing Klebsiella pneumoniae, one of the bacteria most frequently associated with nosocomial infections in intensive care units, including in our department, and to highlight studies presenting the potential applicability of TiO2 nanocomposite materials in hospital practice. We also described the frequency of the presence of bacterial biofilms on medical surfaces, devices, and equipment. TiO2 nanocomposite coatings are one of the best long-term options for antimicrobial efficacy due to their biocompatibility, stability, corrosion resistance, and low cost; they find their applicability in hospital practice due to their critical antimicrobial role for surfaces and orthopedic and dental implants. The International Agency for Research on Cancer has recently classified titanium dioxide nanoparticles (TiO2 NPs) as possibly carcinogenic. Currently, there is an interest in the ecological, non-toxic synthesis of TiO2 nanoparticles via biological methods. Biogenic, non-toxic nanoparticles have remarkable properties due to their biocompatibility, stability, and size. Few studies have mentioned the use of nanoparticle-coated surfaces as antibiofilm agents. A literature review was performed to identify publications related to KPC-producing Klebsiella pneumoniae biofilms and antimicrobial TiO2 photocatalytic nanocomposite coatings. There are few reviews on the antibacterial and antibiofilm applications of TiO2 photocatalytic nanocomposite coatings. TiO2 nanoparticles demonstrated marked antibiofilm activity, but being nano in size, these nanoparticles can penetrate cell membranes and may initiate cellular toxicity and genotoxicity. Biogenic TiO2 nanoparticles obtained via green, ecological technology have less applicability but are actively investigated.

16 May 2023 in Antibiotics
Verified
Journal Article
Open access
PDF file
BVBogdan Ioan Vintilă
Bogdan Ioan Vintilă
A(Anca-Maria Arseniu (Borcea)
Anca-Maria Arseniu (Borcea)
Anca ButucaAnca Butuca
Anca Butuca
Mihai SavaMihai Sava
Mihai Sava
Victoria BirlutiuVictoria Birlutiu
Victoria Birlutiu
Felicia Gabriela GligorFelicia Gabriela Gligor
Felicia Gabriela Gligor
Antimicrobial resistance is considered one of the major threats to public health and is an important factor that influences the patient’s outcome in the intensive care unit. Pharmacovigilance can help raise awareness of potential drug resistance (DR) or ineffectiveness (DI) through adverse drug reaction reports that are submitted to different spontaneous reporting systems. Based on spontaneous Individual Case Safety Reports from EudraVigilance, we conducted a descriptive analysis of adverse drug reactions associated with meropenem, colistin, and linezolid, with a focus on DR and DI. Of the total adverse drug reactions (ADRs) reported for each analyzed antibiotic by 31 December 2022, between 2.38–8.42% and 4.15–10.14% of the reports were related to DR and DI, respectively. A disproportionality analysis was conducted to evaluate the frequency of reporting adverse drug reactions relevant to the DR and DI of the analyzed antibiotics compared to other antimicrobials. Based on the analysis of the collected data, this study underlines the importance of post-marketing drug safety monitoring in raising a warning signal regarding antimicrobial resistance, thereby potentially contributing to the reduction in antibiotic treatment failure in an intensive care setting.

1 February 2024 in Antibiotics
Verified
Journal Article
Open access
PDF file
BVBogdan Ioan Vintilă
Bogdan Ioan Vintilă
A(Anca-Maria Arseniu (Borcea)
Anca-Maria Arseniu (Borcea)
CMClaudiu Morgovan
Claudiu Morgovan
Anca ButucaAnca Butuca
Anca Butuca
Victoria BirlutiuVictoria Birlutiu
Victoria Birlutiu
Felicia Gabriela GligorFelicia Gabriela Gligor
Felicia Gabriela Gligor
Clostridioides difficile is a Gram-positive bacteria that causes nosocomial infections, significantly impacting public health. In the present study, we aimed to describe the clinical characteristics, outcomes, and relationship between antibiotic exposure and Clostridioides difficile infection (CDI) in patients based on reports from two databases. Thus, we conducted a retrospective study of patients diagnosed with CDI from Sibiu County Clinical Emergency Hospital (SCCEH), Romania, followed by a descriptive analysis based on spontaneous reports submitted to the EudraVigilance (EV) database. From 1 January to 31 December 2022, we included 111 hospitalized patients with CDI from SCCEH. Moreover, 249 individual case safety reports (ICSRs) from EVs were analyzed. According to the data collected from SCCEH, CDI was most frequently reported in patients aged 65–85 years (66.7%) and in females (55%). In total, 71.2% of all patients showed positive medical progress. Most cases were reported in the internal medicine (n = 30, 27%), general surgery (n = 26, 23.4%), and infectious disease (n = 22, 19.8%) departments. Patients were most frequently exposed to ceftriaxone (CFT) and meropenem (MER). Also, in the EV database, most CDI-related ADRs were reported for CFT, PIP/TAZ (piperacillin/tazobactam), MER, and CPX (ciprofloxacin). Understanding the association between previous antibiotic exposure and the risk of CDI may help update antibiotic stewardship protocols and reduce the incidence of CDI by lowering exposure to high-risk antibiotics.

28 September 2024 in Microorganisms
Verified
Journal Article
Open access
PDF file
ICIoana Roxana Codru
Ioana Roxana Codru
BVBogdan Ioan Vintilă
Bogdan Ioan Vintilă
Mihai SavaMihai Sava
Mihai Sava
BABereanu Simona Alina
Bereanu Simona Alina
SNSandra Ioana Neamțu
Sandra Ioana Neamțu
Victoria BirlutiuVictoria Birlutiu
Victoria Birlutiu
Healthcare-associated infections, such as ventilator-associated pneumonia and biofilm formation on intubation cannulas, impose significant burdens on hospitals, affecting staffing, finances, and patient wellbeing, while also increasing the risk of patient mortality. We propose a research study aimed at exploring various methodologies for detecting these infections, discovered in the biofilm on medical devices, particularly tracheal cannulas, and understanding the role of each method in comprehending these infections from an etiological perspective. Our investigation also involves an analysis of the types of endotracheal tubes utilized in each case, the bacteria species identified, and strategies for combating biofilm-associated infections. The potential impact of our research is the substantial improvement of patient care through enhanced diagnosis and management of these infections.

22 December 2025 in Medicina
Verified
Journal Article
Open access
PDF file
SNSandra Ioana Neamțu
Sandra Ioana Neamțu
Mihai SavaMihai Sava
Mihai Sava
BABereanu Simona Alina
Bereanu Simona Alina
RBRaluca Badila
Raluca Badila
ICIoana Roxana Codru
Ioana Roxana Codru
RCRadu Chicea
Radu Chicea
Background and Objectives: Preterm prelabor rupture of membranes (PPROM) is a significant obstetric complication associated with increased maternal and neonatal morbidity and mortality. Inflammation plays a central role in its pathophysiology, and maternal inflammatory biomarkers have gained increasing attention as potential predictors of disease onset and adverse outcomes. Materials and Methods: This systematic review and meta-analysis synthesized evidence from PubMed, Scopus and Web of Science databases evaluating maternal inflammatory biomarkers—particularly interleukin-6 (IL-6)—in women with PPROM compared with controls. Eligible studies assessed biomarker levels in serum, plasma, or amniotic fluid and reported quantitative outcomes. Data were pooled using random-effects models, and heterogeneity was quantified using the I2 statistic. Results: A total of 23 studies involving 2841 participants were included. Maternal IL-6 concentrations were significantly elevated in PPROM compared with controls in both maternal serum (pooled SMD = 1.72; 95% CI: 1.15–2.29; p < 0.001) and amniotic fluid (SMD = 2.84; 95% CI: 2.01–3.67; p < 0.001). CRP showed a moderate association (SMD = 0.98; 95% CI: 0.61–1.36; p < 0.001), whereas IL-8 and TNF-α displayed inconsistent relationships. Conclusions: Elevated maternal IL-6 concentrations, particularly in amniotic fluid, are strongly associated with PPROM and adverse perinatal outcomes. IL-6 demonstrated superior diagnostic and prognostic value compared with other inflammatory markers. These findings support IL-6 as a promising biomarker for early risk identification and individualized the management of high-risk pregnancies.