Antonios Papadopoulos

Dr. Antonios Papadopoulos

orcid

Research Focus & Metrics

Academic Career Length

17Years (2010-Present)

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

Representative Publications

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1 October 2020 in Cell
Verified
Journal Article
Closed access
EGEvangelos J. Giamarellos-Bourboulis
Evangelos J. Giamarellos-Bourboulis
MTMaria Tsilika
Maria Tsilika
SMSimone Moorlag
Simone Moorlag
NANikolaos Antonakos
Nikolaos Antonakos
AKAntigone Kotsaki
Antigone Kotsaki
MNMihai G. Netea
Mihai G. Netea

1 June 2019 in Microorganisms
Verified
Journal Article
Open access
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Paraskevi C. FragkouParaskevi C. Fragkou
Paraskevi C. Fragkou
GPGaryphallia Poulakou
Garyphallia Poulakou
ABAndromachi Blizou
Andromachi Blizou
MBMyrto Blizou
Myrto Blizou
VRVasiliki Rapti
Vasiliki Rapti
Sotirios TsiodrasSotirios Tsiodras
Sotirios Tsiodras
Treatment options for multidrug resistant Acinetobacter baumannii strains (MDR-AB) are limited. Minocycline has been used alone or in combination in the treatment of infections associated with AB. A systematic review of the clinical use of minocycline in nosocomial infections associated with MDR-AB was performed according to the PRISMA-P guidelines. PubMed-Medline, Scopus and Web of Science TM databases were searched from their inception until March 2019. Additional Google Scholar free searches were performed. Out of 2990 articles, 10 clinical studies (9 retrospective case series and 1 prospective single center trial) met the eligibility criteria. In total, 223 out of 268 (83.2%) evaluated patients received a minocycline-based regimen; and 200 out of 218 (91.7%) patients with available data received minocycline as part of a combination antimicrobial regimen (most frequently colistin or carbapenems). Pneumonia was the most common infection type in the 268 cases (80.6% with 50.4% ventilator-associated pneumonia). The clinical and microbiological success rates following minocycline treatment were 72.6% and 60.2%, respectively. Mortality was 20.9% among 167 patients with relevant data. In this systematic review, minocycline demonstrated promising activity against MDR-AB isolates. This review sets the ground for further studies exploring the role of minocycline in the treatment of MDR-AB associated infections.

18 May 2014 in BMC Infectious Diseases
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Journal Article
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MKMarina Koupetori
Marina Koupetori
TRTheodoros Retsas
Theodoros Retsas
NANikolaos Antonakos
Nikolaos Antonakos
GVGlykeria Vlachogiannis
Glykeria Vlachogiannis
IPIoannis Perdios
Ioannis Perdios
Elizabeth ParamythiotouElizabeth Paramythiotou
Elizabeth Paramythiotou
Choice of empirically prescribed antimicrobials for sepsis management depends on epidemiological factors. The epidemiology of sepsis in Greece was studied in two large-periods.

3 March 2018 in Critical Care
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Journal Article
Open access
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GGGabriela Gainaru
Gabriela Gainaru
APAntonios Papadopoulos
Antonios Papadopoulos
Iraklis TsangarisIraklis Tsangaris
Iraklis Tsangaris
MLMALVINA LADA
MALVINA LADA
EGEvangelos J Giamarellos-Bourboulis
Evangelos J Giamarellos-Bourboulis
APAikaterini Pistiki
Aikaterini Pistiki
Evidence on the changes in the absolute counts of monocyte subpopulations in sepsis is missing. Firstly, absolute counts of circulating CD14pos/HLA-DRpos/CD45pos monocytes were measured by flow cytometry in 70 patients with Gram-negative sepsis and in 10 healthy volunteers. In the second phase, immunophenotyping was performed and the absolute count of circulating inflammatory monocytes and of circulating CD14dim/CD16pos/CD45pos patrolling monocytes were measured in another 55 patients and 10 healthy volunteers. Measurements were repeated on days 3, 7, and 10. Results were correlated with survival after 28 days. Greater numbers of CD14pos/HLA-DRpos/CD45pos monocytes were found on day 1 in survivors compared to nonsurvivors (p = 0.030). Receiver operating characteristic (ROC) analysis showed that a cutoff higher than 337 cells/mm3 on day 1 could discriminate between survivors and nonsurvivors with a positive predictive value (PPV) of 91.1%. Logistic regression including Sequential Organ Failure Assessment (SOFA) score and Acute Physiology and Chronic Health Evaluation (APACHE) II score showed that an absolute count greater than 337 cells/mm3 was independently associated with unfavorable outcome (odds ratio (OR) 0.19, p = 0.050). The absolute counts of inflammatory and of CD14dim/CD16pos/CD45pos monocytes were greater in patients than healthy controls during the entire 10 days of follow-up. The absolute counts on day 3 of CD14dim/CD16pos/CD45pos monocytes were greater in survivors than nonsurvivors (p = 0.027). ROC analysis revealed that the cutoff at 27 cells/mm3 could discriminate between survivors and nonsurvivors with PPV of 94.1%. Logistic regression including age, SOFA score, and APACHE II score showed that an absolute count greater than 27 cells/mm3 was independently associated with unfavorable outcome (OR 0.06, p = 0.033). Logistic regression analysis showed that intra-abdominal infection on day 1 was predictive of low CD14dim/ CD16pos/CD45pos count on day 3. Circulating counts of inflammatory and patrolling monocytes are greatly increased in Gram-negative sepsis. Absolute counts of CD14pos/HLA-DRpos/CD45pos monocytes on day 1 and CD14dim/CD16pos/CD45pos monocytes on day 3 are independently associated with final outcome. ClinicalTrials.gov, NCT01223690 . Registered retrospectively on 18 October 2010.

1 September 2022 in Journal of Fungi
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Journal Article
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MSMaria Siopi
Maria Siopi
APAntonios Papadopoulos
Antonios Papadopoulos
Anastasia SpiliopoulouAnastasia Spiliopoulou
Anastasia Spiliopoulou
FPFOTINI PALIOGIANNI
FOTINI PALIOGIANNI
NCNissrine Abou Chakra
Nissrine Abou Chakra
Iosif MeletiadisIosif Meletiadis
Iosif Meletiadis
The isolation of a pan-echinocandin-resistant Candida parapsilosis strain (anidulafungin, caspofungin, micafungin and rezafungin EUCAST MICs > 8 mg/L) from urine of a patient following prolonged exposure to echinocandins (38 days of micafungin followed by 16 days of anidulafungin) is described. The isolate harbored the novel alteration F652S in the hotspot 1 region of fks1. Isogenic C. parapsilosis bloodstream isolates collected up to 1.5 months earlier from the same patient were susceptible to echinocandins (anidulafungin, caspofungin and micafungin EUCAST MICs 1–2, 1 and 1 mg/L, respectively) and contained wild-type FKS1 sequences. This is the first report of pan-echinocandin resistance in C. parapsilosis associated with an aminoacid change in hotspot 1 region of fks1.

22 August 2014 in BMC Public Health
Verified
Journal Article
Open access
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DPDiamantis Plachouras
Diamantis Plachouras
AAAnastasia Antoniadou
Anastasia Antoniadou
EGEfthymia Giannitsioti
Efthymia Giannitsioti
LGLambrini Galani
Lambrini Galani
IKIoannis Katsarolis
Ioannis Katsarolis
EGELENI GIAMARELLOU
ELENI GIAMARELLOU
Antibiotic resistance, a major public health problem, has been linked to antibiotic consumption. In Greece both consumption and resistance rates are among the highest in Europe. A multifaceted campaign targeting both physicians and parents of school children was implemented for the first time in order to educate the public and update doctors, aiming to promote judicious use of antibiotics and hopefully decrease its consumption. The programme consisted of a public education campaign and academic detailing of primary care physicians in the district of Corinth in Peloponnese. The experience and perceptions of parents were recorded in the meetings in the form of course evaluation and assessment, anonymous questionnaires. The use of Rapid Antigen Detection Test (RADT) for streptococcal pharyngitis by primary care physicians was also assessed by use of anonymous questionnaires. Antibiotic consumption was compared before and after the programme between the district of Corinth and the other districts of Peloponnese, as well as at a national level. Antibiotic consumption remained unaltered at 26 Defined daily doses per 1000 Inhabitants per Day (DID) in accordance with the trend in other regions and at a national level. However, the utilization of Amoxycillin and Penicillin was increased by 34.3%, while the use of other antimicrobial classes including macrolides, cephalosporins and fluoroquinolones decreased by 6.4-21.9%. The use of RADT did not lead to a significantly decreased antimicrobial consumption. A multifaceted educational programme targeting both the general public and primary care physicians was associated with rationalization in the choice of antimicrobial. A reduction in the total antimicrobial consumption was not achieved.