Olga Tronina

Dr. Olga Tronina


Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

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

Representative Publications

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26 January 2022 in Annals of Transplantation
Verified
Journal Article
Open access
WSWojciech Andrzej Straś
Wojciech Andrzej Straś
DWDariusz Wasiak
Dariusz Wasiak
BŁBeata Łągiewska
Beata Łągiewska
OTOlga Tronina
Olga Tronina
MHMarta Hreńczuk
Marta Hreńczuk
PMPiotr Małkowski
Piotr Małkowski
Liver transplantation (LTx) is the best treatment for patients with early-stage hepatocellular carcinoma (HCC). The Milan criteria positively influenced results of liver transplantation and were adopted by the majority of cancer centers, becoming the criterion standard treatment for early-stage HCC. Despite the use of restrictive criteria, recurrence is still high, affecting between 8% and 20% of cases, and is a significant predictor of survival after LTx.

22 July 2021 in Cancers
Verified
Journal Article
Open access
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Robert FlisiakRobert Flisiak
Robert Flisiak
Dorota Zarębska-MichalukDorota Zarębska-Michaluk
Dorota Zarębska-Michaluk
EJEwa Janczewska
Ewa Janczewska
TŁTadeusz Łapiński
Tadeusz Łapiński
MRMagdalena Rogalska
Magdalena Rogalska
JJJerzy Jaroszewicz
Jerzy Jaroszewicz
(1) Background: Treatment of hepatitis C virus (HCV) infections with direct-acting antivirals (DAA) has demonstrated high efficacy and an excellent safety profile. The cured patients showed a sustained virological response and improved liver function, but also a continued risk of hepatocellular carcinoma (HCC) during the 2–3 years of follow-up after treatment; (2) Methods: A total of 192 patients out of 209 of the primary AMBER study were analyzed five years after treatment with ombitasvir/paritaprevir/ritonavir with or without dasabuvir and with or without ribavirin. Results: We confirmed that HCV clearance after DAA treatment is stable regardless of baseline liver fibrosis. We found that sustained virologic response is associated with a gradual but significant reduction in liver stiffness over 5 years. Liver function improved during the first 2 years of follow-up and remained stable thereafter. The risk of death due to HCC as well as death due to HCV persists through 5 years of follow-up after successful DAA treatment. However, in non-cirrhotic patients, it appears to clear up 3 years after treatment; (3) Conclusions: Monitoring for more than 5 years after curing HCV infection is necessary to assess the long-term risk of possible development of HCC, especially in patients with cirrhosis of the liver.

3 March 2021 in Liver International
Verified
Journal Article
Closed access
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AKAleksandra Berkan Kawinska
Aleksandra Berkan Kawinska
APAnna Piekarska
Anna Piekarska
EJEwa Janczewska
Ewa Janczewska
BLBeata Lorenc
Beata Lorenc
MTMagdalena Tudrujek-Zdunek
Magdalena Tudrujek-Zdunek
Robert FlisiakRobert Flisiak
Robert Flisiak

1 September 2022 in Journal of Clinical Medicine
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Journal Article
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Paweł RajewskiPaweł Rajewski
Paweł Rajewski
Dorota Zarębska-MichalukDorota Zarębska-Michaluk
Dorota Zarębska-Michaluk
EJEwa Janczewska
Ewa Janczewska
AGAndrzej Gietka
Andrzej Gietka
WMWłodzimerz Mazur
Włodzimerz Mazur
Robert FlisiakRobert Flisiak
Robert Flisiak
Hepatitis C infection is one of the main reasons for liver cirrhosis and hepatocellular carcinoma. In recent years, more and more is being heard about extrahepatic manifestations of the hepatitis C infection including its possible influence on the development of hypertension and cardiovascular diseases. In the given work, the frequency analysis of the incidence of hypertension and cardiovascular diseases among 2898 HCV-infected patients treated in Poland and the assessment of their relevance to the HCV genotype and the progression of liver fibrosis can be found. The prevalence of hypertension in the group of analyzed patients was 39% and was significantly associated with old age (OR = 1.08 (1.07–1.08)) and female sex, as well as the progression of liver fibrosis (OR = 1.54 (1.29–1.85)). Hypertension was found in 47.6% of patients with F4 fibrosis, 42.1% of patients with F3 fibrosis, and 25% of patients with F1 fibrosis. The incidence of cardiovascular disease in the studied group of patients was as follows: all incidents, 131 (4.52%); including ischemic heart disease 104, (3.95%); stroke, 2 (0.07%); atherosclerosis, 21 (0.72%); and aneurysms, 4 (0.14%). The obtained results prove that the prevalence of cardiovascular diseases is significantly associated with the advanced age of patients and the progression of liver fibrosis. The relevance of sex and the HCV genotype to the prevalence frequency of cardiovascular diseases in the study group has not been proven. This being the case, no differences in the frequency of their incidence depending on the HCV genotype, including genotype 3, was found. Hepatitis C infection as a non-classical risk factor for cardiovascular disease and hypertension does require further studying.

7 April 2017 in Annals of Transplantation
Verified
Journal Article
Open access
PDF file
OTOlga Tronina
Olga Tronina
MDMagdalena Durlik
Magdalena Durlik
MWMarta Wawrzynowicz-Syczewska
Marta Wawrzynowicz-Syczewska
ABArida Buivydiene
Arida Buivydiene
KKKrum Katzarov
Krum Katzarov
Robert FlisiakRobert Flisiak
Robert Flisiak
BACKGROUND The introduction of direct-acting antivirals (DAAs) has considerably improved therapeutic outcomes for patients with chronic hepatitis C virus (HCV) infections. The AMBER-CEE study aimed to assess real-world efficacy and safety of ombitasvir/paritaprevir/ritonavir/+ dasabuvir ±ribavirin (OBV/PTV/r/ +DSV±RBV) in the treatment of post-transplant recurrence of HCV infection. MATERIAL AND METHODS Liver transplant recipients with recurrent HCV genotype 1 infection, scheduled for OBV/PTV/r/+DSV±RBV according to therapeutic guidelines, were eligible. The primary efficacy endpoint was sustained virologic response (SVR) 12 weeks after the end of treatment (FU12). Clinical and laboratory adverse events (AEs) were recorded from baseline to FU12. RESULTS A total of 35 patients were included: 91.4% genotype 1b-infected, 94.3% treatment-experienced, and 77.1% at fibrosis stage ≥F2. SVR12 was achieved by all patients (35/35, 100%) including one patient with genotype 1a, one patient with detectable HCV RNA at the end of treatment, two patients with a history of first-generation DAA therapy, and two patients who prematurely discontinued the regimen. AEs were experienced by 22 patients (62.9%) and were mostly mild. No death, graft loss, or acute graft rejections were reported during the therapy. On-treatment hepatic decompensation occurred in three patients (8.6%). Anemia was observed in 29 patients (83.9%), with 21 (60%) requiring RBV dose reduction or discontinuation. CONCLUSIONS OBV/PTV/r/+DSV±RBV has excellent efficacy in post-transplant recurrence of HCV genotype 1-infection treated under real-world conditions. Excellent virologic outcomes were observed irrespective of prior treatment history or the degree of fibrosis, and AEs were mostly mild and transient.

31 October 2022 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
KCKinga Czarnecka
Kinga Czarnecka
PCPaulina Czarnecka
Paulina Czarnecka
OTOlga Tronina
Olga Tronina
MDMagdalena Durlik
Magdalena Durlik
Background: Molnupiravir is approved for the treatment of adult patients with mild to moderate COVID-19. The main goal of the treatment is to reduce hospitalization and mortality rate. This study aimed at the all-cause hospitalization and all-cause death assessment in patients at high risk of severe COVID-19 treated with molnupiravir. Methods: This was a prospective, observational single center study. Non-hospitalized patients with SARS-CoV-2 infection, COVID-19 symptoms with the onset of up to 5 days, and at high risk of severe COVID-19 illness received molnupiravir based on attending physician decisions. Results: In total, 107 patients were enrolled. Adverse events were reported in 28.0% of patients, with nausea and abdominal pain being the most commonly observed. No treatment-emergent AEs resulted in therapy discontinuation. Overall, 15 patients required hospitalization. During the observation, 2.8% (n = 3) of patients subsequently died. All deaths were considered to be related to COVID-19 complications. Age over 65 years, heart failure, and ischemic heart disease showed a significant correlation with the severe course of COVID-19. Conclusion: Molnupiravir may be perceived as an alternative treatment for patients with immunosuppression and advanced chronic kidney disease. Nevertheless, further studies are required to conclusively establish a role for molnupiravir in future COVID-19 treatment recommendations.