Jędrzej Chrzanowski

Mr. Jędrzej Chrzanowski

Department of Biostatistics and Translational Medicine, Medical University of Lodz, Poland
orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

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

Representative Publications

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24 August 2021 in Journal of Clinical Medicine
Verified
Journal Article
Open access
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AGAgata Gabryelska
Agata Gabryelska
JCJędrzej Chrzanowski
Jędrzej Chrzanowski
MSMarcin Sochal
Marcin Sochal
PKPiotr Kaczmarski
Piotr Kaczmarski
STSzymon Turkiewicz
Szymon Turkiewicz
PBPiotr Bialasiewicz
Piotr Bialasiewicz
Obstructive sleep apnea (OSA) is a recognized independent risk factor for metabolic disorders, type 2 diabetes mellites (DM2) in particular. Therefore, the study aimed to assess the influence of nocturnal oxygen saturation parameters on the onset of DM2 among OSA patients. The study consisted of 549 participants, who underwent polysomnography examination. Based on apnea hypopnea index (AHI), 465 patients were diagnosed with OSA. One hundred and seven individuals had comorbid DM2. Cox regression models were used to assess the effect of oxygen saturation parameters on the onset of DM2. Classification and regression trees (CART) analysis was used to assess the onset of the DM2 in the study group in context of oxygen saturation variables. One-way Cox regression showed higher risk of earlier DM2 for increased values of BMI, AHI, decreased basal O2 and O2 nadir value, while lowered mean O2 desaturation has not shown statistical significance. In the CART analysis, the following cut-off points 92.2%, 81.7%, 87.1% were determined for basal O2, O2 nadir and mean O2 desaturation, respectively, with the first two parameters being statistically significant. Therefore, basal O2 is independent from AHI, BMI and age is a risk factor of DM2 among OSA patients.

10 November 2022 in Diabetes Care
Verified
Journal Article
Open access
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JCJędrzej Chrzanowski
Jędrzej Chrzanowski
SGSzymon Grabia
Szymon Grabia
AMArkadiusz Michalak
Arkadiusz Michalak
AWAnna Wielgus
Anna Wielgus
JWJulia Wykrota
Julia Wykrota
WFWojciech Fendler
Wojciech Fendler
Continuous glucose monitoring (CGM) has become the target standard of care for people with diabetes and an abundant source of health care data (1). However, dow

17 January 2020 in The Journal of Maternal-Fetal & Neonatal Medicine
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Journal Article
Closed access
AJAnnak Jadczak
Annak Jadczak
MRMaria Respondek-Liberska
Maria Respondek-Liberska
ŁSŁukasz Sokołowski
Łukasz Sokołowski
JCJędrzej Chrzanowski
Jędrzej Chrzanowski
Giuseppe RizzoGiuseppe Rizzo
Giuseppe Rizzo
IGInternational Prenatal Cardiology Collaboration Group
International Prenatal Cardiology Collaboration Group
Objective: Despite advances in prenatal diagnosis and postnatal intervention/surgery methods, patients with Hypoplastic Left Heart Syndrome (HLHS) and coexisting foramen oval restriction still achieve high mortality rates. Our objective was to determine survival predictors and to find answers to, why restriction develops in some, but not others. Methods: We performed a retrospective analysis of prenatal history and postnatal sequel of 22 patients with HLHS and foramen ovale restriction between 2008 and 2017. Results: There were 11 survivors and 11 nonsurvivors. The most significant difference between the two groups pertained to the average time of foramen ovale restriction diagnosis which was 33 weeks for survivors and 28 weeks for nonsurvivors (p = .0416) and the duration of in-utero restriction (9 versus 5 weeks, p = .0213). Twenty patients (20/22) exhibited possible signs of infection. Conclusions: (1) Earlier development and longer presence of foramen ovale restriction in the setting of HLHS is associated with higher short-term mortality regardless of the degree of restriction. (2) Ratio of forward pulmonary vein flow to reverse flow (f/r) expressed as a velocity-time integral (VTI) is a good emergent intervention predictor, but it does not correlate with foramen ovale size and maximal velocity, nor does it influence survival rates. (3) Ultrasonographic signs of possible infection of the fetus is a potential risk factor of foramen ovale restriction development in patients with HLHS.

12 April 2021 in Journal of Medical Internet Research
Verified
Journal Article
Open access
JCJędrzej Chrzanowski
Jędrzej Chrzanowski
JSJulia Sołek
Julia Sołek
WFWojciech Fendler
Wojciech Fendler
DJDariusz Jemielniak
Dariusz Jemielniak
Background: In the current era of widespread access to the internet, we can monitor public interest in a topic via information-targeted web browsing. We sought to provide direct proof of the global population’s altered use of Wikipedia medical knowledge resulting from the new COVID-19 pandemic and related global restrictions. Objective: We aimed to identify temporal search trends and quantify changes in access to Wikipedia Medicine Project articles that were related to the COVID-19 pandemic. Methods: We performed a retrospective analysis of medical articles across nine language versions of Wikipedia and country-specific statistics for registered COVID-19 deaths. The observed patterns were compared to a forecast model of Wikipedia use, which was trained on data from 2015 to 2019. The model comprehensively analyzed specific articles and similarities between access count data from before (ie, several years prior) and during the COVID-19 pandemic. Wikipedia articles that were linked to those directly associated with the pandemic were evaluated in terms of degrees of separation and analyzed to identify similarities in access counts. We assessed the correlation between article access counts and the number of diagnosed COVID-19 cases and deaths to identify factors that drove interest in these articles and shifts in public interest during the subsequent phases of the pandemic. Results: We observed a significant (P<.001) increase in the number of entries on Wikipedia medical articles during the pandemic period. The increased interest in COVID-19–related articles temporally correlated with the number of global COVID-19 deaths and consistently correlated with the number of region-specific COVID-19 deaths. Articles with low degrees of separation were significantly similar (P<.001) in terms of access patterns that were indicative of information-seeking patterns. Conclusions: The analysis of Wikipedia medical article popularity could be a viable method for epidemiologic surveillance, as it provides important information about the reasons behind public attention and factors that sustain public interest in the long term. Moreover, Wikipedia users can potentially be directed to credible and valuable information sources that are linked with the most prominent articles.

1 February 2023 in The Journal of Immunology
Verified
Journal Article
Closed access
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WCWojciech Cypryk
Wojciech Cypryk
LCLiliana Czernek
Liliana Czernek
KHKatarzyna Horodecka
Katarzyna Horodecka
JCJędrzej Chrzanowski
Jędrzej Chrzanowski
MSMarcin Stańczak
Marcin Stańczak
SMSampsa Matikainen
Sampsa Matikainen
Human macrophages secrete extracellular vesicles (EVs) loaded with numerous immunoregulatory proteins. Vesicle-mediated protein secretion in macrophages is regulated by poorly characterized mechanisms; however, it is now known that inflammatory conditions significantly alter both the quantities and protein composition of secreted vesicles. In this study, we employed high-throughput quantitative proteomics to characterize the modulation of EV-mediated protein secretion during noncanonical caspase-4/5 inflammasome activation via LPS transfection. We show that human macrophages activate robust caspase-4–dependent EV secretion upon transfection of LPS, and this process is also partially dependent on NLRP3 and caspase-5. A similar effect occurs with delivery of the LPS with Escherichia coli–derived outer membrane vesicles. Moreover, sensitization of the macrophages through TLR4 by LPS priming prior to LPS transfection dramatically augments the EV-mediated protein secretion. Our data demonstrate that this process differs significantly from canonical inflammasome activator ATP-induced vesiculation, and it is dependent on the autocrine IFN signal associated with TLR4 activation. LPS priming preceding the noncanonical inflammasome activation significantly enhances vesicle-mediated secretion of inflammasome components caspase-1, ASC, and lytic cell death effectors GSDMD, MLKL, and NINJ1, suggesting that inflammatory EV transfer may exert paracrine effects in recipient cells. Moreover, using bioinformatics methods, we identify 15-deoxy-Δ12,14-PGJ2 and parthenolide as inhibitors of caspase-4–mediated inflammation and vesicle secretion, indicating new therapeutic potential of these anti-inflammatory drugs.

27 October 2021 in Nutrients
Verified
Journal Article
Open access
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ALAgnieszka Lejk
Agnieszka Lejk
JCJędrzej Chrzanowski
Jędrzej Chrzanowski
ACAdrianna Monika Cieślak
Adrianna Monika Cieślak
WFWojciech Fendler
Wojciech Fendler
MMMałgorzata Myśliwiec
Małgorzata Myśliwiec
Unhealthy eating habits are associated with obesity, metabolic syndrome, and increased insulin resistance in young patients with type 1 diabetes mellitus (T1DM), and may impact the possible benefit from dietary interventions on glycaemic control. This study determines how nutritional patterns influence the quality of dietary intervention with a 30% or 50% carbohydrate diet in terms of glycaemic control measured with continuous glucose monitoring (CGM). Eating habits were obtained with a frequency-of-consumption questionnaire (FFQ-6) before the diet assessment. Altogether, we collected CGM and FFQ-6 data from 30 children (16 boys and 14 girls aged 10–17 years) with T1DM subjected to two consecutive 3-day nutritional plans. From these, 23 patients met the CGM data quality criteria for further analysis. Furthermore, high accuracy achieved in training (95.65%) and V-fold cross-validation (81.67%) suggest a significant impact of food habits in response to introduced nutritional changes. Patients who consumed more vegetables or grains (>4 times per day), more wheat products (>once per day), fewer fats (<1.5 times per day), and ranked fruit juice as the most common selection in the drinks category achieved glycaemic control more often after the introduction of a 30% carbohydrate diet, as opposed to those with different dietary patterns, whose glycaemic control was negatively impacted after switching to this diet. Additionally, the 50% carbohydrate diet was safe for all patients in the context of glycaemic control.