Mariusz Niemczyk

Dr. Mariusz Niemczyk

orcid

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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25 September 2022 in Journal of Clinical Medicine
Verified
Journal Article
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Marcin Michał NowakMarcin Michał Nowak
Marcin Michał Nowak
MNMariusz Niemczyk
Mariusz Niemczyk
MFMichał Florczyk
Michał Florczyk
Marcin Kurzyna, MD, PhD, FESCMarcin Kurzyna, MD, PhD, FESC
Marcin Kurzyna, MD, PhD, FESC
LPLeszek Pączek
Leszek Pączek
Statins are lipid-lowering medications used for the prevention of cardiovascular disease (CVD), but the pleiotropic effects of statins might be beneficial in other chronic diseases. This meta-analysis investigated the association between statin use and mortality in different chronic conditions. Eligible studies were real-world studies that compared all-cause mortality over at least 12 months between propensity score-matched statin users and non-users. Overall, 54 studies were included: 21 in CVD, 6 in chronic kidney disease, 6 in chronic inflammatory diseases, 3 in cancer, and 18 in other diseases. The risk of all-cause mortality was significantly reduced in statin users (hazard ratio: 0.72, 95% confidence interval: 0.66–0.76). The reduction in mortality risk was similar in CVD studies (0.73, 0.66–0.76) and non-CVD studies (0.70, 0.67–0.79). There were no significant differences in the risk reduction between cohorts with different diseases (p = 0.179). The greatest mortality reduction was seen in studies from Asia (0.61, 0.61–0.73) and the lowest in studies from North America (0.78, 0.73–0.83) and Australia (0.78, 0.62–0.97). There was a significant heterogeneity (I2 = 95%, tau2 = 0.029, p < 0.01). In conclusion, statin use was associated with a significantly reduced risk of all-cause mortality in real-world cohorts with CVD and non-CVD.

11 December 2012 in Clinical Proteomics
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Journal Article
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MBMagdalena Bakun
Magdalena Bakun
MNMariusz Niemczyk
Mariusz Niemczyk
DDDominik Domanski
Dominik Domanski
RJRadosław Jaźwiec
Radosław Jaźwiec
APAnna Perzanowska
Anna Perzanowska
MDMichał Dadlez
Michał Dadlez
Background: Autosomal dominant polycystic kidney disease (ADPKD) is responsible for 10% of cases of the end stage renal disease. Early diagnosis, especially of potential fast progressors would be of benefit for efficient planning of therapy. Urine excreted proteome has become a promising field of the search for marker patterns of renal diseases including ADPKD. Up to now however, only the low molecular weight fraction of ADPKD proteomic fingerprint was studied. The aim of our study was to characterize the higher molecular weight fraction of urinary proteome of ADPKD population in comparison to healthy controls as a part of a general effort aiming at exhaustive characterization of human urine proteome in health and disease, preceding establishment of clinically useful disease marker panel. Results: We have analyzed the protein composition of urine retentate (>10 kDa cutoff) from 30 ADPKD patients and an appropriate healthy control group by means of a gel-free relative quantitation of a set of more than 1400 proteins. We have identified an ADPKD-characteristic footprint of 155 proteins significantly up- or downrepresented in the urine of ADPKD patients. We have found changes in proteins of complement system, apolipoproteins, serpins, several growth factors in addition to known collagens and extracellular matrix components. For a subset of these proteins we have confirmed the results using an alternative analytical technique. Conclusions: Obtained results provide basis for further characterization of pathomechanism underlying the observed differences and establishing the proteomic prognostic marker panel.

1 November 2007 in Transplantation Proceedings
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Journal Article
Closed access
GKG. Korczak-Kowalska
G. Korczak-Kowalska
PWP. Wierzbicki
P. Wierzbicki
KBK. Bocian
K. Bocian
DKD. Klosowska
D. Klosowska
MNMariusz Niemczyk
Mariusz Niemczyk
AGA. Górski
A. Górski

16 April 2024 in Journal of Clinical Medicine
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Journal Article
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Marcin Michał NowakMarcin Michał Nowak
Marcin Michał Nowak
MNMariusz Niemczyk
Mariusz Niemczyk
SGSławomir Gołębiewski
Sławomir Gołębiewski
LPLeszek Pączek
Leszek Pączek
Background: Obesity is a risk factor for many diseases, diagnosed by calculating body mass index (BMI). Methods: To find an association between BMI and mortality in adults, we searched PubMed for articles published in the 21st century. Our review included 82 original studies, comprising 2.7 million patients and 23.4 million patient years. Results: The meta-analysis showed a U-shaped relationship between BMI and all-cause mortality risk, with the lowest mortality in the BMI range of 25–30 kg/m2. Subgroup analysis showed a J-shaped relationship, with greater risk in the highest BMI range (>35 kg/m2). Among the elderly, BMI values <20 kg/m2 were associated with the highest risk. Among diabetic patients, a U-shaped relationship was noticed, again with the highest risk in the lowest (35 kg/m2). Among patients with cardiovascular disease, the risk increased with BMI values 35 kg/m2). Conclusions: Our results show that the lowest mortality is observed among patients with BMI 25–30 kg/m2. Reduction of body mass should not be a universal recommendation in clinical practice, but it should be individualized.

28 February 2013 in American Journal of Neuroradiology
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Journal Article
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MNMariusz Niemczyk
Mariusz Niemczyk
MGM. Gradzik
M. Gradzik
Stanisław NiemczykStanisław Niemczyk
Stanisław Niemczyk
MBM. Bujko
M. Bujko
MGM. Gołębiowski
M. Gołębiowski
LPLeszek Pączek
Leszek Pączek
BACKGROUND AND PURPOSE: ADPKD correlates with an increased frequency of ICANs, but universal screening for ICANs in patients with ADPKD is not currently recommended. The aim of our study was to determine which groups might benefit from screening by determining the prevalence of ICANs in the Polish ADPKD population and identifying any subgroups with an increased risk for ICANs. MATERIALS AND METHODS: Eighty-three adult, predialysis-phase patients with ADPKD underwent screening for ICANs with MRA of the brain. RESULTS: The prevalence of ICANs in the studied population was 16.9%, with 6% of the screened group requiring neurosurgical intervention. We also found that the frequency of ICANs increases with age, reaching 22.4% in patients older than 45 years. All diagnosed ICANs were small (< 9 mm) and were localized in the anterior circulation. In addition, MR imaging revealed arachnoid cysts in 4.8% of patients with ADPKD. CONCLUSIONS: We suggest that patients older than 45 years with ADPKD be considered as candidates for screening for ICANs, and we propose a clinical algorithm for this subgroup. However, we could not find risk factors for ICANs in younger patients with ADPKD.

2 June 2015 in Polish Journal of Radiology
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MGMonika Gradzik
Monika Gradzik
MNMariusz Niemczyk
Mariusz Niemczyk
MGMarek Golebiowski
Marek Golebiowski
LPLeszek Pączek
Leszek Pączek
Autosomal dominant polycystic kidney disease (ADPKD) is one of the most common genetic disorders caused by a single gene mutation. The disease usually manifests itself at the age of 30–40 years and is characterized by formation of renal cy...