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G. Szewczyk · SciRah

Researcher profile · Semantic Scholar

G. Szewczyk

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G. Szewczyk — researcher profile on SciRah

h-index: 20
Works: 60
Citations: 1,627

Most-cited papers

Neuromelanin can protect against iron‐mediated oxidative damage in system modeling iron overload of brain aging and Parkinson’s disease
L. Zecca, L. Casella, A. Albertini, C. Bellei +6 more
2008Journal of Neurochemistry214 citations Open access
Semantic Scholar
Potassium Iodide Potentiates Broad-Spectrum Antimicrobial Photodynamic Inactivation Using Photofrin
Li-Yi Huang, G. Szewczyk, T. Sarna, Michael R Hamblin
2017ACS Infectious Diseases136 citations Open access
Semantic Scholar
Photocatalytic generation of oxygen radicals by the water-soluble bacteriochlorophyll derivative WST11, noncovalently bound to serum albumin.
I. Ashur, Ruth Goldschmidt, I. Pinkas, Y. Salomon +3 more
2009Journal of Physical Chemistry A131 citations
Semantic Scholar
Potassium Iodide Potentiates Antimicrobial Photodynamic Inactivation Mediated by Rose Bengal in In Vitro and In Vivo Studies
X. Wen, Xiaoshen Zhang, G. Szewczyk, A. El-Hussein +3 more
2017Antimicrobial Agents and Chemotherapy119 citations Open access
Semantic Scholar
Imidazoacridinone-dependent lysosomal photodestruction: a pharmacological Trojan horse approach to eradicate multidrug-resistant cancers
Y. Adar, M. Stark, EE Bram, P. Nowak-Sliwinska +6 more
2012Cell Death and Disease101 citations Open access
Semantic Scholar
Antimicrobial photodynamic therapy with fulleropyrrolidine: photoinactivation mechanism of Staphylococcus aureus, in vitro and in vivo studies
M. Grinholc, J. Nakonieczna, G. Fila, A. Taraszkiewicz +5 more
2015Applied Microbiology and Biotechnology90 citations Open access
Semantic Scholar
Effects of Photodegradation on the Physical and Antioxidant Properties of Melanosomes Isolated from Retinal Pigment Epithelium
M. Zarȩba, G. Szewczyk, T. Sarna, L. Hong +3 more
2006Photochemistry and Photobiology82 citations Open access
Semantic Scholar
Aerobic photoreactivity of synthetic eumelanins and pheomelanins: generation of singlet oxygen and superoxide anion
G. Szewczyk, A. Żądło, M. Sarna, S. Ito +2 more
2016Pigment Cell & Melanoma Research67 citations Open access
Semantic Scholar
New insight into singlet oxygen generation at surface modified nanocrystalline TiO2--the effect of near-infrared irradiation.
Marta Buchalska, Przemysław Labuz, Ł. Bujak, G. Szewczyk +3 more
2013Dalton Transactions65 citations Open access
Semantic Scholar
Zinc‐induced Structural Effects Enhance Oxygen Consumption and Superoxide Generation in Synthetic Pheomelanins on UVA/Visible Light Irradiation †
L. Panzella, G. Szewczyk, M. d’Ischia, A. Napolitano +1 more
2010Photochemistry and Photobiology51 citations
Semantic Scholar
Roles of reactive oxygen species in UVA‐induced oxidation of 5,6‐dihydroxyindole‐2‐carboxylic acid‐melanin as studied by differential spectrophotometric method
S. Ito, Marina Kikuta, Shota Koike, G. Szewczyk +4 more
2016Pigment Cell & Melanoma Research46 citations Open access
Semantic Scholar
Developing [60]Fullerene Nanomaterials for Better Photodynamic Treatment of Non-Melanoma Skin Cancers.
M. Serda, G. Szewczyk, Olga I Krzysztynska-Kuleta, Julia Korzuch +3 more
2020ACS Biomaterials Science & Engineering32 citations Open access
Semantic Scholar
Photodynamic Inactivation of Candida albicans with Imidazoacridinones: Influence of Irradiance, Photosensitizer Uptake and Reactive Oxygen Species Generation
A. Taraszkiewicz, G. Szewczyk, T. Sarna, K. Bielawski +1 more
2015PLoS ONE30 citations Open access
Semantic Scholar
Photobleaching of Melanosomes from Retinal Pigment Epithelium: II. Effects on the Response of Living Cells to Photic Stress
M. Zarȩba, T. Sarna, G. Szewczyk, J. Burke
2007Photochemistry and Photobiology29 citations Open access
Semantic Scholar
Lipofuscin-mediated photic stress inhibits phagocytic activity of ARPE-19 cells; effect of donors’ age and antioxidants
Magdalena M. Olchawa, Justyna Furso, G. Szewczyk, T. Sarna
2017Free radical research27 citations Open access
Semantic Scholar
Photobleaching of pheomelanin increases its phototoxic potential: Physicochemical studies of synthetic pheomelanin subjected to aerobic photolysis
A. Żądło, G. Szewczyk, M. Sarna, Theodore G. Camenisch +6 more
2018Pigment Cell & Melanoma Research25 citations Open access
Semantic Scholar
Synthesis, spectroscopic properties and interaction with a liposomal membrane of a novel iodinated magnesium phthalocyanine
Lukasz Lapok, Małgorzata Cyza, Arkadiusz Gut, M. Kępczyński +3 more
201425 citations Open access
Semantic Scholar
Synthesis, structural, spectroscopic, computational and cytotoxic studies of BODIPY dyes
M. Laine, N. Barbosa, A. Kochel, B. Osiecka +5 more
201724 citations Open access
Semantic Scholar
The effect of aging and antioxidants on photoreactivity and phototoxicity of human melanosomes: An in vitro study
Magdalena M. Olchawa, G. Szewczyk, A. Żądło, Olga I Krzysztynska-Kuleta +1 more
2020Pigment Cell & Melanoma Research21 citations Open access
Semantic Scholar
Changes in production of reactive oxygen species in illuminated thylakoids isolated during development and senescence of barley.
Ivan Jajić, T. Sarna, G. Szewczyk, K. Strzałka
2015Journal of plant physiology21 citations Open access
Semantic Scholar
Removal of RPE lipofuscin results in rescue from retinal degeneration in a mouse model of advanced Stargardt disease: Role of reactive oxygen species.
Yuan Fang, Tatjana Taubitz, A. Tschulakow, P. Heiduschka +7 more
2022Free Radical Biology & Medicine20 citations Open access
Semantic Scholar
A [60]fullerene nanoconjugate with gemcitabine: synthesis, biophysical properties and biological evaluation for treating pancreatic cancer
Paweł Nalepa, Robert Gawecki, G. Szewczyk, K. Balin +6 more
2020Cancer nanotechnology20 citations Open access
Semantic Scholar
Inhibition of phagocytic activity of ARPE-19 cells by free radical mediated oxidative stress
Magdalena M. Olchawa, A. Pilat, G. Szewczyk, T. Sarna
2016Free radical research20 citations Open access
Semantic Scholar
Photoaging of retinal pigment epithelial melanosomes: The effect of photobleaching on morphology and reactivity of the pigment granules.
A. Żądło, G. Szewczyk, M. Sarna, A. Kozińska +3 more
2016Free Radical Biology & Medicine20 citations Open access
Semantic Scholar
Generation of singlet oxygen inside living cells: correlation between phosphorescence decay lifetime, localization and outcome of photodynamic action
G. Szewczyk, Krystian T Mokrzynski, Tadeusz Sarna
2024Photochemical and Photobiological Sciences19 citations Open access
Semantic Scholar
Gallium Mesoporphyrin IX-Mediated Photodestruction: A Pharmacological Trojan Horse Strategy To Eliminate Multidrug-Resistant Staphylococcus aureus
K. Michalska, M. Rychłowski, Martyna Krupińska, G. Szewczyk +2 more
2022Molecular Pharmaceutics18 citations Open access
Semantic Scholar
Amphiphilic tetracationic porphyrins are exceptionally active antimicrobial photosensitizers: in vitro and in vivo studies with the free-base and Pd-chelate.
Weijun Xuan, Li-Yi Huang, Yu-Guang Wang, Xiaoqing Hu +7 more
2019Journal of Biophotonics18 citations Open access
Semantic Scholar
Sub‐lethal Photodynamic Damage to ARPE‐19 Cells Transiently Inhibits Their Phagocytic Activity †
Magdalena M. Olchawa, G. Szewczyk, M. Zarȩba, A. Pilat +3 more
2010Photochemistry and Photobiology18 citations
Semantic Scholar
The effect of oxidative degradation of Dopa‐melanin on its basic physicochemical properties and photoreactivity
Krystian T Mokrzynski, A. Żądło, G. Szewczyk, M. Sarna +4 more
2024Pigment Cell & Melanoma Research16 citations Open access
Semantic Scholar
Sodium Nitrite Potentiates Antimicrobial Photodynamic Inactivation: Possible Involvement of Peroxynitrate.
Ying-Ying Huang, P. Rajda, G. Szewczyk, Brijesh Bhayana +3 more
2019Photochemical and Photobiological Sciences15 citations Open access
Semantic Scholar
Photoactivated Gallium Porphyrin Reduces Staphylococcus aureus Colonization on the Skin and Suppresses Its Ability to Produce Enterotoxin C and TSST-1
Klaudia Szymczak, G. Szewczyk, M. Rychłowski, T. Sarna +3 more
2023Molecular Pharmaceutics13 citations Open access
Semantic Scholar
The Effect of Antioxidants on Photoreactivity and Phototoxic Potential of RPE Melanolipofuscin Granules from Human Donors of Different Age
Magdalena M. Olchawa, G. Szewczyk, A. Żądło, M. Sarna +2 more
2020Antioxidants13 citations Open access
Semantic Scholar
Farnesol potentiates photodynamic inactivation of Staphylococcus aureus with the use of red light-activated porphyrin TMPyP.
Monika Kossakowska-Zwierucho, G. Szewczyk, T. Sarna, J. Nakonieczna
2020Journal of Photochemistry and Photobiology. B: Biology13 citations Open access
Semantic Scholar
Photoreactivity of polycyclic aromatic hydrocarbons (PAHs) and its mechanisms of phototoxicity against human immortalized keratinocytes (HaCaT).
Krystian T Mokrzynski, G. Szewczyk
2024Science of the Total Environment12 citations Open access
Semantic Scholar
Uncovering nanotoxicity of a water-soluble and red-fluorescent [70]fullerene nanomaterial.
Dominik Dreszer, G. Szewczyk, M. Szubka, A. Maroń +6 more
2023Science of the Total Environment11 citations Open access
Semantic Scholar
Photoreactivity of Bis-retinoid A2E Complexed with a Model Protein in Selected Model Systems
Justyna Furso, A. Żądło, G. Szewczyk, T. Sarna
2020Cell Biochemistry and Biophysics11 citations Open access
Semantic Scholar
The (un)known issue with using rose bengal as a standard of singlet oxygen photoproduction
Krystian T Mokrzynski, G. Szewczyk
2024Photochemistry and Photobiology9 citations Open access
Semantic Scholar
Benzo[A]Pyrene and Benzo[E]Pyrene: Photoreactivity and Phototoxicity toward Human Keratinocytes
Krystian T Mokrzynski, G. Szewczyk, T. Sarna
2022Photochemistry and Photobiology9 citations Open access
Semantic Scholar
SuperDopa (SD), SuperDopa amide (SDA) and Thioredoxin-mimetic peptides protect ARPE-19 cells from photic- and non-photic stress
Magdalena M. Olchawa, G. Szewczyk, Marva Lachish, Tadeusz Sarna +1 more
2024Journal of Photochemistry and Photobiology6 citations Open access
Semantic Scholar
Arduino-based light source used to demonstrate mixing of colors and as a simple system for luminescence observations
J. Bazak, G. Szewczyk
2019The Physical Educator5 citations Open access
Semantic Scholar
The Dynamic Ciphers Â€“ New Concept Of Long-Term Content Protecting
G. Szewczyk
20085 citations Open access
Semantic Scholar
Physicochemical evidence for oxidative modifications of human RPE melanin with aging and of bovine RPE melanin with in vitro photoaging
T. Sarna, A. Pilat, A. Żądło, S. Ito +6 more
20131 citations
Semantic Scholar
Melanin and Oxidative Reactions
T. Sarna, G. Szewczyk, A. Żądło
20081 citations
Semantic Scholar
Characterizing excited triplet states of synthetic eumelanin and pheomelanin by the application of selected diene probes
Krystian T Mokrzynski, G. Szewczyk, Tadeusz Sarna
2026Scientific Reports0 citations Open access
Semantic Scholar
The Water-Soluble C 60 -Phtalocyanine Hybrid Nanomaterials for Photodynamic Cancer Therapy
Dominik Dreszer, M. Serda, Anna Mrozek-Wilczkiewicz, M. Szubka +1 more
2026ECS Meeting Abstracts0 citations
Semantic Scholar
Potassium iodide potentiates antimicrobial photodynamic inactivation mediated by Rose Bengal: in vitro and in vivo studies
Xiang Wen, Xiaoshen Zhang, G. Szewczyk, A. Elhussien +3 more
2018BiOS0 citations Open access
Semantic Scholar
The efficiency of melanin to photogenerate potentially toxic singlet oxygen significantly increases after partial photobleaching of the pigment
T. Sarna, Magdalena M. Olchawa, G. Szewczyk, A. Żądło +1 more
20180 citations
Semantic Scholar
Peer Review #1 of "Ultrastructural alterations in the retinal pigment epithelium and photoreceptors of a Stargardt patient and three Stargardt mouse models: indication for the central role of RPE melanin in oxidative stress (v0.1)"
Tatjana Taubitz, A. Tschulakow, M. Tikhonovich, B. Illing +425 more
20180 citations Open access
Semantic Scholar
BODIPY染料の合成,構造,分光学的,計算的及び細胞毒性研究【Powered by NICT】
M. Laine, N. Barbosa, A. Kochel, B. Osiecka +5 more
20170 citations
Semantic Scholar
Inhibition of phagocytic activity of ARPE-19 cells induced by lipofuscin mediated photic stress - effects of donor’s age and antioxidants.
Magdalena M. Olchawa, Justyna Furso, G. Szewczyk, A. Pilat +1 more
20160 citations
Semantic Scholar

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T. Sarna×38
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T. Sarna — researcher profile on SciRah
A. Żądło×13
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A. Żądło — researcher profile on SciRah
M. Sarna×8
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M. Sarna — researcher profile on SciRah
Magdalena M. Olchawa×8
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Magdalena M. Olchawa — researcher profile on SciRah

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Krystian T Mokrzynski×6

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M. Zarȩba — researcher profile on SciRah

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Tadeusz Sarna×5

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