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Items: 1 to 20 of 42


Reaction of Electrons with DNA: Radiation Damage to Radiosensitization.

Kumar A, Becker D, Adhikary A, Sevilla MD.

Int J Mol Sci. 2019 Aug 16;20(16). pii: E3998. doi: 10.3390/ijms20163998. Review.


Observation of dissociative quasi-free electron attachment to nucleoside via excited anion radical in solution.

Ma J, Kumar A, Muroya Y, Yamashita S, Sakurai T, Denisov SA, Sevilla MD, Adhikary A, Seki S, Mostafavi M.

Nat Commun. 2019 Jan 9;10(1):102. doi: 10.1038/s41467-018-08005-z.


Electron-Mediated Aminyl and Iminyl Radicals from C5 Azido-Modified Pyrimidine Nucleosides Augment Radiation Damage to Cancer Cells.

Wen Z, Peng J, Tuttle PR, Ren Y, Garcia C, Debnath D, Rishi S, Hanson C, Ward S, Kumar A, Liu Y, Zhao W, Glazer PM, Liu Y, Sevilla MD, Adhikary A, Wnuk SF.

Org Lett. 2018 Dec 7;20(23):7400-7404. doi: 10.1021/acs.orglett.8b03035. Epub 2018 Nov 20.


Ultrafast Electron Attachment and Hole Transfer Following Ionizing Radiation of Aqueous Uridine Monophosphate.

Ma J, Denisov SA, Marignier JL, Pernot P, Adhikary A, Seki S, Mostafavi M.

J Phys Chem Lett. 2018 Sep 6;9(17):5105-5109. doi: 10.1021/acs.jpclett.8b02170. Epub 2018 Aug 24.


Direct observation of the oxidation of DNA bases by phosphate radicals formed under radiation: a model of the backbone-to-base hole transfer.

Ma J, Marignier JL, Pernot P, Houée-Levin C, Kumar A, Sevilla MD, Adhikary A, Mostafavi M.

Phys Chem Chem Phys. 2018 May 30;20(21):14927-14937. doi: 10.1039/c8cp00352a.


Reactivity of prehydrated electrons toward nucleobases and nucleotides in aqueous solution.

Ma J, Wang F, Denisov SA, Adhikary A, Mostafavi M.

Sci Adv. 2017 Dec 15;3(12):e1701669. doi: 10.1126/sciadv.1701669. eCollection 2017 Dec.


Independent Photochemical Generation and Reactivity of Nitrogen-Centered Purine Nucleoside Radicals from Hydrazines.

Zheng L, Lin L, Qu K, Adhikary A, Sevilla MD, Greenberg MM.

Org Lett. 2017 Dec 1;19(23):6444-6447. doi: 10.1021/acs.orglett.7b03368. Epub 2017 Nov 10.


Modulating the Catalytic Activity of Cerium Oxide Nanoparticles with the Anion of the Precursor Salt.

Barkam S, Ortiz J, Saraf S, Eliason N, Mccormack R, Das S, Gupta A, Neal C, Petrovici A, Hanson C, Sevilla MD, Adhikary A, Seal S.

J Phys Chem C Nanomater Interfaces. 2017 Sep 14;121(36):20039-20050. doi: 10.1021/acs.jpcc.7b05725. Epub 2017 Aug 21.


Prehydrated One-Electron Attachment to Azido-Modified Pentofuranoses: Aminyl Radical Formation, Rapid H-Atom Transfer, and Subsequent Ring Opening.

Mudgal M, Rishi S, Lumpuy DA, Curran KA, Verley KL, Sobczak AJ, Dang TP, Sulimoff N, Kumar A, Sevilla MD, Wnuk SF, Adhikary A.

J Phys Chem B. 2017 May 18;121(19):4968-4980. doi: 10.1021/acs.jpcb.7b01838. Epub 2017 May 3.


Gamma and Ion-Beam Irradiation of DNA: Free Radical Mechanisms, Electron Effects, and Radiation Chemical Track Structure.

Sevilla MD, Becker D, Kumar A, Adhikary A.

Radiat Phys Chem Oxf Engl 1993. 2016 Nov;128:60-74. Epub 2016 Apr 30.


UV-Induced Adenine Radicals Induced in DNA A-Tracts: Spectral and Dynamical Characterization.

Banyasz A, Ketola TM, Muñoz-Losa A, Rishi S, Adhikary A, Sevilla MD, Martinez-Fernandez L, Improta R, Markovitsi D.

J Phys Chem Lett. 2016 Oct 6;7(19):3949-3953. Epub 2016 Sep 22.


Comment on "Proton Transfer of Guanine Radical Cations Studied by Time-Resolved Resonance Raman Spectroscopy Combined with Pulse Radiolysis".

Sevilla MD, Kumar A, Adhikary A.

J Phys Chem B. 2016 Mar 24;120(11):2984-6; discussion 2987-9. doi: 10.1021/acs.jpcb.5b12607. Epub 2016 Mar 11. No abstract available.


Do Solvated Electrons (e(aq)⁻) Reduce DNA Bases? A Gaussian 4 and Density Functional Theory-Molecular Dynamics Study.

Kumar A, Adhikary A, Shamoun L, Sevilla MD.

J Phys Chem B. 2016 Mar 10;120(9):2115-23. doi: 10.1021/acs.jpcb.5b11269. Epub 2016 Feb 23.


π-Radical to σ-Radical Tautomerization in One-Electron-Oxidized 1-Methylcytosine and Its Analogs.

Adhikary A, Kumar A, Bishop CT, Wiegand TJ, Hindi RM, Adhikary A, Sevilla MD.

J Phys Chem B. 2015 Sep 3;119(35):11496-505. doi: 10.1021/acs.jpcb.5b05162. Epub 2015 Aug 13.


5-Thiocyanato-2'-deoxyuridine as a possible radiosensitizer: electron-induced formation of uracil-C5-thiyl radical and its dimerization.

Zdrowowicz M, Chomicz L, Żyndul M, Wityk P, Rak J, Wiegand TJ, Hanson CG, Adhikary A, Sevilla MD.

Phys Chem Chem Phys. 2015 Jul 14;17(26):16907-16. doi: 10.1039/c5cp02081f.


An ESR and DFT study of hydration of the 2'-deoxyuridine-5-yl radical: a possible hydroxyl radical intermediate.

Chomicz L, Petrovici A, Archbold I, Adhikary A, Kumar A, Sevilla MD, Rak J.

Chem Commun (Camb). 2014 Dec 4;50(93):14605-8. doi: 10.1039/c4cc07089e.


One-electron oxidation of gemcitabine and analogs: mechanism of formation of C3' and C2' sugar radicals.

Adhikary A, Kumar A, Rayala R, Hindi RM, Adhikary A, Wnuk SF, Sevilla MD.

J Am Chem Soc. 2014 Nov 5;136(44):15646-53. doi: 10.1021/ja5083156. Epub 2014 Oct 23.


Presolvated electron reactions with methyl acetoacetate: electron localization, proton-deuteron exchange, and H-atom abstraction.

Petrovici A, Adhikary A, Kumar A, Sevilla MD.

Molecules. 2014 Sep 1;19(9):13486-97. doi: 10.3390/molecules190913486.


Introduction to Clemens von Sonntag memorial issue.

Adhikary A, O'Neill P, Cadet J.

Int J Radiat Biol. 2014 Jun;90(6):415. doi: 10.3109/09553002.2014.910967. No abstract available.


Reactions of 5-methylcytosine cation radicals in DNA and model systems: thermal deprotonation from the 5-methyl group vs. excited state deprotonation from sugar.

Adhikary A, Kumar A, Palmer BJ, Todd AD, Heizer AN, Sevilla MD.

Int J Radiat Biol. 2014 Jun;90(6):433-45. doi: 10.3109/09553002.2014.884293. Epub 2014 Feb 10.

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