Norma Ybarra, McGill University

Research

Cancer

Latest papers

Reference radiation selection is confirmed as a significant source of relative biological effectiveness variation for neutrons.
International journal of radiation biology · 2026
Relative biological effectiveness of 31 meV thermal neutrons in peripheral blood lymphocytes.
Radiation protection dosimetry · 2025
Selective radiation-enhancing effects of a muscle-derived dipeptide in an orthotopic non-small cell lung cancer (NSCLC) xenograft mouse model.
International journal of radiation biology · 2025 · senior author

All 17 publications

Latest funding

Radio-selective effects of natural compounds, their effects on cell metabolism, and their role in the repair of radiation-induced damage.
NSERC · 2023 · Principal investigator
$12,500
Radio-selective effects of natural compounds, their effects on cell metabolism, and their role in the repair of radiation-induced damage.
NSERC · 2023 · Principal investigator
$56,000
Radio-selective effects of a natural occurring muscle-derived dipeptide in an orthotopic lung cancer rat model
CIHR · 2019 · Nominated PI
$60,000

All 3 grants and awards

17 publications.

01

Reference radiation selection is confirmed as a significant source of relative biological effectiveness variation for neutrons.

Paterson LC, Pecoskie S, Norton F, Ybarra N, Kildea J, Richardson RB

International journal of radiation biology2026

DOI: 10.1080/09553002.2025.2588396 PMID: 41368841

02

Relative biological effectiveness of 31 meV thermal neutrons in peripheral blood lymphocytes.

Paterson LC, Ali F, Naseri M, Perez Loureiro D, Festarini A, Stuart M, Boyer C, Rogge R, Costello C, Ybarra N, Kildea J, Richardson RB

Radiation protection dosimetry2025

DOI: 10.1093/rpd/ncae231 PMID: 40062825

03

Selective radiation-enhancing effects of a muscle-derived dipeptide in an orthotopic non-small cell lung cancer (NSCLC) xenograft mouse model.

Wang LM, Serban M, Arias O, Seuntjens J, Ybarra N

International journal of radiation biology2025Senior author

DOI: 10.1080/09553002.2025.2523294 PMID: 40608893

04

Single-cell DNA sequencing-a potential dosimetric tool.

Mathew F, Manalad J, Yeo J, Galarneau L, Ybarra N, Wang YC, Tonin PN, Ragoussis I, Kildea J

Radiation protection dosimetry2023

DOI: 10.1093/rpd/ncad055 PMID: 37819315

05

Validation of an orthotopic non-small cell lung cancer mouse model, with left or right tumor growths, to use in conformal radiotherapy studies.

Wang LM, Yadav R, Serban M, Arias O, Seuntjens J, Ybarra N

PloS one2023Senior author

DOI: 10.1371/journal.pone.0284282 PMID: 37053154

06

High-Accuracy Relative Biological Effectiveness Values Following Low-Dose Thermal Neutron Exposures Support Bimodal Quality Factor Response with Neutron Energy.

Paterson LC, Festarini A, Stuart M, Ali F, Costello C, Boyer C, Rogge R, Ybarra N, Kildea J, Richardson RB

International journal of molecular sciences2022

DOI: 10.3390/ijms23020878 PMID: 35055062

07

Comparison of quantitative and qualitative scoring approaches for radiation-induced pulmonary fibrosis as applied to a preliminary investigation into the efficacy of mesenchymal stem cell delivery methods in a rat model.

Wang LM, Jung S, Serban M, Chatterjee A, Lee S, Jeyaseelan K, El Naqa I, Seuntjens J, Ybarra N

BJR open2021Senior author

DOI: 10.1259/bjro.20210006 PMID: 34381940

08

Radio-selective effects of a natural occurring muscle-derived dipeptide in A549 and normal cell lines.

Ybarra N, Seuntjens J

Scientific reports2019First author

DOI: 10.1038/s41598-019-47944-5 PMID: 31395939

09

Fluorescence Endomicroscopy Imaging of Mesenchymal Stem Cells in the Rat Lung.

Perez JR, Ybarra N, Chagnon F, Lesur O, Seuntjens J, Naqa IE

Current protocols in stem cell biology2018

DOI: 10.1002/cpsc.52 PMID: 30040235

10

Image-Guided Fluorescence Endomicroscopy: From Macro- to Micro-Imaging of Radiation-Induced Pulmonary Fibrosis.

Perez JR, Ybarra N, Chagnon F, Serban M, Pare G, Lesur O, Seuntjens J, Naqa IE

Scientific reports2017

DOI: 10.1038/s41598-017-18070-x PMID: 29259252

Radio-selective effects of natural compounds, their effects on cell metabolism, and their role in the repair of radiation-induced damage.

Principal investigatorNSERC2023Discovery Launch Supplement

Principal investigators: Ybarra, Norma

$12,500

Radio-selective effects of natural compounds, their effects on cell metabolism, and their role in the repair of radiation-induced damage.

Principal investigatorNSERC2023Discovery Grants Program - Individual

Principal investigators: Ybarra, Norma

Keywords: antioxidant effects; cellular metabolism; DNA repair; nutraceuticals; radiation

$56,000

Radio-selective effects of a natural occurring muscle-derived dipeptide in an orthotopic lung cancer rat model

Nominated PICIHR2019CIHR - ICR / Cancer Research Society Partnership - Research Grants

Principal investigators: Ybarra, Norma

Keywords: Cancer

$60,000

From CIHR, NSERC and SSHRC funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998, including their latest published competition results.

Frequent collaborators

Medical Physics
Oncology
Médecine
Radiation Medicine
Medicine
Other

Co-authors at McGill University, colored by department. Thicker lines mean more shared papers; select anyone to open their profile and their own map.

Jan Seuntjens

Medical Physics

9 shared papers, latest 2023

Monica Serban

Radiation Medicine

2 shared papers, latest 2025

Ioannis Ragoussis

Medicine

1 shared papers, latest 2023

Write to this professor

A short, specific email works best. This draft uses one of their recent papers; replace the parts in brackets with your own details before sending.

Applying for

Paper to mentionMention their NSERC grant from 2023

Subject: Prospective PhD student: Cancer Dear Professor Ybarra, My name is [your name], and I am a [your current degree or role] at [your institution]. I am applying for a PhD position starting in [term and year]. I read your paper "Reference radiation selection is confirmed as a significant source of relative biological effectiveness variation for neutrons." (2026), and it connects closely to my own work on [your research topic]. [One or two sentences on what you did and what you learned.] I also saw your NSERC-funded project "Radio-selective effects of natural compounds, their effects on cell metabolism, and their role in the repair of radiation-induced damage." (2023), and I would be glad to contribute to work in that direction. Are you accepting new PhD students for [term and year]? I have attached my CV and transcripts, and I would be glad to talk at a time that suits you. Thank you for your time. Kind regards, [your name]

Norma Ybarra

Research

Latest papers

Latest funding

Reference radiation selection is confirmed as a significant source of relative biological effectiveness variation for neutrons.

Relative biological effectiveness of 31 meV thermal neutrons in peripheral blood lymphocytes.

Selective radiation-enhancing effects of a muscle-derived dipeptide in an orthotopic non-small cell lung cancer (NSCLC) xenograft mouse model.

Single-cell DNA sequencing-a potential dosimetric tool.

Validation of an orthotopic non-small cell lung cancer mouse model, with left or right tumor growths, to use in conformal radiotherapy studies.

High-Accuracy Relative Biological Effectiveness Values Following Low-Dose Thermal Neutron Exposures Support Bimodal Quality Factor Response with Neutron Energy.

Comparison of quantitative and qualitative scoring approaches for radiation-induced pulmonary fibrosis as applied to a preliminary investigation into the efficacy of mesenchymal stem cell delivery methods in a rat model.

Radio-selective effects of a natural occurring muscle-derived dipeptide in A549 and normal cell lines.

Fluorescence Endomicroscopy Imaging of Mesenchymal Stem Cells in the Rat Lung.

Image-Guided Fluorescence Endomicroscopy: From Macro- to Micro-Imaging of Radiation-Induced Pulmonary Fibrosis.

Radio-selective effects of natural compounds, their effects on cell metabolism, and their role in the repair of radiation-induced damage.

Radio-selective effects of natural compounds, their effects on cell metabolism, and their role in the repair of radiation-induced damage.

Radio-selective effects of a natural occurring muscle-derived dipeptide in an orthotopic lung cancer rat model

Frequent collaborators

Jan Seuntjens

Issam El Naqa

Olivier Lesur

Jan Seuntjens

Monica Serban

Ioannis Ragoussis

Norma Ybarra

Research

Latest papers

Latest funding

Reference radiation selection is confirmed as a significant source of relative biological effectiveness variation for neutrons.

Relative biological effectiveness of 31&#xa0;meV thermal neutrons in peripheral blood lymphocytes.

Selective radiation-enhancing effects of a muscle-derived dipeptide in an orthotopic non-small cell lung cancer (NSCLC) xenograft mouse model.

Single-cell DNA sequencing-a potential dosimetric tool.

Validation of an orthotopic non-small cell lung cancer mouse model, with left or right tumor growths, to use in conformal radiotherapy studies.

High-Accuracy Relative Biological Effectiveness Values Following Low-Dose Thermal Neutron Exposures Support Bimodal Quality Factor Response with Neutron Energy.

Comparison of quantitative and qualitative scoring approaches for radiation-induced pulmonary fibrosis as applied to a preliminary investigation into the efficacy of mesenchymal stem cell delivery methods in a rat model.

Radio-selective effects of a natural occurring muscle-derived dipeptide in A549 and normal cell lines.

Fluorescence Endomicroscopy Imaging of Mesenchymal Stem Cells in the Rat Lung.

Image-Guided Fluorescence Endomicroscopy: From Macro- to Micro-Imaging of Radiation-Induced Pulmonary Fibrosis.

Radio-selective effects of natural compounds, their effects on cell metabolism, and their role in the repair of radiation-induced damage.

Radio-selective effects of natural compounds, their effects on cell metabolism, and their role in the repair of radiation-induced damage.

Radio-selective effects of a natural occurring muscle-derived dipeptide in an orthotopic lung cancer rat model

Frequent collaborators

Jan Seuntjens

Issam El Naqa

Olivier Lesur

Jan Seuntjens

Monica Serban

Ioannis Ragoussis

Relative biological effectiveness of 31 meV thermal neutrons in peripheral blood lymphocytes.