Results 121 to 130 of about 57,805 (348)

The effects of inspiratory muscle training in older adults [PDF]

, 2015
Purpose: Declining inspiratory muscle function and structure and systemic low-level inflammation and oxidative stress may contribute to morbidity and mortality during normal ageing.
Aznar-Lain, Belman, Borg, Bowling, Brooks, Bruunsgaard, Carey, Davis, DEAN E. MILLS, Dennis, Downey, Enright, Falaschetti, Febbraio, Freedman, Garcia-Rio, GRAHAM R. SHARPE, Greig, Ho, Huang, Huang, Illi, Jensen, Johnson, Johnson, Kharraz, Kregel, Kumar, Kyle, MICHAEL A. JOHNSON, Miller, Mills, Mills, Murphy, Phillips, Polkey, Ramirez-Sarmiento, Robertson, Romer, Romer, Takahashi, Tidball, Troosters, Washburn, Watsford, WILLIAM H. T. SMITH, Wolsk, YVONNE A. BARNETT   +47 more
core   +1 more source

Interpretation of in vitro concentration‐response data for risk assessment and regulatory decision‐making: Report from the 2022 IWGT quantitative analysis expert working group meeting

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Quantitative risk assessments of chemicals are routinely performed using in vivo data from rodents; however, there is growing recognition that non‐animal approaches can be human‐relevant alternatives. There is an urgent need to build confidence in non‐animal alternatives given the international support to reduce the use of animals in toxicity ...
Marc A. Beal, Guangchao Chen, Kerry L. Dearfield, Min Gi, Bhaskar Gollapudi, Robert H. Heflich, Katsuyoshi Horibata, Alexandra S. Long, David P. Lovell, Barbara L. Parsons, Stefan Pfuhler, John Wills, Andreas Zeller, George Johnson, Paul A. White   +14 more
wiley   +1 more source

Analysis of cellular responses of macrophages to zinc ions and zinc oxide nanoparticles: a combined targeted and proteomic approach [PDF]

, 2014
Two different zinc oxide nanoparticles, as well as zinc ions, are used to study the cellular responses of the RAW 264 macrophage cell line. A proteomic screen is used to provide a wide view of the molecular effects of zinc, and the most prominent results
Armand, Lucie, Aude-Garcia, Catherine, Carrière, Marie, Collin-Faure, Véronique, Diemer, Hélène, Gerdil, Adèle, Habert, Aurélie, Hanau, Daniel, Herlin, Nathalie, Proamer, Fabienne, Rabilloud, Thierry, Strub, Jean-Marc, Triboulet, Sarah, Van Dorsselaer, Alain   +13 more
core   +4 more sources

Severity of effect considerations regarding the use of mutation as a toxicological endpoint for risk assessment: A report from the 8th International Workshop on Genotoxicity Testing (IWGT)

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Exposure levels without appreciable human health risk may be determined by dividing a point of departure on a dose–response curve (e.g., benchmark dose) by a composite adjustment factor (AF). An “effect severity” AF (ESAF) is employed in some regulatory contexts.
Barbara L. Parsons, Marc A. Beal, Kerry L. Dearfield, George R. Douglas, Min Gi, B. Bhaskar Gollapudi, Robert H. Heflich, Katsuyoshi Horibata, Michelle Kenyon, Alexandra S. Long, David P. Lovell, Anthony M. Lynch, Meagan B. Myers, Stefan Pfuhler, Alisa Vespa, Andreas Zeller, George E. Johnson, Paul A. White   +17 more
wiley   +1 more source

Detection of Hypoxia in Human Brain Tumor Xenografts Using a Modified Comet Assay

Neoplasia: An International Journal for Oncology Research, 2003
We used the standard comet assay successfully to generate in vitro dose-response curves under oxic and hypoxic conditions. We then made mixtures of cells that had been irradiated with 3 and 9 Gy of X-rays to simulate two subpopulations in a tumor, but ...
Jingli Wang, Jack Klem, Jan B. Wyrick, Tomoko Ozawa, Erin Cunningham, Jay Golinveaux, Max J. Allen, Kathleen R. Lamborn, Dennis F. Deen   +8 more
doaj   +1 more source

METHYLSENSITIVE COMET ASSAY: ANALYSIS OF DNA METHYLATION LEVEL IN GLIOBLASTOMA T98G CELL LINE

, 2023
K. S. Afanasieva, K. A. Svyrydova
openalex   +2 more sources

Human THO–Sin3A interaction reveals new mechanisms to prevent R-loops that cause genome instability [PDF]

, 2017
R-loops, formed by co-transcriptional DNA–RNA hybrids and a displaced DNA single strand (ssDNA), fulfill certain positive regulatory roles but are also a source of genomic instability.
Aguilera López, Andrés, Bayona Feliu, Aleix, Luna Varo, Rosa María, Pérez Calero, Carmen, Salas Armenteros, Irene, Tumini, Emanuela   +5 more
core   +1 more source

Evaluation of the standard battery of in vitro genotoxicity tests to predict in vivo genotoxicity through mathematical modeling: A report from the 8th International Workshop on Genotoxicity Testing

Environmental and Molecular Mutagenesis, EarlyView.
Abstract In human health risk assessment of chemicals and pharmaceuticals, identification of genotoxicity hazard usually starts with a standard battery of in vitro genotoxicity tests, which is needed to cover all genotoxicity endpoints. The individual tests included in the battery are not designed to pick up all endpoints.
Mirjam Luijten, Jan van Benthem, Takeshi Morita, Raffaella Corvi, Patricia A. Escobar, Yurika Fujita, Jennifer Hemmerich, Naveed Honarvar, David Kirkland, Naoki Koyama, David P. Lovell, Miriam Mathea, Andrew Williams, Stephen Dertinger, Stefan Pfuhler, Jeroen L. A. Pennings   +15 more
wiley   +1 more source

The application of comet assay in monitoring of the immunosuppression level in a patient with toxic epidermal necrolysis: A case report

Burns Open, 2017
Toxic epidermal necrolysis (TEN) represents the most serious affection within the SCARs group (Severe Cutaneous Adverse Reactions). It is an autoimmune disease manifested by extensive epidermal and mucosal exfoliation.
B. Lipový, M. Matejovičová, H. Řihová, D. Štikarovská, L. Novotná, M. Hlaváčová, H. Paulová, I. Suchánek, P. Brychta   +8 more
doaj   +1 more source

Genotoxicity of nitroso compounds and sodium dichromate in a model combining organ cultures of human nasal epithelia and the comet assay [PDF]

, 2001
Genotoxic effects of xenobiotics are a possible step in tumor initiation in the mucosa of the upper aerodigestive tract. Using the comet assay, detecting genotoxicity in human tissue has been restricted to single incubations in vitro, but in vivo most ...
Bergner, Albrecht, Gamarra, Fernando, Harréus, Ulrich A., Huber, Rudolf M., Juchhoff, Jutta, Kastenbauer, Ernst R., Kleinsasser, Norbert H., Wallner, Barbara C.   +7 more
core   +1 more source