Results 111 to 120 of about 61,437 (248)

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

open access: yesEnvironmental 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   +14 more
wiley   +1 more source

DNA topoisomerase inhibitors: biflavonoids from Ouratea species

open access: yesBrazilian Journal of Medical and Biological Research, 2002
Topoisomerase inhibitors are agents with anticancer activity. 7"-O-Methyl-agathisflavone (I) and amentoflavone (II) are biflavonoids and were isolated from the Brazilian plants Ouratea hexasperma and O. semiserrata, respectively.
N.F. Grynberg   +6 more
doaj   +1 more source

Synthetic Inhibitors of DNA Topoisomerase I and II.

open access: yesChemical and Pharmaceutical Bulletin, 1999
A new type of synthetic inhibitor of DNA topoisomerase I and II was examined and several of these derivatives exhibited strong dual activity against these enzymes. This series of compounds showed high cytotoxic activities against cancer cells, but only a limited number of compounds showed any noticeable activity in an in vivo test against murine P388 ...
H, Katayama   +4 more
openaire   +3 more sources

Associations Between GLP‐1 Receptor Agonists and Alopecia: A Multi‐Centre Retrospective Analysis and Public Interest Trends

open access: yesJEADV Clinical Practice, EarlyView.
ABSTRACT Background There is a growing body of literature suggesting that GLP‐1 receptor agonists (GLP‐1RAs) may be associated with hair loss; however, primary literature is sparse. Additionally, it is not well‐established which types of hair loss may be associated with GLP‐1RA use. Objectives This study aims to assess associations between GLP‐1RAs and
Lauren M. Ching   +2 more
wiley   +1 more source

Ataxia-Telangiectasia Mutated and the Mre11-Rad50-NBS1 Complex:Promising Targets for Radiosensitization [PDF]

open access: yes, 2012
Radiotherapy plays a central part in cancer treatment, and use of radiosensitizing agents can greatly enhance this modality. Although studies have shown that several chemotherapeutic agents have the potential to increase the radiosensitivity of tumor ...
Fujiwara, Toshiyoshi   +2 more
core   +1 more source

Phytochemical‐Based Strategies for Lung Cancer: Clinical Insights Into Pleiotropic Molecular Signaling and Therapeutic Roles

open access: yesPhytotherapy Research, EarlyView.
Lung cancer (LC) remains the leading cause of global cancer‐related death. Phytochemicals from medicinal plants are increasingly being considered as potential LC treatment agents due to their multi‐targeted action, safety, and accessibility. These have anticancer properties by regulating key molecular signaling pathways.
Md. Rezaul Islam   +14 more
wiley   +1 more source

The application of click chemistry in the synthesis of agents with anticancer activity

open access: yesDrug Design, Development and Therapy, 2015
Nan Ma,1–3 Ying Wang,3 Bing-Xin Zhao,3 Wen-Cai Ye,1,3 Sheng Jiang2 1Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 2Laboratory of Medicinal Chemistry, Guangzhou Institute of Biomedicine and Health ...
Ma N, Wang Y, Zhao BX, Ye WC, Jiang S
doaj  

Preclinical Results of Camptothecin-Polymer Conjugate (IT-101) in Multiple Human Lymphoma Xenograft Models [PDF]

open access: yes, 2009
Purpose: Camptothecin (CPT) has potent broad-spectrum antitumor activity by inhibiting type I DNA topoisomerase (DNA topo I). It has not been used clinically because it is water-insoluble and highly toxic.
Colcher, David   +9 more
core   +1 more source

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