AI Article Synopsis
- The Mouse Lymphoma Assay (MLA) Workgroup, consisting of global experts, met on September 9, 2005, to reach consensus on the 24-hour treatment protocol in genotoxicity testing.
- Recommendations were made regarding acceptable values for negative and positive controls, including mutant frequency and cloning efficiency.
- The Workgroup supported the inclusion of 24-hour treatments without S-9 in the MLA assay when shorter treatments yielded negative results, aligning with International Committee on Harmonization guidelines.
Article Abstract
The Mouse Lymphoma Assay (MLA) Workgroup of the International Workshop on Genotoxicity Testing (IWGT), comprised of experts from Japan, Europe and the United States, met on September 9, 2005, in San Francisco, CA, USA. This meeting of the MLA Workgroup was devoted to reaching a consensus on issues involved with 24-h treatment. Recommendations were made concerning the acceptable values for the negative/solvent control (mutant frequency, cloning efficiency and suspension growth) and the criteria to define an acceptable positive control response. Consensus was also reached concerning the use of the global evaluation factor (GEF) and appropriate statistical trend analysis to define positive and negative responses for the 24-h treatment. The Workgroup agreed to continue their support of the International Committee on Harmonization (ICH) recommendation that the MLA assay should include a 24-h treatment (without S-9) in those situations where the short treatment (3-4 h) gives negative results.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.mrgentox.2006.08.013 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effects of paclitaxel and methotrexate associated with cholesterol-rich nanoemulsions on ischemia-reperfusion injury after unilateral lung transplantation in rats.
Sci Rep
December 2024
Laboratorio de Pesquisa em Cirurgia Toracica, Departamento de Cardiopneumologia, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
Currently, the barrier to successful lung transplantation is ischemia and reperfusion injury, which can lead to the development of bronchiolitis obliterans. Paclitaxel and methotrexate are drugs known to inhibit cell proliferation and have anti-inflammatory effects, and the association of these drugs with cholesterol-rich nanoparticles has been shown to be beneficial in the treatment of other transplanted organs. Thirty-three male Sprague Dawley rats were divided into 3 groups: Basal group, no intervention; Control group, received only nanoparticles; Drug group, paclitaxel and methotrexate treatment.
View Article and Find Full Text PDFSynergistic effects of colistin-rifampin-based triple antimicrobial combination therapy against Carbapenem-resistant Pseudomonas aeruginosa: a time-kill assay.
J Antimicrob Chemother
December 2024
Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, South Korea.
Background: Our research aimed to investigate the potential of in vitro triple antimicrobial synergism against carbapenem-resistant Pseudomonas aeruginosa (CRPA) as a strategy to overcome antimicrobial resistance.
Methods: We used 12 CRPA blood isolates stocked in the Asian Bacterial Bank between 2016 and 2018. All isolates were tested by multi-locus sequencing and carbapenemase multiplex PCR.
Wound healing activity of green synthesized copper nanoparticles through cell proliferation-migration, antimicrobial effects, and nitric oxide triggering.
Arch Razi Inst
June 2024
Faculty of Pharmacy, Eastern Mediterranean University, Famagusta, Mersin 10, Turkey.
The present experimental study aimed to assess the wound healing and anti-inflammatory effects of green synthesized copper nanoparticles (CuNPs) by the methanol extract of (Boiss), as a plant with various pharmacological effects, such as anti-inflammatory and antimicrobial effects, in traditional and modern medicine. The precipitation approach was used for the green synthesis of CuNPs by mixing the methanol and copper sulfate solution. Cell viability and fibroblast proliferation assay were performed by MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide) assay.
View Article and Find Full Text PDFSex differences in the relationships between 24-h rest-activity patterns and plasma markers of Alzheimer's disease pathology.
Alzheimers Res Ther
December 2024
Faculty of Health, Medicine and Life Sciences, Mental Health and Neuroscience Research Institute, Alzheimer Centre Limburg, Maastricht University, Maastricht, The Netherlands.
Background: Although separate lines of research indicated a moderating role of sex in both sleep-wake disruption and in the interindividual vulnerability to Alzheimer's disease (AD)-related processes, the quantification of sex differences in the interplay between sleep-wake dysregulation and AD pathology remains critically overlooked. Here, we examined sex-specific associations between circadian rest-activity patterns and AD-related pathophysiological processes across the adult lifespan.
Methods: Ninety-two cognitively unimpaired adults (mean age = 59.
Effects of non-invasive or minimally invasive neuromodulation techniques on neurogenic lower urinary tract dysfunction after spinal cord injury: A network meta-analysis.
Arch Phys Med Rehabil
December 2024
Department of Rehabilitation, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China. Electronic address:
Objective: To assess the available evidence of non-invasive or minimally invasive neuromodulation therapies in improving urodynamic outcomes, voiding diaries, and quality of life in patients with neurogenic lower urinary tract dysfunction (NLUTD) after spinal cord injury (SCI).
Data Sources: A comprehensive search of 10 databases from inception until August 30, 2023 was conducted.
Study Selection: Randomized controlled trials (RCTs) assessing the effects of conventional treatment (CT) and CT combined with sham stimulation (SS), transcranial magnetic stimulation (TMS), sacral nerve magnetic stimulation (SNMS), TMS+SNMS, sacral pulsed electromagnetic field therapy (SPEMFT), sacral transcutaneous electrical nerve stimulation (STENS), sacral dermatomal transcutaneous electrical nerve stimulation (SDTENS), bladder & sacral transcutaneous electrical nerve stimulation (B&STENS), transcutaneous tibial nerve stimulation (TTNS), transcutaneous electrical acupoint stimulation (TEAS), pelvic floor electrical stimulation (PFES), or pelvic floor biofeedback therapy (PFBFBT) on postvoid residual volume (PVR), maximum cystometric capacity (MCC), number of voids per 24 h (V24), mean urine volume per micturition, (MUV), maximum urinary flow rate (Qmax), maximum detrusor pressure (MDP), maximum voiding volume (MVV), number of leakages per 24 h (L24), lower urinary tract symptoms (LUTS) score, and spinal cord injury-quality of life (SCI-QoL)score in patients with NLUTD after SCI were included.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!