BALB/c mice (120/sex/dose) were given 0, 5, 9, 18, 35, 70 or 140 ppm of 3,3'-dimethylbenzidine dihydrochloride in their drinking-water and killed after 13, 26, 39, 52, 78 or 116 wk. Full histopathological evaluations were performed on all animals that were found dead or moribund, or that were killed on schedule. Fatal lung alveolar cell neoplasms began to appear in males receiving 140 ppm at 78 wk and there was a significant dose-related decrease in the time-to-death from this cause. There were no significant dose-related trends for this neoplasm in females, nor were there treatment-related effects on body weight, water consumption or other lesions in either sex. This is the first report of a neoplastic response to 3,3'-dimethylbenzidine dihydrochloride in mice.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0278-6915(89)90111-7 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Development of a unique crosslinked glycosaminoglycan for soft tissue repair: Treatment of interstitial cystitis/bladder pain syndrome.
PLoS One
January 2025
Glycologix, Inc., 100 Cummings Center, Beverly, Massachusetts, United States of America.
Chemical modification of naturally derived glycosaminoglycans (GAGs) expands their potential utility for applications in soft tissue repair and regenerative medicine. Here we report the preparation of a novel crosslinked chondroitin sulfate (~200 to 2000 kilodaltons) that is both soluble in aqueous solution and microfilterable. We refer to these materials as "SuperGAGs.
View Article and Find Full Text PDFNotch dimerization provides robustness against environmental insults and is required for vascular integrity.
PLoS One
January 2025
Division of Developmental Biology, Department of Pediatrics, University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America.
The Notch intracellular domain (NICD) regulates gene expression during development and homeostasis in a transcription factor complex that binds DNA either as monomer, or cooperatively as dimers. Mice expressing Notch dimerization-deficient (NDD) alleles of Notch1 and Notch2 have defects in multiple tissues that are sensitized to environmental insults. Here, we report that cardiac phenotypes and DSS (Dextran Sodium Sulfate) sensitivity in NDD mice can be ameliorated by housing mice under hypo-allergenic conditions (food/bedding).
View Article and Find Full Text PDFEffectiveness and Safety of Liposomal Ferric Pyrophosphate vs. Ferrous Sulfate for Intermittent Iron Prophylaxis in Children Aged 6-59 months: A Randomized Controlled Trial.
Indian J Pediatr
January 2025
Department of Community Medicine, KAHER's Jawaharlal Nehru Medical College, Belagavi, Karnataka, India.
Paracetamol, its metabolites, and their transfer between maternal circulation and fetal brain in mono- and combination therapies.
Pharmacol Rep
January 2025
Department of Neuroscience, School of Translational Medicine, Monash University, Melbourne, VIC, 3004, Australia.
Background: Due to its availability and perceived safety, paracetamol is recommended even during pregnancy and for neonates. It is used frequently alone or in combination with other drugs required for the treatment of various chronic conditions. The aim of this study was to investigate potential effects of drug interactions on paracetamol metabolism and its placental transfer and entry into the developing brain.
View Article and Find Full Text PDFEvaluation method for proteoglycans using near-infrared spectroscopy.
Anal Sci
January 2025
Chitose Institute of Science and Technology, Chitose, Hokkaido, 066-8655, Japan.
Cartilage is a connective tissue composed of mainly water, collagen (COL) and proteoglycans (PGs) including chondroitin sulfate (CS). Near-infrared (NIR) spectroscopy is adequate for examination of soft and hard tissues with large amount of water non-destructively and non-invasively. We measured tablets containing CS and COL using NIR spectroscopy to develop an evaluation method for PGs in cartilage non-destructively and non-invasively.
View Article and Find Full Text PDFWant 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!