Cystic fibrosis (CF) is a single-gene disease caused by mutations in the CFTR gene, which result in disrupted chloride secretions with inspissated mucous secretions by exocrine glands. Nick-end labelling was used to assess DNA fragmentation in 14 CF and 24 control duodenal samples, and in two CF and two control lung tissues. In CF small intestine median 46% (range: 30-82) villus enterocytes show DNA fragmentation (vs. 3% (range: 1-7) in controls P < 0.001) and median 37.5% (range: 23-79) crypt enterocytes show Ki67 antigen (P < 0.001). In CF airways 57% (range: 54-70) of epithelial cells show DNA fragmentation. Inappropriate high DNA fragmentation is a feature of various CF epithelia. This could have great impact in understanding the mechanisms leading to disease.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0014-5793(97)00347-5 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Screening of bioactive components in dried oleo-gum resin and assessment of its protective function against cadmium-induced oxidative damage, genotoxicity, and cytotoxicity in rats.
Toxicol Rep
June 2025
Food Toxicology & Contaminants Dept., National Research Centre, Dokki, Cairo, Egypt.
Cadmium (Cd) is among the most ecologically harmful heavy metals. The purpose of this work was to identify the biologically active components in dried oleo-resin-gum of extract (FAE) and assess their preventive efficacy against oxidative damage caused by Cd in rats. The biologically active components were identified using HPLC and GC-MS.
View Article and Find Full Text PDFThe effect of consecutive ejaculation on the sperm parameters in the oligo-astheno-teratozoospermia (OAT) men.
Zygote
January 2025
Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
Recently, the World Health Organization recommendation for abstinence time for semen analysis has been challenged in some studies and many of them have supported the advantages of a second short abstinence ejaculation. More evidence is needed to approve this for clinical use. This study aimed to compare the average routine abstinence time (2-7 days) with the short time (1-2 h) on sperm quality based on functional parameters in a population of oligo-astheno-teratozoospermia (OAT) men.
View Article and Find Full Text PDFEffect of in vitro exposure of first-line antiretrovirals on healthy human spermatozoa on kinematics and motility.
Int Urol Nephrol
January 2025
Department of Urology, Faculty of Health Sciences, Steve Biko Academic Hospital, University of Pretoria, Pretoria, South Africa.
Purpose: Contemporary antiretroviral (ARV) medications are used by millions of men for HIV treatment worldwide. Limited data exist on their direct effect on sperm motility. This pilot study hypothesizes that in vitro exposure to ARVs will reduce sperm kinematic and motility parameter values.
View Article and Find Full Text PDFA novel naphthylchalcone ([E]-4-(3-[naphthalen-2-yl]-3-oxoprop-1-en-1-yl) induces intrinsic and extrinsic apoptosis in human acute leukemia cell lines.
Fundam Clin Pharmacol
February 2025
Experimental Oncology and Hemopathies Laboratory, Clinical Analysis Department, Federal University of Santa Catarina, Florianópolis, 88040-900, Brazil.
Background: Chalcones have been described in the literature as promising antineoplastic compounds.
Objectives: Therefore, the objective of this study was to analyze the cytotoxic effect of 23 synthetic chalcones on human acute leukemia (AL) cell lines (Jurkat and K562).
Methods: Cytotoxicity assessment was performed using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method.
S-Sulfocysteine's toxic effects on HT-22 cells are not triggered by glutamate receptors, nor do they involve apoptotic or genotoxicity mechanisms.
Cytotechnology
February 2025
Department of Physiology, Faculty of Medicine, Pamukkale University, Denizli, Türkiye.
S-Sulfocysteine (SSC) is a metabolite derived from the metabolism of sulfur-containing amino acids. It has been implicated in neurotoxicity observed in children with sulfite oxidase deficiency. The aim of our study was to confirm the neurotoxic effects of SSC using a mouse hippocampal cell line (HT-22) and to investigate the role of apoptosis in these effects, especially in terms of caspase-3 activation and genotoxicity.
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!