IR Home
DAO
Home
Editors
Forthcoming
Information
Journals
Home
MEPS
AME
CR
DAO
ESEP
Search
Subscribe
Book Series
EE Books
Top Books
ESEP Books
Order
EEIU Brochures
(pdf format)
Discussion Forums
Home
Research
Endangered Species Programs
Institutions
International Ecology Institute
Eco-Ethics International Union
Foundation
Otto Kinne Foundation
 | |
DAO 56:269-274 (2003)
|
Abstract
|
Argyrophilic nucleolar organizer regions (AgNORs) in interphases and metaphases of normal and neoplastic gill cells of Macoma balthica (Bivalvia: Tellinidae) from the Gulf of Gdansk, Baltic Sea
K. Smolarz1, M. Wolowicz1, C. Thiriot-Quiévreux2,*
1Laboratory of Estuarine Ecology, Institute of Oceanography, University of Gdansk, Al. Marszalka, J. Pilsudskiego, 81-378 Gdynia, Poland
2Observatoire Océanologique, UPMC, Centre National de la Recherche Scientifique, INSU, BP 28, 06230 Villefranche-sur-Mer, France
*Corresponding author. Email: thiriot@obs-vlfr.fr
ABSTRACT: Chromosome analysis of gill cells of different populations of Macoma balthica (L.) from the Bay of Gdansk (Baltic Sea) revealed 2 clam categories, 1 with neoplastic features and 1 without. Silver-staining was performed on interphase and
metaphase cells of both categories. The mean argyrophilic nucleolar organizer region (AgNOR) count per abnormal interphase cell was significantly higher than in normal interphase cells. Normal silver-stained metaphases had 3 nucleolar organizer region
(NOR) chromosome phenotypes. The location of the NORs in the most frequent phenotype (55.6% in 54 metaphases scored) was interstitial on the largest metacentric chromosome pair, Pair No. 1. Abnormal silver-stained metaphases had a higher number of active
NOR sites. Different phenotypes were observed (frequency greater than 10% for 67 metaphases scored); 2 were similar to those in normal metaphases and 5 were ectopic. The higher activity of AgNORs observed in abnormal cells confirmed the diagnosis of
malignant neoplasia.
KEY WORDS: Silver-staining · Nucleolar organizer regions · Neoplasia · Macoma balthica · Baltic Sea
Full text in pdf format
Published in DAO Vol.
56, No. 3
(2003) on October 24
Print ISSN: 0177-5103; Online ISSN: 1616-1580.
Copyright © Inter-Research, Oldendorf/Luhe, 2003
|
