Ecotoxicological and genotoxic effects of dimethyl phthalate (DMP) on Lemna minor L. and Spirodela polyrhiza (L.) Schleid. plants under a short-term laboratory assay

Author(s):  
Fabrizio Pietrini ◽  
Valentina Iannilli ◽  
Laura Passatore ◽  
Serena Carloni ◽  
Giulia Sciacca ◽  
...  
Ecoscience ◽  
1994 ◽  
Vol 1 (3) ◽  
pp. 249-254 ◽  
Author(s):  
Liette Vasseur ◽  
Lonnie W. Aarssen ◽  
Daniel D. Lefebvre

2014 ◽  
Vol 50 (2) ◽  
pp. 251-256
Author(s):  
Igor Vivian de Almeida ◽  
Giovana Domingues ◽  
Lilian Capelari Soares ◽  
Elisângela Düsman ◽  
Veronica Elisa Pimenta Vicentini

Flunitrazepam (FNZ) is a sedative benzodiazepine prescribed for the short-term treatment of insomnia. However, there are concerns regarding possible carcinogenic or genotoxic effects of this medicine. Thus, the aim of this study was to evaluate the cytotoxic, clastogenic and aneugenic effects of FNZ in hepatoma cells from Rattus norvegicus (HTC) in vitro and in bone marrow cells of Wistar rats in vivo. These effects were examined in vitro following treatment with 0.2, 1.0, 5.0 or 10 μg/mL FNZ using a micronucleus test with a cytokinesis block or in vivo using a chromosomal aberration test following treatment with 7, 15 or 30 μg/mL/kg body weight. The results showed that the benzodiazepine concentrations tested were not cytotoxic, aneugenic or clastogenic. However, considering the adverse effects of using this benzodiazepine, more studies are required.


2008 ◽  
Vol 153 (3) ◽  
pp. 687-694 ◽  
Author(s):  
Jaka Razinger ◽  
Marina Dermastia ◽  
Jasna Dolenc Koce ◽  
Alexis Zrimec

1958 ◽  
Vol 90 (10) ◽  
pp. 623-627 ◽  
Author(s):  
W. W. Judd

In the description of the Byron Bog (Judd, 1957a) it was pointed out that Redmond's Pond is situated in the northwest corner of the bog and that during 1956 a tent-trap was anchored in a small bay in the northeast corner of the pond to trap insects emerging as adults from the water. The position of the trap on the pond is shown in the map accompanying the description of the bog (Judd, 1957a) and the structure and use of the trap are also described by Judd (1957b). The trap was placed on the water on May 15, 1956 and remained there until November 8. It was about four feet from the edge of the pond in water about two feet deep. At this point the bottom of the pond was composed of a thick layer of loose, brown peat and the adjacent edge of the pond was occupied by a dense growth of leatherleaf, Chamaedaphne calyculata, growing in Sphagnum (Judd, 1957a). The branches of the bushes of leatherleaf extended out over the water of the small bay in which the trap floated. The only rooted plant growing in and around the trap was spatterdock, Nuphar advena. Floating in the water was a sparse growth of bladderwort, Utricularia vulgaris, and on the surface of the water there were a few scattered fronds of duckweed, Lemna minor, and water flax-seed, Spirodela polyrhiza.


1988 ◽  
Vol 206 (2) ◽  
pp. 285-295 ◽  
Author(s):  
Anita Mukherjee ◽  
Ashok Kumar Giri ◽  
Archana Sharma ◽  
Geeta Talukder

1995 ◽  
Vol 311 (3) ◽  
pp. 1001-1007 ◽  
Author(s):  
C A Brearley ◽  
D E Hanke

Short-term 32P labelling and enzymic dissection of inositol phospholipids was used to study the turnover of 3-, 3,4-, 4-, and 4,5-phosphorylated phosphatidylinositols in the plant Spirodela polyrhiza L. Analysis of label in the whole headgroup reveals that phosphatidylinositol 3- and 4-monophosphates (PtdIns3P and PtdIns4P) and phosphatidylinositol 3,4- and 4,5-bisphosphates [PtdIns(3,4)P2 and PtdIns(4,5)P2] all turn over with a half-life of approximately 2-5 h. Analysis of the labelling of individual phosphomonoesters and phosphodiesters of these lipids indicates a rapid equilibration of label between the 4- and 5-monoester phosphates of PtdIns(4,5)P2 within 5 h and largely independent of changes of labelling in the diester. We observed substantially slower equilibration of label (within approximately 27 h) between the monoester and diester of PtdIns4P. These studies therefore indicate that PtdIns4P and PtdIns(4,5)P2 participate in substrate-cycling reactions, evidence for which has been described experimentally only in erythrocytes, and give confirmation in vivo of the previous detection of inositol phospholipid phosphomonoesterase activity. Similar analyses of label in PtdIns3P and PtdIns(3,4)P2 reveal the likely participation of these molecules in substrate cycles and hence for the first time the presence of PtdIns3P 3-phosphatase and PtdIns(3,4)P2 4-phosphatase activities in plants. PtdIns3P and PtdIns(3,4)P2 undergo turnover at rates similar to those of PtdIns4P and PtdIns(4,5)P2. Estimates are made of the relative sizes of the pools of phospholipid participating in the turnover process.


Sign in / Sign up

Export Citation Format

Share Document