scholarly journals Effects of copper on larvae of the marbled crab Pachygrapsus marmoratus (Decapoda, Grapsidae): Toxicity test and biochemical marker responses

2019 ◽  
Vol 223 ◽  
pp. 71-77 ◽  
Author(s):  
M. Oliva ◽  
L. De Marchi ◽  
A. Cuccaro ◽  
V. Casu ◽  
F. Tardelli ◽  
...  
Keyword(s):  
Toxicity Test ◽  
Biochemical Marker ◽  
Pachygrapsus Marmoratus

PISUM SATIVUM (LINN): TOXICITY TEST OF m-XYLOHYDROQUINONE WHEN USED AS AN ORAL CONTRACEPTIVE

1956 ◽  
Vol 23 (4_Suppl) ◽  
pp. S93-S97 ◽  
Author(s):  
S. N. Sanyal ◽  
S. C. Banerjee ◽  
Jyoti Sen
Keyword(s):  
Oral Contraceptive ◽  
Pisum Sativum ◽  
Toxicity Test

Second-phase validation of developmental toxicity test using embryoid body's area

2019 ◽  
Author(s):  
Jae-Hwan Lee ◽  
Seon Mi Park ◽  
Eui-Man Jung ◽  
Eui-Bae Jeung
Keyword(s):  
Toxicity Test ◽  
Developmental Toxicity ◽  
Second Phase

Is there a Need for Own Median Calculation in the Second Trimester Biochemical Markers Screening?

2017 ◽  
Vol 68 (5) ◽  
pp. 1070-1072
Author(s):  
Dan Navolan ◽  
Mirela Nicolov ◽  
Simona Vladareanu ◽  
Ioana Ciohat ◽  
Marius Craina ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Gestational Age ◽  
Biochemical Markers ◽  
Biochemical Marker ◽  
Second Trimester ◽  
Established Method ◽  
Crown Rump Length ◽  
The Difference ◽  
Fetal Aneuploidies ◽  
Singleton Pregnancies

Screening of fetal aneuploidies in early pregnancy is a well-established method in the materno-fetal medicine. The aim of our study was to analyze if the medians recommended by the manufacturers are adequate to perform an accurate screening or if there is a need for own laboratory medians calculation in second trimester biochemical marker screening.Sera were collected between 14 wp and 22 wp from 3374 singleton pregnancies. We analyzed three second trimester biochemical markers (AFP, hCG and free Estriol) concentration in all pregnant women and in a subgroup of pregnant women in which gestational age was determined based on crown-rump length. Our results showed that for all biochemical markers the difference between the manufacturer and the own calculated median was lower than 10% excepting the hCG value in the group of pregnant women in which the gestational age was determined on basis of crown-rump-length. Our results show it is recommended to replace the values of the median for hCG measurement with the own laboratory calculated medians. This does not seem to be necessary in the case of AFP and free Estriol measurement.

Effects of atrazine and alachlor on self-purification processes in receiving streams

1996 ◽  
Vol 33 (6) ◽  
pp. 181-187 ◽  
Author(s):  
Jana Zagorc-Koncan
Keyword(s):  
Adverse Effect ◽  
Acute Toxicity ◽  
Toxicity Test ◽  
Chronic Toxicity ◽  
Acute Toxicity Test ◽  
Organic Substances ◽  
Inhibiting Effect ◽  
Scenedesmus Subspicatus ◽  
Net Assimilation ◽  
Chlorophyll A Content

In recent years many waterways in Slovenia have been subjected to an increased loading with pesticides due to intensification of agriculture. The most widely used herbicides are atrazine and alachlor and they were detected in some rivers and even in ground water. Therefore the effects of atrazine and alachlor on selfpurification processes were investigated. The basic selfpurification processes studied were biodegradation of organic substances and photosynthesis and growth of algae. The inhibiting effect of pesticides on the process of biodegradation of organic pollutants was evaluated by the use of laboratory river model and mathematical modelling. The harmful impacts of pesticides on aquatic autotrophic organisms were assessed by measurement of net assimilation inhibition (24-h acute toxicity test) as well as growth inhibition - chlorophyll- a content (72-h chronic toxicity test) of algae Scenedesmus subspicatus. The results obtained demonstrate that atrazine and alachlor in concentrations found in our rivers have practically no effect on biodegrading heterotrophic organisms, while their adverse effect on algae is quite considerable.

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