Results 41 to 50 of about 487,432 (309)

Acute toxicity of atrazine to Oreochromis niloticus fingerlings [PDF]

, 2001
Acute toxicity of atrazine to Oreochromis niloticus was undertaken to find the lethal concentration (LC) 50 of atrazine using fingerlings. Different concentrations were prepared in mg/L.
Jiya, K.R., Majinga, S.I.I., Mbagwu, L.C.   +2 more
core  

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

LC50 determination and intoxication symptoms of a new pyridine carboxamide pesticide Flonicamid on common carp Cyprinus carpio

RUDN Journal of Agronomy and Animal Industries, 2019
The present study was undertaken to evaluate the lethal toxicity and stress signs of Flonicamid toward juvenile common carp ( Cyprinus carpio ). The 96 h LC50 values, determined 43.17 mgL-1 by probit analysis in a semi-static system. LC50 24, 48 and 72 h
Melika Ghelichpour, Ali Taheri Mirghaed, Amalia Perez Jimenez   +2 more
doaj   +1 more source

Olfactory Learning Behavior and Mortality of the Honey Bee Apis mellifera jemenitica in Response to Pyrethroid Insecticide (Deltamethrin)

Toxics, 2023
Honey bees are constantly threatened due to the wide use of pesticides. This study presents the effects of deltamethrin on the mortality, olfactory learning, and memory formation of the native Saudi bee Apis mellifera jemenitica.
Mohamedazim I. B. Abuagla, Javaid Iqbal, Hael S. A. Raweh, Abdulaziz S. Alqarni   +3 more
doaj   +1 more source

LARVACIDE EFFECT OF ETHANOL EXTRACT OF PIPERIS NIGRI FRUCTUS AGAINST AEDES AEGYPTZ LINN. LARVA [PDF]

, 2010
Five concentration OF ethanol extract of Piperis nigri Fructus (Black pepper), i.e. 1.3.5, 7 and 9 ppm were investigated their activity against Aedes aegypti Linn. larva.
., Meyta, Kartini, Kartini, Palupi, Sajekti   +2 more
core  

Internal Lethal Concentrations of Halobenzenes with Fish (Gambusia affinis)

Ecotoxicology and Environmental Safety, 1997
The internal lethal concentrations is a potential measure of toxicity which could be usefully applied in environmental toxicology and risk assessment. Using halobenzenes, which are common environmental contaminants, and represented test compounds, experiments were conducted in aquaria with the mosquitofish (Gambusia affinis).
Chaisuksant, Yupadee, Yu, Jimmy, Connell, Des   +2 more
openaire   +3 more sources

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Clarifying the misuse of EC50, IC50, and LC50 in cytotoxicity study of water disinfection byproducts: A critical analysis and perspective

Hygiene and Environmental Health Advances
Cytotoxicity serves as a crucial standard for assessing the potential health risks posed by water disinfection by-products (DBPs). The precise use of toxicological metrics, such as EC50, IC50, and LC50, is essential for reliable safety evaluations and ...
Zhuorong Du, Jiafu Li
doaj   +1 more source

Herbal Remedies for Combating Irradiation: a Green Antiirradiation Approach [PDF]

, 2014
Plants play important roles in human life not only as suppliers of oxygen but also as a fundamental resource to sustain the human race on this earthly plane.
Choong, Y. S., Deivanai, S., Lachumy, S. J., Latha, L. Y., Oon, C. E., Saravanan, D., Sasidharan, S., Vijayarathna, S., Yeng, C.   +8 more
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source