Results 41 to 50 of about 8,864 (220)

Comprehensive Evaluation of Bisphenol A Toxicity Reveals Neurobehavioral, Metabolic, and Reproductive Impairments in Girardia tigrina

Environmental Toxicology, EarlyView.
ABSTRACT Bisphenol A (BPA), a common industrial chemical used in plastics and consumer products, is increasingly detected in aquatic environments, raising serious concerns about its potential ecological impacts. This study evaluated the sublethal and acute toxic effects of BPA on the freshwater planarian Girardia tigrina, a recognized model for ...
Raquel de Jesus Selestrino, Felipe Schaly, Welligton Luciano Braguini   +2 more
wiley   +1 more source

A Krüppel-like factor is required for development and regeneration of germline and yolk cells from somatic stem cells in planarians.

PLoS Biology, 2022
Sexually reproducing animals segregate their germline from their soma. In addition to gamete-producing gonads, planarian and parasitic flatworm reproduction relies on yolk cell-generating accessory reproductive organs (vitellaria) supporting development ...
Melanie Issigonis, Akshada B Redkar, Tania Rozario, Umair W Khan, Rosa Mejia-Sanchez, Sylvain W Lapan, Peter W Reddien, Phillip A Newmark   +7 more
doaj   +1 more source

Flatworms have lost the right open reading frame kinase 3 gene during evolution [PDF]

, 2015
All multicellular organisms studied to date have three right open reading frame kinase genes (designated riok-1, riok-2 and riok-3). Current evidence indicates that riok-1 and riok-2 have essential roles in ribosome biosynthesis, and that the riok-3 gene
Amani, Parisa, Ansell, Brendan R. E., Boag, Peter R., Breugelmans, Bert, Gasser, Robin B., Hofmann, Andreas, Jex, Aaron R., Sternberg, Paul W., Stroehlein, Andreas J., Young, Neil D.   +9 more
core   +1 more source

Live large flatworm in intestine

Pan African Medical Journal, 2021
A 40-year male presented to the emergency department with the complaints of fatigue that had progressively worsened over the period of 3 months. He had recently emigrated from Mexico, where he worked on a farm and eaten raw watercress. Clinical examination revels pallor of oral mucosa.
Medhavi Vivek Joshi, Chaitanya Ajay Kulkarni   +1 more
openaire   +3 more sources

The Employment of Hydrogen Peroxide in Water Disinfection Poses a Threat to Aquatic Ecosystems Because of Its Toxicity to Nontarget Organisms

Environmental Toxicology, EarlyView.
ABSTRACT Hydrogen peroxide is widely used in water and wastewater treatment, particularly in advanced oxidation processes that aid in the degradation of compounds and microbial disinfection. Despite concerns about potential environmental contamination, its impact on freshwater ecosystems remains inadequately studied.
Letícia Queiroz Almeida, Thayrine Dias Carlos, Leydiane Barbosa Bezerra, Rone S. Barbosa, Nelson Luís Gonçalves Dias Souza, Douglas Henrique Pereira, Renato Almeida Sarmento, Grasiele Soares Cavallini   +7 more
wiley   +1 more source

Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment

eLife, 2019
Animals detect light using opsin photopigments. Xenopsin, a recently classified subtype of opsin, challenges our views on opsin and photoreceptor evolution.
Kate A Rawlinson, Francois Lapraz, Edward R Ballister, Mark Terasaki, Jessica Rodgers, Richard J McDowell, Johannes Girstmair, Katharine E Criswell, Miklos Boldogkoi, Fraser Simpson, David Goulding, Claire Cormie, Brian Hall, Robert J Lucas, Maximilian J Telford   +14 more
doaj   +1 more source

Identification and evolution of nuclear receptors in Platyhelminths.

PLoS ONE, 2021
Since the first complete set of Platyhelminth nuclear receptors (NRs) from Schistosoma mansoni were identified a decade ago, more flatworm genome data is available to identify their NR complement and to analyze the evolutionary relationship of ...
Wenjie Wu, Philip T LoVerde
doaj   +1 more source

Crystalizing the genetic code

, 2000
New developments are presented in the framework of the model introduced by the authors in refs. [1,2] and in which nucleotides as well as codons are classified in crystal bases of the quantum group U_q(sl(2)+sl(2)) in the limit q -> 0.
Frappat, L., Sciarrino, A., Sorba, P.
core   +2 more sources

Fish Space Use and Behavior in an Aquarium: The Use of Microhabitats as Enrichment

Zoo Biology, EarlyView.
The inclusion of microhabitats in a stream tank serves as environmental enrichment for fish in human care. ABSTRACT Environmental enrichment is an important tool to maintain the health and well‐being of animals in human care, but studies of environmental enrichment for fish in human care have lagged behind those of land animals.
Avery Millard, Ben Stenger, Zach Anderson, Justin Ballew, Hannah Fallon, Olivia Lowman, Elizabeth McAllister, Jessica Morales Valenzuela, Andrew Stuckey, Zainab Tanveer, Quinn Towery, Sally Tyrell, Andy Wall, Anna George, Hope Klug   +14 more
wiley   +1 more source

Neurotransmitters of sleep and wakefulness in flatworms

Sleep, 2022
Abstract Study Objectives Sleep is a prominent behavioral and biochemical state observed in all animals studied, including platyhelminth flatworms. Investigations into the biochemical mechanisms associated with sleep—and wakefulness—are important for understanding how these states are regulated and ...
Shauni E T Omond, Matthew W Hale, John A Lesku   +2 more
openaire   +2 more sources