Results 21 to 30 of about 40,575 (336)

The role of chorion on toxicity of silver nanoparticles in the embryonic zebrafish assay [PDF]

Environmental Health and Toxicology, 2014
Objectives This study was designed to investigate how the size- and surface coating-dependent toxicity of silver nanoparticles (AgNPs) is influenced by the presence and absence of the chorion in an embryonic zebrafish assay.
Ki-Tae Kim, Robert L. Tanguay
doaj   +1 more source

Transgenic expression in zebrafish embryos with an intact chorion by electroporation and microinjection

Biotechnology Reports, 2023
Electroporation is regularly used to deliver agents into cells, including transgenic materials, but it is not used for mutating zebrafish embryos due to the lack of suitable systems, information on appropriate operating parameters, and the challenges ...
Nusrat Tazin, Christopher Jordon Lambert, Raheel Samuel, Tamara J. Stevenson, Joshua L. Bonkowsky, Bruce K. Gale   +5 more
doaj   +1 more source

A method for isolating and culturing placental cells from failed early equine pregnancies [PDF]

, 2016
Early pregnancy loss occurs in 6–10% of equine pregnancies making it the main cause of reproductive wastage. Despite this, reasons for the losses are known in only 16% of cases.
A.J. McGladdery, A.M. de Mestre, Allen, B.V. Rose, C. Smith, Cabrera-Sharp, D.C. Wathes, de Mestre, Diskin, F.E. Barrelet, Greenwold, H. Neal, Hamstead, I.J. Cameron, Inskeep, J. Crowhurst, J. Pynn, J.R. Crabtree, K.L.P. Verheyen, Lanoix, M.J. Firth, O.D. Pynn, Oriol, Petracchi, Raudsepp, Robbin, S. Bate, Seo, Strand, V. Cabrera-Sharp, Vanderwall, Z. Wise   +31 more
core   +1 more source

THE ROLE OF CYTOKINES AND AGMATINE IN THE DEVELOPING PLACENTA WITH PHYSIOLOGICAL AND PREGNANCY COMPLICATED

Медицинский вестник Юга России, 2013
Purpose: To study the content of cytokines and agmatine in the development of the placenta in physiological and complicated gestation.Materials and Methods: 57 women, of which 34 women with physiological pregnancy and 23 women with placental ...
A. S. Degtyareva, I. I. Krukier, E. V. Narezhnaya, V. V. Avrutskaya, M. A. Levkovich, A. A. Nikashina   +5 more
doaj   +1 more source

Chorion in fish: Synthesis, functions and factors associated with its malformations

Aquaculture Reports, 2023
The chorion is an acellular envelope surrounding the oocyte. In fish, this envelope plays a pivotal role during fertilization and protects the developing embryo against environmental and mechanical factors until the moment of hatching.
Maritza Pérez-Atehortúa, Adrian J. Hernández, Patricio Dantagnan, Mauricio Silva, Jennie Risopatrón, Jorge Farías, Elías Figueroa Villalobos, Iván Valdebenito   +7 more
doaj   +1 more source

Patterns of gene expression in schistosomes: localization by whole mount in situ hybridization [PDF]

, 2007
rom the identification of genes to the characterization of their functions and interactions. Developmental biologists have long used whole mount in situ hybridization (WISH) to determine gene expression patterns, as a vital tool for formulating and ...
Davis, G. P. DILLON, H. V. ISAACS, J. C. ILLES, Pownall, R. A. WILSON, Skelly, Wilson   +7 more
core   +1 more source

The Role of Progesterone and a Novel Progesterone Receptor, Progesterone Receptor Membrane Component 1, in the Inflammatory Response of Fetal Membranes to Ureaplasma parvum Infection. [PDF]

PLoS ONE, 2016
Ureaplasma parvum (U. parvum) is gaining recognition as an important pathogen for chorioamnionitis and preterm premature rupture of membranes. We aimed to investigate the roles of progesterone (P4) and a novel progesterone receptor, progesterone receptor
Liping Feng, Carla E Ransom, Matthew K Nazzal, Terrence K Allen, Yi-Ju Li, Tracy Truong, Lauren C Potts, Patrick C Seed, Amy P Murtha   +8 more
doaj   +1 more source

TCMacro: A Simple and Robust ImageJ-Based Method for Automated Measurement of Tail Coiling Activity in Zebrafish

Biomolecules, 2021
Tail coiling is a reflection response in fish embryos that can be used as a model for neurotoxic analysis. The previous method to analyze fish tail coiling is largely based on third-party software.
Kevin Adi Kurnia, Fiorency Santoso, Bonifasius Putera Sampurna, Gilbert Audira, Jong-Chin Huang, Kelvin H.-C. Chen, Chung-Der Hsiao   +6 more
doaj   +1 more source

Egg Production in the Boxelder Bug \u3ci\u3eBoisea Trivittata\u3c/i\u3e (Hemiptera: Rhopalidae) [PDF]

, 2018
Boxelder bug females emerged from overwintering sites in the spring and rapidly provisioned eggs with yolk materials. Five discrete egg stages were identified based on egg size, protein content, and degree of chorion sclerotization.
Grimnes, Karin A, Miller, Deborah, Wyman, Aaron J   +2 more
core   +2 more sources

Ultrastructural studies of the morphological variations of the egg surface and envelopes of the African catfish Clarias gariepinus (Burchell, 1822) before and after fertilisation with a discussion of fertilisation mechanism

Scientia Marina, 2006
Much of the existing knowledge of the mechanisms involved in teleost fertilisation is based on a few small model species that have no commercial value. Research is therefore urgently required to address mechanisms involved in fertilisation in species of ...
Imam A. A. Mekkawy, Alaa G. M. Osman
doaj   +1 more source