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In vertebrates, the liver was long thought to be the only site of vitellogenin (Vtg) production, but recent studies demonstrated that Vtg is also expressed in extrahepatic districts. The aim of this paper is to assess, by in situ hybridization and immunohistochemistry, the expression of Vtg in the testis and kidney of Torpedo marmorata exposed to 17β-estradiol (E(2)). In treated samples vtg mRNA and Vtg were detected contemporaneously only in the testis; differently the kidney cells were positive to Vtg antibody, but negative to vtg mRNA. This is the first study to assess that male germ cells, after an exposure to E(2), synthesize Vtg in a stage-dependent manner. The presence of Vtg and the modifications observed in the kidney after E(2) treatment are discussed.
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http://dx.doi.org/10.1016/j.ygcen.2011.09.009 | DOI Listing |
Pestic Biochem Physiol
November 2025
Yantai Academy of Agricultural Sciences, Yantai 265500, China. Electronic address:
The diamide insecticide cyantraniliprole (CYA) and the triazole fungicide difenoconazole (DIF) are frequently co-detected in bee-related matrices. However, the interactive effects of these compounds on honey bee (Apis mellifera L.) physiology remain insufficiently elucidated.
View Article and Find Full Text PDFComp Biochem Physiol B Biochem Mol Biol
September 2025
Yaeyama Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, Ishigaki, Okinawa 907-0415, Japan.
Three egg proteins (EP1, EP2, and EP3) were detected in ovulated eggs of Acropora aff. tenuis, a reef-building stony coral found in tropical and subtropical areas. The proteins were separated into different fractions by gel filtration chromatography, and different patterns were observed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blotting with antiserum against A.
View Article and Find Full Text PDFJ Exp Zool B Mol Dev Evol
August 2025
Laboratorio de Biología Reproductiva de Vertebrados, Grupo de Estudios en Biodiversidad, Universidad Industrial de Santander, Bucaramanga, Colombia.
In vertebrates, the provision of nutrients to developing embryos varies widely, ranging from yolk-dependent strategies to highly specialized forms of placental nourishment. Vitellogenins (VTGs) are essential proteins for egg yolk formation in oviparous and lecithotrophic species. In contrast, in eutherian mammals, the loss of VTGs is associated with the evolution of matrotrophy (placentotrophy and lactation), where maternal nutrition via the placenta replaces the need for large yolk reserves during embryonic development.
View Article and Find Full Text PDFSensors (Basel)
July 2025
School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China.
Video temporal grounding (VTG) aims to localize a semantically relevant temporal segment within an untrimmed video based on a natural language query. The task continues to face challenges arising from cross-modal semantic misalignment, which is largely attributed to redundant visual content in sensor-acquired video streams, linguistic ambiguity, and discrepancies in modality-specific representations. Most existing approaches rely on intra-modal feature modeling, processing video and text independently throughout the representation learning stage.
View Article and Find Full Text PDFJ Nutr Biochem
August 2025
Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo 315211, China; Key Laboratory of Aquaculture Biotechnology Ministry of Education, Ningbo University, Ningbo, 315211, China; Key Laboratory of Green Mariculture (Co-construction by Ministry and Province),
Cholesterol, essential for steroidogenesis, is crucial in ovarian development. In crustaceans, scavenger receptor class B member (Srb) and steroidogenic acute regulatory protein (Star) may be key proteins in cholesterol transport and steroidogenesis, respectively. This study aimed to explore cholesterol's role in steroidogenesis and ovarian development in female swimming crabs through in vivo and in vitro experiments.
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