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In the context of the FEEDAP opinion on the safety and efficacy of a feed additive consisting of chromium propionate (KemTRACE™ Chromium) of 18 March 2021, the EU Reference Laboratory for feed additives (EURL) was not in a position to recommend the method: proposed by the applicant for official control for the quantification of the organic chromium content in premixtures and feedingstuffs. The applicant subsequently proposed a new method of analyses, incorporating a tracer in the composition of a premix, which has been evaluated by EURL and recommended as official method for the quantification of the organic chromium content in premixtures and feedingstuffs. In view of the above, the Commission asked EFSA to issue a new opinion on the safety and efficacy of chromium proprionate (KemTRACE™ Chromium) as feed additive for all growing poultry species including the newly submitted information by the applicant that involves the use of the microtracer.
View Article and Find Full Text PDFChronic exposure to hexavalent chromium induces esophageal tumorigenesis via activating the Notch signaling pathway.
J Zhejiang Univ Sci B
October 2024
Department of Thoracic Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China.
Hexavalent chromium Cr(VI), as a well-established carcinogen, contributes to tumorigenesis for many human cancers, especially respiratory and digestive tumors. However, the potential function and relevant mechanism of Cr(VI) on the initiation of esophageal carcinogenesis are largely unknown. Here, immortalized human esophageal epithelial cells (HEECs) were induced to be malignantly transformed cells, termed HEEC-Cr(VI) cells, via chronic exposure to Cr(VI), which simulates the progress of esophageal tumorigenesis.
View Article and Find Full Text PDFEffects of magnetotactic bacteria (MTB) on membrane fouling control in an ultrafiltration treatment of chromium-containing surface water.
Water Sci Technol
January 2025
School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China E-mail:
Ultrafiltration membranes are widely used in the treatment of surface water. However, membrane fouling is a core issue that needs to be addressed in its application. Magnetotactic bacteria (MTB) show early film-forming and magnetotactic behaviour in the presence of external magnetic fields.
View Article and Find Full Text PDFEco-friendly sensing of hexavalent chromium ions via copper-doped carbon quantum dots: a fluorescent probe for water safety.
Mikrochim Acta
January 2025
Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, AlBeheira, Egypt.
The hydrothermal synthesis is presented of copper-doped carbon dots (Cu-CDs) from citric acid, urea, and copper chloride, resulting in blue-fluorescent particles with stable emission at 438 nm when excited at 340 nm. Through comprehensive spectroscopic and microscopic characterization (FTIR, XPS, UV, and HRTEM), the Cu-CDs demonstrated remarkable stability across varying pH levels, ionic strengths, temperatures, and UV exposure. Notably, Cu-CDs exhibit ultra-sensitive and selective detection of hexavalent chromium [Cr(VI)] ions in aqueous environments driven by fluorescence quenching.
View Article and Find Full Text PDFA Randomized Comparison of Bioheart Sirolimus-Eluting Bioresorbable Scaffold and Everolimus-Eluting Stents: The BIOHEART-II Trial.
JACC Cardiovasc Interv
January 2025
Department of Cardiology, Fu Wai Hospital, National Center for Cardiovascular Diseases of China, Beijing, China. Electronic address:
Background: First-generation bioresorbable scaffolds (BRS) increased risks of stent thrombosis and adverse events. The Bioheart scaffold is a new poly-L-lactic acid-based BRS.
Objectives: This study sought to evaluate the efficacy and safety of the BRS in patients with coronary artery disease.
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