The sensitivity of detection of anticholinesterase compounds (e.g. tacrine) by the biochemical method significantly increased when fluorogenic compound N-(4-(7-diethylamino-4-methylcoumarine-3-yl)phenyl)maleimide was used instead of Ellman's reagent. A kinetic fluorescent method for evaluating cholinesterase inhibitors is proposed.
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http://dx.doi.org/10.1007/s10517-006-0469-5 | DOI Listing |
BMC Mol Cell Biol
January 2025
Institute of Future Biophysics, Institutskiy per. 9, Dolgoprudny, Moscow Oblast, Moscow, Russia.
This paper describes a method for determining the cytotoxicity of chemical compounds based on the detection of fluorescent proteins-in this case, green fluorescent protein (GFP) and red fluorescent protein (RFP), which are released into the medium from dead cells. This method is similar in principle to the lactate dehydrogenase test (LDH test), but it does not require a reaction with a chromogenic substrate. This method also makes it possible to independently determine the viability of different lines when used in cocultures.
View Article and Find Full Text PDFMikrochim Acta
January 2025
School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, China.
A ratiometric fluorescent nanoprobe (CDs-Rho), synthesized through the simple covalent amide linkage between carbon dots (CDs) and pH-sensitive rhodamine dye (Rho), was designed for the precise sensing and imaging of extremely alkaline environments. The sensing mechanism involves the opposite pH-dependent fluorescence changes in CDs and Rho, respectively, coupled with pH-regulated FRET efficiency from CDs to Rho. The nanoprobe features a wide pH response window from pH 7.
View Article and Find Full Text PDFBiosens Bioelectron
January 2025
Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, PR China. Electronic address:
Pathogen nucleic acid detection technology based on isothermal amplification and CRISPR/Cas12a system offers advantages in terms of high sensitivity, high specificity, and rapidity. However, this method has not been widely applied because of its shortcomings in utilizing conventional instruments, which cannot satisfy the requirements for Point of Care Testing (POCT), such as integration, convenience, and miniaturization. In this study, we developed an integrated lift-heater centrifugal microfluidic platform (Lift-CM) to automate the processes of isothermal amplification and CRISPR/Cas12a detection.
View Article and Find Full Text PDFPhytomedicine
January 2025
School of Chinese Materia Medica, Beijing University of Chinese Medicine, 11 Bei San Huan Dong Lu, Beijing 100029, China. Electronic address:
Background: Radix Bupleuri (RB) and acetaminophen (APAP) are two popular medications having potential hepatotoxicity and substantial risks of irrational co-administration and excessive use, posing an overlooked danger of drug-induced liver injury (DILI). Autophagy is a protective mechanism against APAP-induced DILI, yet, saikosaponin d (SSd) in RB has been characterized to regulate autophagy, although the current findings are controversial.
Purpose: We aim to elucidate whether SSd promoted APAP-induced liver injury by regulating autophagy.
Stem Cell Res Ther
January 2025
College & Hospital of Stomatology, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, 230032, China.
Background: The aging of bone marrow mesenchymal stem cells (BMSCs) impairs bone tissue regeneration, contributing to skeletal disorders. LncRNA NEAT1 is considered as a proliferative inhibitory role during cellular senescence, but the relevant mechanisms remain insufficient. This study aims to elucidate how NEAT1 regulates mitotic proteins during BMSCs aging.
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