Publications by authors named "Huihui Mei"

The carbohydrate-insulin model predicts that meals with varying glycemic indices will elicit distinct metabolic and hunger responses, including greater intake at subsequent meals following high-glycemic-index meals. To test this, a randomized trial (NCT05804942) was conducted in healthy adults using intervention meals with low, medium, and high glycemic indices and a constant macronutrient composition. After intake of the intervention meals, glucose and insulin followed the predicted pattern, but subjective hunger did not.

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The translational and rotational dynamics of anisotropic optical nanoprobes revealed in single particle tracking (SPT) experiments offer molecular-level information about cellular activities. Here, we report an automated high-speed multidimensional SPT system integrated with a deep learning algorithm for tracking the 3D orientation of anisotropic gold nanoparticle probes in living cells with high localization precision (<10 nm) and temporal resolution (0.9 ms), overcoming the limitations of rotational tracking under low signal-to-noise ratio (S/N) conditions.

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A novel fluorescent probe TSOC (thiazole salicylaldehyde oxazole chlorinated) was synthesized based on benzothiazole conjugated olefinic bonds with salicylicaldehyde unit as fluorophore and a phenyl oxazole unit as bonding unit. The probe could reversibly detect of Cuand Sover other common ions with longer emission and large stokes shift in an aqueous solution at pH 7.3 (DMSO-Hepes, v/v, 5:1, 10 mM).

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A novel fluorescent probe based on hydroxyquinoline conjugated with a charged trimethylindolenine unit Toc-Ac was developed, which exhibited long wavelength emission (560 nm) and a large Stokes shift (∼140 nm) due to the intrinsic mechanism of the intramolecular charge transfer process. The probe Toc-Ac showed a highly sensitive response to Cys (the detection limit was 3.86 × 10 M) in aqueous solution and was successfully applied for detecting endogenous Cys in living cells and mice.

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A novel hemicyanine-based fluorescent probe was developed for the fast, selective, and reversible detection of Cu ions with "turn-on" fluorescence response in the aqueous solution. The sensing mode was demonstrated through fluorescence, UV-vis, HRMS, H NMR, and DFT calculations. The probe was successfully used for the imaging of Cu ions in living cells.

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Article Synopsis
  • A new hemicyanidine-based probe called L has been developed for detecting Fe and Al ions, characterized using advanced techniques like X-ray diffraction and NMR.
  • This probe turns the solution red when Fe ions are present and pink for Al ions, showcasing a high sensitivity and selectivity.
  • The mechanism of detection involves photo-induced electron transfer and chelation-enhanced fluorescence, and it can also be used to monitor these ions inside living cells.
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  • Two new fluorescent sensors, CHP and CHS, were created to detect zinc ions and phosphate anions in a specific buffer solution, showing strong fluorescence and color changes with zinc.
  • The detection limits for both sensors regarding zinc ions were individually determined, indicating their high sensitivity.
  • The sensors also displayed a reversible ability to release zinc ions when phosphate anions were present, and they were effective in detecting these substances in live cell imaging experiments.
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  • Two novel fluorescent probes, SQ and NQ, utilizing an 8-hydroxyquinoline structure, were created for detecting aluminum (Al) and fluoride (F).
  • Both probes exhibited significant fluorescence enhancement upon binding with Al, showing impressive detection limits of 1.48 × 10⁻⁷ M for SQ and 4.23 × 10⁻⁷ M for NQ.
  • The probes demonstrated a reversible "off-on-off" fluorescence response and were effective in detecting Al and F in vitro in PC12 cells.
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  • An indole-based probe called IHT changes color from colorless to violet and shows a strong fluorescence response when it detects copper ions (Cu) at physiological pH.
  • The probe has a low detection limit of 8.93 × 10 M, which is significantly below the allowable concentration levels for drinking water set by the US Environmental Protection Agency.
  • The binding mechanism of IHT to Cu ions is confirmed through various analytical techniques, and the probe has been successfully used for imaging Cu ions in living cells.
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  • A Schiff base fluorescence probe (HL) was created by combining salicylaldehyde and an 8-aminoquinoline derivative, which emits light when it detects Zn and Al ions.
  • The probe has distinct detection limits for Zn (11.5 nM) and Al (23.5 nM), showing a stronger affinity for Al when both ions are present.
  • Additionally, HL can identify fluoride (F) through a "turn-off" response and effectively monitor Al, Zn, and F in living PC12 cells, highlighting its potential for in vivo use.
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