MyMedR

Displaying all 3 publications

Abstract:

Sort:

Fulltext Designing a new magnetic g-C3N4 nanocatalyst based on Ag nanoparticles supported by β-cyclodextrin for effective reduction of nitroaromatic compounds

Rostami S, Yahyazadeh A, Adibi H

Sci Rep, 2024 Dec 30;14(1):31586.
PMID: 39738240 DOI: 10.1038/s41598-024-76786-z

In this study, we present the synthesis of a silver nanocomposite by utilizing a β-cyclodextrin (βCD) polymer anchored onto the surface of magnetic g-C3N4 (referred to as g-C3N4-Fe3O4/βCD-Ag). The structure and composition of the g-C3N4-Fe3O4/βCD-Ag nanocomposite were thoroughly characterized using various techniques, including FT-IR, FE-SEM-EDS, TEM, TGA, XRD, ICP, and VSM. This catalytic system exhibited excellent selectivity in reducing nitro groups, even in the presence of other reactive functional groups, resulting in high yields ranging from 85 to 98%. Moreover, the organometallic nanocatalyst could be easily recovered from the solution using an external magnet and demonstrated consistent catalytic activity over six consecutive runs with a slight decrease.
Discovery of Sulfanilamide-diazo Derivatives Incorporating Benzoic Acid Moieties as Novel Inhibitors of Human Carbonic Anhydrase II Activity

Belani F, Mehrabi M, Adibi H, Mehrabi M, Khodarahmi R

Curr Protein Pept Sci, 2024 Dec 06.
PMID: 39648421 DOI: 10.2174/0113892037332139241008054602

BACKGROUND: Sulfonamides are widely used carbonic anhydrase inhibitors (CAIs) in clinical settings, however, their nonspecific inhibition of multiple carbonic anhydrase isoforms can lead to reduced efficacy and side effects. This study aimed to develop sulfanilamide-diazo derivatives incorporating benzoic acid moieties as novel inhibitors of hCA II activity to reduce side effects and enhance selectivity for different CA isozymes.
METHODS: We investigated the interaction between these derivatives and the hCA II isozyme via various spectroscopic and docking methods.
RESULTS: The kinetic data demonstrates that compound 1 (C1) and compound 2 (C2) share a similar inhibitory strength against hCA II, effectively inhibiting its esterase activity through a noncompetitive mechanism with Ki values at low micromolar levels. Fluorescence measurements indicated that the synthesized compounds suppressed the inherent fluorescence of hCA II via a static quenching process, with each compound showing a singular binding site within the enzyme. Thermodynamic evidences highlight the significance of van der Waals interactions and hydrogen bonding in the binding process. The results of molecular docking indicated that both C1 and C2 effectively obstruct the entrance to hCA II's active site, with no significant differences in their binding conformations.
CONCLUSION: While C1 and C2 exhibit CA inhibitory potency lower than that of sulfonamide compounds, this study offers valuable insights that could pave the way for the development of a promising scaffold for designing new carbonic anhydrase inhibitors.
Fulltext The effect of Ramadan fasting on fasting serum glucose in healthy adults

Larijani B, Zahedi F, Sanjari M, Amini MR, Jalili RB, Adibi H, et al.

Med J Malaysia, 2003 Dec;58(5):678-80.
PMID: 15190653

The effect of Ramadan fasting on fasting serum glucose (FPG) is still a matter of controversy. One hundred and fifteen healthy volunteers fasted for > or = 25 days during Ramadan. Blood samples were taken 1 week before Ramadan and on the 14th and 28th day of Ramadan. Serum glucose was determined by the glucose oxidase method. FPG decreased from 88.4 + 9.0 mg/dl to 62.9 +/- 7.7 mg/dl (p < 0.001). Men and women both experienced a significant drop in FPG. Calorie intake decreased in all groups (p < 0.001) and was positively correlated with decreasing FPG. FPG decreases with Ramadan fasting and has no serious adverse effect on fasting adults.

Filters

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links