Acid-Promoted Phosphorylation of Ynones for the Synthesis of Phosphoryl Enones.

An efficient phospha-aldol/Meyer-Schuster rearrangement cascade reaction between propargylic aldehydes and phosphine oxides has been developed in which various phosphoryl enones were obtained in moderate to excellent yields. A comprehensive series of mechanistic experiments, including the identification of key intermediates and the application of O isotope labeling, has confirmed that this cascade reaction proceeds through a phospha-aldol followed by Meyer-Schuster rearrangement cascade reaction.

Exploring the mechanisms influencing psychological adaptation in athletes in high-risk sports: a moderated mediation model.

This study explores the impact of state and trait anxiety on perceived stress in athletes in high-risk sports, focusing on the mediating role of cognitive reappraisal and the moderating effect of sports psychological skills. Data were collected from athletes in sports like Boxing, Sanda, Mixed Martial Arts, Freestyle Skiing, and Ski Jumping. The analysis, conducted using the PROCESS macro revealed that both state and trait anxiety significantly predict perceived stress (β = 0.

Smart core-shell microneedles for psoriasis therapy: In situ self-assembly of calcium ion-coordinated dexamethasone hydrogel.

Psoriasis is a prevalent relapsing dermatological condition that often necessitates lifelong treatment. The distinctive thickening of the stratum corneum presents a challenge to drug penetration. The employment of microneedles has been demonstrated to enhance the transdermal drug delivery efficacy by creating multiple microchannels in the skin.

Gas-propelled anti-hair follicle aging microneedle patch for the treatment of androgenetic alopecia.

Existing treatments for androgenetic alopecia (AGA) are unsatisfactory, owing to the two major reasons: (1) Oxidative stress and vascularization deficiency in the perifollicular microenvironment provoke the premature senescence of hair follicles, limiting the transformation of hair growth cycle from the telogen to the anagen phase; (2) The amount of drug delivered to the perifollicular region located in the deep dermis is very limited for passive drug delivery systems. Herein, we developed a gas-propelled microneedle patch integrated with ferrum-chelated puerarin/quercetin nanoparticles (PQFN) to increase drug accumulation in hair follicles and reshape the perifollicular microenvironment for improved hair-regenerating effects. PQFN can rejuvenate testosterone (Tes)-induced senescence of dermal papilla cells by scavenging ROS, restoring mitochondrial function, regulating signaling pathways related to hair regeneration, and upregulating hair growth-promoting genes.

Evaluation of Fenton-like reaction for sorption and degradation of kasugamycin in the presence of biochar.

Although the use of biochar as an adsorbent for the removal of various pollutants from wastewater is well established, the use of biochar/modified biochar for the scavenging of antibiotics from aqueous media in the Fenton-like system receives less attention. The highest kasugamycin (KSM) adsorption capacity (5.0 mg g) was obtained from the pristine biochar at the lowest initial pH of 3 in Fenton-like system.