Kaempferol as a novel inhibitor of SARS-CoV-2 RNA-dependent RNA polymerase.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has quickly become a global health pandemic. Among the viral proteins, RNA-dependent RNA polymerase (RdRp) is responsible for viral genome replication and has emerged as a promising target against SARS-CoV-2 infection. Dietary bioactive compounds represent an important source of evolutionarily optimized molecules with antiviral properties against SARS-CoV-2 RdRp.

Isolation, structural elucidation, and cytotoxic activity investigation of novel styryl-lactone derivatives from : and studies.

Two styryl-lactone derivatives (1 and 2) were isolated from the aerial parts of . Compound 1 is a newly discovered natural product, and compound 2 is reported in this plant for the first time. The absolute configuration of 1 was determined based on the ECD spectrum.

In silico evaluation of geroprotective phytochemicals as potential sirtuin 1 interactors.

Sirtuin 1 (SIRT1) belongs to the histone deacetylase enzyme family and its activity regulates various signaling networks associated with aging. SIRT1 is widely involved in a large number of biological processes, including senescence, autophagy, inflammation, and oxidative stress. In addition, SIRT1 activation may improve lifespan and health in numerous experimental models.

Smile esthetics: calculated beauty?

Esthetic demand from patients continues to increase. Consequently, the treatments we offer are moving towards more discreet or invisible techniques using lingual brackets in order to achieve harmonious, balanced results in line with our treatment goals. As orthodontists, we act upon relationships between teeth and bone.

[Alveolar hemorrhage, glomerulonephritis and anti-cytoplasmic polynuclear antibodies].

The value of antineutrophilic cytoplasmic antibodies (ANCA) was assessed in the diagnosis and chronic treatment of 7 patients with microscopic polyarteritis or Wegener's granulomatosis. All patients had oligoimmune glomerulonephritis with segmental and focal necrosis and presented with anaemia. Five of them had alveolar haemorrhage with haemoptysis and infiltrates at radiography.