Publications by authors named "Y Raymond Chan"

Background: The COVID-19 pandemic has had profound psychophysiological and socioeconomic effects worldwide. COVID-19 anxiety syndrome (CAS) is a specific cluster of maladaptive coping strategies, including perseveration and avoidance behaviours, in response to the perceived threat and fear of COVID-19. CAS is distinct from general COVID-19 anxiety.

View Article and Find Full Text PDF

Surfactant protein-B (SP-B) deficiency is a lethal neonatal respiratory disease with few therapeutic options. Gene therapy using adeno-associated viruses (AAV) to deliver human cDNA (AAV-hSPB) can improve survival in a mouse model of SP-B deficiency. However, the effect of this gene therapy wanes.

View Article and Find Full Text PDF

Diabetic foot wounds (DFW) are notoriously difficult to treat owing to poor vascularity, delayed healing and higher rates of infection. Human-derived acellular dermal matrices (ADM) have been used in DFW treatment, utilizing a matrix scaffold for new tissue generation. We investigate the efficacy of a micronized injectable human-derived ADM in the treatment of DFW.

View Article and Find Full Text PDF

Objectives: To examine the predictors of parent-child bonding and parenting satisfaction using structural equation models at three time points across the perinatal period: (1) during pregnancy at >24 gestational weeks, (2) one month postpartum, and (3) three months postpartum.

Methods: This longitudinal exploratory quantitative study recruited a convenient sample of 118 heterosexual couples (236 participants; 118 mothers and 118 fathers) from maternity clinics of a public tertiary hospital in Singapore. Descriptive statistics were used to summarize the parents' characteristics and study variables.

View Article and Find Full Text PDF

T cells have been identified as correlates of protection in viral infections. However, the level of vaccine-induced T cells needed and the extent to which they alone can control acute viral infection in humans remain uncertain. Here we conducted a double-blind, randomized controlled trial involving vaccination and challenge in 33 adult human volunteers, using the live-attenuated yellow fever (YF17D) and chimeric Japanese encephalitis-YF17D (JE/YF17D) vaccines.

View Article and Find Full Text PDF