Investigation on the Awareness and Behavior of Primary School Students on Sunscreen Use in Beijing.

Objective: This study aims to understand primary school students' behavior and awareness of sun exposure and sunscreen in Beijing, China.

Methods: A questionnaire survey was conducted of 232 students in grades 4-6 at a public primary school in Beijing, including 129 boys (55.6%) and 103 girls (44.

Delayed complication of botulinum toxin and hyaluronic acid filler injections: A case report.

Background: Botulinum toxin and hyaluronic acid (HA) filler injections are popular minimally invasive cosmetic procedures owing to their convenience, efficiency, and durability; however, adverse reactions often occur.

Materials And Methods: We describe the delayed hypersensitivity reaction that occurred after sequential injections of botulinum toxin and HA filler.

Results: The histopathologic and dermatoscopic findings suggested a delayed hypersensitivity reaction with the formation of a dermal foreign body granuloma.

Laser therapy in the treatment of melasma: a systematic review and meta-analysis.

Melasma is a highly prevalent and cosmetically disfiguring pigmented skin disease. The post-treatment results are often unsatisfactory. A large number of clinical trials have tried to prove the effectiveness of the combination therapy involving laser therapy, but the results have been indeterminate.

Treponema pallidum-specific antibody expression for the diagnosis of different stages of syphilis.

Background: Tp15, Tp17, Tp45, and Tp47 are outer-membrane proteins found in Treponema pallidum, the etiologic agent of syphilis. These proteins are potent antigens and are potential markers for the serological detection of syphilis. The present study analyzed antibodies to these protein antigens (TP-IgM and TP-IgG) in human serum and investigated the expression of these antibodies during different stages of syphilis.

Recurrent antitopographic inhibition mediates competitive stimulus selection in an attention network.

Topographically organized neurons represent multiple stimuli within complex visual scenes and compete for subsequent processing in higher visual centers. The underlying neural mechanisms of this process have long been elusive. We investigate an experimentally constrained model of a midbrain structure: the optic tectum and the reciprocally connected nucleus isthmi.

Generating oscillatory bursts from a network of regular spiking neurons without inhibition.

Avian nucleus isthmi pars parvocellularis (Ipc) neurons are reciprocally connected with the layer 10 (L10) neurons in the optic tectum and respond with oscillatory bursts to visual stimulation. Our in vitro experiments show that both neuron types respond with regular spiking to somatic current injection and that the feedforward and feedback synaptic connections are excitatory, but of different strength and time course. To elucidate mechanisms of oscillatory bursting in this network of regularly spiking neurons, we investigated an experimentally constrained model of coupled leaky integrate-and-fire neurons with spike-rate adaptation.