Neonatal methicillin-resistant pneumonia-related recurrent fatal pyopneumothorax: A case report and review of literature.

Background: Although neonatal pneumonia is common and usually curable, it can also be refractory and life-threatening. Herein, we report a case of severe neonatal community-acquired methicillin-resistant (CA-MRSA) necrotizing pneumonia with bilateral recurrent pyopneumothorax, respiratory failure, heart failure, and cardiac arrest. We hope our report will add to the understanding of this disease.

Bioinspired Hydrogel-Polymer Hybrids with a Tough and Antifatigue Interface via One-Step Polymerization.

Hydrogel hybrids are one of the key factors in life activities and biomimetic science; however, their development and utilization are critically impeded by their inadequate adhesive strength and intricate process. In nature, barnacles can stick to a variety of solid surfaces firmly (adhesive strength above 300 kPa) using a hydrophobic interface, which inspires us to firmly combine hydrogels and polymers through introducing an adhesive layer. By spreading a hydrophobic liquid membrane directly, tough combination of a hydrogel and a polymer substrate could be achieved after one-step polymerization.

[Effect of maxillary protraction with or without rapid palatal expansion in treating early skeletal Class III malocclusion].

Objective: To evaluate the effectiveness of treatment with maxillary protraction with or without rapid palatal expansion (RPE) for skeletal Class III malocclusion in mixed dentition.

Methods: A total of 31 children with Class III malocclusion in mixed dentition were selected, and 15 (group A) received maxillary protraction treatment with RPE, the other 16 (group B) received maxillary protraction without RPE. Cephalometric films were taken before and after treatment, and traditional and Pancherz analysis were used.