Driving pressure-guided dynamic PEEP titration reduces atelectasis and improves oxygenation in pediatric laparoscopy: a randomized trial on personalized ventilation strategies.

Background: Pediatric laparoscopic surgery often induces atelectasis due to pneumoperitoneum, postural changes, and immature respiratory physiology, increasing postoperative pulmonary complications (PPCs). Fixed PEEP may fail to address perioperative variability. This study evaluated whether dynamic PEEP adjustment reduces atelectasis and improves oxygenation.

A novel bioactive glass-based root canal sealer in endodontics.

Background/purpose: Bioactive glass (BG), one type of bioceramics, shows similar or better characteristics to calcium silicate which has been regarded as a promising root filling material in endodontics. This study aimed to develop a novel BG-based root canal sealer for endodontics.

Materials And Methods: The novel BG-based root canal sealer was composed of phytic acid derived bioactive calcium phosphosilicate glass named PSC mixed with zirconium oxide (ZrO) as powder, and phosphate solution (PS) dissolved with sodium alginate (SA) named PS-SA as liquid.

Mechanical wounding-induced laticifer differentiation in rubber tree: An indicative role of dehydration, hydrogen peroxide, and jasmonates.

The secondary laticifer in the secondary phloem of rubber tree are a specific tissue differentiating from vascular cambia. The number of the secondary laticifers is closely related to the rubber productivity of Hevea. Factors involved in the mechanical wounding-induced laticifer differentiation were analyzed by using paraffin section, gas chromatography-mass spectrometry (GC-MS), and Northern-blot techniques.