Topology-based segmentation of 3D confocal images of emerging hematopoietic stem cells in the zebrafish embryo.

We develop a novel method for image segmentation of 3D confocal microscopy images of emerging hematopoietic stem cells. The method is based on the theory of persistent homology and uses an optimal threshold to select the most persistent cycles in the persistence diagram. This enables the segmentation of the image's most contrasted and representative shapes.

Evaluation of the Effectiveness of Different Types of Professional Tooth Whitening: A Systematic Review.

Background/objectives: Tooth whitening is a cosmetic dental treatment that improves the color of natural teeth, making them whiter and brighter; this review aimed to evaluate the greater effectiveness of in-office, at-home, and combined bleaching with hydrogen or carbamide peroxide, also in relation to possible relapses and side effects (tooth sensitivity).

Methods: A literature search has been carried out through electronic databases, PubMed/MEDLINE, and Cochrane Library, focused on the use of the effectiveness of in-office, at-home, and combined dental bleaching. This review has been registered on PROSPERO (ID613248).

Coronary Plaque Characteristics Assessed by Optical Coherence Tomography and Plasma Lipoprotein(a) Levels in Patients With Acute Coronary Syndrome.

Background: Lipoprotein(a) [Lp(a)] is associated with increased cardiovascular risk, but its influence on plaque characteristics at optical coherence tomography (OCT) evaluation is not fully understood.

Aims: This study seeks to explore the impact of Lp(a) levels on plaque morphology as assessed by OCT in a very high-risk subset of patients.

Methods: Consecutive patients admitted for acute coronary syndrome (ACS) and undergoing OCT-guided percutaneous coronary intervention (PCI) at a large tertiary care center between 2019 and 2022 were deemed eligible for the current analysis.

A checklist of Iranian Aderidae (Coleoptera: Tenebrionoidea).

The fauna of Iranian Aderidae (Coleoptera: Tenebrionoidea) includes five species within four genera, Aderus Stephens, 1829 (one species), Cobososia Collado & Alonso-Zarazaga, 1996 (two), Gompelia Alonso-Zarazaga, 2010 (one) and Phytobaenus R.F. Sahlberg, 1834 (one).