Hypoxia-Preconditioned Adipose Stem Cell Exosomes Promote Adipose Graft Vascular Regeneration via miRNA-126.

Background And Objective: Adipose-derived mesenchymal stem cell-derived extracellular vesicles (ASCs-Exos) possess angiogenic potential, which can enhance the retention rate of fat grafts. Hypoxic preconditioning can augment their functionality. However, the optimal conditions for hypoxic preconditioning and the specific mechanisms by which it exerts its effects are not well defined.

Structural insights into signaling promiscuity of the CBASS anti-phage defense system from a radiation-resistant bacterium.

Radiation-resistant bacteria are of great application potential in various fields, including bioindustry and bioremediation of radioactive waste. However, how radiation-resistant bacteria combat against invading phages is seldom addressed. Here, we present a series of crystal structures of a sensor and an effector of the cyclic oligonucleotide-based anti-phage signaling system (CBASS) from a radioresistant bacterium Deinococcus wulumuqiensis.

Comparative genetic analysis of blood and semen samples in sperm donors from Hunan, China.

Objectives: At present, most genetic tests or carrier screening are performed with blood samples, and the known carrier rate of disease-causing variants is also derived from blood. For semen donors, what is really passed on to offspring is the pathogenic variant in their sperm. This study aimed to determine whether pathogenic variants identified in the sperm of young semen donors are also present in their blood, and whether matching results for blood are consistent with results for sperm.

Current status and strategies for controlling hexachlorobutadiene from multiple perspectives of emission, occurrence, and disposal.

Hexachlorobutadiene (HCBD), as an emerging persistent organic pollutant, poses a pressing global environmental issue concerning its reduction and control. However, the lack of systematic studies on the sources and occurrence of HCBD hinders the development of effective disposal technologies. This study addresses HCBD prevention and treatment from multiple perspectives, including source emissions, environmental contamination distribution, and control technologies.

Lower limb joint reaction forces during sit-to-stand and stand-to-sit movements in stroke patients with spastic hemiplegia.

Objective: We investigated the characteristics of hip, knee, and ankle joint reaction forces (JRFs) in stroke patients with spastic hemiplegia during sit-to-stand (Si-St) and stand-to-sit (St-Si) movements and explored the relationship between JRFs and joint moments.

Methods: Thirteen stroke patients with spastic hemiplegia and thirteen age-matched healthy subjects were recruited in this study. Three-dimensional motion capture system and force plates were employed to collect kinematic data and ground reaction forces during Si-St and St-Si tasks.