Alterations in the Glymphatic System and Presence of Small Vessel Disease in Hospitalized and Non-hospitalized COVID Patients: A Study of PSMD Index and DTI-ALPS.

Background: It is known that COVID-19 causes brain damage in the acute phase and leads to neurological complications such as dementia and brain fog in the chronic phase. Many factors have been implicated in these complications, including glymphatic system disorders, small vessel disease, and widespread inflammation. Peak width of skeletonized mean diffusivity (PSMD) is a sensitive biomarker for SVD, while the diffusion tensor image analysis along the perivascular space (DTI-ALPS) measures glymphatic system function.

Anterior cruciate ligament tissue stiffness and anterior tibial translation are increased in patients with medial meniscus posterior root tear.

Introduction: To evaluate the structural and functional relationship between medial meniscus posterior root tear (MMPRT) and anterior cruciate ligament (ACL), the aim was to assess the structure and elasticity of the ACL in patients with MMPRT and to measure tibial anterior translation.

Materials And Methods: Between January and June 2024, 56 patients (study group) were diagnosed with unilateral MMPRT on magnetic resonance imaging (MRI) and 31 healthy volunteers (control group) were included in the study. While the tibial anterior translation of the patients was evaluated using the KT 1000 device, the structure and stiffness of the ACL were assessed with ultrasound shear wave elastography (SWE).

Effects of chronic light/dark cycle on iron zinc and copper levels in different brain regions of rats.

In this study, we aimed to investigate whether chronic shift in light/dark cycle alters brain trace element concentrations. For this purpose, 20 male Wistar albino adult rats were weighed and randomly divided into three groups. The first group (n = 6) was the control and had been subjected to 12/12-h light/dark cycle for 30 days.