Anxiety is a psychiatric non-motor symptom of Parkinson's that can appear in the prodromal period, prior to significant loss of brainstem dopamine neurons and motor symptoms. Parkinson's-related anxiety affects females more than males, despite the greater prevalence of Parkinson's in males. How stress, anxiety and Parkinson's are related and the basis for a sex-specific impact of stress in Parkinson's are not clear. We addressed this using young adult male and female mice carrying a G2019S knockin mutation of leucine-rich repeat kinase 2 ( ) and control mice. In humans, significantly elevates the risk of late-onset Parkinson's. To assess within-sex differences between and control mice in stress-induced anxiety-like behaviors in young adulthood, we used a within-subject design whereby and control mice underwent tests of anxiety-like behaviors before (baseline) and following a 28 day (d) variable stress paradigm. There were no differences in behavioral measures between genotypes in males or females at baseline, indicating that the mutation alone does not produce anxiety-like responses. Following chronic stress, male mice were affected similarly to male wildtypes except for novelty-suppressed feeding, where stress had no impact on mice while significantly increasing latency to feed in control mice. Female mice were impacted by chronic stress similarly to wildtype females across all behavioral measures. Subsequent post-stress analyses compared cFos immunolabeling-based cellular activity patterns across several stress-relevant brain regions. The density of cFos-activated neurons across brain regions in both male and female mice was generally lower compared to stressed mice, except for the nucleus accumbens of male mice, where cFos-labeled cell density was significantly higher than all other groups. Together, these data suggest that the mutation differentially impacts anxiety-like behavioral responses to chronic stress in males and females that may reflect sex-specific adaptations observed in circuit activation patterns in stress-related brain regions.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11185622 | PMC |
http://dx.doi.org/10.1101/2024.06.05.597647 | DOI Listing |
Diabet Med
December 2024
Department of Biomolecular Pharmacology, Hoshi University, Tokyo, Japan.
Aims: Skin disorders occur more frequently with sodium-dependent glucose cotransporter type 2 (SGLT2) inhibitors than with other antidiabetic drugs. We conducted basic research using ipragliflozin, with the aim of identifying new measures to prevent skin disorders caused by SGLT2 inhibitors.
Methods: db/db type 2 diabetes model mice were orally administered ipragliflozin (10 mg/kg or 30 mg/kg) once a day for 28 days and skin function genes were analysed by real-time RT-PCR or Western blotting.
Mucosal Immunol
December 2024
Kidney and Urinary Tract Center, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH 43205, USA; Division of Nephrology and Hypertension, Nationwide Children's Hospital, Columbus, OH 43215, USA. Electronic address:
The precise role of neutrophil-derived reactive oxygen species (ROS) in combating bacterial uropathogens during urinary tract infections (UTI) remains largely unexplored. In this study, we elucidate the antimicrobial significance of NADPH oxidase 2 (NOX2)-derived ROS, as opposed to mitochondrial ROS, in facilitating neutrophil-mediated eradication of uropathogenic Escherichia coli (UPEC), the primary causative agent of UTI. Furthermore, NOX2-derived ROS regulates NF-κB-mediated inflammatory responses in neutrophils against UPEC by inducing the release of nuclear factor erythroid 2-related factor 2 (Nrf2) from its inhibitor, Kelch-like ECH-associated protein 1 (Keap1).
View Article and Find Full Text PDFExp Eye Res
December 2024
Department of Biochemistry, Post-Graduate Program in Biochemistry and Post-Graduate Program in Pharmacology, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil. Electronic address:
High intraocular pressure (HIOP) and high glucose levels are associated with oxidative stress. Although physical exercise protects against oxidative damage, its specific impact on eye health remains unclear. Thus, this study aimed to assess the impact of physical exercise on the oxidative status of whole eyes in male Swiss mice subjected to HIOP model and cafeteria diet (CD).
View Article and Find Full Text PDFFood Chem
December 2024
State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address:
Diabetic nephropathy (DN) is one of the most serious and prevalent complications associated with diabetes. Consequently, antidiabetic drugs or foods potentially protecting the kidneys are of significant therapeutic value. Sulforaphene (SFE) is a natural isothiocyanate derived from radish seeds, known for its anti-inflammatory and antioxidant properties.
View Article and Find Full Text PDFActa Neuropathol Commun
December 2024
Institute of Physiology and Pathophysiology, Department of Cardiovascular Physiology, Heidelberg University, Heidelberg, Germany.
Severity and outcome of strokes following cerebral hypoperfusion are significantly influenced by stress responses of the blood vessels. In this context, brain endothelial cells (BEC) regulate inflammation, angiogenesis and the vascular resistance to rapidly restore perfusion. Despite the relevance of these responses for infarct volume and tissue recovery, their transcriptional control in BEC is not well characterized.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!