Skip to main content

Aggregator

Norepinephrine signals through astrocytes to modulate synapses

4 months ago
Science, Volume 388, Issue 6748, Page 776-783, May 2025.
Katheryn B. Lefton, Yifan Wu, Yanchao Dai, Takao Okuda, Yufen Zhang, Allen Yen, Gareth M. Rurak, Sarah Walsh, Rachel Manno, Bat-Erdene Myagmar, Joseph D. Dougherty, Vijay K. Samineni, Paul C. Simpson, Thomas Papouin

Imaging quantum melting in a disordered 2D Wigner solid

4 months ago
Science, Volume 388, Issue 6748, Page 736-740, May 2025.
Ziyu Xiang, Hongyuan Li, Jianghan Xiao, Mit H. Naik, Zhehao Ge, Zehao He, Sudi Chen, Jiahui Nie, Shiyu Li, Yifan Jiang, Renee Sailus, Rounak Banerjee, Takashi Taniguchi, Kenji Watanabe, Sefaattin Tongay, Steven G. Louie, Michael F. Crommie, Feng Wang

Very good dogs

4 months ago
Science, Volume 388, Issue 6748, Page 710-710, May 2025.
Barbara J. King

Intermittent fasting reduces alpha-synuclein pathology and functional decline in a mouse model of Parkinson's disease

4 months ago
Parkinson's disease (PD) is a neurodegenerative disorder characterized by dopaminergic neuron degeneration and α-synuclein (aSyn) accumulation. Environmental factors play a significant role in PD progression, highlighting the potential of non-pharmacological interventions. This study investigates the therapeutic effects of intermittent fasting (IF) in an rAAV-aSyn mouse model of PD. IF, initiated four weeks post-induction of aSyn pathology, improved motor function and reduced dopaminergic neuron...
Éva M Szegő

Bidirectional association between physical activity and sleep in healthy Japanese super-seniors: the Japan Healthy Aging Study (J-HAS)

4 months ago
To address the challenges of an ageing population, it is important to promote health by identifying factors for healthy ageing. The aim of this study was to investigate the bidirectional association between physical activity (PA) and sleep in healthy Japanese super-seniors over the age of 80. For approximately 1 year, 124 participants wore wearable devices and answered daily lifestyle questionnaires. PA was defined as daily step count and minutes in light activity. Sleep was measured using 24-h...
Helena Pham

Age-related decline in IgM responses associate with reduced opsonophagocytic activity following PCV13 vaccination

4 months ago
Pneumococcal vaccination is crucial in preventing Streptococcus pneumoniae infections in older adults. However, vaccine responses often diminish with age. This study investigates serotype-specific IgM and IgG responses in relation to opsonophagocytic activity (OPA) following thirteen-valent pneumococcal conjugate (PCV13) vaccination in younger (26-49 y; n = 44), middle-aged (50-64 y; n = 71), and older adults (65-98 y; n = 141). Both OPA and IgM responses declined with age, while IgG responses...
M Visser

Cartilage degradation is followed by PAC1 receptor reduction in articular cartilage of human knee joints

4 months ago
Pituitary adenylate cyclase activating polypeptide (PACAP) is a neuropeptide expressed in the nervous system and also in various peripheral tissues, including the musculoskeletal system. PACAP has an important function in the regulation of chondrogenesis and plays a protective role in cartilage oxidative and mechanical stress. PACAP knockout (KO) mice show early signs of aging and osteoarthritis in knee joint articular cartilage. Its specific, most potent receptor is the PAC1 receptor, the...
Kálmán Rácz

Small-molecule dissolution of stress granules by redox modulation benefits ALS models

4 months ago
Neurodegenerative diseases, such as amyotrophic lateral sclerosis, are often associated with mutations in stress granule proteins. Aberrant stress granule condensate formation is associated with disease, making it a potential target for pharmacological intervention. Here, we identified lipoamide, a small molecule that specifically prevents cytoplasmic condensation of stress granule proteins. Thermal proteome profiling showed that lipoamide stabilizes intrinsically disordered domain-containing...
Hiroyuki Uechi

Aging and injury drive neuronal senescence in the dorsal root ganglia

4 months ago
Aging negatively impacts central nervous system function; however, there is limited information about the cellular impact of aging on peripheral nervous system function. Importantly, injury to vulnerable peripheral axons of dorsal root ganglion (DRG) neurons results in somatosensory dysfunction, such as pain, at higher rates in aged individuals. Cellular senescence is common to both aging and injury and contributes to the aged pro-inflammatory environment. We discovered DRG neuron senescence in...
Lauren J Donovan

Impact of multidimensional assessment on anti-fracture treatment decisions in patients with fragility hip fractures within a Fracture Liaison Service

4 months ago
CONCLUSION: The integration of the MPI into multidisciplinary taking care of old patients with hip fractures may provide a structured approach for individualizing treatment decisions, considering aspects such as prognosis, functional autonomy, and cognitive status. Further studies are needed to validate the long-term outcomes of this approach.
Chiara Ceolin

The role of dopaminergic medication and specific pathway alterations in idiopathic and PRKN/PINK1-mediated Parkinson's disease

4 months ago
Parkinson's disease (PD) is the second most common neurodegenerative disease, with a rapidly increasing prevalence worldwide. Biomarkers monitoring state and progression are urgently needed, and metabolomics from easily accessible biofluids holds the potential to elucidate pathophysiological underpinnings in PD. Several studies suggested metabolomic differences between patients and controls, but findings are controversial, and independent replication is scarce. We thus applied state-of-the-art,...
Alexander Balck