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Hemispheric asymmetry in neurodegenerative diseases.
Handb Clin Neurol
March 2025
University School for Advanced Studies (IUSS-Pavia), Pavia, Italy; Dementia Research Center, IRCCS Mondino Foundation, Pavia, Italy. Electronic address:
Hemispheric asymmetry in pathologic involvement is frequently observed in neurodegenerative disorders (NDD) and is responsible for differences in cognitive and motor clinical manifestations in individual patients. While asymmetry is modest in typical Alzheimer disease (AD), atypical AD presentations with prominent language impairment [logopenic/phonologic variant of primary progressive aphasia (L/Phv-PPA)] are associated with prevalent involvement of the language-dominant hemisphere. Similarly, in the frontotemporal dementia-amyotrophic lateral sclerosis (FTD-ALS) spectrum, the semantic (Sv) and nonfluent/agrammatic (Nf/Av) variants of PPA are due to asymmetric pathology involving the language-dominant hemisphere.
View Article and Find Full Text PDFMechanisms of cognitive impairment associated with cerebral infarction.
Zhong Nan Da Xue Xue Bao Yi Xue Ban
October 2024
Department of Neurology, Second Xiangya Hospital, Central South University, Changsha 410011, China.
Cerebral infarction is a common type of stroke with high incidence and disability rates, and most patients experience varying degrees of cognitive impairment. The manifestations and severity of post-infarction cognitive impairment are influenced by multiple interacting factors, and its pathophysiological mechanisms are highly complex, involving pericyte degeneration, excessive generation of reactive oxygen species (ROS), overproduction of glutamate, and overactivation of autophagy. After cerebral infarction, abnormal pericyte function activates neuroinflammation and facilitates the entry of inflammatory mediators into the brain; detachment of pericytes from blood vessels disrupts the integrity of the blood-brain barrier.
View Article and Find Full Text PDFEvidence and Recommendation for Infantile Krabbe Disease Newborn Screening.
Pediatrics
March 2025
Division of Primary Care Pediatrics, Nationwide Children's Hospital, Columbus, Ohio.
Krabbe disease (KD), which affects 0.3-2.6 per 100 000 live births, is an autosomal recessive lysosomal disorder caused by variants in the GALC gene that reduce galactosylceramidase (GALC) activity, leading to psychosine accumulation, cerebral white matter degeneration, and peripheral neuropathy.
View Article and Find Full Text PDF20-Week Toxicity Study of Rotigotine Behenate Extended-Release Microspheres for Intramuscular Injection in Sprague Dawley Rats.
Food Chem Toxicol
March 2025
School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264003, China. Electronic address:
Based on the concept of continuous dopaminergic stimulation (CDS), Rotigotine Behenate extended-release microspheres for injection (RBEM) are currently under development. To support human clinical trials of RBEM, a 20-week repeat-dose toxicity study was conducted. SD rats intramuscularly received RBEM (60, 180, and 540 mg/kg) once every 4 weeks for 5 repeated doses followed by a 12-week recovery period, no clear sex difference was noted in the plasma exposure of rotigotine in rats, and the exposure generally increased in a dose-proportional manner.
View Article and Find Full Text PDFDirect Cytosolic Delivery of siRNA Conjugates: A Paradigm in Antiangiogenic Therapy for Choroidal Neovascularization.
ACS Nano
March 2025
Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Shanghai 200080, China.
Small interfering RNA (siRNA) has garnered tremendous interest as a potential therapeutic tool because of its intriguing gene-silencing ability. Toward the success in the manufacture of siRNA therapeutics for the potential treatment of choroidal neovascularization (CNV), siRNA conjugated with dual functional units of membrane-penetrating heptafluoropropyl and age-related macular degeneration-targeting cyclic Arg-Gly-Asp (RGD) peptide was attempted for transcellular transportation into the cell interiors. Of note, cyclic RGD allowed selective affinities toward the angiogenic endothelial cells in the pathological CNV.
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