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The Role of CBGTC Synaptic Neurotransmission in the Pathophysiology of Tics.
Psychiatr Clin North Am
March 2025
Department of Neurology, Johns Hopkins University School of Medicine, Kennedy Krieger Institute, Baltimore, MD, USA.
The pathophysiology of tic disorders involves an alteration in the transmission of messages through the cortico-basal ganglia-thalamo-cortical circuit. A major requirement for the passage of a message through this circuit is an intact chemically mediated synaptic neurotransmitter system (ie, neurotransmitters and second messengers). This article reviews the scientific evidence supporting the involvement of a variety of neurotransmitters (ie, dopamine, glutamate, gamma-aminobutyric acid, serotonin, acetylcholine, and the opioid system).
View Article and Find Full Text PDFThe Pathophysiology of Tics: An Anatomic Review.
Psychiatr Clin North Am
March 2025
Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Kennedy Krieger Institute, Baltimore, MD, USA.
The underlying pathophysiology of tics in Tourette syndrome is a topic of major scientific interest. To date, there is an absence of consensus among researchers regarding the precise anatomic location responsible for tics. The goal of this article is to review the current understanding of these brain circuits and data supporting specific anatomic regions.
View Article and Find Full Text PDFUnraveling the dual role of bilirubin in neurological Diseases: A Comprehensive exploration of its neuroprotective and neurotoxic effects.
Brain Res
January 2025
Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga 142001, Punjab, India. Electronic address:
Neurodegenerative disorders are characterized by a progressive loss of neurons, causing substantial deficits in motor and cognitive functioning. Bilirubin is a yellow by-product of heme, existing in two primary isoforms namely unconjugated and conjugated, while initially produced unconjugated isomer is lipophilic and cytotoxic in nature. At physiological levels, bilirubin has an important role in brain function by acting as a powerful antioxidant, preventing brain tissues from oxidative damage by eliminating reactive oxygen species (ROS).
View Article and Find Full Text PDFA Biopsychosocial Overview of Speech Disorders: Neuroanatomical, Genetic, and Environmental Insights.
Biomedicines
January 2025
Department of Anatomy & Cell Biology, Oklahoma State University Center for Health Sciences, Tulsa, OK 74107, USA.
Speech disorders encompass a complex interplay of neuroanatomical, genetic, and environmental factors affecting individuals' communication ability. This review synthesizes current insights into the neuroanatomy, genetic underpinnings, and environmental influences contributing to speech disorders. Neuroanatomical structures, such as Broca's area, Wernicke's area, the arcuate fasciculus, and basal ganglia, along with their connectivity, play critical roles in speech production, comprehension, and motor coordination.
View Article and Find Full Text PDFCharacterizing the underlying microangiopathy of deep cerebellar intracerebral hemorrhage.
J Neurol
January 2025
Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Introduction: While cerebral amyloid angiopathy is likely responsible for intracerebral hemorrhage (ICH) occurring in superficial (grey matter, vermis) cerebellar locations, it is unclear whether hypertensive arteriopathy (HA), the other major cerebral small vessel disease (cSVD), is associated with cerebellar ICH (cICH) in deep (white matter, deep nuclei, cerebellar peduncle) regions. We tested the hypothesis that HA-associated neuroimaging markers are significantly associated with deep cICH compared to superficial cICH.
Patients And Methods: Brain MRI scans from consecutive non-traumatic cICH patients admitted to a referral center were analyzed for cSVD markers.
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