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Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections and gut microbiota composition: what do we know?
Front Nutr
January 2025
Department of Pediatrics, Vittore Buzzi Children's Hospital, University of Milan, Milan, Italy.
Post-streptococcal autoimmune neuropsychiatric disorders (PANDAS) are a group of pathological condition characterized by sudden-onset obsessive-compulsive and tic disorders following beta-hemolytic Streptococcus group A (GAS) infection, hypothesized to be caused by autoimmune mechanisms targeting the basal ganglia. Scant literature is available regarding the microbiota composition in children with PANDAS, however few studies support the hypothesis that streptococcal infections may alter gut microbiota composition in these patients, leading to chronic inflammation that may impact the brain function and behavior. Notable changes include reduced microbial diversity and shifts in bacterial populations, which affect metabolic functions crucial for neuroinflammation.
View Article and Find Full Text PDFEffects of chronic ethanol exposure on dorsal medial striatal neurons receiving convergent inputs from the orbitofrontal cortex and basolateral amygdala.
Neuropharmacology
January 2025
Department of Neuroscience, USA; Department of Psychiatry and Behavioral Sciences, Addiction Sciences Division, Medical University of South Carolina, Charleston, SC, 29425, USA. Electronic address:
Alcohol use disorder is associated with altered function of cortical-amygdala-striatal circuits such as the orbitofrontal cortex (OFC), basolateral amygdala (BLA) and their connections to the dorsal medial striatum (DMS) shown to be involved in goal-directed actions. Using retrobead tracing, we previously reported enhanced excitability of DMS-projecting OFC neurons in mice following 3-to-7-day withdrawal from chronic intermittent ethanol (CIE) exposure. In the same animals, spiking of DMS-projecting BLA neurons was decreased at 3-days post-withdrawal followed by an increase in firing at 7- and 14-days.
View Article and Find Full Text PDFObjective: This study investigated whether the behavior profiles of cats with inflammatory gastrointestinal or skin diseases differ from those of healthy cats.
Methods: We identified adult cats within the patient database at the University of Pennsylvania's veterinary hospital that had been diagnosed with inflammatory gastrointestinal (n = 22) or skin disorders (17) and a control group of healthy cats (58). We collected data via owner completion of the Feline Behavioral Assessment & Research Questionnaire from March to May 2023 and conducted an observational study comparing the Feline Behavioral Assessment & Research Questionnaire scores between groups.
Neurosurgery for mental conditions and pain: An historical perspective on the limits of biological determinism.
Surg Neurol Int
December 2024
Department of Psychiatry, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, United States.
Neurosurgical operations treat involuntary movement disorders (MvDs), spasticity, cranial neuralgias, cancer pain, and other selected disorders, and implantable neurostimulation or drug delivery devices relieve MvDs, epilepsy, cancer pain, and spasticity. In contrast, studies of surgery or device implantations to treat chronic noncancer pain or mental conditions have not shown consistent evidence of efficacy and safety in formal, randomized, controlled trials. The success of particular operations in a finite set of disorders remains at odds with disconfirming results in others.
View Article and Find Full Text PDFChronic Tic Disorders in Youth: Clinical Phenotypes and Response to Pharmacological Treatment with Aripiprazole.
Children (Basel)
November 2024
Developmental Psychiatry and Psycopharmacology Unit, IRCCS Stella Maris Foundation, 311 viale del Tirreno, 56018 Pisa, Italy.
Background/objectives: Tic disorders are neurodevelopmental conditions often associated with comorbidities like attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). Our aims were: (a) in a sample of youth with tic disorders to explore the clinical and psychopathological characteristics of different phenotypes based on the presence of comorbid ADHD and/or ASD and gender; (b) in a subgroup of patients treated with Aripiprazole, to evaluate symptoms variation over time and to identify potential predictors of response.
Methods: A total of 95 subjects with tic disorders (age range 6 to 17.
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