Pharmacological Therapies for Stress-Related Disorders and Autism Spectrum Disorder

A special issue of Pharmaceuticals (ISSN 1424-8247). This special issue belongs to the section "Pharmacology".

Deadline for manuscript submissions: 25 February 2025 | Viewed by 6452

Special Issue Editors


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Guest Editor
Medical School, Institute of Physiology, University of Pécs, Szigeti Str. 12, P.O. Box 99, 7602 Pécs, Hungary
Interests: stress-related disorders; PTSD; neuropeptides; RFamide peptides; antidepressants; ASD
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Medical School, Institute of Physiology, University of Pécs, Szigeti Str. 12, P.O. Box 99, 7602 Pécs, Hungary
Interests: ASD; electrophysiology; microbiome; bioimpedance spectrum; homeostasis

Special Issue Information

Dear Colleagues,

In this Special Issue, we aim to present well-known and new therapeutic agents and strategies for the treatment of stress-related disorders, such as posttraumatic stress disorder, major depressive disorder and anxiety disorders (also including autism spectrum disorder (ASD), as anxiety disorders are the most common comorbid conditions in these patients).

Several types of anxieties can be associated with ASD. ASD and anxiety greatly overlap; however, the reason for this overlap is unclear. Genetic studies reveal that ASD overlaps with other psychiatric illnesses. Research indicates that the neurobiological interactions between anxiety and ASD require comprehensive assessment approaches, modified cognitive behavioral therapy and carefully managed pharmacological interventions.

Selective serotonin reuptake inhibitors (SSRIs) and serotonin–norepinephrine reuptake inhibitors (SNRIs) are the first choice as pharmacological treatment of anxiety disorder in the general population. Depression disorder is a common heterogeneous mental disease that affects all aspects of patients’ lives, as well as people around them. Nowadays, ADs are divided into five classes: SSRIs, SNRIs, TCAs, MAOIs and atypical ADs with unique mechanisms of action. The development of new drugs and methods for depression treatment is critical. Nowadays, the therapy of anxiety in ASD includes cognitive-behavioral therapy and psychopharmacological treatment.

In this Special Issue, we want to expand the knowledge on antidepressant drugs and their mechanism of action. Pharmacological interventions show promise for typically developing populations, but further research is needed to establish the efficacy of medications for individuals. Because comorbid ASD/anxiety remains a nascent and developing area of study, practitioners are encouraged to publish the latest scientific findings.

The gut-brain axis plays a significant role in the development of behavioral disorders and neurological diseases. Changes in the microbial flora can also be observed in the case of certain neuropsychiatric diseases, such as ASD, schizophrenia, depression, and Parkinson's disease. The conditions characteristic of each disease can be induced by fecal transplantation from a patient in a germ-free model animal experiment. During the treatment of the microbial flora with pro- or pre-biotics, behavioral changes similar to the control can be induced. All this suggests that the modification of the microbial flora can play a significant role in the development of ASD and in its possible treatment later on.

Dr. Anita Kovács
Dr. Attila Tóth
Guest Editors

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Keywords

  • new targets and therapies for stress-related disorders
  • molecular mechanism of drugs
  • ASD, PTSD, MDD
  • antidepressant
  • depression
  • animal model for depression
  • ASD
  • microbiome
  • gut-brain axis
  • brain electrophysiology
  • neuron activity in ASD

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Published Papers (3 papers)

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Research

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16 pages, 1774 KiB  
Article
R-Baclofen Treatment Corrects Autistic-like Behavioral Deficits in the RjIbm(m):FH Fawn-Hooded Rat Strain
by Anita Varga, Rita Kedves, Katalin Sághy, Dénes Garab, Ferenc Zádor, Balázs Lendvai, György Lévay and Viktor Román
Pharmaceuticals 2024, 17(7), 939; https://doi.org/10.3390/ph17070939 - 13 Jul 2024
Viewed by 678
Abstract
The Fawn-hooded rat has long been used as a model for various peripheral and central disorders and the data available indicate that the social behavior of this strain may be compromised. However, a thorough description of the Fawn-hooded rat is unavailable in this [...] Read more.
The Fawn-hooded rat has long been used as a model for various peripheral and central disorders and the data available indicate that the social behavior of this strain may be compromised. However, a thorough description of the Fawn-hooded rat is unavailable in this regard. The objective of the present study was to investigate various aspects of the Fawn-hooded rat’s social behavior in depth. Our results show that several facets of socio-communicational behavior are impaired in the RjIbm(m):FH strain, including defective ultrasonic vocalizations in pups upon maternal deprivation, reduced social play in adolescence and impaired social novelty discrimination in adulthood. In addition, Fawn-hooded rats exhibited heightened tactile sensitivity and hyperactivity. The defects observed were comparable to those induced by prenatal valproate exposure, a widely utilized model of autism spectrum disorder. Further on, the pro-social drug R-baclofen (0.25–1 mg/kg) reversed the autistic-like defects observed in Fawn-hooded rats, specifically the deficiency in ultrasonic vocalization, tactile sensitivity and social novelty discrimination endpoints. In conclusion, the asocial, hypersensitive and hyperactive phenotype as well as the responsivity to R-baclofen indicate this variant of the Fawn-hooded rat strain may serve as a model of autism spectrum disorder and could be useful in the identification of novel drug candidates. Full article
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19 pages, 2909 KiB  
Article
Clinical and Family Implications of Cannabidiol (CBD)-Dominant Full-Spectrum Phytocannabinoid Extract in Children and Adolescents with Moderate to Severe Non-Syndromic Autism Spectrum Disorder (ASD): An Observational Study on Neurobehavioral Management
by Jeanne Alves de Souza Mazza, Lisiane Seguti Ferreira, Alice de Faria Martins-Vieira, Doris Day Lopes Beserra, Victor Alves Rodrigues, Renato Malcher-Lopes and Fabio V. Caixeta
Pharmaceuticals 2024, 17(6), 686; https://doi.org/10.3390/ph17060686 - 27 May 2024
Viewed by 3943
Abstract
Autism Spectrum Disorder (ASD) encompasses a wide range of neurodevelopmental conditions characterized by deficits in social interaction, communication and behavior. Current pharmacological options are limited and feature significant side effects. In this study, we conducted a retrospective, observational, and cross-sectional cohort study to [...] Read more.
Autism Spectrum Disorder (ASD) encompasses a wide range of neurodevelopmental conditions characterized by deficits in social interaction, communication and behavior. Current pharmacological options are limited and feature significant side effects. In this study, we conducted a retrospective, observational, and cross-sectional cohort study to evaluate the effects of Cannabidiol (CBD)-dominant, full-spectrum cannabis extract, containing Tetrahydrocannabinol (THC) in a ratio of 33:1 (CBD:THC), on non-syndromic children and adolescents (5–18 years old) with moderate to severe ASD. Thirty volunteers were recruited, underwent neuropsychological evaluations and were treated with individualized doses of CBD-dominant extract. Clinical assessments were conducted by the designated clinician. Additionally, parents or caregivers were independently interviewed to assess perceived treatment effects. We found significant improvements in various symptomatic and non-symptomatic aspects of ASD, with minimal untoward effects, as reported by both clinical assessments and parental perceptions. The observed improvements included increased communicative skills, attention, learning, eye contact, diminished aggression and irritability, and an overall increase in both the patient’s and family’s quality of life. Despite its limitations, our findings suggest that treatment with full-spectrum CBD-dominant extract may be a safe and effective option for core and comorbid symptoms of ASD, and it may also increase overall quality of life for individuals with ASD and their families. Full article
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Review

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34 pages, 2705 KiB  
Review
Targeting Microglia in Neuroinflammation: H3 Receptor Antagonists as a Novel Therapeutic Approach for Alzheimer’s Disease, Parkinson’s Disease, and Autism Spectrum Disorder
by Shilu Deepa Thomas, Sabna Abdalla, Nermin Eissa, Amal Akour, Niraj Kumar Jha, Shreesh Ojha and Bassem Sadek
Pharmaceuticals 2024, 17(7), 831; https://doi.org/10.3390/ph17070831 - 25 Jun 2024
Cited by 3 | Viewed by 1347
Abstract
Histamine performs dual roles as an immune regulator and a neurotransmitter in the mammalian brain. The histaminergic system plays a vital role in the regulation of wakefulness, cognition, neuroinflammation, and neurogenesis that are substantially disrupted in various neurodegenerative and neurodevelopmental disorders. Histamine H3 [...] Read more.
Histamine performs dual roles as an immune regulator and a neurotransmitter in the mammalian brain. The histaminergic system plays a vital role in the regulation of wakefulness, cognition, neuroinflammation, and neurogenesis that are substantially disrupted in various neurodegenerative and neurodevelopmental disorders. Histamine H3 receptor (H3R) antagonists and inverse agonists potentiate the endogenous release of brain histamine and have been shown to enhance cognitive abilities in animal models of several brain disorders. Microglial activation and subsequent neuroinflammation are implicated in impacting embryonic and adult neurogenesis, contributing to the development of Alzheimer’s disease (AD), Parkinson’s disease (PD), and autism spectrum disorder (ASD). Acknowledging the importance of microglia in both neuroinflammation and neurodevelopment, as well as their regulation by histamine, offers an intriguing therapeutic target for these disorders. The inhibition of brain H3Rs has been found to facilitate a shift from a proinflammatory M1 state to an anti-inflammatory M2 state, leading to a reduction in the activity of microglial cells. Also, pharmacological studies have demonstrated that H3R antagonists showed positive effects by reducing the proinflammatory biomarkers, suggesting their potential role in simultaneously modulating crucial brain neurotransmissions and signaling cascades such as the PI3K/AKT/GSK-3β pathway. In this review, we highlight the potential therapeutic role of the H3R antagonists in addressing the pathology and cognitive decline in brain disorders, e.g., AD, PD, and ASD, with an inflammatory component. Full article
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