Neural–Immune Interactions: Understanding the Bidirectional Relationship between the Brain and Immune Cells

A special issue of Brain Sciences (ISSN 2076-3425). This special issue belongs to the section "Molecular and Cellular Neuroscience".

Deadline for manuscript submissions: 20 August 2025 | Viewed by 1804

Special Issue Editors


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Laboratorio de Psicoinmunología, Dirección de Investigaciones en Neurociencias, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Ciudad de México 14370, Mexico
Interests: neuroimmunoendocrinology; psychoneuroimmunology; psycho-oncology; myco-bacterial infections

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Laboratorio de Neurofarmacología Conductual, Microcirugía y Terapéutica Experimental División de Investigaciones Clínicas Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City 14370, Mexico
Interests: active vaccination; cocaine; nicotine; neurochemistry of addictions

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Centro Universitario de los Altos, Departamento de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 47610, Mexico
Interests: neuroimmunomodulation; suicidal behavior; psychiatry disorders; cytotoxicity

Special Issue Information

Dear Colleagues,

In this Special Issue, we explore the intrinsic communication between the nervous, immune and endocrine systems. The interaction of these three systems and the processes they regulate is an exciting and integral topic. In recent years, that the molecules that regulate this communication, as well as the processes in which they participate, have been extensively described. The dysregulation of this communication can be observed in the cognitive alterations associated with sickness behavior, cancer, psychiatric disorders, autoimmune, neurodegenerative diseases and drugs of abuse.

The present Special Issue aims to provide a platform for the presentation of cutting-edge knowledge that exposes novel mechanisms of interaction between the nervous, immune and endocrine systems, as well as new experimental therapies that offer benefits in multiple diseases. Our editorial team will be pleased to review your proposals and create a high-quality Special Issue.

Dr. Enrique Becerril-Villanueva
Dr. Alberto Salazar-Juárez
Dr. María Dolores Ponce-Regalado
Guest Editors

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Keywords

  • neuroimmunology
  • neuroimmunoendocrinology
  • psychiatric disorders
  • psycho-oncology
  • infectious diseases
  • sickness behavior
  • neurotransmitters
  • cytokines
  • hormones

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Published Papers (2 papers)

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Research

16 pages, 3156 KiB  
Article
NIC6-TT Vaccine Reduces Nicotine-Seeking Behavior and Expression of Nicotine-Induced Locomotor Sensitization in Rats
by Susana Barbosa Méndez and Alberto Salazar-Juárez
Brain Sci. 2025, 15(4), 364; https://doi.org/10.3390/brainsci15040364 - 31 Mar 2025
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Abstract
Introduction: Various models of nicotine vaccines have been evaluated. In humans, antibody levels are low and variable. In this sense, it is necessary to improve or optimize the nicotine vaccines already evaluated. We reported the efficacy of the M6-TT vaccine. [...] Read more.
Introduction: Various models of nicotine vaccines have been evaluated. In humans, antibody levels are low and variable. In this sense, it is necessary to improve or optimize the nicotine vaccines already evaluated. We reported the efficacy of the M6-TT vaccine. Recently, we reported the efficacy of the COC-TT vaccine, which was developed from the M6-TT vaccine. Both vaccines generate high titers of antibodies and attenuate heroin- or cocaine-induced behavioral effects in rodents. Aims and Methods: The objective of this study was to determine whether the antibodies generated by a tetanus toxoid-conjugated nicotine vaccine (NIC6-TT) can produce anti-nicotine antibodies and decrease the nicotine-induced reinforcing and psychomotor effects. Male Wistar rats were immunized with the NIC6-TT. A solid-phase antibody-capture ELISA was used to monitor antibody titer responses after each booster dose in vaccinated animals. The study used nicotine self-administration and nicotine locomotor sensitization testing to evaluate the nicotine-reinforcing and psychomotor effects. Results: The NIC6-TT vaccine could generate high and sustained levels of anti-nicotine antibodies. The antibodies reduced the nicotine self-administration and expression of nicotine locomotor sensitization. Conclusions: These findings suggest that the NIC6-TT vaccine generates a robust immunogenic response capable of reducing the reinforcing and psychomotor effects of nicotine, which supports its possible future use in clinical trials for the treatment of smokers. Implications: Smoking is the second most used psychoactive substance in the world, which is associated with millions of preventable deaths. An effective treatment is required. Nicotine vaccines must generate high levels of anti-nicotine antibodies, but above all, the decay curve of the antibodies must be very slow, so that they can provide long-term protection and support long-term smoking abstinence. The NIC6-TT vaccine meets these properties. Full article
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16 pages, 2039 KiB  
Article
The Sexual Dimorphism of the Neuroimmune Response in the Brains of Taenia crassiceps-Infected Mice
by Karen Elizabeth Nava-Castro, Diana Lizeth Ruiz-Antonio, María del Sol Ríos-Avila, Claudia Angélica Garay-Canales, Lenin Pavón, Romel Hernandez-Bello, Víctor Hugo Del Río-Araiza, Manuel Iván Girón-Pérez and Jorge Morales-Montor
Brain Sci. 2024, 14(11), 1127; https://doi.org/10.3390/brainsci14111127 - 8 Nov 2024
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Abstract
Background: Helminth infections are associated with cognitive deficits, especially in school-age children. Deworming treatment in heavily infected children improves their short- and long-term memory recall. In mice, intraperitoneal helminth infection with Taenia crassiceps (T. crassiceps) shows sexual dimorphism in terms of [...] Read more.
Background: Helminth infections are associated with cognitive deficits, especially in school-age children. Deworming treatment in heavily infected children improves their short- and long-term memory recall. In mice, intraperitoneal helminth infection with Taenia crassiceps (T. crassiceps) shows sexual dimorphism in terms of the parasite load, immune response, hormone levels, and behavioral changes. We have previously shown poorer short-term memory performance and changes in the concentrations of cytokines and neurotransmitters in the hippocampus, which were replicated in this study. The molecular changes in other brain structures, such as those related to reproduction, are unknown. Methods: Male and female Balb/cAnN mice were chronically infected with T. crassiceps larvae. We determined the peritoneal parasite load and established the presence of cytokines and neurotransmitters in the hippocampus, olfactory bulb, and hypothalamus. Results: The parasite load was higher in female than male infected mice, as expected. In the hippocampus, the neurotransmitters norepinephrine and serotonin increased in males but decreased in females. In contrast, in the olfactory bulb and hypothalamus, the neurotransmitters assessed showed no statistical differences. The cytokine profiles were different in each brain structure. The TNF-α levels in the olfactory bulb and the IL-4 levels in the hippocampus of infected mice were dimorphic; IFN-γ was augmented in both male and female infected animals, although the increase was higher in infected males. Conclusions: The brain responds to peripheral infection with cytokine levels that vary from structure to structure. This could be a partial explanation for the dimorphic behavioral alterations associated with infection, it also demonstrates the synergic interaction between the immune, the endocrine, and the nervous systems. Full article
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