Clin Dev Immunol
Laboratory of Neuroimmunoendocrinology, National Institute of Neurology and Neurosurgery "Manuel Velasco Suárez", Avenida Insurgentes Sur 3877, La Fama, Tlalpan, 14269 Mexico City, DF, Mexico.
Published: June 2014
Deep brain stimulation (DBS) is a therapeutic option for several diseases, but its effects on HPA axis activity and systemic inflammation are unknown. This study aimed to detect circulatory variations of corticosterone and cytokines levels in Wistar rats, after 21 days of DBS-at the ventrolateral part of the ventromedial hypothalamic nucleus (VMHvl), unilateral cervical vagotomy (UCVgX), or UCVgX plus DBS. We included the respective control (C) and sham (S) groups (n = 6 rats per group). DBS treated rats had higher levels of TNF-α (120%; P < 0.01) and IFN-γ (305%; P < 0.001) but lower corticosterone concentration (48%; P < 0.001) than C and S. UCVgX animals showed increased corticosterone levels (154%; P < 0.001) versus C and S. UCVgX plus DBS increased IL-1β (402%; P < 0.001), IL-6 (160%; P < 0.001), and corsticosterone (178%; P < 0.001 versus 48%; P < 0.001) compared with the C and S groups. Chronic DBS at VMHvl induced a systemic inflammatory response accompanied by a decrease of HPA axis function. UCVgX rats experienced HPA axis hyperactivity as result of vagus nerve injury; however, DBS was unable to block the HPA axis hyperactivity induced by unilateral cervical vagotomy. Further studies are necessary to explore these findings and their clinical implication.
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http://dx.doi.org/10.1155/2013/698634 | DOI Listing |
PLoS One
January 2025
Department of Pain Medicine, Aichi Medical University, Nagakute, Aichi, Japan.
Background: Lowering barometric pressure (LP) can exacerbate neuropathic pain. However, animal studies in this field are limited to a few conditions. Furthermore, although sympathetic involvement has been reported as a possible mechanism, whether the sympathetic nervous system is involved in the hypothalamic-pituitary-adrenal (HPA) axis remains unknown.
View Article and Find Full Text PDFAm J Biol Anthropol
January 2025
School of Anthropology and Archaeology, The Australian National University, Canberra, Australian Capital Territory, Australia.
Introduction: Adverse experiences leading to physiological disruptions (stress) in early life produce cascade effects on various biological systems, including the endocrine and metabolic systems, which, in turn, shape the developing skeletal system. To evaluate the effects of stress on adipose and skeletal tissues, we examine the relationship between skeletal indicators of stress (porotic hyperostosis [PH] and cribra orbitalia [CO]), bone mineral density (BMD), vertebral neural canal (VNC) diameters, and adipose tissue distribution in a contemporary pediatric autopsy sample.
Methods: Data is from 702 (409 males, 293 females) individuals from a pediatric (0.
Subcell Biochem
January 2025
Department of Biology and Biotechnologies C. Darwin, Sapienza University of Rome, Rome, Italy.
Epigenetic mechanisms are key processes that constantly reshape genome activity carrying out physiological responses to environmental stimuli. Such mechanisms regulate gene activity without modifying the DNA sequence, providing real-time adaptation to changing environmental conditions. Both favorable and unfavorable lifestyles have been shown to influence body and brain by means of epigenetics, leaving marks on the genome that can either be rapidly reversed or persist in time and even be transmitted trans-generationally.
View Article and Find Full Text PDFStress
December 2025
Department of Preclinical Fluid Biomarkers & Occupancy, H. Lundbeck A/S, Valby, Denmark.
Chronic stress and stress-related mental illnesses such as major depressive disorder (MDD) constitute some of the leading causes of disability worldwide with a higher prevalence in women compared to men. However, preclinical research into stress and MDD is heavily biased toward using male animals only. Aberrant activity of the hypothalamic-pituitary-adrenal (HPA) axis has been linked to the development of MDD and several animal models of MDD have been established based on HPA axis dysregulation.
View Article and Find Full Text PDFPhysiol Behav
January 2025
Military Nutrition Division, United States Army Research Institute of Environmental Medicine, Natick, MA, USA. Electronic address:
The mentally and physically challenging 19-20 day, multi-stressor US Army Special Forces Assessment and Selection (SFAS) course selects soldiers for Army Special Forces (SF) training. If selected, candidates enroll for advanced training in the 2-year Special Forces Qualification Course (SFQC) to qualify for the SF. This longitudinal study examined physiological, psychological, and nutritional status of soldiers before (pre-SFAS) and after SFAS (post-SFAS), and post-SFQC, to identify predictors of graduation from SFQC.
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