Article
Multidisciplinary Sciences
Ekaterina Yukhnovich, Kai Alter, William Sedley
Summary: We attempted to replicate a potential tinnitus biomarker called the Intensity Mismatch Asymmetry in humans based on the Sensory Precision Integrative Model of Tinnitus. The design included improvements such as tighter matching of participants for gender and using a control stimulus frequency to investigate differences specific to tinnitus. However, no significant group differences were found, though there were differences in response amplitude and deviant direction effects between tinnitus and control groups at different frequencies.
Article
Clinical Neurology
Laura M. Anderson, Sridhar Samineni, Donna M. Wilder, Marisela Lara, Ondine Eken, Rodrigo Urioste, Joseph B. Long, Peethambaran Arun
Summary: The study found that meloxicam and buprenorphine demonstrated neuroprotective effects in a rat bTBI model, but also had negative impacts such as slowing recovery and causing short-term memory deficits. These results suggest that these pain relieving medications may not be ideal for pre-clinical studies evaluating neurobehavioral responses after TBI due to their varied effects on neurobehavioral functions.
FRONTIERS IN NEUROLOGY
(2021)
Article
Clinical Neurology
Scott T. Miller, Candice F. Cooper, Paul Elsbernd, Joseph Kerwin, Ricardo Mejia-Alvarez, Adam M. Willis
Summary: Blast traumatic brain injury is a common occurrence in modern military conflicts and may be caused by damage to intracranial mechanical interfaces. Both neuropathological and clinical findings suggest that injury occurs at material interfaces within the brain tissue, which could be key in understanding how blast overpressures lead to intracranial damage.
FRONTIERS IN NEUROLOGY
(2021)
Review
Cell Biology
Manuela Zinni, Julien Pansiot, Pierre-Louis Leger, Marina El Kamouh, Olivier Baud
Summary: Cerebral stroke, traumatic brain injury, and hypoxic ischemic encephalopathy are common brain injuries with a complex pathogenesis involving alterations of the cerebrovascular system, cell death, and inflammation. Preclinical data suggest that sildenafil may have a neuroprotective effect on both adult and neonatal brain injuries.
Article
Clinical Neurology
Cecilia Martindale, Angela P. Presson, Todd J. Schwedt, K. C. Brennan, Melissa M. Cortez
Summary: This study investigates the impact of sensory hypersensitivity on headache-related disability in patients with post-traumatic headache. The findings suggest that increased sensitivity to light, sound, and touch is associated with increased disability in post-traumatic headache patients.
Article
Behavioral Sciences
Nicholas S. Race, Katharine D. Andrews, Elizabeth A. Lungwitz, Sasha M. Vega Alvarez, Timothy R. Warner, Glen Acosta, Jiayue Cao, Kun-han Lu, Zhongming Liu, Amy D. Dietrich, Sreeparna Majumdar, Anantha Shekhar, William A. Truitt, Riyi Shi
Summary: TBI is associated with increased risk for mental health disorders, and deficits in psychosocial processing may contribute to post-TBI mental health issues. A pre-clinical investigation using rats found that a single mild blast TBI induced impairment of psychosocial processing in the absence of other confounding factors, and this impairment may be related to acute upregulations of an oxidative stress metabolite.
BEHAVIOURAL BRAIN RESEARCH
(2021)
Article
Medicine, General & Internal
Danuta Raj-Koziak, Elzbieta Gos, Justyna Jolanta Kutyba, Piotr H. Skarzynski, Henryk Skarzynski
Summary: This study aimed to create a questionnaire to assess the severity of hyperacusis in terms of loudness, fear, and pain, and evaluate its psychometric properties. The questionnaire showed appropriate three-factor structure and good internal consistency and reproducibility. It can be used in clinical practice and research for patients with hyperacusis and tinnitus.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Psychology, Multidisciplinary
Ashley N. Clausen, Heather C. Bouchard, Kathleen A. Welsh-Bohmer, Rajendra A. Morey
Summary: This study compared the chronic effects of combat-related blast mTBI and subconcussive blast exposure on neuropsychological performance in Veterans. Results showed that Veterans with combat-related blast mTBI exhibited significantly slower processing speed compared to controls, even after controlling for PTSD and depressive symptoms. However, there were no significant differences in cognition between subconcussive and control groups, or between subconcussive and combat-related blast mTBI groups, suggesting that neurocognitive assessment may not be sensitive enough to detect the long-term effects of subconcussive blast exposure.
FRONTIERS IN PSYCHOLOGY
(2021)
Article
Biology
Danuta Raj-Koziak, Elzbieta Gos, Justyna Kutyba, Henryk Skarzynski, Piotr H. Skarzynski
Summary: The study found that the more significant problem for tinnitus patients is hyperacusis rather than misophonia. The diagnosis and treatment of decreased sound tolerance should take into account both audiological and psychological problems of the patients.
Article
Cell Biology
Ruslan Prus, Olena Appelhans, Maksim Logash, Petro Pokotylo, Grzegorz Jozef Nowicki, Barbara Slusarska
Summary: Traumatic brain injury is a serious issue in modern medicine, with our study showing that mild TBI causes different histological changes in the livers of adult and juvenile rats. The most significant changes were observed on days 5-7, with compensatory phenomena prevailing on days 14-21 in both groups.
Article
Neurosciences
Caroline A. Browne, Hildegard A. Wulf, Moriah L. Jacobson, Mario G. Oyola, T. John Wu, Irwin Lucki
Summary: Neurobehavioral deficits can emerge in patients after a mild traumatic brain injury (TBI) and nearly half of them may experience these deficits for months. Ketamine, commonly used as an anesthetic/analgesic, may have beneficial effects on patients with a history of TBI, but caution should be exercised due to potential impairing effects. Studies on mice showed that sensitivity to ketamine increased in mice after TBI, suggesting caution should be taken when using ketamine in TBI patients.
EXPERIMENTAL NEUROLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Iain A. Rankin, Thuy-Tien Nguyen, Louise McMenemy, Jonathan C. Clasper, Spyros D. Masouros
Summary: This study explored the mechanisms leading to traumatic amputation caused by explosive devices, highlighting the impact of shock waves, energised projectiles, and blast wind. These findings are crucial for informing strategies aimed at mitigating such injuries.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Joel A. Berliner, Magdalena A. Lam, Elmira Najafi, Sarah J. Hemley, Lynne E. Bilston, Marcus A. Stoodley
Summary: This study investigated the expression of Aquaporin-4 (AQP4) in post-traumatic syringomyelia (PTS) and its effect on syrinx size. The results showed that increased AQP4 expression was associated with larger cysts, but there were no localized changes in specific regions. Modulation of AQP4 did not alter syrinx volume and length. Further research should focus on earlier time-points after PTS induction to investigate the potential effects of AQP4 modulation.
SCIENTIFIC REPORTS
(2023)
Article
Neurosciences
Nevin Varghese, Nicolas E. Amelinez-Robles, Barclay Morrison III
Summary: In this study, the effects of blast-induced traumatic brain injury (bTBI) on the hippocampal network of rat organotypic hippocampal slice cultures (OHSCs) were investigated. The results showed reduced connectivity and clustering coefficients in the hippocampal network following bTBI, along with decreased expression of alpha 1 and alpha 5 GABAA receptor subunits. Treatment with the histone deacetylase inhibitor suberanilohydroxamic acid (SAHA) restored the alpha 1 subunit and attenuated deficits in network measures. These findings suggest that GABAA receptors may play a role in neuronal network changes and could be targeted for therapeutic intervention in bTBI-induced neurological symptoms.
EXPERIMENTAL NEUROLOGY
(2023)
Article
Biochemistry & Molecular Biology
Diana I. I. Salikhova, Victoria V. V. Golovicheva, Timur Kh. Fatkhudinov, Yulia A. A. Shevtsova, Anna G. G. Soboleva, Kirill V. V. Goryunov, Alexander S. S. Dyakonov, Victoria O. O. Mokroysova, Natalia S. S. Mingaleva, Margarita O. O. Shedenkova, Oleg V. V. Makhnach, Sergey I. I. Kutsev, Vladimir P. P. Chekhonin, Denis N. N. Silachev, Dmitry V. V. Goldshtein
Summary: Traumatic brain injury(TBI) is a common pathological disease of the brain, accounting for 30-50% of all physical traumas. It causes damage to brain tissue, leading to disruptions in the blood-brain barrier and the death of cells. This study focused on the therapeutic potential of proteins secreted by glial progenitor cells in a rat model of TBI. The findings suggest that intranasal infusions of these proteins can promote functional recovery and reduce inflammation and apoptotic processes, supporting the further consideration of glial secretomes for clinical use in TBI.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Neurosciences
Yang He, Jun Tang, Meng Zhang, Junjie Ying, Dezhi Mu
Summary: This study investigated the protective effects and mechanisms of human placenta derived mesenchymal stem cells (hPMSCs) transplantation in a rat model of hypoxic-ischemic encephalopathy (HIE). The results showed that hPMSCs transplantation reduced apoptosis and improved long-term neurological prognosis. Furthermore, the downregulation of Sema 3A/NRP-1 expression and activation of the PI3K/Akt/mTOR signaling pathway played a key role in the protective effects of hPMSCs.
Article
Neurosciences
Emily L. Isenstein, Edward G. Freedman, Jiayi Xu, Ian A. DeAndrea-Lazarus, John J. Foxe
Summary: This study evaluated electrophysiological discrimination of parametric somatosensory stimuli in healthy young adults to understand how the brain processes the duration of tactile information. The results showed that participants did not electrophysiologically discriminate between 100 and 115 ms, but they exhibited distinct electrophysiological responses when the deviant stimuli were 130, 145, and 160 ms. These findings contribute to a better understanding of tactile sensitivity in different clinical conditions.
Article
Neurosciences
Juliana R. Souza, Ludmila Lima-Silveira, Daniela Accorsi-Mendonca, Benedito H. Machado
Summary: This study demonstrates that A2A receptors play a crucial role in modulating synaptic transmission in the NTS neurons and are required for the enhancement of glutamatergic transmission observed under short-term sustained hypoxia conditions.
Article
Neurosciences
Miki Hashizume, Rina Ito, Rie Suge, Yasushi Hojo, Gen Murakami, Takayuki Murakoshi
Summary: The basolateral amygdaloid complex (BLA) is closely involved in the formation of emotional memories, including both aversive memory and contextual fear memory. Acute sleep deprivation (SD) disrupts the acquisition of tone-associated fear memory in juvenile rats, but has no significant effect on contextual fear memory. Slow network oscillation in the amygdala contributes to the formation of amygdala-dependent fear memory in relation to sleep.
Article
Neurosciences
Qunxian Wang, Shipeng Guo, Dongjie Hu, Xiangjun Dong, Zijun Meng, Yanshuang Jiang, Zijuan Feng, Weihui Zhou, Weihong Song
Summary: GSDME plays a crucial role in the pathogenesis of Alzheimer's disease by regulating the switch from apoptosis to pyroptosis and participating in neuroinflammatory response. Knockdown of GSDME has been shown to improve cognitive impairments, indicating that GSDME could be a therapeutic target for Alzheimer's disease.