Article
Immunology
Nicole J. Yang, Dylan Neel, Liwen Deng, Michelle Heyang, Angela Kennedy-Curran, Victoria S. Tong, Jin Mo Park, Isaac M. Chiu
Summary: Bacterial products can activate nociceptive neurons during infection, causing edema and inflammation, potentially influencing bacterial pathogenesis.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Clinical Neurology
Zilong Wang, Changyu Jiang, Hongyu Yao, Ouyang Chen, Sreya Rahman, Yun Gu, Junli Zhao, Yul Huh, Ru-Rong Ji
Summary: The study demonstrates that intrathecal opioids can induce itching by acting on MOR on spinal inhibitory interneurons, resulting in disinhibition of the spinal itch circuit. In addition, spinal ablation of GRPR(+) neurons can reduce opioid-induced itch, while intrathecal NPY administration can suppress itch response.
Article
Clinical Neurology
Zilong Wang, Changyu Jiang, Hongyu Yao, Ouyang Chen, Sreya Rahman, Yun Gu, Junli Zhao, Yul Huh, Ru-Rong Ji
Summary: The study revealed that intrathecal morphine induces itch by acting on MOR on spinal inhibitory interneurons, leading to disinhibition of spinal itch circuit. The data provide mechanistic insights into the treatment of chronic itch with opioid receptor antagonists like naloxone.
Article
Pharmacology & Pharmacy
Erick J. Rodriguez-Palma, Isabel Velazquez-Lagunas, Ana Belen Salinas-Abarca, Guadalupe C. Vidal-Cantu, Maria J. Escoto-Rosales, Gabriela Castaneda-Corral, Alonso Fernandez-Guasti, Vinicio Granados-Soto
Summary: Chronic stress can trigger behavioral disorders such as nociceptive hypersensitivity and anxiety, but the mechanisms behind these disorders are not fully understood. This study investigated the role of HMGB1 and TLR4 in chronic stress-induced nociceptive hypersensitivity. The results showed that chronic stress induced tactile allodynia, anxiety-like behaviors, and activation of spinal microglia. HMGB1 and TLR4 expression was increased in the dorsal root ganglion. Blocking HMGB1 and TLR4 reduced nociceptive hypersensitivity and anxiety-like behaviors induced by chronic stress. TLR4 deletion diminished chronic stress-induced tactile allodynia in both male and female mice. The findings suggest that TLR4 could be a potential target for treating nociceptive hypersensitivity associated with chronic pain.
EUROPEAN JOURNAL OF PHARMACOLOGY
(2023)
Article
Multidisciplinary Sciences
Basak Donertas-Ayaz, Ariana C. Brice-Tutt, Wendi L. Malphurs, Darrice Montgomery, Richard H. Mills, John K. Neubert, Robert M. Caudle
Summary: This paper presents a protocol for assessing mechanical hypersensitivity following chronic constriction injury of the infraorbital nerves (CCI-ION) in rats using an orofacial operant pain system. The data showed that CCI-ION resulted in a significant decrease in the number of licks and the L/F ratio and an increase in the latency to the first lick, indicating mechanical hypersensitivity. These data support the use of operant-based pain assays to assess mechanical pain sensitivity in preclinical pain research.
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2022)
Article
Biochemistry & Molecular Biology
Nazli Turan Yucel, Ummuhan Kandemir, Umut Irfan Ucel, Umide Demir Ozkay, Ozgur Devrim Can
Summary: The therapeutic potential of vortioxetine on mechanical hyperalgesia/allodynia was investigated in rats with streptozotocin-induced diabetes, and its possible mechanism of action was elucidated in this study. The findings demonstrated that vortioxetine administration significantly improved diabetes-induced hyperalgesia and allodynia responses in the rats without affecting their motor coordination. The involvement of the catecholaminergic system, alpha(2)- and beta(2)-adrenoceptors, D-2/3 dopaminergic receptors and cholinergic muscarinic receptors in the exhibited pharmacological activity was suggested.
Article
Multidisciplinary Sciences
Daniel C. Lowes, Linda A. Chamberlin, Lisa N. Kretsge, Emma S. Holt, Atheir Abbas, Alan J. Park, Lyubov Yusufova, Zachary H. Bretton, Ayesha Firdous, Armen G. Enikolopov, Joshua A. Gordon, Alexander Z. Harris
Summary: In this study, researchers found that stress triggers GABAergic activity in the ventral tegmental area which blunts reward-seeking behavior in mice.
NATURE COMMUNICATIONS
(2021)
Article
Behavioral Sciences
Guadalupe Garcia, Vladimir A. Martinez-Rojas, Janet Murbartian
Summary: TREK-1 channels play a crucial role in acute and persistent nociceptive hypersensitivity, with selective blockade or activation affecting pain behaviors. The activity of TREK-1 at peripheral and spinal sites can reduce neuronal excitability in a formalin-induced nociception model.
BEHAVIOURAL BRAIN RESEARCH
(2021)
Article
Neurosciences
Feng Du, Guangjuan Yin, Lei Han, Xi Liu, Dong Dong, Kaifang Duan, Jiantao Huo, Yanyan Sun, Longzhen Cheng
Summary: Chronic use of opioids is associated with opioid-induced hypersensitivity (OIH) and analgesic tolerance. In this study, researchers found that the loss of peripheral mu-opioid receptors (MORs) did not affect morphine-induced mechanical allodynia and anti-allodynic tolerance, suggesting that the peripheral MOR signaling pathway may not be an optimal target for preventing mechanical OIH and analgesic tolerance. Future studies should focus more on central mechanisms.
NEUROSCIENCE BULLETIN
(2023)
Article
Anesthesiology
Tobias Schneider, Laura Zurbriggen, Markus Dieterle, Eckhard Mauermann, Priska Frei, Katja Mercer-Chalmers-Bender, Wilhelm Ruppen
Summary: This study assessed the effect of cannabidiol (CBD) on acute pain and found that oral administration of 800 mg CBD did not show a significant effect on pain intensity, hyperalgesia, and allodynia compared with placebo. The study suggests the need for further research on different dosing, routes of administration, and the use of CBD as part of multimodal treatment strategies.
Article
Gastroenterology & Hepatology
Xiaoyun Yu, Youtian Hu, Mingwei Yu, Bradley J. Undem, Shaoyong Yu
Summary: This study demonstrated that bile acid, deoxycholic acid (DCA), directly activates esophageal vagal afferent nodose and jugular nociceptive C-fibers and sensitizes their response to capsaicin, potentially contributing to bile acid-induced esophageal nociceptive symptoms refractory to proton-pump inhibitors (PPIs) therapy.
AMERICAN JOURNAL OF PHYSIOLOGY-GASTROINTESTINAL AND LIVER PHYSIOLOGY
(2021)
Article
Plant Sciences
Ananya Buapratoom, Aree Wanasuntronwong, Onrawee Khongsombat, Mayuree H. Tantisira
Summary: ECa 233 showed anti-nociceptive effects on chronic neuropathic orofacial pain in mice by modulating peripheral calcitonin gen-related peptide expression, which decreased nociceptive activity in trigeminal nucleus caudalis. This study also found a synergistic effect of ECa 233 with gabapentin, reducing mechanical hyperalgesia and allodynia in mice. Further clinical trials are needed to explore the efficacy of ECa 233 in treating neuropathic pain in humans.
JOURNAL OF ETHNOPHARMACOLOGY
(2022)
Article
Neurosciences
Yuki Niimi, Jose Gomez-Tames, Toshiaki Wasaka, Akimasa Hirata
Summary: This study investigated the optimal parameters for selective stimulation of A delta- and C-fibers using a computational model and experimental results. The results showed that different sensations could be elicited by selectively stimulating different fibers by adjusting the pulse counts and frequencies. The computational model revealed that terminal axon thickness was the most important biophysical factor affecting perception thresholds.
FRONTIERS IN NEUROSCIENCE
(2023)
Article
Anesthesiology
Markus Dieterle, Laura Zurbriggen, Eckhard Mauermann, Katja Mercer-Chalmers-Bender, Priska Frei, Wilhelm Ruppen, Tobias Schneider
Summary: This study suggests that a high single-oral dose of 1600 mg cannabidiol is not effective in reducing opioid-induced hyperalgesia (OIH).
Article
Multidisciplinary Sciences
Qin-Li Wan, Xiao Meng, Wenyu Dai, Zhenhuan Luo, Chongyang Wang, Xiaodie Fu, Jing Yang, Qunshan Ye, Qinghua Zhou
Summary: Environmental stress can lead to survival advantages in descendants through transgenerational inheritance and epigenetic modifications.
Correction
Clinical Neurology
Cedric Peirs, Radhouane Dallel, Andrew J. Todd
JOURNAL OF NEURAL TRANSMISSION
(2021)
Article
Anesthesiology
Sarah Dallel, Laurent Devoize, Igor Tauveron, Bruno Pereira, Pierre Clavelou, Salwan Maqdasy, Xavier Moisset, Radhouane Dallel
Summary: This study found that migraine headaches and neuropathic pain are more common in patients with pituitary adenoma (PA) than in the general population, and are generally poorly treated. Both types of pain are comorbid in PA patients and migraine is associated with the presence of a tumor. Further research is needed to characterize the biological mechanisms of this relationship and design optimal treatments.
EUROPEAN JOURNAL OF PAIN
(2021)
Article
Neurosciences
Cedric Peirs, Sean-Paul G. Williams, Xinyi Zhao, Cynthia M. Arokiaraj, David W. Ferreira, Myung-chul Noh, Kelly M. Smith, Priyabrata Halder, Kelly A. Corrigan, Jeremy Y. Gedeon, Suh Jin Lee, Graziana Gatto, David Chi, Sarah E. Ross, Martyn Goulding, Rebecca P. Seal
Summary: Mechanical allodynia in the spinal dorsal horn is conveyed by different neural circuits depending on the nature of the injury, such as inflammatory or neuropathic. Calretinin neurons and protein kinase C gamma neurons play distinct roles in conveying mechanical allodynia in different locations within the dorsal horn. Cholecystokinin neurons located deeper in the dorsal horn are important for both types of injuries.
Article
Environmental Sciences
Nathalie Pham Dang, Candice Delbet-Dupas, Aurelien Mulliez, Laurent Devoize, Radhouane Dallel, Isabelle Barthelemy
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2020)
Article
Neurosciences
F. Gabrielli, M. Megemont, R. Dallel, P. Luccarini, L. Monconduit
Summary: The study successfully inferred C-fiber LFP from spikes using kernel convolution theory and optimization algorithms, demonstrating the ability to reverse generate spikes distribution from LFP.
BRAIN RESEARCH BULLETIN
(2021)
Article
Oncology
Yakun Luo, Virginie Vlaeminck-Guillem, Silvere Baron, Sarah Dallel, Chang Xian Zhang, Muriel Le Romancer
Summary: The study highlights the unrecognized oncosuppressive role of menin specifically in AR-independent prostate cancer cells, through the activation of JunD and beta-catenin pathways. Silencing MEN1 in AR-independent cell lines resulted in increased anchorage independence and cell migration, accompanied by sustained MYC expression. Additionally, JunD and beta-catenin were found to be necessary for the altered tumorigenic potential triggered by MEN1 inactivation in AR-independent prostate cancer cells.
JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH
(2021)
Article
Anesthesiology
Noemie Mermet-Joret, Cristina Alba-Delgado, Amelie Descheemaeker, Francois Gabrielli, Radhouane Dallel, Myriam Antri
Summary: Pain processing is immature in young mammals. The development of neurons in the medullary dorsal horn (MDH) has been overlooked. In this study, we investigate the age-dependent development of neurons in the inner lamina II (IIi) of the MDH in rats. We found that these neurons undergo physiological and structural changes, which are associated with facial mechanical allodynia.
Review
Clinical Neurology
X. Moisset, P. Giraud, R. Dallel
Summary: Migraine is a common disease associated with several chronic inflammatory conditions, but the causal link remains unclear. Further research into systemic inflammation biomarkers and gut microbiome modifications is warranted.
REVUE NEUROLOGIQUE
(2021)
Article
Chemistry, Medicinal
Alexia Visseq, Amelie Descheemaeker, Karine Herault, Francis Giraud, Isabelle Abrunhosa-Thomas, Alain Artola, Fabrice Anizon, Radhouane Dallel, Pascale Moreau
Summary: The synthesis of new 3,5-disubstituted pyridin-2(1H)-one derivatives showed promising anti-allodynic potency in rats, with some compounds completely preventing mechanical allodynia. Some of these compounds appeared to be inhibitors of p38a MAPK, but anti-allodynic effects and p38a MAPK inhibitory potencies were not necessarily correlated, indicating the involvement of other biological targets in the analgesic activity of this series.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Article
Clinical Neurology
Amelie Descheemaeker, Herve Poras, Michel Wurm, Philippe Luccarini, Tanja Ouimet, Radhouane Dallel
Summary: The dual enkephalinase inhibitor PL37 has shown potential as an acute and prophylactic treatment for migraine, as demonstrated in animal pain models and early human clinical trials. Protecting enkephalins from degradation appears to be an innovative approach for migraine treatment.
Article
Neurosciences
Eric Ducret, Florian Jacquot, Amelie Descheemaeker, Radhouane Dallel, Alain Artola
Summary: Patients with chronic pain, especially orofacial pain, often suffer from affective disorders, including anxiety. Previous studies focused on the role of the caudal anterior cingulate cortex (cACC) in affective responses to pain, but recent evidence suggests that the rostral ACC (rACC) is also involved in processing affective pain. The neuronal and synaptic plasticity associated with this processing is not yet known.
BRAIN RESEARCH BULLETIN
(2022)
Review
Nutrition & Dietetics
Sylvain Mathieu, Martin Soubrier, Cedric Peirs, Laurent-Emmanuel Monfoulet, Yves Boirie, Anne Tournadre
Summary: Conflicting evidence exists regarding the effects of nutrient intake in osteoarthritis. A systematic literature review and meta-analysis found that curcumin and ginger supplementation have favorable impacts on knee osteoarthritis symptoms, while vitamin D supplementation significantly decreases pain and function. However, omega-3 and vitamin E have no significant effects on osteoarthritis parameters.
Article
Cell Biology
Corinne El Khoueiry, Cristina Alba-Delgado, Myriam Antri, Maria Gutierrez-Mecinas, Andrew J. Todd, Alain Artola, Radhouane Dallel
Summary: Mechanical allodynia, a symptom of inflammatory and neuropathic pain, is associated with the interaction between GABA and glycine-mediated inhibitory signals in the spinal cord. The inhibitory synapses on PKC gamma(+) interneurons show a pharmacological specialization, with predominantly GABA(A) R-only and GlyR-only currents.
Article
Clinical Neurology
Christelle Gremeau-Richard, Paul Pionchon, Aurelien Mulliez, Christian Duale, Radhouane Dallel
Summary: This study reveals that there is no impairment of endogenous pain inhibition mechanisms in patients with burning mouth syndrome (BMS), but rather an increase in pain facilitation.
JOURNAL OF HEADACHE AND PAIN
(2022)