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Widespread pain phenotypes impact treatment efficacy results in randomized clinical trials for interstitial cystitis/bladder pain syndrome: a Multidisciplinary Approach to the Study of Chronic Pelvic Pain network study. Pain (IF 5.9) Pub Date : 2024-11-05 John T Farrar,Kenneth T Locke,J Quentin Clemens,James W Griffith,Steven E Harte,Ziya Kirkali,Karl J Kreder,John N Krieger,H Henry Lai,Robert M Moldwin,Chris Mullins,Bruce D Naliboff,Michel A Pontari,Larissa V Rodríguez,Anthony J Schaeffer,Andrew Schrepf,Alisa Stephens-Shields,Siobhan Sutcliffe,Bayley J Taple,David A Williams,J Richard Landis
Pain clinical trials are notoriously complex and often inefficient in demonstrating efficacy, even for known efficacious treatments. A major issue is the difficulty in the a priori identification of specific phenotypes to include in the study population. Recent work has identified the extent of widespread pain as an important determinant of the likelihood of response to therapy, but it has not been
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Childhood maltreatment and chronic "all over" body pain in adulthood: a counterfactual analysis using UK Biobank. Pain (IF 5.9) Pub Date : 2024-11-05 Kate A Timmins,Tim G Hales,Gary J Macfarlane,
Evidence linking adverse childhood experiences and chronic pain in adulthood is largely cross-sectional, potentially subject to recall bias and does not allow exploration of mediating pathways. We analysed a large population-based cohort (UK Biobank) using a causal framework, to determine if childhood maltreatment is related to chronic "all over" body pain in adulthood. We used doubly robust estimation
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Trajectories of cold but not mechanical sensitivity correspond with disability trajectories after whiplash injury. Pain (IF 5.9) Pub Date : 2024-10-30 Scott F Farrell,Nigel R Armfield,Eythor Kristjansson,Ken Niere,Steffan Wittrup McPhee Christensen,Michele Sterling
Developmental trajectories for neck disability after whiplash injury have been identified. Their relationship to cold and mechanical sensitivity trajectories is not known. We aimed to (1) identify recovery trajectories of cold and mechanical sensitivity, (2) explore their codevelopment with disability trajectories, (3) identify predictors of sensitivity trajectories, and (4) explore codevelopment of
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Estrous cycle regulates cephalic mechanical sensitivity and sensitization of the trigemino-cervical complex in a female rat model of chronic migraine. Pain (IF 5.9) Pub Date : 2024-10-30 Maxime Barnet,Amelie Descheemaeker,Lea Favier,Xavier Moisset,Julien Schopp,Radhouane Dallel,Alain Artola,Lenaic Monconduit,Myriam Antri
The higher incidence of migraines in women compared with men has led to the inclusion of female animals in pain research models. However, the critical role of the hormonal cycle is frequently overlooked, despite its clear correlation with migraine occurrences. In this study, we show in a rat model of migraine induced by repeated dural infusions of an inflammatory soup (IS) that a second IS (IS2) injection
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Fatigue, sleep disturbance, and pain interference in children and adolescents with chronic pain: a longitudinal study. Pain (IF 5.9) Pub Date : 2024-10-30 Josep Roman-Juan,Guillermo Ceniza-Bordallo,Elisabet Sánchez-Rodríguez,Mark P Jensen,Jordi Miró
Research has shown that pain and sleep disturbance often co-occur and influence each other over time in children and adolescents with chronic pain. Longitudinal studies examining the underlying mechanisms of this association are scarce and have focused primarily on the role of internalizing mental health symptoms and mood. This longitudinal study aimed to determine whether fatigue underlies the co-occurrence
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Comparative risk of mortality in new users of prescription opioids for noncancer pain: results from the International Pharmacosurveillance Study. Pain (IF 5.9) Pub Date : 2024-10-29 Meghna Jani,Nadyne Girard,David W Bates,David L Buckeridge,William G Dixon,Robyn Tamblyn
Although opioids continue to be used internationally for noncancer pain, evidence to date on the comparative safety of different opioids is sparse and conflicting. The aim of this study was to examine the comparative risk of all-cause mortality in patients newly initiated on opioids for noncancer pain, across 3 jurisdictions in the United Kingdom (UK), United States, and Canada. A multicentre retrospective
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Genetic associations of neuropathic pain and sensory profile in a deeply phenotyped neuropathy cohort. Pain (IF 5.9) Pub Date : 2024-10-29 Mikael Åkerlund,Georgios Baskozos,Wenqianglong Li,Andreas C Themistocleous,Mathilde M V Pascal,N William Rayner,Nadine Attal,Ralf Baron,Sophie Baudic,Kristine Bennedsgaard,Didier Bouhassira,Maddalena Comini,Geert Crombez,Catharina G Faber,Nanna B Finnerup,Janne Gierthmühlen,Yelena Granovsky,Sandra Sif Gylfadottir,Harry L Hébert,Troels S Jensen,Jishi John,Harriet I Kemp,Giuseppe Lauria,Helen Laycock
We aimed to investigate the genetic associations of neuropathic pain in a deeply phenotyped cohort. Participants with neuropathic pain were cases and compared with those exposed to injury or disease but without neuropathic pain as control subjects. Diabetic polyneuropathy was the most common aetiology of neuropathic pain. A standardised quantitative sensory testing protocol was used to categorize participants
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Spinal hyperexcitability in patients with chronic musculoskeletal pain or headache as evidenced by alterations in the nociceptive withdrawal reflex: a systematic review and meta-analysis. Pain (IF 5.9) Pub Date : 2024-10-29 Sophie Van Oosterwijck,Amber Billens,Elise Cnockaert,Lieven Danneels,Timoti Mertens,Evy Dhondt,Jessica Van Oosterwijck
The nociceptive withdrawal reflex (NWR) is a spinal withdrawal reflex induced by painful stimulation. It is a measure of spinal hyperexcitability, which is believed to contribute to chronic musculoskeletal pain (MSKP) and headache. Previous syntheses of the evidence for alterations in the NWR in patients with chronic MSKP and headache needed a comprehensive update. This systematic review and meta-analysis
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The role of neutrophils in pain: systematic review and meta-analysis of animal studies. Pain (IF 5.9) Pub Date : 2024-10-25 Miguel Á Huerta,Miguel Molina-Álvarez,Miguel M García,Miguel A Tejada,Carlos Goicoechea,Nader Ghasemlou,M Carmen Ruiz-Cantero,Enrique J Cobos
The peripheral inflammatory response is an attractive therapeutic target for pain treatment. Neutrophils are the first circulating inflammatory cells recruited to sites of injury, but their contribution to pain outcomes is unclear. We performed a systematic review and meta-analysis of original preclinical studies, which evaluated the effect of preemptive neutrophil depletion on pain outcomes (PROSPERO
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Activation of TGR5 in the injured nerve site according to a prevention protocol mitigates partial sciatic nerve ligation-induced neuropathic pain by alleviating neuroinflammation. Pain (IF 5.9) Pub Date : 2024-10-25 Wen-Ge Shi,Yao Yao,Ya-Jing Liang,Jie Lei,Shi-Yang Feng,Zi-Xian Zhang,Yue Tian,Jie Cai,Guo-Gang Xing,Kai-Yuan Fu
Neuropathic pain is a pervasive medical challenge currently lacking effective treatment options. Molecular changes at the site of peripheral nerve injury contribute to both peripheral and central sensitization, critical components of neuropathic pain. This study explores the role of the G-protein-coupled bile acid receptor (GPBAR1 or TGR5) in the peripheral mechanisms underlying neuropathic pain induced
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Discordance between preclinical and clinical testing of NaV1.7-selective inhibitors for pain. Pain (IF 5.9) Pub Date : 2024-10-23 Jane Yang,Yu-Feng Xie,Russell Smith,Stéphanie Ratté,Steven A Prescott
The voltage-gated sodium channel NaV1.7 plays an important role in pain processing according to genetic data. Those data made NaV1.7 a popular drug target, especially since its relatively selective expression in nociceptors promised pain relief without the adverse effects associated with broader sodium channel blockade. Despite encouraging preclinical data in rodents, NaV1.7-selective inhibitors have
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Lived and care experiences of young people with chronic musculoskeletal pain and mental health conditions. A systematic review with qualitative evidence synthesis. Pain (IF 5.9) Pub Date : 2024-10-22 Nardia-Rose Klem,Helen Slater,Samantha Rowbotham,Jason Chua,Robert Waller,Jennifer N Stinson,Lorena Romero,Susan M Lord,Breanna Tory,Robert Schütze,Andrew M Briggs
Chronic musculoskeletal pain (CMP) and coexisting mental health conditions impact young people; however, little is known about their lived and care experiences. In a prospectively registered systematic review with qualitative evidence synthesis (PROSPERO: CRD42022369914), we explored the following: (1) lived physical, psychological, and social experiences; and (2) care experiences/preferences of young
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Widespread hyperexcitability of nociceptor somata outlasts enhanced avoidance behavior after incision injury. Pain (IF 5.9) Pub Date : 2024-10-22 Alexis Bavencoffe,Elia R Lopez,Kayla N Johnson,Jinbin Tian,Falih M Gorgun,Breanna Q Shen,Drue M Domagala,Michael X Zhu,Carmen W Dessauer,Edgar T Walters
Nociceptors with somata in dorsal root ganglia (DRGs) readily switch from an electrically silent state to a hyperactive state of tonic, nonaccommodating, low-frequency, irregular discharge of action potentials (APs). Spontaneous activity (SA) during this state is present in vivo in rats months after spinal cord injury (SCI) and has been causally linked to SCI pain. Intrinsically generated SA and, more
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METHA-NeP: effectiveness and safety of methadone for neuropathic pain: a controlled randomized trial. Pain (IF 5.9) Pub Date : 2024-10-22 Jorge Alberto Martins Pentiado Júnior,Marcell Maduro Barbosa,Gabriel Taricani Kubota,Pedro Nascimento Martins,Larissa Iulle Moreira,Ana Mércia Fernandes,Valquíria Aparecida da Silva,Jefferson Rosi Júnior,Lin Tchia Yeng,Manoel Jacobsen Teixeira,Daniel Ciampi de Andrade
In this randomized, double-blind, parallel placebo-controlled clinical trial, we evaluated the efficacy of methadone as an add-on therapy for people with chronic neuropathic pain (NP). Eighty-six patients were randomly assigned to receive methadone or placebo for 8 weeks. The primary outcome was the proportion of participants achieving at least 30% pain relief from baseline using a 100-mm pain Visual
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Visual exposure to green light therapy reduces knee joint pain and alters the lipidome in osteoarthritic rats. Pain (IF 5.9) Pub Date : 2024-10-18 Melissa S O'Brien,Emily Richter,Taylor Woodward,Heather B Bradshaw,Jason J McDougall
Visual exposure to dim, green, light has been found to reduce pain levels in patients living with migraine, low back pain, and fibromyalgia. Preclinical studies discovered that the analgesic effect of green light was due to the central release of endogenous opioids and a reduction in inflammatory cytokines in the cerebrospinal fluid. The present study assessed the effect of green light therapy (GLT)
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Understanding what it is like to experience pain as you grow up: a poetic meta-ethnography. Pain (IF 5.9) Pub Date : 2024-10-18 Francine Toye,Erin Hannink,Amy Woolverton,Karen L Barker
A recent Lancet Commission raised concerns about the management of child and adolescent pain. We aimed to undertake a comprehensive review of qualitative research to understand children and adolescent pain experiences across contexts. We used the 7 stages of meta-ethnography to synthesise findings. We combined the strengths of arts-based methods, translating themes into poems in a range of languages
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Peripheral or central origin of chronic pain? Mu! Pain (IF 5.9) Pub Date : 2024-10-17 Martin Schmelz
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Alpha transcranial alternating current stimulation modulates pain anticipation and perception in a context-dependent manner. Pain (IF 5.9) Pub Date : 2024-10-16 Xiaoyun Li,Richu Jin,Xuejing Lu,Yilin Zhan,Naifu Jiang,Weiwei Peng
Pain perception is closely tied to the brain's anticipatory processes, particularly involving the suppression of sensorimotor α-oscillations, which reflect the system's readiness for incoming pain. Higher sensorimotor α-oscillation levels are correlated with lower pain sensitivity. Alpha transcranial alternating current stimulation (α-tACS) can enhance these oscillations, potentially reducing pain
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Brain predicted age in chronic pelvic pain: a study by the Multidisciplinary Approach to the Study of Chronic Pelvic Pain Research Network. Pain (IF 5.9) Pub Date : 2024-10-16 Kristan A Leech,Sarah A Kettlety,Wendy J Mack,Karl J Kreder,Andrew Schrepf,Jason J Kutch
The effect of chronic pain on brain-predicted age is unclear. We performed secondary analyses of a large cross-sectional and 3-year longitudinal data set from the Multidisciplinary Approach to the Study of Chronic Pelvic Pain Research Network to test the hypothesis that chronic pelvic pain accelerates brain aging and brain aging rate. Brain-predicted ages of 492 chronic pelvic pain patients and 72
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Harmonizing neuropathic pain research: outcomes of the London consensus meeting on peripheral tissue studies. Pain (IF 5.9) Pub Date : 2024-10-16 Sara Villa,Eske K Aasvang,Nadine Attal,Ralf Baron,Emmanuel Bourinet,Margarita Calvo,Nanna B Finnerup,Eleonora Galosi,James R F Hockley,Pall Karlsson,Harriet Kemp,Jannis Körner,Ekaterina Kutafina,Angelika Lampert,Margarita Mürk,Zahra Nochi,Theodore J Price,Andrew S C Rice,Claudia Sommer,Pille Taba,Andreas C Themistocleous,Rolf-Detlef Treede,Andrea Truini,Nurcan Üçeyler,David L Bennett,Annina B Schmid
Neuropathic pain remains difficult to treat, with drug development hampered by an incomplete understanding of the pathogenesis of the condition, as well as a lack of biomarkers. The problem is compounded by the scarcity of relevant human peripheral tissues, including skin, nerves, and dorsal root ganglia. Efforts to obtain such samples are accelerating, increasing the need for standardisation across
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Leveraging value-based health principles to improve translation and impact of digital psychological interventions for people with chronic pain. Pain (IF 5.9) Pub Date : 2024-10-15 Chloe-Emily Eather,Michele Sterling,Clair Sullivan,Rachel A Elphinston
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Personalised decision support in the management of patients with musculoskeletal pain in primary physiotherapy care: a cluster randomised controlled trial (the SupportPrim project). Pain (IF 5.9) Pub Date : 2024-10-15 Fredrik Granviken,Ingebrigt Meisingset,Kerstin Bach,Anita Formo Bones,Melanie Rae Simpson,Jonathan C Hill,Danielle A van der Windt,Ottar Vasseljen
We developed the SupportPrim PT clinical decision support system (CDSS) using the artificial intelligence method case-based reasoning to support personalised musculoskeletal pain management. The aim of this study was to evaluate the effectiveness of the CDSS for patients in physiotherapy practice. A cluster randomised controlled trial was conducted in primary care in Norway. We randomised 44 physiotherapists
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Spinal lumbar Urocortin 3-expressing neurons are associated with both scratching and Compound 48/80-induced sensations. Pain (IF 5.9) Pub Date : 2024-10-15 Marina C M Franck,Hannah M Weman,Mikaela M Ceder,Aikeremu Ahemaiti,Katharina Henriksson,Erica Bengtsson,Kajsa A Magnusson,Harmen K Koning,Caroline Öhman-Mägi,Malin C Lagerström
Urocortin 3 is a neuropeptide that belongs to the corticotropin-releasing hormone family and is involved in mechanosensation and stress regulation. In this study, we show that Urocortin 3 marks a population of excitatory neurons in the mouse spinal cord, divided into 2 nonoverlapping subpopulations expressing protein kinase C gamma or calretinin/calbindin 2, populations previously associated with mechanosensation
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Astrocytes in the rostral ventromedial medulla mediate the analgesic effect of electroacupuncture in a rodent model of chemotherapy-induced peripheral neuropathic pain. Pain (IF 5.9) Pub Date : 2024-10-15 Xuejiao Chen,Wenli Mi,Tianchi Gao,Fengfei Ding,Wei Wang
Chemotherapy-induced peripheral neuropathic pain aggravates cancer survivors' life burden. Electroacupuncture (EA) has exhibited promising analgesic effects on neuropathic pain in previous studies. We investigated whether EA was effective in a paclitaxel-induced neuropathic pain mouse model. We further explored the functional role of astrocytes in the rostral ventromedial medulla (RVM), a well-established
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Glial-modulating agents for the treatment of pain: a systematic review. Pain (IF 5.9) Pub Date : 2024-10-15 Ian Gilron,Maggie Z X Xiao,Meg Carley,Michael W Salter,Mark R Hutchinson,Dwight E Moulin,R Andrew Moore,Amanda Ross-White
Preclinical research supports a critical role for nervous system glia in pain pathophysiology. This systematic review of human trials of potential glia-modulating drugs for the prevention or treatment of pain followed a predefined search strategy and protocol registration. We searched for English language, randomized, double-blind trials comparing putative glia-modulating drugs to placebo or other
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Haves and have-nots: socioeconomic position improves accuracy of machine learning algorithms for predicting high-impact chronic pain. Pain (IF 5.9) Pub Date : 2024-10-11 Matthew C Morris,Hamidreza Moradi,Maryam Aslani,Sicong Sun,Cynthia Karlson,Emily J Bartley,Stephen Bruehl,Kristin R Archer,Patrick F Bergin,Kerry Kinney,Ashley L Watts,Felicitas A Huber,Gaarmel Funches,Subodh Nag,Burel R Goodin
Lower socioeconomic position (SEP) is associated with increased risk of developing chronic pain, experiencing more severe pain, and suffering greater pain-related disability. However, SEP is a multidimensional construct; there is a dearth of research on which SEP features are most strongly associated with high-impact chronic pain, the relative importance of SEP predictive features compared to established
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Analgesia and peripheral c-fiber modulation by selective Nav1.8 inhibition in rhesus. Pain (IF 5.9) Pub Date : 2024-10-08 Joshua D Vardigan,Parul S Pall,Dillon S McDevitt,ChienJung Huang,Michelle K Clements,Yuxing Li,Richard L Kraus,Michael J Breslin,Christopher J Bungard,Mikhail I Nemenov,Mikhail Klukinov,Chritopher S Burgey,Mark E Layton,Shawn J Stachel,Henry S Lange,Alan T Savitz,Vincent P Santarelli,Darrell A Henze,Jason M Uslaner
Voltage-gated sodium (Nav) channels present untapped therapeutic value for better and safer pain medications. The Nav1.8 channel isoform is of particular interest because of its location on peripheral pain fibers and demonstrated role in rodent preclinical pain and neurophysiological assays. To-date, no inhibitors of this channel have been approved as drugs for treating painful conditions in human
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Wnt5a/Ryk signaling contributes to bone cancer pain by sensitizing the peripheral nociceptors through JNK-mediated TRPV1 pathway in rats. Pain (IF 5.9) Pub Date : 2024-10-08 Mingzhu Zhai,Bo Peng,Hanxu Zhu,Jie Xiao,Lihong Xu,Xue-Jun Song
Treating bone cancer pain (BCP) continues to be a clinical challenge, and the underlying mechanisms of BCP remain elusive. This study reports that Wnt5a/Ryk signaling in the dorsal root ganglion neurons is critical to the development of BCP. Tibia bone cavity tumor cell implantation produces spontaneous and evoked behaviorally expressed pain as well as ectopic sprouting and activity of Wnt5a/Ryk signaling
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Slack potassium channels in spinal dorsal horn neurons control neuropathic pain and acute itch. Pain (IF 5.9) Pub Date : 2024-10-08 Fangyuan Zhou,Patrick Engel,Peter Ruth,Robert Lukowski,Achim Schmidtko,Ruirui Lu
The sodium-activated potassium channel Slack (KNa1.1, Kcnt1) plays a critical role in tuning neuronal excitability. Previous studies have revealed that Slack is expressed in neurons of the superficial dorsal horn of the spinal cord. However, the precise role of Slack in spinal dorsal horn neurons is unclear. In this study, we used mice in which Slack is conditionally ablated in spinal dorsal horn neurons
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NaV1.8/NaV1.9 double deletion mildly affects acute pain responses in mice. Pain (IF 5.9) Pub Date : 2024-10-04 Marta Alves-Simões,Laura Teege,Cecilia Tomni,Martha Lürkens,Annika Schmidt,Federico Iseppon,Queensta Millet,Samuel Kühs,Istvan Katona,Joachim Weis,Stefan H Heinemann,Christian A Hübner,John Wood,Enrico Leipold,Ingo Kurth,Natja Haag
The 2 tetrodotoxin-resistant (TTXr) voltage-gated sodium channel subtypes NaV1.8 and NaV1.9 are important for peripheral pain signaling. As determinants of sensory neuron excitability, they are essential for the initial transduction of sensory stimuli, the electrogenesis of the action potential, and the release of neurotransmitters from sensory neuron terminals. NaV1.8 and NaV1.9, which are encoded
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GPR35 agonists inhibit TRPA1-mediated colonic nociception through suppression of substance P release. Pain (IF 5.9) Pub Date : 2024-10-03 Rohit A Gupta,James P Higham,Abigail Pearce,Paulina Urriola-Muñoz,Katie H Barker,Luke Paine,Joshua Ghooraroo,Tim Raine,James R F Hockley,Taufiq Rahman,Ewan St John Smith,Alastair J H Brown,Graham Ladds,Rie Suzuki,David C Bulmer
The development of nonopioid analgesics for the treatment of abdominal pain is a pressing clinical problem. To address this, we examined the expression of Gi/o-coupled receptors, which typically inhibit nociceptor activation, in colonic sensory neurons. This led to the identification of the orphan receptor GPR35 as a visceral analgesic drug target because of its marked coexpression with transient receptor
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Child maltreatment elevated the risk of late-life chronic pain: a biopsychosocial framework from the UK Biobank cohort. Pain (IF 5.9) Pub Date : 2024-10-03 Wenhui Zhao,Xuejing Lu,Yiheng Tu
Understanding the development of chronic pain (CP) is challenging due to its multifactorial etiology. Child maltreatment (CM), encompassing various types of neglect and abuse affecting more than one-third of the population, is a critical aspect of early-life adversity with long-lasting impacts. It is increasingly recognized for its role in altering biopsychosocial processes, potentially increasing
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Trigeminal neuralgia and its comorbidities: a nationwide disease trajectory study. Pain (IF 5.9) Pub Date : 2024-10-01 Jacob Worm,Isabella Friis Jørgensen,Ólafur Birgir Davídsson,Henrik Hjalgrim,Timo Röder,Sisse Rye Ostrowski,Ole Birger Pedersen,Christian Erikstrup,Mie Topholm Bruun,Bitten Aagaard Jensen,Erik Sørensen,Henrik Ullum,Gyða Björnsdóttir,Thorgeir Thorgeirsson,Hreinn Stefánsson,Ólafur Árni Sveinsson,Kári Stefánsson,Henrik Winther Schytz,Lars Bendtsen,Søren Brunak,Thomas Folkmann Hansen,Stine Maarbjerg,
There is a limited understanding of risk factors and comorbidities in trigeminal neuralgia, a disease characterized by paroxysms of severe unilateral facial pain and a higher incidence in women. We aim to identify temporally associated comorbidities involving trigeminal neuralgia by analyzing nationwide disease trajectories. Using data from 7.2 million unique individuals in the Danish National Patient
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Elucidation of neuronal activity in mouse models of temporomandibular joint injury and inflammation by in vivo GCaMP Ca2+ imaging of intact trigeminal ganglion neurons. Pain (IF 5.9) Pub Date : 2024-10-01 Hyeonwi Son,John Shannonhouse,Yan Zhang,Ruben Gomez,Felix Amarista,Daniel Perez,Edward Ellis,Man-Kyo Chung,Yu Shin Kim
Patients with temporomandibular disorders (TMDs) typically experience facial pain and discomfort or tenderness in the temporomandibular joint (TMJ), causing disability in daily life. Unfortunately, existing treatments for TMD are not always effective, creating a need for more advanced, mechanism-based therapies. In this study, we used in vivo GCaMP3 Ca2+ imaging of intact trigeminal ganglia (TG) to
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CARTp/GPR160 mediates behavioral hypersensitivities in mice through NOD2. Pain (IF 5.9) Pub Date : 2024-10-01 Rachel M Schafer,Luigino A Giancotti,John C Chrivia,Ying Li,Fatma Mufti,Thomas A Kufer,Jinsong Zhang,Timothy M Doyle,Daniela Salvemini
Neuropathic pain is a debilitating chronic condition that remains difficult to treat. More efficacious and safer therapeutics are needed. A potential target for therapeutic intervention recently identified by our group is the G-protein coupled receptor 160 (GPR160) and the cocaine- and amphetamine-regulated transcript peptide (CARTp) as a ligand for GPR160. Intrathecal administration of CARTp in rodents
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Sex-dependent effects of the targeted NGF mutation (R100E) on pain behavior, joint inflammation, and bone erosion in mice. Pain (IF 5.9) Pub Date : 2024-09-25 Carlos E Morado-Urbina,Jungo Kato,Katalin Sandor,Juan Antonio Vazquez-Mora,Kristina Ängeby Möller,Nils Simon,Jaira Salcido,Arisai Martinez-Martinez,Enriqueta Munoz-Islas,Juan Miguel Jimenez-Andrade,Camilla I Svensson
Nerve growth factor (NGF)-R100E is a mutated form of human recombinant NGF that reduces the binding of NGF to its p75NTR receptor while retaining its affinity toward the TrkA receptor. Here, we used human wild type NGF and NGF-R100E knock-in mice to investigate the effects of this NGF mutation on inflammation-induced pain-related behaviors and bone loss. The hNGF-R100E mutation did not alter the nerve
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Decoding pain: uncovering the factors that affect the performance of neuroimaging-based pain models. Pain (IF 5.9) Pub Date : 2024-09-25 Dong Hee Lee,Sungwoo Lee,Choong-Wan Woo
Neuroimaging-based pain biomarkers, when combined with machine learning techniques, have demonstrated potential in decoding pain intensity and diagnosing clinical pain conditions. However, a systematic evaluation of how different modeling options affect model performance remains unexplored. This study presents the results from a comprehensive literature survey and benchmark analysis. We conducted a
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Dual Kv7.2/3-TRPV1 modulators inhibit nociceptor hyperexcitability and alleviate pain without target-related side effects. Pain (IF 5.9) Pub Date : 2024-09-24 Adi Raveh,Yefim Pen,Alon Silberman,Asher Peretz,Bernard Attali,Laura Maile,Steve Davidson,Alan D Brown,Jeffrey D Kennedy,Haim Belinson
Persistent or chronic pain is the primary reason people seek medical care, yet current therapies are either limited in efficacy or cause intolerable side effects. Diverse mechanisms contribute to the basic phenomena of nociceptor hyperexcitability that initiates and maintains pain. Two prominent players in the modulation of nociceptor hyperexcitability are the transient receptor potential vanilloid
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The conotoxin Contulakin-G reverses hypersensitivity observed in rodent models of cancer-induced bone pain without inducing tolerance or motor disturbance. Pain (IF 5.9) Pub Date : 2024-09-19 Laurent F Martin,Moyad Almuslim,Khaled A Ismail,Mohab M Ibrahim,Aubin Moutal,Kevin Cheng,Harrison J Stratton,Theodore J Price,Todd W Vanderah,Baldomero M Olivera,Rajesh Khanna,Amol Patwardhan
As the incidence and survival rates of patients with cancer continues to grow, an increasing number of people are living with comorbidities, which often manifests as cancer-induced bone pain (CIBP). The majority of patients with CIBP report poor pain control from currently available analgesics. A conotoxin, Contulakin-G (CGX), has been demonstrated to be an antinociceptive agent in postsurgical and
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Species-specific differences and the role of Nav1.9 in pain pathophysiology. Pain (IF 5.9) Pub Date : 2024-09-19 Sulayman D Dib-Hajj,Stephen G Waxman
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Persistent (Nav1.9) sodium currents in human dorsal root ganglion neurons. Pain (IF 5.9) Pub Date : 2024-09-19 Xiulin Zhang,Jane E Hartung,Michael S Gold
Nav1.9 is of interest to the pain community for a number of reasons, including the human mutations in the gene encoding Nav1.9, SCN11a, that are associated with both pain and loss of pain phenotypes. However, because much of what we know about the biophysical properties of Nav1.9 has been learned through the study of rodent sensory neurons, and there is only 76% identity between human and rodent homologs
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Randomized controlled trials of pain treatment: essential research tools, a framework for clinical care. Pain (IF 5.9) Pub Date : 2024-09-18 Ian Gilron
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Rostral ventral medulla circuits regulate both the sensory and affective dimensions of neuropathic pain: a commentary on Dogrul et al. Pain (IF 5.9) Pub Date : 2024-09-18 Mariela Rosa-Casillas,Allan I Basbaum
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The association between bullying victimization and back pain in young people: a systematic literature review and meta-analysis. Pain (IF 5.9) Pub Date : 2024-09-18 Nichole Phillips,Benjamin T Brown,Michael P Jones,Natasha Magson,Amber Beynon,Michael S Swain
Back pain is a common and recurrent health complaint in adolescence. Psychosocial factors may be associated with the onset and persistence of back pain symptoms. This systematic review aims to determine the association between bullying victimization and back pain in young people. Observational studies that quantified the association between bullying victimization and back pain in participants were
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Pain mechanistic networks: the development using supervised multivariate data analysis and implications for chronic pain. Pain (IF 5.9) Pub Date : 2024-09-18 Rocco Giordano,Lars Arendt-Nielsen,Maria Carla Gerra,Andreas Kappel,Svend Erik Østergaard,Camila Capriotti,Cristina Dallabona,Kristian Kjær-Staal Petersen
Chronic postoperative pain is present in approximately 20% of patients undergoing total knee arthroplasty. Studies indicate that pain mechanisms are associated with development and maintenance of chronic postoperative pain. The current study assessed pain sensitivity, inflammation, microRNAs, and psychological factors and combined these in a network to describe chronic postoperative pain. This study
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Development and internal validation of a clinical risk tool to predict chronic postsurgical pain in adults: a prospective multicentre cohort study. Pain (IF 5.9) Pub Date : 2024-09-18 Nicholas Papadomanolakis-Pakis,Simon Haroutounian,Johan Kløvgaard Sørensen,Charlotte Runge,Lone Dragnes Brix,Christian Fynbo Christiansen,Lone Nikolajsen
Chronic postsurgical pain (CPSP) is a highly prevalent condition. To improve CPSP management, we aimed to develop and internally validate generalizable point-of-care risk tools for preoperative and postoperative prediction of CPSP 3 months after surgery. A multicentre, prospective, cohort study in adult patients undergoing elective surgery was conducted between May 2021 and May 2023. Prediction models
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Developing neuroimaging-based biomarkers of pain: systematic and coordinated approaches. Pain (IF 5.9) Pub Date : 2024-09-17 Markus Ploner
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Further evidence that peritraumatic 17β-estradiol levels influence chronic posttraumatic pain outcomes in women, data from both humans and animals. Pain (IF 5.9) Pub Date : 2024-09-13 Esther Son,Rachel Gaither,Jarred Lobo,Ying Zhao,Lauren A McKibben,Rhea Arora,Liz Albertorio-Sáez,Jacqueline Mickelson,Britannia J Wanstrath,Simran Bhatia,Jennifer S Stevens,Tanja Jovanovic,Karestan Koenen,Ronald Kessler,Kerry Ressler,Francesca L Beaudoin,Samuel A McLean,Sarah D Linnstaedt
Chronic posttraumatic pain (CPTP) is common after traumatic stress exposure (TSE) and disproportionately burdens women. We previously showed across 3 independent longitudinal cohort studies that, in women, increased peritraumatic 17β-estradiol (E2) levels were associated with substantially lower CPTP over 1 year. Here, we assessed this relationship in a fourth longitudinal cohort and also assessed
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Self-management interventions for chronic widespread pain including fibromyalgia: a systematic review and qualitative evidence synthesis. Pain (IF 5.9) Pub Date : 2024-09-12 Xiao-Yang Hu,Ben Young,Miriam Santer,Hazel Everitt,Jen Pearson,Hannah Bowers,Michael Moore,Paul Little,Tamar Pincus,Cathy Price,Tom Robson,Clara de Barros,Jane Loewy,Jenny Magee,Adam W A Geraghty
Supporting behavioural self-management is increasingly important in the care for chronic widespread pain (CWP), including fibromyalgia. Understanding peoples' experiences of these interventions may elucidate processes and mechanisms that lead to or hinder their intended impact. We conducted a systematic review and thematic synthesis of qualitative studies exploring peoples' experiences of self-management
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Microbiome contributions to pain: a review of the preclinical literature. Pain (IF 5.9) Pub Date : 2024-09-10 McKenna L Pratt,Ashley N Plumb,Aditi Manjrekar,Lucia M Cardona,Cheri K Chan,Juanna M John,Katelyn E Sadler
Over the past 2 decades, the microbiome has received increasing attention for the role that it plays in health and disease. Historically, the gut microbiome was of particular interest to pain scientists studying nociplastic visceral pain conditions given the anatomical juxtaposition of these microorganisms and the neuroimmune networks that drive pain in such diseases. More recently, microbiomes both
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Racial, ethnic, and sex bias in large language model opioid recommendations for pain management. Pain (IF 5.9) Pub Date : 2024-09-06 Cameron C Young,Elizabeth Enichen,Arya Rao,Marc D Succi
Understanding how large language model (LLM) recommendations vary with patient race/ethnicity provides insight into how LLMs may counter or compound bias in opioid prescription. Forty real-world patient cases were sourced from the MIMIC-IV Note dataset with chief complaints of abdominal pain, back pain, headache, or musculoskeletal pain and amended to include all combinations of race/ethnicity and
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11th revision of the International Classification of Diseases chronic primary pain diagnoses in children and adolescents: representation of pediatric patients in the new classification system. Pain (IF 5.9) Pub Date : 2024-09-06 Lisa-Marie Rau,Beatrice Korwisi,Antonia Barke,Michael Frosch,Boris Zernikow,Julia Wager
Chronic pain is common among children and adolescents; however, the diagnoses in the newly developed 11th revision of the International Classification of Diseases (ICD-11) chronic pain chapter are based on adult criteria, overlooking pediatric neurodevelopmental differences. The chronic pain diagnoses have demonstrated good clinical applicability in adults, but to date, no field study has examined
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Extended reality used in the treatment of phantom limb pain: a multicenter, double-blind, randomized controlled trial. Pain (IF 5.9) Pub Date : 2024-09-05 Eva Lendaro,Corry K Van der Sluis,Liselotte Hermansson,Lina Bunketorp-Käll,Helena Burger,Els Keesom,Cathrine Widehammar,Maria Munoz-Novoa,Brian E McGuire,Paul O'Reilly,Eric J Earley,Sonam Iqbal,Morten B Kristoffersen,Anita Stockselius,Lena Gudmundson,Wendy Hill,Martin Diers,Kristi L Turner,Thomas Weiss,Max Ortiz-Catalan
Phantom limb pain (PLP) represents a significant challenge after amputation. This study investigated the use of phantom motor execution (PME) and phantom motor imagery (PMI) facilitated by extended reality (XR) for the treatment of PLP. Both treatments used XR, but PME involved overt execution of phantom movements, relying on the decoding of motor intent using machine learning to enable real-time control
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More work to do: ICD-11 pain diagnoses in children. Pain (IF 5.9) Pub Date : 2024-09-03 Jeremy Gauntlett-Gilbert,Christine Greco
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Treatment mechanism and outcome decoupling effects in cognitive therapy, mindfulness-based stress reduction, and behavior therapy for chronic pain. Pain (IF 5.9) Pub Date : 2024-08-30 James Gerhart,John W Burns,Beverly Thorn,Mark Jensen,James Carmody,Francis Keefe
Findings suggest that cognitive therapy (CT), mindfulness-based stress reduction (MBSR), and behavior therapy (BT) for chronic pain produce improvements through changes in putative mechanisms. Evidence supporting this notion is largely based on findings showing significant associations between treatment mechanism variables and outcomes. An alternative view is that treatments may work by reducing or
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An alternative perspective on the causes of pain in osteoarthritis of the knee and its persistence after total knee replacement surgery. Pain (IF 5.9) Pub Date : 2024-09-01 Marshall Devor
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The physical activity paradox; exploring the relationship with pain outcomes. The Tromsø Study 2015-2016. Pain (IF 5.9) Pub Date : 2024-08-26 Mats Kirkeby Fjeld,Anders Pedersen Årnes,Bo Engdahl,Bente Morseth,Laila Arnesdatter Hopstock,Alexander Horsch,Audun Stubhaug,Bjørn Heine Strand,Anette Hylen Ranhoff,Dagfinn Matre,Christopher Sivert Nielsen,Ólöf Anna Steingrímsdóttir
Paradoxical associations have been observed for leisure-time physical activity (LTPA) and occupational physical activity (OPA) and several health-related outcomes. Typically, higher LTPA is associated with health benefits and high OPA with health hazards. Using data from the Tromsø Study (2015-2016), we assessed how questionnaire-based LTPA and OPA (n = 21,083) and accelerometer-measured physical activity
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Education, gender, and frequent pain among middle-aged and older adults in the United States, England, China, and India. Pain (IF 5.9) Pub Date : 2024-08-26 Chihua Li,Chunyu Liu,Chenfei Ye,Zi Lian,Peiyi Lu
Using cross-sectional data from the United States, England, China, and India, we examined the relationship between education and frequent pain, alongside the modification role of gender in this relationship. We further examined patterns of 3 pain dimensions among participants who reported frequent pain, including pain severity, interference with daily activities, and medication use (these pain dimension
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Application of the grading system for "nociplastic pain" in chronic primary and chronic secondary pain conditions: a field study. Pain (IF 5.9) Pub Date : 2024-08-26 Hannah Schmidt,Armin Drusko,Malika Pia Renz,Lea Schlömp,Heike Tost,Sigrid Schuh-Hofer,Jonas Tesarz,Andreas Meyer-Lindenberg,Rolf-Detlef Treede
The concept "nociplastic pain" has been developed for patients with features of nociceptive system sensitization that are not explained as nociceptive or neuropathic. Here, we tested how well the recently published grading system differentiates between chronic primary and secondary pain conditions. We recruited patients with fibromyalgia (FMS, n = 41), complex regional pain syndrome (CRPS, n = 11)
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Impaired pain in mice lacking first-order posterior medial thalamic neurons. Pain (IF 5.9) Pub Date : 2024-08-23 Paraskevi Sgourdou,Melanie Schaffler,Kyuhyun Choi,Nora M McCall,Justin Burdge,Joelle Williams,Gregory Corder,Marc V Fuccillo,Ishmail Abdus-Saboor,Douglas J Epstein
The thalamus plays an important role in sensory and motor information processing by mediating communication between the periphery and the cerebral cortex. Alterations in thalamic development have profound consequences on sensory and motor function. In this study, we investigated a mouse model in which thalamic nuclei formation is disrupted because of the absence of Sonic hedgehog (Shh) expression from