Locating the Site of Neuropathic Pain In Vivo Using MMP-12-Targeted Magnetic Nanoparticles.

Locating the Site of Neuropathic Pain In Vivo Using MMP-12-Targeted Magnetic Nanoparticles. Pain Res Manag. 2019;2019:9394715 Authors: Husain SF, Lam RWM, Hu T, Ng MWF, Liau ZQG, Nagata K, Khanna S, Lam Y, Bhakoo K, Ho RCM, Wong HK Abstract Neuropathic pain remains underrecognised and ineffectively treated in chronic pain sufferers. Consequently, their quality of life is considerably reduced, and substantial healthcare costs are incurred. The anatomical location of pain must be identified for definitive diagnosis, but current neuropsychological tools cannot do so. Matrix metalloproteinases (MMP) are thought to maintain peripheral neuroinflammation, and MMP-12 is elevated particularly in such pathological conditions. Magnetic resonance imaging (MRI) of the peripheral nervous system has made headway, owing to its high-contrast resolution and multiplanar features. We sought to improve MRI specificity of neural lesions, by constructing an MMP-12-targeted magnetic iron oxide nanoparticle (IONP). Its in vivo efficiency was evaluated in a rodent model of neuropathic pain, where the left lumbar 5 (L5) spinal nerve was tightly ligated. Spinal nerve ligation (SNL) successfully induced mechanical allodynia, and thermal hyperalgesia, in the left hind paw throughout the study duration. These neuropathy characteristics were absent in animals that underwent sham surgery. MMP-12 upregulation with concomitant macrophage infiltration, demyelination, and elastin fibre loss...
Source: Pain Research and Management - Category: Anesthesiology Authors: Tags: Pain Res Manag Source Type: research

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Accumulating evidence has shown that complicated brain systems are involved in the development and maintenance of chronic low back pain (cLBP), but the association between brain functional changes and clinical outcomes remains unclear. Here, we used resting-state functional magnetic resonance imaging (fMRI) and multivariate pattern analysis to identify abnormal functional connectivity (FC) between the default mode, sensorimotor, salience, and central executive brain networks in cLBP and tested whether abnormal FCs are related to pain and comorbid symptoms. Fifty cLBP patients and 44 matched healthy controls (HCs) underwent...
Source: Pain - Category: Anesthesiology Tags: Research Paper Source Type: research
This study aimed to investigate a potential correlation between NGF serum levels and brain structural differences in schizophrenia. Furthermore, a potential overlap between the results of a whole brain correlation analysis between GMV and NGF serum levels and the results of GMV reductions in schizophrenia patients were identified in a conjunction analysis.Materials and MethodsSubjectsEighteen schizophrenia patients from the Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital RWTH Aachen, Aachen, Germany, and 19 gender- and age-matched healthy controls from the general population participated in ...
Source: Frontiers in Psychiatry - Category: Psychiatry Source Type: research
Sleep Is Compromised in −12° Head Down Tilt Position Alessa L. Boschert1*, David Elmenhorst2,3, Peter Gauger1, Zhili Li4, Maria T. Garcia-Gutierrez5, Darius Gerlach1, Bernd Johannes1, Jochen Zange1, Andreas Bauer2,6 and Jörn Rittweger1,7 1Department of Muscle and Bone Metabolism, German Aerospace Center (DLR), Institute of Aerospace Medicine, Cologne, Germany 2Forschungszentrum Jülich, Institute of Neuroscience and Medicine (INM-2), Jülich, Germany 3Division of Medical Psychology, University of Bonn, Bonn, Germany 4State Key Laboratory of Space Medicine Fundamentals and Application, China ...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
Conclusion Trochlear pain (trochleodynia) is becoming recognized as a set of disorders that can present in isolation or concomitantly with co-existing migraines, tension-type headaches, or other headache disorders, possibly explaining subpar symptom control in a small but significant number of individuals globally. Trochleodynia features unilateral periocular pain that may involve the ipsilateral hemicranium. Pain exacerbation occurs with trochlear palpation and supraduction of the affected eye especially in the adducted position. Trochleodynia may respond to oral NSAIDs if symptoms are mild and of recent onset. While ora...
Source: Frontiers in Neurology - Category: Neurology Source Type: research
The objectives of this study were to define the role for surgery in the treatment of chronic low back pain (cLBP) and to develop a new classification of cLBP based on the pattern of injury.HypothesisSurgery may benefit patients with cLBP, and a new classification based on the injury pattern may be of interest.MethodA systematic literature review was performed by searching Medline, the Cochrane Library, the French public health database (Banque de Données en Santé Publique), Science Direct, and the National Guideline Clearinghouse. The main search terms were “back pain” OR “lumbar” OR &...
Source: Orthopaedics and Traumatology: Surgery and Research - Category: Orthopaedics Source Type: research
The cell phone blares out reveille. Your eyes open reluctantly and you realize it’s morning, having only gone to bed four hours earlier because of a late-night party. You creak out of bed to ready yourself for work, arthritic joints hurting much more than usual. A painful day lies ahead even after taking ibuprofen. Does this sound familiar? If it does, you are not alone. Nearly 70% of Americans report getting insufficient sleep on a regular basis, and approximately 20% of Americans suffer from chronic pain. Recently, the intersection between these two conditions has become more apparent. The association between sleep...
Source: Harvard Health Blog - Category: Consumer Health News Authors: Tags: Fatigue Pain Management Sleep Source Type: blogs
If you are one of the more than 100 million Americans suffering with chronic pain, you know how desperate you can get searching for relief. For constant or chronic pain, sometimes knowing that you can only get temporary relief from medications sits at the back of your brain and sets up pain anticipation. Shouldn’t there be a better way, an approach or approaches that don’t rely on pharmaceutical drugs to combat pain? According to new research, there are some new pain relief methods that look very promising to do just that. Treatment from Strangers Mat Provide Unexpected Pain Relief It may seem counter-intuitiv...
Source: World of Psychology - Category: Psychiatry & Psychology Authors: Tags: Chronic Pain Health-related Mental Health and Wellness Mindfulness Psychology Research Treatment Source Type: blogs
Abstract Low back pain is usually nonspecific or mechanical. Mechanical low back pain arises intrinsically from the spine, intervertebral disks, or surrounding soft tissues. Clinical clues, or red flags, may help identify cases of nonmechanical low back pain and prompt further evaluation or imaging. Red flags include progressive motor or sensory loss, new urinary retention or overflow incontinence, history of cancer, recent invasive spinal procedure, and significant trauma relative to age. Imaging on initial presentation should be reserved for when there is suspicion for cauda equina syndrome, malignancy, fracture...
Source: American Family Physician - Category: Primary Care Authors: Tags: Am Fam Physician Source Type: research
We report a surgical case of idiopathic and chronic SSEH. A 61-year-old woman suffered a sudden onset of severe lumbar pain during sleep. She had no history of trauma, spinal surgery, or hypertension. Magnetic resonance imaging revealed a lumbar chronic epidural hematoma which compressed the dural sac behind and extended from L2 to L5. This patient underwent the partial evacuation of the hematoma with partial hemilaminectomy on left at L2/3, resulting in immediate pain relief and resolution of symptoms and almost absorption of the hematoma within 1 week of the procedure. We presented this rare case and reviewed idiopathic ...
Source: Neurologia Medico-Chirurgica - Category: Neurosurgery Tags: Neurol Med Chir (Tokyo) Source Type: research
CONCLUSION Cognitive impairment can affect daily functioning, quality of life, and capacity to work in patients with cancer and those in remission. Consequently, cognitive assessment is now an important and necessary part of a comprehensive oncological care plan. Cancer-related cognitive impairment might be due to the direct effects of the cancer itself, nonspecific factors, or comorbid conditions that are independent of the disease and/or due to the adverse effects of the treatment or combination of treatments given for the disease. The prevalence and extent of cognitive impairment associated with cancer is recognized but...
Source: Innovations in Clinical Neuroscience - Category: Neuroscience Authors: Tags: Cognition Current Issue Neuro oncology Neurology Review cancer chemotherapy cognitive impairment neuropsychological assessment treatment Source Type: research
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