scholarly journals Fast Synaptic Inhibition in Spinal Sensory Processing and Pain Control

2012 ◽  
Vol 92 (1) ◽  
pp. 193-235 ◽  
Author(s):  
Hanns Ulrich Zeilhofer ◽  
Hendrik Wildner ◽  
Gonzalo E. Yévenes
Keyword(s):  
Chronic Pain ◽  
Dorsal Horn ◽  
Sensory Processing ◽  
Temporal Discrimination ◽  
Sensory Nerve ◽  
Nerve Fibers ◽  
Sensory Stimuli ◽  
Inhibitory Neurotransmission ◽  
Pain Syndromes ◽  
Chronic Pain Syndromes

The two amino acids GABA and glycine mediate fast inhibitory neurotransmission in different CNS areas and serve pivotal roles in the spinal sensory processing. Under healthy conditions, they limit the excitability of spinal terminals of primary sensory nerve fibers and of intrinsic dorsal horn neurons through pre- and postsynaptic mechanisms, and thereby facilitate the spatial and temporal discrimination of sensory stimuli. Removal of fast inhibition not only reduces the fidelity of normal sensory processing but also provokes symptoms very much reminiscent of pathological and chronic pain syndromes. This review summarizes our knowledge of the molecular bases of spinal inhibitory neurotransmission and its organization in dorsal horn sensory circuits. Particular emphasis is placed on the role and mechanisms of spinal inhibitory malfunction in inflammatory and neuropathic chronic pain syndromes.

Pain Syndromes Other Than Headache

2016 ◽  
Author(s):  
Edgar L. Ross
Keyword(s):  
Chronic Pain ◽  
Neuropathic Pain ◽  
Sensory Processing ◽  
Pain Syndrome ◽  
The Body ◽  
Spinal Cord Dorsal Horn ◽  
Opioid Use ◽  
Nerve Injuries ◽  
Pain Syndromes ◽  
Chronic Pain Syndromes

Pain is experienced within a complex biologic, emotional, psychological, and social context that may defy physical examination, diagnostic procedures, and laboratory tests. This chapter aims to empower internists to improve their medical practices in pain management. It provides a scientific background that covers nociception and how sensory processing occurs at multiple levels in the body. Clinical assessment is detailed, as well as diagnostic categories that include mixed or uncertain chronic pain syndromes (back pain, fibromyalgia, postamputation pain, pain from cancer and bone) and neuropathic pain syndromes (polyneuropathy, mononeuropathy multiplex, ganglionopathy, genetic disorders, focal and regional syndromes). Treatment of chronic pain can be surgical or interventional. Pharmacologic treatment for acute and chronic nociceptive pain includes special considerations for geriatric and terminal patients. For treatment of neuropathic pain, medications are the major component. One tables lists iatrogenic nerve injuries that can cause posttraumatic neuralgia and complex regional pain syndrome. Other tables detail stepwise pharmacologic management of neuropathic pain and cite recommendations on opioid use from the Centers for Disease Control and Prevention. One figure illustrates how pain transducers monitor and influence tissue conditions. Other figures show sensory processing in the spinal cord dorsal horn, physical findings in the feet of patients with bilateral foot pain from small-fiber polyneuropathy, illustrate how examination can identify specific nerve injuries causing chronic pain, and provide classification of chronic pain syndromes. This chapter contains 82 references.

Pain Syndromes Other Than Headache

2018 ◽  
Author(s):  
Edgar L. Ross
Keyword(s):  
Chronic Pain ◽  
Neuropathic Pain ◽  
Sensory Processing ◽  
Pain Syndrome ◽  
The Body ◽  
Spinal Cord Dorsal Horn ◽  
Opioid Use ◽  
Nerve Injuries ◽  
Pain Syndromes ◽  
Chronic Pain Syndromes

Pain is experienced within a complex biologic, emotional, psychological, and social context that may defy physical examination, diagnostic procedures, and laboratory tests. This chapter aims to empower internists to improve their medical practices in pain management. It provides a scientific background that covers nociception and how sensory processing occurs at multiple levels in the body. Clinical assessment is detailed, as well as diagnostic categories that include mixed or uncertain chronic pain syndromes (back pain, fibromyalgia, postamputation pain, pain from cancer and bone) and neuropathic pain syndromes (polyneuropathy, mononeuropathy multiplex, ganglionopathy, genetic disorders, focal and regional syndromes). Treatment of chronic pain can be surgical or interventional. Pharmacologic treatment for acute and chronic nociceptive pain includes special considerations for geriatric and terminal patients. For treatment of neuropathic pain, medications are the major component. One tables lists iatrogenic nerve injuries that can cause posttraumatic neuralgia and complex regional pain syndrome. Other tables detail stepwise pharmacologic management of neuropathic pain and cite recommendations on opioid use from the Centers for Disease Control and Prevention. One figure illustrates how pain transducers monitor and influence tissue conditions. Other figures show sensory processing in the spinal cord dorsal horn, physical findings in the feet of patients with bilateral foot pain from small-fiber polyneuropathy, illustrate how examination can identify specific nerve injuries causing chronic pain, and provide classification of chronic pain syndromes. This chapter contains 82 references.

Pain Syndromes Other Than Headache

2016 ◽  
Author(s):  
Edgar L. Ross
Keyword(s):  
Chronic Pain ◽  
Neuropathic Pain ◽  
Sensory Processing ◽  
Pain Syndrome ◽  
The Body ◽  
Spinal Cord Dorsal Horn ◽  
Opioid Use ◽  
Nerve Injuries ◽  
Pain Syndromes ◽  
Chronic Pain Syndromes

Pain is experienced within a complex biologic, emotional, psychological, and social context that may defy physical examination, diagnostic procedures, and laboratory tests. This chapter aims to empower internists to improve their medical practices in pain management. It provides a scientific background that covers nociception and how sensory processing occurs at multiple levels in the body. Clinical assessment is detailed, as well as diagnostic categories that include mixed or uncertain chronic pain syndromes (back pain, fibromyalgia, postamputation pain, pain from cancer and bone) and neuropathic pain syndromes (polyneuropathy, mononeuropathy multiplex, ganglionopathy, genetic disorders, focal and regional syndromes). Treatment of chronic pain can be surgical or interventional. Pharmacologic treatment for acute and chronic nociceptive pain includes special considerations for geriatric and terminal patients. For treatment of neuropathic pain, medications are the major component. One tables lists iatrogenic nerve injuries that can cause posttraumatic neuralgia and complex regional pain syndrome. Other tables detail stepwise pharmacologic management of neuropathic pain and cite recommendations on opioid use from the Centers for Disease Control and Prevention. One figure illustrates how pain transducers monitor and influence tissue conditions. Other figures show sensory processing in the spinal cord dorsal horn, physical findings in the feet of patients with bilateral foot pain from small-fiber polyneuropathy, illustrate how examination can identify specific nerve injuries causing chronic pain, and provide classification of chronic pain syndromes. This chapter contains 82 references.

Clinical Profiles of Patients with Chronic Pain Syndromes of Lumbosacral Localization

TRAUMA ◽  
2016 ◽  
Vol 17 (2) ◽  
pp. 78
Author(s):  
V.I. Romanenko ◽  
I.V. Romanenko ◽  
Yu.I. Romanenko
Keyword(s):  
Chronic Pain ◽  
Pain Syndromes ◽  
Clinical Profiles ◽  
Chronic Pain Syndromes

Radiotherapy-Specific Chronic Pain Syndromes in the Cancer Population: An Evidence-Based Narrative Review

2021 ◽  
Author(s):  
Jay Karri ◽  
Laura Lachman ◽  
Alex Hanania ◽  
Anuj Marathe ◽  
Mani Singh ◽  
...  
Keyword(s):  
Chronic Pain ◽  
Narrative Review ◽  
Evidence Based ◽  
Pain Syndromes ◽  
Chronic Pain Syndromes

scholarly journals P124 Are chronic pain syndromes associated with a unique cytokine profile? A systematic review and meta-analysis

Rheumatology ◽  
2021 ◽  
Vol 60 (Supplement_1) ◽  
Author(s):  
Luke Furtado O'Mahony ◽  
Arnav Srivastava ◽  
Puja Mehta ◽  
Coziana Ciurtin
Keyword(s):  
Systematic Review ◽  
Chronic Pain ◽  
Meta Analysis ◽  
Pooled Analysis ◽  
Cross Sectional ◽  
Pain Syndromes ◽  
Newcastle Ottawa Scale ◽  
Cytokine Milieu ◽  
Analysis Models ◽  
Chronic Pain Syndromes

Abstract Background/Aims  The aetiology of primary chronic pain syndromes (CPS) is highly disputed. One theory suggests that pain is due to a pro-inflammatory cytokine milieu leading to nociceptive activation. We performed a systematic review and meta-analysis aiming to assess differences in cytokines levels in CPS patients versus healthy controls (HC). Methods  Human studies published in English from PubMed, MEDLINE/Scopus and Cochrane databases were searched from inception up to January 2020. We included full text cross-sectional or longitudinal studies with cytokine measurements in CPS patients and HC. We excluded studies with underlying organic pathology. Quality assessment was completed using a modified version of the Newcastle-Ottawa Scale. Random-effects meta-analysis models were used to report pooled effects and 95% CIs. Study registered with PROSPERO (CRD42020193774). Results  Initial search yielded 324 papers, 36 studies (3229 participants) eligible for systematic review and 26 studies (2048 participants) suitable for metaanalysis. There were reproducible findings supporting trends of cytokine levels comparing CPS patients with HC. Eotaxin (chemokine) however was consistently raised in CPS. Meta-analysis showed significantly increased tumour necrosis factor (TNF) (SMD=0.39, p = 0.0009, %95I=0.16-0.63, p < 0.001; I2=70%, Q2 p < 0.001), interleukin (IL)-6 (SMD=0.15, 8 (SMD=0.26, p = 0.01, 95%CI =0.05-0.47; I2=61%, Q2 p = 0.005) and IL-10 (SMD=0.61; %95 = 0.34-0.89, p < 0.001; I2 = 10%, Q2 p = 0.34) in CPS compared to HC. Conclusion  We found significant differences in peripheral blood cytokine profiles of CPS patients compared to HC. However, the distinctive profile associated with CPS includes both pro-inflammatory (TNF-α, IL-6, IL-8), and anti-inflammatory cytokines (IL-10) in pooled analysis, as well as chemokine (eotaxin) signatures. Disclosure  L. Furtado O'Mahony: None. A. Srivastava: None. P. Mehta: None. C. Ciurtin: None.

scholarly journals Sickle cell pain: a critical reappraisal

Blood ◽  
2012 ◽  
Vol 120 (18) ◽  
pp. 3647-3656 ◽  
Author(s):  
Samir K. Ballas ◽  
Kalpna Gupta ◽  
Patricia Adams-Graves
Keyword(s):  
Chronic Pain ◽  
Neuropathic Pain ◽  
Sickle Cell ◽  
Multiorgan Failure ◽  
Organ Damage ◽  
Acute Chest Syndrome ◽  
Prodromal Phase ◽  
Pain Syndromes ◽  
Painful Episode ◽  
Chronic Pain Syndromes

AbstractSickle cell pain includes 3 types: acute recurrent painful crises, chronic pain syndromes, and neuropathic pain. The acute painful crisis is the hallmark of the disease and the most common cause of hospitalization and treatment in the emergency department. It evolves through 4 phases: prodromal, initial, established, and resolving. Each acute painful episode is associated with inflammation that worsens with recurrent episodes, often culminating in serious complications and organ damage, such as acute chest syndrome, multiorgan failure, and sudden death. Three pathophysiologic events operate in unison during the prodromal phase of the crisis: vaso-occlusion, inflammation, and nociception. Aborting the acute painful episode at the prodromal phase could potentially prevent or minimize tissue damage. Our hypothesis is that managing these events with hydration, anti-inflammatory drugs, aggressive analgesia, and possibly vasodilators could abort the crisis and prevent or minimize further damage. Chronic pain syndromes are associated with or accompany avascular necrosis and leg ulcers. Neuropathic pain is not well studied in patients with sickle cell disease but has been modeled in the transgenic sickle mouse. Management of sickle cell pain should be based on its own pathophysiologic mechanisms rather than borrowing guidelines from other nonsickle pain syndromes.

Sign in / Sign up

Export Citation Format

Share Document