1
|
Mallick-Searle T, Adler JA. Update on Treating Painful Diabetic Peripheral Neuropathy: A Review of Current US Guidelines with a Focus on the Most Recently Approved Management Options. J Pain Res 2024; 17:1005-1028. [PMID: 38505500 PMCID: PMC10949339 DOI: 10.2147/jpr.s442595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 02/26/2024] [Indexed: 03/21/2024] Open
Abstract
Painful diabetic peripheral neuropathy (DPN) is a highly prevalent and disabling complication of diabetes that is often misdiagnosed and undertreated. The management of painful DPN involves treating its underlying cause via lifestyle modifications and intensive glucose control, targeting its pathogenesis, and providing symptomatic pain relief, thereby improving patient function and health-related quality of life. Four pharmacologic options are currently approved by the US Food and Drug Administration (FDA) to treat painful DPN. These include three oral medications (duloxetine, pregabalin, and tapentadol extended release) and one topical agent (capsaicin 8% topical system). More recently, the FDA approved several spinal cord stimulation (SCS) devices to treat refractory painful DPN. Although not FDA-approved specifically to treat painful DPN, tricyclic antidepressants, serotonin/norepinephrine reuptake inhibitors, gabapentinoids, and sodium channel blockers are common first-line oral options in clinical practice. Other strategies may be used as part of individualized comprehensive pain management plans. This article provides an overview of the most recent US guidelines for managing painful DPN, with a focus on the two most recently approved treatment options (SCS and capsaicin 8% topical system), as well as evidence for using FDA-approved and guideline-supported drugs and devices. Also discussed are unmet needs for this patient population, and evidence for potential future treatments for painful DPN, including drugs with novel mechanisms of action, electrical stimulation devices, and nutraceuticals.
Collapse
|
2
|
Staudt MD, Prabhala T, Sheldon BL, Quaranta N, Zakher M, Bhullar R, Pilitsis JG, Argoff CE. Current Strategies for the Management of Painful Diabetic Neuropathy. J Diabetes Sci Technol 2022; 16:341-352. [PMID: 32856490 PMCID: PMC8861791 DOI: 10.1177/1932296820951829] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The development of painful diabetic neuropathy (PDN) is a common complication of chronic diabetes that can be associated with significant disability and healthcare costs. Prompt symptom identification and aggressive glycemic control is essential in controlling the development of neuropathic complications; however, adequate pain relief remains challenging and there are considerable unmet needs in this patient population. Although guidelines have been established regarding the pharmacological management of PDN, pain control is inadequate or refractory in a high proportion of patients. Pharmacotherapy with anticonvulsants (pregabalin, gabapentin) and antidepressants (duloxetine) are common first-line agents. The use of oral opioids is associated with considerable morbidity and mortality and can also lead to opioid-induced hyperalgesia. Their use is therefore discouraged. There is an emerging role for neuromodulation treatment modalities including intrathecal drug delivery, spinal cord stimulation, and dorsal root ganglion stimulation. Furthermore, consideration of holistic alternative therapies such as yoga and acupuncture may augment a multidisciplinary treatment approach. This aim of this review is to focus on the current management strategies for the treatment of PDN, with a discussion of treatment rationale and practical considerations for their implementation.
Collapse
Affiliation(s)
- Michael D Staudt
- Department of Neurosurgery, Albany Medical College, Albany, New York, USA
| | - Tarun Prabhala
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany NY, USA
| | - Breanna L Sheldon
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany NY, USA
| | - Nicholas Quaranta
- Department of Anesthesiology, Albany Medical College, Albany, New York, USA
| | - Michael Zakher
- Department of Anesthesiology, Albany Medical College, Albany, New York, USA
| | - Ravneet Bhullar
- Department of Anesthesiology, Albany Medical College, Albany, New York, USA
| | - Julie G Pilitsis
- Department of Neurosurgery, Albany Medical College, Albany, New York, USA
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany NY, USA
| | - Charles E Argoff
- Department of Neurology, Albany Medical College, Albany, New York, USA
| |
Collapse
|
3
|
Price R, Smith D, Franklin G, Gronseth G, Pignone M, David WS, Armon C, Perkins BA, Bril V, Rae-Grant A, Halperin J, Licking N, O'Brien MD, Wessels SR, MacGregor LC, Fink K, Harkless LB, Colbert L, Callaghan BC. Oral and Topical Treatment of Painful Diabetic Polyneuropathy: Practice Guideline Update Summary: Report of the AAN Guideline Subcommittee. Neurology 2022; 98:31-43. [PMID: 34965987 DOI: 10.1212/wnl.0000000000013038] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 10/15/2021] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE To update the 2011 American Academy of Neurology (AAN) guideline on the treatment of painful diabetic neuropathy (PDN) with a focus on topical and oral medications and medical class effects. METHODS The authors systematically searched the literature from January 2008 to April 2020 using a structured review process to classify the evidence and develop practice recommendations using the AAN 2017 Clinical Practice Guideline Process Manual. RESULTS Gabapentinoids (standardized mean difference [SMD] 0.44; 95% confidence interval [CI], 0.21-0.67), serotonin-norepinephrine reuptake inhibitors (SNRIs) (SMD 0.47; 95% CI, 0.34-0.60), sodium channel blockers (SMD 0.56; 95% CI, 0.25-0.87), and SNRI/opioid dual mechanism agents (SMD 0.62; 95% CI, 0.38-0.86) all have comparable effect sizes just above or just below our cutoff for a medium effect size (SMD 0.5). Tricyclic antidepressants (TCAs) (SMD 0.95; 95% CI, 0.15-1.8) have a large effect size, but this result is tempered by a low confidence in the estimate. RECOMMENDATIONS SUMMARY Clinicians should assess patients with diabetes for PDN (Level B) and those with PDN for concurrent mood and sleep disorders (Level B). In patients with PDN, clinicians should offer TCAs, SNRIs, gabapentinoids, and/or sodium channel blockers to reduce pain (Level B) and consider factors other than efficacy (Level B). Clinicians should offer patients a trial of medication from a different effective class when they do not achieve meaningful improvement or experience significant adverse effects with the initial therapeutic class (Level B) and not use opioids for the treatment of PDN (Level B).
Collapse
Affiliation(s)
- Raymond Price
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Don Smith
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Gary Franklin
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Gary Gronseth
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Michael Pignone
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - William S David
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Carmel Armon
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Bruce A Perkins
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Vera Bril
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Alexander Rae-Grant
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - John Halperin
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Nicole Licking
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Mary Dolan O'Brien
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Scott R Wessels
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor.
| | - Leslie C MacGregor
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Kenneth Fink
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Lawrence B Harkless
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Lindsay Colbert
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| | - Brian C Callaghan
- From the Department of Neurology (R.P.), University of Pennsylvania, Philadelphia; Department of Neurology (D.S.), University of Colorado, Aurora; Department of Neurology (G.F.), University of Washington, Seattle; Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City; Department of Internal Medicine (M.P.), The University of Texas at Austin Dell Medical School; Department of Neurology (W.S.D.), Massachusetts General Hospital, Boston; Department of Neurology (C.A.), Tel Aviv University Sackler School of Medicine and Shamir (Assaf Harofeh) Medical Center, Israel; Leadership Sinai Centre for Diabetes (B.A.P.), Sinai Health System, University of Toronto; Division of Neurology (V.B.), Department of Medicine, Toronto General Hospital, Canada; Professor Emeritus (A.R.-G.), Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, OH; Department of Neurosciences (J.H.), Overlook Medical Center, Summit, NJ; New West Physicians (N.L.), Golden, CO; American Academy of Neurology (M.D.O., S.R.W.), Minneapolis, MN; Neuropathy Action Foundation (L.C.M.), Santa Ana, CA; Kamehameha Schools (K.F.), Honolulu, HI; University of Texas Rio Grande Valley School of Podiatric Medicine (L.B.H.), Edinburg; The Foundation for Peripheral Neuropathy (L.C.), Buffalo Grove, IL; and Department of Neurology (B.C.C.), University of Michigan, Ann Arbor
| |
Collapse
|
4
|
Sloan G, Alam U, Selvarajah D, Tesfaye S. The Treatment of Painful Diabetic Neuropathy. Curr Diabetes Rev 2022; 18:e070721194556. [PMID: 34238163 DOI: 10.2174/1573399817666210707112413] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 02/18/2021] [Accepted: 03/08/2021] [Indexed: 11/22/2022]
Abstract
Painful diabetic peripheral neuropathy (painful-DPN) is a highly prevalent and disabling condition, affecting up to one-third of patients with diabetes. This condition can have a profound impact resulting in a poor quality of life, disruption of employment, impaired sleep, and poor mental health with an excess of depression and anxiety. The management of painful-DPN poses a great challenge. Unfortunately, currently there are no Food and Drug Administration (USA) approved disease-modifying treatments for diabetic peripheral neuropathy (DPN) as trials of putative pathogenetic treatments have failed at phase 3 clinical trial stage. Therefore, the focus of managing painful- DPN other than improving glycaemic control and cardiovascular risk factor modification is treating symptoms. The recommended treatments based on expert international consensus for painful- DPN have remained essentially unchanged for the last decade. Both the serotonin re-uptake inhibitor (SNRI) duloxetine and α2δ ligand pregabalin have the most robust evidence for treating painful-DPN. The weak opioids (e.g. tapentadol and tramadol, both of which have an SNRI effect), tricyclic antidepressants such as amitriptyline and α2δ ligand gabapentin are also widely recommended and prescribed agents. Opioids (except tramadol and tapentadol), should be prescribed with caution in view of the lack of definitive data surrounding efficacy, concerns surrounding addiction and adverse events. Recently, emerging therapies have gained local licenses, including the α2δ ligand mirogabalin (Japan) and the high dose 8% capsaicin patch (FDA and Europe). The management of refractory painful-DPN is difficult; specialist pain services may offer off-label therapies (e.g. botulinum toxin, intravenous lidocaine and spinal cord stimulation), although there is limited clinical trial evidence supporting their use. Additionally, despite combination therapy being commonly used clinically, there is little evidence supporting this practise. There is a need for further clinical trials to assess novel therapeutic agents, optimal combination therapy and existing agents to determine which are the most effective for the treatment of painful-DPN. This article reviews the evidence for the treatment of painful-DPN, including emerging treatment strategies such as novel compounds and stratification of patients according to individual characteristics (e.g. pain phenotype, neuroimaging and genotype) to improve treatment responses.
Collapse
Affiliation(s)
- Gordon Sloan
- Diabetes Research Unit, Royal Hallamshire Hospital, Sheffield Teaching Hospitals, NHS Foundation Trust, Sheffield, UK
| | - Uazman Alam
- Department of Cardiovascular and Metabolic Medicine and the Pain Research Institute, Institute of Life Course and Medical Sciences, University of Liverpool, and Liverpool University Hospital, NHS Foundation Trust, Liverpool, UK
- Division of Diabetes, Endocrinology and Gastroenterology, Institute of Human Development, University of Manchester, Manchester, UK
| | - Dinesh Selvarajah
- Diabetes Research Unit, Royal Hallamshire Hospital, Sheffield Teaching Hospitals, NHS Foundation Trust, Sheffield, UK
- Department of Oncology and Human Metabolism, University of Sheffield, Sheffield, UK
| | - Solomon Tesfaye
- Diabetes Research Unit, Royal Hallamshire Hospital, Sheffield Teaching Hospitals, NHS Foundation Trust, Sheffield, UK
| |
Collapse
|
5
|
Luna R, Talanki Manjunatha R, Bollu B, Jhaveri S, Avanthika C, Reddy N, Saha T, Gandhi F. A Comprehensive Review of Neuronal Changes in Diabetics. Cureus 2021; 13:e19142. [PMID: 34868777 PMCID: PMC8628358 DOI: 10.7759/cureus.19142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2021] [Indexed: 12/11/2022] Open
Abstract
There has been an exponential rise in diabetes mellitus (DM) cases on a global scale. Diabetes affects almost every system of the body, and the nervous system is no exception. Although the brain is dependent on glucose, providing it with the energy required for optimal functionality, glucose also plays a key role in the regulation of oxidative stress, cell death, among others, which furthermore contribute to the pathophysiology of neurological disorders. The variety of biochemical processes engaged in this process is only matched by the multitude of clinical consequences resulting from it. The wide-ranging effects on the central and peripheral nervous system include, but are not limited to axonopathies, neurodegenerative diseases, neurovascular diseases, and general cognitive impairment. All language search was conducted on MEDLINE, COCHRANE, EMBASE, and GOOGLE SCHOLAR till September 2021. The following search strings and Medical Subject Headings (MeSH terms) were used: "Diabetes Mellitus," "CNS," "Diabetic Neuropathy," and "Insulin." We explored the literature on diabetic neuropathy, covering its epidemiology, pathophysiology with the respective molecular pathways, clinical consequences with a special focus on the central nervous system and finally, measures to prevent and treat neuronal changes. Diabetes is slowly becoming an epidemic, rapidly increasing the clinical burden on account of its wide-ranging complications. This review focuses on the neuronal changes occurring in diabetes such as the impact of hyperglycemia on brain function and structure, its association with various neurological disorders, and a few diabetes-induced peripheral neuropathic changes. It is an attempt to summarize the relevant literature about neuronal consequences of DM as treatment options available today are mostly focused on achieving better glycemic control; further research on novel treatment options to prevent or delay the progression of neuronal changes is still needed.
Collapse
Affiliation(s)
- Rudy Luna
- Neurofisiología, Instituto Nacional de Neurologia y Neurocirugia, CDMX, MEX
| | | | | | | | - Chaithanya Avanthika
- Medicine and Surgery; Pediatrics, Karnataka Institute of Medical Sciences, Hubli, IND
| | - Nikhil Reddy
- Internal Medicine, Kamineni Academy of Medical Science and Research Centre, Hyderabad, IND
| | - Tias Saha
- Internal Medicine, Diabetic Association Medical College, Faridpur, BGD
| | - Fenil Gandhi
- Medicine, Shree Krishna Hospital, Anand, IND
- Research Project Associate, Memorial Sloan Kettering Cancer Center, New York, USA
| |
Collapse
|
6
|
Kale MB, Bajaj K, Umare M, Wankhede NL, Taksande BG, Umekar MJ, Upaganlawar A. Exercise and Nutraceuticals: Eminent approach for Diabetic Neuropathy. Curr Mol Pharmacol 2021; 15:108-128. [PMID: 34191703 DOI: 10.2174/1874467214666210629123010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/28/2021] [Accepted: 03/05/2021] [Indexed: 11/22/2022]
Abstract
Diabetic neuropathy is an incapacitating chronic pathological condition that encompasses a large group of diseases and manifestations of nerve damage. It affects approximately 50% of patients with diabetes mellitus. Autonomic, sensory, and motor neurons are affected. Disabilities are severe, along with poor recovery and diverse pathophysiology. Physical exercise and herbal-based therapies have the potential to decrease the disabilities associated with diabetic neuropathy. Aerobic exercises like walking, weight lifting, the use of nutraceuticals and herbal extracts are found to be effective. Literature from the public domain was studied emphasizing various beneficial effects of different exercises, use of herbal and nutraceuticals for their therapeutic action in diabetic neuropathy. Routine exercises and administration of herbal and nutraceuticals, either the extract of plant material containing the active phytoconstituent or isolated phytoconstituent at safe concentration, have been shown to have promising positive action in the treatment of diabetic neuropathy. Exercise has shown promising effects on vascular and neuronal health and has proven to be well effective in the treatment as well as prevention of diabetic neuropathy by various novel mechanisms, including herbal and nutraceuticals therapy is also beneficial for the condition. They primarily show the anti-oxidant effect, secretagogue, anti-inflammatory, analgesic, and neuroprotective action. Severe adverse events are rare with these therapies. The current review investigates the benefits of exercise and nutraceutical therapies in the treatment of diabetic neuropathy.
Collapse
Affiliation(s)
- Mayur Bhimrao Kale
- Shrimati Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur 441002, Maharashtra, India
| | - Komal Bajaj
- Shrimati Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur 441002, Maharashtra, India
| | - Mohit Umare
- Shrimati Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur 441002, Maharashtra, India
| | - Nitu L Wankhede
- Shrimati Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur 441002, Maharashtra, India
| | | | - Milind Janrao Umekar
- Shrimati Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur 441002, Maharashtra, India
| | - Aman Upaganlawar
- SNJB's Shriman Sureshdada Jain College of Pharmacy, Neminagar, Chandwad-42310, Nasik, Maharashtra, India
| |
Collapse
|
7
|
Liampas A, Rekatsina M, Vadalouca A, Paladini A, Varrassi G, Zis P. Pharmacological Management of Painful Peripheral Neuropathies: A Systematic Review. Pain Ther 2020; 10:55-68. [PMID: 33145709 PMCID: PMC8119529 DOI: 10.1007/s40122-020-00210-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/08/2020] [Indexed: 12/28/2022] Open
Abstract
Introduction Peripheral neuropathic pain (PNP) arises either acutely or in the chronic phase of a lesion or disease of the peripheral nervous system and is associated with a notable disease burden. The management of PNP is often challenging. The aim of this systematic review was to evaluate current evidence, derived from randomized controlled trials (RCTs) that have assessed pharmacological interventions for the treatment of PNP due to polyneuropathy (PN). Methods A systematic search of the PubMed database led to the identification of 538 papers, of which 457 were excluded due to not meeting the eligibility criteria, and two articles were identified through screening of the reference lists of the 81 eligible studies. Ultimately, 83 papers were included in this systematic review. Results The best available evidence for the management of painful diabetic polyneuropathy (DPN) is for amitriptyline, duloxetine, gabapentin, pregabalin and venlafaxine as monotherapies and oxycodone as add-on therapy (level II of evidence). Tramadol appears to be effective when used as a monotherapy and add-on therapy in patients with PN of various etiologies (level II of evidence). Weaker evidence (level III) is available on the effectiveness of several other agents discussed in this review for the management of PNP due to PN. Discussion Response to treatment may be affected by the underlying pathophysiological mechanisms that are involved in the pathogenesis of the PN and, therefore, it is very important to thoroughly investigate patients presenting with PNP to determine the causes of this neuropathy. Future RCTs should be conducted to shed more light on the use of pharmacological approaches in patients with other forms of PNP and to design specific treatment algorithms. Electronic supplementary material The online version of this article (10.1007/s40122-020-00210-3) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
| | | | - Athina Vadalouca
- Pain and Palliative Care Center, Athens Medical Center, Athens, Greece
| | - Antonella Paladini
- Department of Life, Health and Environmental Sciences (MESVA), University of L'Aquila, L'Aquila, Italy
| | | | | |
Collapse
|
8
|
Mineral rich algae with pine bark improved pain, physical function and analgesic use in mild-knee joint osteoarthritis, compared to Glucosamine: A randomized controlled pilot trial. Complement Ther Med 2020; 50:102349. [DOI: 10.1016/j.ctim.2020.102349] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/15/2020] [Accepted: 02/17/2020] [Indexed: 12/17/2022] Open
|
9
|
MacDonald DI, Wood JN, Emery EC. Molecular mechanisms of cold pain. NEUROBIOLOGY OF PAIN (CAMBRIDGE, MASS.) 2020; 7:100044. [PMID: 32090187 PMCID: PMC7025288 DOI: 10.1016/j.ynpai.2020.100044] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/23/2020] [Accepted: 01/24/2020] [Indexed: 12/17/2022]
Abstract
The sensation of cooling is essential for survival. Extreme cold is a noxious stimulus that drives protective behaviour and that we thus perceive as pain. However, chronic pain patients suffering from cold allodynia paradoxically experience innocuous cooling as excruciating pain. Peripheral sensory neurons that detect decreasing temperature express numerous cold-sensitive and voltage-gated ion channels that govern their response to cooling in health and disease. In this review, we discuss how these ion channels control the sense of cooling and cold pain under physiological conditions, before focusing on the molecular mechanisms by which ion channels can trigger pathological cold pain. With the ever-rising number of patients burdened by chronic pain, we end by highlighting the pressing need to define the cells and molecules involved in cold allodynia and so identify new, rational drug targets for the analgesic treatment of cold pain.
Collapse
|
10
|
Marmoy OR, Furlong PL, Moore CEG. Upper and lower limb motor axons demonstrate differential excitability and accommodation to strong hyperpolarizing currents during induced hyperthermia. J Neurophysiol 2019; 121:2061-2070. [PMID: 30917073 DOI: 10.1152/jn.00464.2018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Length-dependent peripheral neuropathy typically involves the insidious onset of sensory loss in the lower limbs before later progressing proximally. Recent evidence proposes hyperpolarization-activated cyclic nucleotide-gated (HCN) channels as dysfunctional in rodent models of peripheral neuropathy, and therefore differential expression of HCN channels in the lower limbs was hypothesized as a pathophysiological mechanism accounting for the pattern of symptomatology within this study. We studied six healthy participants, using motor axon excitability including strong and long [-70% and -100% hyperpolarizing threshold electrotonus (TEh)] hyperpolarizing currents to preferably study HCN channel function from the median and tibial nerves from high (40%) and low (20%) threshold. This was recorded at normothermia (~32°C) and then repeated during hyperthermia (~40°C) as an artificial hyperpolarizing axon stress. Significant differences between recovery cycle, superexcitability, accommodation to small depolarizing currents, and alterations in late stages of the inward-rectifying currents of strongest (-70% and -100% TEh) currents were observed in the lower limbs during hyperthermia. We demonstrate differences in late IH current flow, which implies higher expression of HCN channel isoforms. The findings also indicate their potential inference in the symptomatology of length-dependent peripheral neuropathies and may be a unique target for minimizing symptomatology and pathogenesis in acquired disease. NEW & NOTEWORTHY This study demonstrates nerve excitability differences between the upper and lower limbs during hyperthermia, an experimentally induced axonal stress. The findings indicate that there is differential expression of slow hyperpolarization-activated cyclic nucleotide-gated (HCN) channel isoforms between the upper and lower limbs, which was demonstrated through strong, long hyperpolarizing currents during hyperthermia. Such mechanisms may underlie postural control but render the lower limbs susceptible to dysfunction in disease states.
Collapse
Affiliation(s)
- Oliver R Marmoy
- Department of Clinical Neurophysiology, Portsmouth Hospitals NHS Trust, Portsmouth , United Kingdom.,Aston University , Birmingham , United Kingdom
| | | | - Christopher E G Moore
- Department of Clinical Neurophysiology, Portsmouth Hospitals NHS Trust, Portsmouth , United Kingdom
| |
Collapse
|
11
|
Guerrero-Alba R, Barragán-Iglesias P, González-Hernández A, Valdez-Moráles EE, Granados-Soto V, Condés-Lara M, Rodríguez MG, Marichal-Cancino BA. Some Prospective Alternatives for Treating Pain: The Endocannabinoid System and Its Putative Receptors GPR18 and GPR55. Front Pharmacol 2019; 9:1496. [PMID: 30670965 PMCID: PMC6331465 DOI: 10.3389/fphar.2018.01496] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 12/07/2018] [Indexed: 12/12/2022] Open
Abstract
Background: Marijuana extracts (cannabinoids) have been used for several millennia for pain treatment. Regarding the site of action, cannabinoids are highly promiscuous molecules, but only two cannabinoid receptors (CB1 and CB2) have been deeply studied and classified. Thus, therapeutic actions, side effects and pharmacological targets for cannabinoids have been explained based on the pharmacology of cannabinoid CB1/CB2 receptors. However, the accumulation of confusing and sometimes contradictory results suggests the existence of other cannabinoid receptors. Different orphan proteins (e.g., GPR18, GPR55, GPR119, etc.) have been proposed as putative cannabinoid receptors. According to their expression, GPR18 and GPR55 could be involved in sensory transmission and pain integration. Methods: This article reviews select relevant information about the potential role of GPR18 and GPR55 in the pathophysiology of pain. Results: This work summarized novel data supporting that, besides cannabinoid CB1 and CB2 receptors, GPR18 and GPR55 may be useful for pain treatment. Conclusion: There is evidence to support an antinociceptive role for GPR18 and GPR55.
Collapse
Affiliation(s)
- Raquel Guerrero-Alba
- Departamento de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Paulino Barragán-Iglesias
- School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX, United States
| | - Abimael González-Hernández
- Departamento de Neurobiología del Desarrollo y Neurofisiología, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Santiago de Querétaro, Mexico
| | - Eduardo E Valdez-Moráles
- Cátedras CONACYT, Departamento de Cirugía, Centro de Ciencias Biomédicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Vinicio Granados-Soto
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, Mexico City, Mexico
| | - Miguel Condés-Lara
- Departamento de Neurobiología del Desarrollo y Neurofisiología, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Santiago de Querétaro, Mexico
| | - Martín G Rodríguez
- Departamento de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Bruno A Marichal-Cancino
- Departamento de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| |
Collapse
|
12
|
Best TJ, Best CA, Best AA, Fera LA. Surgical peripheral nerve decompression for the treatment of painful diabetic neuropathy of the foot - A level 1 pragmatic randomized controlled trial. Diabetes Res Clin Pract 2019; 147:149-156. [PMID: 30081106 DOI: 10.1016/j.diabres.2018.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 07/12/2018] [Accepted: 08/01/2018] [Indexed: 10/28/2022]
Abstract
AIMS To assess the efficacy of surgical decompression of lower extremity nerves for the treatment of painful diabetic peripheral sensorimotor polyneuropathy (DPN). METHODS People with painful diabetic neuropathy were randomized single-blind to a lower extremity decompression surgery (n = 12) or observation (n = 10) for 1 year. RESULTS Pain was the primary outcome assessed with 2 measures. The McGill pain visual analogue scores over time changed within the groups (p for time < 0.0001), and changed differently over time within the groups (p for group × time = 0.0138). The NeuroQoL pain sensitivity analysis significantly changed from baseline to 12 months comparing intervention to control (p = 0.0079), and the joint effect of group and time on pain scores was statistically significant (p for group × time = 0.0009). At the study end-point of 12 months, intervention group participants had over 3 times the odds of rating their pain as "better" compared to "unchanged" or "worse" in the control group (p = 0.0177). CONCLUSIONS Surgical decompression of lower limb nerves was an effective treatment for decreasing pain in patients with DPN and superimposed nerve compressions.
Collapse
Affiliation(s)
| | | | - Alyssa A Best
- London School of Economics and Political Science, London, United Kingdom
| | - Luke A Fera
- Northern Ontario School of Medicine, Sudbury, Canada
| |
Collapse
|
13
|
Abstract
Chronic pain is a frequent condition that affects an estimated 20% of people worldwide, accounting for 15%-20% of doctors' appointments (Treede et al., 2015). It lacks the acute warning function of physiologic nociception, and instead involves the activation of multiple neurophysiologic mechanisms in the somatosensory system, a complex neuronal network under the control of powerful autoregulatory loops and able to undergo rapid neuroplastic alteration (Verdu et al., 2008). There is a growing body of research suggesting that some such pathways are shared by major psychologic disorders such as depression and anxiety, opening new avenues in co-treatment strategies. In particular, besides anticonvulsants, which are today used as analgesics, other psychopharmaceuticals, such as the tricyclic antidepressants, are displaying efficacy in the treatment of neuropathic and nociceptive chronic pain. The state of the art regarding the mechanisms of nociception and the pharmacology of both the neurotransmitters involved and the wide range of psychoactive compounds that may be useful in the treatment of chronic pain are discussed.
Collapse
|
14
|
Abstract
There are currently no approved disease-modifying therapies for diabetic neuropathy, and there are only 3 US Food and Drug Administration-approved therapies (pregabalin, duloxetine, and tapentadol) for painful diabetic neuropathy. They each have moderate efficacy with adverse effects limiting optimal dose titration. There is a considerable need for new therapies for the management of painful diabetic neuropathy. We reviewed the potential role of mirogabalin, which like gabapentin and pregabalin modulates the alpha-2/delta-1 subunit of the voltage-gated calcium channel, allowing the influx of calcium and release of neurotransmitters at the synaptic cleft in the central nervous system and spinal cord. It has shown efficacy and good tolerability in a Phase II study in diabetic painful neuropathy and based on the results of two Phase III clinical trials in diabetic painful neuropathy and post-herpetic neuralgia, Daiichi Sankyo submitted a marketing application for neuropathic pain in Japan in February 2018. We have also reviewed potential new therapies, currently in Phase II clinical trials that may modify disease and/or relieve neuropathic pain through novel modes of action.
Collapse
Affiliation(s)
- Saad Javed
- Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK, .,Manchester University Hospital, Manchester, UK,
| | - Uazman Alam
- Diabetes and endocrinology Research, Department of eye and vision Sciences and Pain Research institute, institute of Ageing and Chronic Disease, University of Liverpool and Aintree University Hospital NHS Foundation Trust, Liverpool, UK.,Department of Diabetes and endocrinology, Royal Liverpool and Broadgreen University NHS Hospital Trust, Liverpool, UK.,Division of endocrinology, Diabetes and Gastroenterology, University of Manchester, Manchester, UK
| | - Rayaz A Malik
- Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK, .,Manchester University Hospital, Manchester, UK, .,Department of Medicine, Weill Cornell Medicine-Qatar, Doha, Qatar,
| |
Collapse
|
15
|
Dewanjee S, Das S, Das AK, Bhattacharjee N, Dihingia A, Dua TK, Kalita J, Manna P. Molecular mechanism of diabetic neuropathy and its pharmacotherapeutic targets. Eur J Pharmacol 2018; 833:472-523. [DOI: 10.1016/j.ejphar.2018.06.034] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 06/15/2018] [Accepted: 06/26/2018] [Indexed: 02/07/2023]
|
16
|
Prasanthi G, Prasad K, Bharathi K. Synthesis, evaluation, and molecular properties prediction of substituted cinnamoylpiperazine derivatives as potential antinociceptive and anticonvulsive agents. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2175-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
17
|
Iqbal Z, Azmi S, Yadav R, Ferdousi M, Kumar M, Cuthbertson DJ, Lim J, Malik RA, Alam U. Diabetic Peripheral Neuropathy: Epidemiology, Diagnosis, and Pharmacotherapy. Clin Ther 2018; 40:828-849. [PMID: 29709457 DOI: 10.1016/j.clinthera.2018.04.001] [Citation(s) in RCA: 240] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 03/26/2018] [Accepted: 04/02/2018] [Indexed: 12/18/2022]
Abstract
PURPOSE Diabetic peripheral neuropathy (DPN) is the commonest cause of neuropathy worldwide, and its prevalence increases with the duration of diabetes. It affects approximately half of patients with diabetes. DPN is symmetric and predominantly sensory, starting distally and gradually spreading proximally in a glove-and-stocking distribution. It causes substantial morbidity and is associated with increased mortality. The unrelenting nature of pain in this condition can negatively affect a patient's sleep, mood, and functionality and result in a poor quality of life. The purpose of this review was to critically review the current literature on the diagnosis and treatment of DPN, with a focus on the treatment of neuropathic pain in DPN. METHODS A comprehensive literature review was undertaken, incorporating article searches in electronic databases (EMBASE, PubMed, OVID) and reference lists of relevant articles with the authors' expertise in DPN. This review considers seminal and novel research in epidemiology; diagnosis, especially in relation to novel surrogate end points; and the treatment of neuropathic pain in DPN. We also consider potential new pharmacotherapies for painful DPN. FINDINGS DPN is often misdiagnosed and inadequately treated. Other than improving glycemic control, there is no licensed pathogenetic treatment for diabetic neuropathy. Management of painful DPN remains challenging due to difficulties in personalizing therapy and ascertaining the best dosing strategy, choice of initial pharmacotherapy, consideration of combination therapy, and deciding on defining treatment for poor analgesic responders. Duloxetine and pregabalin remain first-line therapy for neuropathic pain in DPN in all 5 of the major published guidelines by the American Association of Clinical Endocrinologists, American Academy of Neurology, European Federation of Neurological Societies, National Institute of Clinical Excellence (United Kingdom), and the American Diabetes Association, and their use has been approved by the US Food and Drug Administration. IMPLICATIONS Clinical recognition of DPN is imperative for allowing timely symptom management to reduce the morbidity associated with this condition.
Collapse
Affiliation(s)
- Zohaib Iqbal
- Department of Endocrinology, Pennine Acute Hospitals NHS Trust, Greater Manchester, United Kingdom
| | - Shazli Azmi
- Institute of Cardiovascular Science, University of Manchester and the Manchester Royal Infirmary, Central Manchester Hospital Foundation Trust, Manchester, United Kingdom
| | - Rahul Yadav
- Department of Endocrinology, Warrington and Halton Hospitals NHS Foundation Trust, Warrington, United Kingdom
| | - Maryam Ferdousi
- Institute of Cardiovascular Science, University of Manchester and the Manchester Royal Infirmary, Central Manchester Hospital Foundation Trust, Manchester, United Kingdom
| | - Mohit Kumar
- Department of Endocrinology, Wrightington, Wigan and Leigh NHS Foundation Trust, Wigan, United Kingdom
| | - Daniel J Cuthbertson
- Diabetes and Endocrinology Research, Department of Eye and Vision Sciences and Pain Research Institute, Institute of Ageing and Chronic Disease, University of Liverpool and Aintree University Hospital NHS Foundation Trust, Liverpool, United Kingdom
| | - Jonathan Lim
- Diabetes and Endocrinology Research, Department of Eye and Vision Sciences and Pain Research Institute, Institute of Ageing and Chronic Disease, University of Liverpool and Aintree University Hospital NHS Foundation Trust, Liverpool, United Kingdom
| | - Rayaz A Malik
- Institute of Cardiovascular Science, University of Manchester and the Manchester Royal Infirmary, Central Manchester Hospital Foundation Trust, Manchester, United Kingdom; Weill Cornell Medicine-Qatar, Doha, Qatar
| | - Uazman Alam
- Diabetes and Endocrinology Research, Department of Eye and Vision Sciences and Pain Research Institute, Institute of Ageing and Chronic Disease, University of Liverpool and Aintree University Hospital NHS Foundation Trust, Liverpool, United Kingdom; Department of Diabetes and Endocrinology, Royal Liverpool and Broadgreen University NHS Hospital Trust, Liverpool, United Kingdom; Division of Endocrinology, Diabetes and Gastroenterology, University of Manchester, Manchester, United Kingdom.
| |
Collapse
|
18
|
Nicol AL, Hurley RW, Benzon HT. Alternatives to Opioids in the Pharmacologic Management of Chronic Pain Syndromes: A Narrative Review of Randomized, Controlled, and Blinded Clinical Trials. Anesth Analg 2017; 125:1682-1703. [PMID: 29049114 DOI: 10.1213/ane.0000000000002426] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Chronic pain exerts a tremendous burden on individuals and societies. If one views chronic pain as a single disease entity, then it is the most common and costly medical condition. At present, medical professionals who treat patients in chronic pain are recommended to provide comprehensive and multidisciplinary treatments, which may include pharmacotherapy. Many providers use nonopioid medications to treat chronic pain; however, for some patients, opioid analgesics are the exclusive treatment of chronic pain. However, there is currently an epidemic of opioid use in the United States, and recent guidelines from the Centers for Disease Control (CDC) have recommended that the use of opioids for nonmalignant chronic pain be used only in certain circumstances. The goal of this review was to report the current body of evidence-based medicine gained from prospective, randomized-controlled, blinded studies on the use of nonopioid analgesics for the most common noncancer chronic pain conditions. A total of 9566 studies were obtained during literature searches, and 271 of these met inclusion for this review. Overall, while many nonopioid analgesics have been found to be effective in reducing pain for many chronic pain conditions, it is evident that the number of high-quality studies is lacking, and the effect sizes noted in many studies are not considered to be clinically significant despite statistical significance. More research is needed to determine effective and mechanism-based treatments for the chronic pain syndromes discussed in this review. Utilization of rigorous and homogeneous research methodology would likely allow for better consistency and reproducibility, which is of utmost importance in guiding evidence-based care.
Collapse
Affiliation(s)
- Andrea L Nicol
- From the *Department of Anesthesiology, University of Kansas School of Medicine, Kansas City, Kansas; †Department of Anesthesiology, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina; and ‡Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | | | | |
Collapse
|
19
|
Corbett CF. Practical Management of Patients With Painful Diabetic Neuropathy. DIABETES EDUCATOR 2016; 31:523-4, 526-8, 530 passim. [PMID: 16100329 DOI: 10.1177/0145721705278800] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Purpose Painful diabetic neuropathy (PDN) has a significant impact on patients’ quality of life, affecting sleep, mood, mobility, ability to work, interpersonal relationships, overall self-worth, and independence. The purpose of this article is to provide diabetes educators with current and essential tools for PDN assessment and management. Methods Medline and CINAHL database searches identified publications on the assessment and treatment of PDN. Identified research was evaluated, and information pertinent to diabetes educators was summarized. Results Recent advancements in assessment of neuropathic pain include identifying characteristics that distinguish between neuropathic and nonneuropathic pain. In the absence of treatment, research demonstrates that nerve damage may progress while pain diminishes. Many disease-modifying and symptom-management treatment options are available. Conclusion Good glycemic control is the first priority for both prevention and management of PDN. However, even with good glycemic control, up to 20% of patients will develop PDN. PDN recognition and assessment are critical to optimize management. Although several treatment modalities are available, few patients obtain complete pain relief. Recent advances in understanding the mechanisms underlying neuropathic pain should lead to better treatment and patient outcomes. Combination therapy, including nonpharmacologic modalities, may be required. Research evaluating the efficacy of combination therapy is needed.
Collapse
Affiliation(s)
- Cynthia F Corbett
- Intercollegiate College of Nursing, Washington State University, 2917 West Fort George Wright Drive, Spokane, Washington 99224, USA.
| |
Collapse
|
20
|
Gómez-Pérez FJ, Perez-Monteverde A, Nascimento O, Aschner P, Tagle M, Fichtner K, Subbiah P, Mutisya EM, Parsons B. Gabapentin for the treatment of painful diabetic neuropathy: dosing to achieve optimal clinical response. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/14746514040040030601] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective To determine whether gabapentin titrated to achieve clinical effect (≥ 50% reduction in pain; 900—3,600 mg/day) provides superior efficacy to a commonly prescribed fixed-dose (900 mg/day) in subjects with PDN. Methods In Latin America, an open-label trial randomised 339 subjects with PDN to gabapentin, 900 mg/day, for seven weeks (n=170), or to 900—3,600 mg/day titrated over four weeks to achieve clinical effect, followed by three weeks at stable dose (n=169). Results Gabapentin produced a significantly greater reduction in final weekly mean pain scores from baseline when titrated to clinical effect than when administered as a fixed-dose regimen (53.6% vs. 43.3%; p=0.009). Responder rate was significantly increased (64.5% vs. 47.5%; p=0.002), mean VAS scores significantly decreased, final weekly sleep interference scores significantly decreased (57% C vs. 37.2%; p=0.013), and trends favouring improvement in global functioning and QOL were seen in the titration to clinical effect group (p<0.001). Both regimens were well-tolerated. Conclusions Titration to clinical effect offered superior efficacy in treating PDN compared to a low fixed-dose treatment. Br J Diabetes Vasc Dis 2004;4:173—8
Collapse
|
21
|
Abstract
Recognizing that electrically stimulating the motor cortex could relieve chronic pain sparked development of noninvasive technologies. In transcranial magnetic stimulation (TMS), electromagnetic coils held against the scalp influence underlying cortical firing. Multiday repetitive transcranial magnetic stimulation (rTMS) can induce long-lasting, potentially therapeutic brain plasticity. Nearby ferromagnetic or electronic implants are contraindications. Adverse effects are minimal, primarily headaches. Single provoked seizures are very rare. Transcranial magnetic stimulation devices are marketed for depression and migraine in the United States and for various indications elsewhere. Although multiple studies report that high-frequency rTMS of the motor cortex reduces neuropathic pain, their quality has been insufficient to support Food and Drug Administration application. Harvard's Radcliffe Institute therefore sponsored a workshop to solicit advice from experts in TMS, pain research, and clinical trials. They recommended that researchers standardize and document all TMS parameters and improve strategies for sham and double blinding. Subjects should have common well-characterized pain conditions amenable to motor cortex rTMS and studies should be adequately powered. They recommended standardized assessment tools (eg, NIH's PROMIS) plus validated condition-specific instruments and consensus-recommended metrics (eg, IMMPACT). Outcomes should include pain intensity and qualities, patient and clinician impression of change, and proportions achieving 30% and 50% pain relief. Secondary outcomes could include function, mood, sleep, and/or quality of life. Minimum required elements include sample sources, sizes, and demographics, recruitment methods, inclusion and exclusion criteria, baseline and posttreatment means and SD, adverse effects, safety concerns, discontinuations, and medication-usage records. Outcomes should be monitored for at least 3 months after initiation with prespecified statistical analyses. Multigroup collaborations or registry studies may be needed for pivotal trials.
Collapse
|
22
|
Abstract
Traumatic nerve injuries can be devastating and life-changing events, leading to functional morbidity and psychological stress and social constraints. Even in the event of a successful surgical repair with recovered motor function, pain can result in continued disability and poor quality of life. Pain after nerve injury can also prevent recovery and return to preinjury life. It is difficult to predict which patients will develop persistent pain; once incurred, pain can be even challenging to manage. This review seeks to define the types of pain following peripheral nerve injuries, investigate the pathophysiology and causative factors, and evaluate potential treatment options.
Collapse
Affiliation(s)
- Gabrielle Davis
- Department of Surgery, Palo Alto VA, Suite 400, 770 Welch Road, Palo Alto, CA 94304, USA
| | - Catherine M Curtin
- Department of Surgery, Palo Alto VA, Suite 400, 770 Welch Road, Palo Alto, CA 94304, USA; Division of Plastic Surgery, Stanford University, Suite 400, 770 Welch Road, Palo Alto, CA 94304, USA.
| |
Collapse
|
23
|
Abstract
Diabetic neuropathies are common and their prevalence is rising with the growth in the global prevalence of type 2 diabetes. Several patterns of neuropathy have now been described, with diabetic sensorimotor polyneuropathy (DPN) being the most common. Autonomic neuropathy, entrapment neuropathies including carpal tunnel syndrome and ulnar neuropathy at the elbow pose additional burdens. DPN can be detected in over half of all diabetic subjects and approximately 20% of all patients with DPN also experience neuropathic pain, a complication with major impacts on quality of life. Currently, the only available treatments for DPN are optimal glucose control and pain management, whereas interventions, beyond optimizing hyperglycemic control, to address the underlying polyneuropathy are not available. Here we review current treatment options and new literature relating to DPN, with an emphasis on novel and emerging treatments.
Collapse
Affiliation(s)
- Dustin Anderson
- a Department of Medicine (Neurology) , University of Alberta , Edmonton , Alberta , Canada
| | - Douglas W Zochodne
- a Department of Medicine (Neurology) , University of Alberta , Edmonton , Alberta , Canada
| |
Collapse
|
24
|
Majithia N, Temkin SM, Ruddy KJ, Beutler AS, Hershman DL, Loprinzi CL. National Cancer Institute-supported chemotherapy-induced peripheral neuropathy trials: outcomes and lessons. Support Care Cancer 2015; 24:1439-47. [PMID: 26686859 DOI: 10.1007/s00520-015-3063-4] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Accepted: 12/14/2015] [Indexed: 12/19/2022]
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) is one of the most common and debilitating complications of cancer treatment. Due to a lack of effective management options for patients with CIPN, the National Cancer Institute (NCI) sponsored a series of trials aimed at both prevention and treatment. A total of 15 such studies were approved, evaluating use of various neuro-modulatory agents which have shown benefit in other neuropathic pain states. Aside from duloxetine, none of the pharmacologic methods demonstrated therapeutic benefit for patients with CIPN. Despite these disappointing results, the series of trials revealed important lessons that have informed subsequent work. Some examples of this include the use of patient-reported symptom metrics, the elimination of traditional--yet unsubstantiated--practice approaches, and the discovery of molecular genetic predictors of neuropathy. Current inquiry is being guided by the results from these large-scale trials, and as such, stands better chance of identifying durable solutions for this treatment-limiting toxicity.
Collapse
Affiliation(s)
- Neil Majithia
- Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
| | - Sarah M Temkin
- Community Oncology and Prevention Trials Research Group, Division of Cancer Prevention, National Cancer Institute, 9609 Medical Center Drive, Bethesda, MD, 20892, USA
| | - Kathryn J Ruddy
- Department of Medical Oncology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Andreas S Beutler
- Department of Medical Oncology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Dawn L Hershman
- Department of Medicine, Department of Epidemiology, Mailman School of Public Health, Columbia University College of Physicians and Surgeons, Herbert Irving Comprehensive Cancer Center, Columbia University, Columbia University College of Physicians and Surgeons, New York Presbyterian Hospital, 161 Fort Washington Ave #1068, New York, NY, 10032, USA
| | - Charles L Loprinzi
- Department of Medical Oncology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| |
Collapse
|
25
|
Javed S, Alam U, Malik RA. Treating Diabetic Neuropathy: Present Strategies and Emerging Solutions. Rev Diabet Stud 2015; 12:63-83. [PMID: 26676662 DOI: 10.1900/rds.2015.12.63] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Diabetic peripheral neuropathies (DPN) are a heterogeneous group of disorders caused by neuronal dysfunction in patients with diabetes. They have differing clinical courses, distributions, fiber involvement (large or small), and pathophysiology. These complications are associated with increased morbidity, distress, and healthcare costs. Approximately 50% of patients with diabetes develop peripheral neuropathy, and the projected rise in the global burden of diabetes is spurring an increase in neuropathy. Distal symmetrical polyneuropathy (DSPN) with painful diabetic neuropathy, occurring in around 20% of diabetes patients, and diabetic autonomic neuropathy (DAN) are the most common manifestations of DPN. Optimal glucose control represents the only broadly accepted therapeutic option though evidence of its benefit in type 2 diabetes is unclear. A number of symptomatic treatments are recommended in clinical guidelines for the management of painful DPN, including antidepressants such as amitriptyline and duloxetine, the γ-aminobutyric acid analogues gabapentin and pregabalin, opioids, and topical agents such as capsaicin. However, monotherapy is frequently not effective in achieving complete resolution of pain in DPN. There is a growing need for head-to-head studies of different single-drug and combination pharmacotherapies. Due to the ubiquity of autonomic innervation in the body, DAN causes a plethora of symptoms and signs affecting cardiovascular, urogenital, gastrointestinal, pupillomotor, thermoregulatory, and sudomotor systems. The current treatment of DAN is largely symptomatic, and does not correct the underlying autonomic nerve deficit. A number of novel potential candidates, including erythropoietin analogues, angiotensin II receptor type 2 antagonists, and sodium channel blockers are currently being evaluated in phase II clinical trials.
Collapse
Affiliation(s)
- Saad Javed
- Centre for Endocrinology and Diabetes, Institute of Human Development, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| | - Uazman Alam
- Centre for Endocrinology and Diabetes, Institute of Human Development, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| | - Rayaz A Malik
- Centre for Endocrinology and Diabetes, Institute of Human Development, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| |
Collapse
|
26
|
Abstract
Distal symmetric polyneuropathy (DSPN), the most common form of diabetic neuropathy, has a complex pathophysiology and can be a major source of physical and psychologic disability. The management of DSPN can be frustrating for both patient and physician. This article provides a general overview of typical patient pathways in DSPN, and highlights variations in diagnosis, management, and referral patterns among different providers. DSPN is managed in several settings by primary care physicians (PCPs), specialists, and nurse practitioners. The initial clinical management of the patient is often dependent on the presenting complaint, the referral pattern of the provider, level of comfort of the PCP in managing diabetic complications, and geographic access to specialists. The primary treatment of DSPN focuses mainly on glycemic control and adjustment of modifiable risk factors, but other causes of neuropathy should also be investigated. Several pharmacologic agents are recommended by treatment guidelines, and as DSPN typically exists with comorbid conditions, a multimodal therapeutic approach should be considered. Barriers to effective management include failure to recognize DSPN, and misdiagnosis. Patient education also remains important. Referral patterns vary widely according to geographic location, access to services, provider preferences, and comfort in managing complex aspects of the disease. The variability in patient pathways affects patient education, satisfaction, and outcomes. Standardized screening tools, a multidisciplinary team approach, and treatment algorithms for diabetic neuropathy should improve future care. To improve patient outcomes, DSPN needs to be diagnosed sooner and interventions made before significant nerve damage occurs.
Collapse
Affiliation(s)
- Michelle Kaku
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | |
Collapse
|
27
|
Arakawa A, Kaneko M, Narukawa M. An Investigation of Factors Contributing to Higher Levels of Placebo Response in Clinical Trials in Neuropathic Pain: A Systematic Review and Meta-Analysis. Clin Drug Investig 2015; 35:67-81. [DOI: 10.1007/s40261-014-0259-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
28
|
Javed S, Petropoulos IN, Alam U, Malik RA. Treatment of painful diabetic neuropathy. Ther Adv Chronic Dis 2015; 6:15-28. [PMID: 25553239 DOI: 10.1177/2040622314552071] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Painful diabetic neuropathy (PDN) is a debilitating consequence of diabetes that may be present in as many as one in five patients with diabetes. The objective assessment of PDN is difficult, making it challenging to diagnose and assess in both clinical practice and clinical trials. No single treatment exists to prevent or reverse neuropathic changes or to provide total pain relief. Treatment of PDN is based on three major approaches: intensive glycaemic control and risk factor management, treatments based on pathogenetic mechanisms, and symptomatic pain management. Clinical guidelines recommend pain relief in PDN through the use of antidepressants such as amitriptyline and duloxetine, the γ-aminobutyric acid analogues gabapentin and pregabalin, opioids and topical agents such as capsaicin. Of these medications, duloxetine and pregabalin were approved by the US Food and Drug Administration (FDA) in 2004 and tapentadol extended release was approved in 2012 for the treatment of PDN. Proposed pathogenetic treatments include α-lipoic acid (stems reactive oxygen species formation), benfotiamine (prevents vascular damage in diabetes) and aldose-reductase inhibitors (reduces flux through the polyol pathway). There is a growing need for studies to evaluate the most potent drugs or combinations for the management of PDN to maximize pain relief and improve quality of life. A number of agents are potential candidates for future use in PDN therapy, including Nav 1.7 antagonists, N-type calcium channel blockers, NGF antibodies and angiotensin II type 2 receptor antagonists.
Collapse
Affiliation(s)
- Saad Javed
- Centre for Endocrinology and Diabetes, University of Manchester, Core Technology Facility (3rd floor), 46 Grafton Street, Manchester, M13 9NT, UK
| | - Ioannis N Petropoulos
- School of Medicine, Institute of Human Development, Centre for Endocrinology and Diabetes, Manchester, UK
| | - Uazman Alam
- School of Medicine, Institute of Human Development, Centre for Endocrinology and Diabetes, and Central Manchester NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Rayaz A Malik
- School of Medicine, Institute of Human Development, Centre for Endocrinology and Diabetes, Central Manchester NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK, and Weill Cornell Medical College, Qatar
| |
Collapse
|
29
|
Pachman DR, Watson JC, Lustberg MB, Wagner-Johnston ND, Chan A, Broadfield L, Cheung YT, Steer C, Storey DJ, Chandwani KD, Paice J, Jean-Pierre P, Oh J, Kamath J, Fallon M, Strik H, Koeppen S, Loprinzi CL. Management options for established chemotherapy-induced peripheral neuropathy. Support Care Cancer 2014; 22:2281-95. [PMID: 24879391 DOI: 10.1007/s00520-014-2289-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 05/12/2014] [Indexed: 12/16/2022]
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) is a common and debilitating condition associated with a variety of chemotherapeutic agents. Clinicians are cognizant of the negative impact of CIPN on cancer treatment outcomes and patients' psychosocial functioning and quality of life. In an attempt to alleviate this problem, clinicians and patients try various therapeutic interventions, despite limited evidence to support efficacy of these treatments. The rationale for such use is mostly based on the evidence for the treatment options in non-CIPN peripheral neuropathy syndromes, as this area is more robustly studied than is CIPN treatment. In this manuscript, we examine the existing evidence for both CIPN and non-CIPN treatments and develop a summary of the best available evidence with the aim of developing a practical approach to the treatment of CIPN, based on available literature and clinical practice experience.
Collapse
Affiliation(s)
- Deirdre R Pachman
- Division of Medical Oncology, Mayo Clinic, 200 First Street, SW, Rochester, MN, 55905, USA,
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Kasznicki J. Advances in the diagnosis and management of diabetic distal symmetric polyneuropathy. Arch Med Sci 2014; 10:345-54. [PMID: 24904671 PMCID: PMC4042056 DOI: 10.5114/aoms.2014.42588] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 03/24/2013] [Accepted: 04/14/2013] [Indexed: 11/17/2022] Open
Abstract
Distal symmetric polyneuropathy (DSPN) is the most common chronic complication of diabetes mellitus. The pathogenesis of DSPN is not fully elucidated, but it is certainly multifactorial in nature and attributable to metabolic and microvessel disorders related to chronic hyperglycemia, diabetes duration, and several cardiovascular risk factors. Early diagnosis and appropriate management are extremely important, since up to 50% of DSPN cases may be asymptomatic, and patients are unaware of foot injury leading to foot ulcers and amputation. Simple, validated tests such as the Neuropathy Disability Score and/or Vibration Perception Threshold may be used to diagnose DSPN. Similarly, neurological dysfunction screening questionnaires should be used to assess the quality and severity of DSPN symptoms. Using both methods enables prediction of the prognosis of diabetic patients with DSPN. No causative treatment of DSPN is known, but the results of clinical trials indicate that several treatment options are highly effective in symptomatic treatment of painful DSPN. The appropriate treatment of DSPN may improve the outcome, preventing or delaying the development of numerous diabetic complications.
Collapse
Affiliation(s)
- Jacek Kasznicki
- Department of Internal Medicine, Diabetology and Clinical Pharmacology, Medical University of Lodz, Poland
| |
Collapse
|
31
|
Hayes AG, Arendt-Nielsen L, Tate S. Multiple mechanisms have been tested in pain—how can we improve the chances of success? Curr Opin Pharmacol 2014; 14:11-7. [DOI: 10.1016/j.coph.2013.09.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 09/19/2013] [Accepted: 09/22/2013] [Indexed: 10/26/2022]
|
32
|
Diabetic peripheral neuropathy: Current perspective and future directions. Pharmacol Res 2014; 80:21-35. [DOI: 10.1016/j.phrs.2013.12.005] [Citation(s) in RCA: 201] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 11/26/2013] [Accepted: 12/16/2013] [Indexed: 01/17/2023]
|
33
|
Malik S, Arif H, Hirsch LJ. Lamotrigine and its applications in the treatment of epilepsy and other neurological and psychiatric disorders. Expert Rev Neurother 2014; 6:1609-27. [PMID: 17144777 DOI: 10.1586/14737175.6.11.1609] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Lamotrigine is a broad-spectrum antiepileptic drug, initially approved in 1994 for the adjunctive treatment of partial seizures in adults and for the generalized seizures of Lennox-Gastaut syndrome in pediatric (>2 years old) and adult populations. Its role in the treatment of bipolar disorder type I has also been well established. In addition, lamotrigine has been successfully used for the management of other neurological conditions such as migraines and neuropathic pain, and preliminary data show promising results. It has favorable pharmacokinetic properties and is generally well tolerated. The small risk of serious skin rash can be minimized with slow titration of the drug and dose adjustment with concomitant medications. Lamotrigine has demonstrated particular benefit in the treatment of women and elderly patients with epilepsy.
Collapse
Affiliation(s)
- Sheetal Malik
- Comprehensive Epilepsy Center, Columbia University Neurological Institute, Box NI-135, 710 West 168th Street, 7th Floor, New York, NY 10032, USA.
| | | | | |
Collapse
|
34
|
Calabek B, Callaghan B, Feldman EL. Therapy for diabetic neuropathy: an overview. HANDBOOK OF CLINICAL NEUROLOGY 2014; 126:317-333. [PMID: 25410231 DOI: 10.1016/b978-0-444-53480-4.00022-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Neuropathy is a highly prevalent complication of diabetes that is only likely to increase as the diabetic epidemic continues. Unfortunately, the only disease-modifying treatment is to address the underlying diabetes with enhanced glucose control. In patients with type 1 diabetes, improved glycemic control dramatically reduces the incidence of neuropathy. In contrast, in patients with type 2 diabetes, better glucose control has only a marginal effect on the prevention of neuropathy. However, recognition and treatment of neuropathic pain is also important. An ever expanding number of randomized, controlled clinical trials support multiple medications for the reduction of pain. This includes medications such as calcium channel agonists, tricyclic antidepressants, and selective serotonin/norepinephrine reuptake inhibitors. However, the precise order and combination of these medications remains unclear. Furthermore, several new promising medications are being developed. Overall, the cornerstones of the treatment of diabetic neuropathy are improved glycemic control and initiation of a neuropathic pain medication with high levels of evidence to support its use when pain is present.
Collapse
Affiliation(s)
| | - Brian Callaghan
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| | - Eva L Feldman
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| |
Collapse
|
35
|
Abstract
BACKGROUND This is an update of the original Cochrane review entitled Lamotrigine for acute and chronic pain published in Issue 2, 2007, and updated in Issue 2, 2011. Some antiepileptic medicines have a place in the treatment of neuropathic pain (pain due to nerve damage). This updated review adds no new additional studies looking at evidence for lamotrigine as an effective treatment for chronic neuropathic pain or fibromyalgia. The update uses higher standards of evidence than previously. OBJECTIVES To assess the analgesic efficacy of lamotrigine in the treatment of chronic neuropathic pain and fibromyalgia, and to evaluate adverse effects reported in the studies. SEARCH METHODS We identified randomised controlled trials (RCTs) of lamotrigine for chronic neuropathic pain and fibromyalgia (including cancer pain) from MEDLINE, EMBASE and the Cochrane Central Register of Controlled Trials (CENTRAL). We ran searches for the original review in 2006, in 2011 for the first update, and subsequent searches in August 2013 for this update. We sought additional studies from the reference lists of the retrieved papers. The original review and first update included acute pain, but no acute pain studies were identified. SELECTION CRITERIA RCTs investigating the use of lamotrigine (any dose, by any route, and for any study duration) for the treatment of chronic neuropathic pain or fibromyalgia. Assessment of pain intensity or pain relief, or both, using validated scales. Participants were adults aged 18 and over. We included only full journal publication articles. DATA COLLECTION AND ANALYSIS Two review authors independently extracted efficacy and adverse event data, and examined issues of study quality. We performed analysis using three tiers of evidence. The first tier used data where studies reported the outcome of at least 50% pain reduction from baseline, lasted at least eight weeks, had a parallel group design, included 200 or more participants in the comparison, and reported an intention-to-treat analysis. First-tier studies did not use last observation carried forward (LOCF) or other imputational methods for dropouts. The second tier used data that failed to meet this standard and second-tier results were therefore subject to potential bias. MAIN RESULTS Twelve included studies in 11 publications (1511 participants), all with chronic neuropathic pain: central post-stroke pain (1), chemotherapy-induced neuropathic pain (1), diabetic neuropathy (4), HIV-related neuropathy (2), mixed neuropathic pain (2), spinal cord injury-related pain (1), and trigeminal neuralgia (1). We did not identify any additional studies. Participants were aged between 26 and 77 years. Study duration was two weeks in one study and at least six weeks in the remainder; eight were of eight-week duration or longer.No study provided first-tier evidence for an efficacy outcome. There was no convincing evidence that lamotrigine is effective in treating neuropathic pain and fibromyalgia at doses of 200 mg to 400 mg daily. Almost 10% of participants taking lamotrigine reported a skin rash. AUTHORS' CONCLUSIONS Large, high-quality, long-duration studies reporting clinically useful levels of pain relief for individual participants provided no convincing evidence that lamotrigine is effective in treating neuropathic pain and fibromyalgia at doses of about 200 to 400 mg daily. Given the availability of more effective treatments including antiepileptics and antidepressant medicines, lamotrigine does not have a significant place in therapy based on the available evidence. The adverse effect profile of lamotrigine is also of concern.
Collapse
|
36
|
Iyer S, Tanenberg RJ. Pharmacologic management of diabetic peripheral neuropathic pain. Expert Opin Pharmacother 2013; 14:1765-75. [PMID: 23800105 DOI: 10.1517/14656566.2013.811490] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Diabetic peripheral neuropathic pain (DPNP) is a debilitating and distressing complication that occurs in patients with diabetes mellitus. This article provides an overview of diabetic peripheral neuropathy focusing on DPNP. AREAS COVERED This article reviews the diagnosis, pathogenesis, prevention and treatment of diabetic neuropathy and neuropathic pain. A comprehensive and systematic Medline search of the published literature for treatment of diabetic peripheral neuropathy was done from 1965 to December 2012. Studies not in English language were excluded. EXPERT OPINION Neuropathic pain is difficult to treat, and patients rarely experience complete pain relief. Despite several pharmacological agents being used in the treatment of DPNP, only duloxetine and pregabalin have evidence-based support for controlling DPNP.
Collapse
Affiliation(s)
- Shridhar Iyer
- Albany Medical College, Department of Internal Medicine, Albany, NY, USA
| | | |
Collapse
|
37
|
Rustagi A, Roychoudhury A, Bhutia O, Trikha A, Srivastava MVP. Lamotrigine Versus Pregabalin in the Management of Refractory Trigeminal Neuralgia: A Randomized Open Label Crossover Trial. J Maxillofac Oral Surg 2013. [PMID: 26225004 DOI: 10.1007/s12663-013-0513-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Carbamazepine (CBZ) formed the gold standard drug in trigeminal neuralgia (TN) treatment but faces high therapeutic failure. This defined the need to explore a second line of drug therapy. The study aimed at comparing two alternate drugs i.e. Lamotrigine (LTG) and Pregabalin (PGB), in the management of TN refractory to therapeutic doses of CBZ. METHODS Twenty-two patients with diagnosis of refractory TN were enrolled and randomly allotted into 2 groups of 11 each. Each group was subjected to a crossover analysis using LTG and PGB together with CBZ, for a period of 6 weeks. Patients maintained a pain diary, the scores of which, along with global evaluation scores, determined the primary outcome. Reevaluation of symptoms after 6 months was done to assess long term efficacy with study drugs. RESULTS Both LTG and PGB were effective over CBZ alone (p < 0.05); however, statistically insignificant difference (p > 0.05) was observed between the two groups using Mann-Whitney tests. Unlike LTG, side effects like nausea, insomnia and concentration loss were minimal with PGB thus exhibiting greater patient compliance. Secondary analysis showed complete relief in 4 patients on PGB (mean dose 240.68 mg/day) while 6 had partial relief. Three patients on LTG (mean dose 310.90 mg/day) reported relapse of acute symptoms and required peripheral alcohol blocks. CONCLUSION Pregabalin has potential anti-neuralgia properties comparable to LTG. However, the level of patient's tolerance seen with PGB exceeds that with LTG. 6 months follow-up records suggest that PGB together with CBZ offers a more reliable pain control than with LTG.
Collapse
Affiliation(s)
- Ankur Rustagi
- Department of Oral and Maxillofacial Surgery, CN Center, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - Ajoy Roychoudhury
- Department of Oral and Maxillofacial Surgery, CN Center, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - Ongkila Bhutia
- Department of Oral and Maxillofacial Surgery, CN Center, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - Anjan Trikha
- Department of Anaesthesia, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - M V Padma Srivastava
- Department of Neurology, CN Center, All India Institute of Medical Sciences, New Delhi, 110029 India
| |
Collapse
|
38
|
Diabetic neuropathy and oxidative stress: therapeutic perspectives. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:168039. [PMID: 23738033 PMCID: PMC3655656 DOI: 10.1155/2013/168039] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Revised: 02/22/2013] [Accepted: 03/18/2013] [Indexed: 12/15/2022]
Abstract
Diabetic neuropathy (DN) is a widespread disabling disorder comprising peripheral nerves' damage. DN develops on a background of hyperglycemia and an entangled metabolic imbalance, mainly oxidative stress. The majority of related pathways like polyol, advanced glycation end products, poly-ADP-ribose polymerase, hexosamine, and protein kinase c all originated from initial oxidative stress. To date, no absolute cure for DN has been defined; although some drugs are conventionally used, much more can be found if all pathophysiological links with oxidative stress would be taken into account. In this paper, although current therapies for DN have been reviewed, we have mainly focused on the links between DN and oxidative stress and therapies on the horizon, such as inhibitors of protein kinase C, aldose reductase, and advanced glycation. With reference to oxidative stress and the related pathways, the following new drugs are under study such as taurine, acetyl-L-carnitine, alpha lipoic acid, protein kinase C inhibitor (ruboxistaurin), aldose reductase inhibitors (fidarestat, epalrestat, ranirestat), advanced glycation end product inhibitors (benfotiamine, aspirin, aminoguanidine), the hexosamine pathway inhibitor (benfotiamine), inhibitor of poly ADP-ribose polymerase (nicotinamide), and angiotensin-converting enzyme inhibitor (trandolapril). The development of modern drugs to treat DN is a real challenge and needs intensive long-term comparative trials.
Collapse
|
39
|
Snedecor SJ, Sudharshan L, Cappelleri JC, Sadosky A, Mehta S, Botteman M. Systematic review and meta-analysis of pharmacological therapies for painful diabetic peripheral neuropathy. Pain Pract 2013; 14:167-84. [PMID: 23534696 DOI: 10.1111/papr.12054] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 02/08/2013] [Accepted: 02/08/2013] [Indexed: 12/11/2022]
Abstract
BACKGROUND Painful diabetic peripheral neuropathy (pDPN) is prevalent among persons with diabetes and increases over time. Published guidelines recommend a number of medications to treat this condition providing clinicians with a variety of treatment options. This study provides a comprehensive systematic review and meta-analysis of published pharmacologic therapies for pDPN. METHODS The published literature was systematically searched to identify randomized, controlled trials of all available pharmacologic treatments for pDPN (recommended or nonrecommended) reporting predefined efficacy and safety outcomes. Bayesian fixed-effect mixed treatment comparison methods were used to assess relative therapeutic efficacy and harms. RESULTS Data from 58 studies including 29 interventions and 11,883 patients were analyzed. Pain reduction over that of placebo on the 11-point numeric rating scale ranged from -3.29 for sodium valproate (95% credible interval [CrI] = [-4.21, -2.36]) to 1.67 for Sativex (-0.47, 0.60). Estimates for most treatments were clustered between 0 and -1.5 and were associated with more study data and smaller CrIs. Pregabalin (≥ 300 mg/day) was the most effective on the 100-point visual analog scale (-21.88; [-27.06, -16.68]); topiramate was the least (-3.09; [-3.99, -2.18]). Relative risks (RRs) of 30% pain reduction ranged from 0.78 (Sativex) to 1.84 (lidocaine 5% plaster). Analysis of the RR ratio of these 2 treatments reveals marginal significance for Sativex (3.27; [1.07, 9.81]), indicating the best treatment is only slightly better than the worst. Relative risks of 50% pain reduction ranged from 0.98 (0.56, 1.52) (amitriptyline) to 2.25 (1.51, 3.00) (alpha-lipoic acid). RR ratio for these treatments was not statistically different (3.39; [0.88, 3.34]). Fluoxetine had the lowest risk of adverse events (0.94; [0.62, 1.23]); oxycodone had the highest (1.55; [1.45, 1.64]). Discontinuation RRs were clustered around 0.8 to 1.5, with those on the extreme having greater uncertainty. CONCLUSIONS Selecting an appropriate pDPN therapy is key given the large number of available treatments. Comparative results revealed relative equivalence among many of the studied interventions having the largest overall sample sizes and highlight the importance of standardization of methods to effectively assess pain.
Collapse
|
40
|
Abstract
Neuropathic pain management is an important aspect in the management of painful peripheral neuropathy. Anticonvulsants and antidepressants have been studied extensively and are often used as first-line agents in the management of neuropathic pain. In this article, data from multiple randomized controlled studies on painful peripheral neuropathies are summarized to guide physicians in treating neuropathic pain. Treatment is a challenge given the diverse mechanisms of pain and variable responses in individuals. However, most patients derive pain relief from a well-chosen monotherapy or well-designed polypharmacy that combines agents with different mechanisms of action.
Collapse
Affiliation(s)
- Jaya R Trivedi
- Department of Neurology & Neurotherapeutics, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA.
| | | | | |
Collapse
|
41
|
Vinik AI, Casellini CM. Guidelines in the management of diabetic nerve pain: clinical utility of pregabalin. Diabetes Metab Syndr Obes 2013; 6:57-78. [PMID: 23467255 PMCID: PMC3587397 DOI: 10.2147/dmso.s24825] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Diabetic peripheral neuropathy is a common complication of diabetes. It presents as a variety of syndromes for which there is no universally accepted unique classification. Sensorimotor polyneuropathy is the most common type, affecting about 30% of diabetic patients in hospital care and 25% of those in the community. Pain is the reason for 40% of patient visits in a primary care setting, and about 20% of these have had pain for greater than 6 months. Chronic pain may be nociceptive, which occurs as a result of disease or damage to tissue with no abnormality in the nervous system. In contrast, neuropathic pain is defined as "pain arising as a direct consequence of a lesion or disease affecting the somatosensory system." Persistent neuropathic pain interferes significantly with quality of life, impairing sleep and recreation; it also significantly impacts emotional well-being, and is associated with depression, anxiety, and noncompliance with treatment. Painful diabetic peripheral neuropathy is a difficult-to-manage clinical problem, and patients with this condition are more apt to seek medical attention than those with other types of diabetic neuropathy. Early recognition of psychological problems is critical to the management of pain, and physicians need to go beyond the management of pain per se if they are to achieve success. This evidence-based review of the assessment of the patient with pain in diabetes addresses the state-of-the-art management of pain, recognizing all the conditions that produce pain in diabetes and the evidence in support of a variety of treatments currently available. A search of the full Medline database for the last 10 years was conducted in August 2012 using the terms painful diabetic peripheral neuropathy, painful diabetic peripheral polyneuropathy, painful diabetic neuropathy and pain in diabetes. In addition, recent reviews addressing this issue were adopted as necessary. In particular, reports from the American Academy of Neurology and the Toronto Consensus Panel on Diabetic Neuropathy were included. Unfortunately, the results of evidence-based studies do not necessarily take into account the presence of comorbidities, the cost of treatment, or the role of third-party payers in decision-making. Thus, this review attempts to give a more balanced view of the management of pain in the diabetic patient with neuropathy and in particular the role of pregabalin.
Collapse
Affiliation(s)
- Aaron I Vinik
- Correspondence: Aaron I Vinik, Research and Neuroendocrine Unit, Strelitz Diabetes Center for Endocrine and Metabolic Disorders and Division of Endocrinology and Metabolism, Department of Medicine, Eastern Virginia Medical School, Andrews Hall, 721 Fairfax Avenue, Norfolk, VA 23507, USA, Tel +1 757 446 5912, Fax +1 757 446 5868, Email
| | | |
Collapse
|
42
|
Chopra K, Tiwari V. Alcoholic neuropathy: possible mechanisms and future treatment possibilities. Br J Clin Pharmacol 2012; 73:348-62. [PMID: 21988193 DOI: 10.1111/j.1365-2125.2011.04111.x] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Chronic alcohol consumption produces painful peripheral neuropathy for which there is no reliable successful therapy, mainly due to lack of understanding of its pathobiology. Alcoholic neuropathy involves coasting caused by damage to nerves that results from long term excessive drinking of alcohol and is characterized by spontaneous burning pain, hyperalgesia and allodynia. The mechanism behind alcoholic neuropathy is not well understood, but several explanations have been proposed. These include activation of spinal cord microglia after chronic alcohol consumption, oxidative stress leading to free radical damage to nerves, activation of mGlu5 receptors in the spinal cord and activation of the sympathoadrenal and hypothalamo-pituitary-adrenal (HPA) axis. Nutritional deficiency (especially thiamine deficiency) and/or the direct toxic effect of alcohol or both have also been implicated in alcohol-induced neuropathic pain. Treatment is directed towards halting further damage to the peripheral nerves and restoring their normal functioning. This can be achieved by alcohol abstinence and a nutritionally balanced diet supplemented by all B vitamins. However, in the setting of ongoing alcohol use, vitamin supplementation alone has not been convincingly shown to be sufficient for improvement in most patients. The present review is focused around the multiple pathways involved in the development of peripheral neuropathy associated with chronic alcohol intake and the different therapeutic agents which may find a place in the therapeutic armamentarium for both prevention and management of alcoholic neuropathy.
Collapse
Affiliation(s)
- Kanwaljit Chopra
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, UGC Center of Advanced Study, Panjab University, Chandigarh-160 014, India.
| | | |
Collapse
|
43
|
Abstract
Diabetic peripheral neuropathy is a prevalent, disabling disorder. The most common manifestation is distal symmetrical polyneuropathy (DSP), but many patterns of nerve injury can occur. Currently, the only effective treatments are glucose control and pain management. While glucose control substantially decreases the development of neuropathy in those with type 1 diabetes, the effect is probably much smaller in those with type 2 diabetes. Evidence supports the use of specific anticonvulsants and antidepressants for pain management in patients with diabetic peripheral neuropathy. However, the lack of disease-modifying therapies for diabetic DSP makes the identification of new modifiable risk factors essential. Growing evidence supports an association between components of the metabolic syndrome, including prediabetes, and neuropathy. Studies are needed to further explore this association, which has implications for the development of new treatments for this common disorder.
Collapse
|
44
|
Cepeda MS, Berlin JA, Gao CY, Wiegand F, Wada DR. Placebo Response Changes Depending on the Neuropathic Pain Syndrome: Results of a Systematic Review and Meta-Analysis. PAIN MEDICINE 2012; 13:575-95. [DOI: 10.1111/j.1526-4637.2012.01340.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
45
|
Plan EL, Elshoff JP, Stockis A, Sargentini-Maier ML, Karlsson MO. Likert Pain Score Modeling: A Markov Integer Model and an Autoregressive Continuous Model. Clin Pharmacol Ther 2012; 91:820-8. [DOI: 10.1038/clpt.2011.301] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
46
|
Nickel FT, Seifert F, Lanz S, Maihöfner C. Mechanisms of neuropathic pain. Eur Neuropsychopharmacol 2012; 22:81-91. [PMID: 21672666 DOI: 10.1016/j.euroneuro.2011.05.005] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 04/12/2011] [Accepted: 05/14/2011] [Indexed: 12/14/2022]
Abstract
Neuropathic pain is a disease of global burden. Its symptoms include spontaneous and stimulus-evoked painful sensations. Several maladaptive mechanisms underlying these symptoms have been elucidated in recent years: peripheral sensitization of nociception, abnormal excitability of afferent neurons, central sensitization comprising pronociceptive facilitation, disinhibition of nociception and central reorganization processes, and sympathetically maintained pain. This review aims to illustrate these pathophysiological principles, focussing on molecular and neurophysiological findings. Finally therapeutic options based on these findings are discussed.
Collapse
Affiliation(s)
- Florian T Nickel
- Department of Neurology, University of Erlangen-Nuremberg, Germany
| | | | | | | |
Collapse
|
47
|
Pluijmsl WA, Slangenl R, Joostenl EA, Kesselsl AG, Merkiesl IS, Schaperl NC, Faberl CG, Kleefl M. Review: Electrical spinal cord stimulation in painful diabetic polyneuropathy, a systematic review on treatment efficacy and safety. Eur J Pain 2012; 15:783-8. [DOI: 10.1016/j.ejpain.2011.01.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2010] [Revised: 11/15/2010] [Accepted: 01/24/2011] [Indexed: 01/25/2023]
Affiliation(s)
- Wouter A. Pluijmsl
- Department of Anaesthesiology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Rachel Slangenl
- Department of Anaesthesiology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Elbert A. Joostenl
- Department of Anaesthesiology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Alfons G. Kesselsl
- Department of Clinical Epidemiology and MTA, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Ingemar S.J. Merkiesl
- Department of Neurology, Maastricht University Medical Centre, Maastricht, The Netherlands
- Department of Neurology, Spaarne Hospital, Hoofddorp, The Netherlands
| | - Nico C. Schaperl
- Department of Internal Medicine, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Catharina G. Faberl
- Department of Anaesthesiology, Maastricht University Medical Centre, Maastricht, The Netherlands
- Department of Neurology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Maarten Kleefl
- Department of Anaesthesiology, Maastricht University Medical Centre, Maastricht, The Netherlands
| |
Collapse
|
48
|
Affiliation(s)
- Torbjörn Tomson
- Department of Clinical Neuroscience, Karolinska University Hospital, Stockholm, Sweden.
| | | |
Collapse
|
49
|
Bril V, England J, Franklin GM, Backonja M, Cohen J, Del Toro D, Feldman E, Iverson DJ, Perkins B, Russell JW, Zochodne D. Evidence-based guideline: Treatment of painful diabetic neuropathy: report of the American Academy of Neurology, the American Association of Neuromuscular and Electrodiagnostic Medicine, and the American Academy of Physical Medicine and Rehabilitation. PM R 2011; 3:345-52, 352.e1-21. [PMID: 21497321 DOI: 10.1016/j.pmrj.2011.03.008] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To develop a scientifically sound and clinically relevant evidence-based guideline for the treatment of painful diabetic neuropathy (PDN). METHODS We performed a systematic review of the literature from 1960 to August 2008 and classified the studies according to the American Academy of Neurology classification of evidence scheme for a therapeutic article, and recommendations were linked to the strength of the evidence. The basic question asked was: "What is the efficacy of a given treatment (pharmacological: anticonvulsants, antidepressants, opioids, others; and non-pharmacological: electrical stimulation, magnetic field treatment, low-intensity laser treatment, Reiki massage, others) to reduce pain and improve physical function and quality of life (QOL) in patients with PDN?" RESULTS AND RECOMMENDATIONS Pregabalin is established as effective and should be offered for relief of PDN (Level A). Venlafaxine, duloxetine, amitriptyline, gabapentin, valproate, opioids (morphine sulphate, tramadol, and oxycodone controlled-release), and capsaicin are probably effective and should be considered for treatment of PDN (Level B). Other treatments have less robust evidence or the evidence is negative. Effective treatments for PDN are available, but many have side effects that limit their usefulness, and few studies have sufficient information on treatment effects on function and QOL.
Collapse
|
50
|
Hartemann A, Attal N, Bouhassira D, Dumont I, Gin H, Jeanne S, Said G, Richard JL. Painful diabetic neuropathy: Diagnosis and management. DIABETES & METABOLISM 2011; 37:377-88. [DOI: 10.1016/j.diabet.2011.06.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 06/13/2011] [Indexed: 01/01/2023]
|