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Yvonne Lee pain

Wan-Hung Lee, Li-Li Li, Aarti Chawla, Andy Hudmon, Yvonne Y Lai, Michael J Courtney, Andrea G Hohmann
Elevated N-methyl-D-aspartate receptor (NMDAR) activity is linked to central sensitization and chronic pain. However, NMDAR antagonists display limited therapeutic potential due to their adverse side effects. Novel approaches targeting the NR2B-PSD95-nNOS complex to disrupt signaling pathways downstream of NMDARs show efficacy in preclinical pain models. Here, we evaluated the involvement of interactions between neuronal nitric oxide synthase (nNOS) and the nitric oxide synthase 1 adaptor protein (NOS1AP) in pronociceptive signaling and neuropathic pain...
January 9, 2018: Pain
Yvonne Yan On Lau, Ryan Ka Lok Lee, James Francis Griffith, Carol Lai Yee Chan, Sheung Wai Law, Kin On Kwok
PURPOSE: Weight bearing does alter the dimension of lumbar spinal canal, but no study has analyzed its clinical correlation. This study aims to evaluate whether the changes in dural sac cross-sectional area (DSCA) and sagittal anteroposterior (AP) diameter on standing magnetic resonance imaging (MRI) correlate better with clinical symptoms of lumbar spinal stenosis. METHODS: Seventy consecutive patients with neurogenic claudication were prospectively recruited to undergo a 0...
October 2017: European Spine Journal
Yvonne C Lee, Clifton O Bingham, Robert R Edwards, Wendy Marder, Phillips Kristine, Marcy B Bolster, Daniel J Clauw, Larry W Moreland, Bing Lu, Alyssa Wohlfahrt, Zhi Zhang, Tuhina Neogi
OBJECTIVE: Pain sensitization may contribute to pain severity in rheumatoid arthritis (RA), impacting assessment of disease activity. We examined whether pain processing mechanisms were associated with disease activity among RA patients with active disease. METHODS: This study includes 139 subjects enrolled in the Central Pain in Rheumatoid Arthritis cohort. Subjects underwent quantitative sensory testing (QST), including assessment of pressure pain thresholds (PPTs) at multiple sites, conditioned pain modulation, and temporal summation...
April 24, 2017: Arthritis Care & Research
Lawrence M Carey, Wan-Hung Lee, Tannia Gutierrez, Pushkar M Kulkarni, Ganesh A Thakur, Yvonne Y Lai, Andrea G Hohmann
Excessive activation of NMDA receptor (NMDAR) signaling within the spinal dorsal horn contributes to central sensitization and the induction and maintenance of pathological pain states. However, direct antagonism of NMDARs produces undesirable side effects which limit their clinical use. NMDAR activation produces central sensitization, in part, by initiating a signaling cascade that activates the enzyme neuronal nitric oxide synthase (nNOS) and generates the signaling molecule nitric oxide. NMDAR-mediated activation of nNOS requires a scaffolding protein, postsynaptic density protein 95kDa (PSD95), which tethers nNOS to NMDARs...
May 4, 2017: Neuroscience
Hyein Kim, Jing Cui, Michelle Frits, Christine Iannaccone, Jonathan Coblyn, Nancy A Shadick, Michael E Weinblatt, Yvonne C Lee
OBJECTIVE: Previous cross-sectional studies have shown that rheumatoid arthritis (RA) patients with fibromyalgia (FM) have higher disease activity, greater medical costs, and worse quality of life compared to RA patients without FM. We determined the impact of FM on 2-year changes in the functional status of RA patients in a prospective study. METHODS: Subjects included participants in the Brigham Rheumatoid Arthritis Sequential Study who were enrolled in a substudy of the effects of pain in RA...
February 9, 2017: Arthritis Care & Research
Chantal Berna, Irving Kirsch, Sean R Zion, Yvonne C Lee, Karin B Jensen, Pamela Sadler, Ted J Kaptchuk, Robert R Edwards
In randomized controlled trials, medication side effects may lead to beliefs that one is receiving the active intervention and enhance active treatment responses, thereby increasing drug-placebo differences. We tested these hypotheses with an experimental double-blind randomized controlled trial of a nonsteroidal anti-inflammatory drug with and without the addition of atropine to induce side effects. One hundred healthy volunteers were told they would be randomized to either combined analgesics that might produce dry mouth or inert placebos...
June 2017: Pain
Ezra M Cohen, Alessio Morley-Fletcher, Darshan H Mehta, Yvonne C Lee
BACKGROUND: To assess the quality of evidence for the effects of psychosocial therapies on pain and function in children with rheumatic diseases. METHODS: We conducted a literature search of MEDLINE and PsycINFO for randomized clinical trials of psychosocial interventions for pain and disability in children with rheumatic diseases from January 1969 to September 2015. Studies with a sample size less than 10 subjects were excluded. Study quality was assessed using the Jadad score...
January 17, 2017: Pediatric Rheumatology Online Journal
A J Dave, F Selzer, E Losina, I Usiskin, J E Collins, Y C Lee, P Band, D F Dalury, R Iorio, K Kindsfater, J N Katz
OBJECTIVE: Approximately 20% of total knee arthroplasty (TKA) recipients have suboptimal pain relief. We evaluated the association between pre-surgical widespread body pain and incomplete pain relief following TKA. METHOD: This prospective analysis included 241 patients with knee osteoarthritis (OA) undergoing unilateral TKA who completed questionnaires preoperatively and up to 12 months post-operatively. Questionnaires included the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain scale and a body pain diagram...
May 2017: Osteoarthritis and Cartilage
Yvonne C Lee, Arun S Karlamangla, Zhi Yu, Chih-Chin Liu, Joel S Finkelstein, Gail A Greendale, Siobán D Harlow, Daniel H Solomon
The development of pain is common in midlife, resulting in increased health care utilization and costs. The aim of this study was to determine the longitudinal trajectory of overall bodily pain among women during the transition between the reproductive years and menopause. We conducted analyses on a community-based, longitudinal cohort of women enrolled in the Study of Women's Health Across the Nation. One thousand four hundred ninety-five women met inclusion criteria, including: 1) defined date of the final menstrual period (FMP), and 2) complete data on Short Form-36 bodily pain...
February 2017: Journal of Pain: Official Journal of the American Pain Society
Chi Wai Cheung, Siu Wai Choi, Stanley Sau Ching Wong, Yvonne Lee, Michael Garnet Irwin
BACKGROUND: Chronic pain is expected to increase as the population ages. This study aimed to investigate the changes in prevalence, patterns, and help-seeking behavior of chronic pain and prevalence of neuropathic pain of an aging population in Hong Kong. METHODS: A cross-sectional, telephone interview with a structured questionnaire was conducted in a randomly selected sample of adults with acute or chronic pain of any kind in the general population to estimate the prevalence of chronic and neuropathic pain, and to describe sociodemographics and help-seeking behavior...
June 2017: Pain Practice: the Official Journal of World Institute of Pain
Sean D Boyden, Imtiyaz N Hossain, Alyssa Wohlfahrt, Yvonne C Lee
Although pain in rheumatoid arthritis (RA) is frequently thought to be inflammatory in nature, the association between measures of inflammation and pain intensity is low. This observation is likely due to the multifactorial nature of pain. In addition to pain from joint inflammation, RA patients may also have pain due to structural damage or central etiologies, such as aberrancies in the central nervous system (CNS) pain regulatory pathways. These CNS pathways include mechanisms that facilitate pain, as well as mechanisms that inhibit pain...
June 2016: Current Rheumatology Reports
Yvonne C Lee, Elena Massarotti, Robert R Edwards, Bing Lu, ChihChin Liu, Yuanyu Lo, Alyssa Wohlfahrt, Nancy D Kim, Daniel J Clauw, Daniel H Solomon
OBJECTIVE: Clinical trials have shown that serotonin norepinephrine reuptake inhibitors, such as milnacipran, decrease pain in noninflammatory pain conditions such as fibromyalgia and osteoarthritis. We examined the effect of milnacipran on self-reported pain intensity and experimental pain sensitivity among patients with rheumatoid arthritis (RA) with widespread pain and stable RA disease activity. METHODS: In this double-blind, crossover study, patients with RA with widespread pain, receiving a stable treatment regimen, were randomized (by a random number generator) to receive milnacipran 50 mg twice daily or placebo for 6 weeks, followed by a 3-week washout and crossed over to the other arm for the remaining 6 weeks...
January 2016: Journal of Rheumatology
Sheng Jia Low, Stanley Sau Ching Wong, Qiu Qiu, Yvonne Lee, Timmy Chi Wing Chan, Michael G Irwin, Chi Wai Cheung
Acute pain services (APS) have evolved over time. Strategies nowadays emphasize multimodal analgesic regimes using a combination of nonopioid adjuvant analgesic drugs, peripheral nerve blocks, and local anaesthetic wound infiltration where appropriate. APS should be assessed over time to evaluate changes in outcomes which form the basis for future development. In this audit, data of patients under APS care in Queen Mary hospital, Hong Kong, between 2009 and 2012 were analyzed and compared with data from a previous audit between 1992 and 1995...
October 2015: Medicine (Baltimore)
Ezra Cohen, Yvonne C Lee
Pain from osteoarthritis (OA) affects millions of people worldwide, yet treatments are limited to acetaminophen, NSAIDs, physical therapy, and ultimately, surgery when there is significant disability. In recent years, our understanding of pain pathways in OA has developed considerably. Though joint damage and inflammation play a significant role in pain generation, it is now understood that both central and peripheral nervous system mechanisms exacerbate symptoms. Evolving management strategies for OA address central factors (e...
December 2015: Current Osteoporosis Reports
Wan-Hung Lee, Zhili Xu, Nicole M Ashpole, Andy Hudmon, Pushkar M Kulkarni, Ganesh A Thakur, Yvonne Y Lai, Andrea G Hohmann
Aberrant increases in NMDA receptor (NMDAR) signaling contributes to central nervous system sensitization and chronic pain by activating neuronal nitric oxide synthase (nNOS) and generating nitric oxide (NO). Because the scaffolding protein postsynaptic density 95kDA (PSD95) tethers nNOS to NMDARs, the PSD95-nNOS complex represents a therapeutic target. Small molecule inhibitors IC87201 (EC5O: 23.94 μM) and ZL006 (EC50: 12.88 μM) directly inhibited binding of purified PSD95 and nNOS proteins in AlphaScreen without altering binding of PSD95 to ErbB4...
October 2015: Neuropharmacology
HyungChul Ryu, Sejin Seo, Myeong Seop Kim, Mi-Yeon Kim, Ho Shin Kim, Jihyae Ann, Phuong-Thao Tran, Van-Hai Hoang, Jieun Byun, Minghua Cui, Karam Son, Pankaz Kumar Sharma, Sun Choi, Peter M Blumberg, Robert Frank-Foltyn, Gregor Bahrenberg, Babette-Yvonne Koegel, Thomas Christoph, Sven Frormann, Jeewoo Lee
A series of 2-aryl pyridine C-region derivatives of 2-(3-fluoro-4-methylsulfonylaminophenyl)propanamides were investigated as hTRPV1 antagonists. Multiple compounds showed highly potent TRPV1 antagonism toward capsaicin comparable to previous lead 7. Among them, compound 9 demonstrated anti-allodynia in a mouse neuropathic pain model and blocked capsaicin-induced hypothermia in a dose-dependent manner. Docking analysis of 9 with our hTRPV1 homology model provided insight into its specific binding mode.
August 15, 2014: Bioorganic & Medicinal Chemistry Letters
Yvonne C Lee, Michelle L Frits, Christine K Iannaccone, Michael E Weinblatt, Nancy A Shadick, David A Williams, Jing Cui
OBJECTIVE: Among patients with rheumatoid arthritis (RA), pain may be attributed to peripheral inflammation or other causes, such as central pain mechanisms. The aim of this study was to use self-report measures and physical examination findings to identify clusters of RA patients who may have different causes of pain as well as different prognoses and treatment options. METHODS: Data from 169 RA patients with pain scores of >0 (on a 10-point numeric rating scale) in the Brigham and Women's Hospital Rheumatoid Arthritis Sequential Study were analyzed...
August 2014: Arthritis & Rheumatology
Yvonne C Lee
No abstract text is available yet for this article.
February 2014: Arthritis Care & Research
Yvonne C Lee
Pain is the most common reason patients with inflammatory arthritis see a rheumatologist. Patients consistently rate pain as one of their highest priorities, and pain is the single most important determinant of patient global assessment of disease activity. Although pain is commonly interpreted as a marker of inflammation, the correlation between pain intensity and measures of peripheral inflammation is imperfect. The prevalence of chronic, non-inflammatory pain syndromes such as fibromyalgia is higher among patients with inflammatory arthritis than in the general population...
January 2013: Current Rheumatology Reports
Yvonne C Lee, Bing Lu, Robert R Edwards, Ajay D Wasan, Nicholas J Nassikas, Daniel J Clauw, Daniel H Solomon, Elizabeth W Karlson
OBJECTIVE: Among rheumatoid arthritis (RA) patients, the intensity of pain may be out of proportion to the severity of peripheral inflammation. This observation suggests that mechanisms of central nervous system pain amplification, such as diminished conditioned pain modulation (CPM), may play a role in enhancing pain perception among some RA patients. This study was undertaken to examine the level of CPM, pressure-pain threshold, and pressure-pain tolerance among RA patients compared to healthy controls...
January 2013: Arthritis and Rheumatism
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