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Yang B, Wei W, Fang J, Xue Y, Wei J. Diabetic Neuropathic Pain and Circadian Rhythm: A Future Direction Worthy of Study. J Pain Res 2024; 17:3005-3020. [PMID: 39308994 PMCID: PMC11414757 DOI: 10.2147/jpr.s467249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 07/11/2024] [Indexed: 09/25/2024] Open
Abstract
More than half of people with diabetes experience neuropathic pain. Previous research has shown that diabetes patients' neuropathic pain exhibits a circadian cycle, which is characterized by increased pain sensitivity at night. Additional clinical research has revealed that the standard opioid drugs are ineffective at relieving pain and do not change the circadian rhythm. This article describes diabetic neuropathic pain and circadian rhythms separately, with a comprehensive focus on circadian rhythms. It is hoped that this characteristic of diabetic neuropathic pain can be utilized in the future to obtain more effective treatments for it.
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Affiliation(s)
- Baozhong Yang
- Department of Anaesthesiology, Taiyuan Central Hospital, Taiyuan, People’s Republic of China
| | - Wei Wei
- Department of Anaesthesiology, Taiyuan Central Hospital, Taiyuan, People’s Republic of China
- School of Anesthesia, Shanxi Medical University, Shanxi, People’s Republic of China
| | - Jun Fang
- Department of Anaesthesiology, Taiyuan Central Hospital, Taiyuan, People’s Republic of China
- School of Anesthesia, Shanxi Medical University, Shanxi, People’s Republic of China
| | - Yating Xue
- Department of Anaesthesiology, Taiyuan Central Hospital, Taiyuan, People’s Republic of China
- School of Anesthesia, Shanxi Medical University, Shanxi, People’s Republic of China
| | - Jiacheng Wei
- Department of Anaesthesiology, Taiyuan Central Hospital, Taiyuan, People’s Republic of China
- School of Anesthesia, Shanxi Medical University, Shanxi, People’s Republic of China
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2
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Chau PK, Ryan E, Dalen KT, Haugen F. Timing of acute cold exposure determines UCP1 and FGF21 expression - Possible interactions between the thermal environment, thermoregulatory responses, and peripheral clocks. J Therm Biol 2024; 124:103938. [PMID: 39142264 DOI: 10.1016/j.jtherbio.2024.103938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 06/26/2024] [Accepted: 07/15/2024] [Indexed: 08/16/2024]
Abstract
Thermoregulation is synchronized across the circadian cycle to uphold thermal homeostasis. To test if time-of-day matters for the response to environmental cold exposure, mice were acclimated to thermoneutrality (27 °C) for 2 months were subjected acutely (8 h) to cold ambient conditions (15 °C), whereas controls were maintained at thermoneutral conditions. The thermal exposure was tested in separate groups (N = 8) at three distinct time-of-day periods: in the LIGHT phase (L); the DARK phase (D); and a mix of the two (D + L). The magnitude of UCP1 protein and mRNA induction in brown adipose tissue (BAT) in response to acute cold exposure was time-of-day sensitive, peaking in LIGHT, whereas lower induction levels were observed in D + L, and DARK. Plasma levels of FGF21 were induced 3-fold by acute cold exposure at LIGHT and D + L, compared to the time-matched thermoneutral controls, whereas cold in DARK did not cause a significant increase of FGF21 plasma levels. Cold exposure affected, in BAT, the temporal mRNA expression patterns of core circadian clock components: Bmal1, Clock, Per1, Per3, Cry1, Cry2 Nr1d1, and Nr1d2, but in the liver, none of the transcripts were modified. Behavioral assessment using the Thermal Gradient Test (TGT) showed that acute cold exposure reduced cold sensitivity in D + L, but not in DARK. RNA-seq analyses of somatosensory neurons in DRG highlighted the role of the core circadian components in these cells, as well as transcriptional changes due to acute cold exposure. This elucidates the sensory system as a gauge and potential regulator of thermoregulatory responses based on circadian physiology. In conclusion, acute cold exposure elicits time-of-day specific effects on thermoregulatory pathways, which may involve underlying changes in thermal perception. These results have implications for efforts aimed at reducing risks associated with the organization of shift work in cold environments.
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Affiliation(s)
- Phong Kt Chau
- Division of Work Psychology and Physiology, National Institute of Occupational Health (STAMI), Oslo, Norway
| | - Elin Ryan
- Division of Work Psychology and Physiology, National Institute of Occupational Health (STAMI), Oslo, Norway
| | - Knut Tomas Dalen
- Department of Nutrition and Norwegian Transgenic Center, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Fred Haugen
- Division of Work Psychology and Physiology, National Institute of Occupational Health (STAMI), Oslo, Norway.
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3
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Stavås JA, Nilsen KB, Matre D. The association between proportion of night shifts and musculoskeletal pain and headaches in nurses: a cross-sectional study. BMC Musculoskelet Disord 2024; 25:67. [PMID: 38229099 DOI: 10.1186/s12891-024-07196-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 01/11/2024] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND AND PURPOSE Shift work is associated with musculoskeletal pain and headaches, but little is known about how the intensity of shift work exposure is related to musculoskeletal pain and headaches. This study aimed to investigate whether a higher proportion of night shifts is associated with a higher occurrence of musculoskeletal pain and headaches. Furthermore, to investigate whether sleep duration can mediate this potential association. METHOD The study included 684 nurses in rotating shift work who responded to a daily questionnaire about working hours, sleep, and pain for 28 consecutive days. The data were treated cross-sectionally. RESULTS A negative binomial regression analysis adjusted for age and BMI revealed that working a higher proportion of night shifts is not associated with a higher occurrence of musculoskeletal pain and headaches. On the contrary, those working ≥ 50% night shifts had a significantly lower occurrence of pain in the lower extremities than those who worked < 25% night shifts (IRR 0.69 95% CI 0.51, 0.94). There was no indication of a mediation effect with total sleep time (TST). CONCLUSION The results of this study indicate that working a higher proportion of night shifts is not associated with a higher occurrence of musculoskeletal pain and headaches.
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Affiliation(s)
- Jon Are Stavås
- Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
- National Institute of Occupational Health (STAMI), Oslo, Norway
| | - Kristian Bernhard Nilsen
- Neuroscience Clinic, Department of Neurology and Department of Research and Innovation, Oslo University Hospital, Oslo, Norway
| | - Dagfinn Matre
- National Institute of Occupational Health (STAMI), Oslo, Norway.
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4
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Oh A, Koehler A, Yonker M, Troester M. Sleep Disorders and Chronic Pain Syndromes in the Pediatric Population. Semin Pediatr Neurol 2023; 48:101085. [PMID: 38065632 DOI: 10.1016/j.spen.2023.101085] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/18/2023] [Accepted: 09/13/2023] [Indexed: 12/18/2023]
Abstract
Sleep problems are widespread in children and adolescents suffering from chronic pain disorders. Sleep loss intensifies the experience of pain and is detrimental to the budding self-efficacy of a young individual with limitless horizons. Addressing sleep disorders may prevent the chronification of pain and prevent adverse health outcomes, such as functional impairment, psychiatric comorbidities and overall poor quality of life. This review will explore the cyclical nature between sleep, pain and mood, as well as the functional impact of this relationship on children and adolescents. There will be a discussion about sleep assessment and diagnostic testing, followed by a description of sleep disturbances found in specific pain conditions, ranging from headache, musculoskeletal/abdominal pain, to rheumatologic disorders. Finally, there will be a brief review of pharmacologic and behavioral interventions designed to improve sleep quality, and when possible, to alleviate pain.
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Affiliation(s)
- Ann Oh
- Division of Neurology, UCSF Pediatric Headache Center, University of California, San Francisco, UCSF Benioff Children's Hospital, Mission Hall, 550 16th Street, 5th Floor, San Francisco, CA 94158, USA.
| | - Angelina Koehler
- Division of Neurology, Pediatric Headache Program, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, Colorado
| | - Marcy Yonker
- Division of Neurology, Pediatric Headache Program, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, Colorado
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5
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Rouhi S, Topcu J, Egorova-Brumley N, Jordan AS. The impact of sleep disturbance on pain perception: A systematic review examining the moderating effect of sex and age. Sleep Med Rev 2023; 71:101835. [PMID: 37586144 DOI: 10.1016/j.smrv.2023.101835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 07/27/2023] [Accepted: 08/06/2023] [Indexed: 08/18/2023]
Abstract
Females have increased pain sensitivity and are more vulnerable to chronic pain conditions. Sleep disturbances are comorbid with chronic pain and exacerbate pain symptoms. Different types of sleep disturbance affect pain perception distinctly, but it is not clear if these effects are equal in men and women. This systematic review investigated potential differences in how sleep disturbance affects pain in males and females. We searched EBSCO, MEDLINE, Psych INFO, Science Direct, and Web of Science from January 2001 to November 2022 and found 38 studies with 978 participants. Separate random-effects models were used to estimate the pooled effect sizes based on standardized mean differences (SMDs) of experimental sleep disturbance paradigms on various pain outcomes. Sex moderated the effect of sleep disturbance on pain facilitation (SMD = 0.13; 95%CI: 0.004 to 0.022; p=.009) and pain inhibition (SMD = 0.033; 95%CI: 0.011 to 0.054; p=.005), with increased facilitation and decreased inhibition in females, but the opposite effect in males. Further, age moderated the effects of total sleep deprivation (SMD = -0.194; 95%CI -0.328 to -0.060; p=.008) on pain sensitivity and fragmented sleep (SMD = -0.110; 95%CI: 0.148 to -0.072; p<.001) on pain threshold. While the moderating effect of sex and age on the sleep-pain relationship was small, these factors need to be considered in future sleep-pain research.
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Albinni B, de Zambotti M, Iacovides S, Baker FC, King CD. The complexities of the sleep-pain relationship in adolescents: A critical review. Sleep Med Rev 2023; 67:101715. [PMID: 36463709 PMCID: PMC9868111 DOI: 10.1016/j.smrv.2022.101715] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 10/20/2022] [Accepted: 11/03/2022] [Indexed: 11/13/2022]
Abstract
Chronic pain is a common and disabling condition in adolescents. Disturbed sleep is associated with many detrimental effects in adolescents with acute and chronic pain. While sleep and pain are known to share a reciprocal relationship, the sleep-pain relationship in adolescence warrants further contextualization within normally occurring maturation of several biopsychological processes. Since sleep and pain disorders begin to emerge in early adolescence and are often comorbid, there is a need for a comprehensive picture of their interrelation especially related to temporal relationships and mechanistic drivers. While existing reviews provide a solid foundation for the interaction between disturbed sleep and pain in youth, we will extend this review by highlighting current methodological challenges for both sleep and pain assessments, exploring the recent evidence for directionality in the sleep-pain relationship, reviewing potential mechanisms and factors underlying the relationship, and providing direction for future investigations. We will also highlight the potential role of digital technologies in advancing the understanding of the sleep and pain relationship. Ultimately, we anticipate this information will facilitate further research and inform the management of pain and poor sleep, which will ultimately improve the quality of life in adolescents and reduce the risk of pain persisting into adulthood.
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Affiliation(s)
- Benedetta Albinni
- Center for Health Sciences, SRI International, Menlo Park, CA, USA; Department of Psychology, University of Campania "Luigi Vanvitelli", Italy
| | | | - Stella Iacovides
- Brain Function Research Group, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Fiona C Baker
- Center for Health Sciences, SRI International, Menlo Park, CA, USA; Brain Function Research Group, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Christopher D King
- Department of Pediatrics, University of Cincinnati College of Medicine, Division of Behavioral Medicine and Clinical Psychology, Pediatric Pain Research Center (PPRC), Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
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7
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Bumgarner JR, McCray EW, Nelson RJ. The disruptive relationship among circadian rhythms, pain, and opioids. Front Neurosci 2023; 17:1109480. [PMID: 36875657 PMCID: PMC9975345 DOI: 10.3389/fnins.2023.1109480] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 01/26/2023] [Indexed: 02/17/2023] Open
Abstract
Pain behavior and the systems that mediate opioid analgesia and opioid reward processing display circadian rhythms. Moreover, the pain system and opioid processing systems, including the mesolimbic reward circuitry, reciprocally interact with the circadian system. Recent work has demonstrated the disruptive relationship among these three systems. Disruption of circadian rhythms can exacerbate pain behavior and modulate opioid processing, and pain and opioids can influence circadian rhythms. This review highlights evidence demonstrating the relationship among the circadian, pain, and opioid systems. Evidence of how disruption of one of these systems can lead to reciprocal disruptions of the other is then reviewed. Finally, we discuss the interconnected nature of these systems to emphasize the importance of their interactions in therapeutic contexts.
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Affiliation(s)
- Jacob R Bumgarner
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV, United States
| | - Evan W McCray
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV, United States
| | - Randy J Nelson
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV, United States
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Galić M, Sić L, Slišković A. " I Constantly Feel Worn Out": Mixed-methodology Approach to Seafarers' Sleep on Board. INQUIRY : A JOURNAL OF MEDICAL CARE ORGANIZATION, PROVISION AND FINANCING 2023; 60:469580231159746. [PMID: 36941750 PMCID: PMC10031608 DOI: 10.1177/00469580231159746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/27/2022] [Accepted: 02/08/2023] [Indexed: 03/23/2023]
Abstract
Although seafaring is one of the most important professions for trade in goods in the 21st century, the results of recent research indicate that seafarers face various sources of stress in their work, including high workload and long working hours. These stressors can be reflected in low job satisfaction and poor mental health, which can result in sleep problems, and consequently lead to various somatic symptoms. The main goal of this mixed method research was, therefore, to expand knowledge about seafarers' sleep on board, whereby a sequential explanatory design was used. Study 1 (N = 286 male seafarers from Croatia) examined whether the number of sleep hours on board has a mediating role in explaining the relationship between job satisfaction and mental health as predictors of somatic symptoms. The results of the path analysis showed that higher job satisfaction directly and indirectly through longer sleep on board reduces the number of somatic symptoms, while better mental health directly contributes to fewer somatic symptoms. Study 2 (N = 205 seafarers from Croatia) aimed to get a deeper insight into the sleep of seafarers on board, whereby 39% (N = 80) of the participants had difficulties related to sleep problems on board. The thematic analysis of their answers (N = 76) showed the sleeping difficulties experienced by seafarers on board and gave an insight into the consequences of sleeping difficulties and the coping strategies they use. The results of this research indicate the importance of developing healthy work environments for seafarers.
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Mun CJ, Burgess HJ, Sears DD, Parthasarathy S, James D, Altamirano U, Sajith S, Lakhotia A, Fillingim RB, Youngstedt SD. Circadian Rhythm and Pain: a Review of Current Research and Future Implications. CURRENT SLEEP MEDICINE REPORTS 2022. [DOI: 10.1007/s40675-022-00228-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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10
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Bumgarner JR, Walker WH, Nelson RJ. Circadian rhythms and pain. Neurosci Biobehav Rev 2021; 129:296-306. [PMID: 34375675 PMCID: PMC8429267 DOI: 10.1016/j.neubiorev.2021.08.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 06/30/2021] [Accepted: 08/04/2021] [Indexed: 10/20/2022]
Abstract
The goal of this review is to provide a perspective on the nature and importance of the relationship between the circadian and pain systems. We provide: 1) An overview of the circadian and pain systems, 2) a review of direct and correlative evidence that demonstrates diurnal and circadian rhythms within the pain system; 3) a perspective highlighting the need to consider the role of a proposed feedback loop of circadian rhythm disruption and maladaptive pain; 4) a perspective on the nature of the relationship between circadian rhythms and pain. In summary, we propose that there is no single locus responsible for producing the circadian rhythms of the pain system. Instead, circadian rhythms of pain are a complex result of the distributed rhythms present throughout the pain system, especially those of the descending pain modulatory system, and the rhythms of the systems with which it interacts, including the opioid, endocrine, and immune systems.
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Affiliation(s)
- Jacob R Bumgarner
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA.
| | - William H Walker
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA
| | - Randy J Nelson
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA
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11
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Matre D, Christensen JO, Mork PJ, Ferreira P, Sand T, Nilsen KB. Shift work, inflammation and musculoskeletal pain-The HUNT Study. Occup Med (Lond) 2021; 71:422-427. [PMID: 34551112 DOI: 10.1093/occmed/kqab133] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Studies have indicated that shift work, in particular night work, is associated with chronic musculoskeletal pain but the mechanisms are unclear. It has been suggested that sleep disturbance, a common complaint among shift and night workers, may induce low-grade inflammation as well as heightened pain sensitivity. AIMS Firstly, this study was aimed to examine the cross-sectional associations between shift work, C-reactive protein (CRP) level and chronic musculoskeletal pain, and secondly, to analyse CRP as a mediator between shift work and chronic musculoskeletal pain. METHODS The study included 23 223 vocationally active women and men who participated in the HUNT4 Survey of the Trøndelag Health Study (HUNT). Information was collected by questionnaires, interviews, biological samples and clinical examination. RESULTS Regression analyses adjusted for sex, age and education revealed significant associations between shift work and odds of any chronic musculoskeletal pain (odd ratio [OR] 1.11, 95% confidence interval [CI] 1.04-1.19), between shift work and CRP level (OR 1.09, 95% CI 1.03-1.16) and between CRP level 3.00-10 mg/L and any chronic musculoskeletal pain (OR 1.38, 95% CI 1.27-1.51). Shift work and CRP were also associated with number of chronic pain sites. Mediation analysis indicated that shift work was indirectly associated with any chronic musculoskeletal pain through CRP (OR 1.03, 95% CI 1.01-1.06). CONCLUSIONS The results support the hypothesis that shift work is associated with chronic musculoskeletal pain, and that systemic inflammation may be a biological mechanism linking shift work to chronic pain.
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Affiliation(s)
- D Matre
- Division of Research, National Institute of Occupational Health, Oslo 0033, Norway
| | - J O Christensen
- Division of Research, National Institute of Occupational Health, Oslo 0033, Norway
| | - P J Mork
- Department of Public Health and Nursing, Norwegian University of Science and Technology (NTNU), Trondheim 7004, Norway
| | - P Ferreira
- Musculoskeletal Research Group, Faculty of Health Sciences, The University of Sydney, Sydney, New South Wales 2600, Australia
| | - T Sand
- Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim 7030, Norway.,Department of Neurology and Clinical Neurophysiology, St. Olavs Hospital, Trondheim 7030, Norway
| | - K B Nilsen
- Section for Clinical Neurophysiology, Department of Neurology, Oslo University Hospital-Ullevål, Oslo 0424, Norway
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12
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Cheng K, Martin LF, Slepian MJ, Patwardhan AM, Ibrahim MM. Mechanisms and Pathways of Pain Photobiomodulation: A Narrative Review. THE JOURNAL OF PAIN 2021; 22:763-777. [PMID: 33636371 PMCID: PMC8277709 DOI: 10.1016/j.jpain.2021.02.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/26/2021] [Accepted: 02/09/2021] [Indexed: 12/14/2022]
Abstract
A growing body of evidence supports the modulation of pain by light exposure. As such, phototherapy is being increasingly utilized for the management of a variety of pain conditions. The modes of delivery, and hence applications of phototherapy, vary by wavelength, intensity, and route of exposure. As such, differing mechanisms of action exist depending upon those parameters. Cutaneous application of red light (660 nm) has been shown to reduce pain in neuropathies and complex regional pain syndrome-I, whereas visual application of the same wavelength of red light has been reported to exacerbate migraine headache in patients and lead to the development of functional pain in animal models. Interestingly visual exposure to green light can result in reduction in pain in variety of pain conditions such as migraine and fibromyalgia. Cutaneous application typically requires exposure on the order of minutes, whereas visual application requires exposure on the order of hours. Both routes of exposure elicit changes centrally in the brainstem and spinal cord, and peripherally in the dorsal root ganglia and nociceptors. The mechanisms of photobiomodulation of pain presented in this review provide a foundation in furtherance of exploration of the utility of phototherapy as a tool in the management of pain. PERSPECTIVE: This review synopsizes the pathways and mechanisms through which light modulates pain and the therapeutic utility of different colors and exposure modalities of light on pain. Recent advances in photobiomodulation provide a foundation for understanding this novel treatment for pain on which future translational and clinical studies can build upon.
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Affiliation(s)
- Kevin Cheng
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, Arizona
| | - Laurent F Martin
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, Arizona; Department of Anesthesiology, College of Medicine, University of Arizona, Tucson, Arizona
| | - Marvin J Slepian
- Department of Medicine, College of Medicine, University of Arizona, Tucson, Arizona; Department of Biomedical Engineering, University of Arizona, Tucson, Arizona; Sarver Heart Center, University of Arizona, Tucson, Arizona; Arizona Center for Accelerated Biomedical Innovation, University of Arizona, Tucson, Arizona
| | - Amol M Patwardhan
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, Arizona; Department of Anesthesiology, College of Medicine, University of Arizona, Tucson, Arizona; Department of Neurosurgery, College of Medicine, University of Arizona, Tucson, Arizona; Comprehensive Pain and Addiction Center, University of Arizona, Tucson, Arizona
| | - Mohab M Ibrahim
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, Arizona; Department of Anesthesiology, College of Medicine, University of Arizona, Tucson, Arizona; Department of Neurosurgery, College of Medicine, University of Arizona, Tucson, Arizona.
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13
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Bumgarner JR, Walker WH, Liu JA, Walton JC, Nelson RJ. Dim Light at Night Exposure Induces Cold Hyperalgesia and Mechanical Allodynia in Male Mice. Neuroscience 2020; 434:111-119. [PMID: 32201267 PMCID: PMC7176554 DOI: 10.1016/j.neuroscience.2020.03.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/10/2020] [Accepted: 03/12/2020] [Indexed: 01/13/2023]
Abstract
The growing presence of artificial lighting across the globe presents a number of challenges to human and ecological health despite its societal benefits. Exposure to artificial light at night, a seemingly innocuous aspect of modern life, disrupts behavior and physiological functions. Specifically, light at night induces neuroinflammation, which is implicated in neuropathic and nociceptive pain states, including hyperalgesia and allodynia. Because of its influence on neuroinflammation, we investigated the effects of dim light at night exposure on pain responsiveness in male mice. In this study, mice exposed to four days of dim (5 lux) light at night exhibited cold hyperalgesia. Further, after 28 days of exposure, mice exhibited both cold hyperalgesia and mechanical allodynia. No heat/hot hyperalgesia was observed in this experiment. Altered nociception in mice exposed to dim light at night was concurrent with upregulated interleukin-6 and nerve growth factor mRNA expression in the medulla and elevated μ-opioid receptor mRNA expression in the periaqueductal gray region of the brain. The current results support the relationship between disrupted circadian rhythms and altered pain sensitivity. In summary, we observed that dim light at night induces cold hyperalgesia and mechanical allodynia, potentially through elevated neuroinflammation and dysregulation of the endogenous opioid system.
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Affiliation(s)
- Jacob R Bumgarner
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA.
| | - William H Walker
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA
| | - Jennifer A Liu
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA
| | - James C Walton
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA
| | - Randy J Nelson
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA
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14
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Matre D, Nilsen KB, Katsifaraki M, Waage S, Pallesen S, Bjorvatn B. Pain complaints are associated with quick returns and insomnia among Norwegian nurses, but do not differ between shift workers and day only workers. Int Arch Occup Environ Health 2019; 93:291-299. [PMID: 31691014 DOI: 10.1007/s00420-019-01481-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 10/21/2019] [Indexed: 12/28/2022]
Abstract
PURPOSE To determine whether common work schedule characteristics among Norwegian nurses were associated with subjective pain complaints. METHODS A cross-sectional study in a sample of 1585 nurses, part of the longitudinal questionnaire-based cohort project 'Survey of Shift work, Sleep and Health' (SUSSH). Pain from six regions were assessed: 'headache', 'neck/shoulder/upper back', 'upper extremities', 'lower back', 'lower extremities', and 'abdomen'. Logistic and negative binomial regression (adjusted for age, sex, percentage of full-time equivalent, marital status and children living at home) were conducted where work schedule, number of night shifts last year, number of quick returns (QR) last year (< 11 h between shifts) and insomnia were predictors of localized pain, widespread pain and number of pain sites. RESULTS Localized pain, widespread pain and number of pain sites were associated with insomnia (OR 2.06, 95% CI 1.66-2.55, OR 2.14, 95% CI 1.47-3.09, IRR 1.70, 95% CI 1.51-1.91, respectively). Work schedule and number of night shifts worked last year were not associated with any of the three pain measures. Number of QRs worked last year tended to be associated with number of pain sites. CONCLUSION The study did not support the hypothesis that non-daytime work schedules are associated with pain complaints. Neither was there support for the hypothesis linking number of night shifts, or the number of QRs, to pain complaints. Future studies should aim to determine the association between QRs and pain in more detail. Pain complaints were associated with insomnia.
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Affiliation(s)
- Dagfinn Matre
- Department of Work Psychology and Physiology, National Institute of Occupational Health, Pb 8149 Dep, 0033, Oslo, Norway.
| | - Kristian Bernhard Nilsen
- Section for Clinical Neurophysiology, Department of Neurology, Oslo University Hospital-Ullevål, Oslo, Norway
| | - Maria Katsifaraki
- Department of Work Psychology and Physiology, National Institute of Occupational Health, Pb 8149 Dep, 0033, Oslo, Norway
| | - Siri Waage
- Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | - Ståle Pallesen
- Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway
- Department of Psychosocial Science, University of Bergen, Bergen, Norway
| | - Bjørn Bjorvatn
- Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
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15
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Ree A, Nilsen KB, Knardahl S, Sand T, Matre D. Sleep restriction does not potentiate nocebo‐induced changes in pain and cortical potentials. Eur J Pain 2019; 24:110-121. [DOI: 10.1002/ejp.1466] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 07/30/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Anbjørn Ree
- Department of Behavioral Sciences in Medicine, Institute of Basic Medical Sciences, Faculty of Medicine University of Oslo Oslo Norway
| | - Kristian Bernhard Nilsen
- Department of Neurology Oslo University Hospital Oslo Norway
- Research and Communication Unit for Musculoskeletal Health (FORMI) Oslo University Hospital Oslo Norway
| | - Stein Knardahl
- Department of Work Psychology and Physiology National Institute of Occupational Health Oslo Norway
| | - Trond Sand
- Department of Neurology and Clinical Neurophysiology St. Olavs Hospital Trondheim Norway
- Department of Neuromedicine and movement science Norwegian University of Science and Technology Trondheim Norway
| | - Dagfinn Matre
- Department of Work Psychology and Physiology National Institute of Occupational Health Oslo Norway
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