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He Y, Fan W, Xu Y, Liu YL, He H, Huang F. Distribution and colocalization of melatonin 1a-receptor and NADPH-d in the trigeminal system of rat. PeerJ 2019; 7:e6877. [PMID: 31106073 PMCID: PMC6500374 DOI: 10.7717/peerj.6877] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 03/31/2019] [Indexed: 01/15/2023] Open
Abstract
Melatonin and nitric oxide (NO) are involved in orofacial signal processing in the trigeminal sensory system. The aim of the present study was to examine the distribution of melatonin 1a-receptor (MT1) and its colocalization with nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d) in the spinal trigeminal nucleus (STN), the trigeminal ganglion (TG), and the mesencephalic trigeminal nucleus (MTN) in the rat, using histochemistry and immunohistochemistry. Our results show that MT1-positive neurons are widely distributed in the TG and the subnucleus caudalis of the STN. Furthermore, we found that MT1 colocalizes with NADPH-d throughout the TG and MTN, most extensively in the TG. The distribution pattern of MT1 and its colocalization with NADPH-d indicate that melatonin might play an important role in the trigeminal sensory system, which could be responsible for the regulation of NO levels.
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Affiliation(s)
- Yifan He
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Wenguo Fan
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Yue Xu
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Yong Liang Liu
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Hongwen He
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Fang Huang
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
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Cui Y, Zhang Y, Liu G. Syringin may exert sleep-potentiating effects through the NOS/NO pathway. Fundam Clin Pharmacol 2014; 29:178-84. [PMID: 25377727 DOI: 10.1111/fcp.12095] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 09/28/2014] [Accepted: 10/24/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Yue Cui
- Department of Medicine; Tianjin HuanHu Hospital; Tianjin 300060 China
| | - Ying Zhang
- Department of Medicine; Tianjin HuanHu Hospital; Tianjin 300060 China
| | - Gang Liu
- Department of Medicine; Tianjin HuanHu Hospital; Tianjin 300060 China
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Sutton BC, Opp MR. Musculoskeletal sensitization and sleep: chronic muscle pain fragments sleep of mice without altering its duration. Sleep 2014; 37:505-13. [PMID: 24587573 DOI: 10.5665/sleep.3486] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
STUDY OBJECTIVES Musculoskeletal pain in humans is often associated with poor sleep quality. We used a model in which mechanical hypersensitivity was induced by injection of acidified saline into muscle to study the impact of musculoskeletal sensitization on sleep of mice. DESIGN A one month pre-clinical study was designed to determine the impact of musculoskeletal sensitization on sleep of C57BL/6J mice. METHODS We instrumented mice with telemeters to record the electroencephalogram (EEG) and body temperature. We used an established model of musculoskeletal sensitization in which mechanical hypersensitivity was induced using two unilateral injections of acidified saline (pH 4.0). The injections were given into the gastrocnemius muscle and spaced five days apart. EEG and body temperature recordings started prior to injections (baseline) and continued for three weeks after musculoskeletal sensitization was induced by the second injection. Mechanical hypersensitivity was assessed using von Frey filaments at baseline (before any injections) and on days 1, 3, 7, 14, and 21 after the second injection. RESULTS Mice injected with acidified saline developed bilateral mechanical hypersensitivity at the hind paws as measured by von Frey testing and as compared to control mice and baseline data. Sleep during the light period was fragmented in experimental mice injected with acidified saline, and EEG spectra altered. Musculoskeletal sensitization did not alter the duration of time spent in wakefulness, non-rapid eye movement sleep, or rapid eye movement sleep. CONCLUSIONS Musculoskeletal sensitization in this model results in a distinct sleep phenotype in which sleep is fragmented during the light period, but the overall duration of sleep is not changed. This study suggests the consequences of musculoskeletal pain include sleep disruption, an observation that has been made in the clinical literature but has yet to be studied using preclinical models.
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Affiliation(s)
- Blair C Sutton
- Anesthesiology & Pain Medicine University of Washington, Seattle, WA ; Neuroscience Graduate Program, University of Michigan, Ann Arbor, MI
| | - Mark R Opp
- Anesthesiology & Pain Medicine University of Washington, Seattle, WA ; Program of Neurobiology and Behavior University of Washington, Seattle, WA
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Cobos EJ, Portillo-Salido E. "Bedside-to-Bench" Behavioral Outcomes in Animal Models of Pain: Beyond the Evaluation of Reflexes. Curr Neuropharmacol 2014; 11:560-91. [PMID: 24396334 PMCID: PMC3849784 DOI: 10.2174/1570159x113119990041] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 04/05/2013] [Accepted: 05/24/2013] [Indexed: 12/21/2022] Open
Abstract
Despite the myriad promising new targets and candidate analgesics recently identified in preclinical pain studies, little translation to novel pain medications has been generated. The pain phenotype in humans involves complex behavioral alterations, including changes in daily living activities and psychological disturbances. These behavioral changes are not reflected by the outcome measures traditionally used in rodents for preclinical pain testing, which are based on reflexes evoked by sensory stimuli of different types (mechanical, thermal or chemical). These measures do not evaluate the impact of the pain experience on the global behavior or disability of the animals, and therefore only consider a limited aspect of the pain phenotype. The development of relevant new outcomes indicative of pain to increase the validity of animal models of pain has been increasingly pursued over the past few years. The aim has been to translate “bedside-to-bench” outcomes from the human pain phenotype to rodents, in order to complement traditional pain outcomes by providing a closer and more realistic measure of clinical pain in rodents. This review summarizes and discusses the most important nonstandard outcomes for pain assessment in preclinical studies. The advantages and drawbacks of these techniques are considered, and their potential impact on the validation of potential analgesics is evaluated.
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Affiliation(s)
- Enrique J Cobos
- Department of Pharmacology, School of Medicine, University of Granada, Avenida de Madrid 11, 18012 Granada
| | - Enrique Portillo-Salido
- Drug Discovery and Preclinical Development, Esteve, Avenida Mare de Déu de Montserrat 221, 08041 Barcelona, Spain
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Miyake S, Takahashi SS, Yoshino F, Todoki K, Sasaguri K, Sato S, Lee MCI. Nitric oxide levels in rat hypothalamus are increased by restraint stress and decreased by biting. Redox Rep 2013; 13:31-9. [DOI: 10.1179/135100008x259132] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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6
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Matos G, Ribeiro DA, Alvarenga TA, Hirotsu C, Scorza FA, Le Sueur-Maluf L, Noguti J, Cavalheiro EA, Tufik S, Andersen ML. Behavioral and genetic effects promoted by sleep deprivation in rats submitted to pilocarpine-induced status epilepticus. Neurosci Lett 2012; 515:137-40. [DOI: 10.1016/j.neulet.2012.03.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Revised: 01/28/2012] [Accepted: 03/10/2012] [Indexed: 12/20/2022]
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7
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Effect of acute gouty arthritis on sleep patterns: A preclinical study. Eur J Pain 2012; 13:146-53. [DOI: 10.1016/j.ejpain.2008.04.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Revised: 03/11/2008] [Accepted: 04/03/2008] [Indexed: 11/18/2022]
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Palma BD, Tufik S. Increased disease activity is associated with altered sleep architecture in an experimental model of systemic lupus erythematosus. Sleep 2010; 33:1244-8. [PMID: 20857872 PMCID: PMC2938866 DOI: 10.1093/sleep/33.9.1244] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
STUDY OBJECTIVES The aim of this study was to evaluate sleep patterns during the course of the disease in (NZB/NZW)F1 mice, an experimental model of systemic lupus erythematosus (SLE). DESIGN Female mice were implanted with electrodes for chronic recording of sleep-wake cycles during the entire experimental phase (9, 19, and 29 weeks of age). The disease course was also assessed. At each time-point, blood samples were collected from the orbital plexus to evaluate serum antinuclear antibodies (ANA), which are important serologic parameters of disease evolution. Pain perception was also evaluated. MEASUREMENTS AND RESULTS During the dark phase, (NZB/NZW)F, mice aged 19 weeks spent more time in sleep, and, as a consequence, the total waking time was lower when compared with earlier periods. An augmented number of sleep-stage transitions and microarousals were observed at the 29th week of life in both light and dark phases. At this same time-point, the mice showed lower pain thresholds than they had at 9 weeks of life. The disease status was confirmed; the entire group of mice at 29 weeks of life showed positive ANA with high titer levels. CONCLUSIONS The sleep-recording data showed that, during the progress and severe phases of the disease (19 and 29 wks of age, respectively), sleep architecture is altered. According to these results, increased sleep fragmentation, disease activity, and pain sensitivity are features observed in these mice, similar to symptoms of SLE.
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Affiliation(s)
- Beatriz Duarte Palma
- Department of Psychobiology, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.
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The influence of orofacial pain on sleep pattern: A review of theory, animal models and future directions. Sleep Med 2009; 10:822-8. [DOI: 10.1016/j.sleep.2008.09.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Revised: 08/29/2008] [Accepted: 09/08/2008] [Indexed: 11/24/2022]
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10
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Schütz TCB, Andersen ML, Silva A, Tufik S. Distinct gender-related sleep pattern in an acute model of TMJ pain. J Dent Res 2009; 88:471-6. [PMID: 19493893 DOI: 10.1177/0022034509334618] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Since it is recognized that acute inflammation of the temporomandibular joint results in sleep disturbances in male rats, and that the orofacial region may display a site-specific effect of ovarian hormones on nociception, we hypothesized that distinct genders would respond differently when subjected to this inflammatory acute orofacial pain. Sleep was monitored after injection of saline/Freund's adjuvant into the temporomandibular joint in male and female (proestrus and diestrus phases) rats. Progesterone and stress-related hormones were also assessed. In males, Freund's adjuvant induced a significant nociceptive response and sleep disturbances. Behavior and sleep architecture in the females remained unaffected. Our results suggest that females and males present distinct responses to an acute model of orofacial pain.
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Affiliation(s)
- T C B Schütz
- Department of Psychobiology, Universidade Federal de São Paulo, Escola Paulista de Medicina, Rua Napoleão de Barros, 925, Vila Clementino, SP-04024-002, São Paulo, SP, Brazil.
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Revel FG, Gottowik J, Gatti S, Wettstein JG, Moreau JL. Rodent models of insomnia: A review of experimental procedures that induce sleep disturbances. Neurosci Biobehav Rev 2009; 33:874-99. [DOI: 10.1016/j.neubiorev.2009.03.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 03/04/2009] [Accepted: 03/04/2009] [Indexed: 12/21/2022]
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Andersen ML, Ribeiro DA, Bergamaschi CT, Alvarenga TA, Silva A, Zager A, Campos RR, Tufik S. Distinct effects of acute and chronic sleep loss on DNA damage in rats. Prog Neuropsychopharmacol Biol Psychiatry 2009; 33:562-7. [PMID: 19258023 DOI: 10.1016/j.pnpbp.2009.02.014] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2009] [Revised: 02/20/2009] [Accepted: 02/20/2009] [Indexed: 01/20/2023]
Abstract
The aim of this investigation was to evaluate genetic damage induced in male rats by experimental sleep loss for short-term (24 and 96 h) and long-term (21 days) intervals, as well as their respective recovery periods in peripheral blood, brain, liver and heart tissue by the single cell gel (comet) assay. Rats were paradoxically deprived of sleep (PSD) by the platform technique for 24 or 96 h, or chronically sleep-restricted (SR) for 21 days. We also sought to verify the time course of their recovery after 24 h of rebound sleep. The results showed DNA damage in blood cells of rats submitted to PSD for 96 h. Brain tissue showed extensive genotoxic damage in PSD rats (both 24 and 96 h), though the effect was more pronounced in the 96 h group. Rats allowed to recover from the PSD-96 h and SR-21 days treatments showed DNA damage as compared to negative controls. Liver and heart did not display any genotoxicity activity. Corticosterone concentrations were increased after PSD (24 and 96 h) relative to control rats, whereas these levels were unaffected in the SR group. Collectively, these findings reveal that sleep loss was able to induce genetic damage in blood and brain cells, especially following acute exposure. Since DNA damage is an important step in events leading to genomic instability, this study represents a relevant contribution to the understanding of the potential health risks associated with sleep deprivation.
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Affiliation(s)
- M L Andersen
- Department of Psychobiology, Universidade Federal de São Paulo (UNIFESP), Brazil
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Silva A, Andersen ML, Tufik S. Sleep pattern in an experimental model of osteoarthritis. Pain 2008; 140:446-455. [DOI: 10.1016/j.pain.2008.09.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2008] [Revised: 09/16/2008] [Accepted: 09/19/2008] [Indexed: 10/21/2022]
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Brisby H, Ashley H, Diwan AD. In vivo measurement of facet joint nitric oxide in patients with chronic low back pain. Spine (Phila Pa 1976) 2007; 32:1488-92. [PMID: 17572616 DOI: 10.1097/brs.0b013e318067dc97] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Prospective case-control study testing a new diagnostic method. OBJECTIVE The aim of the present study was to investigate the concentration of nitric oxide (NO) in the perifacetal region in patients with chronic low back pain and healthy controls. SUMMARY OF BACKGROUND DATA Facet joint arthrosis may be a pain source in chronic back pain. Increased concentrations of NO, an oxygen-free radical, have been demonstrated in temporomandibular and knee joints with osteoarthritis. PATIENTS AND METHODS Patients with at least 6 months' duration of chronic low back pain and signs of facet joint osteoarthrosis (n = 24) and healthy volunteers (n = 7) were included. A detailed questionnaire, including visual analogue scale, was completed before and 6 weeks after the measurements. NO was measured with a custom-designed electrochemical real-time NO sensor inserted under fluoroscopic guidance. All patients received corticosteroids and local anesthetics after NO measurements. RESULTS NO measurements were obtained from all participants. No adverse effects were noted. The patients with chronic low back pain demonstrated higher concentrations of NO in the perifacetal region compared with healthy controls (1.66 +/- 0.28 vs. 0.46 +/- 0.14 nmol/L, P = 0.007). No association between NO concentration and pain duration or pain level was detected. Patients with a positive response to local anesthetics and corticosteroid injection (defined as a >or=20 mm reduction of visual analogue scale at the 6-week follow-up visit) had higher NO concentrations than patients without positive response. CONCLUSIONS The study demonstrates that it is feasible and safe to measure NO with a real time-sensor in or around the facet joints. The findings of higher concentrations of NO in the perifacetal region in chronic low back patients compared with healthy controls indicate that the degenerative process of the joints in these patients may cause increased NO production. The observation of higher NO concentrations in the perifacetal region in patients responding to corticosteroid/local anesthetic infiltration indirectly suggest a more pronounced inflammatory process in these patients.
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Affiliation(s)
- Helena Brisby
- Department of Orthopaedic Surgery, St. George Hospital, UNSW, Sydney, Australia.
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Schütz TCB, Andersen ML, Tufik S. Effects of COX-2 inhibitor in temporomandibular joint acute inflammation. J Dent Res 2007; 86:475-9. [PMID: 17452571 DOI: 10.1177/154405910708600516] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Since it is recognized that cyclo-oxygenase-2 mediates nociception and the sleep-wake cycle as well, and that acute inflammation of the temporomandibular joint (TMJ) results in sleep disturbances, we hypothesized that cyclo-oxygenase-2 inhibitor would restore the sleep pattern in this inflammatory rat model. First, sleep was monitored after the injection of Freund's adjuvant (FA group) or saline (SHAM group) into the rats' temporomandibular joint. Second, etoricoxib was co-administered in these groups. The Freund's adjuvant group showed a reduction in sleep efficiency, in rapid eye movement (REM), and in non-REM sleep, and an increase in sleep and REM sleep latency when compared with the SHAM group, while etoricoxib substantially increased sleep quality in the Freund's adjuvant group. These parameters returned progressively to those found in the SHAM group. Etoricoxib improved the sleep parameters, suggesting the involvement of the cyclo-oxygenase-2 enzyme in acute inflammation of the TMJ, specifically in REM sleep.
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Affiliation(s)
- T C B Schütz
- Department of Psychobiology-Universidade Federal de São Paulo, Escola Paulista de Medicina (UNIFESP/EPM), Rua Napoleão de Barros, 925, Vila Clementino-SP-04024-002, São Paulo, SP, Brazil.
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Andersen ML, Perry JC, Antunes IB, Tufik S. Involvement of nitric oxide in cocaine-induced erections and ejaculations after paradoxical sleep deprivation. Prog Neuropsychopharmacol Biol Psychiatry 2007; 31:652-7. [PMID: 17276569 DOI: 10.1016/j.pnpbp.2006.12.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2006] [Revised: 12/14/2006] [Accepted: 12/16/2006] [Indexed: 11/19/2022]
Abstract
OBJECTIVES As nitric oxide (NO) is involved in penile erectile (PE) function and also influences the sleep-wake cycle, we speculated that NO could play a role in PE and ejaculation of paradonical sleep deprivation (PSD) rats. METHODS Animals were pretreated with N(G)-nitro-L-arginine methyl ester (L-NAME, ip) and L-arginine (ip and icv) prior to saline or cocaine injection. RESULTS Cocaine-induced PE in 90% of PSD rats, 60% of which ejaculated. L-NAME reduced the frequency of erection, but had no effect in the proportion of PSD-cocaine-injected rats displaying this response. L-NAME had no effect in saline groups. L-Arginine in PSD-saline rats reduced the proportion of animals displaying PE at the highest dose and reduced the frequency of PE at all doses in both saline and cocaine groups. The icv administration of L-arginine reduced PE only in PSD-cocaine rats. Results indicate that common to both drugs, whether it was NO synthase (NOS) inhibitor or NO precursor, was their capacity to strongly reduce PE frequency in cocaine-treated rats. Moreover, L-arginine (ip) played a relevant inhibitory role in the erection displayed by PSD rats. CONCLUSIONS Our findings suggest that the stimulating effects of PSD associated or not with cocaine on erection can be modified by alterations in the NO system.
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Affiliation(s)
- Monica L Andersen
- Department of Psychobiology - Universidade Federal de São Paulo, Escola Paulista de Medicina (UNIFESP/EPM), R. Napoleão de Barros, 925, V. Clementino 04024-002, São Paulo, SP, Brazil.
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Uğar-Cankal D, Ozmeric N. A multifaceted molecule, nitric oxide in oral and periodontal diseases. Clin Chim Acta 2006; 366:90-100. [PMID: 16387291 DOI: 10.1016/j.cca.2005.10.018] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2005] [Revised: 10/19/2005] [Accepted: 10/20/2005] [Indexed: 11/28/2022]
Abstract
Nitric oxide (NO) is a molecule with multiple effects on different tissues. NO takes important roles in vasodilatation, bacterial challenge and cytokine stimulation, regulation of mineralized tissue function, neurotransmission, and platelet aggregation, etc. However, under pathological conditions, NO has damaging effects. NO is synthesized by NO synthases (NOS) and inducible isoform of NOS (iNOS) is closely related to the pathophysiological characteristics of inflammatory diseases such as periodontal diseases. The expression of iNOS has been investigated in salivary gland-related diseases, temporomandibular joint disorders and oral cancer as well. The beneficial and damaging effects of NO in diseases related with periodontal, dental and maxillofacial area are discussed in this review. The biological pathways involved with NO and NO inhibitors may be good drug targets to have a role in the future management of patients with diseases in orofacial region.
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Affiliation(s)
- Dilek Uğar-Cankal
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Gazi University, Biskek caddesi 84.sokak 06510 Emek, Ankara, Turkey.
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