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Pain intensity and pressure pain thresholds after a light dynamic physical load in patients with chronic neck-shoulder pain. BMC Musculoskelet Disord 2020; 21:266. [PMID: 32326925 PMCID: PMC7181519 DOI: 10.1186/s12891-020-03298-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 04/17/2020] [Indexed: 12/31/2022] Open
Abstract
Background To investigate the development of pain intensity and pressure pain thresholds during and 24 h after a light dynamic physical load among patients with chronic neck-shoulder pain. Methods Twenty-six patients with chronic neck-shoulder pain and 12 healthy controls were included. The participants arm-cycled on an ergometer. Effort was rated with the Borg Rating of Perceived Exertion scale (RPE), and pain intensity with an numeric rating scale (NRS). Pressure pain thresholds were measured by an algometer. Participants started a pain diary 1 week before the physical exercise and continued until 1 week after. Pain intensity was assessed before, during and the following two evenings after arm-cycling. Pressure pain thresholds were assessed before, 15 min after, 105 min after and 24 h after. Results The chronic pain group showed increased pain intensity during, and the following two evenings after the arm cycling, and decreased pain thresholds immediately after the arm cycling involving painful regions. In the patient group there were no impact on pain thresholds in the neck the following day. Conclusions Patients with chronic neck-shoulder pain reported increased pain intensity during and in the evenings after a light dynamic load involving painful regions. In addition, they showed decreased pain thresholds close to the exercise, indicating mechanical hyperalgesia.
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Enzymatic Determination of Lactose and Galactose in Foods: NMKL Collaborative Methods Performance Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/80.3.584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Enzymes are widely used in food chemistry as analytical tools. An enzymatic method for determining lactose and galactose in foods was evaluated in an interlaboratory methods performance study by 12 laboratories in 4 countries. The method is based on enzymatic hydrolysis of lactose and enzymatic oxidation of the hydrolysis products. The exchange of the coenzyme in the second reaction is the basis of quantitation. The method may be used for various types of foods, such as liquid and solid milk products, meat products, cereal products, fats, dressings, sweets, chocolate, and foods for special dietary uses. It is also applicable to lactose-free foods but not to products in which lactose has been partially hydrolyzed enzymatically to glucose and galactose. Six commonly used foodstuffs with lactose concentrations ranging from 0.4 g/100 g to 40 g/100 g and galactose concentrations up to 0.7 g/100 g were analyzed: crisp rye bread, milk chocolate, sausage, cheese, margarine, and baby food containing milk powder. They were distributed to the 12 participants as 12 randomly numbered test samples, representing blind duplicates of the 6 materials. The relative standard deviations for reproducibility (RSDR) were between 2.3-11% for lactose and 6.8-50% for galactose.
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Percutaneous Treatment with a Mucopolysaccharide Polysulphate of Experimentally Induced Subcutaneous Haematomas in Man. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1661311] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryIn a double blind trial on ten healthy volunteers, the efficacy of a topically applied mucopolysaccharide polysulphate* in the treatment of subcutaneous haematomas was assessed. Standardized haematomas were induced by subcutaneous injection of a mixture of autogenous blood and 125I-fibrinogen. The absorption of the haematoma, expressed as the removal of the labelled fibrin(ogen), could thus be objectively measured by the decrease in radioactivity.The results show an exponential absorption of these haematomas. The absorption time was reduced to about half compared with placebo, when treated topically with mucopolysaccharide polysulphate. The difference is statistically highly significant and is also considered clinically relevant.
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Effectiveness of multidisciplinary programmes for clinical pain conditions: An umbrella review. J Rehabil Med 2018; 50:779-791. [DOI: 10.2340/16501977-2377] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Association of insomnia severity with well-being, quality of life and health care costs: A cross-sectional study in older adults with chronic pain (PainS65+). Eur J Pain 2017; 22:414-425. [PMID: 29034538 DOI: 10.1002/ejp.1130] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2017] [Indexed: 11/10/2022]
Abstract
BACKGROUND Insomnia is one of the most common complaints in chronic pain. This study aimed to evaluate the association of insomnia with well-being, quality of life and health care costs. METHODS The sample included 2790 older individuals (median age = 76; interquartile range [IQR] = 70-82) with chronic pain. The participants completed a postal survey assessing basic demographic data, pain intensity and frequency, height, weight, comorbidities, general well-being, quality of life and the insomnia severity index (ISI). Data on health care costs were calculated as costs per year (€ prices) and measured in terms of outpatient and inpatient care, pain drugs, total drugs and total health care costs. RESULTS The overall fraction of clinical insomnia was 24.6% (moderate clinical insomnia: 21.9% [95% CI: 18.8-23.3]; severe clinical insomnia: 2.7% [95% CI: 1.6-3.2]). Persons who reported clinical insomnia were more likely to experience pain more frequently with higher pain intensity compared to those reported no clinically significant insomnia. Mean total health care costs were € 8469 (95% CI: €4029-€14,271) for persons with severe insomnia compared with € 4345 (95% CI: €4033-€4694) for persons with no clinically significant insomnia. An association between severe insomnia, well-being, quality of life, outpatient care, total drugs costs and total health care costs remained after controlling for age, sex, pain intensity, frequency, body mass index and comorbidities using linear regression models. CONCLUSIONS Our results determine an independent association of insomnia with low health-related quality of life and increased health care costs in older adults with chronic pain. SIGNIFICANCE The concurrence and the severity of insomnia among older adults with chronic pain were associated with decreased well-being and quality of life, and increased health care costs to society.
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Illness beliefs among patients with chronic widespread pain - associations with self-reported health status, anxiety and depressive symptoms and impact of pain. BMC Psychol 2017; 5:24. [PMID: 28679446 PMCID: PMC5499007 DOI: 10.1186/s40359-017-0192-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 06/20/2017] [Indexed: 12/31/2022] Open
Abstract
Background Chronic widespread pain (CWP) is a disabling condition associated with a decrease in health. Illness beliefs are individual and are acquired during life. Constraining beliefs may prevent patients from regaining health. Understanding these patients’ illness beliefs may be a way to improve the health care they are offered. The aim of this study was to describe illness beliefs among patients with CWP and associations with self-reported health, anxiety and depressive symptoms, and impact of pain. Method In this cross-sectional study, questionnaires were sent by mail to 330 patients including socio-demographic information, the Illness Perception Questionnaire (IPQ-R), the Short-Form General Health Survey (SF-36) and the Hospital Anxiety and Depression Scale (HADS). Data were analysed using descriptive statistics, non-parametric tests and linear regression analyses. Results Patients experienced and related a high number of symptoms to CWP (mean (SD) 9 (3)). The patients believed their illness to be long lasting, to affect their emotional well being, and to have negative consequences for their lives. Some 72% reported having severe or very severe pain, and impact of pain according to SF-36 was negatively correlated to several illness beliefs dimensions, anxiety- and depressive symptoms. In regression analyses, the Identity, Consequences and Personal control dimensions of IPQ-R and Anxiety- and Depressive symptoms explained 32.6–56.1% of the variance in the two component scores of SF-36. Conclusion Constraining illness beliefs in patients with CWP are related to worse health status, especially in cases of high number of physical or mental symptoms, beliefs of negative consequences or the illness affecting them emotionally. Identification and understanding of these beliefs may reduce patients’ suffering if they are taken into consideration in rehabilitation programs and in development of new evidence-based interventions aimed at increasing health in patients with CWP.
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Different DHEA-S Levels and Response Patterns in Individuals with Chronic Neck Pain, Compared with a Pain Free Group-a Pilot Study. PAIN MEDICINE 2017; 18:846-855. [PMID: 27498549 DOI: 10.1093/pm/pnw162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Objective To test, in this pilot study, whether DHEA-S (Dehydroepiandrosterone, sulfated form) plasma levels are lower among persons with chronic neck pain, compared to control persons, and to investigate the DHEA-S response after a physical exercise. Subjects Included were 12 persons with chronic neck pain and eight controls without present pain, all 18 and 65 years of age. Exclusion criteria for both groups were articular diseases or tendinosis, fibromyalgia, systemic inflammatory and neuromuscular diseases, pain conditions due to trauma, or severe psychiatric diseases. Design and methods The participants arm-cycled on an ergometer for 30 minutes. Blood samples were taken before, 60 minutes, and 150 minutes after this standardized physical exercise. Results The estimated plasma DHEA-S levels at baseline were 2.0 µmol/L (95% confidence interval [CI] 1.00; 4.01) in the pain group and 4.1 µmol/L (95% CI2.0; 8.6) in the control group, adjusted for sex, age, body mass index (BMI), and Shirom-Melamed Burnout Questionnaire (SMBQ), with a ratio of 0.48 ( P = 0.094). Conclusions In this pilot study, the plasma DHEA-S levels appeared to be lower among the persons with chronic neck pain, compared with the control group. It was indicated that DHEA-S decreased during the physical exercise in the control group, and either increased or was unaffected in the chronic pain group.
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Prevalence of different pain categories based on pain spreading on the bodies of older adults in Sweden: a descriptive-level and multilevel association with demographics, comorbidities, medications, and certain lifestyle factors (PainS65+). J Pain Res 2016; 9:1131-1141. [PMID: 27942232 PMCID: PMC5138042 DOI: 10.2147/jpr.s119845] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background and objective There is limited knowledge about the prevalence of pain and its relation to comorbidities, medication, and certain lifestyle factors in older adults. To address this limitation, this cross-sectional study examined the spreading of pain on the body in a sample of 6611 subjects ≥65 years old (mean age = 75.0 years; standard deviation [SD] = 7.7) living in southeastern Sweden. Methods Sex, age, comorbidities, medication, nicotine, alcohol intake, and physical activity were analyzed in relation to the following pain categories: local pain (LP) (24.1%), regional pain medium (RP-Medium) (20.3%), regional pain heavy (RP-Heavy) (5.2%), and widespread pain (WSP) (1.7%). Results RP-Medium, RP-Heavy, and WSP were associated more strongly with women than with men (all p<0.01). RP-Heavy was less likely in the 80–84 and >85 age groups compared to the 65–69 age group (both p<0.01). Traumatic injuries, rheumatoid arthritis/osteoarthritis, and analgesics were associated with all pain categories (all p<0.001). An association with gastrointestinal disorders was found in LP, RP-Medium, and RP-Heavy (all p<0.01). Depressive disorders were associated with all pain categories, except for LP (all p<0.05). Disorders of the central nervous system were associated with both RP-Heavy and WSP (all p<0.05). Medication for peripheral vascular disorders was associated with RP-Medium (p<0.05), and hypnotics were associated with RP-Heavy (p<0.01). Conclusion More than 50% of older adults suffered from different pain spread categories. Women were more likely to experience greater spreading of pain than men. A noteworthy number of common comorbidities and medications were associated with increased likelihood of pain spread from LP to RP-Medium, RP-Heavy, and WSP. Effective management plans should consider these observed associations to improve functional deficiency and decrease spreading of pain-related disability in older adults.
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Abstract
Information is sparse concerning the incidence and prognosis of headache in children from the general population, especially of tension-type headache. In this study, headache diagnoses and symptoms were reassessed in 122 out of 130 schoolchildren after 3 years. Nearly 80± of those with headache at first evaluation still reported headache at follow-up. Although the likelihood of experiencing the same headache diagnosis and symptoms was high, about one-fifth of children with tension-type headache developed migraine and vice versa. Female gender predicted migraine and frequent headache episodes predicted overall headache at follow-up. The estimated average annual incidence was 81 and 65 per 1000 children, for tension-type headache and migraine, respectively. We conclude that there is a considerable risk of developing and maintaining headache during childhood. Headache diagnoses should be reassessed regularly and treatment adjusted. Girls and children with frequent headache have a poorer prognosis and therefore intervention is particularly important in these groups.
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Abstract
Enlarged mediastinal, retroperitoneal and pelvic lymph nodes are often difficult to differentiate from vascular structures. Contrast medium is therefore used to help to discriminate arteries and veins from lymph nodes. This study was undertaken to investigate the degree to which pathologic lymph nodes become enhanced after an intravenous bolus injection of contrast medium. Computed tomography was performed in 25 patients with enlargement of retroperitoneal lymph nodes due to primary lymphoproliferative disease or metastases. A dynamic sequence of a well delineated lymph node was obtained over a period of two minutes. Contrast enhancement was seen in all lymph nodes, but of varying degree. The enhancement was correlated to that observed in the inferior vena cava. Most examined lymph nodes showed slight or moderate enhancement, but in five instances strong enhancement, more than 75 per cent of that of the vena cava, was found. These nodes could possibly have been misinterpreted as blood vessels.
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Abstract
OBJECTIVES Raised serum cartilage oligomeric matrix protein (sCOMP) has been reported to predict erosive disease in early rheumatoid arthritis (RA). In juvenile idiopathic arthritis (JIA), subnormal sCOMP levels have been associated with ongoing inflammation and growth retardation. In this study we aimed to assess sCOMP, C-reactive protein (CRP), and insulin-like growth factor (IGF)-1 in children/adolescents with JIA and in referents. METHOD We enrolled 52 JIA patients at planned outpatient visits and 54 inpatients with ongoing infection ('infection referents'). A total of 120 referents testing negative for immunoglobulin (Ig)E-mediated allergy ('IgE referents') served as controls. All serum samples were analysed for COMP, IGF-1, and CRP. RESULTS The average sCOMP level was highest among the IgE referents and lowest among the infection referents. In the JIA patients, the level of sCOMP was not associated with the level of CRP or with clinical signs of disease activity. CONCLUSIONS The results of this study do not support routine clinical analysis of sCOMP levels in patients with JIA.
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FRI0048 Concentrations of Antibodies against Porphyromonas Gingivalis Are Increased before The Onset of Symptoms of Rheumatoid Arthritis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Prevalence of Different Pain Categories Based on Pain Spreading in Older Adults in Sweden: A Multilevel Association With Socio-Demographic Characteristics, Comorbidities and Drug Consumption (Pain S65+). Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.1845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
IntroductionUnderstanding of factors related to chronic pain in elderly is limited.Objectives and aimsTo estimate the prevalence of pain categories based on spreading of pain on the body and to investigate how such spreading is related to demographic variables, pain intensity, comorbidities and medication in an elderly general population in southeastern Sweden.MethodsA total of 6611 adults aged ≥ 65 years participated (mean age = 76.2; SD = 7.4). Pain categories were assessed by a self-reported postal questionnaire covering 45 anatomical predefined pain regions along with demographics, pain intensity during previous seven days, comorbidities and medication. Poisson regression models with robust error variance were used for data analyzing.ResultsThe prevalence of pain spreading categories was: chronic local pain (CLP) 16%; chronic regional pain medium (CRP-Medium) 17%; chronic regional pain heavy (CRP-Heavy) 5% and chronic widespread pain (CWSP) 2%. Overall, increased prevalence for CRP-Heavy and CWSP in subjects 75–79 years old compared to those 65–69, 70–74, 80–84 and ≥ 85 years were revealed. In men, 75–79 years old, CRP-Heavy was more common than in the other pain categories. In women, 75–79 years old CWSP, was more common than in the other pain categories. Pain intensity was strongly associated with all pain categories (P < 0.001). CLP was associated with trauma, rheumatoid arthritis, cancer, prescribed and non-prescribed analgesics. CRP-Medium was associated with rheumatoid arthritis, CRP-Heavy with rheumatoid arthritis and lung diseases and CWSP with rheumatoid arthritis and prescribed analgesics (P < 0.001).ConclusionsOur findings elucidate heterogeneity of pain in elderly which has to be further investigated.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Accumulation of substances with melanin affinity to the internal ear. Therapeutic or ototoxic mechanism? Adv Otorhinolaryngol 2015; 25:17-25. [PMID: 484349 DOI: 10.1159/000402912] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The capacity of the melanin in the internal ear to accumulate and retain labelled lidocaine, bupivacaine and chlorpromazine after intravenous and intraperitoneal injection was examined by whole-body autoradiography. Both young pigmented hooded rats and albino rats were studied. In the pigmented rats chlorpromazine showed the greatest accumulation, which was more pronounced in the cochlea than in the vestibular portion. The other two substances were evenly distributed in the internal ear. After a single injection of chlorpromazine and of bupivacaine these substances were still bound to the melanin of the internal ear after 14 days, which was the longest survival time. Lidocaine, on the other hand, had disappeared after only 4 days. In albino animals there was very weak, transient uptake of chlorpromazine and bupivacaine, but not of lidocaine, in the internal ear. In studies in vitro on isolated bovine eye melanin there was considerably greater adsorption of chlorpromazine than of lidocaine and bupivacaine.
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The safety and tolerability of oral AZD5069, a selective CXCR2 antagonist, in patients with moderate-to-severe COPD. Pulm Pharmacol Ther 2015; 31:36-41. [DOI: 10.1016/j.pupt.2015.02.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 01/28/2015] [Accepted: 02/02/2015] [Indexed: 02/05/2023]
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Intramuscular pain modulatory substances before and after exercise in women with chronic neck pain. Eur J Pain 2014; 19:1075-85. [DOI: 10.1002/ejp.630] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2014] [Indexed: 12/14/2022]
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Comparative metabolomics of muscle interstitium fluid in human trapezius myalgia: an in vivo microdialysis study. Eur J Appl Physiol 2014; 113:2977-89. [PMID: 24078209 PMCID: PMC3828502 DOI: 10.1007/s00421-013-2716-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 08/23/2013] [Indexed: 02/02/2023]
Abstract
Purpose The mechanisms behind trapezius myalgia are unclear. Many hypotheses have been presented suggesting an altered metabolism in the muscle. Here, muscle microdialysate from healthy and myalgic muscle is analysed using metabolomics. Metabolomics analyse a vast number of metabolites, enabling a comprehensive explorative screening of the cellular processes in the muscle. Methods Microdialysate samples were obtained from the shoulder muscle of healthy and myalgic subjects that performed a work and stress test. Samples from the baseline period and from the recovery period were analysed using gas chromatography—mass spectrometry (GC–MS) together with multivariate analysis to detect differences in extracellular content of metabolites between groups. Systematic differences in metabolites between groups were identified using multivariate analysis and orthogonal partial least square discriminate analysis (OPLS-DA). A complementary Mann–Whitney U test of group difference in individual metabolites was also performed. Results A large number of metabolites were detected and identified in this screening study. At baseline, no systematic differences between groups were observed according to the OPLS-DA. However, two metabolites, l-leucine and pyroglutamic acid, were significantly more abundant in the myalgic muscle compared to the healthy muscle. In the recovery period, systematic difference in metabolites between the groups was observed according to the OPLS-DA. The groups differed in amino acids, fatty acids and carbohydrates. Myristic acid and putrescine were significantly more abundant and beta-d-glucopyranose was significantly less abundant in the myalgic muscle. Conclusion This study provides important information regarding the metabolite content, thereby presenting new clues regarding the pathophysiology of the myalgic muscle.
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Effect of High Energy Protons on the Spinal Cord. Acta Radiol 2013. [DOI: 10.1177/028418515905100106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Effects of Single Dose Proton Irradiation of Normal Skin and Vx2 Carcinoma in Rabbit Ears: A Comparative Investigation with Protons and Roentgen Rays. Acta Radiol 2013. [DOI: 10.1177/028418515905200304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Lesions in the Depth of the Brain Produced by a Beam of High Energy Protons. Acta Radiol 2013. [DOI: 10.1177/028418516005400402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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“Effects of Tactile Touch on pain, sleep and health related quality of life in Parkinson's disease with chronic pain”: A randomized, controlled and prospective study. Eur J Integr Med 2013. [DOI: 10.1016/j.eujim.2012.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Experimental myalgia induced by repeated infusion of acidic saline into the human masseter muscle does not cause the release of algesic substances. Eur J Pain 2012; 17:539-50. [PMID: 23132643 DOI: 10.1002/j.1532-2149.2012.00216.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/25/2012] [Indexed: 11/12/2022]
Abstract
BACKGROUND Animal studies have shown that two repeated intramuscular injections of acidic saline induce mechanical allodynia that lasts for 4 weeks with spread to the contralateral side. In this study, we tested the hypothesis that two repeated intramuscular infusions of acidic saline into the human masseter muscle is associated with pain, mechanical allodynia and release of algesic substances. Eighteen healthy volunteers participated. On day 1, 2.5 mL of acidic saline (pH 3.3) was infused into one of the masseter muscles and isotonic saline (pH 6.0) into the other (randomized and single-blind). Two days later, intramuscular microdialysis was performed to sample serotonin, glutamate, pyruvate, lactate and glucose, during which the saline infusions were repeated. Pain and pressure pain thresholds (PPTs) were recorded before and after infusions on both days. RESULTS Pain intensity induced by the infusions was higher after acidic than that after isotonic saline (p < 0.05). PPTs were decreased on both sides after microdialysis compared with baseline day 1 (p's < 0.05), but there were no differences in PPTs between sides at any time point. The levels of serotonin, glutamate, pyruvate, lactate or glucose did not change significantly during microdialysis. CONCLUSION Infusion of acidic saline caused low levels of muscle pain, but no mechanical allodynia and no increased release of algesic substances. The value of this model appears modest, but future studies could be performed with larger sample size and higher flow rate before definite conclusions about the validity of the model for craniofacial myalgia can be drawn.
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A systematic review of risk factors associated with transitioning from regional musculoskeletal pain to chronic widespread pain. Eur J Pain 2012; 16:1084-93. [DOI: 10.1002/j.1532-2149.2012.00117.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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S652 THE EFFECTS OF TWO DIFFERENT HOME-EXERCISE PROGRAMMES ON WOMEN SUFFERING LONG-TERM NECK MUSCLE PAIN. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/s1754-3207(11)70982-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Effect of infancy-onset dietary intervention on salivary cholesterol of children: a randomized controlled trial. J Dent Res 2011; 90:868-73. [PMID: 21474838 DOI: 10.1177/0022034511405328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
This study investigated salivary cholesterol of children from 6 to 16 years of age in response to dietary intervention. One thousand sixty-two infants started in the prospective, randomized project. At 3 years of age, every fifth child was invited into the study (n=178). Of these, 148 enrolled, and 86 completed the oral sub-study at 16 years of age. The intervention aimed at restricting the child's saturated fat and cholesterol intake. Control children received no special recommendations. Every third year, paraffin-stimulated saliva samples (10.0 mL) were collected for cholesterol assays. Nutrient intakes and serum total cholesterol concentrations were regularly followed up by means of 4-day food records and blood samples. Intake of saturated fatty acids (SAFA) was lower in the intervention than in the control group (p<0.001). Salivary cholesterol concentration increased from 1.9 (±1.1) µmol/L at 6 years of age to 16.0 (±9.0) µmol/L at 16 years of age. The increase was smaller in the intervention than in the control group (p<0.001). The ratios of salivary to serum cholesterol concentrations tended to be higher in boys than in girls (p=0.07). Thus, dietary intervention was reflected in children's salivary cholesterol values more sensitively than in serum cholesterol values. (clinicaltrials.gov NCT00223600).
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Effects of resistance training on endurance capacity and muscle fiber composition in young top-level cyclists. Scand J Med Sci Sports 2011; 21:e298-307. [PMID: 21362056 DOI: 10.1111/j.1600-0838.2010.01283.x] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Equivocal findings exist on the effect of concurrent strength (S) and endurance (E) training on endurance performance and muscle morphology. Further, the influence of concurrent SE training on muscle fiber-type composition, vascularization and endurance capacity remains unknown in top-level endurance athletes. The present study examined the effect of 16 weeks of concurrent SE training on maximal muscle strength (MVC), contractile rate of force development (RFD), muscle fiber morphology and composition, capillarization, aerobic power (VO2max), cycling economy (CE) and long/short-term endurance capacity in young elite competitive cyclists (n=14). MVC and RFD increased 12-20% with SE (P<0.01) but not E. VO2max remained unchanged. CE improved in E to reach values seen in SE. Short-term (5-min) endurance performance increased (3-4%) after SE and E (P<0.05), whereas 45-min endurance capacity increased (8%) with SE only (P<0.05). Type IIA fiber proportions increased and type IIX proportions decreased after SE training (P<0.05) with no change in E. Muscle fiber area and capillarization remained unchanged. In conclusion, concurrent strength/endurance training in young elite competitive cyclists led to an improved 45-min time-trial endurance capacity that was accompanied by an increased proportion of type IIA muscle fibers and gains in MVC and RFD, while capillarization remained unaffected.
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290 DETERMINATION OF SEROTONIN IN MICRODIALYSATE FROM MYALGIC HUMAN TRAPEZIUS MUSCLE DURING REPETITIVE LOW‐FORCE WORK AND MENTAL STRESS. Eur J Pain 2009. [DOI: 10.1016/s1090-3801(09)60293-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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168 N‐ACYLETHANOLAMINES IN MICRODIALYSATE FROM MYALGIC HUMAN TRAPEZIUS MUSCLE. Eur J Pain 2009. [DOI: 10.1016/s1090-3801(09)60171-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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347 MUSCLE ACTIVITY AND AUTONOMIC RESPONSES IN WOMEN WITH CHRONIC TRAPEZIUS MYALGIA. Eur J Pain 2009. [DOI: 10.1016/s1090-3801(09)60350-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Changes in blood flow through the thymus in steroid-treated guinea-pigs with calculation of thymic export and import of lymphocytes. ACTA PATHOLOGICA ET MICROBIOLOGICA SCANDINAVICA 2009; 70:385-9. [PMID: 6083384 DOI: 10.1111/j.1699-0463.1967.tb01306.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Export and import of lymphocytes in the thymus during steroid-induced involution and regeneration. ACTA PATHOLOGICA ET MICROBIOLOGICA SCANDINAVICA 2009; 70:371-84. [PMID: 6083383 DOI: 10.1111/j.1699-0463.1967.tb01305.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Influence of different antigens on circulating lymphocyte populations. ACTA PATHOLOGICA ET MICROBIOLOGICA SCANDINAVICA 2009; 70:549-60. [PMID: 4867351 DOI: 10.1111/j.1699-0463.1967.tb01324.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Export and import of 3H-thymidine-labelled lymphocytes in the thymus of normal and steroid-treated guinea-pigs. ACTA PATHOLOGICA ET MICROBIOLOGICA SCANDINAVICA 2009; 70:390-7. [PMID: 6083385 DOI: 10.1111/j.1699-0463.1967.tb01307.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Determination of thymic blood flow in guinea-pigs of different ages. ACTA PATHOLOGICA ET MICROBIOLOGICA SCANDINAVICA. SECTION A, PATHOLOGY 2009; 78:366-7. [PMID: 5507263 DOI: 10.1111/j.1699-0463.1970.tb03314.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Regional obesity as a health hazard in men--prospective studies. ACTA MEDICA SCANDINAVICA. SUPPLEMENTUM 2009; 723:45-51. [PMID: 3164974 DOI: 10.1111/j.0954-6820.1987.tb05927.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Cross-sectional studies have shown that a central distribution of adipose tissue is associated with increased risk of metabolic complications and cardiovascular morbidity. Four prospective studies in men are reviewed and they consistently indicate that central adipose tissue distribution is a risk factor for coronary heart disease (CHD) and its predictive contribution seems almost to be in the same order as for the major risk factors for CHD. In one study there is an indication of decreasing predictive power of central adipose tissue distribution for CHD with increasing age. Abdominal adipose tissue distribution is also a risk factor for stroke, diabetes and sickness absenteeism, and for all cause mortality. It seems, however, not to be a predictor of degree of well-being in general. The question of causality is not solved but indices of adipose tissue distribution should be included in future observational and experimental studies in this field.
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Abstract
Body fat, body cell mass, fasting blood sugar, glucose tolerance and fasting insulin have been determined in 106 hypertensive males aged 47-54years and in 41 normotensive 50-year-old males. Both groups were derived from screening examinations in random population samples. The hypertensive subjects were more often obese and had more often an impaired glucose tolerance and a higher fasting insulin compared with the normotensive subjects. The metabolic differences were not explained simply by the higher degree of obesity in the hypertensive subjects, as the differences remained when the hypertensive subjects were matched for body fat with normotensive controls. The impaired glucose metabolism demonstrated quantitatively in an unselected group of hypertensive subjects, might be one of the factors explaining the variable prognosis in hypertensive subjects.
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Abstract
A cross-sectional analysis of characteristics possibly associated with congestive heart failure (CHF) was performed among 644 men, all 67 years of age and randomly selected from the general population. A total of 13% had symptoms and signs of overt CHF. Another 10% had early or "latent" CHF. Among overt CHF cases, 46% had hypertension, 55% coronary heart disease and 79% any one of these conditions. Among "latent" CHF cases, the corresponding proportions were 52%, 25% and 65%. Simple indices of left ventricular diastolic function and filling pressure as well as of pulmonary artery pressure were closer related to the CHF stage, than were measures of systolic left ventricular function. Smoking habits, hypertension, blood lipids, weight and other measures of body fat, blood glucose, and serum insulin were all correlated to CHF stage. In a multivariate analysis, smoking habits, hypertension, body weight, and serum insulin were independently and significantly correlated to CHF stage.
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Thymus-derived lymphocytes in blood, lymph and lymphoid organs after intrathymic labelling with 3 H-thymidine. SCANDINAVIAN JOURNAL OF HAEMATOLOGY 2009; 8:141-50. [PMID: 5094955 DOI: 10.1111/j.1600-0609.1971.tb01965.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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When Young Children have Conduct Problems - Who are the Nonresponders after Parent Training? Eur Psychiatry 2009. [DOI: 10.1016/s0924-9338(09)71275-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Although most parent training programs produce positive effects, about one third of the children still show conduct problems at clinical levels after treatment.In the present study, predictors and mediators of treatment non-response among children aged 4-8 years were investigated one-year after treatment with the Incredible Years parent training program (PT), or combined parent training and child treatment (PT+CT) in a randomized controlled trial. the study was conducted in two university cities in Norway.KIDDIE-SADS, Eyberg Child Behavior Inventory (ECBI), Child Behavior Checklist (CBCL), Parent Practices Interview (PPI), Parent Stress Index (PSI), Preschool Behavior Questionnaire (PBQ), Teacher Report Form (TRF), were used.Before treatment all children fulfilled the criteria for an ODD diagnosis or a sub-threshold diagnosis. at the one-year follow-up 33 % of the treated children still showed such a diagnosis, and they were defined as treatment non-responders.Both family and child variables predicted treatment non-response at the one-year follow-up, although being involved with the child protection services was found to be the strongest predictor in multivariate analysis. Pretreatment child characteristics predicting treatment non-response at the one-year follow-up were high levels of child internalizing and aggression problems as reported by mothers. Further, mothers of children still showing a ODD diagnosis at the one-year follow-up, reported less change in negative parenting practices as compared to mothers of treatment responders.
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Responses of algesic and metabolic substances to 8 h of repetitive manual work in myalgic human trapezius muscle. Pain 2008; 140:479-490. [PMID: 19006649 DOI: 10.1016/j.pain.2008.10.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2008] [Revised: 09/15/2008] [Accepted: 10/06/2008] [Indexed: 11/29/2022]
Abstract
The trapezius muscle often develops pain as the result of repetitive and stressful work tasks although it is unclear to what extent this pain is due to alterations in muscle concentrations of algesic/nociceptive substances. Twenty women with chronic neck- and shoulder pain (TM) whose work required highly repetitive work tasks and 20 pain-free female colleagues (CON) were studied during and after a full 8-hour workday. We collected microdialysates from their dominant/most painful trapezius muscle; concentrations of serotonin, glutamate, lactate, pyruvate, potassium, bradykinin, and cytokines and blood flow were determined. In addition, we measured surface electromyogram, task exposure level, pain intensity, perceived mental stress, and urine-cortisol. In connection to the clinical neck and shoulder examination, we determined pressure pain thresholds (PPTs) over the trapezius and tibialis muscles. TM had higher concentrations of glutamate (71+/-42 vs. 36+/-15 micromol l(-1)) and pyruvate (187+/-89 vs. 125+/-63 micromol l(-1)) than CON. Interstitial serotonin was higher in TM (before work: 10.6+/-10.8 vs. 2.2+/-1.2 nM; after work: 9.2+/-8.3 vs. 1.5+/-2.9 nM). The trapezius blood flow during the working day was higher in TM than in CON. TM had lower PPT and higher pain intensity throughout the working day. No differences in EMG, task exposure level, mental stress, or urine-cortisol in the groups were found. These findings support the idea that peripheral nociceptive processes are activated in occupationally active subjects, who are diagnosed with trapezius myalgia. In contrast, no sign of low blood flow or increased stress or muscle activity markers were found in TM.
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Effect of eight weeks of endurance exercise training on right and left ventricular volume and mass in untrained obese subjects: a longitudinal MRI study. Scand J Med Sci Sports 2008; 18:354-9. [DOI: 10.1111/j.1600-0838.2007.00706.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Prevalence of asthma-like symptoms, asthma and its treatment in elite athletes. Scand J Med Sci Sports 2008; 19:174-8. [PMID: 18282226 DOI: 10.1111/j.1600-0838.2007.00753.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The objective was to determine the prevalence of asthma-like symptoms and asthma and the use of asthma medication in Danish elite athletes. A cross-sectional questionnaire survey of Danish elite athletes was conducted in 2006. All elite athletes (N=418) financially supported by the national organization of elite athletes comprised the study group; 329 (79%) completed the questionnaire concerning their sport, asthma-like symptoms, asthma and use of asthma medication. Asthma-like symptoms at rest were reported by 41% of respondents; 55% reported asthma-like symptoms at rest or at exercise. Physician-diagnosed asthma was present in 16% and 14% had current asthma. Asthma medication was taken by 7% of the athletes, of whom 79% used inhaled corticosteroids and 21% used inhaled beta(2)-agonists only. Athletes participating in endurance sports had higher prevalences of current asthma (24%) and use of asthma medication (15%) than all other athletes (P<0.01). Athletes participating in endurance sports have a higher prevalence of asthma and use of asthma medication. The frequency of asthma medication is lower than the prevalence of current asthma indicating that there is no overuse of asthma medication among Danish elite athletes.
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Relationship between embryo development in vitro and 56-day nonreturn rates of cows inseminated with frozen-thawed semen from dairy bulls. Theriogenology 2007; 48:221-31. [PMID: 16728121 DOI: 10.1016/s0093-691x(97)84069-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/1996] [Accepted: 04/10/1997] [Indexed: 11/22/2022]
Abstract
Frozen-thawed bull semen with > 50% post-thaw motility from 40 batches (21 bulls, 2 consecutive ejaculates per batch) was used for fertilization (IVF) and embryo development in vitro to assess the relationship between field and laboratory fertility using a retrospective approach. Each frozen batch was tested in 3 or 4 replicates with 30 oocytes per replicate. Field fertility, quantified as the 56-d nonreturn rate and based on 89 to 441 artificial inseminations per frozen batch, ranged between 46.2 and 74.8%. The cleavage and blastocyst rates after IVF varied from 29.0 to 81.9% and from 1.8 to 32.0%, respectively, with significant differences among frozen batches. Rates of cleavage and blastocyst formation were significantly related to the nonreturn rate (r = 0.59, P < 0.001; r = 0.35, P < 0.05, respectively). The interaction between cleavage and blastocyst rate was 0.69 (P < 0.001). Significant variations (P < 0.05) among frozen semen batches within 15 bulls with >/= 2 different semen batches were found for the nonreturn rate (13.3%) of 2 bulls, for cleavage rates (26.7%) in 4 bulls and for blastocyst rates (20.0%) in 3 bulls. Significant differences (P < 0.05) among replicates within the 40 frozen semen batches were only found in 3 batches (7.5%) for the cleavage rate and in 7 batches (17.5%) for blastocyst rate. Overall, bull and frozen semen batch were the greatest sources of variation in the cleavage rate (30.6 and 29.4%, respectively), while testing date was the greatest source of variation in the blastocyst development rate (21.7%). The results indicated that in vitro fertilization and, to a lesser extent, culture to the blastocyst stage could be useful in estimating the potential fertilizing ability of frozen-thawed semen from dairy bulls.
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