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Danielsen AV, Andreasen JJ, Dinesen B, Hansen J, Petersen KK, Duch KS, Bisgaard J, Simonsen C, Arendt-Nielsen L. Pain trajectories and neuropathic pain symptoms following lung cancer surgery: A prospective cohort study. Eur J Pain 2024. [PMID: 38528589 DOI: 10.1002/ejp.2265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 01/26/2024] [Accepted: 03/05/2024] [Indexed: 03/27/2024]
Abstract
BACKGROUND Persistent postsurgical pain (PPSP) after lung cancer surgery is common and current definitions are based on evaluations at a single time point after surgery. Pain intensity and symptoms may however fluctuate and change over time, and be impacted by multiple and shifting factors. Studies of postoperative recovery patterns and transition from acute to chronic pain are needed for further investigation of preventive measures and treatments to modify unfavourable recovery paths. METHODS In this explorative study, 85 patients undergoing surgery due to either presumptive or confirmed lung cancer reported pain intensities bi-monthly for 12 months. Pain trajectories during recovery were investigated, using group-based trajectory modelling. Associations with possible risk factors for PPSP, including clinical variables and anxiety and depression score (HADS), were also explored. RESULTS A trajectory model containing three 12-month pain recovery groups was computed. One group without PPSP fully recovered (50%) within two to three months. Another group with mild-intensity PPSP followed a protracted recovery trajectory (37%), while incomplete recovery was observed in the last group (13%). Acute postoperative pain and younger age were associated with a less favourable recovery trajectory. More neuropathic pain symptoms were observed in patients with incomplete recovery. CONCLUSIONS Three clinically relevant recovery trajectories were identified, based on comprehensive pain tracking. Higher acute postoperative pain intensity was associated with an unfavourable pain recovery trajectory. SIGNIFICANCE STATEMENT Understanding the transition from acute to chronic postoperative pain and identifying preoperative risk factors is essential for the development of targeted treatments and the implementation of preventive measures. This study (1) identified distinct recovery trajectories based on frequent pain assessment follow-ups for 12 months after surgery and (2) evaluated risk factors for unfavourable postoperative pain recovery paths. Findings suggest that early higher postoperative pain intensity is associated with an unfavourable long-term recovery path.
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Affiliation(s)
- A V Danielsen
- Department of Cardiothoracic Surgery, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - J J Andreasen
- Department of Cardiothoracic Surgery, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - B Dinesen
- Laboratory of Welfare Technologies - Digital Health & Rehabilitation, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - J Hansen
- CardioTech Research Group, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - K K Petersen
- Center Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - K S Duch
- Research Data and Biostatistics, Aalborg University Hospital, Aalborg, Denmark
| | - J Bisgaard
- Department of Anesthesiology and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - C Simonsen
- Department of Cardiothoracic Surgery, Aalborg University Hospital, Aalborg, Denmark
| | - L Arendt-Nielsen
- Center Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
- Steno Diabetes Center, Aalborg University Hospital, Aalborg, Denmark
- Department of Gastroenterology & Hepatology, Mech-Sense, Clinical Institute, Aalborg University Hospital, Aalborg, Denmark
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2
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Vela J, Dreyer L, Petersen KK, Arendt-Nielsen L, Duch KS, Amris K, Kristensen S. Quantitative sensory testing, psychological profiles and clinical pain in patients with psoriatic arthritis and hand osteoarthritis experiencing pain of at least moderate intensity. Eur J Pain 2024; 28:310-321. [PMID: 37712295 DOI: 10.1002/ejp.2183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 08/20/2023] [Accepted: 08/27/2023] [Indexed: 09/16/2023]
Abstract
BACKGROUND Chronic pain is the hallmark symptom of joint diseases. This study examined the differences in quantitative sensory testing between patients with psoriatic arthritis (PsA), hand osteoarthritis (hand-OA) and a pain-free control group and differences between patients with and without concomitant fibromyalgia (cFM). METHODS All patients and pain-free controls were assessed using pressure pain thresholds (PPT), temporal summation of pain (TSP), conditioned pain modulation (CPM) and clinical pain intensities. Psychological distress was assessed with the Hospital Anxiety and Depression Scale, Pain Catastrophizing Scale, and Pittsburgh Sleep Quality Index. Disability was assessed with the Health Assessment Questionnaire and pain quality with the painDETECT questionnaire. cFM was identified using the revised 2016 American College of Rheumatology diagnostic criteria. RESULTS Patients with hand-OA (n = 75) or PsA (n = 58) had statistically significant lower PPTs and CPM, greater TSP, and higher scores of psychological distress (p < 0.05) than controls (n = 20). Patients with cFM (58%) had higher scores of depression (p = 0.001), anxiety (p = 0.004), catastrophizing (p = 0.012), disability (p < 0.001), higher painDETECT score (p = 0.001), TSP (p = 0.027), and reduced sleep quality (p = 0.021) when compared to patients without cFM. CONCLUSION Patients with hand-OA and PsA exhibited signs of pain sensitization and a higher degree of psychological distress and disability than pain-free individuals. Patients with cFM had greater TSP, painDETECT score, disability, catastrophizing, and reduced sleep quality, than patients without, indicating greater degree of pain sensitization, psychological burden, and disability. STATEMENT OF SIGNIFICANCE This paper shows that a significant proportion of patients with hand osteoarthritis and psoriatic arthritis with moderate pain intensity have significantly increased signs of pain sensitization and markers of psychological distress. A large proportion of these patients fulfil the criteria for concomitant fibromyalgia and these patients show even greater propensity towards pain sensitization and psychological distress.
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Affiliation(s)
- J Vela
- Center of Rheumatic Research Aalborg (CERRA), Department of Rheumatology, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - L Dreyer
- Center of Rheumatic Research Aalborg (CERRA), Department of Rheumatology, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - K K Petersen
- Centre for Neuroplasticity and Pain, SMI, School of Medicine, Aalborg University, Aalborg, Denmark
- Center for Mathematical Modelling of Knee Osteoarthritis, Department of Materials and Production, Aalborg University, Aalborg, Denmark
| | - L Arendt-Nielsen
- Centre for Neuroplasticity and Pain, SMI, School of Medicine, Aalborg University, Aalborg, Denmark
- Department of Gastroenterology & Hepatology, Mech-Sense, Aalborg University Hospital, Aalborg, Denmark
| | - K Skjaerbaek Duch
- Center of Rheumatic Research Aalborg (CERRA), Department of Rheumatology, Aalborg University Hospital, Aalborg, Denmark
- Unit of Clinical Biostatistics, Aalborg University Hospital, Aalborg, Denmark
| | - K Amris
- Parker Institute, Copenhagen University Hospital, Frederiksberg, Denmark
| | - S Kristensen
- Center of Rheumatic Research Aalborg (CERRA), Department of Rheumatology, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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3
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Hertel E, McPhee ME, Petersen KK. Investigation of pain sensitivity following 3 nights of disrupted sleep in healthy individuals. Eur J Pain 2023. [PMID: 36862019 DOI: 10.1002/ejp.2101] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/02/2023] [Accepted: 02/28/2023] [Indexed: 03/03/2023]
Abstract
BACKGROUND Poor quality sleep is a common complaint among people with chronic pain. The co-occurrence of poor sleep quality and chronic pain often comes with increased pain intensity, more disability and a higher cost of healthcare. Poor sleep has been suggested to affect measures of peripheral and central pain mechanisms. To date, sleep provocations are the only models proven to affect measures of central pain mechanisms in healthy subjects. However, there are limited studies investigating the effect of several nights of sleep disruption on measures of central pain mechanisms. METHODS The current study implemented three nights of sleep disruption with three planned awakenings per night in 30 healthy subjects sleeping at home. Pain testing was conducted at the same time of day at baseline and follow-up for each subject. Pressure pain thresholds were assessed bilaterally on the infraspinatus and gastrocnemius muscles. Using handheld pressure algometry, suprathreshold pressure pain sensitivity and area were also investigated on the dominant infraspinatus muscle. Cuff-pressure pain detection and tolerance thresholds, temporal summation of pain and conditioned pain modulation were investigated using cuff-pressure algometry. RESULTS Temporal summation of pain was significantly facilitated (p = 0.022), suprathreshold pain areas (p = 0.005) and intensities (p < 0.05) were significantly increased, and all pressure pain thresholds were decreased (p < 0.005) after sleep disruption compared to baseline. CONCLUSIONS The current study found that three consecutive nights of sleep disruption at home induced pressure hyperalgesia and increased measures of pain facilitation in healthy subjects, which is consistent with previous findings. SIGNIFICANCE Poor quality of sleep is often experienced by patients with chronic pain, with the most common complaint being nightly awakenings. This exploratory study is the first to investigate changes in measures of central and peripheral pain sensitivity in healthy subjects after sleep disruptions for three consecutive nights without any restrictions on total sleep time. The findings suggest that disruptions to sleep continuity in healthy individuals can induce increased sensitivity to measures of central and peripheral pain sensitization.
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Affiliation(s)
- E Hertel
- Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Mathemathical Modeling of Knee Osteoarthritis (MathKOA), Aalborg University, Aalborg, Denmark
| | - M E McPhee
- Center for Neuroplasticity and Pain (CNAP), Aalborg University, Aalborg, Denmark
| | - K K Petersen
- Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Mathemathical Modeling of Knee Osteoarthritis (MathKOA), Aalborg University, Aalborg, Denmark.,Center for Neuroplasticity and Pain (CNAP), Aalborg University, Aalborg, Denmark
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Petersen KK, Ezzati A, Lipton RB, Gordon BA, Hassenstab J, Morris JC, Grober E. Associations of Stages of Objective Memory Impairment with Cerebrospinal Fluid and Neuroimaging Biomarkers of Alzheimer's Disease. J Prev Alzheimers Dis 2023; 10:112-119. [PMID: 36641615 PMCID: PMC9841119 DOI: 10.14283/jpad.2022.98] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
OBJECTIVE To investigate cerebrospinal fluid (CSF) and neuroimaging correlates of Stages of Objective Memory Impairment (SOMI) based on Free and Cued Selective Reminding Test (FCSRT) performance, and to evaluate the effect of APOE ε4 status on this relationship. METHODS Data from 586 cognitively unimpaired individuals who had FCSRT, CSF, and volumetric magnetic resonance imaging (MRI) measures available was used. We compared CSF measures of β-amyloid (Aβ42/Aβ40 ratio), phosphorylated tau (p-Tau181), total tau (t-Tau), hippocampal volume, and PIB-PET mean cortical binding potential with partial volume correction (MCBP) among SOMI groups in the whole sample and in subsamples stratified by APOE ε4 status. RESULTS Participants had a mean age of 67.4 (SD=9.1) years, had 16.1 (SD=2.6) years of education, 57.0% were female, and 33.8% were APOE ε4 positive. In the entire sample, there was no significant difference between SOMI stages in Aβ42/Aβ40 ratio, p-Tau181, t-Tau, or PIB-PET MCBP when adjusted for age, sex, and education. However, higher SOMI stages had smaller hippocampal volume (F=3.29, p=0.020). In the stratified sample based on APOE ε4 status, in APOE ε4 positive individuals, higher SOMI stages had higher p-Tau181 (F=2.94, p=0.034) higher t-Tau (F=3.41, p=0.019), and smaller hippocampal volume (F=5.78, p<0.001). There were no significant differences in CSF or imaging biomarkers between SOMI groups in the APOE ε4 negative subsample. CONCLUSION Cognitively normal older individuals with higher SOMI stages have higher in-vivo tau and neurodegenerative pathology only in APOE ε4 carriers. These original results indicate the potential usefulness of the SOMI staging system in assessing of tau and neurodegenerative pathology.
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Affiliation(s)
- K K Petersen
- Kellen K. Petersen, Albert Einstein College of Medicine, 1225 Morris Park Avenue, Bronx, NY 10461, USA,
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He Y, Manon-Jensen T, Arendt-Nielsen L, Petersen KK, Christiansen T, Samuels J, Abramson S, Karsdal MA, Attur M, Bay-Jensen AC. Potential diagnostic value of a type X collagen neo-epitope biomarker for knee osteoarthritis. Osteoarthritis Cartilage 2019; 27:611-620. [PMID: 30654118 DOI: 10.1016/j.joca.2019.01.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 11/20/2018] [Accepted: 01/07/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Phenotypic changes of chondrocytes toward hypertrophy might be fundamental in the pathogenesis of osteoarthritis (OA), of which type X collagen (Col10) is a well-known marker. The purpose was to develop a specific immunoassay for blood quantification of a newly identified neo-epitope of type Col10 to assess its diagnostic value for radiographic knee OA. METHODS A neo-epitope of Col10 was identified in urine samples from OA patients. A monoclonal antibody against the neo-epitope was produced in Balb/C mice. The enzyme responsible for the cleavage was identified. Immunohistochemical detection of this neo-epitope was performed on human OA cartilage. An immunoassay (Col10neo) was developed and quantified in two clinical studies: the C4Pain-003 and the NYU OA progression study. Receiver operating characteristic curve (ROC) curve analysis was carried out to evaluate the discriminative power of Col10neo between OA and rheumatoid arthritis (RA). RESULTS A neo-epitope specific mAb was produced. The Cathepsin K-generated neo-epitope was localized to the pericellular matrix of chondrocytes, while its presence was extended and more prominent in superficial fibrillation in the cartilage with advanced degradation. In the C4Pain study, a higher level of Col10neo was seen in subjects with greater KL grade. The group of the highest tertile of Col10neo included more subjects with KL3-4. In the NYU study, Col10neo was statistically higher in OA than control or RA. ROC curve analysis revealed area under the curve was 0.88 (95% CI 0.81-0.94). CONCLUSION Our findings indicate that Col10neo linked to hypertrophic chondrocytes could be used as a diagnostic biochemical marker for knee OA.
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Affiliation(s)
- Y He
- Rheumatology, Biomarkers and Research, Nordic Bioscience, Herlev, Denmark.
| | - T Manon-Jensen
- Rheumatology, Biomarkers and Research, Nordic Bioscience, Herlev, Denmark
| | - L Arendt-Nielsen
- SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark; C4Pain, Aalborg, Denmark
| | - K K Petersen
- SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - T Christiansen
- Orthopedic Department, Gentofte University Hospital, Hellerup, Denmark
| | - J Samuels
- Division of Rheumatology, Department of Medicine, NYU School of Medicine, New York, NY, 10003, USA
| | - S Abramson
- Division of Rheumatology, Department of Medicine, NYU School of Medicine, New York, NY, 10003, USA
| | - M A Karsdal
- Rheumatology, Biomarkers and Research, Nordic Bioscience, Herlev, Denmark
| | - M Attur
- Division of Rheumatology, Department of Medicine, NYU School of Medicine, New York, NY, 10003, USA
| | - A C Bay-Jensen
- Rheumatology, Biomarkers and Research, Nordic Bioscience, Herlev, Denmark.
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Riis RGC, Gudbergsen H, Simonsen O, Henriksen M, Al-Mashkur N, Eld M, Petersen KK, Kubassova O, Bay Jensen AC, Damm J, Bliddal H, Arendt-Nielsen L, Boesen M. The association between histological, macroscopic and magnetic resonance imaging assessed synovitis in end-stage knee osteoarthritis: a cross-sectional study. Osteoarthritis Cartilage 2017; 25:272-280. [PMID: 27737813 DOI: 10.1016/j.joca.2016.10.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 08/31/2016] [Accepted: 10/05/2016] [Indexed: 02/06/2023]
Abstract
OBJECTIVES To investigate the association between magnetic resonance imaging (MRI), macroscopic and histological assessments of synovitis in end-stage knee osteoarthritis (KOA). METHODS Synovitis of end-stage osteoarthritic knees was assessed using non-contrast-enhanced (CE), contrast-enhanced magnetic resonance imaging (CE-MRI) and dynamic contrast-enhanced (DCE)-MRI prior to (TKR) and correlated with microscopic and macroscopic assessments of synovitis obtained intraoperatively. Multiple bivariate correlations were used with a pre-specified threshold of 0.70 for significance. Also, multiple regression analyses with different subsets of MRI-variables as explanatory variables and the histology score as outcome variable were performed with the intention to find MRI-variables that best explain the variance in histological synovitis (i.e., highest R2). A stepped approach was taken starting with basic characteristics and non-CE MRI-variables (model 1), after which CE-MRI-variables were added (model 2) with the final model also including DCE-MRI-variables (model 3). RESULTS 39 patients (56.4% women, mean age 68 years, Kellgren-Lawrence (KL) grade 4) had complete MRI and histological data. Only the DCE-MRI variable MExNvoxel (surrogate of the volume and degree of synovitis) and the macroscopic score showed correlations above the pre-specified threshold for acceptance with histological inflammation. The maximum R2-value obtained in Model 1 was R2 = 0.39. In Model 2, where the CE-MRI-variables were added, the highest R2 = 0.52. In Model 3, a four-variable model consisting of the gender, one CE-MRI and two DCE-MRI-variables yielded a R2 = 0.71. CONCLUSION DCE-MRI is correlated with histological synovitis in end-stage KOA and the combination of CE and DCE-MRI may be a useful, non-invasive tool in characterising synovitis in KOA.
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Affiliation(s)
- R G C Riis
- The Parker Institute, Copenhagen University Hospital Bispebjerg-Frederiksberg, Denmark; Department of Radiology, Copenhagen University Hospital Bispebjerg-Frederiksberg, Denmark; Department of Radiology, Zealand University Hospital Holbaek, Denmark.
| | - H Gudbergsen
- The Parker Institute, Copenhagen University Hospital Bispebjerg-Frederiksberg, Denmark.
| | - O Simonsen
- Orthopaedic Surgery Research Unit, Aalborg University Hospital, Aalborg, Denmark.
| | - M Henriksen
- The Parker Institute, Copenhagen University Hospital Bispebjerg-Frederiksberg, Denmark; Department of Physical and Occupational Therapy, Copenhagen University Hospital Bispebjerg-Frederiksberg, Denmark.
| | - N Al-Mashkur
- Department of Pathology, Aalborg University Hospital, Aalborg, Denmark.
| | - M Eld
- Department of Pathology, Aalborg University Hospital, Aalborg, Denmark.
| | - K K Petersen
- Centre for Sensory-Motor Interaction, Aalborg University, Aalborg, Denmark.
| | - O Kubassova
- Image Analysis Ltd., London, United Kingdom.
| | | | - J Damm
- Department of Radiology, Copenhagen University Hospital Bispebjerg-Frederiksberg, Denmark.
| | - H Bliddal
- The Parker Institute, Copenhagen University Hospital Bispebjerg-Frederiksberg, Denmark.
| | - L Arendt-Nielsen
- Centre for Sensory-Motor Interaction, Aalborg University, Aalborg, Denmark.
| | - M Boesen
- The Parker Institute, Copenhagen University Hospital Bispebjerg-Frederiksberg, Denmark; Department of Radiology, Copenhagen University Hospital Bispebjerg-Frederiksberg, Denmark.
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7
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Graven-Nielsen T, Izumi M, Petersen KK, Arendt-Nielsen L. User-independent assessment of conditioning pain modulation by cuff pressure algometry. Eur J Pain 2016; 21:552-561. [PMID: 27859944 DOI: 10.1002/ejp.958] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2016] [Indexed: 01/04/2023]
Abstract
BACKGROUND The use of conditioning pain modulation (CPM) is hampered by poor reproducibility and lack of user-independent paradigms. This study refined the CPM paradigm by applying user-independent cuff algometry. METHODS In 20 subjects, the CPM effect of conditioning with cuff stimulation on the arm was investigated by pain test stimuli on the contralateral leg before and in parallel with different cuff conditionings (10, 30, 60 kPa/60 s; 30, 60 kPa/10 s). As test stimulus, another cuff was inflated (1 kPa/s) until the subjects detected the pain tolerance threshold (PTT) during which the pain detection threshold (PDT) and the pressure at a pain intensity of 6 cm on a 10-cm visual analogue scale (PVAS6) were extracted. For comparison, pressure pain thresholds (PPTs) as test stimuli were recorded by the user-dependent handheld pressure algometry. Combinations of cuff locations for conditioning (pain intensity standardized) and contralateral test stimuli were additionally evaluated (leg-arm, leg-leg, arm-thigh). The test-retest reliability in two sessions 1 month apart was assessed in five CPM protocols. RESULTS In all protocols, the PDT, PVAS6 and PTT increased during conditioning compared with baseline (p < 0.05). The CPM effect (i.e. conditioning minus baseline) for PVAS6, PTT and PPT increased for increasing conditioning intensities (p < 0.05). The CPM effects were not significantly different for changes in conditioning durations or conditioning/test stimulus locations. In two sessions, the CPM effects for PVAS6 and PTT assessed after 60 s of conditioning on the leg/thigh showed the highest intra-class correlations (0.47-0.73), where they were 0.04-0.6 for PPTs. CONCLUSIONS The user-independent cuff algometry is reliable for CPM assessment and for supra-pain threshold test stimuli better than the user-dependent technology. SIGNIFICANCE A user-independent CPM technique where the conditioning is controlled by one cuff stimulation, and the test-stimulus is provided by another cuff stimulation. This study shows that cuff algometry is reliable for CPM assessment.
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Affiliation(s)
- T Graven-Nielsen
- Center for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Denmark
| | - M Izumi
- Center for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Denmark.,Department of Orthopaedic Surgery, Kochi University, Japan
| | - K K Petersen
- Center for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Denmark
| | - L Arendt-Nielsen
- Center for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Denmark
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Imai Y, Petersen KK, Mørch CD, Arendt Nielsen L. Comparing test-retest reliability and magnitude of conditioned pain modulation using different combinations of test and conditioning stimuli. Somatosens Mot Res 2016; 33:169-177. [PMID: 27650216 DOI: 10.1080/08990220.2016.1229178] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
This study aimed to compare the reliability and magnitude of conditioned pain modulation (CPM) by applying different test stimuli (TS) and conditioning stimuli (CS). Twenty-six healthy male participants were recruited in the study of two identical sessions. In each session, four TS (electrical, heat, handheld, and cuff pressure algometry) were applied before and during CS (cold pressor test (CPT) or cuff algometry). The same procedure was repeated with 45-min intervals, but with the other CS. Five thresholds were measured including four pain detection thresholds from four TS and pain tolerance threshold from cuff TS (cuff PTT). Intraclass correlation coefficient (ICC (3,1)) and coefficient of variation (CV) were calculated as measures of reliability. The reliability of TS before and during CS was good for all combinations (ICC: 0.60-0.96, CV: 2.2-22.9%), but the reliability of the CPM effect varied (ICC: 0.04-0.53, CV: 63.6-503.9%). The most reliable combinations were considered to be the handheld pressure pain threshold with CPT (ICC: 0.49, CV: 63.6%) and the cuff pressure pain threshold with CPT (ICC: 0.44, CV: 107.6%). Significant CPM effects were found for all combinations, except the combinations of electrical and heat pain thresholds with cuff CS, which indicates the novel classification of the CPM mechanism. The combinations of handheld pressure and heat pain threshold with CPT would provide the minimum sample size to detect the significant CPM changes in further studies. It is beneficial to provide and compare both ICC and CV to design further clinical trials.
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Affiliation(s)
- Y Imai
- a Department of Health Science and Technology , Aalborg University , Aalborg , Denmark.,b Clinical Development Department , Asahi Kasei Pharma Corporation , Tokyo , Japan
| | - K K Petersen
- a Department of Health Science and Technology , Aalborg University , Aalborg , Denmark
| | - C D Mørch
- a Department of Health Science and Technology , Aalborg University , Aalborg , Denmark
| | - L Arendt Nielsen
- a Department of Health Science and Technology , Aalborg University , Aalborg , Denmark
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Andersen HH, Imai Y, Petersen KK, Koenig J, Elberling J, Arendt-Nielsen L. Conditioning pain stimulation does not affect itch induced by intra-epidermal histamine pricks but aggravates neurogenic inflammation in healthy volunteers. Somatosens Mot Res 2016; 33:49-60. [DOI: 10.3109/08990220.2016.1173535] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- H. H. Andersen
- SMI, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Y. Imai
- SMI, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
- Clinical Development Department, Clinical Department Center, Asahi Kasei Pharma Corporation, Tokyo, Japan
| | - K. K. Petersen
- SMI, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - J. Koenig
- Department of Psychology, The Ohio State University, Columbus, Ohio, USA
- Section for Translational Psychobiology in Child and Adolescent Psychiatry, Department of Child and Adolescent Psychiatry, Centre for Psychosocial Medicine, University of Heidelberg, Heidelberg, Germany
| | - J. Elberling
- The Allergy Clinic, Copenhagen University Hospital, Gentofte, Copenhagen, Denmark
| | - L. Arendt-Nielsen
- SMI, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
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10
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Siebuhr AS, Petersen KK, Arendt-Nielsen L, Egsgaard LL, Eskehave T, Christiansen C, Simonsen O, Hoeck HC, Karsdal MA, Bay-Jensen AC. Identification and characterisation of osteoarthritis patients with inflammation derived tissue turnover. Osteoarthritis Cartilage 2014; 22:44-50. [PMID: 24216059 DOI: 10.1016/j.joca.2013.10.020] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 10/14/2013] [Accepted: 10/31/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Osteoarthritis (OA) is a degenerative disease with a subset of patients experiencing joint inflammation, but C-reactive protein (CRP) has shown limited use in OA as a diagnostic marker. The aim was to identify subpopulations of patients with high or low levels of acute (high sensitive CRP (hsCRP)) and/or matrix metalloproteinase (MMP) derived inflammation (CRPM) and investigate the subpopulations' association with biomarkers of collagen degradation and Kellgren-Lawrence (KL) score. METHODS hsCRP, CRPM and MMP-degraded type I, II and III collagen (type I collagen degraded by MMP (C1M), type II collagen degraded by MMP (C2M) and type III collagen degraded by MMP (C3M)) were quantified by enzyme linked immunosorbent assays (ELISA) in serum of 342 patients with symptomatic knee OA of which 60 underwent total knee replacement (TKR). KL was obtained. Patients were divided into quartiles by hsCRP and CRPM levels, where Q1 and Q4 were low or high in both. The biomarker levels of healthy adults provided in the ELISA kits were used as reference level. RESULTS hsCRP was elevated in TKR (5.9(3.6-8.2 95% confidence interval (CI)) μg/mL) compared to reference level (3 μg/mL), while CRPM was highly elevated with OA independent of KL (10-14 ng/mL) compared to reference level (5 ng/mL). Q4 had higher KL than Q1 (P < 0.001), Q2 (P = 0.017) and Q3 (P < 0.001). C1M, C2M and C3M were lowest in Q1. C1M was elevated in Q3 compared to Q2 (P < 0.001), whereas C3M was lower (P = 0.019). CONCLUSION A bigger proportion of patients were elevated in CRPM compared to hsCRP, indicating MMP-derived inflammation as a component of OA. Moreover, the levels of MMP-degraded collagens differed between the subgroups segregated by inflammation, indicating distinctively different subpopulation selected by inflammation.
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Affiliation(s)
- A S Siebuhr
- Rheumatology, Biomarkers and Research, Nordic Bioscience, Herlev, Denmark.
| | - K K Petersen
- Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Denmark; Aalborg University Hospital, Department of Orthopaedic Surgery, Aalborg, Denmark
| | - L Arendt-Nielsen
- Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Denmark
| | - L L Egsgaard
- Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Denmark
| | - T Eskehave
- Center for Clinical and Basic Research and C4Pain, Aalborg, Denmark
| | - C Christiansen
- Rheumatology, Biomarkers and Research, Nordic Bioscience, Herlev, Denmark; Center for Clinical and Basic Research and C4Pain, Aalborg, Denmark
| | - O Simonsen
- Aalborg University Hospital, Department of Orthopaedic Surgery, Aalborg, Denmark
| | - H C Hoeck
- Center for Clinical and Basic Research and C4Pain, Aalborg, Denmark
| | - M A Karsdal
- Rheumatology, Biomarkers and Research, Nordic Bioscience, Herlev, Denmark
| | - A C Bay-Jensen
- Rheumatology, Biomarkers and Research, Nordic Bioscience, Herlev, Denmark
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Siebuhr AS, Petersen KK, Arendt-Nielsen L, Egsgaard LL, Eskehave T, Christiansen C, Simonsen O, Hoeck HC, Karsdal MA, Bay-Jensen AC. SAT0317 Identification of Osteoarthritis Patients with Chronic Tissue Inflammation Whom may Benefit from Anti-Inflammatory Treatment. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Brøndum E, Hasenkam JM, Secher NH, Bertelsen MF, Grøndahl C, Petersen KK, Buhl R, Aalkjær C, Baandrup U, Nygaard H, Smerup M, Stegmann F, Sloth E, Østergaard KH, Nissen P, Runge M, Pitsillides K, Wang T. Jugular venous pooling during lowering of the head affects blood pressure of the anesthetized giraffe. Am J Physiol Regul Integr Comp Physiol 2009; 297:R1058-65. [DOI: 10.1152/ajpregu.90804.2008] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
How blood flow and pressure to the giraffe's brain are regulated when drinking remains debated. We measured simultaneous blood flow, pressure, and cross-sectional area in the carotid artery and jugular vein of five anesthetized and spontaneously breathing giraffes. The giraffes were suspended in the upright position so that we could lower the head. In the upright position, mean arterial pressure (MAP) was 193 ± 11 mmHg (mean ± SE), carotid flow was 0.7 ± 0.2 l/min, and carotid cross-sectional area was 0.85 ± 0.04 cm2. Central venous pressure (CVP) was 4 ± 2 mmHg, jugular flow was 0.7 ± 0.2 l/min, and jugular cross-sectional area was 0.14 ± 0.04 cm2 ( n = 4). Carotid arterial and jugular venous pressures at head level were 118 ± 9 and −7 ± 4 mmHg, respectively. When the head was lowered, MAP decreased to 131 ± 13 mmHg, while carotid cross-sectional area and flow remained unchanged. Cardiac output was reduced by 30%, CVP decreased to −1 ± 2 mmHg ( P < 0.01), and jugular flow ceased as the jugular cross-sectional area increased to 3.2 ± 0.6 cm2 ( P < 0.01), corresponding to accumulation of ∼1.2 l of blood in the veins. When the head was raised, the jugular veins collapsed and blood was returned to the central circulation, and CVP and cardiac output were restored. The results demonstrate that in the upright-positioned, anesthetized giraffe cerebral blood flow is governed by arterial pressure without support of a siphon mechanism and that when the head is lowered, blood accumulates in the vein, affecting MAP.
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Affiliation(s)
| | - J. M. Hasenkam
- Institute of Clinical Medicine, Departments of CardioThoracic and Vascular Surgery, and
| | | | - M. F. Bertelsen
- Department of Large Animal Science, University of Copenhagen, and
- Center for Zoo and Wild Animal Health, Copenhagen Zoo, Copenhagen, Denmark
| | - C. Grøndahl
- Center for Zoo and Wild Animal Health, Copenhagen Zoo, Copenhagen, Denmark
| | | | - R. Buhl
- Department of Large Animal Science, University of Copenhagen, and
| | | | - U. Baandrup
- Institute of Pathology, Aarhus University Hospital, Aarhus, Denmark
- Vendsyssel Hospital, Hjørring, Denmark
| | - H. Nygaard
- Institute of Clinical Medicine, Departments of CardioThoracic and Vascular Surgery, and
- Engineering College of Aarhus, Aarhus, Denmark
| | - M. Smerup
- Institute of Clinical Medicine, Departments of CardioThoracic and Vascular Surgery, and
| | - F. Stegmann
- Department of Companion Animal Clinical Studies, University of Pretoria, Pretoria, South Africa; and
| | - E. Sloth
- Institute of Clinical Medicine, Departments of CardioThoracic and Vascular Surgery, and
| | | | - P. Nissen
- Department of Anesthesiology, Rigshospitalet,
| | - M. Runge
- Department of Anesthesiology, Rigshospitalet,
| | | | - T. Wang
- Zoophysiology, Department of Biological Sciences, Aarhus University, Aarhus, Denmark
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Atienza SG, Satovic Z, Petersen KK, Dolstra O, Martín A. Identification of QTLs influencing combustion quality in Miscanthus sinensis Anderss. II. Chlorine and potassium content. Theor Appl Genet 2003. [PMID: 12955211 DOI: 10.1046/j.1439-0523.2003.00826.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Chlorine and potassium content are important traits related to combustion quality of Miscanthus species. These traits were analysed in a cross between F(1.1) and F(1.7) entries of Miscanthus sinensis Anderss, both lines offspring of the cross between MS-90-2 and MS-88-110. Quantitative trait locus (QTL) analyses were performed on a previous linkage map constructed with the offspring cross mapping strategy. The mapqtl 4.0 package was used to perform QTL analyses. Six potential QTLs were detected with data collected over a 2-year period. Of these, four were associated with chlorine and two with potassium. These results could be used as an initial step to develop a marker-aided selection programme for biomass with low mineral content.
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Affiliation(s)
- S G Atienza
- Departamento de Agronomía y Mejora Genética Vegetal, Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Apdo. 4084, 14080 Córdoba, Spain.
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Atienza SG, Satovic Z, Petersen KK, Dolstra O, Martín A. Identification of QTLs influencing combustion quality in Miscanthus sinensis Anderss. II. Chlorine and potassium content. Theor Appl Genet 2003; 107:857-63. [PMID: 12955211 DOI: 10.1007/s00122-003-1218-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2002] [Accepted: 09/25/2002] [Indexed: 05/23/2023]
Abstract
Chlorine and potassium content are important traits related to combustion quality of Miscanthus species. These traits were analysed in a cross between F(1.1) and F(1.7) entries of Miscanthus sinensis Anderss, both lines offspring of the cross between MS-90-2 and MS-88-110. Quantitative trait locus (QTL) analyses were performed on a previous linkage map constructed with the offspring cross mapping strategy. The mapqtl 4.0 package was used to perform QTL analyses. Six potential QTLs were detected with data collected over a 2-year period. Of these, four were associated with chlorine and two with potassium. These results could be used as an initial step to develop a marker-aided selection programme for biomass with low mineral content.
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Affiliation(s)
- S G Atienza
- Departamento de Agronomía y Mejora Genética Vegetal, Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Apdo. 4084, 14080 Córdoba, Spain.
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15
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Atienza SG, Satovic Z, Petersen KK, Dolstra O, Martín A. Identification of QTLs influencing agronomic traits in Miscanthus sinensis Anderss. I. Total height, flag-leaf height and stem diameter. Theor Appl Genet 2003; 107:123-129. [PMID: 12835938 DOI: 10.1007/s00122-003-1220-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2002] [Accepted: 09/25/2002] [Indexed: 05/23/2023]
Abstract
We have developed the first quantitative trait locus (QTL) analyses for agronomic traits in a cross between F(1.1) (P1) and F(1.7) (P7) entries of Miscanthus sinensis Anderss. Both lines are offspring of the cross between MS-90-2 and MS-88-110. A map based on random amplified polymorphic DNA markers previously constructed was used to perform the QTL analyses. This map was developed using a new mapping strategy that has been designated offspring cross. Eleven QTLs were detected for height, panicle height and diameter using the programme mapqtl 4.0 and the multiple QTL method. QTL significance was determined using several analyses, including Kruskal-Wallis analyses, empirical determination of LOD critical values using permutation tests, QTLs validation with field data over 2 years and co-localization of QTLs for correlated traits. The results obtained could be the first step in developing a marker-assisted selection programming in this species for biomass production.
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Affiliation(s)
- S G Atienza
- Departamento de Agronomía y Mejora Genética Vegetal, Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Apdo. 4084, 14080, Córdoba, Spain.
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16
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Wright NB, Carty HML, Sprigg A, Kampenes VB, Friis M, Petersen KK, Stake G, Klaveness AJ. Iodixanol in paediatric gastrointestinal imaging: safety and efficacy comparison with iohexol. Br J Radiol 2002; 75:127-35. [PMID: 11893636 DOI: 10.1259/bjr.75.890.750127] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Iodixanol (Visipaque) is a dimeric, non-ionic iodinated contrast medium that is isotonic with blood at all clinically relevant concentrations. Iodixanol was compared in a randomized, double blind, parallel group, phase III multicentre trial with a monomeric, non-ionic contrast medium, iohexol (Omnipaque), at two concentrations assessing safety, tolerability and radiographic efficacy during contrast enhanced gastrointestinal radiography examinations of children. 154 children entered the trial; 152 formed the safety population and 147 the efficacy population. All examinations were performed following standard departmental practice. Children were assigned into either a high or low concentration group (iodixanol, 150 mgI ml(-1) and 320 mgI ml(-1) vs iohexol, 140 mgI ml(-1) and 300 mgI ml(-1)). The primary outcome measure for efficacy was the overall quality of visualization, which was assessed using a 100 mm visual analogue scale (VAS). The secondary efficacy variables assessed were quality of contrast opacification, mucosal coating and overall quality of diagnostic information. Safety evaluation involved patient follow-up for at least 48 h. Taste acceptance was also assessed. There was no statistically significant difference between the two contrast media with regard to the primary and secondary efficacy variables assessed, although higher ratings were observed for iodixanol. The 100 mm VAS score overall was 86 mm for iodixanol and 82 mm for iohexol (95% confidence interval -2.56, 10.42). The frequency of adverse events was lower for patients receiving iodixanol. Adverse events, mainly diarrhoea, occurred in 12 patients (16.2%) in the iodixanol group and 28 patients (35.9%) in the iohexol group. This reached statistical significance (p=0.006). Overall, iodixanol is well suited for examinations of the gastrointestinal tract, giving good efficacy results and fewer adverse events than iohexol.
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Affiliation(s)
- N B Wright
- Department of Paediatric Radiology, Royal Manchester & Booth Hall Children's Hospital, Manchester, UK
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17
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Brink O, Villadsen I, Davidsen MT, Petersen KK, Charles AV, Sabroe S. [Decline of violence in ]rhus. Violence registered in ]rhus hospital during a period of 12 years]. Ugeskr Laeger 1996; 158:6277-81. [PMID: 8966813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The aim of this study was to describe the changes in frequency and character of interpersonal violence in Aarhus during a twelve year period. A one year (1993-1994) prospective registration of all persons exposed to violence and attending the casualty wards or the Department of Forensic Medicine was performed. The results were compared with similar studies performed in 1981-1982 and 1987-1988. The incidence in the last one year period had decreased significantly to 5.5 cases/1000 inhabitants compared to 6.5 in 1981-1982 and 7.5 in 1987-1988. The decrease was most distinct among men between 15-24 years of age. Ninety percent of the lesions were minor and the severity did not differ from the former study. Among risk factors associated to severe violence were men between 25-49 years of age, foreigners, use of knives and domestic violence. Firearms were only involved in 0.8% of the cases. Significantly higher proportion of the victims reported the incidence to the police in 1993-1994 than previously.
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Affiliation(s)
- O Brink
- Ulykkes Analyse Centret for Arhus Amtskommune, og Aarhus Universitet
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18
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Heje JM, Jensen JJ, Petersen KK. [Healing of scaphoid fractures assessed by tomography. A follow-up study of treated patients]. Ugeskr Laeger 1996; 158:4288-90. [PMID: 8757898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Thirty-five of 40 patients who had sustained an undisplaced fracture of the waist of the scaphoid were reviewed clinically and radiographically (including tomography) at a median of 70 (13-120) weeks after injury. All fractures had been retained in a below elbow scaphoid plaster for a period of median eight (3-12) weeks. End of treatment was based on the absence of "tenderness" over the scaphoid and on radiographical signs of fracture union median ten (5-24) weeks after injury. At review 28 (80%) of the fractures were united based on standard radiographs and tomography. Four fractures ((11%) 95% confidence limits: 3-27%) were nonunions and three fractures (9%) were probably united. Tomography gave additional information about the state of union if the fracture was visible but unclassifiable on standard radiographs. Tenderness over the scaphoid was only found in the nonunions and probably united fractures. Radiographic and clinical evaluation of the fracture six months after injury is recommended.
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Affiliation(s)
- J M Heje
- Ortopaedkirurgisk afdeling, Randers Centralsygehus
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Schrøder HM, Petersen KK, Erlandsen M. Occurrence and incidence of the second hip fracture. Clin Orthop Relat Res 1993:166-9. [PMID: 8472408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
During a 16-year period, 256 second hip fractures were found in 3898 persons 40 years of age and older who had a previous hip fracture. Ninety-two percent of the second fractures were contralateral, and 68% of these were the same type as the first. Thus, 62% of the femoral neck and 72% of the trochanteric fractures were preceded by a contralateral fracture of the same type. The mean interval between fractures was 3.3 years, and there was no significant difference between genders or among fracture types. The risk of the first fracture was 1.6 per 1000 men per year and 3.6 per 1000 women, and for the second fracture 15 per 1000 men per year and 22 per 1000 women. This increase was highly significant for both genders, especially for men.
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Affiliation(s)
- H M Schrøder
- University Department of Orthopaedics, County & Municipal Hospital, Aarhus, Denmark
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Eiskjaer SP, Schrøder HM, Charles AV, Petersen KK. Epidemiology of violence in a Danish municipality. Changes in severity during the 1980s. Dan Med Bull 1992; 39:83-5. [PMID: 1563298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Between April 1987 and April 1988, all assault victims attending the two casualty wards and the Institute of Forensic Medicine in Arhus were registered, and an extensive questionnaire was completed by the casualty ward physician. These data were compared with the data from an analogous study undertaken six years earlier. A total of 1874 patients were victims of personal violence in 1987 compared to 1639 in 1981. The most common cause of injury was one or more blows from a fist and/or kicks (used in approximately 70% of all cases). The present study demonstrated an increasing use of firearms and assaults involving attempts to strangle the victim. Ninety-eight percent of the injuries were classified as no injury or AIS-grade 1-2 in both 1981 and 1987. The number of AIS-grade 2 injuries increased from 1981 to 1987 due to an increased number of facial injuries, but the number of homicides and AIS-grade 4-6 injuries decreased in the interval. Based on the present study, it is concluded that the severity of interpersonal violence did not increase in the Arhus area in the 1980s.
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Schrøder HM, Petersen KK, Eiskjaer SP, Charles AV. Epidemiology of violence in a Danish municipality. Changes in the incidence during the 1980s. Dan Med Bull 1992; 39:81-3. [PMID: 1563297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A one-year prospective study of injuries caused by violence was performed at the two casualty wards and at the Institute of Forensic Medicine in Arhus, and the results were compared with those of a similar study done six years earlier. Whereas the population at risk increased by 4% to just over a quarter of a million, the number of cases increased by 14% to 1874 (p = 0.06) and the number of persons by 17% to 1726 (p = 0.01). The overall incidence increased for females from 3.0 to 3.7 per 1000 (maximum 7.4 per 1000 females 35-39 years old), and for males from 10.6 to 11.1 per 1000 (maximum 33.4 per 1000 males 15-19 years old). Statistically significant increase of age-specific incidence rates was only found among females 35-49 years old, where, however, also the largest frequency of repeated registrations was noted. As in the former investigation, almost three-fourths of male violence took place at bars and discotheques or on the street, usually associated with unknown person(s), whereas one-half of female violence occurred at home with the partner as the most frequent counterpart. Police recorded cases increased from 16 to 22% (p less than 0.05).
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Charles AV, Schrøder HM, Petersen KK, Eiskjaer SP. [Violence and women in Arhus. Changes in the 1980's]. Ugeskr Laeger 1991; 153:275-8. [PMID: 1996498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
As part of a one-year prospective investigation of accidents due to violence in Arhus carried out by the casualty departments and the Institute of Forensic Medicine in cooperation with the Arhus Police and the Crisis centre for female victims of violence, the fraction of violence which involved women was analysed. A total of 492 contacts were received from 424 women. The average age was 32 years. The home was the commonest site of violence with the husband as the commonest perpetrator of violence (192). In 98 cases the perpetrator was unknown. The majority had received blunt injuries (blows and/or kicks). The lesions frequently appeared to be limited from a therapeutic viewpoint. In 143 women, however, the lesions were potentially serious. Thirteen women were hospitalized and 60 were referred for treatment in other departments. Violence was commonest in the evening and night hours and there was a tendency to an increase towards the end of the week. The majority (279) stated that the episode was not their fault. The police were contacted in 25% of the cases. A total of 164 requests were made for access to the Crisis Centre by female victims of violence. Of these, 30 women had been seen by a doctor and 23 had previously been hospitalized. Compared with conditions five years previously, a considerable increase in the number of registered violent accidents to women was observed. On the other hand, no definite evidence was found that the nature of the violence to which they had been exposed had altered during the past five years.
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Petersen KK, Rasmussen OS, Jurik AG. Complete sternal cleft. Rontgenblatter 1989; 42:525-6. [PMID: 2609075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Complete sternal clefts are rare congenital anomalies, which may be associated with other abnormalities of midline fusion. We here present a case with a complete cleft as the only anomaly of midline fusion.
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Affiliation(s)
- K K Petersen
- Department of Diagnostic Radiology, Municipal Hospital, University of Aarhus, Denmark
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Petersen KK, Bertelsen V, Dirdal M, Funch-Jensen P, Thommesen P. The incidence of gastro-oesophageal reflux in children with exogenic and endogenic asthma tested by a new radiological method. Rontgenblatter 1989; 42:527-9. [PMID: 2609076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
24 asthmatic children and 15 children without any respiratory or gastrointestinal signs of symptoms were investigated for gastro-oesophageal reflux (GER) by a new radiological test in which the child swallowed a piece of rye bread with liver paté after intake of a glass of Mixobar (600 mg/ml barium sulphate). The asthmatic children were divided into an exogenic and an endogenic group. 62.5% of the endogenically asthmatic children had GER (p less than 0.01) and 19% in the exogenic group. In normal children only one child had GER (7%). Furthermore, GER was more frequent in asthmatic children with nightly cough compared to asthmatic children without nightly cough (p less than 0.02). It is concluded that GER reflux occurred significantly more often in patients with endogenic asthma and/or nightly cough when compared to normal children.
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Affiliation(s)
- K K Petersen
- Department of Diagnostic Radiology, Aarhus Kommunehospital, University of Aarhus, Denmark
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Petersen KK, Schrøder HM, Eiskjaer SP. [CS tear gas spray as an injurious agent. Clinical aspects]. Ugeskr Laeger 1989; 151:1388-9. [PMID: 2734939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Eight cases are described, in which illegally imported CS-tear gas spray ("self-defence spray") were used in connection with malice or robbery. Analysis of the content of the sprays revealed small amounts of CS (0.2 per cent), but large amounts of solvents and propellants. The latter are presumed to have contributed to the symptoms. Exposure to CS-tear gas spray is usually harmless, but skin manifestations such as ulcerations, Quincke-like oedema in the face and allergic dermatitis have been reported by other authors. Theoretically, CS-particles may adhere to the cornea. Examination of the eye is therefore recommended.
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Petersen KK, Keller J, Jensen J. [Patellar fractures. Modified tension band osteosynthesis]. Ugeskr Laeger 1989; 151:937-9. [PMID: 2711508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In a retrospective investigation, the ability of modified tension band osteosynthesis to retain 45 reduced fractures of the patella and the functional end result was studied. Postoperatively, 24 patients were immobilized in plaster casts for 0-14 days and the remainder for 25-56 days. Postoperative radiographs revealed nine fractures (four transverse, three comminuted and two pole fractures) with fragment displacements exceeding 2-3 millimeters. Among these, three fractures had secondary dislocation and, further, one exactly reduced pole fracture dislocated. Operation was complicated with infection in four cases: two superficial wound infections, one subcutaneous fistula and one pyarthron. Operative release of adhesions was performed in five cases, two patients were patellectomized and one required a condyle prosthesis. At follow-up 18-80 months after the injury, 37 patients were examined clinically. Among 29 patients without concomitant injuries, seven patients were free of symptoms and 13 patients were without any pain. Free knee movement and quadriceps atrophy less than or equal to 1.5 cm was found in 17 patients. The modified tension band can retain adequately reduced transverse and comminuted fractures of the patella, probably also without plaster immobilisation. Dislocated fracture of the patella is a serious lesion, which must be treated with care.
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Petersen KK, Petersen LK. [Bilateral Freiberg's disease. Clinical and radiologic onset after age 44]. Ugeskr Laeger 1989; 151:506-7. [PMID: 2922855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Pedersen PR, Petersen KK, Topp SW. Value of ultrasonography in the diagnosis of gallstone ileus. Radiologe 1988; 28:479-80. [PMID: 3055024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Two patients are presented, both of whom were admitted to hospital because of abdominal pains. In both patients, ultrasonography showed gallstones in the lower abdomen and in the small bowel loops were found to be dilated. In both cases it was possible to diagnose the gallstone ileus by ultrasonography and to mark the abdomen as a guide to the surgeon.
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Affiliation(s)
- P R Pedersen
- University Department of Radiology R, Municipal Hospital, Aarhus C, Denmark
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Aalkjaer C, Heagerty AM, Petersen KK, Swales JD, Mulvany MJ. Evidence for increased media thickness, increased neuronal amine uptake, and depressed excitation--contraction coupling in isolated resistance vessels from essential hypertensives. Circ Res 1987; 61:181-6. [PMID: 3621484 DOI: 10.1161/01.res.61.2.181] [Citation(s) in RCA: 202] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The functional and morphologic characteristics of isolated subcutaneous resistance vessels (about 170 micron i.d.) from 15 untreated subjects with essential hypertension and 15 matched controls were examined. The vessels from the hypertensives had a 29% increase in the media-thickness-to-lumen-diameter ratio. The maximal force development to noradrenaline (NA) expressed as active pressure (an estimate of the pressure the vessels could have contracted against in vivo) was 30% higher in vessels from the hypertensives, while active media stress (force per square unit of smooth muscle) and sensitivity to NA was not significantly different. Increased active pressure, as well as unaltered active media stress and sensitivity, was seen for vasopressin, serotonin, angiotensin II, and K+. There was, however, an enhanced leftward shift of the NA sensitivity with cocaine (an inhibitor of the neuronal amine pump) in vessels from the hypertensives [pD2(+cocaine) and pD2(-cocaine) were 0.185 +/- 0.53) and 0.040 +/- 0.044, hypertensives and normotensives, respectively, p less than 0.05] suggesting an abnormality of presynaptic function in essential hypertension. Furthermore, the calcium sensitivity was depressed (pD2 was 4.197 +/- 0.050 and 4.381 +/- 0.068, hypertensives and normotensives, respectively, p less than 0.05), and the rate of relaxation was faster (p less than 0.05) in vessels from hypertensives, suggesting that excitation-contraction coupling might be depressed. The results suggest that the increased pressor response in essential hypertension can, to a large extent, be explained by altered vascular structure, while smooth muscle function is either unchanged or possibly depressed.
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Petersen KK. [Sensory nerve compression syndromes]. Ugeskr Laeger 1987; 149:599-600. [PMID: 3824670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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