LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 95

Search options

  1. Article ; Online: Missed Emergency Department Diagnosis of Mild Traumatic Brain Injury in Patients with Chronic Pain After Motor Vehicle Collision.

    Peixoto, Cayden / Buchanan, Derrick Matthew / Nahas, Richard

    Pain physician

    2023  Volume 26, Issue 1, Page(s) 101–110

    Abstract: Background: Mild traumatic brain injury (mTBI), or concussion, is the most common presentation of TBI in the emergency department (ED), but a diagnosis of mTBI may be missed in patients presenting with other acute injuries after a motor vehicle ... ...

    Abstract Background: Mild traumatic brain injury (mTBI), or concussion, is the most common presentation of TBI in the emergency department (ED), but a diagnosis of mTBI may be missed in patients presenting with other acute injuries after a motor vehicle collision (MVC).
    Objective: To estimate the frequency of missed diagnoses of mTBI in patients seen in the ED after MVC who later developed chronic pain syndromes.
    Study design: Retrospective cohort study.
    Setting: An interventional pain management clinic.
    Methods: Data were drawn from information collected during standardized intake assessments completed by 33 patients involved in an MVC referred to a community-based clinic for chronic pain management. The prevalence of missed mTBI and postconcussion syndrome (PCS) were estimated based on the clinical diagnosis, which included reviewing acute care medical records, the Rivermead Post-Concussion Symptoms Questionnaire (RPQ) scores, and patient-reported injury history.
    Results: There was a high prevalence of presumed mTBI in this sample (69.7%) of patients involved in an MVC, but an acute care diagnosis was made in only 39.1% of cases. Patients diagnosed with mTBI at acute care had significantly lower PCS symptom scores than patients whose diagnosis was missed (P < 0.05). Diagnostic brain imaging (magnetic resonance imaging [MRI] or computed tomography [CT]) was more frequently ordered (P < 0.05) in patients diagnosed with mTBI. Using a modified RPQ developed for use with chronic pain patients, 54.5% of the sample met criteria for PCS. Loss of consciousness, meeting established criteria for mTBI, postinjury headache, and meeting criteria for posttraumatic stress disorder were significantly correlated with the development of PCS.
    Limitations: Data may be subject to recall and selection bias. Additional research with a larger study sample is needed to investigate correlations between individual symptoms and the development of PCS following an MVC.
    Conclusion: Patients presenting to the ED following an MVC have a high prevalence of mTBI. Patients whose diagnosis of mTBI is missed end up with significantly more severe postconcussion symptoms. While all patients included in this study were either referred or being treated for chronic pain after an MVC, they all also went on to develop PCS and disability following their accident, suggesting that better screening for mTBI after an MVC might identify those who may require more follow-up or rehabilitation therapy. In particular, those presenting with loss of consciousness, an altered mental state, posttraumatic amnesia, or postinjury headache are at increased risk of PCS.
    MeSH term(s) Humans ; Brain Concussion/complications ; Brain Concussion/diagnosis ; Brain Concussion/epidemiology ; Retrospective Studies ; Missed Diagnosis ; Chronic Pain/diagnosis ; Chronic Pain/epidemiology ; Chronic Pain/etiology ; Post-Concussion Syndrome/diagnosis ; Post-Concussion Syndrome/epidemiology ; Headache ; Emergency Service, Hospital ; Unconsciousness ; Motor Vehicles
    Language English
    Publishing date 2023-02-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2146393-1
    ISSN 2150-1149 ; 1533-3159
    ISSN (online) 2150-1149
    ISSN 1533-3159
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: Elevated and Slowed EEG Oscillations in Patients with Post-Concussive Syndrome and Chronic Pain Following a Motor Vehicle Collision.

    Buchanan, Derrick Matthew / Ros, Tomas / Nahas, Richard

    Brain sciences

    2021  Volume 11, Issue 5

    Abstract: 1) Background: Mild traumatic brain injury produces significant changes in neurotransmission including brain oscillations. We investigated potential quantitative electroencephalography biomarkers in 57 patients with post-concussive syndrome and chronic ... ...

    Abstract (1) Background: Mild traumatic brain injury produces significant changes in neurotransmission including brain oscillations. We investigated potential quantitative electroencephalography biomarkers in 57 patients with post-concussive syndrome and chronic pain following motor vehicle collision, and 54 healthy nearly age- and sex-matched controls. (2) Methods: Electroencephalography processing was completed in MATLAB, statistical modeling in SPSS, and machine learning modeling in Rapid Miner. Group differences were calculated using current-source density estimation, yielding whole-brain topographical distributions of absolute power, relative power and phase-locking functional connectivity. Groups were compared using independent sample Mann-Whitney U tests. Effect sizes and Pearson correlations were also computed. Machine learning analysis leveraged a post hoc supervised learning support vector non-probabilistic binary linear kernel classification to generate predictive models from the derived EEG signatures. (3) Results: Patients displayed significantly elevated and slowed power compared to controls: delta (
    Language English
    Publishing date 2021-04-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2651993-8
    ISSN 2076-3425
    ISSN 2076-3425
    DOI 10.3390/brainsci11050537
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Irritable bowel syndrome: common integrative medicine perspectives.

    Nahas, Richard

    Chinese journal of integrative medicine

    2011  Volume 17, Issue 6, Page(s) 410–413

    Abstract: Previous reviews have highlighted complementary and alternative medicine therapies that are used to treat irritable bowel syndrome (IBS) based on published clinical trial data. Here the author describes and comments on a number of potentially relevant ... ...

    Abstract Previous reviews have highlighted complementary and alternative medicine therapies that are used to treat irritable bowel syndrome (IBS) based on published clinical trial data. Here the author describes and comments on a number of potentially relevant factors that have been commonly emphasized by practitioners who treat IBS and patients who have the disease. They include gluten and other food allergies, the candida syndrome and biofilm, interference fields and post-infectious IBS, as well as mind-body factors.
    MeSH term(s) Food Hypersensitivity/complications ; Food Hypersensitivity/immunology ; Glutens/immunology ; Humans ; Integrative Medicine ; Irritable Bowel Syndrome/complications ; Irritable Bowel Syndrome/microbiology ; Irritable Bowel Syndrome/pathology ; Irritable Bowel Syndrome/therapy ; Mind-Body Therapies ; Wound Healing
    Chemical Substances Glutens (8002-80-0)
    Language English
    Publishing date 2011-06-10
    Publishing country China
    Document type Journal Article ; Review
    ZDB-ID 2171254-2
    ISSN 1993-0402 ; 1672-0415
    ISSN (online) 1993-0402
    ISSN 1672-0415
    DOI 10.1007/s11655-011-0759-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Light-Activated Synthetic Rotary Motors in Lipid Membranes Induce Shape Changes Through Membrane Expansion.

    Qutbuddin, Yusuf / Guinart, Ainoa / Gavrilović, Svetozar / Al Nahas, Kareem / Feringa, Ben L / Schwille, Petra

    Advanced materials (Deerfield Beach, Fla.)

    2024  Volume 36, Issue 16, Page(s) e2311176

    Abstract: Membranes are the key structures to separate and spatially organize cellular systems. Their rich ...

    Abstract Membranes are the key structures to separate and spatially organize cellular systems. Their rich dynamics and transformations during the cell cycle are orchestrated by specific membrane-targeted molecular machineries, many of which operate through energy dissipation. Likewise, man-made light-activated molecular rotary motors have previously shown drastic effects on cellular systems, but their physical roles on and within lipid membranes remain largely unexplored. Here, the impact of rotary motors on well-defined biological membranes is systematically investigated. Notably, dramatic mechanical transformations are observed in these systems upon motor irradiation, indicative of motor-induced membrane expansion. The influence of several factors on this phenomenon is systematically explored, such as motor concentration and membrane composition., Membrane fluidity is found to play a crucial role in motor-induced deformations, while only minor contributions from local heating and singlet oxygen generation are observed. Most remarkably, the membrane area expansion under the influence of the motors continues as long as irradiation is maintained, and the system stays out-of-equilibrium. Overall, this research contributes to a comprehensive understanding of molecular motors interacting with biological membranes, elucidating the multifaceted factors that govern membrane responses and shape transitions in the presence of these remarkable molecular machines, thereby supporting their future applications in chemical biology.
    MeSH term(s) Humans ; Cell Membrane/chemistry ; Lipids
    Chemical Substances Lipids
    Language English
    Publishing date 2024-01-18
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.202311176
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Complementary and alternative medicine approaches to blood pressure reduction: An evidence-based review.

    Nahas, Richard

    Canadian family physician Medecin de famille canadien

    2008  Volume 54, Issue 11, Page(s) 1529–1533

    Abstract: ... reviews supports the blood pressure-lowering effects of coenzyme Q10, polyphenol-rich dark chocolate ...

    Abstract ABSTRACTOBJECTIVETo review the evidence supporting complementary and alternative medicine approaches used in the treatment of hypertension.QUALITY OF EVIDENCEMEDLINE and EMBASE were searched from January 1966 to May 2008 combining the key words hypertension or blood pressure with acupuncture, chocolate, cocoa, coenzyme Q10, ubiquinone, melatonin, vitamin D, meditation, and stress reduction. Clinical trials, prospective studies, and relevant references were included.MAIN MESSAGEEvidence from systematic reviews supports the blood pressure-lowering effects of coenzyme Q10, polyphenol-rich dark chocolate, Qigong, slow breathing, and transcendental meditation. Vitamin D deficiency is associated with hypertension and cardiovascular risk; supplementation lowered blood pressure in 2 trials. Acupuncture reduced blood pressure in 3 trials; in 1 of these it was no better than an invasive placebo. Melatonin was effective in 2 small trials, but caution is warranted in patients taking pharmacotherapy.CONCLUSIONSeveral complementary and alternative medicine therapies can be considered as part of an evidence-based approach to the treatment of hypertension. The potential benefit of these interventions warrants further research using cardiovascular outcomes.
    MeSH term(s) Cacao ; Complementary Therapies ; Dietary Supplements ; Humans ; Hypertension/therapy ; Micronutrients
    Chemical Substances Micronutrients
    Language English
    Publishing date 2008-11-12
    Publishing country Canada
    Document type Journal Article ; Review
    ZDB-ID 603565-6
    ISSN 1715-5258 ; 0008-350X
    ISSN (online) 1715-5258
    ISSN 0008-350X
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Not enough vitamin D coverage.

    Nahas, Richard

    Canadian family physician Medecin de famille canadien

    2007  Volume 53, Issue 12, Page(s) 2104–2105

    MeSH term(s) Canada/epidemiology ; Family Practice/methods ; Humans ; Incidence ; Vitamin D/supply & distribution ; Vitamin D/therapeutic use ; Vitamin D Deficiency/epidemiology ; Vitamin D Deficiency/prevention & control ; Vitamins/supply & distribution ; Vitamins/therapeutic use
    Chemical Substances Vitamins ; Vitamin D (1406-16-2)
    Language English
    Publishing date 2007-12-12
    Publishing country Canada
    Document type Comment ; Letter
    ZDB-ID 603565-6
    ISSN 1715-5258 ; 0008-350X
    ISSN (online) 1715-5258
    ISSN 0008-350X
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Changes in the Pattern of Superficial Lymphatic Drainage of the Abdomen after Abdominoplasty.

    Bassalobre, Milena / Liebano, Richard Eloin / da Silva, Milla Pompilio / Castiglioni, Mário Luiz Vieira / Sadala, Adria Yared / Ferreira, Lydia Masako / Nahas, Fabio Xerfan

    Plastic and reconstructive surgery

    2022  Volume 149, Issue 6, Page(s) 1106e–1113e

    Abstract: Background: The changes in the pattern of lymphatic drainage of the superficial abdominal wall after abdominoplasty are still unknown. These changes may increase the risk of numerous complications, including seroma formation. Depending on the ... ...

    Abstract Background: The changes in the pattern of lymphatic drainage of the superficial abdominal wall after abdominoplasty are still unknown. These changes may increase the risk of numerous complications, including seroma formation. Depending on the alterations, the manual lymphatic drainage technique should be modified in postoperative patients. The aim of this study was to map the pattern of lymphatic drainage of the superficial infraumbilical abdominal wall after abdominoplasty.
    Methods: Twenty women with indications for abdominoplasty were selected in the Plastic Surgery Division of the Federal University of São Paulo. Intradermal lymphoscintigraphy with dextran 500-99m-technetium was performed in 20 female patients in the preoperative phase and 1 and 6 months after abdominoplasty to evaluate superficial lymphatic drainage of the abdominal wall.
    Results: Before surgery, all patients presented with abdominal lymphatic drainage toward the inguinal lymph nodes. One and 6 months after abdominoplasty, only 15 percent exhibited the same drainage pathway. Drainage toward the axillary lymph node chain occurred in 65 percent of the patients, 10 percent displayed a drainage pathway toward both the axillary and inguinal lymph nodes, and lymphatic drainage was indeterminate in 10 percent of the cases.
    Conclusions: A significant change in lymphatic drainage pathway occurred in the infraumbilical region after abdominoplasty. The axillary drainage path was predominant after the operation, in contrast to the inguinal path observed in the preoperative period. However, 35 percent of cases exhibited alternative drainage. No significant changes were documented between 1 and 6 months postoperatively.
    Clinical question/level of evidence: Therapeutic, IV.
    MeSH term(s) Abdominal Wall/surgery ; Abdominoplasty/adverse effects ; Abdominoplasty/methods ; Axilla/surgery ; Female ; Humans ; Lymph Nodes/surgery ; Lymphoscintigraphy
    Language English
    Publishing date 2022-04-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208012-6
    ISSN 1529-4242 ; 0032-1052 ; 0096-8501
    ISSN (online) 1529-4242
    ISSN 0032-1052 ; 0096-8501
    DOI 10.1097/PRS.0000000000009114
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Optimized Acute Treatment of Migraine Is Associated With Greater Productivity in People With Migraine: Results From the Chronic Migraine Epidemiology and Outcomes (CaMEO) Study.

    Buse, Dawn C / Nahas, Stephanie J / Stewart, Walter Buzz F / Armand, Cynthia E / Reed, Michael L / Fanning, Kristina M / Manack Adams, Aubrey / Lipton, Richard B

    Journal of occupational and environmental medicine

    2023  Volume 65, Issue 4, Page(s) e261–e268

    Abstract: Objective: This study aimed to ascertain whether level of optimization of acute treatment of migraine is related to work productivity across the spectrum of migraine.: Methods: Data were from the Chronic Migraine Epidemiology and Outcomes (CaMEO) ... ...

    Abstract Objective: This study aimed to ascertain whether level of optimization of acute treatment of migraine is related to work productivity across the spectrum of migraine.
    Methods: Data were from the Chronic Migraine Epidemiology and Outcomes (CaMEO) Study, an internet-based longitudinal survey. Respondents with migraine who reported full-time employment and use of ≥1 acute prescription medication for migraine were included. We determined relationships among lost productive time (LPT; measured with the Migraine Disability Assessment Scale), acute treatment optimization (Migraine Treatment Optimization Questionnaire- ), and monthly headache days (MHDs).
    Results: There was a direct relationship between LPT and MHD category. Greater acute treatment optimization was associated with lower total LPT, less absenteeism, and less presenteeism within each MHD category.
    Conclusions: Optimizing acute treatment for migraine may reduce LPT in people with migraine and reduce indirect costs.
    MeSH term(s) Humans ; Cross-Sectional Studies ; Migraine Disorders/drug therapy ; Migraine Disorders/epidemiology ; Surveys and Questionnaires ; Efficiency ; Longitudinal Studies
    Language English
    Publishing date 2023-01-25
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 1223932-x
    ISSN 1536-5948 ; 1076-2752
    ISSN (online) 1536-5948
    ISSN 1076-2752
    DOI 10.1097/JOM.0000000000002801
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Risk factors for migraine disease progression: a narrative review for a patient-centered approach.

    Lipton, Richard B / Buse, Dawn C / Nahas, Stephanie J / Tietjen, Gretchen E / Martin, Vincent T / Löf, Elin / Brevig, Thomas / Cady, Roger / Diener, Hans-Christoph

    Journal of neurology

    2023  Volume 270, Issue 12, Page(s) 5692–5710

    Abstract: Background: In individuals with migraine, attacks may increase in frequency, severity, or both. Preventing migraine progression has emerged as a treatment goal in headache subspecialty practice, but there may be less awareness in general neurology or ... ...

    Abstract Background: In individuals with migraine, attacks may increase in frequency, severity, or both. Preventing migraine progression has emerged as a treatment goal in headache subspecialty practice, but there may be less awareness in general neurology or primary care settings where most people with migraine who seek treatment consult. Herein, we review the definition of and risk factors for migraine progression and consider strategies that could reduce its risk.
    Methods: A group of headache expert healthcare professionals, clinicians, and researchers reviewed published evidence documenting factors associated with increased or decreased rates of migraine progression and established expert opinions for disease management recommendations. Strength of evidence was rated as good, moderate, or based solely on expert opinion, using modified criteria for causation developed by AB Hill.
    Results: Migraine progression is commonly operationally defined as the transition from ≤ 15 to ≥ 15 monthly headache days among people with migraine; however, this does not necessarily constitute a fundamental change in migraine biology and other definitions should be considered. Established and theoretical key risk factors for migraine progression were categorized into five domains: migraine disease characteristics, treatment-related factors, comorbidities, lifestyle/exogenous factors, and demographic factors. Within these domains, good evidence supports the following risk factors: poorly optimized acute headache treatment, cutaneous allodynia, acute medication overuse, selected psychiatric symptoms, extra-cephalic chronic pain conditions, metabolism-related comorbidities, sleep disturbances, respiratory conditions, former/current high caffeine intake, physical inactivity, financial constraints, tobacco use, and personal triggers as risk factors. Protective actions that may mitigate migraine progression are sparsely investigated in published literature; our discussion of these factors is primarily based on expert opinion.
    Conclusions: Recognizing risk factors for migraine progression will allow healthcare providers to suggest protective actions against migraine progression (Supplementary Fig. 1). Intervention studies are needed to weight the risk factors and test the clinical benefit of hypothesized mitigation strategies that emerge from epidemiological evidence.
    MeSH term(s) Humans ; Migraine Disorders/drug therapy ; Chronic Disease ; Risk Factors ; Headache ; Disease Progression ; Patient-Centered Care
    Language English
    Publishing date 2023-08-24
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 187050-6
    ISSN 1432-1459 ; 0340-5354 ; 0012-1037 ; 0939-1517 ; 1619-800X
    ISSN (online) 1432-1459
    ISSN 0340-5354 ; 0012-1037 ; 0939-1517 ; 1619-800X
    DOI 10.1007/s00415-023-11880-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Assaying Radiosensitivity of Ataxia-Telangiectasia.

    Hu, Hailiang / Nahas, Shareef / Gatti, Richard A

    Methods in molecular biology (Clifton, N.J.)

    2017  Volume 1599, Page(s) 1–11

    Abstract: Ataxia-Telangiectasia (A-T) is a prototypical genomic instability disorder with multi-organ deficiency and it is caused by the defective function of a single gene, ATM (Ataxia-Telangiectasia Mutated). Radiosensitivity, among the pleiotropic symptoms of A- ...

    Abstract Ataxia-Telangiectasia (A-T) is a prototypical genomic instability disorder with multi-organ deficiency and it is caused by the defective function of a single gene, ATM (Ataxia-Telangiectasia Mutated). Radiosensitivity, among the pleiotropic symptoms of A-T, reflects the basic physiological functions of ATM protein in the double strand break (DSB)-induced DNA damage response (DDR) and also restrains A-T patients from the conventional radiation therapy for their lymphoid malignancy. In this chapter, we describe two methods that have been developed in our lab to assess the radiosensitivity of A-T patients: (1) Colony Survival Assay (CSA) and (2) Flow Cytometry of phospho-SMC1 (FC-pSMC1). The establishment of these more rapid and reliable functional assays to measure the radiosensitivity, exemplified by A-T, would facilitate the diagnosis of other genomic instability genetic disorders as well as help the treatment options for most radiosensitive patients.
    Language English
    Publishing date 2017
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-4939-6955-5_1
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top