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inflammation and muscle weakness

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https://www.readbyqxmd.com/read/28350642/increased-early-systemic-inflammation-in-icu-acquired-weakness-a-prospective-observational-cohort-study
#1
Esther Witteveen, Luuk Wieske, Tom van der Poll, Marike van der Schaaf, Ivo N van Schaik, Marcus J Schultz, Camiel Verhamme, Janneke Horn
OBJECTIVES: To investigate whether patients who develop ICU-acquired weakness have a different pattern of systemic inflammatory markers compared with critically ill patients who do not develop ICU-acquired weakness. DESIGN: Prospective observational cohort study. SETTING: Mixed medical-surgical ICU of a tertiary care hospital in the Netherlands. PATIENTS: Newly admitted critically ill patients, greater than or equal to 48 hours on mechanical ventilation with a nonneurologic ICU admission diagnosis, were included...
March 27, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28340105/morin-stain-detects-aluminum-containing-macrophages-in-macrophagic-myofasciitis-and-vaccination-granuloma-with-high-sensitivity-and-specificity
#2
Rati Chkheidze, Dennis K Burns, Charles L White, Diana Castro, Julie Fuller, Chunyu Cai
Macrophagic myofasciitis (MMF) is an inflammatory condition associated with the intramuscular (i.m.) injection of aluminum adjuvant-containing vaccines. It is clinically characterized by myalgia, weakness, and chronic fatigue and histologically by aggregates of cohesive macrophages with abundant basophilic, periodic acid-Schiff (PAS)-positive, diastase-resistant granules that percolate through the peri- and endomysium without eliciting substantial myofiber damage. The definitive diagnosis of MMF requires demonstration of aluminum within these macrophages...
March 15, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28315275/sigma-1-receptor-in-motoneuron-disease
#3
Renzo Mancuso, Xavier Navarro
Amyotrophic Lateral Sclerosis (ALS ) is a neurodegenerative disease affecting spinal cord and brain motoneurons , leading to paralysis and early death. Multiple etiopathogenic mechanisms appear to contribute in the development of ALS , including glutamate excitotoxicity, oxidative stress , protein misfolding, mitochondrial defects, impaired axonal transport, inflammation and glial cell alterations. The Sigma-1 receptor is highly expressed in motoneurons of the spinal cord, particularly enriched in the endoplasmic reticulum (ER) at postsynaptic cisternae of cholinergic C-terminals...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28294976/vitamins-and-microelement-bioavailability-in-different-stages-of-chronic-kidney-disease
#4
REVIEW
Magdalena Jankowska, Bolesław Rutkowski, Alicja Dębska-Ślizień
Chronic kidney disease (CKD) predisposes one to either deficiency or toxic excess of different micronutrients. The knowledge on micronutrients-specifically water-soluble vitamins and trace elements-in CKD is very limited. Consequently, current guidelines and recommendations are mostly based on expert opinions or poor-quality evidence. Abnormalities of micronutrient resources in CKD develop for several reasons. Dietary restrictions and anorexia lead to an insufficient micronutrient intake, while diuretics use and renal replacement therapy lead to their excessive losses...
March 15, 2017: Nutrients
https://www.readbyqxmd.com/read/28284832/prolonged-inhibition-of-inflammation-in-osteoarthritis-by-triamcinolone-acetonide-released-from-a-polyester-amide-microsphere-platform
#5
Imke Rudnik-Jansen, Sascha Colen, Julien Berard, Saskia Plomp, Ivo Que, Mattie van Rijen, Nina Woike, Annelies Egas, Gerjo van Osch, Erik van Maarseveen, Ken Messier, Alan Chan, Jens Thies, Laura Creemers
Controlled biomaterial-based corticosteroid release might circumvent multiple injections and the accompanying risks, such as hormone imbalance and muscle weakness, in osteoarthritic (OA) patients. For this purpose, microspheres were prepared from an amino acid-based polyester amide (PEA) platform and loaded with triamcinolone acetonide (TAA). TAA loaded microspheres were shown to release TAA for over 60days in PBS. Furthermore, the bioactivity lasted at least 28days, demonstrated by a 80-95% inhibition of PGE2 production using TNFα-stimulated chondrocyte culture, indicating inhibition of inflammation...
March 9, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28283597/overlapping-features-of-polymyositis-and-inclusion-body-myositis-in-hiv-infected-patients
#6
Thomas E Lloyd, Iago Pinal-Fernandez, E Harlan Michelle, Lisa Christopher-Stine, Katherine Pak, Ned Sacktor, Andrew L Mammen
OBJECTIVE: To characterize patients with myositis with HIV infection. METHODS: All HIV-positive patients with myositis seen at the Johns Hopkins Myositis Center from 2003 to 2013 were included in this case series. Muscle biopsy features, weakness pattern, serum creatine kinase (CK) level, and anti-nucleotidase 1A (NT5C1A) status of HIV-positive patients with myositis were assessed. RESULTS: Eleven of 1,562 (0.7%) patients with myositis were HIV-positive...
March 10, 2017: Neurology
https://www.readbyqxmd.com/read/28277343/statin-associated-autoimmune-myopathy-a-systematic-review-of-100-cases
#7
Salik Nazir, Saroj Lohani, Niranjan Tachamo, Dilliram Poudel, Anthony Donato
BACKGROUND: Statins are a group of drugs that reduce the levels of triglycerides and cholesterol in blood by inhibiting HMG-CoA reductase, an enzyme involved in rate limiting step in cholesterol synthesis. About 2-20% patients on statins develop toxic myopathies, which usually resolve on discontinuation of statin. More recently, an immune-mediated necrotizing myopathy has been found to be associated with statin use which in most cases requires treatment with immunosuppressants. OBJECTIVE: To perform a systematic review on published case reports and case series of statin-associated autoimmune myopathy...
April 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/28262570/peripheral-muscle-abnormalities-in-cystic-fibrosis-etiology-clinical-implications-and-response-to-therapeutic-interventions
#8
Mathieu Gruet, Thierry Troosters, Samuel Verges
Peripheral muscle dysfunction is an important systemic consequence of cystic fibrosis (CF) with major clinical implications, such as exercise intolerance and reduced quality of life. Evidence is now accumulating that lack of physical activity is unlikely to be the sole explanation for peripheral muscle dysfunction of patients with CF. Particularly, the demonstration of CFTR expression in both murine and human skeletal muscle suggests the potential implication of intrinsic CF-related factors. By combining data from both human and animal models, this review describes CF peripheral muscle abnormalities and critically reviews the advances in understanding the impact of the underlying mechanisms...
March 2, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28241090/plasma-exchange-for-guillain-barr%C3%A3-syndrome
#9
REVIEW
Sylvie Chevret, Richard Ac Hughes, Djillali Annane
BACKGROUND: Guillain-Barré syndrome (GBS) is an acute paralysing disease caused by peripheral nerve inflammation. This is an update of a review first published in 2001 and last updated in 2012. OBJECTIVES: To assess the effects of plasma exchange for treating GBS. SEARCH METHODS: On 18 January 2016 we searched the Cochrane Neuromuscular Specialised Register, CENTRAL, MEDLINE, and Embase. We also searched clinical trials registries. SELECTION CRITERIA: Randomised and quasi-randomised trials of plasma exchange versus sham exchange or supportive treatment, or comparing different regimens or techniques of plasma exchange...
February 27, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28207424/skeletal-muscle-wasting-new-role-of-nonclassical-renin-angiotensin-system
#10
Claudio Cabello-Verrugio, Juan C Rivera, Dominga Garcia
PURPOSE OF REVIEW: Skeletal muscle can be affected by many physiological and pathological conditions that contribute to the development of muscle weakness, including skeletal muscle loss, inflammatory processes, or fibrosis. Therefore, research into therapeutic treatment alternatives or alleviation of these effects on skeletal muscle is of great importance. RECENT FINDINGS: Recent studies have shown that angiotensin (1-7) [Ang-(1-7)] - a vasoactive peptide of the nonclassical axis in the renin-angiotensin system (RAS) - and its Mas receptor are expressed in skeletal muscle...
February 16, 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/28194428/identification-of-palmitoleic-acid-controlled-by-mtor-signaling-as-a-biomarker-of-polymyositis
#11
Geng Yin, Ying Wang, Xiao-Min Cen, Yuan Yang, Min Yang, Qi-Bing Xie
Polymyositis (PM) is a chronic disease characterized by muscle pain, weakness, and increase in muscle-related enzymes, accompanied with inflammations in lymphocytes. However, it is not well understood how the molecular alternations in lymphocytes contribute to the development of polymyositis. The mechanistic target of rapamycin (mTOR) signaling is the central regulator of metabolism and inflammation in mammalian cells. Based on previous studies, we proposed that mTOR signaling may control inflammatory reactions via lipid metabolism...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28111778/sporadic-inclusion-body-myositis-a-myodegenerative-disease-or-an-inflammatory-myopathy
#12
REVIEW
C C Weihl, A L Mammen
Sporadic inclusion body myositis (sIBM) is an insidious late-onset progressive myopathy that typically affects patients over the age of 50. Clinically, patients develop a characteristic pattern of weakness that affects the forearm flexors and knee extensors. Muscle biopsy, often utilized in the diagnosis, demonstrates a chronic myopathy with mixed pathologies harbouring intramyofiber protein inclusions and endomysial inflammation. The co-existence of these pathologic features (that is, inflammation and protein aggregation) has divided the field of sIBM research into two opposing (albeit slowly unifying) camps regarding disease pathogenesis...
February 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/28101144/histopathological-findings-in-systemic-sclerosis-related-myopathy-fibrosis-and-microangiopathy-with-lack-of-cellular-inflammation
#13
Claudio Corallo, Maurizio Cutolo, Nila Volpi, Daniela Franci, Margherita Aglianò, Antonio Montella, Chiara Chirico, Stefano Gonnelli, Ranuccio Nuti, Nicola Giordano
OBJECTIVES: The objective of this study was to identify specific histopathological features of skeletal muscle involvement in systemic sclerosis (SSc) patients. METHODS: A total of 35 out of 112 SSc-patients (32%, including 81% female and 68% diffuse scleroderma) presenting clinical, biological and electromyographic (EMG) features of muscle weakness, were included. Patients underwent vastus lateralis biopsy, assessed for individual pathologic features including fibrosis [type I collagen (Coll-I), transforming growth factor β (TGF-β)], microangiopathy [cluster of differentiation 31 (CD31), pro-angiogenic vascular endothelial growth factor A (VEGF-A), anti-angiogenic VEGF-A165b], immune/ inflammatory response [CD4, CD8, CD20, human leucocyte antigens ABC (HLA-ABC)], and membranolytic attack complex (MAC)...
January 2017: Therapeutic Advances in Musculoskeletal Disease
https://www.readbyqxmd.com/read/28067869/clinical-and-biological-markers-of-premature-aging-after-autologous-sct-in-childhood-cancer
#14
A Vatanen, M Hou, T Huang, O Söder, T Jahnukainen, M Kurimo, T H Ojala, T Sarkola, M Turanlahti, U M Saarinen-Pihkala, K Jahnukainen
The aim of this study was to analyze the prevalence of frailty and physical health limitations among long-term survivors of high-risk neuroblastoma (HR NBL) and to investigate whether frail health is associated with variables of cardiovascular function, markers of inflammation and telomere length. A national study cohort of 19 (median age 22, range 16-30 years) long-term (>10 years) HR NBL survivors was studied and the findings were compared with 20 age- and sex-matched controls. Frailty was defined as ⩾3 of the following conditions: low muscle mass, low energy expenditure, slow running and weakness...
January 9, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28066619/clinical-management-of-chronic-obstructive-pulmonary-disease-patients-with-muscle-dysfunction
#15
REVIEW
Joaquim Gea, Carme Casadevall, Sergi Pascual, Mauricio Orozco-Levi, Esther Barreiro
Muscle dysfunction is frequently observed in chronic obstructive pulmonary disease (COPD) patients, contributing to their exercise limitation and a worsening prognosis. The main factor leading to limb muscle dysfunction is deconditioning, whereas respiratory muscle dysfunction is mostly the result of pulmonary hyperinflation. However, both limb and respiratory muscles are also influenced by other negative factors, including smoking, systemic inflammation, nutritional abnormalities, exacerbations and some drugs...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28027337/association-of-albumin-levels-with-outcome-in-intravenous-immunoglobulin-treated-guillain-barr%C3%A3-syndrome
#16
Willem-Jan R Fokkink, Christa Walgaard, Krista Kuitwaard, Anne P Tio-Gillen, Pieter A van Doorn, Bart C Jacobs
Importance: There is an urgent need for biomarkers to monitor treatment efficacy and anticipate outcome in patients with Guillain-Barré syndrome (GBS). Objective: To assess whether there is an association between serum albumin levels, a widely used and relatively easily measurable biomarker of health and inflammation, and the clinical course and outcome of GBS in patients treated with intravenous immunoglobulin (IVIG). Design, Setting, and Participants: We used serum samples derived from a cohort of patients with GBS admitted to hospitals across the Netherlands participating in national GBS studies from May 5, 1986, through August 2, 2000...
February 1, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28025386/tweak-up-regulates-endothelin-1-system-in-mouse-and-human-endothelial-cells
#17
Patricia Martínez-Miguel, Diana Medrano-Andrés, Mercedes Griera-Merino, Alberto Ortiz, Manuel Rodríguez-Puyol, Diego Rodríguez-Puyol, Susana López-Ongil
AIM: To analyse the ability of TWEAK to modify the endothelin system, particularly endothelin-1 (ET-1) and endothelin-converting enzyme-1 (ECE-1), studying the intracellular mechanisms implied. TNF-like weak inducer of apoptosis (TWEAK) is a member of TNF superfamily; it has different biological functions such as inflammation, angiogenesis, proliferation, and apoptosis. TWEAK and fibroblast growth-factor-inducible 14 are expressed in different cell types, including endothelial and smooth muscle cells...
February 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/27996031/mild-intrauterine-hypoperfusion-reproduces-neurodevelopmental-disorders-observed-in-prematurity
#18
Makiko Ohshima, Jacques-Olivier Coq, Kentaro Otani, Yorito Hattori, Yuko Ogawa, Yoshiaki Sato, Mariko Harada-Shiba, Masafumi Ihara, Masahiro Tsuji
Severe intrauterine ischemia is detrimental to the developing brain. The impact of mild intrauterine hypoperfusion on neurological development, however, is still unclear. We induced mild intrauterine hypoperfusion in rats on embryonic day 17 via arterial stenosis with metal microcoils wrapped around the uterine and ovarian arteries. All pups were born with significantly decreased birth weights. Decreased gray and white matter areas were observed without obvious tissue damage. Pups presented delayed newborn reflexes, muscle weakness, and altered spontaneous activity...
December 20, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27991408/do-dermatomyositis-and-polymyositis-affect-similar-thigh-muscles-a-comparative-mri-based-study
#19
Nicolo Pipitone, Antonella Notarnicola, Gabriele Levrini, Lucia Spaggiari, Arnaldo Scardapane, Florenzo Iannone, Giovanni Lapadula, Pierpaolo Pattacini, Giulio Zuccoli, Carlo Salvarani
OBJECTIVES: Dermatomyositis (DM) and polymyositis (PM) commonly cause weakness of the thigh muscles. However, it is debated whether DM and PM affect similar thigh muscles. Muscle oedema on fat-suppressed MRI sequences is thought to represent active inflammation. In this study, we aimed to assess which thigh muscle groups are preferentially inflamed in DM and PM, respectively, using short-tau inversion-recovery MRI sequences. METHODS: We analysed 71 patients from 2 Rheumatology centres, 31 with DM and 40 with PM diagnosed according to the Bohan and Peter criteria...
November 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27986526/nontraumatic-isolated-posterior-interosseous-nerve-palsy-reinterpretation-of-electrodiagnostic-studies-and-mris
#20
Andrés A Maldonado, Kimberly K Amrami, Michelle L Mauermann, Robert J Spinner
INTRODUCTION: Different hypotheses have been proposed for the pathophysiology of posterior interosseous nerve (PIN) palsy, namely compression, nerve inflammation, and fascicular constriction. We hypothesized that critical reinterpretation of electrodiagnostic (EDX) studies and MRIs of patients with a diagnosis of PIN palsy could provide insight into the pathophysiology and treatment. MATERIALS AND METHODS: We retrospectively reviewed patients with a diagnosis of nontraumatic PIN palsy and an upper extremity EDX and MRI...
February 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
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