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https://www.readbyqxmd.com/read/29924418/glucocorticoid-exposure-and-fracture-risk-in-a-cohort-of-us-patients-with-selected-conditions
#1
A Balasubramanian, S W Wade, R A Adler, K Saag, N Pannacciulli, J R Curtis
PURPOSE: We evaluated systemic glucocorticoid exposure and fracture among patients with newly-diagnosed inflammatory and immune-modulated conditions. METHODS: Using administrative data, inception cohorts of RA, asthma/COPD, IBD, MS, lupus, and sarcoidosis patients age 18-64 years with benefits coverage ≥12 months before diagnosis (1/1/2005-12/31/2012) were followed to clinical fracture, cancer diagnosis, or 12/31/2012. Glucocorticoid users were new to therapy...
June 20, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29917001/prediction-accuracy-of-the-dynamic-structure-function-model-for-glaucoma-progression-using-contrast-sensitivity-perimetry-and-confocal-scanning-laser-ophthalmoscopy
#2
Koosha Ramezani, Iván Marín-Franch, Rongrong Hu, William H Swanson, Lyne Racette
PURPOSE: The purpose of this study was to determine whether combining a structural measure with contrast sensitivity perimetry (CSP), which has lower test-retest variability than static automated perimetry (SAP), reduces prediction error with two models of glaucoma progression. METHODS: In this retrospective analysis, eyes with 5 visits with rim area (RA), SAP and CSP measures were selected from two datasets. Twenty-six eyes with open-angle glaucoma were included in the analyses...
June 18, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29916151/recovery-of-ilmenite-mud-as-an-additive-in-commercial-portland-cements
#3
Manuel Contreras Llanes, Manuel Jesús Gázquez González, Silvia María Pérez Moreno, Juan Pedro Bolívar Raya
This work is focused on the manufacture of commercial cement using as additive ilmenite mud, a waste generated during TiO2 pigment production. The cements were produced by adding different proportions of mud (2.5, 5 and 10 wt%) to ordinary Portland cement (OPC). The ilmenite mud and the ilmenite mud cements (IMCs) were characterised physico-chemically by X-ray fluorescence (XRF), inductively coupled plasma mass spectrometry (ICP-MS) and X-ray diffraction (XRD). Moreover, the technological properties of the IMCs were evaluated and compared with a reference material (OPC)...
June 19, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29890139/anti-melanogenic-activity-of-schaftoside-in-rhizoma-arisaematis-by-increasing-autophagy-in-b16f1-cells
#4
Pan Soo Kim, Ji Hyun Shin, Doo Sin Jo, Dong Woon Shin, Dong-Hwa Choi, Woo Jung Kim, Kyuhee Park, Jin Kyu Kim, Chul Gue Joo, Jong Suk Lee, Yongmun Choi, Yong Won Shin, Joong Jin Shin, Hong Bae Jeon, Jin-Ho Seo, Dong-Hyung Cho
Skin pigmentation involves multiple processes, including melanin synthesis, transport, and melanosome release. Melanin content determines skin color and protects against UV radiation-induced damage. Autophagy is a cooperative process between autophagosomes and lysosomes that degrades cellular components and organelles. In the present study, B16F1 cells were treated with Rhizoma Arisaematis extract (RA) and assessed for pigmentation and autophagy regulation. RA treatment suppressed the α-MSH-stimulated increase of melanogenesis and down-regulated the expression of tyrosinase and TRP1 proteins in B16F1 cells...
June 8, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29890138/profiling-of-bioactive-lipids-in-different-dendritic-cell-subsets-using-an-improved-multiplex-quantitative-lc-ms-ms-method
#5
Mai Ohba, Kazuko Saeki, Tomoaki Koga, Toshiaki Okuno, Yuichi Kobayashi, Takehiko Yokomizo
Lipids are an energy source and key components of the cell membrane; however, they are also bioactive mediators of physiological and pathophysiological phenomena. Quantification of bioactive lipids is not easy because they have diverse chemical properties and are present in trace amounts. Here, we improved a multiplex method of quantifying bioactive lipids, thereby enabling measurement of 90 compounds simultaneously. We then used this system to quantify bioactive lipids produced by two subsets of dendritic cells (DCs): all-trans retinoic acid-treated DCs (RA-DCs) (a type of tolerogenic DC (tDC)) and conventional DCs (cDCs)...
June 8, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29886354/remodeling-of-the-hdl-proteome-with-treatment-response-to-abatacept-or-adalimumab-in-the-ample-trial-of-patients-with-rheumatoid-arthritis
#6
C Charles-Schoeman, G B Gugiu, H Ge, A Shahbazian, Y Y Lee, X Wang, D E Furst, V K Ranganath, M Maldonado, Terry Lee, S T Reddy
BACKGROUND AND AIMS: To evaluate changes in the high-density lipoprotein (HDL) proteome and HDL function in active rheumatoid arthritis (RA) patients initiating therapy with abatacept or adalimumab in the Abatacept Versus Adalimumab Comparison in Biologic-Naïve RA Subjects with Background Methotrexate (AMPLE) study. METHODS: Ultra high-pressure liquid chromatography (UHPLC) coupled with ion mobility mass spectrometry (LC-IM-MS) was used to analyze proteins associated with immunoaffinity-captured HDL from plasma of 30 patients with RA randomized to either abatacept (n = 15) or adalimumab (n = 15) therapy...
April 17, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29886217/contemporary-results-of-surgical-management-of-peripheral-mycotic-aneurysms
#7
Gg Salzler, B Long, Ed Avgerinos, Ra Chaer, S Leers, E Hager, Ms Makaroun, Mh Eslami
OBJECTIVE: Mycotic aneurysms of the extremities occur infrequently but can cause severe life and limb complications. Traditional treatment typically includes debridement and revascularization, though in select patients ligation may be well tolerated. We reviewed our experience with these aneurysms treated with these two modalities. METHODS: A retrospective review of patients treated for peripheral mycotic aneurysms at one institution from January 2005 to December 2015 was performed under an Institutional Review Board-approved protocol...
June 7, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29884228/elevated-levels-of-plasma-symmetric-dimethylarginine-and-increased-arginase-activity-as-potential-indicators-of-cardiovascular-comorbidity-in-rheumatoid-arthritis
#8
Unnikrishnan M Chandrasekharan, Zeneng Wang, Yuping Wu, W H Wilson Tang, Stanley L Hazen, Sihe Wang, M Elaine Husni
BACKGROUND: Rheumatoid arthritis (RA) patients are at high risk of developing cardiovascular disease (CVD). In RA, chronic inflammation may lead to endothelial dysfunction, an early indicator of CVD, owing to diminished nitric oxide (NO) production. Because L-arginine is the sole precursor of NO, we hypothesized that levels of L-arginine metabolic products reflecting NO metabolism are altered in patients with RA. METHODS: Plasma samples from patients with RA (n = 119) and age- and sex-matched control subjects (n = 238) were used for this study...
June 8, 2018: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29884068/microwave-extraction-of-salvia-officinalis-essential-oil-and-assessment-of-its-gc-ms-identification-and-protective-effects-versus-vanadium-induced-nephrotoxicity-in-wistar-rats-models
#9
Fatma Ghorbel Koubaa, Raed Abdennabi, Ahlem Soussi Ben Salah, Abdelfattah El Feki
In this study, we assess the impact of Salvia officinalis essential oil on renal toxicity induced by vanadium in rats. The animals were exposed to either ammonium metavanadate (5 mg/kg body weight) or the combination of vanadium and S. officinalis essential oil (15 mg EO/kg body weight) for 10 days. Vanadium induced significant renal damage, demonstrated by increased plasma levels of urea and creatinine. A marked increase in lipid peroxidation markers and carbonyl protein levels with a significant decrease in enzymatic antioxidants (SOD), catalase (CAT), and glutathione peroxidase (GPx) was also observed in vanadium-treated rats...
June 8, 2018: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29863076/5-hydroxy-2-methylpyridine-isolated-from-cigarette-smoke-condensate-aggravates-collagen-induced-arthritis-in-mice
#10
Masafumi Takeno, Shinya Kitagawa, Junpei Yamanaka, Mayumi Teramoto, Haruka Tomita, Naohiro Shirai, Saotomo Itoh, Shigeaki Hida, Kazuichi Hayakawa, Kikuo Onozaki, Takemasa Takii
The risk of rheumatoid arthritis (RA) is linked to environmental and genetic factors. Cigarette smoking is an established environmental risk factor for the disease that contributes to its development and severity. Previously, we found that cigarette smoke condensate (CSC), both mainstream and sidestream, aggravates collagen type II-induced arthritis (CIA), which was observed following either intraperitoneal inoculation or nasal exposure. In the present study, we aimed to identify the compound in CSC, which aggravates CIA...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29857511/sphingolipidomic-profiling-of-rat-serum-by-uplc-q-tof-ms-application-to-rheumatoid-arthritis-study
#11
Fanghui Qu, Hongyang Zhang, Min Zhang, Ping Hu
Sphingolipids (SPLs) are biologically important molecules, but the structural diversity and complexity of SPLs brings significant analytical challenges for their study. In this paper, we have developed an UPLC-Q-TOF-MS-based sphingolipidomic approach for the comprehensive identification and quantification of SPLs in rat serum. A total of 120 SPLs covering seven subcategories were identified for the first time. Method validations including linearity, sensitivity, reproducibility, and recovery were also evaluated...
May 31, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29852297/the-human-csf-pain-proteome
#12
Payam Emami Khoonsari, Elena Ossipova, Johan Lengqvist, Camilla I Svensson, Eva Kosek, Diana Kadetoff, Per-Johan Jakobsson, Kim Kultima, Jon Lampa
Chronic pain represents one of the major medical challenges in the 21st century, affecting >1.5 billion of the world population. Overlapping and heterogenous symptoms of various chronic pain conditions complicate their diagnosis, emphasizing the need for more specific biomarkers to improve the diagnosis and understand the disease mechanisms. We have here investigated proteins found in human CSF with respect to known "pain" genes and in a cohort of patients with dysfunctional pain (fibromyalgia, FM), inflammatory pain (rheumatoid arthritis patients, RA) and non-pain controls utilized semi-quantitative proteomics using mass spectrometry (MS) to explore quantitative differences between these cohorts of patients...
May 28, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29844438/association-of-a-rare-variant-of-the-tnfsf13b-gene-with-susceptibility-to-rheumatoid-arthritis-and-systemic-lupus-erythematosus
#13
David González-Serna, Lourdes Ortiz-Fernández, Sofía Vargas, Antonio García, Enrique Raya, Benjamín Fernández-Gutierrez, Francisco Javier López-Longo, Alejandro Balsa, Isidoro González-Álvaro, Javier Narvaez, Carmen Gómez-Vaquero, José Mario Sabio, Rosa García-Portales, María Francisca González-Escribano, Carles Tolosa, Patricia Carreira, Lambertus Kiemeney, Marieke J H Coenen, Torsten Witte, Matthias Schneider, Miguel Ángel González-Gay, Javier Martín
A rare variant (BAFF-var) of the tumor necrosis factor superfamily 13b (TNFSF13B) gene has been recently associated with multiple sclerosis (MS) and systemic lupus erythematosus (SLE). The aim of this study was to investigate the association between TNFSF13B BAFF-var and susceptibility to rheumatoid arthritis (RA) and replicate that association in SLE. 6,218 RA patients, 2,575 SLE patients and 4,403 healthy controls from three different countries were included in the study. TNFSF13B BAFF-var was genotyped using TaqMan allelic discrimination assay...
May 29, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29794251/chemical-composition-and-antioxidant-activity-of-phenolic-compounds-and-essential-oils-from-calamintha-nepeta-l
#14
Nabyla Khaled Khodja, Lila Boulekbache, Fatima Chegdani, Karima Dahmani, Faiza Bennis, Khodir Madani
Background Essential oils, infusion and decoction extracts of Calamintha nepeta L. were evaluated for their bioactive substances (polyphenols and essential oils) and antioxidant activities. Methods The amounts of phenolic compounds were determined by colorimetric assays and identified by high performance and liquid chromatography coupled with ultraviolet detector (HPLC-UV) method. The chemical composition of essential oils was determined by gas-chromatography coupled with mass spectrometry (GC/MS) method. For the evaluation of the antioxidant activity of essential oils and extracts, two different assays (reducing power and DPPH radical scavenging activity) were used...
May 24, 2018: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/29791948/multiple-sclerosis
#15
Bassem I Yamout, Raed Alroughani
Multiple sclerosis (MS) is a chronic central nervous system inflammatory disease of autoimmune etiology, mediated by activated T cells with evolving evidence of a significant contribution from B cells and cells of the innate immune system. The disease is thought to be due to a complex interaction between different genetic and environmental factors. The prevalence of MS is rising all over the world, due on one hand to earlier diagnosis and prolonged survival, and on the other to a true increase in incidence of the disease...
April 2018: Seminars in Neurology
https://www.readbyqxmd.com/read/29789121/aire-is-not-essential-for-regulating-neuroinflammatory-disease-in-mice-transgenic-for-human-autoimmune-diseases-associated-mhc-class-ii-genes-hla-dr2b-and-hla-dr4
#16
Saisha A Nalawade, Niannian Ji, Itay Raphael, Andrew Pratt, Ellen Kraig, Thomas G Forsthuber
The human autoimmune disease-associated HLA alleles HLA-DR2b (DRB1*1501) and HLA-DR4 (DRB1*0401) are strongly linked to increased susceptibility for multiple sclerosis (MS) and rheumatoid arthritis (RA), respectively. The underlying mechanisms are not fully understood, but these MHC alleles may shape the repertoire of pathogenic T cells via central tolerance. The transcription factor autoimmune regulator (AIRE) promotes central T cell tolerance via ectopic expression of tissue-specific antigens (TSAs). Aire deficiency in humans causes autoimmune polyendocrinopathy syndrome type 1 (APS1), and Aire knockout mice (Aire-/- ) develop spontaneous autoimmune pathology characterized by multi-organ lymphocytic infiltrates...
May 14, 2018: Cellular Immunology
https://www.readbyqxmd.com/read/29774373/cardiovascular-system-changes-in-rheumatoid-arthritis-patients-with-continued-low-disease-activity
#17
Małgorzata Biskup, Wojciech Biskup, Maria Majdan, Bożena Targońska-Stępniak
Systemic inflammation and disease activity seem to contribute to excessive prevalence of cardiovascular (CV) diseases (CVDs) in patients with rheumatoid arthritis (RA). The objective of the study was to assess chosen CV parameters in RA patients who have continuous low disease activity. The study group consisted of 70 RA patients without known CVD and 33 healthy controls, of a comparable age. All RA patients had continued low disease activity (DAS28 ≤ 3.2) from 2 to 7 years. The groups were assessed for: blood pressure, serum amino-terminal pro-brain natriuretic peptide (NT-proBNP), carotid intima media thickness (cIMT), electrocardiography (ECG), ejection fraction (EJ) and diastolic dysfunction (E/A ratio) in echocardiography...
May 17, 2018: Rheumatology International
https://www.readbyqxmd.com/read/29768427/differential-effects-of-tnf-%C3%AE-and-il-1%C3%AE-on-the-control-of-metal-metabolism-and-cadmium-induced-cell-death-in-chronic-inflammation
#18
Paola Bonaventura, Aline Lamboux, Francis Albarède, Pierre Miossec
OBJECTIVE: Interleukin-1-beta (IL-1β) and tumour necrosis factor-alpha (TNF-α) are both monocyte-derived cytokines. Both cytokines have been previously described to exert a role in rheumatoid arthritis (RA) pathogenesis synergizing with other pro-inflammatory mediators, such as interleukin-17 (IL-17) on target cells, for the perpetuation of the inflammatory response (e.g. IL-6 production). In the context of experimental RA, Cd addition has an anti-proliferative and anti-inflammatory effect when associated to IL-17/TNF-α stimulation, due to its accumulation in synoviocytes...
2018: PloS One
https://www.readbyqxmd.com/read/29760711/selective-modulation-of-tnf-tnfrs-signaling-insights-for-multiple-sclerosis-treatment
#19
REVIEW
Valentina Pegoretti, Wia Baron, Jon D Laman, Ulrich L M Eisel
Autoimmunity develops when self-tolerance mechanisms are failing to protect healthy tissue. A sustained reaction to self is generated, which includes the generation of effector cells and molecules that destroy tissues. A way to restore this intrinsic tolerance is through immune modulation that aims at refurbishing this immunologically naïve or unresponsive state, thereby decreasing the aberrant immune reaction taking place. One major cytokine has been shown to play a pivotal role in several autoimmune diseases such as rheumatoid arthritis (RA) and multiple sclerosis (MS): tumor necrosis factor alpha (TNFα) modulates the induction and maintenance of an inflammatory process and it comes in two variants, soluble TNF (solTNF) and transmembrane bound TNF (tmTNF)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29750737/inter-and-intraindividual-variation-of-methylphenidate-concentrations-in-serum-and-saliva-of-patients-with-attention-deficit-hyperactivity-disorder
#20
Joshua Preiskorn, Sophie Studer, Reinhold Rauh, Richard Lukačin, Christoph Geffert, Christian Fleischhaker, Hans-Willi Clement, Eberhard Schulz, Monica Biscaldi
BackgroundTherapeutic drug monitoring (TDM) is becoming increasingly important in psychiatric therapy; especially in children. However, for several reasons, it cannot yet be implemented as a daily routine in clinical or outpatient settings. To evaluate new, non-invasive procedures; blood and saliva (oral fluid) samples were collected from patients with attention-deficit/hyperactivity disorder (ADHD) who were also being administered methylphenidate (MPH). The study's main purposes were to correlate MPH concentrations in serum and saliva between subjects; and to analyze intraindividual variation of serum concentration...
May 3, 2018: Therapeutic Drug Monitoring
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