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https://www.readbyqxmd.com/read/28918138/characterizing-effects-of-feed-restriction-and-glucagon-like-peptide-2-administration-on-biomarkers-of-inflammation-and-intestinal-morphology
#1
S K Kvidera, E A Horst, M V Sanz Fernandez, M Abuajamieh, S Ganesan, P J Gorden, H B Green, K M Schoenberg, W E Trout, A F Keating, L H Baumgard
Inadequate feed consumption reduces intestinal barrier function in both ruminants and monogastrics. Objectives were to characterize how progressive feed restriction (FR) affects inflammation, metabolism, and intestinal morphology, and to investigate if glucagon-like peptide 2 (GLP2) administration influences the aforementioned responses. Twenty-eight Holstein cows (157 ± 9 d in milk) were enrolled in 2 experimental periods. Period 1 [5 d of ad libitum (AL) feed intake] served as baseline for period 2 (5 d), during which cows received 1 of 6 treatments: (1) 100% of AL feed intake (AL100; n = 3), (2) 80% of AL feed intake (n = 5), (3) 60% of AL feed intake (n = 5), (4) 40% of AL feed intake (AL40; n = 5), (5) 40% of AL feed intake + GLP2 administration (AL40G; 75 µg/kg of BW s...
September 13, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28916410/kinetic-stability-and-sequence-structure-studies-of-urine-derived-bence-jones-proteins-from-multiple-myeloma-and-light-chain-amyloidosis-patients
#2
Luis M Blancas-Mejía, Emily B Martin, Angela Williams, Jonathan S Wall, Marina Ramirez-Alvarado
It is now accepted that the ability of a protein to form amyloid fibrils could be associated both kinetic and thermodynamic protein folding parameters. A recent study from our laboratory using recombinant full-length (encompassing the variable and constant domain) immunoglobulin light chains found a strong kinetic control of the protein unfolding for these proteins. In this study, we are extending our analysis by using urine-derived Bence Jones proteins (BJPs) from five patients with light chain (AL) amyloidosis and four patients with multiple myeloma (MM)...
September 1, 2017: Biophysical Chemistry
https://www.readbyqxmd.com/read/28910817/the-lung-in-dysregulated-states-of-humoral-immunity
#3
Yurdagül Uzunhan, Florence Jeny, Marianne Kambouchner, Morgane Didier, Diane Bouvry, Hilario Nunes, Jean-François Bernaudin, Dominique Valeyre
In common variable immunodeficiency, lung manifestations are related to different mechanisms: recurrent pneumonias due to encapsulated bacteria responsible for diffuse bronchiectasis, diffuse infiltrative pneumonia with various patterns, and lymphomas, mostly B cell extranodal non-Hodgkin type. The diagnosis relies on significant serum Ig deficiency and the exclusion of any primary or secondary cause. Histopathology may be needed. Immunoglobulin (IgG) replacement is crucial to prevent infections and bronchiectasis...
September 15, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28906148/hip-and-knee-arthroplasty-are-common-among-patients-with-transthyretin-cardiac-amyloidosis-occurring-years-before-cardiac-amyloid-diagnosis-can-we-identify-affected-patients-earlier
#4
Jonah Rubin, Julissa Alvarez, Sergio Teruya, Adam Castano, Ronald A Lehman, Mark Weidenbaum, Jeffrey A Geller, Stephen Helmke, Mathew S Maurer
Transthyretin cardiac amyloidosis (ATTR-CA) causes a restrictive cardiomyopathy in older adults, often diagnosed at advanced stages when emerging therapies in late phase clinical trials may not have clinical benefit. This investigation aimed to detect clinical entities that may provide more advanced warning of ATTR-CA. Since ATTR preferentially deposits in ligaments, tendons, and articular cartilage, we hypothesized that ATTR-CA patients have a greater prevalence of total hip (THA) and knee (TKA) arthroplasties compared with the general population, and that arthroplasty occurs significantly before ATTR-CA diagnosis...
September 14, 2017: Amyloid: the International Journal of Experimental and Clinical Investigation
https://www.readbyqxmd.com/read/28903572/biomarkers-in-immunoglobulin-light-chain-amyloidosis
#5
Z Kufová, T Sevcikova, K Growkova, P Vojta, J Filipová, Z Adam, L Pour, M Penka, R Rysava, P Němec, L Brozova, P Vychytilova, A Jurczyszyn, S Grosicki, A Barchnicka, M Hajdúch, M Simicek, R Hájek
Immunoglobulin light chain amyloidosis (AL amyloidosis - ALA) is a monoclonal gammopathy characterized by presence of aberrant plasma cells producing amyloidogenic immunoglobulin light chains. This leads to formation of amyloid fibrils in various organs and tissues, mainly in heart and kidney, and causes their dysfunction. As amyloid depositing in target organs is irreversible, there is a big effort to identify biomarker that could help to distinguish ALA from other monoclonal gammopathies in the early stages of disease, when amyloid deposits are not fatal yet...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28903570/czech-registry-of-monoclonal-gammopathies-technical-solution-data-collection-and-visualisation
#6
L Brozova, D Schwarz, I Snabl, J Kalina, B Pavlickova, M Komenda, J Jarkovský, P Němec, D Horinek, Z Stefanikova, L Pour, R Hájek, V Maisnar
BACKGROUND: The Registry of Monoclonal Gammopathies (RMG) was established by the Czech Myeloma Group in 2007. RMG is a registry designed for the collection of clinical data concerning diagnosis, treatment, treatment results and survival of patients with monoclonal gammopathies. Data on patients with monoclonal gammopathy of undetermined significance (MGUS), Waldenström macroglobulinaemia (WM), multiple myeloma (MM) or primary AL ("amyloid light-chain") amyloidosis are collected in the registry...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28899812/the-starving-brain-overfed-meets-undernourished-in-the-pathology-of-mild-cognitive-impairment-mci-and-alzheimer-s-disease-ad
#7
REVIEW
Kelly J Gibas
Type II Diabetes affects 400 million people worldwide (IDF, 2013). The pathology is paradoxical: internal starvation activated by overfeeding. Hyperinsulinemic impairments of glucose homeostasis are treated with anti-hyperglycemics exacerbating cell starvation, inducing hypoglycemia and raising respiratory quotient. Reductions in hyperglycemia are achieved at the expense of glucose dependency and metabolic inflexibility (Gibas & Gibas, 2017). The brain is not immune from these cycles of starvation. The bioenergetic model characterizes propagation of late-onset, sporadic Alzheimer's disease as loss of molecular fidelity and compromised energy originating in brain networks with highest metabolic demand...
September 9, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28899014/slow-wave-sleep-disruption-increases-cerebrospinal-fluid-amyloid-%C3%AE-levels
#8
Yo-El S Ju, Sharon J Ooms, Courtney Sutphen, Shannon L Macauley, Margaret A Zangrilli, Gina Jerome, Anne M Fagan, Emmanuel Mignot, John M Zempel, Jurgen A H R Claassen, David M Holtzman
See Mander et al. (doi:10.1093/awx174) for a scientific commentary on this article.Sleep deprivation increases amyloid-β, suggesting that chronically disrupted sleep may promote amyloid plaques and other downstream Alzheimer's disease pathologies including tauopathy or inflammation. To date, studies have not examined which aspect of sleep modulates amyloid-β or other Alzheimer's disease biomarkers. Seventeen healthy adults (age 35-65 years) without sleep disorders underwent 5-14 days of actigraphy, followed by slow wave activity disruption during polysomnogram, and cerebrospinal fluid collection the following morning for measurement of amyloid-β, tau, total protein, YKL-40, and hypocretin...
August 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28891012/visualization-of-multiple-organ-amyloid-involvement-in-systemic-amyloidosis-using-11-c-pib-pet-imaging
#9
Naoki Ezawa, Nagaaki Katoh, Kazuhiro Oguchi, Tsuneaki Yoshinaga, Masahide Yazaki, Yoshiki Sekijima
PURPOSE: To investigate the utility of Pittsburgh compound B (PiB) positron emission tomography (PET) imaging for evaluating whole-body amyloid involvement in patients with systemic amyloidosis. METHODS: Whole-body (11)C-PiB PET was performed in seven patients with systemic immunoglobulin light-chain (AL) amyloidosis, seven patients with hereditary transthyretin (ATTRm) amyloidosis, one asymptomatic TTR mutation carrier and three healthy controls. The correlations between clinical organ involvement, radiological (11)C-PiB uptake and histopathological findings were analysed for each organ...
September 10, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28887973/controlled-release-of-a-hydrophilic-drug-from-electrospun-amyloid-like-protein-blend-nanofibers
#10
Gözde Kabay, Ahmet Ersin Meydan, Gizem Kaleli Can, Ceylan Demirci, Mehmet Mutlu
In this study, a controlled drug release platform, amyloid-like bovine serum albumin (AL-BSA) with ampicillin sodium salt (amp), was developed. To develop this platform, 5%, 10%, and 20% (w/w) ratios of amp:BSA were used with electrospinning to prepare nanofibers with average diameters of 132±69, 159±60, and 179±42nm, respectively. Fourier transform infrared spectroscopy demonstrated that AL-BSA could entrap large amounts of drug inside the nanofibers, which was attributed to the antimicrobial activity of the released drug against Escherichia coli and Staphylococcus aureus...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28887775/imaging-cardiac-innervation-in-amyloidosis
#11
Riemer H J A Slart, Andor W J M Glaudemans, Bouke P C Hazenberg, Walter Noordzij
Cardiac amyloidosis is a form of restrictive cardiomyopathy resulting in heart failure and potential risk on arrhythmia, due to amyloid infiltration of the nerve conduction system and the myocardial tissue. The prognosis in this progressive disease is poor, probably due the development of cardiac arrhythmias. Early detection of cardiac sympathetic innervation disturbances has become of major clinical interest, because its occurrence and severity limits the choice of treatment. The use of iodine-123 labelled metaiodobenzylguanidine ([I-123]MIBG), a chemical modified analogue of norepinephrine, is well established in patients with heart failure and plays an important role in evaluation of sympathetic innervation in cardiac amyloidosis...
September 8, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28885307/the-treatment-of-paraprotein-related-kidney-disease
#12
Colin A Hutchison, Fei Xiong, Peter Mollee
PURPOSE OF REVIEW: Myeloma kidney and amyloid light-chain (AL) amyloidosis remain the principal kidney complications of paraproteins. In this review, we update readers to many of the recent advances which have occurred in the care and outcomes for patients with these presentations. RECENT FINDINGS: Myeloma kidney has historically caused a severe acute kidney injury with very poor outcomes. The combination of new diagnostic techniques, enabling a rapid diagnosis and novel chemotherapy agents has transformed these poor outcomes for the better...
September 6, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28871194/effect-of-amino-acid-mutations-on-the-conformational-dynamics-of-amyloidogenic-immunoglobulin-light-chains-a-combined-nmr-and-in-silico-study
#13
Sujoy Mukherjee, Simon P Pondaven, Kieran Hand, Jillian Madine, Christopher P Jaroniec
The conformational dynamics of a pathogenic κ4 human immunoglobulin light-chain variable domain, SMA, associated with AL amyloidosis, were investigated by (15)N relaxation dispersion NMR spectroscopy. Compared to a homologous light-chain, LEN, which differs from SMA at eight positions but is non-amyloidogenic in vivo, we find that multiple residues in SMA clustered around the N-terminus and CDR loops experience considerable conformational exchange broadening caused by millisecond timescale protein motions, consistent with a destabilized dimer interface...
September 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28867383/protective-effects-of-kinetin-against-aluminum-chloride-and-d-galactose-induced-cognitive-impairment-and-oxidative-damage-in-mouse
#14
Yunpeng Wei, Dan Liu, Yin Zheng, Honglian Li, Chaoshuang Hao, Wuqing Ouyang
Increasing evidence indicates that aluminum exposure and oxidative stress play crucial roles in the initiation and development of Alzheimer's disease (AD). Aluminum chloride (AlCl3) and d-galactose (d-gal) combined treatment of mice is considered as an easy and cheap way to obtain an animal model of AD. Kinetin is a plant cytokinin, which is also reported to exert neuro-protective effects in vivo and in vitro. Thus, in this study, neuro-protective effects of kinetin were investigated in an AD model of mice induced by AlCl3 and d-gal...
September 1, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28860919/a-case-of-localized-amyloidosis-of-the-eyelid-misdiagnosed-as-recurrent-chalazion
#15
Hind Manaa Alkatan, Asma Al-Mohizea, Adel Alsuhaibani
Localized amyloidosis of the eyelid is uncommon and is classically associated with systemic manifestations. We present an interesting case of a localized eyelid mass misdiagnosed as a recurrent chalazion presenting in an 85-year-old Saudi gentleman with no definite associate findings suggestive of an underlying systemic amyloid disease. Debulking surgery was subsequently performed. Proper diagnosis was reached based on the histopathologic examination of the excised tissue, which demonstrated the typical Congo red staining of the amyloid deposits...
July 2017: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28857614/attitudes-about-when-and-how-to-treat-patients-with-al-amyloidosis-an-international-survey
#16
Paolo Milani, Morie A Gertz, Giampaolo Merlini, Angela Dispenzieri
The aim of this survey was to describe the treatment decision making of expert physicians in when and how to treat patients with AL amyloidosis. Fifty amyloid expert physicians completed the survey. Autologous stem cell transplant (ASCT) was considered the first line therapy, if medically feasible, by 73% of the physicians. Excluding ASCT, cyclophosphamide-bortezomib-dexamethasone regimen was the preferred strategy by 72%. Depending on organ involvement, the goal for treatment was CR for 27-35% and very good partial response (VGPR) for 65-72%...
August 31, 2017: Amyloid: the International Journal of Experimental and Clinical Investigation
https://www.readbyqxmd.com/read/28844519/functional-cardiac-recovery-and-hematologic-response-to-chemotherapy-in-patients-with-light-chain-amyloidosis-from-the-stanford-university-amyloidosis-registry
#17
Mirela Tuzovic, Yukari Kobayashi, Matthew Wheeler, Christopher Barrett, Michaela Liedtke, Richard Lafayette, Stanley Schrier, Francois Haddad, Ronald Witteles
Cardiac involvement is common in patients with light-chain (AL) amyloidosis and portends a poor prognosis, although little is known about the changes in cardiac mechanics after chemotherapy. We sought to explore the relation between amyloidosis staging and baseline cardiac mechanics and to investigate short-term changes in cardiac mechanics after chemotherapy. We identified 41 consecutive patients from the Stanford Amyloid Center who had echocardiograms and free light-chain values before and after chemotherapy, along with 40 age- and gender-matched controls...
July 25, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28830801/presence-of-fluorescent-in-situ-hybridization-abnormalities-is-associated-with-plasma-cell-burden-in-light-chain-amyloidosis
#18
Lindsay Hammons, Ruta Brazauskas, Marcelo Pasquini, Mehdi Hamadani, Parameswaran Hari, Anita D'Souza
OBJECTIVE/BACKGROUND: To assess abnormalities found on CD138-enriched fluorescent in situ hybridization (FISH) studies on pretreated bone marrow in systemic amyloid light-chain (AL) amyloidosis and correlate findings between these abnormalities with organ involvement and 1-year survival. METHODS: We reviewed 107 patients with systemic AL to identify the impact of a diagnostic FISH study done on plasma cell clones in our institution between January 2010 and January 2015; 77 had pretreatment testing performed...
August 16, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28828707/pathology-and-diagnosis-of-renal-non-al-amyloidosis
#19
REVIEW
Sanjeev Sethi, Jason D Theis
Renal amyloidosis is characterized by acellular Congo red positive deposits in the glomeruli, interstitium and/or arteries. Light chain restriction on immunofluorescence studies is present in AL-amyloidosis, the most common type of amyloidosis involving the kidney. The detection of Congo red positive deposits coupled with negative immunofluorescence studies is highly suggestive of non-AL amyloidosis. Some of the non-AL amyloidosis are common while others are relatively rare. The clinical features, laboratory and renal pathology findings are helpful in the diagnosis and typing of non-AL amyloidosis...
August 21, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28796568/contribution-of-human-smooth-muscle-cells-to-amyloid-angiopathy-in-al-light-chain-amyloidosis
#20
Moiz Vora, Christopher G Kevil, Guillermo A Herrera
OBJECTIVE: Amyloid light-chain (AL) amyloidosis is a disease process that often compromises the peripheral vascular system and leads to systemic end-organ dysfunction. Although amyloid formation in vessel walls is a multifaceted process, the assembly of the native light chains (LCs) into amyloid fibrils is central to its pathogenesis. Recent evidence suggests that endocytosis and endolysosomal processing of immunoglobin LCs by host cells is essential to the formation of amyloid fibrils that are deposited in at least some tissues...
August 10, 2017: Ultrastructural Pathology
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