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alpha 2 macroglobulin

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https://www.readbyqxmd.com/read/29342131/survey-of-plasma-proteins-in-children-with-progeria-pre-therapy-and-on-therapy-with-lonafarnib
#1
Leslie B Gordon, Susan E Campbell, Joseph M Massaro, Ralph B D'Agostino, Monica E Kleinman, Mark W Kieran, Marsha A Moses
BACKGROUND: Hutchinson-Gilford progeria syndrome (HGPS) is an ultra-rare, fatal, segmental premature aging syndrome caused by the aberrant lamin A protein, progerin. The protein farnesyltransferase inhibitor, lonafarnib, ameliorates some aspects of cardiovascular and bone disease. STUDY DESIGN: We performed a prospective longitudinal survey of plasma proteins in 24 children with HGPS (an estimated 10% of the world's population at the time) at baseline and on lonafarnib therapy, compared to age and gender-matched controls using a multi-analyte, microsphere-based immune-fluorescent assay...
January 17, 2018: Pediatric Research
https://www.readbyqxmd.com/read/29323132/assembly-of-an-atypical-%C3%AE-macroglobulin-complex-from-pseudomonas-aeruginosa
#2
Samira Zouhir, Mylène Robert-Genthon, Daniel Maragno Trindade, Viviana Job, Marko Nedeljković, Cécile Breyton, Christine Ebel, Ina Attrée, Andréa Dessen
Alpha-2-macroglobulins (A2Ms) are large spectrum protease inhibitors that are major components of the eukaryotic immune system. Pathogenic and colonizing bacteria, such as the opportunistic pathogen Pseudomonas aeruginosa, also carry structural homologs of eukaryotic A2Ms. Two types of bacterial A2Ms have been identified: Type I, much like the eukaryotic form, displays a conserved thioester that is essential for protease targeting, and Type II, which lacks the thioester and to date has been poorly studied despite its ubiquitous presence in Gram-negatives...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29302075/foxo1-a2m-and-tgf-%C3%AE-1-three-novel-genes-predicting-depression-in-gene-x-environment-interactions-are-identified-using-cross-species-and-cross-tissues-transcriptomic-and-mirnomic-analyses
#3
Annamaria Cattaneo, Nadia Cattane, Chiara Malpighi, Darina Czamara, Anna Suarez, Nicole Mariani, Eero Kajantie, Alessia Luoni, Johan G Eriksson, Jari Lahti, Valeria Mondelli, Paola Dazzan, Katri Räikkönen, Elisabeth B Binder, Marco A Riva, Carmine M Pariante
To date, gene-environment (GxE) interaction studies in depression have been limited to hypothesis-based candidate genes, since genome-wide (GWAS)-based GxE interaction studies would require enormous datasets with genetics, environmental, and clinical variables. We used a novel, cross-species and cross-tissues "omics" approach to identify genes predicting depression in response to stress in GxE interactions. We integrated the transcriptome and miRNome profiles from the hippocampus of adult rats exposed to prenatal stress (PNS) with transcriptome data obtained from blood mRNA of adult humans exposed to early life trauma, using a stringent statistical analyses pathway...
January 4, 2018: Molecular Psychiatry
https://www.readbyqxmd.com/read/29296203/the-pathogenesis-of-diclofenac-induced-immunoallergic-hepatitis-in-a-canine-model-of-liver-injury
#4
Saravanakumar Selvaraj, Jung-Hwa Oh, Reinhard Spanel, Florian Länger, Hyoung-Yun Han, Eun-Hee Lee, Seokjoo Yoon, Jürgen Borlak
Hypersensitivity to non-steroidal anti-inflammatory drugs is a common adverse drug reaction and may result in serious inflammatory reactions of the liver. To investigate mechanism of immunoallergic hepatitis beagle dogs were given 1 or 3 mg/kg/day (HD) oral diclofenac for 28 days. HD diclofenac treatment caused liver function test abnormalities, reduced haematocrit and haemoglobin but induced reticulocyte, WBC, platelet, neutrophil and eosinophil counts. Histopathology evidenced hepatic steatosis and glycogen depletion, apoptosis, acute lobular hepatitis, granulomas and mastocytosis...
December 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/29287080/serum-apolipoprotein-a1-and-haptoglobin-in-patients-with-suspected-drug-induced-liver-injury-dili-as-biomarkers-of-recovery
#5
Valentina Peta, Chantal Tse, Hugo Perazzo, Mona Munteanu, Yen Ngo, An Ngo, Nittia Ramanujam, Lea Verglas, Maxime Mallet, Vlad Ratziu, Dominique Thabut, Marika Rudler, Vincent Thibault, Ina Schuppe-Koistinen, Dominique Bonnefont-Rousselot, Bernard Hainque, Françoise Imbert-Bismut, Michael Merz, Gerd Kullak-Ublick, Raul Andrade, Florian van Boemmel, Eckart Schott, Thierry Poynard
BACKGROUND: There is a clear need for better biomarkers of drug-induced-liver-injury (DILI). AIMS: We aimed to evaluate the possible prognostic value of ActiTest and FibroTest proteins apoliprotein-A1, haptoglobin and alpha-2-macroglobulin, in patients with DILI. METHODS: We analyzed cases and controls included in the IMI-SAFE-T-DILI European project, from which serum samples had been stored in a dedicated biobank. The analyses of ActiTest and FibroTest had been prospectively scheduled...
2017: PloS One
https://www.readbyqxmd.com/read/29284148/itraq-based-comparative-proteome-analysis-for-molecular-mechanism-of-defense-against-acute-ammonia-toxicity-in-pacific-white-shrimp-litopenaeus-vannamei
#6
Xia Lu, Sheng Luan, Ping Dai, Xianhong Meng, Baoxiang Cao, Kun Luo, Jie Kong
In the practical farming of Litopenaeus vannamei, the intensive culture system and environmental pollution usually results in a high concentration of ammonia, which brings large detrimental effects to shrimp, such as increasing the susceptibility to pathogens and even causing high mortality. We have revealed that the survival time under acute ammonia stress varied substantially among different families and obtained ammonia-tolerant (LV_T) and ammonia-sensitive (LV_S) families. In order to understand the molecular mechanism of defense against ammonia toxicity in shrimp, we performed iTRAQ LC-MS/MS proteomic analysis between LV_T and LV_S groups of L...
December 25, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29216721/alpha-2-macroglobulin-and-hyaluronic-acid-as-fibromarkers-in-patients-with-chronic-hepatitis-c
#7
B Pitekova, V Kupcova, E Uhlikova, V Mojto, L Turecky
BACKGROUND: Liver fibrosis is the final common pathway of chronic liver diseases of various etiology. From the practical standpoint, it would be ideal to have a noninvasive fibromarker. The aim of our study was to investigate the levels of alpha-2-macroglobulin, potential fibromarker, in correlation to histological staging and another potential fibromarker, hyaluronic acid, in patients with chronic hepatitis C. METHODS: Population groups in this study consisted of 51 healthy volunteers and 54 patients with chronic hepatitis C...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/29207246/multiple-reaction-monitoring-for-the-quantitation-of-serum-protein-glycosylation-profiles-application-to-ovarian-cancer
#8
Suzanne Miyamoto, Carol D Stroble, Sandra Taylor, Qiuting Hong, Carlito B Lebrilla, Gary S Leiserowitz, Kyoungmi Kim, L Renee Ruhaak
Protein glycosylation fingerprints are widely recognized as potential markers for disease states and indeed differential glycosylation has been identified in multiple types of autoimmune diseases and several types of cancer. However, releasing the glycans leave the glycoproteins unknown, therefore there exists a need for high-throughput methods that allow quantification of site- and protein- specific glycosylation patterns from complex biological mixtures. In this study, a targeted multiple reaction monitoring (MRM)-based method for the protein- and site- specific quantitation involving serum proteins immunoglobulins A, G and M, alpha-1-antitrypsin, transferrin, alpha-2-macroglobulin, haptoglobin, alpha-1-acid glycoprotein and complement C3 was developed...
December 5, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/29154276/sparcl1-accelerates-symptom-onset-in-alzheimer-s-disease-and-influences-brain-structure-and-function-during-aging
#9
Sahba Seddighi, Vijay R Varma, Yang An, Sudhir Varma, Lori L Beason-Held, Toshiko Tanaka, Melissa H Kitner-Triolo, Michael A Kraut, Christos Davatzikos, Madhav Thambisetty
We recently reported that alpha-2 macroglobulin (A2M) is a biomarker of neuronal injury in Alzheimer's disease (AD) and identified a network of nine genes co-expressed with A2M in the brain. This network includes the gene encoding SPARCL1, a protein implicated in synaptic maintenance. Here, we examine whether SPARCL1 is associated with longitudinal changes in brain structure and function in older individuals at risk for AD in the Baltimore Longitudinal Study of Aging. Using data from the Gene-Tissue Expression Project, we first identified two single nucleotide polymorphisms (SNPs), rs9998212 and rs7695558, associated with lower brain SPARCL1 gene expression...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29149247/quantitative-proteomic-profiling-of-bovine-follicular-fluid-during-follicle-development
#10
Rodrigo de Andrade Ferrazza, Elizabeth Moreira Dos Santos Schmidt, Monika Mihm Carmichael, Fabiana Ferreira de Souza, Richard Burchmore, Roberto Sartori, Peter David Eckersall, João Carlos Pinheiro Ferreira
Bovine follicular fluid (FF) constitutes the microenvironment of follicles and includes various biologically active proteins. We performed a study involving 18 healthy non-lactating Holstein cows to determine the protein expression profile of FF at key-stages of follicular development. Follicles were individually aspirated in vivo at pre-deviation (F1∼7.0mm); deviation (F1∼8.5mm); post-deviation (F1∼12.0mm); and pre-ovulatory stages of follicle development, which were confirmed by measurement of follicular estradiol and progesterone concentrations...
November 15, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29147019/identification-and-characterization-of-serine-protease-inhibitors-in-a-parasitic-wasp-pteromalus-puparum
#11
Lei Yang, Yaotian Mei, Qi Fang, Jiale Wang, Zhichao Yan, Qisheng Song, Zhe Lin, Gongyin Ye
Serine protease inhibitors (SPIs) regulate protease-mediated activities by inactivating their cognate proteinases, and are involved in multiple physiological processes. SPIs have been extensively studied in vertebrates and invertebrates; however, little SPI information is available in parasitoids. Herein, we identified 57 SPI genes in total through the genome of a parasitoid wasp, Pteromalus puparum. Gene structure analyses revealed that these SPIs contain 7 SPI domains. Depending on their mode of action, these SPIs can be categorized into serpins, canonical inhibitors and alpha-2-macroglobulins (A2Ms)...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29114703/validation-of-hepa-index-as-a-non-invasive-biomarkers-panel-for-assessment-of-hepatic-fibrosis-in-egyptians-with-chronic-hepatitis-c
#12
Mohamed Alboraie, Kerstin Schütte, Marwa Khairy, Marwa Elsharkawy, Noha Asem, Fathy Elghamry, Helmy Shalaby, Gamal Esmat, Peter Malfertheiner
To validate the diagnostic performance of Hepa-Index in predicting different stages of hepatic fibrosis in Egyptian patients with chronic hepatitis C (CHC). Methods: Hundred treatment naïve chronic hepatitis C Egyptian patients were prospectively enrolled between June 2014 and January 2015. They were subjected to: platelet count, alpha-2-macroglobulin (α2-MG), total bilirubin, gamma glutamyl transpeptidase (GGT), total cholesterol, liver biopsy and histopathological staging of hepatic fibrosis according to METAVIR scoring system...
November 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/29108477/hyperthermia-and-mild-traumatic-brain-injury-effects-on-inflammation-and-the-cerebral-vasculature
#13
Jessie Truettner, Helen M Bramlett, W Dalton Dietrich
Mild traumatic brain injury (mTBI) or concussion represents the majority of TBIs brain trauma in the United States. The pathophysiology of mTBI is complex and may include both focal and diffuse injury patterns. In addition to altered circuit dysfunction and diffuse traumatic axonal injury (DTAI), chronic neuroinflammation has also been implicated in the pathophysiology of mTBI. Recently, our laboratory has reported the detrimental effects of mild hyperthermic mTBI in terms of worsening histopathological and behavioral outcomes...
November 6, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29093276/alpha-2-macroglobulin-as-a-promising-biological-marker-of-endothelial-function
#14
Ryo Shimomura, Tomohisa Nezu, Naohisa Hosomi, Shiro Aoki, Takamichi Sugimoto, Naoto Kinoshita, Mutsuko Araki, Tetsuya Takahashi, Hirofumi Maruyama, Masayasu Matsumoto
AIMS: Alpha-2-macroglobulin (α2MG) is thought to be associated with inflammatory reactions and procoagulant properties that might cause ischemic stroke. Endothelial dysfunction plays an important role in atherosclerosis development and in the occurrence of cardiovascular events. In this study, we investigated whether serum α2MG levels, endothelial function, and endothelial progenitor cell (EPC) number were associated in patients with chronic stroke or cardiovascular risk factors. METHODS: Patients with a history of stroke or any established cardiovascular risk factors were enrolled in this study (n=102; 69 men, 70...
November 1, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/29091011/clinical-proteomics-and-cytokine-profiling-for-dengue-fever-disease-severity-biomarkers
#15
Manali Jadhav, Monalisha Nayak, Swati Kumar, Apoorva Venkatesh, Sandip K Patel, Vipin Kumar, Sarthak Sharma, Biaus Samanta, Satarupa Deb, Avik Karak, Sumit Verma, Arunansu Talukdar, Sanjay K Kochar, Preeti Mansukhani, Mayuri Gandhi, Sanjeeva Srivastava
Dengue fever (DF) is a major global health burden with a pathophysiology that is still incompletely understood. Biomarkers that predict and explain susceptibility to DF and its progression to its more severe hemorrhagic form are much needed. DF is endemic in tropical and subtropical regions of the world, with a rapidly increasing incidence of disease severity. We conducted a clinical biomarker discovery study using both a case-control and longitudinal study design. Plasma proteome alterations in patients with DF (n = 12) and dengue hemorrhagic fever (DHF, n = 24) were analyzed in comparison to healthy controls (HCs, n = 16), using the isobaric tags for relative and absolute quantification (iTRAQ)-based quantitative proteomics methodology (false discovery rate of 1%, ≥2 peptides)...
November 2017: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/29037141/analysis-of-four-circulating-complexes-of-insulin-like-growth-factor-binding-proteins-in-human-blood-during-aging
#16
O Nedić, M Šunderić, N Gligorijević, V Malenković, G Miljuš
The primary role of insulin-like growth factor binding proteins (IGFBPs) is to regulate availability of IGFs for interacting with receptors, but IGFBPs perform IGF-independent actions as well. The availability and activity of IGFBPs in the circulation is influenced primarily by their concentration and structural modifications, but possibly also by interaction with major plasma proteins such as transferrin, alpha-2-macroglobulin (α2M), and fibrinogen. Four types of circulating IGFBP complexes were examined in this study by immuno- and ligand-binding assays in adults of different age...
October 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28969563/chemotherapeutic-drugs-and-plasma-proteins-exploring-new-dimensions
#17
Mohammad Khalid Zia, Tooba Siddiqui, Syed Saqib Ali, Ahmed Abdur Rehman, Haseeb Ahsan, Fahim Halim Khan
In the last few decades, advances in the cancer chemotherapy have been a marked success. A large number of anticancer drugs currently in use include drugs based on platinum complexes such as cisplatin, base analogues such as 5-florouracil and some ruthenium drugs. This review provides a bird's eye view of interaction of a number of clinically important drugs currently in use that show covalent or non-covalent interaction with serum proteins. . Platinum drug-cisplatin interacts covalently and alters the function of the key plasma protease inhibitor molecule -alpha-2-macroglobulin and induces the conformational changes in the protein molecule and inactivates it...
October 2, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/28930915/microvesicle-subsets-in-sepsis-due-to-community-acquired-pneumonia-compared-to-faecal-peritonitis
#18
Hazem M S Lashin, Suchita Nadkarni, Silvia Oggero, Hefin R Jones, Julian C Knight, Charles J Hinds, Mauro Perretti
RATIONALE: Microvesicles (MV) act as a non-soluble means of inter-cellular communication, with effector roles in disease pathogenesis and potentially as biomarkers. Previously, we reported that neutrophil MV expressing alpha-2-macroglobulin (A2MG) are protective in experimental sepsis and associate with survival in a small cohort of patients with sepsis due to community acquired pneumonia (CAP). OBJECTIVES: To characterise MV profiles in sepsis due to CAP or faecal peritonitis (FP) and determine their relation to outcome...
September 19, 2017: Shock
https://www.readbyqxmd.com/read/28912679/proteomic-differences-in-blood-plasma-associated-with-antidepressant-treatment-response
#19
Christoph W Turck, Paul C Guest, Giuseppina Maccarrone, Marcus Ising, Stefan Kloiber, Susanne Lucae, Florian Holsboer, Daniel Martins-de-Souza
The current inability of clinical psychiatry to objectively select the most appropriate treatment is a major factor contributing to the severity and clinical burden of major depressive disorder (MDD). Here, we have attempted to identify plasma protein signatures in 39 MDD patients to predict response over a 6-week treatment period with antidepressants. LC-MS/MS analysis showed that differences in the levels of 29 proteins at baseline were found in the group with a favorable treatment outcome. Most of these proteins were components of metabolism or immune response pathways as well as multiple components of the coagulation cascade...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28888879/fast-form-alpha-2-macroglobulin-a-marker-for-protease-activation-in-plasma-exposed-to-artificial-surfaces
#20
Daniel Biltoft, Jørgen B Gram, Anette Larsen, Anna-Marie B Münster, Johannes J Sidelmann, Karsten Skjoedt, Yaseelan Palarasah
OBJECTIVES: Investigation of the blood compatibility requires a number of sensitive assays to quantify the activation of the blood protein cascades and cells induced by biomaterials. A global assay measuring the blood compatibility of biomaterials could be a valuable tool in such regard. In this study, we investigated whether an enzyme-linked immunosorbent assay (ELISA), that specifically measures the electrophoretic "fast form" of α2-macroglobulin (F-α2M), could be a sensitive and global marker for activation of calcium dependent and in-dependent proteases in plasma exposed to biomaterials in vitro...
September 6, 2017: Clinical Biochemistry
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