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Plasma biomarkers

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https://www.readbyqxmd.com/read/28229982/circulating-free-dna-mutation-associated-with-response-of-targeted-therapy-in-human-epidermal-growth-factor-receptor-2-positive-metastatic-breast-cancer
#1
Qing Ye, Fan Qi, Li Bian, Shao-Hua Zhang, Tao Wang, Ze-Fei Jiang
BACKGROUND: The addition of anti-human epidermal growth factor receptor 2 (HER2)-targeted drugs, such as trastuzumab, lapatinib, and trastuzumab emtansine (T-DM1), to chemotherapy significantly improved prognosis of HER2-positive breast cancer patients. However, it was confused that metastatic patients vary in the response of targeted drug. Therefore, methods of accurately predicting drug response were really needed. To overcome the spatial and temporal limitations of biopsies, we aimed to develop a more sensitive and less invasive method of detecting mutations associated with anti-HER2 therapeutic response through circulating-free DNA (cfDNA)...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28229303/phospholipase-d1-expression-analysis-in-relapsing-remitting-multiple-sclerosis-patients
#2
Mohammad Mahdi Eftekharian, Tahereh Azimi, Soudeh Ghafouri-Fard, Arezou Sayad, Mir Davood Omrani, Shaghayegh Sarrafzadeh, Roghayeh Abbasalipourkabir, Mehrdokht Mazdeh, Mohammad Taheri
Multiple sclerosis (MS) is a chronic disorder resulting from destruction of the myelin or insulating covers of neurons in the central nervous system (CNS). Several lines of evidence suggest a role for immune response in the occurrence and progression of this disorder. Several disease-modifying agents (DMA) including β-interferons (IFNβ) are being used in MS patients in order to stop the disease at the early inflammatory stage, postpone disease progression and diminish future disability. Phospholipase D1 (PLD1) is a critical enzyme responsible for the making lipid second messenger phosphatidic acid...
February 22, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28229128/repetitive-head-impact-exposure-and-later-life-plasma-total-tau-in-former-national-football-league-players
#3
Michael L Alosco, Yorghos Tripodis, Johnny Jarnagin, Christine M Baugh, Brett Martin, Christine E Chaisson, Nate Estochen, Linan Song, Robert C Cantu, Andreas Jeromin, Robert A Stern
INTRODUCTION: Blood protein analysis of total tau (t-tau) may be a practical screening biomarker for chronic traumatic encephalopathy (CTE), a neurodegenerative tauopathy associated with repetitive head impact (RHI) exposure. We examined plasma t-tau in symptomatic former National Football League (NFL) players compared with controls and the relationship between RHI exposure and later-life plasma t-tau. METHODS: Ninety-six former NFL players (age 40-69) and 25 same-age controls underwent blood draw to determine plasma t-tau levels...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28228865/identification-of-beta-cell-dysfunction-at-the-pre-symptomatic-stage-of-diabetes-mellitus-by-novel-analytical-system-liquid-biopsy-measurements-in-femtograms
#4
REVIEW
Kurt Krapfenbauer
BACKGROUND: Diabetes mellitus is produced and progresses as a consequence of complex and gradual processes, in which a variety of alterations of the endocrine pancreas, are involved and which mainly result in beta cell failure. Those molecular alterations can be found in the bloodstream, which suggests that we could quantify specific biomarkers in plasma or serum by very sensitive methods before the onset diabetes mellitus is diagnosed. However, classical methods of protein analysis such as electrophoresis, Western blot, ELISA, and liquid chromatography are generally time-consuming, lab-intensive, and not sensitive enough to detect such alteration in a pre-symptomatic state of the disease...
December 2017: EPMA Journal
https://www.readbyqxmd.com/read/28228104/driver-mutations-jak2v617f-mplw515l-k-or-calr-pentraxin-3-and-c-reactive-protein-in-essential-thrombocythemia-and-polycythemia-vera
#5
Federico Lussana, Alessandra Carobbio, Silvia Salmoiraghi, Paola Guglielmelli, Alessandro Maria Vannucchi, Barbara Bottazzi, Roberto Leone, Alberto Mantovani, Tiziano Barbui, Alessandro Rambaldi
BACKGROUND: The driver mutations JAK2V617F, MPLW515L/K and CALR influence disease phenotype of myeloproliferative neoplasms (MPNs) and might sustain a condition of chronic inflammation. Pentraxin 3 (PTX3) and high-sensitivity C-reactive protein (hs-CRP) are inflammatory biomarkers potentially useful for refining prognostic classification of MPNs. METHODS: We evaluated 305 with essential thrombocythemia (ET) and 172 polycythemia vera (PV) patients diagnosed according to the 2016 WHO criteria and with full molecular characterization for driver mutations...
February 22, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28228098/anti-obesity-effect-of-ethanolic-extract-from-cosmos-caudatus-kunth-leaf-in-lean-rats-fed-a-high-fat-diet
#6
Hafeedza Abdul Rahman, Najla Gooda Sahib, Nazamid Saari, Faridah Abas, Amin Ismail, Muhammad Waseem Mumtaz, Azizah Abdul Hamid
BACKGROUND: Obesity is a major health concern both in developed and developing countries. The use of herbal medicines became the subject of interest for the management of obesity due to its natural origin, cost effectiveness and minimal side effects. The present study aimed at investigating anti-obesity potential of ethanolic extract from Cosmos caudatus Kunth leaf (EECCL). METHODS: In this study, the rats were randomly divided into six groups i.e., (1) Normal Diet (ND); (2) Normal Diet and 175 mg/kgBW of EECCL (ND + 175 mg/kgBW); (3) Normal Diet and 350 mg/kgBW of EECCL (ND + 350 mg/kgBW); (4) High Fat Diet (HFD); (5) High Fat Diet and 175 mg/kgBW of EECCL (HFD + 175 mg/kgBW); (6) High Fat Diet and 350 mg/kgBW of EECCL (HFD + 350 mg/kgBW)...
February 22, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28225807/increased-liver-specific-proteins-in-circulating-extracellular-vesicles-as-potential-biomarkers-for-drug-and-alcohol-induced-liver-injury
#7
Young-Eun Cho, Eun-Ju Im, Pyong-Gon Moon, Esteban Mezey, Byoung-Joon Song, Moon-Chang Baek
Drug- and alcohol-induced liver injury are a leading cause of liver failure and transplantation. Emerging evidence suggests that extracellular vesicles (EVs) are a source of biomarkers because they contain unique proteins reflecting the identity and tissue-specific origin of the EV proteins. This study aimed to determine whether potentially hepatotoxic agents, such as acetaminophen (APAP) and binge alcohol, can increase the amounts of circulating EVs and evaluate liver-specific EV proteins as potential biomarkers for liver injury...
2017: PloS One
https://www.readbyqxmd.com/read/28225519/a-cytokine-pattern-that-differentiates-preseroconversion-from-postseroconversion-phases-of-primary-hiv-infection
#8
Lucia Pastor, Erica Parker, Jorge Carrillo, Victor Urrea, Laura Fuente-Soro, Durval Respeito, Chenjerai Jairoce, Inacio Mandomando, Julià Blanco, Denise Naniche
BACKGROUND: During acute HIV infection, HIV actively replicates but seroconversion has not yet occurred. Primary HIV infection (PHI) is characterized by a transient nonspecific febrile illness, a massive inflammatory response, and the progressive appearance of anti-HIV-specific antibodies. In this study, we have identified patterns of inflammatory biomarkers associated with the innate immunological reaction before completion of a full humoral response. METHODS: A symptom-based screening was used to identify acute HIV infection in the Manhiça District Hospital in Mozambique...
April 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28225367/progranulin-gene-variation-affects-serum-progranulin-levels-differently-in-danish-bipolar-individuals-compared-with-healthy-controls
#9
Henriette N Buttenschøn, Marit N Nielsen, Gangadaar Thotakura, Chris W Lee, Anders Nykjær, Ole Mors, Simon Glerup
OBJECTIVES: The identification of peripheral biomarkers for bipolar disorder is of great importance and has the potential to improve diagnosis, treatment and prognosis. Recent studies have reported lower plasma progranulin levels in bipolar individuals compared with controls and association with single nucleotide polymorphisms (SNPs) within the progranulin gene (GRN). In the present study, we investigated the effect of GRN and sortilin (SORT1) gene variation on serum progranulin levels in bipolar individuals and controls...
February 20, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28225046/erratum-validation-of-plasma-micrornas-as-biomarkers-for-myotonic-dystrophy-type-1
#10
A Perfetti, S Greco, R Cardani, B Fossati, G Cuomo, R Valaperta, F Ambrogi, A Cortese, A Botta, A Mignarri, M Santoro, C Gaetano, E Costa, M T Dotti, G Silvestri, R Massa, G Meola, F Martelli
No abstract text is available yet for this article.
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28224282/micrornas-effective-elements-in-ear-related-diseases-and-hearing-loss
#11
REVIEW
Mohammad-Reza Mahmoudian-Sani, Ameneh Mehri-Ghahfarrokhi, Fereshteh Ahmadinejad, Morteza Hashemzadeh-Chaleshtori, Massoud Saidijam, Mohammad-Saeid Jami
miRNAs are important factors for post-transcriptional process that controls gene expression at mRNA level. Various biological processes, including growth and differentiation, are regulated by miRNAs. miRNAs have been demonstrated to play an essential role in development and progression of hearing loss. Nowadays, miRNAs are known as critical factors involved in different physiological, biological, and pathological processes, such as gene expression, progressive sensorineural hearing loss, age-related hearing loss, noise-induced hearing loss, cholesteatoma, schwannomas, and inner ear inflammation...
February 21, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28223934/plasma-cystatin-c-and-high-density-lipoprotein-are-important-biomarkers-of-alzheimer-s-disease-and-vascular-dementia-a-cross-sectional-study
#12
Rui Wang, Zhaoyu Chen, Yongmei Fu, Xiaobo Wei, Jinchi Liao, Xu Liu, Bingjun He, Yunqi Xu, Jing Zou, Xiaoyan Yang, Ruihui Weng, Sheng Tan, Christopher McElroy, Kunlin Jin, Qing Wang
: Objectives: Cystatin C (Cys C) and high-density lipoprotein (HDL) play critical roles in neurodegenerative diseases, such as dementia, Alzheimer's disease (AD) and vascular dementia (VaD). However, whether they can be used as reliable biomarkers to distinguish patients with dementia from healthy subjects and to determine disease severity remain largely unknown. Methods: We conducted a cross-sectional study to determine plasma Cys C and HDL levels of 88 patients with dementia (43 AD patients, 45 VaD patients) and 45 healthy age-matched controls...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28223686/metabolic-profiling-of-presymptomatic-huntington-s-disease-sheep-reveals-novel-biomarkers
#13
Debra J Skene, Benita Middleton, Cara K Fraser, Jeroen L A Pennings, Timothy R Kuchel, Skye R Rudiger, C Simon Bawden, A Jennifer Morton
The pronounced cachexia (unexplained wasting) seen in Huntington's disease (HD) patients suggests that metabolic dysregulation plays a role in HD pathogenesis, although evidence of metabolic abnormalities in HD patients is inconsistent. We performed metabolic profiling of plasma from presymptomatic HD transgenic and control sheep. Metabolites were quantified in sequential plasma samples taken over a 25 h period using a targeted LC/MS metabolomics approach. Significant changes with respect to genotype were observed in 89/130 identified metabolites, including sphingolipids, biogenic amines, amino acids and urea...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223055/plasma-monocyte-chemotactic-protein-1-is-associated-with-acute-kidney-injury-and-death-after-cardiac-operations
#14
Dennis G Moledina, Selin Isguven, Eric McArthur, Heather Thiessen-Philbrook, Amit X Garg, Michael Shlipak, Richard Whitlock, Peter A Kavsak, Steven G Coca, Chirag R Parikh
BACKGROUND: Monocyte chemotactic protein-1 (MCP-1; chemokine C-C ligand-2 [CCL-2]) is upregulated in ischemia-reperfusion injury and is a promising biomarker of inflammation in cardiac operations. METHODS: We measured preoperative and postoperative plasma MCP-1 levels in adults undergoing cardiac operations to evaluate the association of perioperative MCP-1 levels with acute kidney injury (AKI) and death in Translational Research Investigating Biomarker Endpoints in AKI (TRIBE-AKI), a prospective, multicenter, observational cohort...
February 18, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28222799/assessment-of-plasma-chitotriosidase-activity-ccl18-parc-concentration-and-np-c-suspicion-index-in-the-diagnosis-of-niemann-pick-disease-type-c-a-prospective-observational-study
#15
Isabel De Castro-Orós, Pilar Irún, Jorge Javier Cebolla, Victor Rodriguez-Sureda, Miguel Mallén, María Jesús Pueyo, Pilar Mozas, Carmen Dominguez, Miguel Pocoví
BACKGROUND: Niemann-Pick disease type C (NP-C) is a rare, autosomal recessive neurodegenerative disease caused by mutations in either the NPC1 or NPC2 genes. The diagnosis of NP-C remains challenging due to the non-specific, heterogeneous nature of signs/symptoms. This study assessed the utility of plasma chitotriosidase (ChT) and Chemokine (C-C motif) ligand 18 (CCL18)/pulmonary and activation-regulated chemokine (PARC) in conjunction with the NP-C suspicion index (NP-C SI) for guiding confirmatory laboratory testing in patients with suspected NP-C...
February 21, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28222651/levodopa-placebo-and-rotigotine-change-biomarker-levels-for-oxidative-stress
#16
Siegfried Muhlack, Manuel Kinkel, Lennard Herrman, Thomas Müller
INTRODUCTION: Homocysteine increase and glutathione derivative cysteinyl-glycine fall are indirect biomarkers for oxidative stress, for instance due to dopamine D1 receptor stimulation. OBJECTIVES: To investigate the influence of the D1 receptor agonists levodopa and rotigotine compared with placebo on homocysteine and cysteinyl-glycine in plasma of patients with Parkinson's disease. METHODS: Patients received 100 mg levodopa, 4 mg rotigotine or placebo...
February 22, 2017: Neurological Research
https://www.readbyqxmd.com/read/28222616/plasma-biomarkers-for-the-identification-of-women-at-risk-for-early-onset-preeclampsia
#17
Aggeliki Kolialexi, George Th Tsangaris, Stavros Sifakis, Dimitris Gourgiotis, Aggeliki Katsafadou, Alexandra Lykoudi, Antonios Marmarinos, Danai Mavreli, Vassilis Pergialiotis, Dimitra Fexi, Ariadni Mavrou, George K Papaioanou, Nikolas Papantoniou
BACKGROUND: To identify potential biomarkers in the 1st trimester of pregnancy for the identification of women destined to develop early onset preeclampsia (EOPE). METHODS: Blood samples were obtained from pregnant women at 11-13 weeks of gestation. Women were followed up until delivery. Five samples from EOPE complicated pregnancies and 5 from unaffected ones were analysed using 2-DE and MALDI-TOF-TOF MS/MS. The altered expression of selected proteins was verified by ELISA in an extended sample cohort...
March 2017: Expert Review of Proteomics
https://www.readbyqxmd.com/read/28222503/selenium-levels-in-serum-red-blood-cells-and-cerebrospinal-fluid-of-alzheimer-s-disease-patients-a-report-from-the-australian-imaging-biomarker-lifestyle-flagship-study-of-ageing-aibl
#18
Bárbara R Cardoso, Dominic J Hare, Ashley I Bush, Qiao-Xin Li, Christopher J Fowler, Colin L Masters, Ralph N Martins, Katherine Ganio, Amber Lothian, Soumya Mukherjee, Eugene A Kapp, Blaine R Roberts
Selenium (Se) protects cells against oxidative stress damage through a range of bioactive selenoproteins. Increased oxidative stress is a prominent feature of Alzheimer's disease (AD), and previous studies have shown that Se deficiency is associated with age-related cognitive decline. In this study, we assessed Se status in different biofluids from a subgroup of participants in the Australian Imaging, Biomarkers and Lifestyle Flagship Study of Ageing. As Se in humans can either be an active component of selenoproteins or inactive via non-specific incorporation into other proteins, we used both size exclusion chromatography-inductively coupled plasma-mass spectrometry (SEC-ICP-MS) and tandem mass spectrometry to characterize selenoproteins in serum...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28221766/proteoform-profile-mapping-of-the-human-serum-complement-component-c9-reveals-unexpected-new-features-of-n-o-and-c-glycosylation
#19
Vojtech Franc, Yang Yang, Albert J R Heck
The human complement C9 protein (~65 kDa) is a member of the complement pathway. It plays an essential role in the membrane attack complex (MAC), which forms a lethal pore on the cellular surface of pathogenic bacteria. Here, we charted in detail the structural micro-heterogeneity of C9 purified from human blood serum, using an integrative workflow combining high-resolution native mass spectrometry and (glyco)peptide-centric proteomics. The proteoform profile of C9 was acquired by high-resolution native mass spectrometry, which revealed the co-occurrence of ~50 distinct MS signals...
February 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28220651/elisa-type-assays-of-trace-biomarkers-using-microfluidic-methods
#20
REVIEW
Jinhua Dong, Hiroshi Ueda
Recently, great progress has been achieved for analytical technologies for biological substances. Traditionally, detection methods for analytes mainly rely on large instrumental analyses. These methods require costly equipment, skilled operators and long measurement time despite their generally low sensitivity. In contrast, immunoassays are becoming more and more popular for it is powerful, inexpensive, and convenient nature. Immunoassay has a range of applications, because it employs antibody, a protein produced by plasma cells in the acquired immune system to identify and neutralize diverse pathogens and other exogenous substances...
February 20, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
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