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https://www.readbyqxmd.com/read/29778312/biomarker-signatures-of-sickle-cell-disease-severity
#1
Mengtian Du, Sarah Van Ness, Victor Gordeuk, Sayed M Nouraie, Sergei Nekhai, Mark Gladwin, Martin H Steinberg, Paola Sebastiani
Identifying sickle cell disease patients at high risk of complications could lead to personalized treatment and better prognosis but despite many advances prediction of the clinical course of these patients remains elusive. We propose a system-type approach to discover profiles of multiple, common biomarkers that correlate with morbidity and mortality in sickle cell disease. We used cluster analysis to discover 17 signatures of 17 common circulating biomarkers in 2320 participants of the Cooperative Study of Sickle Cell Disease, and evaluated the association of these signatures with risk for stroke, pain, leg ulceration, acute chest syndrome, avascular necrosis, seizure, death, and trend of fetal hemoglobin and hemolysis using longitudinally collected data...
May 16, 2018: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/29725527/a-correction-formula-for-neuron-specific-enolase-measurement-in-hemolyzed-neonatal-serum-samples
#2
Qiang Wang, Guangrong Wang, Xiaolan Lu, Xiaolan Guo, Qin Du, Fang Lin, Quming Fan, Guoyuan Zhang, Dongsheng Wang
As a specific biomarker in neonatal hypoxic-ischemic encephalopathy (HIE), the measurement of neuron-specific enolase (NSE) has been advocated as a predictor of outcome in neurological injury. However, the measured levels of NSE may be influenced by hemolysis. In the current study, the change in the concentration of NSE in serum was measured by chemiluminescence prior to and following the addition of individual frozen and thawed red blood cells from 86 neonates that were collected within 24 h of birth. The changes in the concentration of NSE were compared with the changes in the concentration of hemoglobin (Hb), measured by the hemoglobin cyanide (HiCN) method, to establish a correction formula...
May 2018: Biomedical Reports
https://www.readbyqxmd.com/read/29691142/oxidative-stress-biomarkers-and-clinical-dimensions-in-first-10-years-of-schizophrenia
#3
Leticia González-Blanco, María Paz García-Portilla, Leticia García-Álvarez, Lorena de la Fuente-Tomás, Celso Iglesias García, Pilar A Sáiz, Susana Rodríguez-González, Ana Coto-Montes, Julio Bobes
INTRODUCTION: Several studies have described increased oxidative stress parameters in patients with schizophrenia. The objectives of the current study were to identify potential oxidative stress biomarkers in stable patients during first 10 years of schizophrenia and determine if they are associated with specific clinical dimensions. MATERIAL AND METHODS: Seventy-three clinically stable outpatients with schizophrenia and 73 sex and age-matched healthy controls were recruited...
April 21, 2018: Revista de Psiquiatrí́a y Salud Mental
https://www.readbyqxmd.com/read/29611201/a-practical-toxicity-bioassay-for-vicine-convicine-levels-in-faba-bean-vicia-faba
#4
Fitsum Getachew, Albert Vandenberg, Judit Smits
BACKGROUND: Faba bean (Vicia faba) vicine/convicine (V-C) aglycones (divicine/isouramil) provoke an acute hemolytic anemia called favism in individuals with a glucose-6-phosphate dehydrogenase (G6PD) enzyme defect in their red blood cells. Geneticists/plant breeders are working with faba bean to decrease V-C levels to improve public acceptance of this high protein pulse crop. Here, we present a fast and simple ex-vivo in vitro bioassay for V-C toxicity testing of faba bean or faba bean food products...
April 2, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29603246/elevated-free-hemoglobin-and-decreased-haptoglobin-levels-are-associated-with-adverse-clinical-outcomes-unfavorable-physiologic-measures-and-altered-inflammatory-markers-in-pediatric-cardiac-surgery-patients
#5
Jill M Cholette, Anthony P Pietropaoli, Kelly F Henrichs, George M Alfieris, Karen S Powers, Francisco Gensini, Jeffrey S Rubenstein, Dawn Sweeney, Richard Phipps, Sherry L Spinelli, Majed A Refaai, Michael P Eaton, Neil Blumberg
BACKGROUND: There are data suggesting that free hemoglobin (Hb), heme, and iron contribute to infection, thrombosis, multiorgan failure, and death in critically ill patients. These outcomes may be mitigated by haptoglobin. STUDY DESIGN AND METHODS: 164 consecutively treated children undergoing surgery for congenital heart disease were evaluated for associations between free Hb and haptoglobin and clinical outcomes, physiologic metrics, and biomarkers of inflammation RESULTS: Higher perioperative free Hb levels (and lower haptoglobin levels) were associated with mortality, nosocomial infection, thrombosis, hours of intubation and inotropes, increased interleukin-6, peak serum lactate levels, and lower nadir mean arterial pressures...
March 30, 2018: Transfusion
https://www.readbyqxmd.com/read/29596409/distinct-inflammatory-profile-underlies-pathological-increases-in-creatinine-levels-associated-with-plasmodium-vivax-malaria-clinical-severity
#6
Luís A B Cruz, Manoel Barral-Netto, Bruno B Andrade
BACKGROUND: Although Plasmodium vivax infection is a frequent cause of malaria worldwide, severe presentations have been more regularly described only in recent years. In this setting, despite clinical descriptions of multi-organ involvement, data associating it with kidney dysfunction are relatively scarce. Here, renal dysfunction is retrospectively analyzed in a large cohort of vivax malaria patients with an attempt to dissect its association with disease severity and mortality, and to determine the role of inflammation in its progression...
March 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29564990/impact-of-delayed-whole-blood-processing-time-on-plasma-levels-of-mir-1-and-mir-423-5p-up-to-24-hours
#7
Danielle Pazzotti Borges, Edecio Cunha-Neto, Edimar A Bocchi, Vagner Oliveira Carvalho Rigaud
BACKGROUND: Circulating cell-free miRNAs hold great promise as a new class of biomarkers due to their high stability in body fluids and association with disease stages. However, even using sensitive and specific methods, technical challenges are associated with miRNA analysis in body fluids. A major source of variation in plasma and serum is the potential cell-derived miRNA contamination from hemolysis. OBJECTIVES: To evaluate the effect of the delayed whole blood processing time on the concentrations of miR-1 and -423-5p...
March 21, 2018: MicroRNA
https://www.readbyqxmd.com/read/29523276/analytical-validation-of-soluble-fms-like-tyrosine-and-placental-growth-factor-assays-on-b%C3%A2-r%C3%A2-a%C3%A2-h%C3%A2-m%C3%A2-s-kryptor-compact-plus-automated-immunoassay-platform
#8
Siaw Li Chan, Sarosh Rana, Sireesha Chinthala, Saira Salahuddin, Kiang-Teck J Yeo
BACKGROUND: Preeclampsia is one of the leading hypertensive disorders of pregnancy. Angiogenic biomarkers such as anti-angiogenic factor soluble fms-like tyrosine kinase 1 (sFlt1) and pro-angiogenic factor placental growth factor (PlGF) are involved in the pathophysiology of preeclampsia. OBJECTIVE: The aim of this study is to validate the analytical performance of sFlt1 and PlGF on the B·R·A·H·M·S KRYPTOR Compact Plus (ThermoFisher Scientific). STUDY DESIGN: We examined K2 -EDTA plasma samples from 50 patients on B·R·A·H·M·S KRYPTOR Compact Plus, an automated immunoassay platform...
January 2018: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29520111/evaluation-of-several-methodological-challenges-in-circulating-mirna-qpcr-studies-in-patients-with-head-and-neck-cancer
#9
Dennis Poel, Tineke E Buffart, Jolanda Oosterling-Jansen, Henk Mw Verheul, Jens Voortman
Circulating microRNAs (ci-miRNAs) in blood have emerged as promising diagnostic, prognostic and predictive biomarkers in cancer. Many clinical studies currently incorporate studies that assess ci-miRNAs. Validation of the clinical significance of candidate biomarker miRNAs has proven to be difficult, potentially resulting from vast discrepancies in the detection methodology as well as biological variability. In the current study, the influence of several methodological factors on ci-miRNA detection was evaluated as well as short-term biological variability in patients with head and neck cancer...
March 9, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29478972/circulating-concentrations-of-redox-biomarkers-do-not-improve-the-prediction-of-adverse-cardiovascular-events-in-patients-with-type-2-diabetes-mellitus
#10
Maxime Cournot, Elena Burillo, Pierre-Jean Saulnier, Cynthia Planesse, Elise Gand, Michaela Rehman, Stéphanie Ragot, Philippe Rondeau, Aurélie Catan, Marie-Paule Gonthier, Eva Feigerlova, Olivier Meilhac, Samy Hadjadj
BACKGROUND: Despite pathophysiological relevance and promising experimental data, the usefulness of biomarkers of oxidative stress for cardiac risk prediction is unclear. The aim of our study was to investigate the prognostic value of 6 biomarkers exploring different pathways of oxidative stress for predicting adverse cardiovascular outcomes in patients with type 2 diabetes mellitus beyond established risk factors. METHODS AND RESULTS: The SURDIAGENE (Survie, Diabete de type 2 et Genetique) prospective cohort study consecutively recruited 1468 patients with type 2 diabetes mellitus...
February 25, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29395255/lessons-learned-from-bone-marrow-failure-in-systemic-lupus-erythematosus-case-reports-and-review-of-the-literature
#11
Erik Anderson, Bhakti Shah, Anne Davidson, Richard Furie
OBJECTIVE: In the present review, four new cases of bone marrow failure are presented and the potential contribution of systemic lupus erythematosus (SLE) is discussed. Furthermore, a comprehensive literature review of cases of autoimmune myelofibrosis (AIMF), aplastic anemia (AA), and paroxysmal nocturnal hemoglobinuria (PNH) with concurrent SLE aims to allow their direct comparison. Based on a clearer characterization of reported cases and our own experience, diagnostic and therapeutic strategies of these disorders in SLE are proposed based on lessons learned from the present and previous cases...
December 8, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/29365317/quantitative-proteomics-of-plasma-vesicles-identify-novel-biomarkers-for-hemoglobin-e-%C3%AE-thalassemic-patients
#12
Janejira Kittivorapart, Vanja Karamatic Crew, Marieangela C Wilson, Kate J Heesom, Noppadol Siritanaratkul, Ashley M Toye
Hemoglobin E (HbE)/β-thalassemia has a wide spectrum of clinical manifestations that cannot be explained purely by its genetic background. Circulating extracellular vesicles (EVs) are one factor that likely contributes to disease severity. This study has explored the differences in protein composition and quantity between EVs from HbE/β-thalassemic patients and healthy individuals. We used tandem mass tag labeling mass spectrometry to analyze the EV proteins isolated from the plasma of 15 patients compared with the controls...
January 23, 2018: Blood Advances
https://www.readbyqxmd.com/read/29306988/acute-phase-response-after-fatal-traumatic-brain-injury
#13
Benjamin Ondruschka, Sandra Schuch, Dirk Pohlers, Heike Franke, Jan Dreßler
An inflammatory response occurring after fatal traumatic brain injury (TBI) initiates time-dependent cascades of acute phase response. This may offer the potential to monitor postmortem biomarker levels of several pro-inflammatory cytokines to gain information about the cause of death and the trauma survival time. Cerebrospinal fluid (CSF) and serum samples were collected from forensic autopsies of 95 adult cadavers after postmortem intervals up to 6 days. The cases were divided according to their cause of death into fatal TBI (n = 46) with different survival times and age- and gender-matching non-TBI fatalities as controls (n = 49)...
March 2018: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29248304/glucose-6-phosphate-dehydrogenase-deficiency-mimicking-atypical-hemolytic-uremic-syndrome
#14
Patrick R Walsh, Sally Johnson, Vicky Brocklebank, Jacobo Salvatore, Martin Christian, David Kavanagh
A 4-year-old boy presented with nonimmune hemolysis, thrombocytopenia, and acute kidney injury. Investigations for an underlying cause failed to identify a definitive cause and a putative diagnosis of complement-mediated atypical hemolytic uremic syndrome (aHUS) was made. The patient was started initially on plasma exchange and subsequently eculizumab therapy, after which his kidney function rapidly improved. While on eculizumab therapy, despite adequate complement blockade, he presented 2 more times with hemolytic anemia and thrombocytopenia, but without renal involvement...
February 2018: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29212284/systematic-review-and-critique-of-circulating-mirnas-as-biomarkers-of-stage-i-ii-non-small-cell-lung-cancer
#15
REVIEW
Francesca Moretti, Paola D'Antona, Emanuele Finardi, Marco Barbetta, Lorenzo Dominioni, Albino Poli, Elisabetta Gini, Douglas M Noonan, Andrea Imperatori, Nicola Rotolo, Maria Cattoni, Paola Campomenosi
Selected circulating microRNAs (miRNAs) have been suggested for non-invasive screening of non-small cell lung cancer (NSCLC), however the numerous proposed miRNA signatures are inconsistent. Aiming to identify miRNAs suitable specifically for stage I-II NSCLC screening in serum/plasma samples, we searched the databases "Pubmed", "Medline", "Scopus", "Embase" and "WOS" and systematically reviewed the publications reporting quantitative data on the efficacy [sensitivity, specificity and/or area under the curve (AUC)] of circulating miRNAs as biomarkers of NSCLC stage I and/or II...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29169855/hypertensive-complications-of-pregnancy-a-clinical-overview
#16
C Antza, R Cifkova, V Kotsis
Hypertensive disorders in pregnancy are a worldwide health problem for women and their infants complicating up to 10% of pregnancies and associated with increased maternal and neonatal morbidity and mortality. In Europe, 2.3-3% of pregnancies are complicated by preeclampsia. Gestational diabetes, obesity, no previous or multiple births, maternal age less than 20 or greater than 35years old and thrombophilia can be some of the possible factors related to increased risk for hypertension in pregnancy. Complications of hypertension during pregnancy affect both mothers and their infants...
November 21, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28969365/evidence-for-potential-underestimation-of-clinical-folate-deficiency-in-resource-limited-countries-using-blood-tests
#17
REVIEW
Asok C Antony
Although a low serum folate concentration is a useful biomarker of pure folate deficiency, the presence of vitamin B12 deficiency or hemolysis or both in individuals with low folate status predictably raises serum folate levels. Therefore, in resource-limited settings where dietary folate deficiency can coexist with vitamin B12 deficiency or malaria or both, the serum folate concentration can range from normal to high, leading to serious underestimation of tissue folate status. This review traces the genesis of an inappropriate overreliance on the serum folate concentration to rule out folate deficiency in vulnerable populations of women and children...
August 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28880867/oral-tetrahydrouridine-and-decitabine-for-non-cytotoxic-epigenetic-gene-regulation-in-sickle-cell-disease-a-randomized-phase-1-study
#18
RANDOMIZED CONTROLLED TRIAL
Robert Molokie, Donald Lavelle, Michel Gowhari, Michael Pacini, Lani Krauz, Johara Hassan, Vinzon Ibanez, Maria A Ruiz, Kwok Peng Ng, Philip Woost, Tomas Radivoyevitch, Daisy Pacelli, Sherry Fada, Matthew Rump, Matthew Hsieh, John F Tisdale, James Jacobberger, Mitch Phelps, James Douglas Engel, Santhosh Saraf, Lewis L Hsu, Victor Gordeuk, Joseph DeSimone, Yogen Saunthararajah
BACKGROUND: Sickle cell disease (SCD), a congenital hemolytic anemia that exacts terrible global morbidity and mortality, is driven by polymerization of mutated sickle hemoglobin (HbS) in red blood cells (RBCs). Fetal hemoglobin (HbF) interferes with this polymerization, but HbF is epigenetically silenced from infancy onward by DNA methyltransferase 1 (DNMT1). METHODS AND FINDINGS: To pharmacologically re-induce HbF by DNMT1 inhibition, this first-in-human clinical trial (NCT01685515) combined 2 small molecules-decitabine to deplete DNMT1 and tetrahydrouridine (THU) to inhibit cytidine deaminase (CDA), the enzyme that otherwise rapidly deaminates/inactivates decitabine, severely limiting its half-life, tissue distribution, and oral bioavailability...
September 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28817980/pathways-to-pulmonary-hypertension-in-sickle-cell-disease-the-search-for-prevention-and-early-intervention
#19
REVIEW
Natalie R Shilo, Claudia R Morris
Pulmonary hypertension (PH) develops in a significant number of patients with sickle cell disease (SCD), resulting in increased morbidity and mortality. This review focuses on PH pathophysiology, risk stratification, and new recommendations for screening and treatment for patients with SCD. Areas covered: An extensive PubMed literature search was performed. While the pathophysiology of PH in SCD is yet to be fully deciphered, it is known that the etiology is multifactorial; hemolysis, hypercoagulability, hypoxemia, ischemic-reperfusion injury, oxidative stress, and genetic susceptibility all contribute in varying degrees to endothelial dysfunction...
October 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28730771/biomarkers-for-the-early-detection-of-relapses-in-metastatic-colorectal-cancers
#20
Gabriela Chereches, Otilia Barbos, Rares Buiga, Ovidiu Balacescu, Dana Iancu, Nicolae Todor, Loredana Balacescu, Nicu Miron, Nona Bejinariu, Tudor-Eliade Ciuleanu
PURPOSE: To assess prognostic/predictive value of carcinoembryonic antigen (CEA), transthyretin (TRT), αenolase (NNE), β2-microglobulin (β2-micro), B-cell activating factor (BAFF) and circulating tumor cells (CTCs) in metastatic colorectal cancer (mCRC) patients treated with chemotherapy with or without bevacizumab. METHODS: 72 histologically confirmed mCRC patients treated at Oncology Institute Cluj were included. Biomarker levels were measured through validated methods...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
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