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Biomarker appendicitis

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https://www.readbyqxmd.com/read/29135899/new-oxidative-stress-markers-useful-in-the-diagnosis-of-acute-appendicitis-in-children-thiol-disulfide-homeostasis-and-the-asymmetric-dimethylarginine-level
#1
Bahri Elmas, Turan Yildiz, Hayrullah Yazar, Zekeriya İlçe, Ceylan Bal, Betül Özbek, Yusuf Yürümez
OBJECTIVES: The aim of this study was to evaluate 2 new oxidative stress markers, thiol/disulfide homeostasis status and the asymmetric dimethylarginine (ADMA) level, in children with acute appendicitis (AA) and to evaluate their diagnostic utility. METHODS: This case-control study included 45 patients with AA and 35 healthy children. Age, sex, white blood cell count, neutrophil-to-lymphocyte ratio, high-sensitivity C-reactive protein (hs-CRP) level, ultrasonographic findings, thiol/disulfide homeostasis parameters (native and total thiol levels, native thiol/total thiol ratios [antioxidant parameters], and disulfide, disulfide/native thiol, and disulfide/total thiol ratios [oxidant parameters]), and the ADMA level were compared between the 2 groups...
November 14, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28951011/biomarkers-to-estimate-the-probability-of-complicated-appendicitis
#2
Meghan C Daly, Daniel von Allmen, Hector R Wong
BACKGROUND: The conventional paradigm that all children with appendicitis require an appendectomy is being challenged by the idea that some patients may be successfully managed non-operatively. The study aimed to determine if matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinase (TIMPs) are candidate biomarkers for estimating the probability of complicated appendicitis in pediatric patients. METHODS: The study was a single-institution, prospective cohort study...
September 9, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28744697/prospective-validation-of-neutrophil-to-lymphocyte-ratio-as-a-diagnostic-and-management-adjunct-in-acute-appendicitis
#3
A Khan, M Riaz, Michael E Kelly, W Khan, R Waldron, K Barry, I Z Khan
BACKGROUND: No optimal biomarker exists that accurately diagnoses appendicitis or predicts severity, estimates post-operative complications or total length of hospital stay (LOS). AIM: To prospectively validate the utility of neutrophil-to-lymphocyte (NLR) ratio in predicting the severity of appendicitis, LOS, and 30-day complication rates. METHODS: Patients who were admitted with a provisional diagnosis of acute appendicitis over a period of 18 months (Oct 2014-April 2016) were included...
July 25, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28635513/evaluation-of-platelet-indices-and-red-cell-distribution-width-as-new-biomarkers-for-the-diagnosis-of-acute-appendicitis
#4
Noha Boshnak, Mohamed Boshnaq, Hatem Elgohary
BACKGROUND: Debate around the value of laboratory tests in establishing the diagnosis of acute appendicitis (AA) still continues. This prospective study aimed to investigate the changes in mean platelet volume (MPV), platelet distribution width (PDW), and red cell distribution width (RDW) with the diagnosis of acute appendicitis. METHOD: 200 patients who underwent emergency appendectomy were included. According to postoperative histology, patients were divided into three groups: acute non-complicated, acute complicated appendicitis (positive appendicectomy groups), and negative appendectomy group...
February 16, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28624043/composition-of-the-cellular-infiltrate-in-patients-with-simple-and-complex-appendicitis
#5
Ramon R Gorter, Emma C E Wassenaar, Onno J de Boer, Roel Bakx, Joris J T H Roelofs, Madeleine J Bunders, L W Ernst van Heurn, Hugo A Heij
BACKGROUND: It is now well established that there are two types of appendicitis: simple (nonperforating) and complex (perforating). This study evaluates differences in the composition of the immune cellular infiltrate in children with simple and complex appendicitis. MATERIALS AND METHODS: A total of 47 consecutive children undergoing appendectomy for acute appendicitis between January 2011 and December 2012 were included. Intraoperative criteria were used to identify patients with either simple or complex appendicitis and were confirmed histopathologically...
June 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28607552/procalcitonin-guided-antibiotics-after-surgery-for-peritonitis-a-randomized-controlled-study
#6
Juliette C Slieker, Steve Aellen, Philippe Eggimann, Valentine Guarnero, Markus Schäfer, Nicolas Demartines
BACKGROUND: Serum procalcitonin (PCT) is a useful biomarker to tailor the duration of antibiotics in respiratory infections. The objective of this study was to determine whether PCT levels could tailor postoperative antibiotic therapy in patients operated for peritonitis. METHOD: Patients with peritonitis were randomized postoperatively. The control group received antibiotics for a defined duration according to institutional guidelines. In the study group, antibiotics were stopped based on serum PCT levels...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28456849/can-common-serum-biomarkers-predict-complicated-appendicitis-in-children
#7
Augusto Zani, Warwick J Teague, Simon A Clarke, Munther J Haddad, Sanjeev Khurana, Thomas Tsang, Ramesh M Nataraja
PURPOSE: As appendicitis in children can be managed differently according to the severity of the disease, we investigated whether commonly used serum biomarkers on admission could distinguish between simple and complicated appendicitis. METHODS: Admission white blood cell (WBC), neutrophil (NEU), and C-reactive protein (CRP) levels were analysed by ROC curve, and Kruskal-Wallis and contingency tests. Patients were divided according to age and histology [normal appendix (NA), simple appendicitis (SA), complicated appendicitis (CA)]...
July 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28271679/the-diagnostic-value-of-scube1-in-acute-appendicitis
#8
E Sonmez, A Dursun, B Gulen, H Metin, O F Ozer
BACKGROUND: SCUBE1 has recently been studied as a diagnostic biomarker for acute coronary syndrome, ischemic stroke, and acute mesenteric ischemia. The aim of this study is to evaluate the value of SCUBE1 and routine parameters used in patients diagnosed with acute appendicitis. METHODS: Of the 150 patients admitted to the emergency department whose initial diagnosis were acute appendicitis (AA), 103 patients were excluded from the study for various reasons. Forty-seven patients with a definitive diagnose of AA and 43 volunteers were enrolled in the study...
March 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28256555/selection-characterization-and-application-of-artificial-dna-aptamer-containing-appended-bases-with-sub-nanomolar-affinity-for-a-salivary-biomarker
#9
Hirotaka Minagawa, Kentaro Onodera, Hiroto Fujita, Taiichi Sakamoto, Joe Akitomi, Naoto Kaneko, Ikuo Shiratori, Masayasu Kuwahara, Katsunori Horii, Iwao Waga
We have attained a chemically modified DNA aptamer against salivary α-amylase (sAA), which attracts researchers' attention as a useful biomarker for assessing human psychobiological and social behavioural processes, although high affinity aptamers have not been isolated from a random natural DNA library to date. For the selection, we used the base-appended base (BAB) modification, that is, a modified-base DNA library containing (E)-5-(2-(N-(2-(N6-adeninyl)ethyl))carbamylvinyl)-uracil in place of thymine. After eight rounds of selection, a 75 mer aptamer, AMYm1, which binds to sAA with extremely high affinity (Kd < 1 nM), was isolated...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28125214/preassembled-fluorescent-multivalent-probes-for-the-imaging-of-anionic-membranes
#10
Felicia M Roland, Evan M Peck, Douglas R Rice, Bradley D Smith
A new self-assembly process known as Synthavidin (synthetic avidin) technology was used to prepare targeted probes for near-infrared fluorescence imaging of anionic membranes and cell surfaces, a hallmark of many different types of disease. The probes were preassembled by threading a tetralactam macrocycle with six appended zinc-dipicolylamine (ZnDPA) targeting units onto a linear scaffold with one or two squaraine docking stations to produce hexavalent or dodecavalent fluorescent probes. A series of liposome titration experiments showed that multivalency promoted stronger membrane binding by the dodecavalent probe...
April 19, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/27922766/diagnostic-value-of-high-mobility-group-box-1-hmgb1-protein-in-acute-and-perforated-appendicitis
#11
Shabanali Alizadeh, Ali Ghazavi, Ali Ganji, Ghasem Mosayebi
AIM: Acute appendicitis is the most common cause of abdominal surgical emergencies. Early diagnosis of appendicitis can reduce perforation and mortality rate. High-mobility group box 1 (HMGB1) protein has been identified as a pro-inflammatory factor and its elevated serum levels have been noted in different diseases. So, the aim of this study was to determine the serum levels of HMGB1 in patients with acute and perforated appendicitis in compare to normal appendix. MATERIAL AND METHODS: For this purpose, serum samples were obtained from 81 patients with primary criteria-based appendicitis 6 hr before and 72 hr after appendectomy, in which serum levels of HMGB1 were analyzed by enzyme-linked immunosorbent assay...
December 6, 2016: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/27876541/diagnostic-performance-of-a-biomarker-panel-as-a-negative-predictor-for-acute-appendicitis-in-adult-ed-patients-with-abdominal-pain
#12
David S Huckins, Karen Copeland, Wesley Self, Cheryl Vance, Phyllis Hendry, Keith Borg, Joseph Gogain
OBJECTIVES: Evaluate the diagnostic accuracy of the APPY1TM biomarker panel, previously described for use in pediatric patients, for identifying adult ED patients with abdominal pain who are at low risk of acute appendicitis. METHODS: This study prospectively enrolled subjects >18years of age presenting to seven U.S. emergency departments with <72hours of abdominal pain suggesting possible acute appendicitis. The APPY1 panel was performed on blood samples drawn from each patient at the time of initial evaluation and results were correlated with the final diagnosis either positive or negative for acute appendicitis...
March 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27769665/ischemia-modified-albumin-as-a-predictor-of-the-severity-of-acute-appendicitis
#13
Murat Özgür Kılıç, Cem Emir Güldoğan, İlhan Balamir, Mesut Tez
BACKGROUND: The early prediction of gangrenous/perforated appendicitis is of great importance for the surgical planning, further treatments, and predicting the course of disease. Ischemia-modified albumin (IMA) was previously reported as a biomarker of various ischemia-based diseases. Our aim is to determine the predictive value of serum IMA in the severity of acute appendicitis. METHODS: Sixty-two patients who underwent urgent appendectomy were included in the study...
January 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27760719/diagnostic-accuracy-of-fibrinogen-to-differentiate-appendicitis-from-nonspecific-abdominal-pain-in-children
#14
Marcos Prada-Arias, José Luis Vázquez, Ángel Salgado-Barreira, Javier Gómez-Veiras, Margarita Montero-Sánchez, José Ramón Fernández-Lorenzo
AIM: The aim of this study was to assess the diagnostic accuracy of the biomarker fibrinogen (FB), along with the more traditional markers white blood cell count (WBC), absolute neutrophil count (ANC), and C-reactive protein (CRP), to discriminate appendicitis from nonspecific abdominal pain (NSAP) in children. METHODS: We prospectively evaluated all children aged 5 to 15 years admitted for suspected appendicitis at an academic pediatric emergency department during 2 years...
January 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27745729/addition-of-a-biomarker-panel-to-a-clinical-score-to-identify-patients-at-low-risk-for-appendicitis
#15
Holly Depinet, Karen Copeland, Joseph Gogain, Halim Hennes, Norman A Paradis, Rebecca Andrews-Dickert, Cheryl W Vance, David S Huckins
BACKGROUND: The diagnosis of pediatric acute appendicitis can be difficult. Although scoring systems such as the Pediatric Appendicitis Score (PAS) are helpful, they lack adequate sensitivity and specificity as standalone diagnostics. When used for risk stratification, they often result in large percentages of moderate-risk patients requiring further diagnostic evaluation. METHODS: We applied a biomarker panel (the APPY1 Test) that has high sensitivity and negative predictive value (NPV) to patients with PAS in the moderate-risk range (3-7) and reclassified those patients with a negative result to the low-risk group...
December 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27609121/evaluation-of-proadrenomedullin-as-a-diagnostic-or-prognostic-biomarker-of-acute-appendicitis-in-children
#16
Concepción Míguez, Cristina Tomatis Souverbielle, Ana Haro, Gloria Guerrero, Laura Pérez-Egido, Mercedes García-Gamiz, Rafael Marañon
INTRODUCTION: A delay in the diagnosis of acute appendicitis (AA), with the added complication of symptoms that mimic other self-limited causes of abdominal pain, can lead to an increase in ruptured appendices and morbimortality. None of the serum biomarkers evaluated to date have shown a predictive value for early diagnosis. OBJECTIVE: The objective of this study was to evaluate the usefulness of proadrenomedullin (MR-proADM) in the diagnosis of AA in children presenting with acute abdominal pain...
December 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27503397/metrics-for-monitoring-cancer-inequities-residential-segregation-the-index-of-concentration-at-the-extremes-ice-and-breast-cancer-estrogen-receptor-status-usa-1992-2012
#17
Nancy Krieger, Nakul Singh, Pamela D Waterman
PURPOSE: To address the paucity of evidence on residential segregation and cancer, we explored their relationship using a new metric: the Index of Concentration at the Extremes (ICE). We focused on breast cancer estrogen receptor (ER) status, a biomarker associated with survival and, etiologically, with social and economic privilege. METHODS: We obtained data from the 13 registry group of US Surveillance, Epidemiology, and End Results (SEER) program for 1992-2012 on all women aged 25-84 who were diagnosed with primary invasive breast cancer (n = 516,382)...
September 2016: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/27495334/biomarkers-of-acute-appendicitis-systematic-review-and-cost-benefit-trade-off-analysis
#18
REVIEW
Amish Acharya, Sheraz R Markar, Melody Ni, George B Hanna
BACKGROUND: Acute appendicitis is the most common surgical emergency and can represent a challenging diagnosis, with a negative appendectomy rate as high as 20 %. This review aimed to evaluate the clinical utility of individual biomarkers in the diagnosis of appendicitis and appraise the quality of these studies. METHODS: A systematic review of the literature between January 2000 and September 2015 using of PubMed, OvidMedline, EMBASE and Google Scholar was conducted...
March 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/27417541/acute-appendicitis-transcript-profiling-of-blood-identifies-promising-biomarkers-and-potential-underlying-processes
#19
Lakhmir S Chawla, Ian Toma, Danielle Davison, Khashayar Vaziri, Juliet Lee, Raymond Lucas, Michael G Seneff, Aoibhinn Nyhan, Timothy A McCaffrey
BACKGROUND: The diagnosis of acute appendicitis can be surprisingly difficult without computed tomography, which carries significant radiation exposure. Circulating blood cells may carry informative changes in their RNA expression profile that would signal internal infection or inflammation of the appendix. METHODS: Genome-wide expression profiling was applied to whole blood RNA of acute appendicitis patients versus patients with other abdominal disorders, in order to identify biomarkers of appendicitis...
July 15, 2016: BMC Medical Genomics
https://www.readbyqxmd.com/read/27351432/urinary-biomarkers-in-pediatric-appendicitis
#20
Martin Salö, Bodil Roth, Pernilla Stenström, Einar Arnbjörnsson, Bodil Ohlsson
PURPOSE: The diagnosis of pediatric appendicitis is still a challenge, resulting in perforation and negative appendectomies. The aim of this study was to evaluate novel biomarkers in urine and to use the most promising biomarkers in conjunction with the Pediatric Appendicitis Score (PAS), to see whether this could improve the accuracy of diagnosing appendicitis. METHODS: A prospective study of children with suspected appendicitis was conducted with assessment of PAS, routine blood tests, and measurements of four novel urinary biomarkers: leucine-rich α-2-glycoprotein (LRG), calprotectin, interleukin 6 (IL-6), and substance P...
August 2016: Pediatric Surgery International
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