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leukocyte esterase

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https://www.readbyqxmd.com/read/28627813/effect-of-the-oxidant-antioxidant-system-in-seminal-plasma-on-varicocele-and-idiopathic-infertility-in-male-humans
#1
Hayrullah Yazar, Fikret Halis, Yasemin Nasir, Derya Guzel, Mehmet Akdogan, Ahmet Gokce
BACKGROUND: The aim of this study was to investigate seminal oxidant-antioxidant activity in idiopathic and varicocele infertility in men. METHODS: Total anti-oxidant capacity (TAC), total oxidant status (TOS), paraoxonase (PON1), aryl esterase (ARE), and total thiol levels (TTL) were measured in seminal plasma with an autoanalyzer. The TOS/TAC ratio was determined as the oxidative stress index (OSI). A histopathological evaluation of the sperm was performed in the andrology laboratory of the hospital...
May 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28627004/utility-of-the-urine-reagent-strip-leukocyte-esterase-assay-for-the-diagnosis-of-meningitis-in-resource-limited-settings-meta-analysis
#2
REVIEW
William Bortcosh, Mark Siedner, Ryan W Carroll
OBJECTIVE: Diagnosis of bacterial meningitis often requires cytometry, chemistry, and/or microbiologic culture capabilities. Unfortunately, laboratory resources in low resource settings (LRS) often lack the capacity to perform these studies. We sought to determine whether the presence of white blood cells in CSF detected by commercially available urine reagent strips could aid in the diagnosis of bacterial meningitis. METHODS: We searched PubMed for studies published between 1980 - 2016 that investigated the use of urine reagent strips to identify cerebrospinal fluid (CSF) pleocytosis...
June 19, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28622967/new-markers-of-urinary-tract-infection
#3
REVIEW
Anna Masajtis-Zagajewska, Michal Nowicki
Urinary tract infection (UTI) is the most common bacterial infection independent of age. It is also one of the most common causes of hospitalizations for infections among elderly people and the most common indication for antibiotic prescriptions in primary care. Both diagnostics and management of lower and upper urinary tract infections provide challenges in clinical practice due to their high prevalence and recurrence, and worldwide increase of antibiotic resistance. The clinical symptoms of UTI are often uncharacteristic or asymptomatic...
June 13, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28608672/electrochemical-substrate-and-assay-for-esterolytic-activity-of-human-white-blood-cells
#4
Douglas Hanson, Travis Menard, Stanton McHardy, Andrew Fleischman, Waldemar Gorski
The ester 4-((tosyl-l-alanyl)oxy)phenyl tosyl-l-alaninate (TAPTA) was synthesized and tested as a substrate for leukocyte esterase (LE), an enzyme produced by leukocytes (white blood cells). In the presence of LE, TAPTA released a redox-active fragment whose oxidation at an electrode provided a direct numerical measure of LE activity. The assays showed that LE recognized TAPTA as its substrate with the Michaelis constant Km and Imax equal to 0.24 mM and 0.13 mA cm(-1), respectively. The esterolytic activity of leukocyte suspensions was determined by using the internally calibrated electrochemical continuous enzyme assay (ICECEA)...
June 27, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28587696/uncomplicated-urinary-tract-infections-in-the-emergency-department-a-review-of-local-practice-patterns
#5
Elizabeth Poon, Lauren Self, Shelley L McLeod, Sean Caine, Bjug Borgundvaag
OBJECTIVES: To determine the number of urine cultures ordered for women who presented to the emergency department (ED) with symptoms of uncomplicated UTI, and whether a culture result impacted subsequent management. METHODS: This was a retrospective chart review of non-pregnant women aged 18-39 presenting to one of two academic EDs with a discharge diagnosis of uncomplicated UTI over a one-year study period. Patients were excluded if there was documentation of fever, immunocompromised state, diabetes mellitus, absence of lower urinary tract symptoms, ED administration of intravenous antibiotics, a previous UTI treated with antibiotics in the last 90 days, two weeks post-partum or post-instrumentation...
June 7, 2017: CJEM
https://www.readbyqxmd.com/read/28570146/recombinant-c1-esterase-inhibitor-reduces-cytokine-storm-in-an-ex-vivo-whole-blood-model
#6
Vladimir A Bobkov, Roman V Tikhonov, Alexander M Shuster, Dmitry A Poteryaev, Veronika N Bade
C1 esterase inhibitor (C1INH) is an abundant component of blood plasma (the average concentration is 250 mg/L); it is known to be involved in several biological processes, for instance, in the regulation of the coagulation system, adhesion of leukocytes on endothelial cells, and in the regulation of complement and kallikrein cascades. Lately, the role of C1INH in immunomodulation has gained considerable attention. We used an ex vivo whole blood model to examine the influence of C1INH and its mutated variants on the inflammatory cytokines interleukin (IL)-6, tumor necrosis factor-α (TNFα), and IL-1β...
June 1, 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/28558478/bacteria-on-urine-microscopy-is-not-associated-with-systemic-infection-in-patients-with-obstructing-urolithiasis
#7
Felix Cheung, Charles A Loeb, Michael P Croglio, Wayne C Waltzer, Steven J Weissbart
INTRODUCTION: Determining if bacterial presence on urine microscopy represents clinical infection is important as urinary drainage is indicated in patients with obstructing urolithiasis and concomitant urinary tract infection. We aim to investigate if the presence of bacteria on urine microscopy is associated with markers of infection in patients with obstructing urolithiasis presenting to the emergency room. METHODS: A cross-sectional study was performed on 199 patients with obstructing urolithiasis divided into two groups according to the presence of bacteria on urine microscopy...
May 30, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28549361/-leukocyte-esterase-as-a-diagnostic-tool-for-an-infectious-disease-of-the-knee
#8
S U Ceja-Picazo, S Fuentes-Figueroa, A H Rivera-Villa, A R Hernández-Salgado, R Torres-González, A M Pérez, J A Hernández-García, J M Pérez-Atanasio
BACKGROUND: Articular infection is an orthopedic challenge due to its difficult diagnosis and devastating results. Various diagnostic studies exist: culture, ESR, CRP, count of leukocytes, among others, but none is specific, they all take more than 30 minutes to complete, and require complex infrastructure. In this study, we determine the sensitivity and specificity of the leukocyte esterase for detection of an infectious process joint in Mexican population. MATERIAL AND METHODS: During November 2015 to April 2016, we obtained synovial fluid from two groups of patients: one with a diagnosis of synovial joint infection with or without implant, and the control group, without infection but with degenerative pathology of the knee...
November 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28483211/interpretation-of-leukocyte-esterase-for-the-detection-of-periprosthetic-joint-infection-based-on-serologic-markers
#9
Majd Tarabichi, Andrew N Fleischman, Alisina Shahi, Shaoqi Tian, Javad Parvizi
BACKGROUND: Leukocyte esterase (LE) is a rapid, point-of-care test for periprosthetic joint infection. The purpose of this study was to provide a tool for interpreting LE based on an initial serologic screening. METHODS: We reviewed the records of 319 patients who had erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) screening before hip or knee aspiration; 102 had elevated ESR and CRP levels, 64 had an elevated ESR or CRP level, and 153 had normal serology...
March 27, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28461959/the-role-of-biomarkers-in-the-diagnosis-of-periprosthetic-joint-infection
#10
AliSina Shahi, Javad Parvizi
The role of serum erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) as the first line for evaluating a patient with periprosthetic joint infection (PJI) has been debunked.We are living in the era of biomarkers for the diagnosis of PJI, and to that effect, several biomarkers have been introduced such as synovial fluid alpha defensin and leukocyte esterase.The synovial fluid leukocyte esterase test has a low cost, is accessible, and has provided promising results for diagnosing PJI.There is an urgent need for an accurate and reliable serum biomarker for diagnosing patients with PJI...
July 2016: EFORT Open Rev
https://www.readbyqxmd.com/read/28444086/performance-of-the-dipstick-screening-test-as-a-predictor-of-negative-urine-culture
#11
Alexandre Gimenes Marques, André Mario Doi, Jacyr Pasternak, Márcio Dos Santos Damascena, Carolina Nunes França, Marinês Dalla Valle Martino
Objective: To investigate whether the urine dipstick screening test can be used to predict urine culture results. Methods: A retrospective study conducted between January and December 2014 based on data from 8,587 patients with a medical order for urine dipstick test, urine sediment analysis and urine culture. Sensitivity, specificity, positive and negative predictive values were determined and ROC curve analysis was performed. Results: The percentage of positive cultures was 17...
January 2017: Einstein
https://www.readbyqxmd.com/read/28433719/isolation-and-characterization-of-monocyte-macrophage-from-peripheral-blood-of-half-smooth-tongue-sole-cynoglossus-semilaevis
#12
Zhenxia Sha, Linqing Wang, Luming Sun, Yadong Chen, Yuan Zheng, Mei Xin, Chen Li, Songlin Chen
In the present study, the peripheral blood cells of half smooth tongue sole (Cynoglossus semilaevis) were examined by blood smear under the light microscopy. The proportion of main types of blood cells are as following: erythrocyte occupied the majority (92.3%), followed by thrombocyte (4.15%), granulocyte (1.7%), lymphocyte (1.5%) and monocyte (0.3%), respectively. Meanwhile, the isolation method of monocytes was established, by density gradient centrifugation to isolate mononuclear leukocytes of peripheral blood...
April 19, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28317491/predictive-value-of-the-leukocyte-esterase-test-for-the-detection-of-pleocytosis-in-cerebrospinal-fluid
#13
Shervin Shokouhi, Ilad Alavi Darazam, Mehdi Karamipour, HasanAli Ahmadi, Mohammad M Sajadi
BACKGROUND: Rapid and accurate diagnostic tests for patients with suspected bacterial meningitis is crucial to prevent subsequent mortality and morbidity. We carried out this study to determine diagnostic value of the rapid leukocyte esterase (LE) strip test to identify PMN pleocytosis in cerebral spinal fluid. METHODS: A total of 126 patients with suspected meningitis were enrolled in this prospective study. Microscopic examination (cell count and differential) and leukocyte esterase (LE) rapid strip test was performed on cerebrospinal fluid (CSF) samples...
March 17, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28303585/the-effect-of-depth-of-centrifuged-synovial-fluid-on-leukocyte-esterase-test-for-periprosthetic-joint-infection
#14
Pakpoom Ruangsomboon, Sriprapa Chinprasertsuk, Varanya Khejonnit, Keerati Chareancholvanich
Centrifugation of aspirated synovial fluid before leukocytes esterase (LE) testing for diagnosing periprosthetic joint infection (PJI) may make blood tinged specimens interpretable. We aimed to establish the proper sampling depth of centrifuged specimens for LE testing as one diagnostic criterion and also AS-D chloroacetate esterase (CAE) staining testing as an adjunctive tool. A definite PJI knee joint group and an aseptic primary total knee arthroplasty control group were studied quasi-experimentally (N = 46)...
March 17, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28295488/identification-of-contaminant-interferences-which-cause-positive-urine-reagent-test-strip-reactions-in-a-cage-setting-for-the-laboratory-housed-nonhuman-primate-beagle-dog-and-sprague-dawley-rat
#15
William D Siska, Dennis J Meyer, Albert E Schultze, Catherine Brandoff
BACKGROUND: A high incidence of unexplained positive urine reagent test strip reactions was observed in healthy, untreated laboratory-housed nonhuman primates, Beagle dogs, and Sprague-Dawley rats. Exposure of urine to cage pan contaminants was the suspected cause of the positive reactions. OBJECTIVES: The objective of this study was to identify cage pan contaminants which could cause positive reagent test strip reactions. METHODS: Contaminated urine was simulated by exposing water samples to cage pan contaminants, including cleaning solutions, feces from nonhuman primates, Beagle dogs, and Sprague-Dawley rats, certified laboratory animal diets, and dietary enrichments (vegetables, fruits, and food treats)...
March 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28284733/utility-of-a-routine-urinalysis-in-children-who-require-clean-intermittent-catheterization
#16
C S Forster, D B Haslam, E Jackson, S L Goldstein
BACKGROUND: Children who require clean intermittent catheterization (CIC) frequently have positive urine cultures. However, diagnosing a urinary tract infection (UTI) can be difficult, as there are no standardized criteria. Routine urinalysis (UA) has good predictive accuracy for UTI in the general pediatric population, but data are limited on the utility of routine UA in the population of children who require CIC. OBJECTIVE: To determine the utility of UA parameters (e...
February 24, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28215967/leukocyte-esterase-strip-test-can-predict-subsequent-failure-following-reimplantation-in-patients-with-periprosthetic-joint-infection
#17
Michael M Kheir, Colin T Ackerman, Timothy L Tan, Andrea Benazzo, Eric H Tischler, Javad Parvizi
BACKGROUND: Leukocyte esterase (LE) strip test is an accurate marker for diagnosing periprosthetic joint infection (PJI). This study aims to determine if LE is a good predictor of persistent infection and/or subsequent failure in patients undergoing reimplantation. METHODS: This single-institution study prospectively recruited and retrospectively analyzed 109 patients who underwent two-stage exchange treatment of PJI, from 2009-2016, and had an LE test performed at time of reimplantation...
January 26, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28169050/the-importance-of-urine-concentration-on-the-diagnostic-performance-of-the-urinalysis-for-pediatric-urinary-tract-infection
#18
Pradip P Chaudhari, Michael C Monuteaux, Pinkey Shah, Richard G Bachur
STUDY OBJECTIVE: The presence of leukocyte esterase by urine dipstick and microscopic pyuria are both indicators of possible urinary tract infection. The effect of urine concentration on the diagnostic performance of the urinalysis for pediatric urinary tract infection has not been studied. Our objective is to determine whether the urinalysis performance for detecting urinary tract infection varies by urine concentration as measured by specific gravity. METHODS: This was a retrospective cross-sectional study of the urine laboratory results of children younger than 13 years who presented to the emergency department during 68 months and had a paired urinalysis and urine culture obtained...
February 3, 2017: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/28161186/a-dairy-herd-level-study-of-postpartum-diseases-and-their-association-with-reproductive-performance-and-culling
#19
J Dubuc, J Denis-Robichaud
The objectives of this study were to quantify the herd-level prevalence of postpartum diseases in a large number of dairy farms, and to identify prevalence alarm levels of these diseases based on association with a low prevalence of success at first service, with a high prevalence of pregnancy loss following pregnancy diagnosis at first service, and with a high prevalence of postpartum culling. A total of 126 commercial dairy herds were enrolled in this cohort study, and the herd was the unit of interest. Twenty cows from every herd were enrolled during the study period (a total of 2,520 lactating cows in the study)...
April 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28108745/leukocyte-esterase-as-a-biomarker-in-the-diagnosis-of-periprosthetic-joint-infection
#20
Chi Wang, Rui Li, Qi Wang, Jinyan Duan, Chengbin Wang
BACKGROUND Total joint arthroplasty (TJA) has been one of the most rewarding interventions for treating patients suffering from joint disorders. However, periprosthetic joint infection (PJI) is a serious complication that frequently accompanies TJA. Our study aimed to investigate the application of the leukocyte esterase (LE) strip in the diagnosis of PJI. MATERIAL AND METHODS From October 2014 to July 2015, 72 patients who had undergone joint puncture after arthroplasty in our hospital were enrolled in this trial...
January 21, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
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