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Immunoturbidimetry

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https://www.readbyqxmd.com/read/28672914/the-levels-of-serum-pro-calcitonin-and-high-sensitivity-c-reactive-protein-in-the-early-diagnosis-of-chronic-obstructive-pulmonary-disease-during-acute-exacerbation
#1
Dejie Gao, Xincan Chen, He Wu, Haidong Wei, Jinling Wu
The level of of procalcitonin (PCT) and high-sensitivity C-reactive protein (hs-CRP) in the acute exacerbation of COPD (AECOPD) was investigated. Total of 20 patients with acute exacerbation of COPD who were admitted to the Department of Respiratory Medicine, Binzhou Center Hospital in the period of October 2012 to April 2015 were enrolled in the AECOPD group. According to the color of the sputum, the patients with AECOPD were divided into purulent sputum group (n=8) and non-purulent sputum group (n=12). In addition, 15 healthy people from the outpatient medical center were also selected as healthy control group...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28661913/soluble-endothelial-cell-molecules-and-circulating-endothelial-cells-in-patients-with-venous-thromboembolism
#2
Cláudia Torres, Rui Matos, Sara Morais, Manuel Campos, Margarida Lima
: To evaluate the plasma levels of soluble endothelial cell molecules in patients with venous thromboembolism (VTE) out of the acute phase as compared with healthy individuals. We also investigated the possible associations of the soluble endothelial cell molecules among them, as well as with other clinical and laboratory data, including the numbers of circulating endothelial cells (CEC), circulating endothelial progenitor cells (CEP), and CEC expressing activation-related [cluster of differentiation (CD)54 and CD62E] and procoagulant (CD142) markers...
June 28, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28636270/c-reactive-protein-and-progression-of-vision-loss-in-retinitis-pigmentosa
#3
Yusuke Murakami, Yasuhiro Ikeda, Shunji Nakatake, Kohta Fujiwara, Takashi Tachibana, Noriko Yoshida, Shoji Notomi, Toshio Hisatomi, Shigeo Yoshida, Tatsuro Ishibashi, Koh-Hei Sonoda
PURPOSE: Chronic inflammation is involved in retinitis pigmentosa (RP). We demonstrated previously that intraocular inflammatory levels, as measured by slit-lamp ophthalmoscopy or laser flare photometry, are inversely correlated with central visual function in patients with RP. Here, we investigated the relationship between serum high-sensitivity C-reactive protein (hs-CRP) and visual parameters in RP. METHODS: We studied 58 consecutive typical patients with RP <40 years old and 29 age- and gender-matched controls...
June 21, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28611236/quantification-of-circulating-gdf-11-and-%C3%AE-2-mg-in-aged-patients-with-age-related-impairment-in-cognitive-function
#4
Rungong Yang, Shuhong Fu, Liang Zhao, Bei Zhen, Ling Ye, Xiaolu Niu, Xiaoxia Li, Pumin Zhang, Jie Bai
GDF-11 has been implicated in reverse effects of aging on the central nervous system of humans. β2-MG has been reported to negatively regulate cognitive. However, there is a lot of controversy about the role of GDF-11 and β2-MG in ageing and cognitive regulation. Objective: To examine the involvement of GDF-11 and β2-MG in the aging process and cognitive dysfunction. Methods: A total of 51 healthy subjects and 41 elderly patients with different degrees of age-related cognitive impairment participated in the study...
June 13, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28571126/study-of-glycated-haemoglobin-hba1c-in-non-diabetic-subjects-with-subclinical-hypothyroidism
#5
Mayur Goradhanbhai Makadia, Vishwal Indravadan Patel, Kinjal Prahaladbhai Patel, Aashna Darshanbhai Shah, Kaushik Salubhai Chaudhari, Hitesh Natvarbhai Shah, Haridas Neelakandan Nilayangode
INTRODUCTION: India has the higher prevalence of prediabetes, diabetes and hypothyroidism. Subclinical Hypothyroidism (SH) is more prevalent in the females than in the males. Studies have shown the elevated HbA1c in the non-diabetic hypothyroid patients. SH is defined by normal serum triiodothyronine (T3), thyroxine (T4) levels and serum Thyroid Stimulating Hormone (TSH) level falling between 4.2 to 10 mU/L. AIM: To study the HbA1c level in the non-diabetic SH patients and to compare the HbA1c level with the controls...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28540853/determination-of-serum-albumin-analytical-challenges-a-french-multicenter-study
#6
Adrien Rossary, Françoise Blondé-Cynober, Jean-Philippe Bastard, Marie-Christine Beauvieux, Pascale Beyne, Jocelyne Drai, Christine Lombard, Ingrid Anglard, Christian Aussel, Sophie Claeyssens, Marie-Paule Vasson
Among the biological markers of morbidity and mortality, albumin holds a key place in the range of criteria used by the High Authority for Health (HAS) for the assessment of malnutrition and the coding of information system medicalization program (PMSI). If the principle of quantification methods have not changed in recent years, the dispersion of external evaluations of the quality (EEQ) data shows that the standardization using the certified reference material (CRM) 470 is not optimal. The aim of this multicenter study involving 7 sites, conducted by a working group of the French Society of Clinical Biology (SFBC), was to assess whether the albuminemia values depend on the analytical system used...
June 1, 2017: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/28464873/highly-sensitive-and-accurate-detection-of-c-reactive-protein-by-cdse-zns-quantum-dot-based-fluorescence-linked-immunosorbent-assay
#7
Yanbing Lv, Ruili Wu, Kunrui Feng, Jinjie Li, Qing Mao, Hang Yuan, Huaibin Shen, Xiangdong Chai, Lin Song Li
BACKGROUND: The conventional and widely used enzyme-linked immunosorbent assays (ELISA), due to specificity and high-sensitivity, were suitable in vitro diagnosis. But enzymes are vulnerable to the external conditions, and the complex operation steps limit its application. Semiconductor quantum dots have been successfully used in biological and medical research due to the high photoluminescence and high resistance to photobleaching. In this study, we have developed a novel quantum dot-labeled immunosorbent assay for rapid disease detection of C-reactive protein (CRP)...
May 2, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28461157/cholesterol-delivery-to-the-adrenal-glands-estimated-by-adrenal-venous-sampling-an-in%C3%A2-vivo-model-to-determine-the-contribution-of-circulating-lipoproteins-to-steroidogenesis-in-humans
#8
Edward Buitenwerf, Robin P F Dullaart, Anneke C Muller Kobold, Thera P Links, Wim J Sluiter, Margery A Connelly, Michiel N Kerstens
BACKGROUND: Cholesterol, required for adrenal steroid hormone synthesis, is at least in part derived from circulating lipoproteins. The contribution of high-density lipoproteins (HDL) and low-density lipoproteins (LDL) to adrenal steroidogenesis in humans is unclear. OBJECTIVE: The aim of the study was to determine the extent to which HDL and LDL are taken up by the adrenal glands using samples obtained during adrenal venous sampling (AVS). METHODS: AVS was successfully performed in 23 patients with primary aldosteronism...
May 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28409899/genetic-variation-of-the-%C3%AE-1-antitrypsin-gene-is-associated-with-increased-autoantibody-production-in-rheumatoid-arthritis
#9
Cormac McCarthy, Carl Orr, Laura T Fee, Tomás P Carroll, Danielle M Dunlea, David J L Hunt, Eimear Dunne, Paul O'Connell, Geraldine McCarthy, Dermot Kenny, Ursula Fearon, Douglas J Veale, Emer P Reeves, Noel G McElvaney
OBJECTIVE: To examine the prevalence of α1 -antitrypsin deficiency (AATD) in rheumatoid arthritis (RA), and to determine whether AATD is associated with higher levels of rheumatoid factor (RF), antinuclear antibodies (ANAs), and anti-citrullinated peptide autoantibodies (ACPAs). METHODS: RF, ANAs, and ACPAs were measured by standard immunoturbidimetry, immunofluorescence assay, and enzyme-linked immunosorbent assay, respectively. Characterization of AAT phenotypes was performed by isoelectric focusing and immunofixation...
April 13, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28392828/screening-of-wilson-s-disease-in-a-psychiatric-population-difficulties-and-pitfalls-a-preliminary-study
#10
Caroline Demily, François Parant, David Cheillan, Emmanuel Broussolle, Alice Pavec, Olivier Guillaud, Lioara Restier, Alain Lachaux, Muriel Bost
BACKGROUND: Wilson's disease (WD) is a rare autosomal-recessive, inherited disorder caused by a mutation in the copper-transporting gene ATP7B affecting the liver and nervous system. About 30% of patients with WD may initially present with psychiatric symptoms, and diagnosis can be difficult to establish. The objectives of the present preliminary study were [1] to evaluate the relevance of serum copper (Cu) and ceruloplasmin (Cp) measures in hospitalized patients with psychiatric disorders; and [2] to identify possible mutations in the ATP7B gene in patients with abnormal biological copper profile...
2017: Annals of General Psychiatry
https://www.readbyqxmd.com/read/28386638/effect-of-diet-induced-weight-loss-on-lipoprotein-a-levels-in-obese-individuals-with-and-without-type-2-diabetes
#11
Kirsten A Berk, Reyhana Yahya, Adrie J M Verhoeven, Jeanette Touw, Frank P Leijten, Elisabeth F van Rossum, Vincent L Wester, Mirjam A Lips, Hanno Pijl, Reinier Timman, Gertraud Erhart, Florian Kronenberg, Jeanine E Roeters van Lennep, Eric J G Sijbrands, Monique T Mulder
AIMS/HYPOTHESIS: Elevated levels of lipoprotein(a) [Lp(a)] are an independent risk factor for cardiovascular disease (CVD), particularly in individuals with type 2 diabetes. Although weight loss improves conventional risk factors for CVD in type 2 diabetes, the effects on Lp(a) are unknown and may influence the long-term outcome of CVD after diet-induced weight loss. The aim of this clinical study was to determine the effect of diet-induced weight loss on Lp(a) levels in obese individuals with type 2 diabetes...
June 2017: Diabetologia
https://www.readbyqxmd.com/read/28377336/immunoanalytical-characteristics-of-c-reactive-protein-and-high-sensitivity-c-reactive-protein
#12
Mariame Moutachakkir, Asma Lamrani Hanchi, Azzedine Baraou, Abderrahman Boukhira, Saliha Chellak
C-reactive protein (CRP) is a polypeptide molecule belonging to the family of pentraxins. It has a molecular mass of 120,000 daltons and consists of five identical sub-units that contain each 206 amino acids. CRP is synthesized primarily by the liver in response to certain pro-inflammatory cytokines. It plays an important role in innate immunity, opsonization by its properties, complement activation and immunoglobulins receptor binding. CRP is a protein of the acute systemic inflammation and is, therefore, a prime marker of inflammation...
April 1, 2017: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/28134964/association-of-plasma-complement-c3-levels-with-primary-angle-closure-glaucoma-in-older-women
#13
Shengjie Li, Yuhong Chen, Mingxi Shao, Li Tang, Xinghuai Sun, Wenjun Cao
Purpose: The plasma complement component (C)3 concentration and clinical characteristics of primary angle-closure glaucoma (PACG) subjects were analyzed to evaluate whether C3 levels were correlated with PACG severity. Methods: Peripheral blood samples from subjects with PACG (n = 237) and normal controls (n = 158) were collected. The plasma levels of C3 were measured by immunoturbidimetry. The assessments of intraocular pressure; vertical cup/disc ratio (VCDR); central corneal thickness; axial length; anterior chamber depth; visual field-derived mean deviation; and mean sensitivity were performed by glaucoma specialists...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28038785/reduced-thrombin-activatable-fibrinolysis-inhibitor-and-enhanced-proinflammatory-cytokines-in-acute-coronary-syndrome
#14
H Pang, C Zhang, F Liu, X Gong, X Jin, C Su
OBJECTIVE: A study was made of the changes in the serum levels of thrombin activatable fibrinolysis inhibitor (TAFI), proinflammatory cytokines and acute phase proteins in the acute stage of acute coronary syndrome (ACS), in order to explore the possibility of using TAFI as a biomarker for ACS risk assessment. METHODS: A total of 211 patients with ACS were enrolled, and healthy subjects were used as controls. Blood samples were taken within 24h after admission. Serum TAFI levels were determined by immunoturbidimetry...
December 27, 2016: Medicina Intensiva
https://www.readbyqxmd.com/read/27982282/effects-of-perinatal-exposure-to-nonylphenol-on-delivery-outcomes-of-pregnant-rats-and-inflammatory-hepatic-injury-in-newborn-rats
#15
J Yu, Y Luo, X F Yang, M X Yang, J Yang, X S Yang, J Zhou, F Gao, L T He, J Xu
The current study aimed to investigate the effects of perinatal exposure to nonylphenol (NP) on delivery outcome of pregnant rats and subsequent inflammatory hepatic injury in newborn rats. The pregnant rats were divided into 2 groups: control group (corn oil) and NP exposure group. Thirty-four pregnant rats were administered NP or corn oil by gavage from the sixth day of pregnancy to 21 days postpartum, with blood samples collected at 12 and 21 days of pregnancy and 60 days after delivery. The NP concentration was measured by HPLC, with chemiluminescence used for detection of estrogen and progesterone levels...
December 8, 2016: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/27868236/national-continuous-surveys-on-internal-quality-control-for-hba1c-in-306-clinical-laboratories-of-china-from-2012-to-2016-continual-improvement
#16
Tingting Li, Wei Wang, Haijian Zhao, Falin He, Kun Zhong, Shuai Yuan, Zhiguo Wang
BACKGROUND: This study aimed to evaluate whether the quality performance of clinical laboratories in China has been greatly improved and whether Internal Quality Control (IQC) practice of HbA1c has also been changed since National Center for Clinical Laboratories (NCCL) of China organized laboratories to report IQC data for HbA1c in 2012. METHODS: Internal Quality Control information of 306 External Quality Assessment (EQA) participant laboratories which kept reporting IQC data in February from 2012 to 2016 were collected by Web-based EQA system...
November 21, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27862036/association-of-%C3%AE-1-adrenergic-m2-muscarinic-receptor-autoantibody-with-occurrence-and-development-of-nonvalvular-atrial-fibrillation
#17
Bing Hu, Yanxiang Sun, Sha Li, Jie Sun, Tong Liu, Zidi Wu, L I Feng
BACKGROUND: Atrial fibrillation (AF) is the most common sustained arrhythmia and is independently associated with increased risk of stroke and death. Although the exact mechanisms of AF are not completely elucidated, a large number of evidences demonstrate that autoimmunity may play an important role in the initiation, the progression, and the maintenance of AF. In this study, we aimed to compare anti-β1-adrenergic receptor autoantibody (anti-β1-R) and anti-M2-muscarinic receptor autoantibody (anti-M2-R) levels between nonvalvular AF patients and healthy control subjects...
December 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27831647/the-clinical-significance-of-level-changes-of-hs-crp-il-10-and-tnf-for-patients-with-ms-during-active-and-relieving-period
#18
A-L Ji, Z-H Liu, W-W Chen, W-J Huang
OBJECTIVE: To investigate the clinical significance of the change of the level of hs-CRP, interleukin-10 (IL-10) and tumor necrosis factors (TNF-α) for patients with multiple sclerosis (MS) during the active and the relieving period. PATIENTS AND METHODS: 36 patients with MS during the active stage and the relieving stage after therapy (experimental group) were compared with 10 healthy people at the relieving period, considered as control group. Immunoturbidimetry was used to examine levels of hs-CRP while the level of IL-10 and TNF-a were tested by enzyme-linked immunosorbent assay (ELISA)...
October 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27770201/histopathological-and-immunological-changes-during-the-acute-and-recovery-phase-in-henoch-sch%C3%A3-nlein-purpura-rabbit-model
#19
Yanhong Li, Xiaolong Sui, Hua Zhu, Yanfeng Xu, Lan Huang, Yuhuan Xu, Yunlin Han, Xiaochun Feng, Chuan Qin
Henoch-Schönlein purpura (HSP) is a systemic vasculitis mediated by autologous immune complex. Animal models of HSP are scarce. Here, we describe the characteristics of HSP rabbit model in the acute and recovery phase. First, we constructed the HSP rabbit models, and then assessed immunologic indicators of models by enzyme-linked immunosorbent assay and immunoturbidimetry. Histomorphological characteristics were analyzed by haematoxylin-eosin, immunofluorescence and special staining. In the acute stage (24 h) after antigen challenge, the model group rabbits featured skin ecchymosis and abnormal laboratory examination results...
January 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/27743141/double-positivity-of-the-igg-isotype-of-both-anticardiolipin-and-anti-%C3%AE-2gpi-antibodies-is-associated-with-the-highest-number-of-vascular-impairment-parameters-in-patients-with-primary-antiphospholipid-syndrome-preliminary-data
#20
Mirjana Bećarević, Duško Mirković, Svetlana Ignjatović
Although numerous studies investigated the association between homocysteine (Hcy), tumor necrosis factor alpha (TNF-α), C-reactive protein (CRP) and apolipoproteins (apos) with thrombosis and/or recurrent pregnancy losses, studies that analyzed the abovementioned parameters and multiple positivity of antiphospholipid antibodies (aPL Abs) in patients with primary antiphospholipid syndrome (PAPS) are lacking. Therefore, the aim of this study was to analyze the presence of various combinations of the abovementioned parameters and their associations with clinical and/or serological features of PAPS...
December 2016: Clinical Rheumatology
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