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Serology

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https://www.readbyqxmd.com/read/29161459/ageing-impairs-parasite-specific-antibody-responses-in-cystic-echinococcosis
#1
Gustavo Mourglia-Ettlin, Sebastián Miles, Ana Hernández, Sylvia Dematteis
Humoral immunity wanes during healthy ageing, increasing susceptibility to infections in the elderly. In this sense, information about parasite infections and human immunosenescence is scarce. Cystic echinococcosis (CE) is an infectious disease caused by the larval stage of the cestode parasite Echinococcus granulosus, whose prevalence in humans shows an increase with host age. Susceptibility to human CE has been associated with humoral immunity to some extent; and therefore, we have here analyzed the influence of host age on the serological profile of young, middle-aged, and aged patients...
November 21, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/29161078/obesity-impairs-the-adaptive-immune-response-to-influenza-virus
#2
William D Green, Melinda A Beck
Influenza, a highly contagious respiratory tract infection, affects millions of adults and children each year. Several high-risk populations include children, the elderly, the immunocompromised, and recently the obese. Given the dramatic rise in obesity over the past few decades, this increased risk for influenza infection poses a serious public health threat because nearly 500 million adults and children worldwide are classified as obese. Obesity impairs the immune response to influenza and influenza vaccination through alterations of the cellular immune system...
November 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29160912/low-sensitivity-and-frequent-cross-reactions-in-commercially-available-antibody-detection-elisa-assays-for-taenia-solium-cysticercosis
#3
Hector H Garcia, Yesenia Castillo, Isidro Gonzales, Javier A Bustos, Herbert Saavedra, Louis Jacob, Oscar H Del Brutto, Patricia P Wilkins, Armando E Gonzalez, Robert H Gilman
OBJECTIVE: To evaluate the diagnostic performance of two commercially available ELISA kits, Novalisa(®) and Ridascreen(®) , for the detection of antibodies to Taenia solium, compared to serological diagnosis of neurocysticercosis (NCC) by LLGP-EITB (electro immunotransfer blot assay using lentil-lectin purified glycoprotein antigens). METHODS: Archive serum samples from patients with viable NCC (n=45) or resolved, calcified NCC (n=45), as well as sera from patients with other cestode parasites (hymenolepiasis, n=45, and cystic hydatid disease, n=45), were evaluated for cysticercosis antibody detection using two ELISA kits, Novalisa(®) and Ridascreen(®) ...
November 21, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/29160792/cross-sectional-serological-survey-for-leptospira-spp-in-beef-and-dairy-cattle-in-two-districts-in-uganda
#4
Anou Dreyfus, Terence Odoch, Lordrick Alinaitwe, Sabrina Rodriguez-Campos, Amanuel Tsegay, Valentine Jaquier, Clovice Kankya
Seroprevalence of Leptospira spp. in cattle is unknown in Uganda. The aim of this study was to estimate the seroprevalence of L. interrogans Icterohaemorrhagiae, Pomona, L. kirschneri Butembo, Grippotyphosa, L. borgpetersenii Nigeria, Hardjo, Wolfii, and Kenya and an overall seroprevalence in cattle from Kole and Mbale districts. Two hundred-seventy five bovine sera from 130 small holder farms from Kole (n = 159) and Mbale (n = 116), collected between January and July 2015, were tested for antibodies against eight Leptospira strains by Microscopic Agglutination Test...
November 21, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29160648/-infection-by-the-epstein-barr-virus-between-the-years-2006-2015-in-the-health-area-of-santiago-de-compostela-relationship-with-age-and-sex
#5
R Trastoy Pena, J J Costa Alcalde, J Rodríguez Calviño, D Navarro de la Cruz, G Barbeito Castiñeiras, A Aguilera Guirao
OBJECTIVE: In Spain, the age and sex to which the primary infection by EBV is produced is poorly studied. The objective of this work is to know its relation with the presence of the primary infection by EBV between the years 2006 and 2015 in our health area. METHODS: From the Santiago de Compostela health area between 2006 and 2015, 578 patients with serological patterns of EBV primoinfection were selected. This patients presented serological results of IgM-VCA positive, IgG-VCA positive and EBNA negative...
November 21, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/29160384/current-use-and-acceptability-of-novel-diagnostic-tests-for-active-tuberculosis-a-worldwide-survey
#6
Massimo Amicosante, Lia D'Ambrosio, Marcela Munoz, Fernanda Carvalho de Queiroz Mello, Marc Tebruegge, Novel Njweipi Chegou, Fouad Seghrouchni, Rosella Centis, Delia Goletti, Graham Bothamley, Giovanni Battista Migliori
OBJECTIVE: To determine the current use and potential acceptance (by tuberculosis experts worldwide) of novel rapid tests for the diagnosis of tuberculosis that are in line with World Health Organization target product profiles. METHODS: A multilingual survey was disseminated online between July and November of 2016. RESULTS: A total of 723 individuals from 114 countries responded to the survey. Smear microscopy was the most commonly used rapid tuberculosis test (available to 90...
September 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29160216/serological-survey-of-australian-native-reptiles-for-exposure-to-ranavirus
#7
E Ariel, E Elliott, J I Meddings, J Miller, M B Santos, L Owens
Ranaviruses have been isolated from many ectothermic vertebrates, and serological surveys of both amphibians and reptiles have shown the presence of ranaviral antibodies in a proportion of these populations. An enzyme-linked immunosorbent assay (ELISA) was developed to measure serum antibodies against ranavirus in Australian reptiles. The ELISA was validated with serum from challenge trials with Bohle iridovirus (BIV) in 6 reptilian species. A preliminary sero-survey of northern Queensland riparian reptile fauna (saw-shelled turtles Myuchelys latisternum, Krefft's river turtles Emydura macquarii krefftii, freshwater crocodiles Crocodylus johnstoni, as well as the snakes Boiga irregularis, Dendrelaphis punctulatus, Tropidonophis mairii, Morelia spilota, Liasis childreni and L...
November 21, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29159696/reflex-testing-of-speckled-cytoplasmic-patterns-observed-in-routine-ana-hep-2-indirect-immunofluorescence-with-a-multiplex-anti-synthetase-dot-blot-assay-a-multicentric-pilot-study
#8
Maria Infantino, Boaz Palterer, Roberta Biagiotti, Fabio Almerigogna, Maurizio Benucci, Arianna Damiani, Valentina Grossi, Annalisa Azzurri, Patrizia Casprini, Giovanni Bacci, Maria Grazia Giudizi, Mariangela Manfredi
Immunofluorescence on HEp2-cells is the standard diagnostic assay for the detection of anti-nuclear antibodies (ANA). Cytoplasmic speckled patterns are a common finding, and are associated with various antibodies, including anti-synthetase antibodies. However, classic ENA testing generally identifies only anti-Jo-1. Moreover, anti-synthetase syndrome is increasingly recognized as a pleomorphic entity, possibly presenting as isolated arthritis or interstitial lung disease. Sera referred for routine ANA testing were selected on the basis of the presence of a fine dense speckled cytoplasmic pattern (254 samples) and compared to control sera with negative cytoplasm (239 samples)...
November 21, 2017: Immunologic Research
https://www.readbyqxmd.com/read/29159681/advanced-strategies-for-eliminating-the-cccdna-of-hbv
#9
REVIEW
Jingwu Dong, Jie Ying, Xiaoyan Qiu, Yu Lu, Miaomiao Zhang
Persistent hepatitis B virus (HBV) infection of hepatocytes is associated with a covalently closed circular DNA (cccDNA) episome. Although serologic hepatitis B surface antigen tests are negative, the presence of cccDNA is obviously increased in HBeAg-positive patients compared with that in HBeAg-negative patients, inactive carriers and patients. Moreover, trace cccDNA levels can also be found in the liver cells of patients with resolved hepatitis B infections. Therefore, clearance of cccDNA in hepatocytes could be an effective cure for HBV...
November 20, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29159319/co-circulation-of-crimean-congo-hemorrhagic-fever-virus-strains-asia-1-and-2-between-the-border-of-iran-and-pakistan
#10
Nariman Shahhosseini, Ahmad Jafarbekloo, Zakkyeh Telmadarraiy, Sadegh Chinikar, Ali Haeri, Norbert Nowotny, Martin H Groschup, Anthony R Fooks, Faezeh Faghihi
Crimean-Congo Hemorrhagic Fever (CCHF) is a tick-borne viral disease that is transmitted by numerous species of ticks, which serve both as a reservoir and vector of CCHF virus (CCHFV). Molecular and serological tests were undertaken on hard ticks (Ixodidae spp.) and samples from livestock were collected in 2015 from Chabahar County in Southeast Iran. Using RT-PCR, the ticks were tested for the presence of CCHFV. In addition, seven livestock were serologically tested for the presence of IgG antibodies using an ELISA test...
November 2017: Heliyon
https://www.readbyqxmd.com/read/29159070/primary-cytomegalovirus-infection-in-immunocompetent-adults-in-the-united-states-a-case-series
#11
Nathanial Nolan, Umme-Aiman Halai, Hariharan Regunath, LPatrick Smith, Christian Rojas-Moreno, William Salzer
Primary Cytomegalovirus (CMV) infection is often not suspected as a cause of fever of unknown origin (FUO) in immune-competent adults. We present a case-series of symptomatic primary CMV infection in immunocompetent adults presenting as fever of unknown origin (FUO). All patients with CMV serology tested between November 2008 and June 2016 underwent chart review. Cases were defined as those between 18 and 65 years of age with documented fever and elevated serum anti-CMV IgM. Exclusion criteria were organ specific CMV disease, positive serum anti-EBV IgM, or presence of any immunocompromising condition...
2017: IDCases
https://www.readbyqxmd.com/read/29159027/a-case-of-paracoccidioidomycosis-due-to-paracoccidioides-lutzii-presenting-sarcoid-like-form
#12
Luiza Sarmento Tatagiba, Luana Bridi Pivatto, Álvaro A Faccini-Martínez, Paulo Mendes Peçanha, Tânia Regina Grão Velloso, Sarah Santos Gonçalves, Anderson Messias Rodrigues, Zoilo Pires Camargo, Aloísio Falqueto
Paracoccidioidomycosis (PCM) is a fungal disease caused by Paracoccidioides spp., which can cause a systemic granulomatous infection with tegumentary and visceral involvement. Sarcoid-like skin lesions are uncommon and can be misdiagnosed due to similarities with other granulomatous diseases. We report a case of a women presenting with erythematous infiltrated plaques on her face that was treated for leprosy and rosacea with no response and was later diagnosed with PCM, presenting positive serology for Paracoccidioides lutzii...
March 2018: Medical Mycology Case Reports
https://www.readbyqxmd.com/read/29158907/chikungunya-outbreak-in-delhi-india-2016-report-on-coinfection-status-and-comorbid-conditions-in-patients
#13
N Kaur, J Jain, A Kumar, M Narang, M K Zakaria, A Marcello, D Kumar, R Gaind, S Sunil
Chikungunya fever is a major public health issue in India affecting billions. After 2010, the infection was in a decline until in 2016, when a massive outbreak affected the country. In this report, we present serologic and molecular investigations of 600 patient samples for chikungunya and dengue viruses along with clinical and comorbidity features. We recruited 600 patients during this outbreak and evaluated them for chikungunya and dengue virus antibodies and virus RNA through IgM, NS1 antigen and quantitative real-time PCR (qPCR)...
November 2017: New Microbes and New Infections
https://www.readbyqxmd.com/read/29157957/selection-of-vaccine-strains-for-serotype-o-foot-and-mouth-disease-viruses-2007-2012-circulating-in-southeast-asia-east-asia-and-far-east
#14
Mana Mahapatra, Sasmita Upadhyaya, Sharie Aviso, Aravindh Babu, Geoff Hutchings, Satya Parida
Foot-and-mouth disease (FMD) is endemic in Southeast Asia (SEA) and East Asia with circulation of multiple serotypes and multiple genotypes within each serotype of the virus. Although countries like Japan and South Korea in the Far East were free of FMD, in 2010 FMD serotype O (O/Mya-98) outbreaks were recorded and since then South Korea has experienced several FMD outbreaks despite regular vaccination. In this study a total of 85 serotype O FMD viruses (FMDV) isolated from 2007 to 2012 from SEA, East Asia and Far East were characterized by virus neutralisation tests using antisera to four existing (O/HKN/6/83, O/IND/R2/75, O/SKR/2010 and O/PanAsia-2) and one putative (O/MYA/2009) vaccine strains, and by full capsid sequencing...
November 17, 2017: Vaccine
https://www.readbyqxmd.com/read/29156857/a-study-of-the-chikungunya-virus-in-humans-in-turkey
#15
Tuğba Atalay, Sedat Kaygusuz, Ahmet Kürşat Azkur
Background/aim: The chikungunya virus (CHIKV) is a mosquito-borne disease and has recently been causing explosive outbreaks. The CHIKV has spread throughout all continents. Although the first chikungunya case imported from India to Turkey was reported in 2012, there is no detailed epidemiologic study in Turkey yet. The aim of this study was to investigate the seroprevalence of the CHIKV in Turkey. Materials and methods: ELISA was used to screen 500 random serum samples of healthy people collected from Kırıkkale, which is located in central Anatolia in Turkey...
August 23, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29156749/high-uric-acid-ua-downregulates-bone-alkaline-phosphatase-balp-expression-through-inhibition-of-its-promoter-activity
#16
Zhi-Qi Wu, Xiao-Ting Chen, Yan-Yan Xu, Ming-Jie Tian, Hai-Yan Chen, Guo-Ping Zhou, Hua-Guo Xu
Bone metastases often occur in prostate cancers, lung cancers and breast cancers. Bone alkaline phosphatase (BALP) is one of the most commonly used serological markers for clinical evaluation of bone metabolism. Here, we reported that high concentrations of uric acid (UA) caused decrease of BALP levels and revealed that the effect of high concentrations of UA on the BALP expression was through inhibition of its promoter activity. Our results suggested physicians to think about serum UA status of patients with advanced cancer to avoid misdiagnosis when BALP was used to diagnose or assess the extent of bone metastases...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156547/knowledge-and-practices-of-toxoplasmosis-among-clinical-laboratory-professionals-a-cross-sectional-study-in-durango-mexico
#17
Cosme Alvarado-Esquivel, Luis Francisco Sánchez-Anguiano, Luis Omar Berumen-Segovia, Jesús Hernández-Tinoco, Yazmin Del Rosario Rico-Almochantaf, Alfredo Cisneros-Camacho, Jorge Arturo Cisneros-Martínez
Background: The aim of this study was to determine the level of knowledge and practices about toxoplasmosis in a sample of clinical laboratory professionals in Mexico. Methods: 192 clinical laboratory professionals were surveyed. They were asked about (1) Toxoplasma gondii; (2) clinical manifestations, diagnosis, treatment, and epidemiology of toxoplasmosis; and (3) their practices with respect to toxoplasmosis. Results: The range of animals infected by T. gondii was known by 44.8% of participants. Clinical aspects of toxoplasmosis were known by up to 44...
November 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29156046/toward-a-cure-for-hepatitis-b-virus-infection-combination-therapy-involving-viral-suppression-and-immune-modulation-and-long-term-outcome
#18
Di Wu, Qin Ning
Chronic hepatitis B virus (HBV) infection remains a major global health burden. Currently, the approved therapeutic regimens include nucleos(t)ide analogues (NAs) and either interferon or pegylated interferon. NA therapy is generally safe and well tolerated, but the rate of posttreatment virologic relapse is high, making NA treatment a lifetime commitment. The benefits of pegylated interferon treatment include a finite duration, more-durable response and absence of viral resistance. However, sustained response to interferon alone is achieved only in a minority of patients, and side effects are common, which limit its clinical use...
November 16, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29155650/assessment-of-national-public-health-and-reference-laboratory-accra-ghana-within-framework-of-global-health-security
#19
Adaeze Ogee-Nwankwo, David Opare, Gifty Boateng, Mawuli Nyaku, Lia M Haynes, S Arunmozhi Balajee, Laura Conklin, Joseph P Icenogle, Paul A Rota, Diane Waku-Kouomou
The Second Year of Life project of the Global Health Security Agenda aims to improve immunization systems and strengthen measles and rubella surveillance, including building laboratory capacity. A new laboratory assessment tool was developed by the Centers for Disease Control and Prevention to assess the national laboratory in Ghana to improve molecular surveillance for measles and rubella. Results for the tool showed that the laboratory is well organized, has a good capacity for handling specimens, has a good biosafety system, and is proficient for diagnosis of measles and rubella by serologic analysis...
December 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29154390/circadian-profiling-reveals-higher-histamine-plasma-levels-and-lower-diamine-oxidase-serum-activities-in-24-of-patients-with-suspected-histamine-intolerance-compared-to-food-allergy-and-controls
#20
Theresa C Pinzer, Esther Tietz, Elisabeth Waldmann, Monic Schink, Markus F Neurath, Yurdagül Zopf
BACKGROUND: Histamine intolerance is thought to trigger manifold clinical symptoms after ingesting histamine-rich food due to reduced activity of diamine oxidase (DAO). No study has hitherto systematically assessed daily fluctuations of histamine levels and DAO activities in symptomatic patients. The aim of the study was to investigate the presence of histamine intolerance, to therefore establish day profiles of histamine levels and DAO activities, and to compare the results between patients with suspected histamine intolerance, food allergy and healthy controls...
November 20, 2017: Allergy
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