keyword
MENU ▼
Read by QxMD icon Read
search

Pcr gbs

keyword
https://www.readbyqxmd.com/read/28923133/genetic-evidence-for-a-novel-variant-of-the-pilus-island-1-backbone-protein-in-group-b-streptococcus
#1
Sarah Teatero, Alefiya Neemuchwala, Kunlin Yang, Janice Gomes, Taryn B T Athey, Irene Martin, Walter Demczuk, Allison McGeer, Nahuel Fittipaldi
PURPOSE: Pili contribute significantly to the pathogenesis of infection of group B Streptococcus (GBS) by facilitating adhesion and invasion of host cells. GBS pilin subunits (the backbone pilin protein, BP, and the ancillary pilin proteins, AP) as well as the specific enzymes required for pilus assembly are encoded by genes located in two separate genomic regions, known as pilus island 1 (PI-1) and PI-2. Our aim was to characterize the pilus profile of a collection of GBS isolates from metropolitan Toronto, Canada...
September 19, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28920845/modified-use-of-real-time-pcr-detection-of-group-b-streptococcus-in-pregnancy
#2
Ali A Rabaan, Justin V Saunar, Ali M Bazzi, Joan L Soriano
The CDC recommends antenatal screening of vaginal/rectal samples for Streptococcus agalactiae at 35-37 weeks' gestation, with intra-partum antibiotic prophylaxis for positive cases. We tested a modified use of the Cepheid Xpert GBS real-time PCR kit on enrichment cultures from 554 vaginal/rectal swabs compared to the current subculturing gold standard method. Swabs were inoculated on polymyxin nalidixic acid agar plates, and Todd-Hewitt enrichment broth cultures were examined daily for growth. Todd-Hewitt broth culture was also used for Xpert GBS...
September 18, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28916318/matrix-metalloproteinases-2-and-9-in-campylobacter-jejuni-induced-paralytic-neuropathy-resembling-guillain-barr%C3%A3-syndrome-in-chickens
#3
Kishan Kumar Nyati, Kashi Nath Prasad, Vinita Agrawal, Nuzhat Husain
Inflammation in Guillain-Barré syndrome (GBS) is manifested by changes in matrix metalloproteinase (MMP) and pro-inflammatory cytokine expression. We investigated the expression of MMP-2, -9 and TNF-α and correlated it with pathological changes in sciatic nerve tissue from Campylobacter jejuni-induced chicken model for GBS. Campylobacter jejuni and placebo were fed to chickens and assessed for disease symptoms. Sciatic nerves were examined by histopathology and immunohistochemistry. Expressions of MMPs and TNF-α, were determined by real-time PCR, and activities of MMPs by zymography...
September 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28870726/analysis-of-the-prophages-carried-by-human-infecting-isolates-provides-new-insight-into-the-evolution-of-group-b-streptococcus-species
#4
Nathalie van der Mee-Marquet, Seydina M Diene, Laurie Barbera, Luka Courtier-Martinez, Louise Lafont, Alice Ouachée, Anne-Sophie Valentin, Sandra Dos Santos, Roland Quentin, Patrice François
OBJECTIVES: Group B Streptococcus (GBS) emerged in the 1970s as a major cause of neonatal infections, and has been increasingly associated with infections in adults since the 1990s. Prophages have been suspected to have driven these epidemiological trends. We have characterized the prophages harboured by 275 human GBS isolates belonging to the major lineages. METHODS: We applied whole genome sequencing (WGS) to 14 isolates representative of the diversity within GBS species, located and identified their prophages...
September 1, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28817995/intrapartum-test-for-detection-of-group-b-streptococcus-colonization-during-labor
#5
Elena Picchiassi, Giuliana Coata, Giulia Babucci, Irene Giardina, Valentina Summa, Federica Tarquini, Michela Centra, Vittorio Bini, Benito Cappuccini, Gian Carlo Di Renzo
PURPOSE: To evaluate the potential improvement of introducing an intrapartum test for the detection of Group B Streptococcus (GBS) during labor and to estimate its cost-effectiveness versus antepartum GBS screening culture. MATERIALS AND METHODS: Three hundred thirteen women at beginning of labor, with unknown GBS status or with antepartum GBS screening culture were enrolled. A vaginal-rectal specimen was collected from each woman for GBS detection by real time PCR...
August 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28806562/zika-virus-induced-neurological-critical-illness-in-latin-america-severe-guillain-barre-syndrome-and-encephalitis
#6
Ugarte Ubiergo Sebastián, Arenas Villamizar Angel Ricardo, Bruno C Alvarez, Angela Cubides, Angélica F Luna, Max Arroyo-Parejo, Cayri E Acuña, Agamenón V Quintero, Orlando Ch Villareal, Oscar S Pinillos, Elías Vieda, Manuel Bello, Susana Peña, Carmelo Dueñas-Castell, Gloria M V Rodriguez, Jorge L M Ranero, Rosa L M López, Sandra G Olaya, José C Vergara, Ana Tandazo, Juan P S Ospina, Igor M Leyton Soto, R A Fowler, John C Marshall
Zika virus (ZIKAV) is classically described as causing minor symptoms in adult patients, however neurologic complications have been recognized. The recent outbreak in Central and South America has resulted in serious illness in some adult patients. We report adult patients in Latin America diagnosed with ZIKAV infection admitted to Intensive Care Units (ICUs). METHODS: Multicenter, prospective case series of adult patients with laboratory diagnosis of ZIKAV in 16 ICUs in 8 countries. RESULTS: Between December 1st 2015 and April 2nd 2016, 16 ICUs in 8 countries enrolled 49 critically ill patients with diagnosis of ZIKAV infection...
August 9, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28798738/zika-virus-an-emerging-worldwide-threat
#7
Irfan A Rather, Jameel B Lone, Vivek K Bajpai, Woon K Paek, Jeongheui Lim
ZIKA virus (ZIKV) poses a severe threat to the world. Recent outbreaks of ZIKV after 2007 along with its quick transmission have made this virus a matter of international concern. The virus shows symptoms that are similar to those caused in the wake of dengue virus (DENV) and other flaviviruses, which makes it difficult to discern the viral infection. Diagnosis is further complicated as the virus cross-reacts with antibodies of other viruses. Currently, molecular diagnosis of the virus is being performed by RT-PCR and IgM-captured enzyme-linked immunosorbent assay (MAC-ELISA)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28779876/detection-of-streptococcus-agalactiae-by-immunochromatography-with-group-b-streptococcus-specific-surface-immunogenic-protein-in-pregnant-women
#8
Yoko Takayama, Hidehito Matsui, Yuzuru Adachi, Shin Nihonyanagi, Tatsuhiko Wada, Junko Mochizuki, Nobuya Unno, Hideaki Hanaki
BACKGROUND: Infection with Streptococcus agalactiae (Group B streptococcus: GBS) is a significant cause of morbidity and mortality in neonates. Screening for GBS is mainly done by culture-based methods, but a reliable result may take several days to obtain and culture is difficult to perform at institutions without a laboratory. We evaluated an immunochromatography method for rapid detection of GBS-specific surface immunogenic protein (Sip) using anti-Sip monoclonal antibodies. MATERIALS AND METHODS: A total of 377 cervical and vaginal swabs collected during weeks 35-37 of gestation were inoculated into GBS medium F and incubated...
October 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28776338/epidemiology-and-clinical-characteristics-of-zika-virus-infections-imported-into-korea-from-march-to-october-2016
#9
Doran Yoon, Seung Hwan Shin, Hee Chang Jang, Eu Suk Kim, Eun Hee Song, Song Mi Moon, So Youn Shin, Pyeong Gyun Choe, Jung Joon Sung, Eun Hwa Choi, Myoung Don Oh, Youngmee Jee, Nam Joong Kim
Zika is a re-emerging, mosquito-borne viral infection, which has been recently shown to cause microcephaly and Guillain-Barré syndrome. Since 2015 the number of infected patients has increased significantly in South America. The purpose of this study was to identify the epidemiologic and clinical characteristics of patients with Zika virus (ZIKV) infections in Korea. Patients who had visited areas of risk and tested positive in the ZIKV reverse transcriptase polymerase chain reaction (RT-PCR) in blood, urine, or saliva specimens were included...
September 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28764569/screening-for-group-b-streptococcus-gbs-at-labour-onset-using-pcr-accuracy-and-potential-impact-a-pilot-study
#10
Sandhya Ramesh Babu, Rachel McDermott, Irum Farooq, David Le Blanc, Wendy Ferguson, Naomi McCallion, Richard Drew, Maeve Eogan
This pilot study assessed the diagnostic accuracy and potential impact of a rapid PCR-based screening test for the detection of group B Streptococcus (GBS) at the onset of labour for the purpose of optimising intrapartum antibiotic prophylaxis (IAP). Vaginal and rectal swabs from a convenience sample of 158 women were analysed by conventional broth-enriched culture and a rapid PCR test. Overall, GBS carriage was 18.98% by culture and 19.62% by PCR. PCR for the detection of GBS had a sensitivity of 93.1%, specificity of 96...
August 1, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28760136/development-of-a-high-density-linkage-map-and-mapping-of-the-three-pistil-gene-pis1-in-wheat-using-gbs-markers
#11
Zaijun Yang, Zhenyong Chen, Zhengsong Peng, Yan Yu, Mingli Liao, Shuhong Wei
BACKGROUND: The wheat mutant line three-pistil (TP) exhibits three pistils per floret. As TP normally has two or three seeds in each of the florets on the same spike, there is the possibility of increasing the number of grains per spike. Therefore, TP is a highly valuable mutant for breeding and for the study of floral development in wheat. To map the three-pistil gene (Pis1), genotyping-by-sequencing single-nucleotide polymorphism (GBS-SNP) data from an F2 mapping population (CM28 × CM28TP) was used to construct a genetic map that is of significant value...
July 31, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28728607/zika-virus-transmission-to-mouse-ear-by-mosquito-bite-a-laboratory-model-that-replicates-the-natural-transmission-process
#12
Nagila Francinete Costa Secundino, Barbara Aparecida Chaves, Alessandra Silva Orfano, Karine Renata Dias Silveira, Nilton Barnabe Rodrigues, Thais Bonifácio Campolina, Rafael Nacif-Pimenta, Luiz Eduardo Martinez Villegas, Breno Melo Silva, Marcus Vinícius Guimarães Lacerda, Douglas Eric Norris, Paulo Filemon Paolucci Pimenta
BACKGROUND: Zika disease has transformed into a serious global health problem due to the rapid spread of the arbovirus and alarming severity including congenital complications, microcephaly and Guillain-Barré syndrome. Zika virus (ZIKV) is primarily transmitted to humans through the bite of an infective mosquito, with Aedes aegypti being the main vector. METHODS: We successfully developed a ZIKV experimental transmission model by single infectious Ae. aegypti bite to a laboratory mouse using circulating Brazilian strains of both arbovirus and vector...
July 20, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28719243/genotyping-by-sequencing-based-genetic-analysis-of-african-rice-cultivars-and-association-mapping-of-blast-resistance-genes-against-magnaporthe-oryzae-populations-in-africa
#13
Emmanuel M Mgonja, Chan Ho Park, Houxiang Kang, Elias G Balimponya, Stephen Opiyo, Maria Bellizzi, Samuel K Mutiga, Felix Rotich, Veena Devi Ganeshan, Robert Mabagala, Clay Sneller, Jim Correll, Bo Zhou, Nicholas J Talbot, Thomas K Mitchell, Guo-Liang Wang
Understanding the genetic diversity of rice germplasm is important for the sustainable use of genetic materials in rice breeding and production. Africa is rich in rice genetic resources that can be utilized to boost rice productivity on the continent. A major constraint to rice production in Africa is rice blast, caused by the hemibiotrophic fungal pathogen Magnaporthe oryzae. In this report, we present the results of a genotyping-by-sequencing (GBS)-based diversity analysis of 190 African rice cultivars and an association mapping of blast resistance (R) genes and quantitative trait loci (QTLs)...
September 2017: Phytopathology
https://www.readbyqxmd.com/read/28716913/antibody-based-assay-discriminates-zika-virus-infection-from-other-flaviviruses
#14
Angel Balmaseda, Karin Stettler, Raquel Medialdea-Carrera, Damaris Collado, Xia Jin, José Victor Zambrana, Stefano Jaconi, Elisabetta Cameroni, Saira Saborio, Francesca Rovida, Elena Percivalle, Samreen Ijaz, Steve Dicks, Ines Ushiro-Lumb, Luisa Barzon, Patricia Siqueira, David W G Brown, Fausto Baldanti, Richard Tedder, Maria Zambon, A M Bispo de Filippis, Eva Harris, Davide Corti
Zika virus (ZIKV) is a mosquito-borne flavivirus that emerged recently as a global health threat, causing a pandemic in the Americas. ZIKV infection mostly causes mild disease, but is linked to devastating congenital birth defects and Guillain-Barré syndrome in adults. The high level of cross-reactivity among flaviviruses and their cocirculation has complicated serological approaches to differentially detect ZIKV and dengue virus (DENV) infections, accentuating the urgent need for a specific and sensitive serological test...
August 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28678829/intrapartum-pcr-assay-versus-antepartum-culture-for-assessment-of-vaginal-carriage-of-group-b-streptococci-in-a-danish-cohort-at-birth
#15
Mohammed Rohi Khalil, Niels Uldbjerg, Poul Bak Thorsen, Jens Kjølseth Møller
The aim of this study was to compare the performances of two strategies for predicting intrapartum vaginal carriage of group B streptococci (GBS). One strategy was based on an antepartum culture and the other on an intrapartum polymerase chain reaction (PCR). We conducted a prospective observational study enrolling 902 pregnant women offered GBS screening before delivery by two strategies. The Culture-strategy was based on vaginal and rectal cultures at 35-37 weeks' gestation, whereas the PCR-strategy was based on PCR assay on intrapartum vaginal swab samples...
2017: PloS One
https://www.readbyqxmd.com/read/28650987/accuracy-of-zika-virus-disease-case-definition-during-simultaneous-dengue-and-chikungunya-epidemics
#16
José Ueleres Braga, Clarisse Bressan, Ana Paula Razal Dalvi, Guilherme Amaral Calvet, Regina Paiva Daumas, Nadia Rodrigues, Mayumi Wakimoto, Rita Maria Ribeiro Nogueira, Karin Nielsen-Saines, Carlos Brito, Ana Maria Bispo de Filippis, Patrícia Brasil
BACKGROUND: Zika is a new disease in the American continent and its surveillance is of utmost importance, especially because of its ability to cause neurological manifestations as Guillain-Barré syndrome and serious congenital malformations through vertical transmission. The detection of suspected cases by the surveillance system depends on the case definition adopted. As the laboratory diagnosis of Zika infection still relies on the use of expensive and complex molecular techniques with low sensitivity due to a narrow window of detection, most suspected cases are not confirmed by laboratory tests, mainly reserved for pregnant women and newborns...
2017: PloS One
https://www.readbyqxmd.com/read/28645088/risk-based-screening-combined-with-a-pcr-based-test-for-group-b-streptococci-diminishes-the-use-of-antibiotics-in-laboring-women
#17
Mohammed R Khalil, Niels Uldbjerg, Poul B Thorsen, Birgitte Henriksen, Jens K Møller
OBJECTIVE: To assess the performance of a polymerase chain reaction - group B streptococci test (PCR-GBS test) - in deciding antibiotic prophylaxis in term laboring women. STUDY DESIGN: In this observational study, we enrolled 902 unselected Danish term pregnant women. During labor, midwives obtained vaginal swabs that were used for both GBS cultures (reference standard) and for the PCR-GBS test. Furthermore, we recorded the presence of risk factors for EOGBS (Early Onset Group B Streptococcal disease): (1) Bacteriuria during current pregnancy, (2) Prior infant with EOGBS (3) Temperature above 38...
August 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28631186/association-between-epidermal-growth-factor-receptor-amplification-and-adp-ribosylation-factor-1-methylation-in-human-glioblastoma
#18
Concha López-Ginés, Lara Navarro, Lisandra Muñoz-Hidalgo, Enrique Buso, José Manuel Morales, Rosario Gil-Benso, Mariela Gregori-Romero, Javier Megías, Pedro Roldán, Remedios Segura-Sabater, José Manuel Almerich-Silla, Daniel Monleón, Miguel Cerdá-Nicolás
PURPOSE: Glioblastoma (GB) is the most frequent and most malignant primary brain tumor in adults. Previously, it has been found that both genetic and epigenetic factors may play critical roles in its etiology and prognosis. In addition, it has been found that the epidermal growth factor receptor gene (EGFR) is frequently over-expressed and amplified in primary GBs. Here, we assessed the promoter methylation status of 10 genes relevant to GB and explored associations between these findings and the EGFR gene amplification status...
August 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28624908/development-and-validation-of-kasp-markers-for-the-greenbug-resistance-gene-gb7-and-the-hessian-fly-resistance-gene-h32-in-wheat
#19
Chor-Tee Tan, Hangjin Yu, Yan Yang, Xiangyang Xu, Mingshun Chen, Jackie C Rudd, Qingwu Xue, Amir M H Ibrahim, Lisa Garza, Shichen Wang, Mark E Sorrells, Shuyu Liu
Greenbug and Hessian fly are important pests that decrease wheat production worldwide. We developed and validated breeder-friendly KASP markers for marker-assisted breeding to increase selection efficiency. Greenbug (Schizaphis graminum Rondani) and Hessian fly [Mayetiola destructor (Say)] are two major destructive insect pests of wheat (Triticum aestivum L.) throughout wheat production regions in the USA and worldwide. Greenbug and Hessian fly infestation can significantly reduce grain yield and quality. Breeding for resistance to these two pests using marker-assisted selection (MAS) is the most economical strategy to minimize losses...
June 17, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28622535/vitamin-d-mediates-the-relationship-between-placental-cathelicidin-and-group-b-streptococcus-colonization-during-pregnancy
#20
Christine C Akoh, Eva K Pressman, Corrie M Whisner, Carrie Thomas, Chang Cao, Tera Kent, Elizabeth Cooper, Kimberly O O'Brien
Vitamin D is thought to modulate innate immune responses, and recent studies have highlighted the autocrine and paracrine functions of vitamin D in the placenta. Our objective was to determine the relationship between maternal vitamin D status and placental antimicrobial peptide (AMP) expression in a group of racially and ethnically diverse pregnant adolescents. In this study, 158 pregnant adolescents were recruited from the Rochester Adolescent Maternity Program (RAMP) in Rochester, NY. Maternal serum concentrations of the vitamin D biomarkers, 25-hydroxyvitamin D (25(OH)D) and 1,25-dihydroxyvitamin D (1,25(OH)2D), were measured at mid-gestation (∼26 weeks) and at delivery...
June 2017: Journal of Reproductive Immunology
keyword
keyword
44601
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"