يعرض 1 - 10 نتائج من 62 نتيجة بحث عن '"Somporn Srifuengfung"', وقت الاستعلام: 1.32s تنقيح النتائج
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    دورية أكاديمية

    المصدر: Journal of Traditional and Complementary Medicine, Vol 10, Iss 6, Pp 594-598 (2020)

    الوصف: Background and aim: Kaffir lime fruit peel oil and Kaffir lime leaf oil have been reported for their activities against respiratory tract pathogens. The purpose of the study was to develop clear oral sprays to be used as a first-defense oral spray. Experimental procedure: Clear antibacterial oral sprays were prepared and analyzed for their respective active major compounds, using GC-MS. The sprays were tested against a Gr. A streptococcal clinical isolate and 3 standard respiratory tract pathogens, using Broth microdilution method. A 4-month stability test was carried out as well. Results and conclusion: Six clear oral sprays, three formulae composed of Kaffir lime fruit peel oil (6, 10, 13%v/v KLO) and the other three formulae containing Kaffir lime leaf oil (4, 8, 12%v/v KLLO), were developed. The active compounds in KLO were α-terpineol and terpinene-4-ol whereas that in KLLO was citronellal. All oral sprays exhibited antibacterial activity against one Group A streptococcal clinical isolate and three respiratory pathogenic pathogens, Staphylococcus aureus ATCC 29213, Streptococcus pneumoniae ATCC 49619, and Haemophilus influenzae ATCC 49247, among which the strongest activity was against H. influenzae ATCC 49247. The antibacterial activity of all oral sprays remained unchanged in an accelerated stability test, at 4, 30, and 45 °C under 75% relative humidity, throughout the 4-month storage.

    وصف الملف: electronic resource

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    دورية أكاديمية
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    دورية أكاديمية
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    المؤلفون: Stephanie W Lo, Kate Mellor, Robert Cohen, Alba Redin Alonso, Sophie Belman, Narender Kumar, Paulina A Hawkins, Rebecca A Gladstone, Anne von Gottberg, Balaji Veeraraghavan, K L Ravikumar, Rama Kandasamy, Sir Andrew J Pollard, Samir K Saha, Godfrey Bigogo, Martin Antonio, Brenda Kwambana-Adams, Shaper Mirza, Sadia Shakoor, Imran Nisar, Jennifer E Cornick, Deborah Lehmann, Rebecca L Ford, Betuel Sigauque, Paul Turner, Jennifer Moïsi, Stephen K Obaro, Ron Dagan, Idrissa Diawara, Anna Skoczyńska, Hui Wang, Philip E Carter, Keith P Klugman, Gail Rodgers, Robert F Breiman, Lesley McGee, Stephen D Bentley, Carmen Muñoz-Almagro, Emmanuelle Varon, Abdullah Brooks, Alejandra Corso, Alexander Davydov, Alison Maguire, Anmol Kiran, Benild Moiane, Bernard Beall, Chunjiang Zhao, David Aanensen, Dean Everett, Diego Faccone, Ebenezer Foster-Nyarko, Ebrima Bojang, Ekaterina Egorova, Elena Voropaeva, Eric Sampane-Donkor, Ewa Sadowy, Geetha Nagaraj, Helio Mucavele, Houria Belabbès, Naima Elmdaghri, Jennifer Verani, Jeremy Keenan, John Lees, Jyothish N Nair Thulasee Bhai, Kedibone Ndlangisa, Khalid Zerouali, Leon Bentley, Leonid Titov, Linda De Gouveia, Maaike Alaerts, Margaret Ip, Maria Cristina de Cunto Brandileone, Md Hasanuzzaman, Metka Paragi, Michele Nurse-Lucas, Mignon du Plessis, Mushal Ali, Nicholas Croucher, Nicole Wolter, Noga Givon-Lavi, Nurit Porat, Özgen Köseoglu Eser, Pak-Leung Ho, Patrick Eberechi Akpaka, Paula Gagetti, Peggy-Estelle Tientcheu, Pierra Law, Rachel Benisty, Rafal Mostowy, Roly Malaker, Samanta Cristine Grassi Almeida, Sanjay Doiphode, Shabir Madhi, Shamala Devi Sekaran, Stuart Clarke, Somporn Srifuengfung, Susan Nzenze, Tamara Kastrin, Theresa Ochoa, Waleria Hryniewicz, Yulia Urban

    المصدر: The Lancet Microbe. 3:e735-e743

    الوصف: Background Serotype 24F is one of the emerging pneumococcal serotypes after the introduction of pneumococcal conjugate vaccine (PCV). We aimed to identify lineages driving the increase of serotype 24F in France and place these findings into a global context. Methods Whole-genome sequencing was performed on a collection of serotype 24F pneumococci from asymptomatic colonisation (n=229) and invasive disease (n=190) isolates among individuals younger than 18 years in France, from 2003 to 2018. To provide a global context, we included an additional collection of 24F isolates in the Global Pneumococcal Sequencing (GPS) project database for analysis. A Global Pneumococcal Sequence Cluster (GPSC) and a clonal complex (CC) were assigned to each genome. Phylogenetic, evolutionary, and spatiotemporal analysis were conducted using the same 24F collection and supplemented with a global collection of genomes belonging to the lineage of interest from the GPS project database (n=25 590). Findings Serotype 24F was identified in numerous countries mainly due to the clonal spread of three lineages: GPSC10 (CC230), GPSC16 (CC156), and GPSC206 (CC7701). GPSC10 was the only multidrug-resistant lineage. GPSC10 drove the increase in 24F in France and had high invasive disease potential. The international dataset of GPSC10 (n=888) revealed that this lineage expressed 16 other serotypes, with only six included in 13-valent PCV (PCV13). All serotype 24F isolates were clustered in a single clade within the GPSC10 phylogeny and long-range transmissions were detected from Europe to other continents. Spatiotemporal analysis showed GPSC10-24F took 3–5 years to spread across France and a rapid change of serotype composition from PCV13 serotype 19A to 24F during the introduction of PCV13 was observed in neighbouring country Spain. Interpretation Our work reveals that GPSC10 alone is a challenge for serotype-based vaccine strategy. More systematic investigation to identify lineages like GPSC10 will better inform and improve next-generation preventive strategies against pneumococcal diseases. Funding Bill & Melinda Gates Foundation, Wellcome Sanger Institute, and the US Centers for Disease Control and Prevention.

    وصف الملف: text; application/pdf

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    المصدر: Microbial genomics. 8(4)

    الوصف: Pneumococcal serotype 35B is an important non-conjugate vaccine (non-PCV) serotype. Its continued emergence, post-PCV7 in the USA, was associated with expansion of a pre-existing 35B clone (clonal complex [CC] 558) along with post-PCV13 emergence of a non-35B clone previously associated with PCV serotypes (CC156). This study describes lineages circulating among 35B isolates in South Africa before and after PCV introduction. We also compared 35B isolates belonging to a predominant 35B lineage in South Africa (GPSC5), with isolates belonging to the same lineage in other parts of the world. Serotype 35B isolates that caused invasive pneumococcal disease in South Africa in 2005-2014 were characterized by whole-genome sequencing (WGS). Multi-locus sequence types and global pneumococcal sequence clusters (GPSCs) were derived from WGS data of 63 35B isolates obtained in 2005-2014. A total of 262 isolates that belong to GPSC5 (115 isolates from South Africa and 147 from other countries) that were sequenced as part of the global pneumococcal sequencing (GPS) project were included for comparison. Serotype 35B isolates from South Africa were differentiated into seven GPSCs and GPSC5 was most common (49 %, 31/63). While 35B was the most common serotype among GPSC5/CC172 isolates in South Africa during the PCV13 period (66 %, 29/44), 23F was the most common serotype during both the pre-PCV (80 %, 37/46) and PCV7 period (32 %, 8/25). Serotype 35B represented 15 % (40/262) of GPSC5 isolates within the global GPS database and 75 % (31/40) were from South Africa. The predominance of the GPSC5 lineage within non-vaccine serotype 35B, is possibly unique to South Africa and warrants further molecular surveillance of pneumococci.

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    الوصف: Supplementary Material for 'A Streptococcus pneumoniae lineage usually associated with pneumococcal conjugate vaccine (PCV) serotypes is the most common cause of serotype 35B invasive disease in South Africa, following routine use of PCV', as published in Microbial Genomics .

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    المصدر: Microbiology Resource Announcements

    الوصف: A Neisseria gonorrhoeae multilocus sequence type (MLST) ST7363 strain was isolated from a patient at the Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand, in 2010 and completely sequenced. This strain is susceptible to ceftriaxone and cefixime. A complete circular chromosome and circular plasmids were assembled from combined Oxford Nanopore Technologies (ONT) and Illumina sequencing.

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