Results 61 to 70 of about 91,846 (294)

Emergent Invasive Group A Streptococcus dysgalactiae subsp. equisimilis, United States, 2015–2018

Emerging Infectious Diseases, 2019
The term group A Streptococcus is considered synonymous for the species Streptococcus pyogenes. We describe an emergent invasive S. dysgalactiae subspecies equisimilis lineage that obtained the group A antigen through a single ancestral recombination ...
Sopio Chochua, Joy Rivers, Saundra Mathis, Zhongya Li, Srinivasan Velusamy, Lesley McGee, Chris Van Beneden, Yuan Li, Benjamin J. Metcalf, Bernard Beall   +9 more
doaj   +1 more source

A Newly Discovered Bordetella Species Carries a Transcriptionally Active CRISPR-Cas with a Small Cas9 Endonuclease [PDF]

, 2015
Background Clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated genes (cas) are widely distributed among bacteria.
Dudley, Edward G., Harvill, Eric T., Hu, Kai, Ivanov, Yury V., Linz, Bodo, Register, Karen B., Rivera, Israel, Shariat, Nikki   +7 more
core   +2 more sources

Mechanical Environment Afforded by Engineered Hydrogel Critically Regulates Survival of Neural Stem Cells Transplanted in the Injured Spinal Cord via Piezo1‐Mediated Mechanotransduction

Advanced Science, EarlyView.
Neural stem cell transplantation shows promise for spinal cord repair, but poor graft survival limits therapeutic efficacy. This study demonstrates that increasing hydrogel stiffness from 10% to 16% concentration significantly enhances transplanted neural stem cell survival through Piezo1‐mediated mechanotransduction, revealing mechanical properties as
Hee Hwan Park, Yurim Kim, Byeong Seong Jang, Simay Genişcan, Dong Hoon Hwang, Yeojin Seo, Seung‐Ah Jee, Hyo Gyeong Seo, Hyung Soon Kim, Ariandokht Einisadr, Ho‐Jeong Kim, Seolhee Lee, Sangwoo Kwon, Kyung Sook Kim, Kang In Lee, Jae Young Lee, Joo Min Park, Young‐Min Kim, Soo‐Chang Song, Byung Gon Kim   +19 more
wiley   +1 more source

Evaluation of the effect of tyrothricin on beta-hemolytic streptococci in salva. Part I: The effect of salvia upon bacteria. Part II: Effect of tyrothricin on the New York 5 strain of Streptococcus pyogenes in saliva [PDF]

, 1949
Part II of thesis by Brancato, Noyes, and Swift. Part I of thesis by Swift. Thesis (M.A.)--Boston UniversityThe antibacterial effect of saliva has been known for many years.
Brancato, Frank P., Noyes, Wilbur F., III, Swift, Andrew Howard Potter   +2 more
core   +1 more source

The Bacteriophages ofStreptococcus pyogenes

Microbiology Spectrum, 2019
ABSTRACTThe bacteriophages ofStreptococcus pyogenes(group A streptococcus) play a key role in population shaping, genetic transfer, and virulence of this bacterial pathogen. Lytic phages like A25 can alter population distributions through elimination of susceptible serotypes but also serve as key mediators for genetic transfer of virulence genes and ...
W Michael, McShan, Kimberly A, McCullor, Scott V, Nguyen   +2 more
openaire   +2 more sources

Programmable Hydrogels: Frontiers in Dynamic Closed‐Loop Systems, Biomimetic Synergy, and Clinical Translation

Advanced Science, EarlyView.
This review summarizes the design principles and key features of programmable hydrogels that respond to multiple stimuli. It then delves into the cutting‐edge mechanisms of self‐executing systems, highlighting their role as the cornerstone of next‐generation programmable hydrogels (NGPHs).
Guangli Xiang, Bohan Yin, Behzad Shiroud Heidari, George Youssef, Monika Gosecka, Mateusz Gosecki, Fernando G. Torres, Siu Hong Dexter Wong, Jagan Mohan Dodda   +8 more
wiley   +1 more source

The Shift of Bacterial Sensitivity with Antibiotics in Acute Tonsillitis

Journal of Nobel Medical College, 2021
Background: The infection of tonsil may occur primarily or secondarily as a result of upper respiratory tract infection, usually preceded by a viral infection. Bacterial tonsillitis is most commonly caused by Streptococcus pyogenes.
Brihaspati Sigdel
doaj   +1 more source

Group A Streptococcal S Protein Utilizes Red Blood Cells as Immune Camouflage and Is a Critical Determinant for Immune Evasion. [PDF]

, 2019
Group A Streptococcus (GAS) is a human-specific pathogen that evades the host immune response through the elaboration of multiple virulence factors. Although many of these factors have been studied, numerous proteins encoded by the GAS genome are of ...
Campeau, Anaamika, Dehaini, Diana, Fang, Ronnie H, Gonzalez, David J, Greene, Trever, Holay, Maya, Lamsa, Anne, LaRock, Christopher N, Pogliano, Kit, Sands, Jenna S, Wei, Xiaoli, Wierzbicki, Igor H, Ying, Man, Zhang, Liangfang, Zuniga, Elina   +14 more
core  

Phage ϕC2 mediates transduction of Tn6215, encoding erythromycin resistance, between Clostridium difficile strains [PDF]

, 2013
UNLABELLED: In this work, we show that Clostridium difficile phage ϕC2 transduces erm(B), which confers erythromycin resistance, from a donor to a recipient strain at a frequency of 10(-6) per PFU.
Chang, Barbara J, Emmett, Warren, Goh, Shan, Hussain, Haitham, Mullany, Peter, Riley, Thomas V   +5 more
core   +3 more sources

The use of transgenic animals for xenotransplantation: An update

Animal Models and Experimental Medicine, EarlyView.
One way to produce genetically modified pigs is to use somatic cell nuclear transfer (SCNT). This procedure involves removing the metaphase plate from a mature oocyte using micromanipulation and then transferring the modified nucleus from the donor somatic cell to the oocyte.
Julia Motławska, Ana Amaral, Marta Cerveira‐Pinto, Paweł Kordowitzki   +3 more
wiley   +1 more source