TccP4: a novel effector identified in the strain 1551-2 required for attaching and effacing lesion formation on infected Nck-null cells.

is a pathogen that causes sporadic cases and outbreaks of diarrhea. The main virulence feature of this bacterium is the attaching and effacing (AE) lesion formation on infected intestinal epithelial cells, which is characterized by the formation of pedestal-like structures that are rich in F-actin. The Brazilian 1551-2 strain can recruit F-actin using both the Nck-dependent and the Nck-independent pathways, the latter of which uses an adaptor protein named Tir-cytoskeleton coupling protein (TccP/EspF).

Virus-like particle-based vaccines targeting the mosquito salivary protein TRIO.

Malaria is a highly lethal infectious disease caused by parasites. These parasites are transmitted to vertebrate hosts when mosquitoes of the genus probe for a blood meal. Sporozoites, the infectious stage of , transit to the liver within hours of injection into the dermis.

LitR and its quorum-sensing regulators modulate biofilm formation by .

Quorum sensing controls numerous processes ranging from the production of virulence factors to biofilm formation. Biofilms, communities of bacteria that are attached to one another and/or a surface, are common in nature, and when they form, they can produce a quorum of bacteria. One model system to study biofilms is the bacterium , which forms a biofilm that promotes the colonization of its symbiotic host.

Metagenome-assembled genomes (MAGs) of the emerging pathogen from enrichment of coastal seawater, sediment, and algae at St. John's Island, Singapore.

Coastal water, sediment, and algae samples were collected from St. John's Island, Singapore, and enriched in either broth or agar. Metagenomic sequencing was carried out on DNA from these enrichments and analyzed.

Update on the evolving landscape of pneumococcal capsule types: new discoveries and way forward.

SUMMARY (the "pneumococcus") is a significant human pathogen. The key determinant of pneumococcal fitness and virulence is its ability to produce a protective polysaccharide (PS) capsule, and anti-capsule antibodies mediate serotype-specific opsonophagocytic killing of bacteria. Notably, immunization with pneumococcal conjugate vaccines (PCVs) has effectively reduced the burden of disease caused by serotypes included in vaccines but has also spurred a relative upsurge in the prevalence of non-vaccine serotypes.

Isolation and Identification of Cadmium-Reducing Bacteria from Contaminated Coastal Sediment in the Northern Coast of Indramayu, Indonesia.

<b>Background and Objective:</b> Cadmium (Cd) is one of the heavy metal pollutants and its accumulation impacts the sustainability of marine organisms. Current research aimed to isolate and identify the cadmium-reducing bacteria from contaminated coastal sediment in Karangsong Port, Indramayu, Indonesia. The isolates were investigated for their potential to reduce cadmium and showed the cadmium reduction drastically up to 50% at 6 hrs treated under different cadmium concentrations of 0, 5, 1 and 1.

Discovery of a Novel Species from Indonesian Peat Soil with Potent Anti Multidrug-Resistant Activity.

<b>Background and Objective:</b> Peatlands are unique ecosystems rich in microbial diversity, including bacteria with potential antibiotic activity. This study focuses on the isolation and characterization of bacteria from Indonesian peat soil, particularly their potential to produce antibiotics against multidrug-resistant (MDR) pathogens, including Methicillin-Resistant <i>Staphylococcus aureus</i> (MRSA). <b>Materials and Methods:</b> Bacterial isolates were rejuvenated on nutrient agar and subjected to antimicrobial activity testing using the Bauer & Kirby diffusion method against MRSA.

Whole Genome Sequencing Insights on Extensive Drug Resistant and Traumatic Infection.

<b>Background and Objective:</b> It is well documented that Whole Genome Sequencing (WGS) has recently used to explore new resistance patterns and track the dissemination of extensive and pan drug-resistant microbes in healthcare settings. This article explores the link between traumatic infections caused by road traffic accidents (RTAs) leading to coma and the development of chest infections caused by extensively drug-resistant (XDR) <i>Klebsiella pneumoniae</i> and <i>Pseudomonas aeruginosa</i>. <b>Materials and Methods:</b> The study was carried out from March to December 2022 which included a 45-year-old male patient admitted to the ICU of Al Ramadi Teaching Hospitals following a severe RTA that resulted in a TBI and subsequent coma.

MftG is crucial for ethanol metabolism of mycobacteria by linking mycofactocin oxidation to respiration.

Mycofactocin is a redox cofactor essential for the alcohol metabolism of mycobacteria. While the biosynthesis of mycofactocin is well established, the gene , which encodes an oxidoreductase of the glucose-methanol-choline superfamily, remained functionally uncharacterized. Here, we show that MftG enzymes are almost exclusively found in genomes containing mycofactocin biosynthetic genes and are present in 75% of organisms harboring these genes.

Persistent cross-species transmission systems dominate Shiga toxin-producing O157:H7 epidemiology in a high incidence region: A genomic epidemiology study.

Several areas of the world suffer a notably high incidence of Shiga toxin-producing . To assess the impact of persistent cross-species transmission systems on the epidemiology of O157:H7 in Alberta, Canada, we sequenced and assembled O157:H7 isolates originating from collocated cattle and human populations, 2007-2015. We constructed a timed phylogeny using BEAST2 using a structured coalescent model.

Refractory Psychosis as a Red Flag for End of Life in Individuals With Dementia With Lewy Bodies: A Case Series and Re-analysis of Prior Qualitative Data.

Objectives: Many individuals with dementia with Lewy bodies (DLB) die of disease-related complications, but predicting the end of life can be challenging. We identified a phenotype associated with approaching end of life.

Methods: We present 4 exemplar cases where individuals with DLB experienced refractory psychosis before death.

Cell-Free Systems to Mimic and Expand Metabolism.

Cell-free synthetic biology incorporates purified components and/or crude cell extracts to carry out metabolic and genetic programs. While protein synthesis has historically been the primary focus, more metabolism researchers are now turning toward cell-free systems either to prototype pathways for cellular implementation or to design new-to-nature reaction networks that incorporate environmentally relevant substrates or new energy sources. The ability to design, build, and test enzyme combinations has accelerated efforts to understand metabolic bottlenecks and engineer high-yielding pathways.

Telomemore enables single-cell analysis of cell cycle and chromatin condensation.

Single-cell RNA-seq methods can be used to delineate cell types and states at unprecedented resolution but do little to explain why certain genes are expressed. Single-cell ATAC-seq and multiome (ATAC + RNA) have emerged to give a complementary view of the cell state. It is however unclear what additional information can be extracted from ATAC-seq data besides transcription factor binding sites.

Influenza A virus NS2 protein acts on vRNA-resident polymerase to drive the transcription to replication switch.

The heterotrimeric RNA-dependent RNA polymerase (RdRp) of influenza A virus catalyzes viral RNA transcription (vRNA→mRNA) and replication (vRNA→cRNA→vRNA) by adopting different conformations. A switch from transcription to replication occurs at a relatively late stage of infection. We recently reported that the viral NS2 protein, expressed at later stages from a spliced transcript of the NS segment messenger RNA (mRNA), inhibits transcription, promotes replication and plays a key role in the transcription-to-replication switch.

Factors associated with early and late losses of primary patency following drug-coated balloon for dysfunctional arteriovenous fistula.

Objective: This study aimed to evaluate the effectiveness of a drug-coated balloon (DCB) for the treatment of dysfunctional arteriovenous fistulas (AVFs) and to identify the risk factors associated with early and late losses of primary patency following DCB in real-world practice.

Methods: This multicenter, retrospective study included 407 patients (72 ± 11 years, 64.1% males) with dysfunctional AVFs (juxta-anastomotic lesion location in 58.

Histidine Tags in Human Recombinant Alpha B-Crystallin (HSPB5) Proteins Are Detrimental for Zinc Binding Studies.

The stability of α-crystallin, the major protein of the mammalian eye lens and a molecular chaperone, is one of the most crucial factors for its survival and function. The chaperone-like activity and stability of α-crystallin dramatically increased in the presence of Zn. Each subunit of α-crystallin could bind multiple zinc atoms through inter-subunit bridging and cause enhanced stability.

[Urinary Salmonella Enteritidis Carriage in a Patient Living with HIV].

Tüm dünyada önemli bir halk sağlığı sorunu olan non-tifoidal Salmonella (NTS) sıklıkla gastrointestinal enfeksiyonlara neden olmakta ve taşıyıcılığa yol açabilmektedir. NTS'nin idrarda izolasyonu ve idrar taşıyıcılığı oldukça nadirdir ve predispozan faktörlerin varlığında sıklığı artmaktadır. Kinolon dirençli Salmonella spp.

[Investigation of the Antifungal Susceptibility and Virulence Factors of Fusarium Strains Isolated from Clinical Samples].

Fusarium türleri, insanlarda keratit ve onikomikoz başta olmak üzere invaziv veya invaziv olmayan çeşitli enfeksiyonlarda etken olan küf mantarlarıdır. Taksonomide Fusarium cinsi, tür kompleks [species complex (SC)]'lere ayrılmış, SC'ler de türlere ayrılmıştır. SC/tür düzeyinde identifikasyonun, morfolojik özelliklere göre yapılmasının güçlüğü nedeniyle moleküler yöntemlerin kullanımı önerilmektedir.

[Can Coronavirus HCoV-229E be Used as a Model Virus Instead of SARS-CoV-2 in Antiviral Efficacy Studies?].

Son yıllarda pandemi nedeniyle virüslerin tanı ve tedavisine yönelik terapötik yöntemlerin geliştirilmesi ve antivirallerin test edilmesi amacıyla çok sayıda in vitro çalışma yapılmaktadır. Literatürde SARS-CoV-2'nin modellenebilmesi için HCoV-229E'nin kullanımının güvenli ve yeterli olup olmadığını inceleyen çalışmalar sınırlıdır. Bu sebeple bu çalışmada, BSL-2 şartlarında gerçekleştirilebilen HCoV-229E kültürü ve kantitasyon çalışmalarının, BSL-3 şartları gerektiren SARS-CoV-2 deneylerinde bir ön çalışma modeli olup olamayacağının antiviral etkinlik analizleri üzerinden araştırılması amaçlanmıştır.

[Effects of Chlorhexidine Gluconate Bathing Applied to Cancer Patients on MRSA and VRE Colonization: A Cross-Over Design Study].

Kanıtlar, klorheksidin glukonat (CHG) solüsyonuyla gerçekleştirilen banyonun, sağlık hizmeti ilişkili enfeksiyonlar (SHİE)'a neden olan mikroorganizmaların kolonizasyonunu azalttığını göstermektedir. Bu çalışmada yoğun bakım ünitesi (YBÜ)'nde yatan kanser hastalarında CHG banyosunun MRSA ve VRE kolonizasyonu üzerindeki etkilerinin değerlendirilmesi amaçlanmıştır. Bu çapraz tasarımlı çalışmada, kanser hastalarında standart su + sabun banyosuyla %2'lik CHG banyosu karşılaştırılmıştır.

[Investigation of Virulence Genes in Campylobacter Species Isolated from Patients with Acute Diarrhea].

Akut gastroenterit dünya genelinde en yaygın enfeksiyon hastalıklarından biridir. Bu hastalıklar gelişmekte olan ülkelerde çocuk ölümlerine ve ciddi ekonomik kayıplara neden olmuştur. Hastalık genellikle yaygın diyare şeklinde kendini gösterse de bazı olgularda şiddetli enfeksiyon belirtilerine, hatta ölümlere neden olmuştur.

Antifungal activity of 2-adamantylamine hydrochloride on and .

Increased virulence and drug resistance in species of resulted in reduced disease control and further demand the development of potent antifungal drugs. The repurposing of non-antifungal drugs and combination therapy has become an attractive alternative to counter the emerging drug resistance and toxicity of existing antifungal drugs against and non-albicans species. This study aimed to accelerate antifungal drug development process by drug repurposing approach.

Microbial surveillance versus cytokine responsiveness in native and non-native house sparrows.

The success of introduced species often relies on flexible traits, including immune system traits. While theories predict non-natives will have weak defences due to decreased parasite pressure, effective parasite surveillance remains crucial, as infection risk is rarely zero and the evolutionary novelty of infection is elevated in non-native areas. This study examines the relationship between parasite surveillance and cytokine responsiveness in native and non-native house sparrows, hypothesizing that non-natives maintain high pathogen surveillance while avoiding costly inflammation.

Sex-dependent modulation of caerulein-induced acute pancreatitis in C57BL/6J mice.

Acute pancreatitis (AP) is a life-threatening condition, with a higher mortality rate in men than women and in which estrogens might play a protective role. This study aimed to investigate sex-dependent differences in a mouse model of caerulein-induced AP. Thirty-six C57BL/6J mice (19 females and 17 males) were treated intraperitoneally with phosphate-buffered saline or caerulein, and sacrificed 12 hours, 2 days, or 7 days after the last injection.

Clearing the path for whole-mount labeling and quantification of neuron- and vessel-density in adipose tissue.

White adipose tissue (WAT) comprises a plethora of cell types beyond adipocytes forming a regulatory network that ensures systemic energy homeostasis. Intertissue communication is facilitated by metabolites and signaling molecules that are spread by vasculature and nerves. Previous works indicated that WAT responds to environmental cues by adapting the abundance of these "communication routes", however, high intra-tissue heterogeneity questions the informative value of bulk or single cell analyses and underscores the necessity of whole-mount imaging.