Antibacterial and Antifungal Potential of Hermetia illucens Hemolymph Contained-Peptides.

Antimicrobial peptides (AMPs) constitute a chemically and structurally heterogeneous family of molecules produced by a wide range of living organisms, including plants, fish, amphibians, mammals, and insects. Their expression is particularly high in hosts frequently exposed to microorganisms, where AMPs play a key role in innate immune responses. Insects represent one of the richest natural sources of AMPs.

Functional implications of respiratory syncytial virus F sequence variability: a comparative analysis using contemporary RSV isolates.

Respiratory syncytial virus (RSV) remains a major global health issue. Therapeutic options are limited, but new prophylactics, all targeting the fusion (F) glycoprotein, were recently licensed. Although F sequence variation is limited, it is unclear if and how this variability translates to phenotypical differences.

Widespread antibiotic heterotolerance in bacteria remains undetected by resistance assays.

Despite global efforts, antimicrobial resistance persists. Mechanisms like heterotolerance further undermine antibiotic effectiveness. Testing > 1000 clinical strains revealed widespread heterotolerance largely missed by conventional MIC-based diagnostics.

Speeding up drug susceptibility testing in Mycobacterium tuberculosis using RNA biomarkers.

Background: Efficient management of drug-resistant tuberculosis relies on fast diagnostics. To accelerate phenotypic drug susceptibility testing [pDST] for Mycobacterium tuberculosis [TB], we introduce TRACeR-TB, a test that infers drug resistance from antibiotic-specific mRNA biomarkers.

Methods: To develop TRACeR-TB, target genes were first identified through RNA sequencing experiments conducted on two drug-exposed, susceptible strains for four antitubercular drugs.

Evaluating the Impact of N-Glycan Sequon Removal in the p27 Peptide on RSV F Protein Immunogenicity and Functionality.

Respiratory syncytial virus (RSV) is the leading cause of acute lower respiratory tract infections in young children, elderly and immunocompromised patients worldwide. The RSV fusion (F) protein, which has 5-6 N-glycosylation sites depending on the strain, is a major target for vaccine development. Two to three of these sites are located in the p27 peptide, which is considered absent in virions.

Assay Development for High-Throughput Drug Screening Against Mycobacteria.

Mycobacterium abscessus (Mab) infections are challenging to treat due to high intrinsic drug resistance, comparable to multidrug-resistant tuberculosis. Treatments are extremely ineffective and based on a multi-drug regimen, resulting in low patient compliance. Consequently, the scientific community is urged to identify new and effective drugs to treat these infections.

The Liebeskind-Srogl Cross-Coupling Reaction as a Crucial Step in the Synthesis of New Squaramide-Based Antituberculosis Agents.

The synthesis of an extensive series of new squaramides with high potential in treating drug-resistant tuberculosis employing the Liebeskind-Srogl cross-coupling reaction is presented. Using the protocol given and various substrates, we assessed the scope and limitations of our methodology and prepared an extensive range of desired compounds. Moreover, H NMR spectra in solution show the presence of two rotational conformers (rotamers) in special cases.

In vitro modelling of bacterial pneumonia: a comparative analysis of widely applied complex cell culture models.

Bacterial pneumonia greatly contributes to the disease burden and mortality of lower respiratory tract infections among all age groups and risk profiles. Therefore, laboratory modelling of bacterial pneumonia remains important for elucidating the complex host-pathogen interactions and to determine drug efficacy and toxicity. In vitro cell culture enables for the creation of high-throughput, specific disease models in a tightly controlled environment.

A high-throughput target-based screening approach for the identification and assessment of mycothione reductase inhibitors.

Unlabelled: The World Health Organization's goal to combat tuberculosis (TB) is hindered by the emergence of anti-microbial resistance, therefore necessitating the exploration of new drug targets. Multidrug regimens are indispensable in TB therapy as they provide synergetic bactericidal effects, shorten treatment duration, and reduce the risk of resistance development. The research within our European RespiriTB consortium explores energy metabolism to identify new drug candidates that synergize with bedaquiline, with the aim of discovering more efficient combination drug regimens.

All Eyes on the Prefusion-Stabilized F Construct, but Are We Missing the Potential of Alternative Targets for Respiratory Syncytial Virus Vaccine Design?

Respiratory Syncytial Virus (RSV) poses a significant global health concern as a major cause of lower respiratory tract infections (LRTIs). Over the last few years, substantial efforts have been directed towards developing vaccines and therapeutics to combat RSV, leading to a diverse landscape of vaccine candidates. Notably, two vaccines targeting the elderly and the first maternal vaccine have recently been approved.

Subtractive Immunization as a Method to Develop Respiratory Syncytial Virus (RSV)-Specific Monoclonal Antibodies.

Respiratory Syncytial Virus (RSV) is a significant cause of lower respiratory tract infections in the young, the elderly, and in immunodeficient patients. As such, the virus represents an important cause of morbidity and mortality worldwide. Development of monoclonal antibodies against RSV has resulted in a commercial prophylaxis, palivizumab (Synagis), and different antibodies that have improved our understanding of the structure of the viral proteins.

Expanding the squaramide library as mycobacterial ATP synthase inhibitors: Innovative synthetic pathway and biological evaluation.

Mycobacterial ATP synthase is a validated therapeutic target for combating drug-resistant tuberculosis. Inhibition of this enzyme has been featured as an efficient strategy for the development of new antimycobacterial agents against drug-resistant pathogens. In this study, we synthesised and explored two distinct series of squaric acid analogues designed to inhibit mycobacterial ATP synthase.

In-depth biological characterization of two black soldier fly anti- peptides reveals LPS-binding and immunomodulating effects.

As effector molecules of the innate immune system, antimicrobial peptides (AMPs) have gathered substantial interest as a potential future generation of antibiotics. Here, we demonstrate the anti- activity and lipopolysaccharide (LPS)-binding ability of HC1 and HC10, two cecropin peptides from the black soldier fly (). Both peptides are active against a wide range of strains, including drug-resistant clinical isolates.

Phytochemical characterization and antifungal potential of leaf extracts of .

The investigation of natural alternatives to conventional fungicides is of imminent need. (Britton & P. Wilson) Bisse is a Cuban endemic plant species belonging to the Myrtaceae family.

Development and validation of a multiplex electrochemiluminescence immunoassay to evaluate dry eye disease in rat tear fluids.

Dry eye disease (DED) is a challenge in ophthalmology. Rat models represent valuable tools to study the pathophysiology and to develop novel treatments. A major challenge in DED research is detecting multiple biomarkers in a low tear volume sample.

Risk Factors Associated with Severe RSV Infection in Infants: What Is the Role of Viral Co-Infections?

The respiratory syncytial virus (RSV) represents the leading cause of viral lower respiratory tract infections (LRTI) in children worldwide and is associated with significant morbidity and mortality rates. The clinical picture of an RSV infection differs substantially between patients, and the role of viral co-infections is poorly investigated. During two consecutive winter seasons from October 2018 until February 2020, we prospectively included children up to 2 years old presenting with an acute LRTI, both ambulatory and hospitalized.

Persistence Level Reflects Antibiotic Survival of Natural Pseudomonas aeruginosa Isolates in a Murine Lung Infection Model.

Clinicians are increasingly confronted with the limitations of antibiotics to clear bacterial infections in patients. It has long been assumed that only antibiotic resistance plays a pivotal role in this phenomenon. Indeed, the worldwide emergence of antibiotic resistance is considered one of the major health threats of the 21st century.

Acyloxymethyl and alkoxycarbonyloxymethyl prodrugs of a fosmidomycin surrogate as antimalarial and antibacterial agents.

Fosmidomycin is a natural antibiotic with potent IspC (DXR, 1-deoxy-d-xylulose-5-phosphate reductoisomerase) inhibitory activity. This enzyme catalyzes the first committed step of the non-mevalonate isoprenoid biosynthesis pathway, which is essential in most bacteria, including A. baumanii and M.

Antibiotic Tolerance Indicative of Persistence Is Pervasive among Clinical Streptococcus pneumoniae Isolates and Shows Strong Condition Dependence.

Streptococcus pneumoniae is an important human pathogen, being one of the most common causes of community-acquired pneumonia and otitis media. Antibiotic resistance in S. pneumoniae is an emerging problem, as it depletes our arsenal of effective drugs.

Inhibitory Effect on Nitric Oxide Release in LPS-Stimulated Macrophages and Free Radical Scavenging Activity of Jacq. Leaves.

Oxidative stress is an important component of many diseases including cancer, along with inflammatory and neurodegenerative processes. Natural antioxidants have emerged as promising substances to protect the human body against reactive oxygen and nitrogen species. The present study evaluates the inhibition of nitric oxide (NO) production in LPS-stimulated RAW 264.

Design, synthesis and biological evaluation of benzo-[]-imidazo-[2,1-]-thiazole and imidazo-[2,1-]-thiazole carboxamide triazole derivatives as antimycobacterial agents.

In the search for new anti-mycobacterial agents, we revealed the importance of imidazo-[2,1-]-thiazole and benzo-[]-imidazo-[2,1-]-thiazole carboxamide derivatives. We designed, ADMET predicted and synthesized four series of novel imidazo-[2,1-]-thiazole and benzo-[]-imidazo-[2,1-]-thiazole carboxamide analogues in combination with piperazine and various 1,2,3 triazoles. All the synthesized derivatives were characterized by H NMR, C NMR, HPLC and MS spectral analysis and evaluated for antitubercular activity.

Inhibition of Bacterial Adhesion and Biofilm Formation by Seed-Derived Ethanol Extracts from Mill.

The increase in antibiotic resistance demands innovative strategies to combat microorganisms. The current study evaluated the antibacterial and antivirulence effects of ethanol extracts from Persea americana seeds obtained by the Soxhlet (SE) and maceration (MaE) methods. The UHPLC-DAD-QTOF analysis showed mainly the presence of polyphenols and neolignan.