Bioactive Compounds Isolated from a Marine Sponge Selectively Inhibit .

Background/objectives: is the third most common sexually transmitted infection (STI), which may become untreatable soon if resistance continues to drastically increase. Due to increases in resistance to recommended antibiotics, alternative sources of novel compounds to combat this threat are being explored. Interestingly, marine sponges have proven to produce a plethora of bioactive compounds that display anticancer, antiviral, antifungal, and antibacterial activity.

Transcriptomic Evaluation of a Stress Vulnerability Network Using Single-Cell RNA Sequencing in Mouse Prefrontal Cortex.

Background: Increased vulnerability to stress is a major risk factor for several mood disorders, including major depressive disorder. Although cellular and molecular mechanisms associated with depressive behaviors following stress have been identified, little is known about the mechanisms that confer the vulnerability that predisposes individuals to future damage from chronic stress.

Methods: We used multisite in vivo neurophysiology in freely behaving male and female C57BL/6 mice (n = 12) to measure electrical brain network activity previously identified as indicating a latent stress vulnerability brain state.

Persistence of 2,4,6-triamino-1,3,5-trinitrobenzene in the environment.

2,4,6-triamino-1,3,5-trinitrobenzene (TATB) is an Insensitive High Explosive (IHE) that is increasingly being used as a safer alternative to traditional energetic materials. However, the high thermal stability of TATB poses challenges for its disposal, particularly through existing open burning methods and its ability to remain in the environment for long period of time. Therefore, this study investigated the persistence of TATB in the environment by conducting small-scale experiments which were designed to examine the resistance of TATB to open burning and to assess unburnt residues.

Prenylated Benzophenones from Reduced Nematode Growth and Chemotaxis.

Biopesticides are generally considered a safer and more environmentally friendly alternative to conventional pesticides. Plant metabolites display a range of pest specific activity ranging from antimicrobial to larvicidal and nematocidal. We herein describe the evaluation of a Guyanese collection of (Clusiaceae) for anthelmintic activity.

Antigonococcal Activity of (+)-Medicarpin.

Antibiotics are the primary drugs for combating infections, but with evolving antibiotic resistance of this bacterium, new druggable molecules are needed to stem the tide of this impending public health crisis. Propolis has long been recognized for its antimicrobial properties, being composed of secondary metabolites with antibacterial potential. We herein describe the evaluation of a Jamaican multifloral propolis for antibacterial activity against The bioassay-guided evaluation of the ethyl acetate extract yielded (+)-medicarpin (), whose final structure was elucidated based on spectral analysis and comparison with the known metabolites.