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Categories: Biology: Microbiology, Geoscience: Geology

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Biology: Microbiology
Published

Genomic methods aid study of Seattle 2017-2022 Shigella outbreak      (via sciencedaily.com) 

A genomic study of a sustained, multidrug-resistant Shigellosis outbreak in Seattle from 2017 to 2022 enabled scientists to retrace its origin and spread. Additional analysis of the gut pathogen and its transmission patterns helped direct approaches to testing, treatment, and public health responses. The aim of the study was to better understand the community transmission and spread of antimicrobial resistance and to treat these multi-drug resistant infections more effectively.

Biology: Microbiology
Published

Silver nanoparticles show promise in fighting antibiotic-resistant bacteria      (via sciencedaily.com) 

A new study found that small amounts of silver nanoparticles combined with a low dose of a common antibiotic inhibited the growth of resistant bacteria.

Biology: Microbiology
Published

Deer carry SARS-CoV-2 variants that are extinct in humans      (via sciencedaily.com) 

Researchers have found white-tailed deer ­-- the most abundant large mammal in North America -- are harboring SARS-CoV-2 variants that were once widely circulated, but no longer found in humans.

Biology: Microbiology
Published

Diversity of viroids and viroid-like agents      (via sciencedaily.com) 

A team of researchers has developed a computational pipeline to identify and better understand viroids and viroid-like covalently closed circular RNAs (cccRNAs, also referred to as, simply, circular RNAs).

Biology: Microbiology
Published

Warmer climate may drive fungi to be more dangerous to our health      (via sciencedaily.com) 

A new study finds that raised temperatures cause a pathogenic fungus known as Cryptococcus deneoformans to turn its adaptive responses into overdrive. Heat increases its number of genetic changes, some of which might presumably lead to higher heat resistance, and others perhaps toward greater disease-causing potential.

Biology: Microbiology
Published

New live bacterial product for stubborn superbug improves quality of life      (via sciencedaily.com) 

The stubborn superbug Clostridium difficile, or C. diff, may have met its match. A esearcher is reporting the first well-controlled study to demonstrate the effectiveness of a new medicine for patients with the debilitating recurrent infection and disease.

Biology: Microbiology Geoscience: Environmental Issues
Published

Biorefinery uses microbial fuel cell to upcycle resistant plant waste      (via sciencedaily.com) 

Researchers have developed a sustainable, inexpensive two-step process that can upcycle organic carbon waste -- including lignin, a difficult-to-breakdown material that gives plants their structure. By processing waste through a microbe-driven biorefinery, the researchers turned lignin into carbon sources that could be used in high-value, plant-derived pharmaceuticals and antioxidant nutraceuticals as well as carbon-based nanoparticles for drug or chemical delivery.

Biology: Microbiology Chemistry: Organic Chemistry
Published

Catching the wrongdoers in the act: Chemists develop a novel tool to decipher bacterial infections in real time      (via sciencedaily.com)     Original source 

A research team has developed a novel chemical tool to reveal how bacteria adapt to the host environment and control host cells. This tool can be used to investigate bacterial interactions with the host in real-time during an infection, which cannot be easily achieved by other methods.

Biology: Microbiology
Published

Recreating the natural light-harvesting nanorings in photosynthetic bacteria      (via sciencedaily.com) 

Photosynthesis in plants and some bacteria relies on light-harvesting (LH) supramolecules, which come in different structures. So far, these LH molecules have not been artificially prepared. In a recent study, scientists managed to synthesize LH nanorings via self-assembly of chlorophyll derivatives and examined the external conditions that drove their formation. Their findings could help us study artificial photosynthesis and possibly pave the way for novel materials for LH devices like solar cells.

Biology: Microbiology
Published

Marburg vaccine shows promising results in first-in-human study      (via sciencedaily.com) 

A new article shows that an experimental vaccine against Marburg virus (MARV) was safe and induced an immune response in a small, first-in-human clinical trial. The vaccine could someday be an important tool to respond to Marburg virus outbreaks.

Biology: Microbiology
Published

New vaccine platform could ease development, delivery of virus-fighters      (via sciencedaily.com) 

By repurposing one of the human body's natural cargo transports, a research team has developed a vaccine platform that could curb certain engineering challenges, storage demands and side effects of vaccines that combat HIV epidemics and the COVID-19 pandemic.

Biology: Microbiology
Published

Novel cancer therapy extends lives of terminally ill dogs      (via sciencedaily.com) 

Stem cells have been modified to carry a therapy to treat companion animal patients with late-stage cancer, preserving good quality of life and extending their lives, potentially leading to better understanding of cancer treatments and their use in humans.

Biology: Microbiology
Published

Small, convenient mosquito repellent device passes test to protect military personnel      (via sciencedaily.com) 

A device provides protection from mosquitoes for an extended period and requires no heat, electricity or skin contact.

Biology: Botany Biology: Microbiology Ecology: Endangered Species
Published

Characterization of an emergent plant virus      (via sciencedaily.com) 

High throughput sequencing (HTS) data is set to improve our knowledge of Physostegia chlorotic mottle virus biology, epidemiology, and genetic diversity.

Geoscience: Earthquakes Geoscience: Geology Geoscience: Volcanoes
Published

Looking back at the Tonga eruption      (via sciencedaily.com) 

A 'back-projection' technique reveals new details of the volcanic eruption in Tonga that literally shook the world.

Geoscience: Geology Paleontology: Climate Paleontology: General
Published

Mercury helps to detail Earth's most massive extinction event      (via sciencedaily.com) 

Scientists are working to understand the cause and how the events of the LPME unfolded by focusing on mercury from Siberian volcanoes that ended up in sediments in Australia and South Africa.

Energy: Alternative Fuels Geoscience: Geology Space: Astronomy Space: The Solar System
Published

Meteorites reveal likely origin of Earth's volatile chemicals      (via sciencedaily.com) 

By analyzing meteorites, researchers have uncovered the likely far-flung origin of Earth's volatile chemicals, some of which form the building blocks of life.

Biology: Microbiology
Published

New transporter for recycling of bacterial cell wall found      (via sciencedaily.com) 

A transporter which some bacteria use to recycle fragments of their cell wall has been discovered. Researchers found that the transporter controls resistance to certain kinds of cell-wall targeting antibiotics.

Biology: Microbiology
Published

New spray fights infections and antibiotic resistance      (via sciencedaily.com) 

The World Health Organization (WHO) ranks antibiotic resistance as one of the top ten threats to global health. There is therefore a great need for new solutions to tackle resistant bacteria and reduce the use of antibiotics. A group of researchers are now presenting a new spray that can kill even antibiotic-resistant bacteria, and that can be used for wound care and directly on implants and other medical devices.

Biology: Microbiology
Published

Expert analysis refutes claims that humans are colonized by bacteria before birth      (via sciencedaily.com) 

Scientific claims that babies harbor live bacteria while still in the womb are inaccurate, and may have impeded research progress, according to new research/