Results 81 to 90 of about 39,443 (213)

Stimuli‐Responsive Crosslinked Chitosan/PVP/PEG Hydrogel Networks for Targeted Drug Delivery and Antimicrobial Performance

Analytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT In this study, a unique pH‐sensitive PEG/C/PVA hydrogel based on chitosan (C), polyvinyl propylene (PVP) and polyethylenglycol (PEG) crosslinked with tetraethyl orthosilicate (TEOS) was fabricated. This PEG/C/PVA hydrogel was designed to deliver different drugs with distinct release profiles, including diclofenac sodium and ciprofloxacin, and ...
Danial Mazhar, Sumra Afzal, Safia Hassan, Zahid Imran, Shabana Mehreen   +4 more
wiley   +1 more source

Unveiling the significance of prokaryotic composition from ferromanganese crusts regarding the interlink between cobalt and vitamin B12 in deep-sea ecosystems

Frontiers in Microbiology
The intricate relationship between prokaryotic vitamin B12 (cobalamin) producers and metazoans in deep-sea ecosystems, particularly within ferromanganese crusts and polymetallic nodules, is critical for understanding oceanic biogeochemical cycling of ...
Lilia Montoya, Elva Escobar-Briones
doaj   +1 more source

Early‐life Giardia infection and behavioural dysregulation in two dogs: A case‐based exploration of the gut microbiome–brain axis

Veterinary Record Case Reports, Volume 14, Issue 2, May 2026.
Abstract This case report describes two dogs exhibiting severe behavioural problems, both diagnosed with early‐life giardiasis and raised in environments lacking adequate maternal care and socialisation. Both dogs experienced chronic gastrointestinal and dermatological issues, as well as prolonged early‐life stress, which likely contributed to ...
Daniëlle Hartman, Claudia M. Vinke, Silvia M. A. Gardeweg, Ineke R. van Herwijnen   +3 more
wiley   +1 more source

Genomic variations associated with attenuation in Mycobacterium avium subsp paratuberculosis vaccine strains [PDF]

, 2013
BACKGROUND: Mycobacterium avium subspecies paratuberculosis (MAP) whole cell vaccines have been widely used tools in the control of Johne's disease in animals despite being unable to provide complete protection. Current vaccine strains derive from stocks
Bull, TJ, Greene, M, Linedale, R, McKendrick, IJ, Sales, J, Schock, A, Sharp, JM, Stevenson, K   +7 more
core   +1 more source

Performance and Health Status of Juvenile Largemouth Bass (Micropterus nigricans) Fed Inclusions of Enzyme‐Treated and Low‐Oligosaccharide Soy Proteins

Aquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
ABSTRACT Plant‐based proteins, such as soybean meal (SBM), have shown promising results in cultured species but also present challenges due to their nutrient composition and inherent antinutritional factors. This study investigated how the replacement of solvent‐extracted SBM with low oligosaccharide soybean meal (LSBM) or enzyme‐treated soybean meal ...
Jamison L. Semla, Chia‐Tsen Chiang, Trinh H. V. Ngo, D. Allen Davis, Ian A. E. Butts, Alvin C. Camus, Benjamin R. LaFrentz, Timothy J. Bruce   +7 more
wiley   +1 more source

Shedding light on cobalamin photodegradation in the ocean

Limnology and Oceanography Letters
Cobalamin, vitamin B12, is an important micronutrient that has been investigated for decades in the marine context because it is required for phytoplankton growth.
Catherine C. Bannon, Elizabeth M. Mudge, Erin M. Bertrand   +2 more
doaj   +1 more source

HPLC‐Orbitrap‐MS for the Determination of B‐Vitamins in Fruit Juices and Food Supplements

Journal of Mass Spectrometry, Volume 61, Issue 4, April 2026.
ABSTRACT Accurate assay of vitamins in foods is a considerable analytical challenge due to the chemical complexity of matrices and molecular structures. Orbitrap MS technology coupled with liquid chromatography through electrospray ionization source (HPLC‐ESI‐MS) was applied for the simultaneous determination of seven B‐vitamins (thiamin, riboflavin ...
Lucia Bartella, Fabio Mazzotti, Ilaria Santoro, Leonardo Di Donna   +3 more
wiley   +1 more source

Investigating the origins of B12 biosynthesis in the most ancient roots of the tree of life [PDF]

, 2015
Vitamin B12, also known as B12 or cobalamin, is a vital nutrient required across all branches of life, but the ability to synthesize this complex molecule de novo is limited to only a few archaea and bacteria.
Alicea, Edil, Bibis, Stergios S., Celone, Veronica, Jutla, Tripta, Petrus, Amanda K., Swithers, Kristen S.   +5 more
core  

Electroactive Biodegradable Nerve Conduits Based on Alginate–Gelatine Polymer Matrix Modified With Inorganic Nanoparticles

Natural Sciences, Volume 6, Issue 2, April 2026.
The effects of ZnO, fullerene C60 and polyaniline (PANI) nanoparticles in hybrid nerve conduits are explored. The composites show enhanced electrical conductivity, permeability to physiological fluids and mechanical stability. The biocompatibility of composites is confirmed by in vivo and in vitro studies.
Liudmyla Sukhodub, Mariia Kumeda, Oleksandr Tsyndrenko, Natalia Bozhko, Liudmyla Vovchenko, Volodymyr Prokopiuk, Oleksander Petrenko, Leonid Sukhodub   +7 more
wiley   +1 more source

A cobalt concentration sensitive Btu-like system facilitates cobalamin uptake in Anabaena sp. PCC 7120

Microbial Cell
Metal homeostasis is central to all forms of life, as metals are es-sential micronutrients with toxic effects at elevated levels. Macromolecular machines facilitate metal uptake into the cells and their intracellular level is regulated by multiple means,
Julia Graf, Leonard Fresenborg, Hans-Michael Seitz, Rafael Pernil, Enrico Schleiff   +4 more
doaj   +1 more source