Results 61 to 70 of about 2,718,963 (248)
Complete nitrification by Nitrospira bacteria
Nature, 2015 Nitrification, the oxidation of ammonia via nitrite to nitrate, has always been considered to be a two-step process catalysed by chemolithoautotrophic microorganisms oxidizing either ammonia or nitrite. No known nitrifier carries out both steps, although
H. Daims +15 more
semanticscholar +1 more source
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Boletim do Instituto de Pesca, 2018 Flavobacterium columnare é uma bactéria cosmopolita, agente etiológico da columnariose, considerada um dos maiores problemas na aquicultura brasileira, provocando elevadas taxas de mortalidade e grande prejuízo econômico. Qualidade de água inadequada,
Fernanda de Alexandre SEBASTIÃO +2 more
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Botulismo em cão sem raça definida - relato de caso
Medicina Veterinária, 2020 O botulismo é uma intoxicação causada pela toxina do bacilo Clostridium botulinum, encontrado frequentemente no solo. Há oito tipos de toxinas (A até H), onde a toxina do tipo C é a que mais acomete os caninos.
Saulo Romero Felix Gonçalves +3 more
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Revista Brasileira de Plantas Medicinais, 2012 The effects of thymol and carvacrol and the essential oil of Lippia gracilis on caulinary shoots of heliconia were evaluated. After disinfection, the shoots were inoculated into MS medium and subjected to the treatments with 420 µL L-1 of essential oil ...
C.C. Albuquerque +5 more
doaj +1 more source
Mechanisms of IgE‐mediated food allergy and the role of allergen‐specific B cells
FEBS Letters, EarlyView.Food allergy arises when allergen‐specific B cells preferentially produce immunoglobulin E (IgE) antibodies against harmless foods. This article explains the mechanisms driving IgE‐mediated reactions, highlights the central role of these B cells, and discusses how natural tolerance (NT) and oral immunotherapy (OIT) can reshape allergic immune responses.
Juan‐Felipe López +2 more
wiley +1 more source
Revista Brasileira de Zootecnia, 2006 Foram estudados os efeitos in vitro dos inibidores monensina e própolis sobre a fermentação ruminal de aminoácidos. Utilizou-se líquido ruminal de um novilho em pastejo, acrescentado de solução de tripticase, em três tratamentos (controle, monensina e ...
Juliana Silva de Oliveira +4 more
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GABA Modulating Bacteria of the Human Gut Microbiota
Nature Microbiology, 2018 The gut microbiota affects many important host functions, including the immune response and the nervous system1. However, while substantial progress has been made in growing diverse microorganisms of the microbiota2, 23–65% of species residing in the ...
Philip Strandwitz +18 more
semanticscholar +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Biological treatment of drippers clogged by the use of treated domestic wastewater
Revista Brasileira de Engenharia Agrícola e AmbientalThis study aimed to recover the flow rate of clogged drippers with different doses and permanence times of the product MaxBio. The experiment was conducted in a completely randomized design in split-split-plot scheme, where the plots corresponded to ...
Danniely O. Costa +5 more
doaj +1 more source