Results 41 to 50 of about 1,174,136 (314)

Anti-Influenza A Viral Butenolide from Streptomyces sp. Smu03 Inhabiting the Intestine of Elephas maximus

open access: yesViruses, 2018
Actinobacteria are a phylum of bacteria known for their potential in producing structurally diversified natural products that are always associated with a broad range of biological activities.
Fangfang Li   +8 more
doaj   +1 more source

Physicochemical Properties of Chitosan from Two Commonly Reared Edible Cricket Species, and Its Application as a Hypolipidemic and Antimicrobial Agent

open access: yesPolysaccharides, 2021
Insect-derived chitin and chitosan have gained interest as alternative sources to that derived from crustaceans; however, little information is available on chitin from the house cricket (Acheta domesticus) and tropical banded cricket (Gryllodes ...
Morgan Malm, Andrea M. Liceaga
doaj   +1 more source

Acyl modifications in bovine, porcine, and equine ghrelins

open access: yesFrontiers in Endocrinology
Ghrelin is a peptide hormone with various important physiological functions. The unique feature of ghrelin is its serine 3 acyl-modification, which is essential for ghrelin activity.
Takanori Ida   +17 more
doaj   +1 more source

Blood Levels of Neuropeptide 26RFa in Relation to Anxiety and Aggressive Behavior in Humans—An Exploratory Study

open access: yesBrain Sciences, 2023
26RFa, also referred to as QRFP, is a hypothalamic neuropeptide mainly known for its role in the regulation of appetite and glucose metabolism. Its possible relevance to emotional regulation is largely unexplored.
Henning Værøy   +5 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS 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

Preparation and Structure Characterization of Iron(II)-Chelating Corn Oligopeptides

open access: yesShipin gongye ke-ji, 2023
Corn oligopeptides and ferrous chloride were used as raw materials to prepare iron (II)-chelating wheat oligopeptides. The chelating effect was evaluated by yield and chelating rate, and the best process was studied by single-factor, response surface ...
Xinxue ZHANG   +5 more
doaj   +1 more source

Biophysical approaches for studying viral entry

open access: yesFEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Novel 14-helical functionalised β3-peptides

open access: yes, 2017
β3-Peptides, (oligomers of β3-amino acids) are among the most widely studied unnatural peptides at present, due to their ability to adopt discrete and stable secondary helical structures. Of the many types of helices formed by β3-peptides, 14-helices are
Gopalan, Romila Devi (3718594)
core   +1 more source

Antimicrobial Peptides and Skin: A Paradigm of Translational Medicine [PDF]

open access: yes, 2012
Antimicrobial peptides (AMPs) are small, cationic, amphiphilic peptides with broad-spectrum microbicidal activity against both bacteria and fungi. In mammals, AMPs form the first line of host defense against infections and generally play an important ...
Schöllmann, C.   +3 more
core   +1 more source

Role of biological rhythms in the performance of physical activity

open access: yesJournal of Physical Fitness and Sports Medicine, 2017
Most organisms display various periodicities. Periodicity has been observed in humans in association with sleep, body temperature and hormone secretion. The molecular mechanisms involved are being elucidated by the investigation of clock genes in mammals.
Takahiro Sato   +2 more
doaj   +1 more source

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