Results 81 to 90 of about 12,945 (227)
Aquaculture, Fish and Fisheries, Volume 6, Issue 1, February 2026.ABSTRACT Aquaculture is the fastest‐growing sector of animal food production, yet it faces increasing challenges in maintaining fish health and sustainability due to the widespread use of antibiotics and synthetic feed additives. Green tea (Camellia sinensis), a natural source of polyphenols and bioactive compounds, has gained attention as a functional
Nahida Akter +8 more
wiley +1 more source
Activation mechanism of pre-phenoloxidase in lobster and shrimp [PDF]
, 1978 Phenoloxidase in shrimp and lobster is shown to exist in latent form which could be activated by trypsin and by an endogenous enzyme with tryptic activity.
Savagaon, K.A., Sreenivasan, A.
core
Ciência Rural, 2019 : The innate immune system of honeybees mainly consists in antimicrobial peptides, cellular immunity and melanisation. In order to investigate the immune response of honeybees to immune stressors, three stress degrees were tested.
Francesca Millanta +5 more
doaj +1 more source
The Phenoloxidase Activity in Prawn Hemocytes.
Fish Pathology, 1992 1. クルマエビ血液中のフェノールオキシダーゼ (PO) 活性の分布を調べるために, 血漿成分と血球成分のPO活性を測定した。その結果, 血漿ならびに血球成分ともにPO活性が認められたが, とりわけ血球中の活性が高かった。2. クルマエビ血球成分中のPO活性の酵素化学的性状について検討した結果, PO活性の反応至適温度は40℃であり, 熱処理または0.5M以上の条件下において著しい活性の低下がみられた。また, 活性はEDTAにより阻害されたが, EGTAによる阻害性は低く, Caイオン依存性ではなかった。3. PO活性はPMSFやDEDTによって阻害されたことから, 活性の反応系にはセリンプロテアーゼや銅酵素の関与が示唆された。
Masakazu Kondo +2 more
openaire +2 more sources
mLife, Volume 5, Issue 1, Page 51-67, February 2026.Abstract The “superbug” Candida auris has been ranked as a priority fungal pathogen and is becoming a serious threat to public health. However, the underlying mechanisms of real‐world pathogen–host interactions remain elusive, in part due to the lack of powerful immunocompetent animal models.
Jie Li +13 more
wiley +1 more source
Purification and characterization of phenoloxidase from the hemolymph of Hyphantria cunea (Lepidoptera: Arctiidae) [PDF]
Invertebrate Survival Journal, 2012 Phenoloxidase (PO) is a key factor in insect immunity. On invasion of microorganisms and pathogens, prophenoloxidase changes to its active form to PO.
M Ajamhassani +3 more
doaj +1 more source
Effects of Pink Bollworm Resistance to Bacillus thuringiensis on Phenoloxidase Activity and Susceptibility to Entomopathogenic Nematodes [PDF]
, 2009 Widespread planting of crops genetically engineered to produce insecticidal toxins from the bacterium Bacillus thuringiensis (Bt) imposes selection on many key agricultural pests to evolve resistance to Bt.
Carriere, Yves +7 more
core +2 more sources
Purification and properties of phenoloxidase from spinach leaves.
Agricultural and Biological Chemistry, 1989 A phenoloxidase from spinach leaves was extensively purified to homogeneity. The molecular weight of the purified enzyme was 150,000 by gel filtration, and 40,000 by SDS-polyacrylamide gel electrophoresis. The enzyme contained 2 atoms of copper per 150,000 of molecular weight. The optimum pH of the enzyme action is near 6.5.
Yoshiaki Oda +6 more
openaire +2 more sources
The effects of immune challenge on phenoloxidase activity in locust salivary glands in vitro [PDF]
, 2008 Homogenates of salivary glands from Locusta migratoria possess phenoloxidase (PO) activity. This study investigates the activation of prophenoloxidase (PPO) in these glands in vitro. When freshly dissected salivary glands from L. migratoria are incubated
Ashida +14 more
core +1 more source
Insects, 2015 Urbanization has the potential to dramatically affect insect populations worldwide, although its effects on pollinator populations are just beginning to be understood.
R. Holden Appler +2 more
doaj +1 more source