Blar i forfatter "Hordvik, Ivar"
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Intramuscular vaccination of Atlantic lumpfish (Cyclopterus lumpus L.) induces inflammatory reactions and local immunoglobulin M production at the vaccine administration site
Erkinharju, Toni; Strandskog, Guro; Vågnes, Øyvind; Hordvik, Ivar; Dalmo, Roy Ambli; Seternes, Tore (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-20)Atlantic lumpfish were vaccinated by intramuscular (im) or intraperitoneal (ip) injection with a multivalent oil‐based vaccine, while control fish were injected with phosphate‐buffered saline. Four lumpfish per group were sampled for skin/muscle and head kidney tissue at 0, 2, 7, 21 and 42 days post‐immunization (dpi) for histopathology and immunohistochemistry (IHC). Gene expressions of secretory ... -
Studies on the antibody response and side effects after intramuscular and intraperitoneal injection of Atlantic lumpfish (Cyclopterus lumpus L.) with different oil-based vaccines
Erkinharju, Toni; Lundberg, Martin, Rønbeck; Isdal, Eivind; Hordvik, Ivar; Dalmo, Roy Ambli; Seternes, Tore (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-26)Atlantic lumpfish (<i>Cyclopterus lumpus</i> L.) is used as a biological delousing agent for sea lice (<i>Lepeophtheirus salmonis</i> K.) infestations in Norwegian aquaculture. Here, we present a study on the antibody response and vaccine side effects after intramuscular and intraperitoneal injection of lumpfish with two vaccines. Both vaccines contained bacterial antigens from atypical <i>Aeromonas ... -
The teleost polymeric Ig receptor counterpart in ballan wrasse (Labrus bergylta) differs from pIgR in higher vertebrates
Etayo, Angela; Bjørgen, Håvard; Koppang, Erling Olaf; Hordvik, Ivar (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-13)As mucosal barriers in fish are the main sites where pathogens are encountered, mucosal immunity is crucial to avoid infection in the aquatic environment. In teleost fish, immunoglobulins are present in gut, gill and skin mucus, although not in the same amounts as in higher vertebrates. In mammals, the poly-Ig receptor (pIgR) is synthesized in epithelial cells and mediates the active transport ... -
Vaccination of Atlantic lumpfish (Cyclopterus lumpus L.) at a low temperature leads to a low antibody response against Aeromonas salmonicida
Erkinharju, Toni; Dalmo, Roy Ambli; Vågsnes, Øyvind; Hordvik, Ivar; Seternes, Tore (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-11)We present a study on the effect of water temperature on immunization of Atlantic lumpfish. In total, 360 fish were vaccinated with either 50 μl of an oil‐based injection vaccine (VAX), with Aeromonas salmonicida and Vibrio salmonicida antigens, or PBS. Fish were vaccinated at three different water temperatures, 5°C, 10°C and 15°C, and sorted into six groups (N = 60). Lumpfish were weighed every 3 ...