scholarly journals Impacts on the immune system of Cyprinus carpio exposure with a mixed algal extract against Aeromonas hydrophila

2021 ◽  
Author(s):  
Sattanathan Govindharajan ◽  
Tamizhazhagan Vairakannu
Keyword(s):  
Cyprinus Carpio ◽  
Bactericidal Activity ◽  
Aeromonas Hydrophila ◽  
Lysozyme Activity ◽  
Myeloperoxidase Activity ◽  
Immunological Parameters ◽  
Serum Bactericidal Activity ◽  
Algal Extract ◽  
Percentage Survival ◽  
Antiprotease Activity

This study evaluates the influence of mixed algal extract (<i>Chlorella vulgaris</i>, <i>Euglena viridis</i> and <i>Spirulina platensis</i>) on common carp <i>Cyprinus Carpio</i>, which infected infect with bacterial pathogen <i>Aeromonas hydrophila</i>. <i>C. carpio</i> was administered intraperitoneally with various doses such as methanol extract (0, 0,1, 1, 10 and 100 mg/kg). The immunological parameters of fish blood and serum samples (Neutrophil activity, Lysozyme activity, Serum myeloperoxidase intensity, Serum bactericidal activity, and Serum antiprotease activity) were investigated at 7, 14, 21, and 28 days of post-immunization. Fish had been tested by virulent<i> A. hydrophila</i> for 30 days after treatment and 14 days after infection were identified with mortalities. The findings showed that neutrophil levels, lysozyme activity, serum bactericidal activity, myeloperoxidase activity, and serum antiprotease activity significantly enhanced (p<0.05) compared to untreated control. Mixed dietary algae at 1 and 10 mg/kg levels demonstrated slightly (p<0.05) higher relative percentage survival (90 percent) than control against <i>A. hydrophila</i> disease infection. Results indicated that mixed algal extract in <i>C. carpio</i> positively impacts non-specific immune parameters and boosts disease tolerance to <i>A. hydrophila</i> infections.

scholarly journals THE EFFECT OF «ARCUSIT» ON BIOCHEMICAL AND IMMUNOLOGICAL PARAMETERS BLOOD SERA IN SILVER-BLACK FOX (SILVER-BLACK FOX)

2021 ◽  
Vol 247 (3) ◽  
pp. 192-197
Author(s):  
I.I. Okulova ◽  
◽  
I.A. Domsky ◽  
Yu.A. Berezina ◽  
Z.N. Beltyukova ◽  
...  
Keyword(s):  
Experimental Data ◽  
Blood Serum ◽  
Bactericidal Activity ◽  
Lysozyme Activity ◽  
The Body ◽  
Phagocytic Index ◽  
Control Group ◽  
Immunological Parameters ◽  
Nonspecific Resistance ◽  
Experimental Group

The use of «Arkusit» at a dose of 20 μg / kg of body weight indicates a beneficial effect on the factors of nonspecific resistance of the silver-black fox. The concentration of alkaline phosphatase in the blood serum in the experimental group decreased by 1.8 times (P <0.001), the ALT index - by 1.2 (P <0.05). The concentration of glucose in the experimental group increased 2 times (P <0.05) compared with the control group. In animals of the experimental group, the lysozyme activity of blood serum increased 1.3 times (P <0.05), the OPR reaction and the phagocytic index - 1.4 times (P <0.05), the bactericidal activity of blood serum - 1.8 times (P <0.05). «Arcusit» stimulates the synthesis of gamma globulins, increases the opsonophagocytic, bactericidal activity of blood serum. Thus, the analysis of experimental data indicates that the drug «Arcusit» has a pronounced immunostimulating effect, providing the activation of factors of nonspecific resistance of the body of the silver-black fox.

scholarly journals Serum bactericidal activity as indicator of innate immunity in pacu Piaractus mesopotamicus (Holmberg, 1887)

2013 ◽  
Vol 65 (6) ◽  
pp. 1745-1751 ◽  
Author(s):  
J.D. Biller-Takahashi ◽  
L.S. Takahashi ◽  
F. Pilarski ◽  
F.A. Sebastião ◽  
E.C. Urbinati
Keyword(s):  
Immune System ◽  
Immune Responses ◽  
Bactericidal Activity ◽  
Aeromonas Hydrophila ◽  
Activity Assay ◽  
Experimental Conditions ◽  
Piaractus Mesopotamicus ◽  
Colony Forming Unit ◽  
Serum Bactericidal Activity ◽  
Protective Proteins

The immune system of teleost fish has mechanisms responsible for the defense against bacteria through protective proteins in several tissues. The protein action can be evaluated by serum bactericidal activity and this is an important tool to analyze the immune system. Pacu, Piaractus mesopotamicus, is one of the most important fish in national aquaculture. However there is a lack of studies on its immune responses. In order to standardize and assess the accuracy of the serum bactericidal activity assay, fish were briefly challenged with Aeromonas hydrophila and sampled one week after the challenge. The bacterial infection increased the concentration of protective proteins, resulting in a decrease of colony-forming unit values expressed as well as an enhanced serum bactericidal activity. The protocol showed a reliable assay, appropriate to determine the serum bactericidal activity of pacu in the present experimental conditions.

PSXIII-30 Late-Breaking: The change of immune function markers and spectrotype of cytokine causing subclinical and clinical mastitis in the dairy cows

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 378-378
Author(s):  
Konstantin Leshchukov ◽  
Nikolay Klimov ◽  
Konstantin Lobodin ◽  
Olga Pavlenko ◽  
Evgeniy Sleptsov ◽  
...  
Keyword(s):  
Immune Function ◽  
Bactericidal Activity ◽  
Interleukin 2 ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Lysozyme Activity ◽  
Coagulase Negative Staphylococci ◽  
Serum Bactericidal Activity ◽  
Tnf Α ◽  
High Level

Abstract The study aimed to determine the immune function markers of clinically healthy cows and cows with subclinical and clinical mastitis caused by the coagulase-negative staphylococci. The materials were milk and blood of cows (n = 20; first group) had the clinical mastitis caused by S. aureus and S. haemolyticus, another 20 (second group) had the subclinical mastitis caused by S. aureus and S. haemolyticus, another 20 (third group) were clinically health cows. The milk was examinated by a Californian mastitis test. The immune markers of blood were researched by ELISA using Bovine Elisa Kit (Cloud-CloneCorp. HoustonTX, USA) and relevance methods (The guidelines for the assessment and correction of animal immune status, Voronezh, Russia, 2005). It has been found that the blood of cows of the 2d group had a high level of Interleukin- 2 (15.9±0.4 pg/mL), TNF-α (639.2±19.1 pg/mL), CIC (0.128±0.01 g/L), Serum Bactericidal Activity (78.5±1.4 %) compared with 3d group. It was the reducing of Ig level by 19.6% (20.6±0.3g/L) and Lysozyme activity by 28.4% (2.097±0.02 µg/mL) (P &lt; 0,05-0,001). The comparative analysis of immune function markers in the blood of 1st and 3d groups showed the reduction of TNF-α by 23,3%, Ig level by 19,6 %, Lysozyme activity by 32,8%, T- lymphocytes by 27,2%, and the increasing of CIC by 52,3%, Serum Bactericidal Activity by 6,8%, B- lymphocytes by 10,1% (P &lt; 0,05-0,001), Phagocytic activity of leucocytes by 6,4%. Mastitis events caused by the coagulase-negative staphylococci were associated with reducing of cellular and humoral immunity by twice increasing of Interleukin-2 level.

Sign in / Sign up

Export Citation Format

Share Document