scholarly journals Development of diagnostic assays for differentiation of atypical Aeromonas salmonicida vapA type V and type VI in ballan wrasse ( Labrus bergylta , Ascanius)

2021 ◽  
Author(s):  
Athina Papadopoulou ◽  
Andrew Davie ◽  
Sean J. Monaghan ◽  
Herve Migaud ◽  
Alexandra Adams
Keyword(s):  
Aeromonas Salmonicida ◽  
Diagnostic Assays ◽  
Labrus Bergylta ◽  
Type V

scholarly journals Atypical Aeromonas salmonicida vapA type V and Vibrio spp. are predominant bacteria recovered from ballan wrasse Labrus bergylta in Scotland

2020 ◽  
Vol 140 ◽  
pp. 47-54 ◽  
Author(s):  
A Papadopoulou ◽  
T Wallis ◽  
JG Ramirez-Paredes ◽  
SJ Monaghan ◽  
A Davie ◽  
...  
Keyword(s):  
Bacterial Species ◽  
Skin Lesions ◽  
Aeromonas Salmonicida ◽  
Sequencing Analysis ◽  
Bacterial Isolates ◽  
Positive Individual ◽  
Labrus Bergylta ◽  
Type V ◽  
First Time ◽  
Vibrio Spp

Healthy and/or moribund farmed and wild ballan wrasse Labrus bergylta (>0.5 to 900 g) were sampled from hatcheries (n = 2) and Atlantic salmon Salmo salar cage sites (n = 8) in Scotland between February 2016 and October 2018. Less than half of the sampled individuals (n = 43; 32.3%) had been vaccinated (autogenous polyvalent vaccine; dip and/or injection) against atypical furunculosis (type V and VI), while 20 (15.0%) fish were not vaccinated, and the rest (70 individuals, 52.7%) were of unknown vaccination status. Swab samples from skin lesions, gill, liver, spleen and kidney were inoculated onto a variety of bacteriological agar plates, and bacteriology identification and sequencing analysis was performed on significant bacterial colonies. Atypical Aeromonas salmonicida (aAs) vapA type V was the predominant bacterial species (70/215 bacterial isolates, 32.5% of bacterial samples; 43/117 positive individual fish, 36.8%) isolated in this survey followed by Vibrio species, which were the most geographically prevalent bacteria. Photobacterium indicum/profundum was also isolated from L. bergylta for the first time during this study. The collection of these bacterial isolates provides useful information for disease management. Identifying the aAs isolates involved in disease in ballan wrasse could provide vital information for improving/updating existing autogenous vaccines.

scholarly journals A commercial autogenous injection vaccine protects ballan wrasse (Labrus bergylta, Ascanius) against Aeromonas salmonicida vapA type V

2020 ◽  
Author(s):  
J. Gustavo Ramirez-Paredes ◽  
D. Verner-Jeffreys ◽  
A. Papadopoulou ◽  
S. J Monaghan ◽  
L. Smith ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Clinical Signs ◽  
Aeromonas Salmonicida ◽  
Vibrio Splendidus ◽  
Degree Days ◽  
Experimental Proof ◽  
Labrus Bergylta ◽  
Type V ◽  
Partial Genome ◽  
Autogenous Vaccine

ABSTRACTAtypical Aeromonas salmonicida (aAs) and Vibrionaceae related species are bacteria routinely recovered from diseased ballan wrasse used as cleaner fish in Atlantic salmon farming. Autogenous multivalent vaccines formulated from these microorganisms are widely used by the industry to protect farmed wrasse despite limited experimental proof that they are primary pathogens. In this study, the components of a commercial multivalent injection wrasse vaccine were tested for infectivity, pathogenicity and virulence via intra peritoneal injection at pre-deployment size (25-50g) and the efficacy of the vaccine for protection against aAs assessed. Injection with 3.5×109, 8×109 1.8×109 and 5×109 cfu/fish of Vibrio splendidus, V. ichthyoenteri, Aliivibrio logeii and A. salmonicida, respectively, did not cause significant mortalities, lesions or clinical signs after a period of 14 days. IP injection with both aAs and Photobacterium indicum successfully reproduced the clinical signs and internal lesions observed during natural outbreaks of the disease. Differences in virulence (LD50 at day 8-post infection of 3.6×106 cfu/fish and 1.6×107 cfu/fish) were observed for two aAs vapA type V isolates. In addition, the LD50 for Photobacterium indicum was 2.2×107 cfu/fish. The autogenous vaccine was highly protective against the two aAs vapA type V isolates after 700-degree days of immunisation. The RPSFINAL values for the first isolate were 95 and 91% at 1×106 cfu/fish and 1×107 cfu/fish, respectively, and 79% at 1×107 cfu/fish for the second isolate tested. In addition, significantly higher anti aAs seral antibodies (IgM), were detected by ELISA in vaccinated fish in contrast with control (mock vaccinated) fish. These results suggest wrasse can be effectively immunised and protected against aAs infection by injection with oil adjuvanted vaccines prepared with inactivated homologous isolates. Further work should assess the efficacy of vaccination against other isolates that have proven to be pathogenic such as aAs type VI and Photobacterium indicum and explore the feasibility of immersion vaccination. In addition, a full characterisation of aAs isolates within the same vapA types should be performed as differences in virulence between vapA type V isolates were observed and partial genome analysis indicated small but potentially important genomic differences in these isolates.

scholarly journals A commercial autogenous injection vaccine protects ballan wrasse (Labrus bergylta, Ascanius) against Aeromonas salmonicida vapA type V

2020 ◽  
Vol 107 ◽  
pp. 43-53 ◽  
Author(s):  
J.G. Ramirez-Paredes ◽  
D.W. Verner-Jeffreys ◽  
A. Papadopoulou ◽  
S.J. Monaghan ◽  
L. Smith ◽  
...  
Keyword(s):  
Aeromonas Salmonicida ◽  
Labrus Bergylta ◽  
Type V

scholarly journals Novel atypical Aeromonas salmonicida bath challenge model for juvenile ballan wrasse ( Labrus bergylta, Ascanius)

2020 ◽  
Author(s):  
Athina Papadopoulou ◽  
Kathryn Garvey ◽  
Tom Hill ◽  
Jose G. Ramirez‐Paredes ◽  
Sean J. Monaghan ◽  
...  
Keyword(s):  
Aeromonas Salmonicida ◽  
Labrus Bergylta ◽  
Bath Challenge

The diagnosis of metabolic storage disease in skin biopsies (a light-, electronmicroscopic, and analytical study)

1978 ◽  
Vol 36 (2) ◽  
pp. 648-649
Author(s):  
W. Jurecka ◽  
W. Gebhart ◽  
H. Lassmann
Keyword(s):  
Storage Disease ◽  
Hunter Syndrome ◽  
Histochemical Demonstration ◽  
Sweat Glands ◽  
Type I ◽  
Storage Material ◽  
Scheie Syndrome ◽  
Storage Products ◽  
Skin Biopsies ◽  
Type V

Diagnosis of metabolic storage disease can be established by the determination of enzymes or storage material in blood, urine, or several tissues or by clinical parameters. Identification of the accumulated storage products is possible by biochemical analysis of isolated material, by histochemical demonstration in sections, or by ultrastructural demonstration of typical inclusion bodies. In order to determine the significance of such inclusions in human skin biopsies several types of metabolic storage disease were investigated. The following results were obtained.In MPS type I (Pfaundler-Hurler-Syndrome), type II (Hunter-Syndrome), and type V (Ullrich-Scheie-Syndrome) mainly “empty” vacuoles were found in skin fibroblasts, in Schwann cells, keratinocytes and macrophages (Dorfmann and Matalon 1972). In addition, prominent vacuolisation was found in eccrine sweat glands. The storage material could be preserved in part by fixation with cetylpyridiniumchloride and was also present within fibroblasts grown in tissue culture.

Collagen fibrillogenesis in vitro: interaction of types I and V collagen

1986 ◽  
Vol 44 ◽  
pp. 210-211
Author(s):  
Arthur J. Wasserman ◽  
Kathy C. Kloos ◽  
David E. Birk
Keyword(s):  
Type I Collagen ◽  
Corneal Stroma ◽  
Minor Component ◽  
Homogeneous Distribution ◽  
Type I ◽  
Type V Collagen ◽  
Fibril Morphology ◽  
Type V ◽  
In Vitro Interaction

Type I collagen is the predominant collagen in the cornea with type V collagen being a quantitatively minor component. However, the content of type V collagen (10-20%) in the cornea is high when compared to other tissues containing predominantly type I collagen. The corneal stroma has a homogeneous distribution of these two collagens, however, immunochemical localization of type V collagen requires the disruption of type I collagen structure. This indicates that these collagens may be arranged as heterpolymeric fibrils. This arrangement may be responsible for the control of fibril diameter necessary for corneal transparency. The purpose of this work is to study the in vitro assembly of collagen type V and to determine whether the interactions of these collagens influence fibril morphology.

The distribution and density of ciliary tufts on the siphons of Anodonta cygnea (Mollusca: Bivalvia)

1990 ◽  
Vol 48 (3) ◽  
pp. 518-519
Author(s):  
Wen-lung Wu
Keyword(s):  
Osmium Tetroxide ◽  
Internal Surface ◽  
Mechanical Stimuli ◽  
Type Ii ◽  
Sensory Receptors ◽  
Anodonta Cygnea ◽  
Type Iv ◽  
Sem Study ◽  
Inhalant Siphon ◽  
Type V

The mantle of bivalves has come entirely to enclose the laterally compressed body and the mantle margin has assumed a variety of functions, one of the pricipal ones being sensory. Ciliary tufts, which are probably sensory, have been reported from the mantle and siphons of several bivalves1∽4. Certain regions of the mantle margin are likely to be more or less, sensitive to certain stimuli than others. The inhalant siphon is likely to be particularly sensitive to both chemical and mechanical stimuli, whereas the exhalant siphon will be less sensitive to both. The distribution and density of putative sensory receptors on the in-and ex-halant siphon is compared in this paper.The excised siphons were fixed in glutaraldehyde and osmium tetroxide, the whole procedure of SEM study is recorded in Wu's thesis.Type II cilia cover the tips of tentacles, 6.13um. Type IV and type V cilia are found on the surface of tentacles. Type IV cilia are occasionally present at the tips of tentacles, 8 um long. They are the commonest type on the surface of tentacles. Type VI cilia occor in the internal surface of the inhalant siphon, but are not found on the surface of tentacles, 6.7-10um long.

Type V Bekesy Pattern: Interpretation and Clinical Utility

1967 ◽  
Vol 10 (4) ◽  
pp. 733-744 ◽  
Author(s):  
William F. Rintelmann ◽  
Earl R. Harford
Keyword(s):  
Clinical Utility ◽  
The Past ◽  
Type V ◽  
Clinical Cases

Recent studies indicate there is some disagreement concerning the interpretation and clinical utility of the Type V Bekesy pattern. Bekesy tracings obtained over the past six years from a sample of clinical cases were analyzed and a definition was established for the Type V pattern. This definition was applied to Bekesy tracings obtained from normal listeners, hypoacusics, and pseudohypoacusics. The Type V pattern was found frequently among pseudohypoacusics and only rarely among other individuals.

Increased Activity of Vitamin K-Dependent Clotting Factors in Human Hyperlipoproteinaemia – Association with Cholesterol and Triglyceride Levels

1977 ◽  
Vol 38 (02) ◽  
pp. 0465-0474 ◽  
Author(s):  
M Constantino ◽  
C Merskey ◽  
D. J Kudzma ◽  
M. B Zucker
Keyword(s):  
Vitamin K ◽  
Plasma Lipids ◽  
Coagulation Factors ◽  
Clotting Factor ◽  
Factor X ◽  
Clotting Factors ◽  
Blood Coagulation Factors ◽  
Cholesterol Levels ◽  
Type V ◽  
Increased Activity

SummaryLevels of blood coagulation factors, cholesterol and triglyceride were measured in human plasma. Prothrombin was significantly elevated in type Ha hyperlipidaemia; prothrombin and factors VII, IX and X in type lib; and prothrombin and factors VII and IX in type V. Multiple regression analysis showed significant correlation between the levels of these plasma lipids and the vitamin K-dependent clotting factors (prothrombin, factors VII, IX and X). Higher cholesterol levels were associated with higher levels of prothrombin and factor X while higher triglyceride levels were associated with higher levels of these as well as factors VII and IX. Prothrombin showed a significant cholesterol-triglyceride interaction in that higher cholesterol levels were associated with higher prothrombin levels at all levels of triglyceride, with the most marked effects in subjects with higher triglyceride levels. Higher prothrombin levels were noted in subjects with high or moderately elevated (but not low) cholesterol levels. Ultracentrifugation of plasma in a density of 1.21 showed activity for prothrombin and factors VII and X only in the lipoprotein-free subnatant fraction. Thus, a true increase in clotting factor protein was probably present. The significance of the correlation between levels of vitamin K-dependent clotting factors and plasma lipids remains to be determined.

Sign in / Sign up

Export Citation Format

Share Document