Histological and histochemical changes in the gills of the yellowtail Seriola quinqueradiata exposed to the Raphidphycean flagellate Chattonella marina

1985 ◽  
Vol 87 (2) ◽  
pp. 193-197 ◽  
Author(s):  
M. Endo ◽  
T. Sakai ◽  
A. Kuroki
Keyword(s):  
Chattonella Marina ◽  
Seriola Quinqueradiata ◽  
Histochemical Changes

Coadministration of citric acid allows oxytetracycline dose reduction in yellowtail Seriola quinqueradiata infected with Vibrio anguillarum

2020 ◽  
Vol 140 ◽  
pp. 25-29
Author(s):  
K Akiyama ◽  
N Hirazawa ◽  
A Hatanaka
Keyword(s):  
Body Weight ◽  
Citric Acid ◽  
Effective Treatment ◽  
Dose Reduction ◽  
Vibrio Anguillarum ◽  
Enhancing Effect ◽  
Bacterial Diseases ◽  
Seriola Quinqueradiata ◽  
Poor Efficacy

Oxytetracycline (OTC) has been commonly used as an effective antibiotic against various fish bacterial diseases, including vibriosis. In this study, the absorption-enhancing effect of citric acid on oral OTC pharmacokinetics and treatment of artificial Vibrio anguillarum infection was evaluated in juvenile yellowtail Seriola quinqueradiata followed by serum OTC concentration analysis. When 25 mg kg-1 body weight (BW) OTC was administered in combination with 1250 mg kg-1 BW citric acid, the serum OTC concentration reached almost the same concentration as that of the group treated with 50 mg kg-1 BW OTC. This coadministration successfully suppressed mortality due to vibriosis similar to the group treated with 50 mg kg-1 BW OTC. Conversely, poor efficacy was observed when only 25 mg kg-1 BW OTC was administered. These results suggest that coadministration of citric acid can be beneficial in reducing the dose of OTC needed for effective treatment, and thus contributes to the goal of reduced use of this antibiotic in aquaculture.

ACUTE ENZYME HISTOCHEMICAL CHANGES IN THE ZONA GLOMERULOSA OF THE RAT ADRENAL CORTEX

1968 ◽  
Vol 59 (3) ◽  
pp. 508-518
Author(s):  
J. D. Elema ◽  
M. J. Hardonk ◽  
Joh, Koudstaal ◽  
A. Arends
Keyword(s):  
Peritoneal Dialysis ◽  
Succinate Dehydrogenase ◽  
Dehydrogenase Activity ◽  
Adrenal Cortex ◽  
Isocitrate Dehydrogenase ◽  
Hydroxysteroid Dehydrogenase ◽  
Zona Glomerulosa ◽  
Acute Changes ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
Histochemical Changes

ABSTRACT Acute changes in glucose-6-phosphate dehydrogenase and isocitrate dehydrogenase activity in the zona glomerulosa of the rat adrenal cortex were induced by peritoneal dialysis with 5 % glucose. Although less clear, the activity of 3β-ol-hydroxysteroid dehydrogenase also seemed to increase as well. No changes were seen in the activity of succinate dehydrogenase. Dialysis with 0.9 % NaCl had no effect on any of the enzymes investigated. The possible significance of these observations is discussed.

Mechanism of superoxide anion generation in the toxic red tide phytoplankton Chattonella marina: possible involvement of NAD(P)H oxidase

2000 ◽  
Vol 1524 (2-3) ◽  
pp. 220-227 ◽  
Author(s):  
Daekyung Kim ◽  
Atsushi Nakamura ◽  
Tarou Okamoto ◽  
Nobukazu Komatsu ◽  
Tatsuya Oda ◽  
...  
Keyword(s):  
Superoxide Anion ◽  
Red Tide ◽  
Chattonella Marina ◽  
Superoxide Anion Generation

scholarly journals Recent Progress in the Study of Peroxiredoxin in the Harmful Algal Bloom Species Chattonella marina

Antioxidants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 162
Author(s):  
Yohei Shimasaki ◽  
Koki Mukai ◽  
Yuki Takai ◽  
Xuchun Qiu ◽  
Yuji Oshima
Keyword(s):  
Oxidative Stress ◽  
Growth Phase ◽  
Critical Role ◽  
High Irradiance ◽  
Growth Potential ◽  
Exponential Growth Phase ◽  
Wild Type ◽  
Chattonella Marina ◽  
Strong Light ◽  
Expression Strain

Peroxiredoxin (Prx) is a relatively recently discovered antioxidant enzyme family that scavenges peroxides and is known to be present in organisms from biological taxa ranging from bacteria to multicellular eukaryotes, including photosynthetic organisms. Although there have been many studies of the Prx family in higher plants, green algae, and cyanobacteria, few studies have concerned raphidophytes and dinoflagellates, which are among the eukaryotic algae that cause harmful algal blooms (HABs). In our proteomic study using 2-D electrophoresis, we found a highly expressed 2-Cys peroxiredoxin (2-CysPrx) in the raphidophyte Chattonella marina var. antiqua, a species that induces mass mortality of aquacultured fish. The abundance of the C. marina 2-CysPrx enzyme was highest in the exponential growth phase, during which photosynthetic activity was high, and it then decreased by about a factor of two during the late stationary growth phase. This pattern suggested that 2-CysPrx is a key enzyme involved in the maintenance of high photosynthesis activity. In addition, the fact that the depression of photosynthesis by excessively high irradiance was more severe in the 2-CysPrx low-expression strain (wild type) than in the normal-expression strain (wild type) of C. marina suggested that 2-CysPrx played a critical role in protecting the cell from oxidative stress caused by exposure to excessively high irradiance. In the field of HAB research, estimates of growth potential have been desired to predict the population dynamics of HABs for mitigating damage to fisheries. Therefore, omics approaches have recently begun to be applied to elucidate the physiology of the growth of HAB species. In this review, we describe the progress we have made using a molecular physiological approach to identify the roles of 2-CysPrx and other antioxidant enzymes in mitigating environmental stress associated with strong light and high temperatures and resultant oxidative stress. We also describe results of a survey of expressed Prx genes and their growth-phase-dependent behavior in C. marina using RNA-seq analysis. Finally, we speculate about the function of these genes and the ecological significance of 2-CysPrx, such as its involvement in circadian rhythms and the toxicity of C. marina to fish.

scholarly journals HISTOCHEMICAL CHANGES ASSOCIATED WITH AGING

1942 ◽  
Vol 143 (1) ◽  
pp. 281-284
Author(s):  
Oliver H. Lowry ◽  
C.M. McCay ◽  
A. Baird Hastings ◽  
Andrea N. Brown
Keyword(s):  
Histochemical Changes

scholarly journals Monitoring the behavior of young bluefin tuna Thunnus orientalis and yellowtail Seriola quinqueradiata in set nets using ultrasonic biotelemetry

2018 ◽  
Vol 84 (1) ◽  
pp. 14-22 ◽  
Author(s):  
KEIICHI UCHIDA ◽  
HIROMICHI OGAWA ◽  
KOHEI HASEGAWA ◽  
YOSHINORI MIYAMOTO ◽  
HIDEKI NORO ◽  
...  
Keyword(s):  
Bluefin Tuna ◽  
Thunnus Orientalis ◽  
Seriola Quinqueradiata

scholarly journals Neuropathological and Histochemical Changes in a Multiple Mitochondrial DNA Deletion Disorder

2000 ◽  
Vol 59 (7) ◽  
pp. 621-627 ◽  
Author(s):  
D. A. Cottrell ◽  
P. G. Ince ◽  
E. L. Blakely ◽  
M. A. Johnson ◽  
P. F. Chinnery ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Mitochondrial Dna Deletion ◽  
Dna Deletion ◽  
Histochemical Changes
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