Cell proliferation and hair cell addition in the ear of the goldfish, Carassius auratus

1996 ◽  
Vol 100 (1-2) ◽  
pp. 1-9 ◽  
Author(s):  
Pamela J. Lanford ◽  
Joelle C. Presson ◽  
Arthur N. Popper
1988 ◽  
Vol 66 (3) ◽  
pp. 729-736 ◽  
Author(s):  
A. H. Houston ◽  
A. Murad ◽  
J. D. Gray

Immersion of goldfish, Carassius auratus, in 1 mg∙L−1 phenylhydrazine hydrochloride at 5 °C for 48 h led to reductions of 90–95% in hemoglobin and hematocrit within 10–14 days. Under similar conditions, 96-h exposures prompted heavy mortality. Fewer mortalities occurred after 24-h exposure periods; however, only modest reductions in O2-carrying capacity were seen. All higher concentration (2, 5, 10, 50 mg∙L−1) and temperature (10, 15, 20 °C) combinations led to complete mortality within 12–96 h regardless of exposure period (24, 48, 96 h). Exposure to phenylhydrazine hydrochloride caused decreases in hemoglobin and hematocrit, changes in the abundances of specific hemoglobin isomorphs, and the transient appearance of novel hemoglobin mobilities as well as evidence of osmo- and iono-regulatory dysfunction. Slow warming to 20 °C prompted red cell proliferation and hemoglobin synthesis and restoration of typical hemoglobin isomorph abundances. Incidence of transfer stresses was monitored by reference to differential leucocyte counts. Transfer led to lymphopenia and thrombopenia with neutrophilia and eosinophilia. Warming was accompanied by increases in lymphocyte and thrombocyte counts and reductions in those of monocytes and all granulocytes.


Author(s):  
Waykin Nopanitaya ◽  
Joe W. Grisham ◽  
Johnny L. Carson

An interesting feature of the goldfish liver is the morphology of the hepatic plate, which is always formed by a two-cell layer of hepatocytes. Hepatic plates of the goldfish liver contain an infrequently seen second type of cell, in the centers of plates between two hepatocytes. A TEH study by Yamamoto (1) demonstrated ultrastructural differences between hepatocytes and centrally located cells in hepatic plates; the latter were classified as ductule cells of the biliary system. None of the previous studies clearly showed a three-dimensional organization of the two cell types described. In the present investigation we utilize SEM to elucidate the arrangement of hepatocytes and bile ductular cells in intralobular plates of goldfish liver.Livers from young goldfish (Carassius auratus), about 6-10 cm, fed commercial fish food were used for this study. Hepatic samples were fixed in 4% buffered paraformaldehyde, cut into pieces, fractured, osmicated, CPD, mounted Au-Pd coated, and viewed by SEM at 17-20 kV. Our observations were confined to the ultrastructure of biliary passages within intralobular plates, ductule cells, and hepatocytes.


2001 ◽  
Vol 36 (3-4) ◽  
pp. 195-198 ◽  
Author(s):  
I Paschos ◽  
L Natsis ◽  
C Nathanailides ◽  
I Kagalou ◽  
E Kolettas

2021 ◽  
Vol 66 ◽  
pp. 126758
Author(s):  
Javad Seyedi ◽  
Mohammad Reza Kalbassi ◽  
Milad Esmaeilbeigi ◽  
Mohammad Behzadi Tayemeh ◽  
Jamshid Amiri Moghadam

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