Water and electrolyte balance in the Japanese eel, Anguilla japonica, with special reference to the role of the corpuscles of Stannius and the ultimobranchial bodies

1970 ◽  
Author(s):  
Kar-po, Veronica Chan
Keyword(s):  
Special Reference ◽  
Anguilla Japonica ◽  
Japanese Eel ◽  
Electrolyte Balance ◽  
Corpuscles Of Stannius ◽  
Water And Electrolyte Balance

The effect of hypophysectomy and prolactin treatment on the osmotic water influx into the isolated gills of the Japanese eel (Anguilla japonica)

1977 ◽  
Vol 55 (5) ◽  
pp. 872-876 ◽  
Author(s):  
Mizuho Ogawa
Keyword(s):  
Fresh Water ◽  
Sea Water ◽  
Anguilla Japonica ◽  
Japanese Eel ◽  
Osmotic Permeability ◽  
Water Influx ◽  
In Vitro Technique ◽  
Osmotic Water

An in vitro technique has been used to measure the osmotic water influx into the isolated gills and the osmotic permeability of the gill surface of the Japanese eel, Anguilla japonica. Hypophysectomy increases both of these measurements. Prolactin injections decrease both osmotic water influx and osmotic permeability to water in both the intact and hypophysectomized eels in fresh water but produce no change in either of these parameters when the fish (either intact or hypophysectomized) are in sea water. The possible role of the pituitary (especially prolactin) in osmoregulation of fishes is discussed and considered in relation to the environmental calcium in sea water.

Changes in the role of the thyroid axis during metamorphosis of the Japanese eel,Anguilla japonica

2014 ◽  
Vol 321 (7) ◽  
pp. 357-364 ◽  
Author(s):  
Ryusuke Sudo ◽  
Akihiro Okamura ◽  
Mari Kuroki ◽  
Katsumi Tsukamoto
Keyword(s):  
Anguilla Japonica ◽  
Japanese Eel ◽  
Thyroid Axis

Dilution acidosis: evidence for a role of intracellular pH in the control of ventilation

1996 ◽  
Vol 80 (5) ◽  
pp. 1804-1810 ◽  
Author(s):  
C. E. Kasserra ◽  
D. R. Jones
Keyword(s):  
Ion Exchange ◽  
Intracellular Ph ◽  
Pekin Duck ◽  
Disulfonic Acid ◽  
Resonance Spectroscopy ◽  
Electrolyte Balance ◽  
Extracellular Acidosis ◽  
Arterial Ph ◽  
Water And Electrolyte Balance

Acute hyperosmolality results in an extracellular dilution acidosis and hypercarbia that does not stimulate ventilatory compensation. The osmotic stress is also associated with shifts in water and electrolyte balance and an increase in intracellular pH. The alkaline intracellular pH was hypothesized to have a role in preventing a normal respiratory response to the extracellular acidosis and hypercarbia. Therefore, this study examined the effect of ion-exchange blockade on intra- and extracellular pH and ventilation during acute hyperosmolality in the Pekin duck (Anas platyrhynchos) by using 31P-nuclear magnetic resonance spectroscopy. Both 4,4'-diisothiocyanostilbene-2,2'-disulfonic acid (DIDS) and amiloride inhibited the development of the intracellular alkalosis that normally develops in muscle during acute hyperosmolality. Instead, exposure to hyperosmotic stress during ion-exchange blockade resulted in a significant acidosis both intracellularly and extracellularly. Arterial pH decreased 0.10 +/- 0.04 pH unit with a sucrose infusion after either blocker, and intracellular pH decreased 0.11 +/- 0.06 and 0.16 +/- 0.04 pH units with a sucrose infusion after DIDS and amiloride, respectively. Ventilation increased 79 +/- 28 and 122 +/- 100%, respectively, during acute hyperosmolality after ion-exchange blockade with either DIDS or amiloride. The results suggest that intracellular pH may play a role in the ventilatory response to acid-base perturbations. The data also indicate that both Cl-/HCO3- and Na+/H+ exchanges are involved in the development of the intracellular alkalosis during hyperosmotically induced extracellular acidosis.

Osmotic and ionic regulation in goldfish following removal of the corpuscles of Stannius or the pituitary gland

1968 ◽  
Vol 46 (4) ◽  
pp. 669-676 ◽  
Author(s):  
Mizuho Ogawa
Keyword(s):  
Angiotensin Ii ◽  
Carassius Auratus ◽  
Urine Osmolality ◽  
Electrolyte Balance ◽  
Ionic Regulation ◽  
Corpuscles Of Stannius ◽  
Blood Electrolytes ◽  
Goldfish Carassius Auratus ◽  
Plasma Electrolytes

The osmolalities of the urine and the plasma as well as the plasma electrolytes were studied in unoperated goldfish, Carassius auratus, sham-operated animals, hypophysectomized animals, and animals from which the corpuscles of Stannius had been removed. Removal of either the pituitary or the corpuscles of Stannius results in loss of blood electrolytes as evidenced by an elevation in urine osmolality and a decline in the plasma electrolytes. Angiotensin II prevents the loss of electrolytes in fish from which the corpuscles of Stannius have been removed but has no effect on the electrolyte balance of the hypophysectomized animals. The possible role of the corpuscles of Stannius is discussed.

Isolation of two types of cDNA encoding growth hormone receptor-like genes in the Japanese eel, Anguilla japonica

2002 ◽  
Vol 68 (sup1) ◽  
pp. 959-960 ◽  
Author(s):  
YUICHI OZAKI ◽  
HARUHISA FUKADA ◽  
YUKINORI KAZETO ◽  
SHINJI ADACHI ◽  
AKIHIKO HARA ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Hormone Receptor ◽  
Growth Hormone Receptor ◽  
Anguilla Japonica ◽  
Japanese Eel
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