392
103 9s
rn
E
8D. HAROLD COPP
c
X \ *x-x-x7 J
I
1
I
i
- 2
0
+ 5
1 0
Time (hours)
Fig. 7. Effect of injection of 10 and 50 mU of a porcine calcitonin preparation
into the eel, Anguilla anguilla. From data of Chan ( 1969).
when hog calcitonin was injected into the teleost Fundulus heteroclitw.
It may be significant that the bone in this fish is acellular and incapable
of normal bone resorption. On the other hand, Louw et u2. (1967) did
obtain a significant lowering of plasma Ca and P when hog calcitonin was
injected into the catfish, Zctulurus m e h . Chan (1969) also reported a
hypocalcemic response in the eel, Anguillu unguilla, as shown in Fig. 7.
Both of these fish have cellular bone. Chan also observed that removal
of the ultimobranchial glands in Anguillu juponicu resulted in a significant
increase in plasma calcium 4 weeks after the operation. The results are
Table IV
Effect of Removal of the Ultimobranchial Glands and Corpuscles of
Stannius in the Eel, Anguilla japonicaa
Difference
Time after
from
operation Plasma Cab sham-operated
Treatment
n
(weeks)
(mg %)
group
t c
p c
-
_
-
Sham operated
7
2 4
13.6 r t 0 . 3
Ultimobranchialectomized 6
4
15.7 5 0 . 5
2 . 1 k 0 . 5 4 . 0 <0.01
Stanniectomized
6
2
30.4 f 3 . 8
16.9 k 3 . 5 4 . 8 <0.01
Stanniectomized
6
4
18.9 f 2 . 4
5 . 3 L-2.2 2 . 4 <0.05
(1 Data from Chan (1969).
c Here, t is the test ratio in Fisher’s student “t” test and p is the probability that the
Plasma values are averages f standard error.
difference results from change.
103 9s
rn
E
8D. HAROLD COPP
c
X \ *x-x-x7 J
I
1
I
i
- 2
0
+ 5
1 0
Time (hours)
Fig. 7. Effect of injection of 10 and 50 mU of a porcine calcitonin preparation
into the eel, Anguilla anguilla. From data of Chan ( 1969).
when hog calcitonin was injected into the teleost Fundulus heteroclitw.
It may be significant that the bone in this fish is acellular and incapable
of normal bone resorption. On the other hand, Louw et u2. (1967) did
obtain a significant lowering of plasma Ca and P when hog calcitonin was
injected into the catfish, Zctulurus m e h . Chan (1969) also reported a
hypocalcemic response in the eel, Anguillu unguilla, as shown in Fig. 7.
Both of these fish have cellular bone. Chan also observed that removal
of the ultimobranchial glands in Anguillu juponicu resulted in a significant
increase in plasma calcium 4 weeks after the operation. The results are
Table IV
Effect of Removal of the Ultimobranchial Glands and Corpuscles of
Stannius in the Eel, Anguilla japonicaa
Difference
Time after
from
operation Plasma Cab sham-operated
Treatment
n
(weeks)
(mg %)
group
t c
p c
-
_
-
Sham operated
7
2 4
13.6 r t 0 . 3
Ultimobranchialectomized 6
4
15.7 5 0 . 5
2 . 1 k 0 . 5 4 . 0 <0.01
Stanniectomized
6
2
30.4 f 3 . 8
16.9 k 3 . 5 4 . 8 <0.01
Stanniectomized
6
4
18.9 f 2 . 4
5 . 3 L-2.2 2 . 4 <0.05
(1 Data from Chan (1969).
c Here, t is the test ratio in Fisher’s student “t” test and p is the probability that the
Plasma values are averages f standard error.
difference results from change.