Table 6.6 Dist ributi on of antidiuretic action of neurohyp oph y sial hormo nes in
am phibians. ( From data coll ected by M O REL and l ARD, 1968)
H ormo ne
Antidiu retic
Action
Na ture of th e effect
Anura
Bufo arenarum
Bujo carens
Bu ]» regularls
Bu]» ma rinus
Buf o bufo
Rana pipiens
R ana cate sbelana
Rana tem porarla
Rana esculen ta
X enopus laevis
Mamm al ian neurohypo+
ph ysial ex t ra ct
Vaso pressin,oxytox in
+
Vasop ressin, oxytocin
+
Pituitrin, Pitressin
+
O xytocin
AVT , AVP, LVP, Oxyt,
+
Pitocin, Pituitrin
+
+
Pituitrin
+
H ypoph ysial ext ract s
+
AVT, oxytoc in, fro g neuro+
hyp oph ysial ext ract
O xytoc in , vasopressin
+
+
Piruirr in, Pitressin, AVT
+
+
Ar ginin e-vasotocin
0
Tubular action and
con str iction of afferent
glomerular vessels
Tubular act ion and
glomer ula r effect
glomerular di uretic
effect
Glo merular effect
incr ease wi th large
doses or dec rease
w ith sma ll doses, of
active glomer uli
inhibit ion of wate r
diuresis
Inhibition of salt
diur esis
G lomerul ar and tubul ar
anti diuresis
glomerula r diur etic
effect
Glomerular and
tubular
an tidiuresis
Urodela
A mby stoma ti grinum Arginine-vasotocin
Triturus alpest ris
Ar ginin e-v asotocin
Triturus cristatus
Ar ginine-vasotocin
N ecturus maculosus Ar ginin e-vasotocin
Salam andra maculosa Ar ginine-v asotocin
+
+
+
+
o
Glomerular effect
AVT = arginine-v asotoc in, AVP and LVP = ar ginine or ly sine-vasopressin
Neurohypophysial peptides, when injected, can reduce the urine volume in a
large number of anurans and urodeles (Table 6.6). It is, however, notable that thi s
response may be poor or undetectable in some amphibians, especiall y aquatic form s
like X enopus laev is and Necturus maculosu s. Peptides extracted from either mam175
am phibians. ( From data coll ected by M O REL and l ARD, 1968)
H ormo ne
Antidiu retic
Action
Na ture of th e effect
Anura
Bufo arenarum
Bujo carens
Bu ]» regularls
Bu]» ma rinus
Buf o bufo
Rana pipiens
R ana cate sbelana
Rana tem porarla
Rana esculen ta
X enopus laevis
Mamm al ian neurohypo+
ph ysial ex t ra ct
Vaso pressin,oxytox in
+
Vasop ressin, oxytocin
+
Pituitrin, Pitressin
+
O xytocin
AVT , AVP, LVP, Oxyt,
+
Pitocin, Pituitrin
+
+
Pituitrin
+
H ypoph ysial ext ract s
+
AVT, oxytoc in, fro g neuro+
hyp oph ysial ext ract
O xytoc in , vasopressin
+
+
Piruirr in, Pitressin, AVT
+
+
Ar ginin e-vasotocin
0
Tubular action and
con str iction of afferent
glomerular vessels
Tubular act ion and
glomer ula r effect
glomerular di uretic
effect
Glo merular effect
incr ease wi th large
doses or dec rease
w ith sma ll doses, of
active glomer uli
inhibit ion of wate r
diuresis
Inhibition of salt
diur esis
G lomerul ar and tubul ar
anti diuresis
glomerula r diur etic
effect
Glomerular and
tubular
an tidiuresis
Urodela
A mby stoma ti grinum Arginine-vasotocin
Triturus alpest ris
Ar ginin e-v asotocin
Triturus cristatus
Ar ginine-vasotocin
N ecturus maculosus Ar ginin e-vasotocin
Salam andra maculosa Ar ginine-v asotocin
+
+
+
+
o
Glomerular effect
AVT = arginine-v asotoc in, AVP and LVP = ar ginine or ly sine-vasopressin
Neurohypophysial peptides, when injected, can reduce the urine volume in a
large number of anurans and urodeles (Table 6.6). It is, however, notable that thi s
response may be poor or undetectable in some amphibians, especiall y aquatic form s
like X enopus laev is and Necturus maculosu s. Peptides extracted from either mam175