Jan 16, 1970 - life. However, the possibility that the formation of new corpora lutes was responsible for extending the length of PSP cannot be ruled out. The.
BIOLOGY
OF REPRODUCTION
3, 3 1-34
(1970)
Prolongation
of
ABUBAKAR The
Worcester
Pseudopregnancy
A. SHAIKH
Foundation
for
AND
Experimental
A
single
injection
of
of
66
14.0
rats
PSP
test
revealed
receiving
order
rats
were
These
was
had
However,
functional cycling
extended (PSP),
by and
hypophyseal tend the 1956). arates
life
rat
is
that of
in the
PSP
corpus
luteum 1956;
be
luteinizing
and
of
2 Present
was
supported
which
for many
address:
duction
and
School,
50
Laboratory
Reproductive Binney
by
Street,
Biology, Boston,
or
13.
PSP,
18
15
hrs
later.
respectively. through
cells
corpora
by the
Day
during
indirectly and
lutes
stimu-
prolongs was
their
responsible
LH
life of the corpus
autotransplanted of the work
has There
in
of LH,
in the
action
or
that
tion
of
donald jection
might,
therefore,
on
ovary
tional
Repro-
corpora
possible PSP rats.
Medical 02115. 31
that
lutea.
luteotrophic
lutea
intravenous
an
5 of
ovarian unpublished a intact
This effect
PSP
rat study of
(Macin-
increases
venous data).
different
has
secre-
that
Day
have of
stimulates
corpora
and the
It
1966).
LH
rat
on
in (Shaikh,
rat
the
presence of other It has been redo maintain the corpora
(Bogdanove,
levels
the
influence
hormones.
by 1966)
LH
of
estrogen of
at.,
may
hypophysectomized a possibility of a dif-
estrogens
estrogen
et
luteum
hypophyses. concerning the
been done is, however,
lutea of the rat also been reported
HD-01785.
Harvard
functional
ported
causes
Human
Mass.
control
5.3,
other
results between
examined
and
gonadotropins
months
(LH)
of
3, and
luteal
new
the
except
9 and
the
ferent
keeps
Autotrans-
USPHS
of
length the
out.
rats.
secretion
regression in hypophysectomized rats sep, 1938: Evans et al., 1941; Desclin, 9), it is logical to assume that the increase study
on
prolactin
bearing Much
also ex(Everett,
ii
1 This
average
PSP,
be due to a lack of a luteolytic effect of LH. Rothchild (1965) has demonstrated the luteolytic effect of LH in hypophysectomized rats
uninterrupted
hormone
an
5
in the
ltation also causes the hypophysis to lose *bihity to secrete both FSH and LH (Ev1956; Nikitovitch-Winer and Everett,
). Since
showed of
and
animals
in
autotranspiantation sepfrom its hypothalamic
1960).
or
16.3,
be
luteum
functional
control
a total
can
will
Rothchild,
14.5,
12
ovulation
1.8,
of
affects ruled
Day induce
7,
of
17.8,
The
or
in
luteum but
(LtH),
5,
17.2,
analysis
or
action
intravenously
(p
