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Owen
Harper
Dr waleed tawfik
Ass.lecturer OB &Gyn
Benha university
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
 What is
 Does it stimulate reproductive
Human release
 Is it helpful in IVF
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
 Kisspeptins are a family of proteins that are
essential for fertility.
 The first gene member of the family was
discovered in 1996 (KISS 1) by a group working
in Hershey, Pennsylvania. It is named after the
citys chocolate Kisses, which are made in
Hershey.
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
 Kisspeptin is produced from
the hypothalamus and causes a chain reaction
which leads to production of neurotransmitters
from the pituitary gland. The neurotransmitter
signals lead to the release of other hormones
(luteinising hormone and follicle stimulating
hormone) into the blood. These act
on testes andovaries to produce the sex
hormones testosterone and oestradiol, which
cause the physical and emotional changes that
are well recognised during puberty.
Dhillo et al .,2005
16/4/2015waleed tawfik,benha university
 LH FSH
Estrogen /
testesterone
Kisspeptin/GPR54
hypothalmus
Ant. pitutary
gonads
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
HCG trigger
FSH stimulation
mature
immature
ovary
Excessive
stimulation
OHSS
16/4/2015waleed tawfik,benha university
Pleural effusion
Ascites
Renal failure
16/4/2015waleed tawfik,benha university
 Ovarian hyperstimulation syndrome (OHSS) is
a major medical problem.
 It can be fatal in severe cases and it occurs in
women undergoing IVF treatment who are
otherwise very healthy.
 We really need more effective natural triggers
for egg maturation during IVF treatment
16/4/2015waleed tawfik,benha university
GnRh
hypothalamus
kisspeptin
GnRH agonist
Ant pitutary
ovary HCGLH
receptor
LH FSH
16/4/2015waleed tawfik,benha university
Kisspeptin is a novel
physiological trigger
for inducing oocyte
maturation in IVF
therapy
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
rFSH
GnRH
ant
rFSH
GnRH
ant
16/4/2015waleed tawfik,benha university
53 patients
1.6/3.2 nmol/kg
N=(5)
6.4nmol/kg
N=(24)
12.8 nmol/kg
N=(24)
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university
 We are in front of a new revolution in
human reproduction understanding.
 Kisspeptin can be used as a novel
physiological trigger for egg
maturation in IVF therapy.
 Future studies will assess efficacy in
women at high risk of OHSS.
16/4/2015waleed tawfik,benha university
16/4/2015waleed tawfik,benha university

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