Polycystic
ovary syndrome – A clinical and public
health problem affecting up to one in five women of reproductive age .
Basics:--Polycystic ovary syndrome
is a frustrating experience for
women often complex for managing
clinicians and is a scientific
challenge for researchers , PCOS is a complex condition with psychological reproductive and metabolic manifestations that impacts on health across the lifespan PCOS is
one of the most common hormonal
disorders affecting women . it has
multiple components - reproductive metabolic and cardiovascular – with health
implications for the patient’s
entire life span. PCOS has a significant effect on adult women resulting in diminished quality of life
altered feminine identity and dysfunction in the family and work
environment .
Most debated Topic
Part 1: The History & Geography:-PCOS
was originally described in 1935 by Stein
and Leventhal who reported a
group of women with amenorrhea
and polycystic ovaries of whom some
were hirsute and / or obese in 1990 a National Institutes of Health consensus
conference defined PCOS as a
combination of hyperandrogenism
menstrual dysfunction and exclusion of known disorders
such as congenital adrenal hyperplasia
leading to the above.
Part 2: A
fight between almost all academic bodies,. Millions of dollars spent for
Recommendations & committee Opinions
with level 1-4 evidences : As a result
We GP & pts too are frightened when diff PCO societies fight with swords, daggers,
canons, fighter planes , missile for an
uniform & exact defn which will encompass latent & overt PCO and pick
up caxes which are destined to develop PCO or Metab syb vy one deacde .Till
2003 diagnostic criteria for PCOS were varied
and often confusing However
the joint European Society
of Human Reproduction and
Embryology and The American Society
for Reproductive Medicine ESHRE/
ASRM sponsored consensus meeting in Rotterdam in 2003 accepted
that CPSO consists of the presence
of any 2 of the 3 criteria.
Oligo and / or
anovulation
Clinical and
/ or biochemical evidence of
hyperandrogenism and
The presence
of polycystic ovaries on
ultrasound examination
Part 4: Orther etiogy?? Other etiologies like congenital
adrenal hyperplasia
Cushing’s syndrome and androgen secreting tumours need to be
excluded. Ultrasonographic scanning of women with unexplained
hyperandrogenic chronic anovulation frequently reveal
ovaries that are polycystic Sonography
shows ovarian enlargement multiple
small follicles at the periphery with increased echogenecity.
Part 5: Prevalence L::
Incidence :: How believable
The incidence
is influenced by the nature of
the population being assessed studies in which ultrasound examination
for presence of polycystic ovaries
were conducted reveal a
prevalence rate of
approximately 20 to 30% in Caucasian
women in the reproductive age
There are significant racial
difference and as compared to
PCOS is found to be higher in the
ethnic groups in the south Asians living
in the UK the prevalence
reported was 52% in Indian the incidence of adolescent
PCOS were found to be 36%
Part
6:: Catch them young:-PCOS in
adolescence – a future fertility problem
Polycystic ovary
syndrome is a common
disorder among reproductive age women
yet the diagnosis may be overlooked
during adolescence Although the
clinical and metabolic features are similar
to those found in adult
women it can be difficult to distinguish
the young woman with PCOS from a normal adolescent. Adolescent patients with PCOS who
are at the height of identity
development and awareness of
body image may have a
more significant disturbance in quality
of life .
Adolescent
girls with PCOS were 3.4 times more
lively to be worried about their ability to become pregnant than comparisons and concern about future fertility was associated with significant reductions in quality of life.
In addition
polycystic ovary morphology affects
20-30 % of reproductive aged women and
10% of regularly menstruating
girls . As in adults current therapy of adolescent PCOS focuses
primarily on symptomatic management of the reproductive metabolic and
cosmetic manifestations of the disorder
A cross
sectional study of adolescent
girls with PCOS and healthy comparisons was conducted by Trent et al at
an urban hospital based adolescent medicine practice. Healthy subjects were 2.8
times more likely to have
had sexual intercourse
than PCOS participants though the mean age at initiation of sexual
intercourse among sexually active
girls was not significantly different between the two groups. Girls with PCOS
were 3.4 times more likely to be
worried about their ability to become pregnant than comparisons and concern about future fertility was associated with significant reductions
in quality of life. Adolescents
with PCOS are more concerned about fertility than their
healthy peers and this concern
may affect their overall quality
of life.
Part
7:--The dilemma & confusion is here.. Diagnosis of PCOS – The clinical
features May or
may not have symptoms in varying combination just bto beffol physician
Although adolescent patients with PCOS can present
with a range of symptoms and
laboratory abnormalities typical complaints are acne hirsutism irregular menses
and obesity
Irregular menses
Ovarian
dysfunction usually manifests as oligomenorrhea
/ amenorrhoea resulting from chronic
oligo ovulation / anovulation . Oligomenorrhea occurs usually in adolescence
with onset later in life often associated with weight
gain.
Menstrual
irregularity is a common features of CPSO 995 of CPSO patients
present with menstrual disorders.
99% of CPSO patients present
with menstrual disorders
This menstrual pattern can be difficult to distinguish form
anovulation associated with puberty because
the hypothalamicpituitary -
ovarian axis matures preogressively over a period of several years after
menarche. Although many
adolescents establish regular cycles by 2 years
post menarche irregularity may
continued beyond that time period often
without cause for clinical
concern. Although irregular
menstrual cycles cannot be the sole
crieterion for PCOS they comprise an important symptom
that should be followed in the
adolescent. When oligomenorrhea is
persistent or presents in conjunction
with symptoms of androgen
excess further evaluation for PCOS in
recommended. `
Amenorrheic women with PCOS usually have the most severe
hyperandrogenism and higher antral
follicle counts as compared with women
presenting with oligomenorrhea
or regular menstrual cycles.
Acne vulgaris
Patients
with PCOS complain of inflammatory acne
minimally responsive to conventional
line of treatment . Even if responsive lesions promptly recur on stopping treatment
. An important feature seen is the
development of multiple closed
comedones which rapidly transform
into tender lumpy nodules
distributed in the lower half of face
ad jaw line A pre menstrual
flare is also common . Acne
lesions may not only by localized to the face
but may also be present on the chest
shoulders and back
prompt relapse after stopping the treatment strongly
suggests a hormonal basis .
The prevalence of acne in women with
PCOS has been estimated to
be 10-34% .
Hirsutism
Excessive
facial hair is a racial trait for the
Indian sub continent running within
families and especially strong in
certain ethnic groups. This should
be kept in mind while
evaluating patients complaining of excessive facial / body hair. Androgens affect
various aspects of follicular activity
Acting via androgen
receptors and secretory
factors they increase the growth rate diameter and melanization of hair
in androgen - sensitive areas. It is
these thick coarse terminal hair
in androgen dependent areas which are
unsightly on a female and point
to an underlying hyper androgenic
state. Evaluation of the degree
hirsutism is done by adopting a modified
ferriman Galway score which
evaluates 9 body areas on a scale of 1 to 4 . the total
scores are significant if more than 6 to 8 . Overall 60-75% of
patients with PCOS will have hirsutism.
Acanthosis
nigricans
Typically
thick dark velvety skin situated on the nape of the neck axillae groins and other frictional areas
may often be the first clue of insulin
resistance . The thickening occurs due to the stimulation of tyrosine kinase growth
factor – signaling pathways
in the epidermis . Insulin - kike
growth factor receptor 1 is
present in many tissues including the epidermis and ovary High levels of
insulin directly or indirectly stimulate
the IGF1R resulting in the skin
changes . skin tags
in the frictional areas like the neck
axillae groins infra mammary or
even under a pendulous abdominal fold
are common especially in obese individuals.
Obesity
Obesity is
a common
finding in PCOS and aggravates
many of its reproductive and metabolic features. In fact approximately
50% of PCOS women are overweight or obese and
the history of the weight gain frequently precedes the onset of oligomenorrhea and hyperandrogenism suggesting a pathogenetic role of
obesity in the subsequent
development of the syndrome
PCOS women are characterized by a high
prevalence of several metabolic abnormalities which are
strongly influenced by the presence of obesity. Adequate confirmation
on the genuine role of obesity in determining hyperinsulinemia and insulin
resistance in women with PCOS
drives from studies comparing groups
of normal weight and obese PCOS women
. both festingand glucose
stimulated insulin concentrations are in
fact significantly higher in obese
than in non obese PCOS
subgroups.
It is well
documented that women with PCOS
have a high prevalence of abdominal body fat distribution even if they
are normal weight . The impact of abdominal
obesity on PCOS may be greater
than expected since this phenotype is associated with a more
pronounced hyperandrogenism and insulin resistance than the peripheral one .
Multiple therapies may be needed to address the variety of PCOS
symptoms However it is
important to address the common
cause linked to these PCOS symptoms .
Etio pathogensis: This is the arena of
battlefield:-Insulin Resistance – A pathophysiological contributor in
50-80% of the PCOS women
According to Indian
journal of Endocrinology and
metabolism , 2011 insulin resistance is a pathophysiologicla contributor
in around 50-80 % of women with
PCOS especially in those with more
sevdere PCOS diagnosed on the basis of
National institutes of health
criteria and in women who are overweight.
Insulin
resistance contributes not only to metabolic features
but also to reproductive features
through augmenting androgen production and increasing free androgens
by reducing sex hormone binding globulin . Obesity increases hyperandrogenism hirsutism infertility and pregnancy complications both independently
and by exacerbating PCOS.
Further more women with PCOS have increased risk factors for T2DM cardiovascular disease impaired glucose tolerance.
Glucose
metabolism in a normal cell includes
several processes
· Insulin first binds to its
receptor located on the cell wall forming
a complex called insulin receptor
substrate.
· This complex enters into the
cell for stimulating the most
vital messenger called
phosphatidylinositol 3 kinase.
· Once PI 3 kinase is activated it causes
translocations of glucose
transport 4 to its cell membrane.
· Glucose is then taken by GLUT 4 through glucose channel for utilizing energy .
· Once energy is utilized through glucose the IRS complex
breaks down releasing the
receptor to relocate back to its original site.
· This is how glucose utilization takes place in
the presence of normal insulin sensitive condition.
Phosphatidylinositol 3- Kinase – A key messenger in Insulin sensitivity
Phosphatidylinositol 3 kinase is a key messenger / enzyme responsible for
activation of glucose transport so as
to utilize glucose and liberating
energy. It plays very important role in preserving insulin actions and thus improving insulin sensitivity. This enzyme
plays a vital role in PCOS in
which the most prominent cause is IR. Inositol acts as
a precursor for the synthesis
of phosphatidyl inositol .
Inositol acts as a precursor for the
synthesis of phosphatidyl inositol. Inositol
plays an important role in the production of PI3 kinase. Hence inositol is an integral part
of PI3 kinase.
Therory 2:-Inositol
& PCO:_PCOS…characterized by reduced levels
of inositol
Evidences suggest that a deficiency of
inositol contribute to insulin
resistance in PCOS
individuals . It was observed that deficiency
of inositol shows defective
insulin signaling pathway
in patients with PCOS. The women
with PCOS and normal women were assessed for circulating inositol
and 24 hr urinary clearance of inositol
and insulin sensitivity . The findings
indicated a marked alteration in
inositol urinary clearance
and deficient insulin stimulated PI 3 kinase release in PCOS women.
Plasma concentrations of inositol
is significantly lower in PCOS women compared with normal control subjects
consequently urinary clearance of Inositol was significantly
higher in
CPOS women compared with normal control subjects .
CPOS women compared with normal control subjects .
Increased urinary clearance of inositol is an independent predictor of
insulin resistance in PCOS patients
Consequently AUC inositol was significantly lower in PCOS women compared with normal control
subjects
These findings strongly suggest a
contribution of abnormal metabolism of
inositol to the insulin resistance in PCOS patient which leads to a reduction in
circulating inositol and its
availability to the tissues . Finally in conclusion a defect in tissue availability of inositol in PCOS
contributes to the insulin resistance leading to decreased cellular
availability of the PI 3 kinase
mediated insulin action.
Theroy
3: Altered insulin signaling and its
relationship with IR and PCOS.
PI 3 kinase is a mediator for
glucose metabolism and its utilization
by the cell.
Deficiency of inositol alters
activity of PI3 kinase.
Reduced activity of PI 3 kinase
reduces translocation of GLUT 4
thereby causing hyperglycemia
This brings about altered insulin
signaling causing
hyperinsulinemia and thus IR . Insulin resistance thus is
responsible for PCOS.
Pathway of inositol deficiency and
PCOS
Metformin fails to manage Insulin Resistance in PCOS women
Metformin is the most commonly prescribed insulin senstising drug in the treatment of PCOS. It
enhances insulin sensitivity by
activating PI 3 kinase but it has been postulated that Metformin has a very restrictive mechanism of action due to
which it is not a right
treatment option for PCOS.How
useful is metformin??Authentic journal statements on the use of
metformin in PCOS
In the absence of large adequately
powered placebo controlled trials it
is difficult to provide useful answers about the longer term
benefits of metformin in PCOS
women. However there are more side effects
with metformin like lactic
acidosis and malabsorption including poor adsorption of vitamin B12
Thus there arises a therapy which
cares for each and every symptom
of PCOS along with documented
safety.
How important is
MI?? Myo- inositol – The Ultimate Insulin Sensitizer
Myo- inositol a six carbon sugar
alcohol present abundantly in the body. The chemical name of myo inositol is
1,2, 3,,5/4,6- Hexahydroxycyclohexane .
It is a precursor of various cell membrane phospholipids.
Generally myo inositol is
present in the cells. Serum concentrations are high during fetal life and later on falls
However during certain conditions
like polycystic ovary
syndrome physiological
requirements of myo inositol increased.
Myo inositol is an insulin
sensitizing agent produced by the human body from glucose and is one of 9 distinct isomers of
the nutrient inositol naturally produced by the human body. It is
a vitamin B complex derived product that has been
evaluated in a number of controlled studies
looking at ovulation frequency , time
to ovulation follicular
maturation and the quality of
oocyte production cell morphogenesis and
cytogenesis lipid synthesis the
structure of cell membranes and
cell growth . Myo inositol plays an important
role as the structural basis for a
number of secondary messengers like to synthesise phosphatidylinositol 3
kinase a key messenger to improve
insulin sensitivity and
glucose utilization along with reduction
of insulin resistance.
Growing evidences of Myo inositol in PCOS
Studies have found that deficiency of inositol which is precursor for phosphatidylinositol 3 kinase contributes to the insulin resistance in pcos
women. The women with PCOS are characterized by abnormal metabolism of inositol and have diminished insulin stimulates releases of the putative phsophatidylinositol
mediator.
Myo inositol significantly improves
insulin activity and reduces glucose level in PCOS
patient. It also reduces total
testosterone as a result it
improves hormonal balance and ovulation. Elevated concentration of myo inositol in human
follicular fluid appears to play important
role in follicular maturity and provides
good quality oocytes.
Myo inositol besides improving hormonal profile and restoring ovulation
is also able to induce
regular menses in PCOS patients . Finally
in conclusion myo inositol increases implantation
and pregnancy rate in PCOS
patients.
Clinical effects of myo inositol supplementation can be summarized as follows :
Reduces insulin
resistance and increases insulin sensitivity
Increases glucose uptake
Lowers insulin levels
Lower total and free testosterone
Improves menstrual cycle
frequency
Improves pregnancy rate
and live birth rate
Lowers triglycerides and improves
lipid profile .
As per ped Health 2010; Adolesscent girls
with PCOS require a long term
committed treatment . Therefore alternative treatments may be
possible option for a subset of
PCOS adolescent females. Myo inositol a component of the vitamin B complex has been shown to improve
insulin signaling thereby restoring
normal ovulatory function
in PCOS women.
Thus as Myo inositol
takes care of the major symptoms associated with PCOS Care in established PCOS cases and in adolescent PCOS
cases .
Clinical studies of Myo inositol in PCOS
Myo inositol shows 56% reduction
in HOMA Index
P.G, Artini et al evaluated the
effects the administration of
myo inositol on hormonal
paratemeters in a group of
polycystic ovary syndrome patients
in a controlled clinical study
50 overweight
PCOS patients were enrolled after informed
consent. All patients
underwent hormonal evaluations and an oral glucose tolerance test before and after 12 weeks of therapy MYO 2 g plus folic acid 200 mg every day Group B
folic acid 200 mg Ultrasound
examination and Ferriman – gallwey
score were also performed
Main outcome measures
were plasma LH, FSH, PRL , E2 17 OHP , A, T , glucose insulin , c peptide concentrations , BMI,
HOMA index and glucose
to insulin ratio.
First of all in the MYO treated
group the duration of stimulation was lower
than in control group and also
r-FSH units used were fewer in the MYO
treated group. The HOMA index
got significantly reduced from 2.5 + 0.6
to 1.1 + 0.3 in the MYO group
.However in the control group the HOMA
index remained unchanged from 2.5
+ 0.4 to 2.4 + 0.7
The insulin levels got significantly reduced from
11.4 + 2.2 to 5.5 + 1.1 in the MYO
group However in the control group
the insulin levels decreased from 11.4
+ 1.3 to 10+ 1.1
The BMI got reduced from 28+ 1.6 to 27.3 + 1.3 in the
MYO group . However in the control group
the insulin levels increased from
26.6 + 2.1 to 27.5 + 1.7
Menstrual cyclicity was restored in all amenorrheic and oligomneorrheic subjects
in the Myo inositsol group No
changes occurred in the patients
treated with folic acid.
Pregnancy rate was considerably higher in the treated group
. 10 clinical pregnancies developed in Group A and 4 in Group B while the delivery rate was
8 versus 3 respectively
MYO supplementation is efficient in changing many
of the hormonal disturbances of
PCOS improving insulin sensitivity of
target tissues and positively affecting the hormonal functions.
Myo- inositol shows 2
times improvement in insulin sensitivity
Forty two women with PCOS were treated in a double blind
trial with MYO inositol plus folic acid or folic acid alone as placebo
After randomization 23 women
received 4 gm of Myo inositol plus
400 mcg of folic acid and 19 women received 400 mcg folic acid alone as
placebo. The treatement was given for 12-16 weeks. In the group
treated with MYO inositol the serum total testosterone decreased
from 99.5+ 7 tpo 34.8 + 4.3
ng/dl and serum free
testosterone from 0.85 + 0.1
to 0.24 + 0.33 ng/dl . The area
under the plasma insulin curve after oral administration of glucose decreased from 8.54 + 1.149 to 5.535 + 1.792 ug /ml/min . Plasma
triglycerides decreased from 195+ 20
to 95+ 17 mg /dl The index of
composite whole body
insulin sensitivity increased
from 2.80 + 0.35 to 5.05 + 0.59 mg 2/dl-2
16 out of 23 women of Myo
inositol group ovulated and only
4 out of 19 women treated with
folic acid were ovulated .
In conclusion treatment of
PCOS patients with Myo inositol provided a decreasing
of circulating insulin and serum
total testosterone as well as an
improvement in metabolic factors.
Myo inositol shows 16-30 5
reduction in Hirsutism and 21-53% reduction in acne
Zacche et al in a randomized clinical
study stated that Myo
inositol administration is a
simple and safe treatment
that amelionates the
metabolic profile of patients with PCOS
reducing hirsutism and acne . Fifty
patients with PCOS were enrolled in the study Every
woman presented signs of hyperandrogenism on the basis of the number of lesions on the
face /chest / bck they were
distinguished as moderate form severe
acne also using a modification of
the ferriman gallway score that quantifies hairs
in nine body areas hirsutism was classified in mild moderate
, severe
All patients were evaluated for
testosterone and insulin resistance was
measured using homeostasis
model assessment
Patients were treated
orally with Myo inositol 2 g plus folic
acid 200 mg as twice daily
continuously for 6 months. Significantly
changes were observed in
biochemical features of patients with
PCOS as shown
Hormonal and metabolic
profile at baseline and after 3 months of myo inositol treatment
Testosterone basal insulin levels and consequently and HOMA
index were significantly decreased.
Number of cases and severity of acne at baseline and after 3 and 6
months of treatement with myo inositol
Also clinical
features improved after myo inositol
treatment of 3 and 6
months . all patients
of our study presented hirsutism
before getting Myo inositol During
the observational period
the hirsutism score decreased
after 3 months and after 6
months of myo inositol treatement
After 3 months
of myo inositol administration
plasma testosterone free testosterone insulin and HOMA index were significantly reduced,. Both hirsutism
and acne decreased after 6 months
of therapy.
Myo inositol
is a simple & safe treatement
that ameliorates the metabolic
profile of patients with pcos
reducing hirsutism & acne
Myo inositol restores menstrual cycles in all
amenorrheic and oligomenorrheic patients
by reducing insulin resistance
In a
controlled clinical study 20
overweight PCOS patients were
enrolled. All patients
underwent hormonal evaluations
and an oral glucose tolerance test before and after 12 weeks of therapy myo inositol 2 gm plus
folic acid 200 ug every day Group
B folic acid 200 ug every day . PCOS
women treated with myo
inositol for 3 months restores menstrual cycle in all amenorrheic
and oligomenorrheic subjects .
also myo inositol administration significantly reduced insulin levels testosterone levels
plasma luteinizing hormone .
Myo inositol administration significantly reduce HOMA
index afer 3 months of therapy At baseline the HOMA index
was 2.8 after treatment it came
down to 1.4
Myo inositol
administration positively affects hyperinsulinemia and hormonal
parameters in overweight
patients with polycystic ovary syndrome. Myo inositol
administration improves reproductive axis functioning in PCOS patients reducing the hyperinsulinemic state that affects LH secretion. Myo inositol shows
62% reduction in free testosterone levels.
Papaleo et al
in a randomized clinical
study stated that myo inositol is
a simple and safe treatment that is
capable of restoring spontaneous ovarian activity and consequently fertility in most patients
with PCOS
In this
study these researchers administered myo
inositol combined with folic acid twice
a day for up to 6 months to
25 PCOS patients of childbearing age having age 28 to 38
years with oligo or
amenorrhea hyperandrogenism or hyperandrogenemia .
While
receiving myo inositol
treatment 22 out of the 25 patients
had at least one spontaneous menstrual
cycle during the 6 months
treatment period and 18 of these
patients maintained normal ovulatory cycles during the entire 6 months
study period . All of them
maintained spontaneous ovulation
activity documented by
follicular growth and increased serum progesterone concentrations in the
luteal phase .
Furthermore
after treatement with MI these women showed significantly
decreased concentrations of serum total testosterone and free
testosterone .
The
length of successive cycles was improved to 31.7 + 3.2 days. Treatement with Myo inositol in PCOS patients
provided decrease in circulating insulin and glucose level
and serum total testosterone as well as an improvement in metabolic factors. A total of 10 singleton pregnancies were
obtained. The study authors
concluded that myoinositol treatement is capable of restoring
spontaneous ovarian activity in most
patients with PCOS
Myo inositol restores
ovulation improves lipid profile
Gerli et al
assessed the effects of supplemental myo
inositol on ovarian function in a
randomized double blind placebo
controlled trial of oligomenorrheic and polycystic ovarian
women Of the 92 subjects 45 were randomized to receive myo inositol
plus folic acid / day
for 14 weeks while the remaining 47 received folic acid per day
400 mcg folic acid as a placebo
Serum samples were obtained
twice weekly to assess hormonal concentrations circulating
estradiol concentrations
increased during the
first week of treatment only in
the myo inositol group
indicating that there had been a
rapid effect of myo inositol on follicular maturation . An improvement in ovulation frequency was also observed between the women receiving
myo inositol and those on placebo with 82% of
women on myo inositol ovulating at least
once during the 14 week period
and 63% of women on placebo
ovulating at least once during
the study period . The time to the first ovulation was significantly shorter
in treated patients
in these patients the time to first
ovulation was 24.5
days .
Myo
inositol treatment also resulted in significantly
increased concentrations from
baseline in high density
lipoprotein cholesterol no changes were
observed in he control group. Metabolic risk factor benefits of inositol treatement
were not observed in a morbidly obese subgroup of patients . The
authors concluded that supplemental myo inositol improves
ovarian function in women
with oligomenorrhea ad
polycystic ovaries.
Myo inositol
provides follicular maturity and good
quality oocytes
Unfer et al
stated that myo inositol treatment
is able to improve oocyte and
embryo quality during ovarian
stimulation protocols. In this
study Eighty four euglycemic PCOS patients undergoing ovulation
induction for ICSI were recruited
Forty three participants
received Myoinositol 2 g twice
a day and forty one patients
received D chiro inositol 0.6 g
twice a
day , the number of mature oocytes was significantly increased in the myo inositol group compared to D chiro inositol . Concurrently the number of immature
oocytes decreased in myo
inositol treated patients . Furthermore the myo inositol treated group showed an increase in the mean number of top quality embryos
and in the total number of
pregnancies compared to the D chiro inositol
treated group/ The presence of high
concentrations of myo inositol
in the follicular fluid has become
a marker of good quality oocytes
it was observed that high concentrations of myo inositol in the follicular fluid paly
in important role in follicular
maturation and in embryonic development
. In addition myo inositol decreases immature oocytes
production
ESHRE 2008-
Myo inositol , a simple and safe first
line treatment in women with
PCOS
Supplementation of myo
inositol is positively related to
oocyte maturity in mouse while higher concentrations in human
follicular fluids are marker of
good quality oocytes . 75
infertile women with polycystic ovary
syndrome to receive continuously 4 g myo inositol
plus 400 ug folic acid orally
or 50 mg clomiphene citrate
daily for 5 days eventually increased to 100 mg if resistance occurred.
During follow up period of 6 months
ovulatory activity with ultrasound scan and
hormonal profile ongoing pregnancy and spontaneous abortion were assessed.
Pregnancy rate was 33.3% in the myo
inositol group ans 28.2 % in clomiphene citrate group among
pregnancies the rate of
multiple pregnancy was 18.1 %
in the clomiphene group and
0% in the myo
inositol group . No side
effects were reported with
myo inositol
Myo inositol
is a simple and safe treatment that is
capable to restore a spontaneous ovarian
activity and consequently fertility in
most patients with polycystic
ovary syndrome. This therapy
did not cause multiple
pregnancy and can be evaluated
as primary method of inducing
ovulation in PCO’s women .
PCO care
contains Myo inositol which takes care of the symptoms of PCOS
and thus provides a
comprehensive management of PCOS
Composition
Each tablet of PCO care contains :
Myo inositol
…. 1 gm
Myo inositol
is an isomer of a C6 sugar alcohol that belongs to the vitamin B
complex group. The chemical name
of myo
inositol is 1 R, 2R , 3S , 45 ,
5R, 6S cyclohexane – 1,2,3,4,5,6- hexol
Clinical
pharmacology
Myo inositol is metabolized to
phosphatidylinositol which acts as a
precursor for phosphatidylinositol 3
kinases a key messenger responsible for activation of glucose transport so as to utilize glucose and to liberate energy . It helps
to improve insulin sensitivity in PCOS patient. Inositol deficiency is
the basic pathophysiology for PCOS . Women
with PCOS had a greater than fivefold
increase in urinary clearance
of inositol and circulating plasma
concentration of inositol was reduced by half in PCOS
women as compared to normal
women . During certain conditions like polycystic ovary syndrome the physiological requirements of myo inositol increases The use of
myo inositol in PCOS patients
reduces insulin resistance
testosterone levels and improves
ovulation Moreover elevated
concentration of myoinositol in
human follicular fluid improves
follicular maturity and menstrual
frequency .
Pharmacokinetics
Myo inositol
is absorbed from the small
intestine and is transported by the portal
circulation to the liver and then
by the systemic circulation to various
tissues in the body Within the
liver and the various tissues of the body myoinositol
enters into a wide range of biochemical pathways
Myo inositol reacts with CDP
diacylglycerol to form the the phospholipid phosphatidylinositol which
can be incorporated into membrane structure
.Phosphatidylinositol via
kinase reactions form phosphatidyl 4,5
bisphosphate which is the precursor to inositol -1,4,5-
triphosphate diacylglycerol
phosphatidylinositol -3,4,5-
triphosphate etc. The myo inositol
phosphates can be dephosphorylated via phosphatases.
Indications
PCO
care is indicated for the ultimate management
of insulin resistance in PCOS and its associated symptoms
Menstrual
irregularities
Hyperandrogenism
Obesity / Weight gain
Anovulation
No comments:
Post a Comment