Pcos medan

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  • 1. POLYCYSTIC OVARY SYNDROME (PCOS) : From the Ovary to the Pancreas Division of Reproductive Endocrinology and Fertility Department of Obstetrics and Gynecology Faculty of Medicine, Gadjah Mada University Yogyakarta Mochamad Anwar

2. POLYCYSTIC OVARIES Abnormal ovarian morphology Peripherally distributed follicles, like a necklace and completely encircling the cortical surface of the ovary (10 or more follicles of 2 to 8 mm in diameter). Increased stroma and increased ovarian volume (>10 ml) (Polston et al, 1988) 3. PATHOPHYSIOLOGY While the basic dysfunction seems to lie within the ovary, however the clinical expression and severity of the symptoms of PCOS dependent on extra- ovarian factors Single defect inSingle defect in action and secretionaction and secretion of insulineof insuline PrimaryPrimary neuroendocrineneuroendocrine defectdefect Defect ofDefect of androgenandrogen sysynnthesisthesis Alteration inAlteration in cortisolcortisol metabolismmetabolism HyperinsulinemiaHyperinsulinemia and insulinand insulin resistanceresistance Increased pulseIncreased pulse frequency andfrequency and amplitudo of LHamplitudo of LH increasedincreased production ofproduction of ovarian androgenovarian androgen IncreasedIncreased production ofproduction of adrenal androgenadrenal androgen 4. Diagnosing PCOS There is a lack of consensus between endocrinologist and gynecologist in the definition, diagnosis, and treatment of PCOS, and as consequence, women may receive a different diagnosis or treatment depending on the type of specialist consulted ( Cusson et al., 2005) 5. The optimal management of (POCS) is uncertain, however, treatment is focused on amelioration of the reproductive clinical features For the most part, in reproductive endocrinology fields, treatment aims to restore ovulatory cycles so that the pregnancy can be achieved Reproductive EndocrinologyReproductive Endocrinology 6. SURGIGAL TREATMENT OF PCOS Destroying the androgen-producing ovarian stroma. Destruction of ovarian stroma has an indirect modulating effect on the pituitary-ovarian axis. LH concentrations decrease after LOD, and appear to be the best determinant of response to treatment. LAPAROSCOPIC OVARIAN DRILLING (LOD) 7. (Yarak et al: Hyperandrogenism and skin: Polycystic ovary syndrome and peripheral insuline resistance, review articel, an Bras Dermatol, 2005) The most frequent clinical characteristics of polycystic ovarian syndrome are associated with with the pilosebaceous unit, such as hirsutism, acne, seborrhea and alopecia. DermatologyDermatology Thus, the Dermatologist may be responsible for making an early diagnosis of the syndrome. 8. The Rotterdam ESHRE/ASRM-sponsored PCOS consensus workshop group 1. Chronic anovulation 2. Clinical and/or biochemical signs of hyperandrogenism, and exclusion of other aetiologies Note : Polycystic-appearing ovaries observed either through ultrasound or gross examination are not necessary for diagnosis. Revised 2003 criteria (2 out of 3) 1. Oligo- and/or anovulation 2. Clinical and/or biochemiocal signs of hyperandrogenism 3. Polycystic ovaries And exclusion of other aetiologis (congenital adrenal hyperplasia, androgen-secreting tumours, Cushings syndrome) The concensus of National Institute of Health (1990):The concensus of National Institute of Health (1990): 9. Current option in pharmacology Apart from oligo-ovulation and hyperandrogenism, other common findings in women with PCOS include obesity, hyperlipidemia, descreased SHBG, infertility and insulin resistance. Of all these sequelae, insulin resistance is potentially the most dangerous. ( Wei and Pritts : Therapy for PCOS, current option in Pharmacology, 2003) 10. PCOS is a hormonal imbalance linked to the way the body processes insulin after it has been produced by the pancreas to regulate blood sugar (glucose) Insulin resistance. The underlying cause of PCOS, insulin resistance, has many factors that contribute to its presence in the body. Polycystic ovarium syndrome : from the ovary to the pacreas 11. 4. F cells Pancreatic polypeptide 1. cells ( 20%) Glucagon 2. cells ( 75%) Insulin and Amylin 3. D cells Somatostatin Islets ofIslets of LangerhansLangerhans PANCREASPANCREAS 12. Insulin receptors & Insulin action Fat (adipose), liver, and muscle cells, the three major tissues specialized for energy storage Many cells of the body appear to have specific cell surface insulin receptors. These receptors bind insulin rapidly, with high specificity and affinity to bind picomolar amounts. 13. In the absence of insuline,In the absence of insuline, glucose cannot enter the cell.glucose cannot enter the cell. 14. promoter Coding reg transcription mRNA Modified from Howard L. Foyt et al. Synthesis GLUT 4 translocation PPAR PPRE Insulin receptor Insulin RXR Glucose Asman Manaf, Sub Bagian Metabolik Endokrinologi, Bagian I. Penyakit Dalam FK UNAND/RSUP Dr M Jamil Padang ECF =Extra cellular fluidECF =Extra cellular fluid ADIPOCYTESADIPOCYTES (FAT CELLS)(FAT CELLS) 15. PPAR promoter Coding reg +RXR Modified from Howard L. Foyt et al. Thiazolidinediones. Diabetes Mellitus: a Fundamental and Clinical Text, 2nd Ed. PPRE receptor Insulin Insulin resistance Glucose mRNA Synthesis GLUT 4 X X transcription ECF =Extra cellular fluidECF =Extra cellular fluid Asman Manaf, Sub Bagian Metabolik Endokrinologi, Bagian I. Penyakit Dalam FK UNAND/RSUP Dr M Jamil Padang ADIPOCYTESADIPOCYTES (FAT CELLS)(FAT CELLS) 16. Insulin resistance PCOS Insulin resistance vastly reduces the number of insulin receptor sites or doorways on the walls of cells. 20.00020.000 5.0005.000 HealthyHealthy personperson HyperglHyperglyycaemiacaemia LiverLiverFatFat Blood streamBlood stream throughtoutthroughtout the bodythe body Central obesityCentral obesity PCOSPCOS InsulinInsulin resistanceresistance 11 Insulin resistance PCOS Insulin resistance vastly reduces the number of insulin receptor sites or doorways on the walls of cells. Insulin resistance PCOS Insulin resistance vastly reduces the number of insulin receptor sites or doorways on the walls of cells. Insulin resistance PCOS 20.00020.000 HealthyHealthy personperson 17. Insulin resistance PCOS GeneticGenetic predispositionpredisposition Stress andStress and UnhealthyUnhealthy livelive stylestyle Overproduction ofOverproduction of insulin by pancreasinsulin by pancreas The cells will protect itself byThe cells will protect itself by reducing the number of itsreducing the number of its receptor sitesreceptor sites Unbalance hormoneUnbalance hormone levels in PCOSlevels in PCOS Ovaries produceOvaries produce large amounts oflarge amounts of testosteronetestosterone InfertilityInfertility AndrogensAndrogens EstrogensEstrogens Weight gainWeight gain Formation ofFormation of cysticcystic folliclesfollicles 22 Atresia of granulosa cellsAtresia of granulosa cells Atresia and prematurity ofAtresia and prematurity of developing folliclesdeveloping follicles 18. INSULIN RESISTANCE .a ratio of less than 4.5 of fasting glucose to insulin levels correlates significantly with insulin resistance and has been studied for use as a screening test in obese patients in PCOS. ( Richardson: Current Perspective in PCOS,Am Fam Phys, 68(4): 687- 704, 2003 ) 19. (This slide is addopted from Muharam presentation, PIT Batam)(This slide is addopted from Muharam presentation, PIT Batam) 20. Worsening glucose intolerance PCOS with insulin intolerance Beta cells dysfunction Impaired glucose tolerance Beta cells exhaution Frank diabetes. (Roy Homburg)(Roy Homburg) 21. Main disturbances in PCOS Insulin resistance 80% of80% of obeseobese PCOSPCOS 30%-40%30%-40% of leanof lean PCOSPCOS Genetic post-receptor defect unique to PCOSGenetic post-receptor defect unique to PCOS Exaggerated by obesityExaggerated by obesity 22. Metabolic syndrome (Any 3 out of 5 ) Abdominal obesity (waist > 88 cm) Triglycerides (> 150 mg/dl). HDL cholesterol (< 50 mg/dl). Blood pressure (>130 / > 85 mmHg). Glucose (fasting >110 2 hrs >140 mg/dl) Risk factor for developing Type-2Risk factor for developing Type-2 Diabetes and Cardiovascular disease.Diabetes and Cardiovascular disease. 23. GLUCOSE TRANSPORTGLUCOSE TRANSPORT INTO LIVERINTO LIVER Glucose transport into lever cells (hepatocytes) is not directly insulin-dependent but will be influenced by the presence or absence of insulin. 24. In fed state, liver cell takes upIn fed state, liver cell takes up glucoseglucose 25. In fasted state, liver cell makes glucoseIn fasted state, liver cell makes glucose and transports it out into the blood toand transports it out into the blood to help maintain glucose homeostasishelp maintain glucose homeostasis HepatocyteHepatocyte 26. Glucose transport in skeletal muscle 1.1. Exercising skeletal muscle is not dependentExercising skeletal muscle is not dependent on insulin activity for its glucose uptake.on insulin activity for its glucose uptake. 2.2. When muscle contract GLUT-4 transportersWhen muscle contract GLUT-4 transporters are inserted into the mebrane and glucoseare inserted into the mebrane and glucose uptake increases.uptake increases. 3.3. The intracellular signal for this is unclear, butThe intracellular signal for this is unclear, but appears to involve Caappears to involve Ca2+2+ and decreased ofand decreased of inorganic phosphatase (Pi).inorganic phosphatase (Pi). 27. cells ofcells of PancreasPancreas InsulinInsulin LiverLiver GlucolysisGlucolysis GlycogenesisGlycogenesis LipogenesisLipogenesis Protein synthesisProtein synthesis Muscle andMuscle and AdiposeAdipose Glucose transportGlucose transport Plasma glucosePlasma glucose Plasma glucosePlasma glucose CCells ofells of PancreasPancreas 1.1. Increases glucose transportIncreases glucose transport into insuline sensitive cell.into insuline sensitive cell. 2.2. Enhances cellular utilizationEnhances cellular utilization and storage o