Polycystic Ovarian Disease or Polycystic Ovarian Syndrome: How to Identify and Manage- A Review
School of Medical and Allied Sciences, K.R. Mangalam University, Sohna Road, Gurugram, Haryana, India.
PCOD or PCOS is a reproductive and metabolic disorder concerned with the ovaries. An ovary is an active organ that changes its form, appearance, and shape according to its hormonal ambiance. PCOD or PCOS is a condition in which ovary of women of childbearing age is enlarged and starts producing an excessive amount of male hormones (androgens) and is the main cause of infertility, diabetes, irregular menstrual periods, and hirsutism. No exact cause of the disease has been found yet but the change in lifestyle, change in dietary needs, lack of exercise, and the most important of all, i.e. stress level induces the disease. There are medicines, which can induce an artificial menstrual cycle and regulate the level of hormones and ultimately treat the three signs of PCOS i.e. Acne, Hirsutism, and Obesity.
Keywords: PCOD, PCOS, ovulatory dysfunction, hyperandrogenaemia, hirsutism
PCO (Polycystic ovary) is a condition and PCOS (Polycystic ovary syndrome) is a symptom [1, 2]. A pattern of symptoms belonging to a particular disease is defined as a syndrome . Ovary of normal women who is in the age of her reproductive years has a volume of around 4-6 ml of each ovary and have a folded structure like a walnut, but if a woman is diagnosed with PCOS, her ovaries get enlarged and bulky with having more than 10 ml of volume, thus it starts producing a high quantity of androgens [4-10].
Normal ovulating ovaries contain fluid-filled sacs called follicles, with variations in size from 1 to 30 millimeters, which depends on the phase of the menstrual cycle. The individual sac or follicle contains a tiny egg, which never matures enough to trigger ovulation. While in the polycystic ovary, there are more than 12 small follicles, measuring 2 to 9 millimeters in diameter, and are usually arranged in a ‘pearl-necklace’ manner around the periphery . So, as the name suggests, poly means many, in polycystic ovary syndrome there are many small cysts like sacs that are filled with fluids and grown inside the ovaries and they do not need to be removed surgically.
Fig 1: Normal & polycystic ovary
Fig 2: Inside view of Polycystic ovaries
The vital features of PCOS are excessive production of male hormones and having many cysts in the ovaries. However, a few common problems that women diagnosed with PCOS may include the following:
But these features do not rely on if a patient may have polycystic ovaries or may have PCOS. In 2003, a meeting was held by experts and they revised their concern about the PCOS, which later on they get their work published in 2004, which concluded: ‘PCOS is a syndrome of ovarian dysfunction and its basic features include hyperandrogenism and polycystic morphology’ .
Polycystic ovaries were described as early as the 19th century but it was not until 1935 that syndrome was identified and subsequently named for Stein and Leventhal, who first associated with amenorrhea, obesity, and hirsutism with polycystic ovaries in seven patients and thus PCOS syndrome was initially termed as Stein–Leventhal syndrome [12, 13].
Before their research, dating back in 1721, young married women, infertile and moderately obese had their ovaries of larger size and bulky than normal were identified but then also it was not recognized. In 1844, Chereau described the sclerocystic changes in ovaries yet it was not recognized until Stein and Leventhal had comprehensive research on it .
In 1985, another research was carried out by Adams and his colleagues and they noticed polycystic ovaries with an excessive number of follicles and termed that condition multifollicularity. According to them, polycystic ovaries are those in which there is the presence of more than 10 cysts having 2–8 mm diameter and are peripherally arranged .
ETIOLOGY: The exact etiology of PCOS or PCOD is yet to be explicated; nevertheless there is noticeable inherent resistance towards insulin, even if the women are slender [14, 15]. Following hyperinsulinemia (increase in insulin level), which increases the production of androgen; there is a decrease in protein binding, which ultimately increases the level of free androgen. Due to the above-mentioned hormonal imbalance, there are noticeable alterations in the appearance of the ovary, disturbing its function and hurts fertility [16-19].
Insulin resistance concerning PCOS is further worsened by obesity . Obesity is having a two-directional relationship with PCOS, with women gaining weight regularly, exacerbates PCOS occurrence and its severity. PCOS reacts well to exercise and having a change in the dietary plan, both of which reduce insulin resistance .
Some features highlighted by findings that androgen secretion is stimulated by insulin via ovarian theca, which suppresses (SHBG) sex hormone-binding globulin and, thus, enhances free circulating testosterone . However, insulin resistance is not considered a universal feature of PCOS .
Fig 3: The etiological, hormonal and clinical features of PCOS
As mentioned above, the fundamental pathophysiological defect concerning PCOS is not known, but some of the important features include resistance to insulin, excess production of androgen, and transformed gonadotropin dynamics . Organs that are affected by PCOS are a woman’s ovaries, it is the reproductive organ through which estrogen and progesterone hormones are produced and ultimately menstrual cycle is regulated. It is a myth that women do not need for male hormones but the fact is ovaries produce a negotiable amount of male hormones that we call as androgens. In PCOD, there are elevated levels of Luteinizing Hormone, which is three times higher than Follicle Stimulating Hormone, which ultimately leads to increased production of testosterone by the ovaries leading to the growth of facial hair and acne .
It is also associated with an imbalance in glucose and insulin dysfunction, which leads to obesity, diabetes, a rise in cholesterol level, and an increase in blood pressure. Thus increased production of androgen blocks the ovulation process and causes follicular atresia (Growth of follicles is arrested), before the pre-ovulatory phase. Also, if women take a diet, which is high in carbohydrate and fat content then weight gain resulting from dietary plan seems to exacerbate the signs of PCOS. Women having PCOD are at high risk of developing diabetes, cardiovascular diseases, infertility, and endometrial cancer [24, 25].
No exact cause of PCOD or PCOS has been found yet, but yes there are certain points, which correlate the cause of PCOD and these are the patient’s family history (genetic), her change in lifestyle, lack of daily routine exercise, changes in dietary habits, loss of work-life balance, exposure to environmental pollution, exposure to mobile phone radiations, and the most important of all is stress . Stress levels in humans are increasing day by day and, thus, it has now developed as one of the primary causes of PCOD, which can ultimately lead to a rise in blood pressure (hypertension), diabetes mellitus (most commonly Type-2 diabetes), increased risk of uterine cancer and many cardiovascular diseases [22, 24, 25, 27]. Researchers are still trying to discover if any gene is responsible or might be linked to PCOS or PCOD. Some women, who are obese, having severe excess body hair and raised blood levels, yet have a perfectly regular menstrual period . And many women are thin but have PCOS, which reminds that the exact cause or the exact story about PCOS is not confirmed. When women eat lots of carbohydrates the level of insulin in the body is increased, which increases the level of testosterone and decreases SHBG (a protein to which testosterone attaches) level in ovaries and liver respectively. Changes in testosterone and SHBG levels elevate free testosterone levels, which ultimately leads to irregular periods and skin problems [28, 29].
Certain causes of disordered ovulation, hirsutism, and acne are listed below:
Since PCOS is a syndrome and cannot be diagnosed by single diagnostic criteria, it is identified by any two out of the following three clinical criteria, because women having PCOD may have:
Oligomenorrhoea is a condition when there is a skip of more than 3 menstrual cycles or we can say that irregular menstrual cycle. There are several blood tests, which are done to check the menstrual irregularities and these are levels of Luteinising Hormone (LH), Follicle Stimulating Hormone (FSH), TSH, and Prolactin, which is known as PCOD panel as all these laboratory tests are done under PCOD Panel. Hyperandrogenism is when there is excess production of androgens, which is exposed by acne, oily skin, and excess hair on the face, chest, and stomach [6, 16, 30]. While in some cases, women face hair thinning and baldness, but it could be a sign of underactive thyroid, malnutrition, iron or zinc deficiency, stress, sickness or a problem of PCOS also. Polycystic ovaries mean when there are several present small sized follicles around the periphery or near the ovarian surface which is diagnosed by ultrasonography [11, 31]. If there is a reverse ratio of FSH: LH (3:1), then it may be PCOD. Endocrine features related to the diagnosis of PCOS include an elevated level of certain hormones like androgens, luteinizing hormone, prolactin, and estrogen . A lowering of vitamin D level also exacerbates PCOD .
A doctor must be able to see the ovaries while investigating for polycystic ovaries and this can be done by using abdominal ultrasound, vaginal ultrasound and/or laparoscopy. In abdominal ultrasound, a map of the area being scanned by using soundwaves and investigate the ovaries. Though this method is painless ovaries are not visible so vaginal ultrasound or laparoscopy is done to have a clear look at the ovaries. Vaginal ultrasound is not done in unmarried women, because it can be done using a vaginal probe, which is gently inserted into the vagina and placed right next to the wall of the ovary to get a clear look at the prominence of cysts. While laparoscopy, a cut in the naval is made and an extremely small telescope is allowed to enter through the cut and allow the surgeon to have a clear and complete look at ovaries, uterus, and fallopian tubes, and so on. With the help of laparoscopy, the doctor can get a good-quality picture of the desired part .
There are many views regarding the treatment of PCOS, some say it cannot be treated as it is a life-long disorder and some concluded that having a change in lifestyle and having hormonal treatment can work well with PCOS . Consequences related to health concerning PCOS are diverse and may include non-functioning or dysfunction of certain organs, so it is the utmost thing to get treated off this disorder and have a stress-free life. If a woman is obese, she may have a deficiency of vitamin-D, because obesity is directly linked with a decrease in the level of vitamin-D and that person may likely get osteoporosis or rickettsia . Thus, the very first step in the treatment changes in lifestyle. There are certain lifestyle management strategies, which work well in PCOS:
Recent medicines used in regulating PCOS:
Certain medicines are used globally to regulate PCOS and the first line of pills that are used to prevent hirsutism, acne, and irregular menstrual periods are oral contraceptives. Oral contraceptives are the pills, which are appropriately composed of hormones and they start an artificial menstrual cycle in women so as she can get a withdrawal bleeding. Contraceptive Pills come in a pack of 21 active tablets, and some then have seven days of inactive tablets as a reminder to have a seven-day break from the medication. These pills also possess good treatment for excess hair and acne because they contain a small dose of male hormone blockers. These pills result in very low levels of free testosterone in the body. While having these pills, one cannot get pregnant. In the market, there are many brands of the pills available and these are:
Some drugs that contain CPA Cyproterone acetate, are enormously useful drugs for the management of severe androgen-excess disorders. CPA is an androgen-blocker—which means it suppresses the ovarian production of testosterone—and it is a progestin, so it protects the uterus against cancer and lightens menstrual periods. It is usually given with estrogens .
Recent advances in the management of pcos
PCOS appears to be a heterogeneous condition and whose initial management of diagnosis of PCOS or PCOD will depend on the clinical problems (anovulation or hirsutism).
The next medical treatment was ovulation induction with metformin, an insulin-sensitizing agent, which decreases the insulin level and lowers the level of circulating total and free androgen with a result in improving clinical sequelae of hyperandrogenism.
PCOD or PCOS is a reproductive disorder in which women’s ovary gets enlarged and starts producing an excessive amount of male hormones (androgens) and is the main cause of infertility, diabetes, irregulation in menstrual periods, and hirsutism. The pathophysiologic defect is not known yet, but certain vital features are known, which include resistance towards insulin, an increase in the level of androgen production, and altered gonadotropin dynamics. It is also associated with an imbalance in glucose and insulin dysfunction, which leads to obesity, diabetes, a rise in cholesterol level and an increase in blood pressure. Stress is one of the primary causes of PCOS, which can ultimately lead to hypertension, diabetes mellitus, increased risk of uterine cancer, and even cardiovascular diseases. Endocrine features related to the diagnosis of PCOS or PCOD include elevated levels of certain hormones like androgens, luteinizing hormone, prolactin, and estrogen. Diagnostic criteria of the disease are having two out of the following symptoms: Hyperandrogenism, Oligomenorrhoea, or Polycystic appearance of the ovaries. Infertility, menstrual disturbances, and acne can be prevented by taking oral contraceptives, insulin lowering drugs, progestin therapy, and weight loss.