Anti-Müllerian hormone as a predictor of the number of oocytes obtained during in vitro fertilization treatments.

OBJECTIVE: To evaluate the correlation between serum anti-Müllerian hormone (AMH) and the number of oocytes retrieved after controlled ovarian stimulation for in vitro fertilization treatments and determine cut-off values predictive of poor and high response to stimulation. METHODS: It was performed a retrospective observational study that included 1003 cycles of controlled ovarian stimulation carried between February 2017 and December 2023 at a Medically Assisted Procreation Centre. The exclusion criteria were the following: serum AMH levels obtained more than 6 months prior to the start of the ovarian stimulation, the presence of a single ovary, non-Caucasian ethnicity, a controlled ovarian stimulation cycle performed for the purpose of oocyte donation or fertility preservation, a documented diagnosis of endometriosis, a documented history of ovarian surgery and the absence of essential data for the study in the medical records (absence of the number of oocytes obtained or the AMH value). Poor response to stimulation was defined as ≤ 3 oocytes retrieved, and high response was defined as > 15 oocytes. The correlation between variables was calculated using Spearman's correlation test and cut-off values were determined using ROC (Receiver Operating Characteristic) curves. RESULTS: AMH exhibited a significantly positive correlation with the number of oocytes retrieved (Spearman's correlation coefficient = 0.60, p<0.01). The predictive cut-off for poor ovarian response was 0.72 ng/mL (specificity of 95.13%, sensitivity of 43.23%), and the predictive cut-off for high ovarian response was 4.77 ng/mL (specificity of 89.86%, sensitivity of 38.22%). CONCLUSIONS: Serum AMH proved to be a good predictor of the ovarian response to controlled ovarian stimulation for in vitro fertilization treatments, which makes it useful in supporting clinical decision-making. However, it should not be used as an absolute discriminator of poor or high ovarian response.

Altered ovarian reserve in Ewe lambs exposed to a glyphosate-based herbicide.

Glyphosate-based herbicides (GBHs) are considered endocrine disruptors that affect the female reproductive tract of rats and ewe lambs. The present study aimed to investigate the impact of neonatal exposure to a low dose of a GBH on the ovarian follicular reserve of ewe lambs and the response to a gonadotropic stimulus with porcine FSH (pFSH). To this end, ewe lambs were orally exposed to an environmentally relevant GBH dose (1 mg/kg/day) or vehicle (Control) from postnatal day (PND) 1 to PND14, and then some received pFSH (50 mg/day) between PND41 and 43. The ovaries were dissected, and follicular types and gene expression were assessed via RT-PCR. The treatments did not affect the body weight of animals, but pFSH increased ovarian weight, not observed in GBH-exposed lambs. GBH-exposed lambs showed decreased Estrogen receptor-alpha (56%), Progesterone receptor (75%), Activin receptor II (ACVRII) (85%), and Bone morphogenetic protein 15 (BMP15) (88%) mRNA levels. Control lambs treated with pFSH exhibited downregulation of Follistatin (81%), ACVRII (77%), BMP15 (93%), and FSH receptor (FSHr) (72%). GBH-exposed lambs treated with pFSH displayed reduced ACVRII (68%), BMP15 (81%), and FSHr (50%). GBH-exposed lambs also exhibited decreased Anti-Müllerian hormone expression in primordial and antral follicles (27%) and (54%) respectively) and reduced Bone morphogenetic protein 4 (31%) expression in primordial follicles. Results suggest that GBH disrupts key follicular development molecules and interferes with pFSH action in ovarian receptors, decreasing the ovarian reserve. Future studies should explore whether this decreased ovarian reserve impairs adult ovarian function and its response to superovulation stimuli.

Anti-Müllerian hormone, testicular descent and cryptorchidism.

Anti-Müllerian hormone (AMH) is a Sertoli cell-secreted glycoprotein involved in male fetal sex differentiation: it provokes the regression of Müllerian ducts, which otherwise give rise to the Fallopian tubes, the uterus and the upper part of the vagina. In the first trimester of fetal life, AMH is expressed independently of gonadotropins, whereas from the second trimester onwards AMH testicular production is stimulated by FSH and oestrogens; at puberty, AMH expression is inhibited by androgens. AMH has also been suggested to participate in testicular descent during fetal life, but its role remains unclear. Serum AMH is a well-recognized biomarker of testicular function from birth to the first stages of puberty. Especially in boys with nonpalpable gonads, serum AMH is the most useful marker of the existence of testicular tissue. In boys with cryptorchidism, serum AMH levels reflect the mass of functional Sertoli cells: they are lower in patients with bilateral than in those with unilateral cryptorchidism. Interestingly, serum AMH increases after testis relocation to the scrotum, suggesting that the ectopic position result in testicular dysfunction, which may be at least partially reversible. In boys with cryptorchidism associated with micropenis, low AMH and FSH are indicative of central hypogonadism, and serum AMH is a good marker of effective FSH treatment. In patients with cryptorchidism in the context of disorders of sex development, low serum AMH is suggestive of gonadal dysgenesis, whereas normal or high AMH is found in patients with isolated androgen synthesis defects or with androgen insensitivity. In syndromic disorders, assessment of serum AMH has shown that Sertoli cell function is preserved in boys with Klinefelter syndrome until mid-puberty, while it is affected in patients with Noonan, Prader-Willi or Down syndromes.

Reduced embryo yield obtained from superstimulated ewes with low circulating AMH concentration is improved by lengthening the FSH treatment.

The aim of the present study was to evaluate: 1) the association between AMH, AFC, superovulatory response and embryo yield in sheep; and 2) the effect of FSH treatment length during superstimulation of the first follicular wave on ovarian response and embryo yield, particularly in ewes with low and high AMH. The experiment was performed on 63 Polled Dorset ewes that received an ovarian superstimulatory treatment during the first follicular wave (Day 0 protocol). Ewes were administered a total dose of 240 mg of FSH distributed in six (6-dose regimen, n = 30) or eight (8-dose regimen, n = 33) decreasing doses administered 12 h apart. On Day -9 (random stage of the estrous cycle) and Day 0 (day of the first FSH dose) ovarian ultrasonography was performed and blood samples were collected for AFC and AMH determinations, respectively. A weak positive correlation between AMH and small AFC (follicles <4 mm) was observed (r = 0.23; P = 0.07), and AMH concentration was positively correlated (r = 0.29; P < 0.05) with the number of corpora lutea (CL) determined at embryo collection (i.e., 6 d after insemination). The length of FSH treatment tended (P = 0.06) to affect the ovarian response, such that the number of CL was greater in 8-dose than 6-dose treated ewes, while no differences (P > 0.10) in embryo yield outcomes were observed. For further analysis, ewes were classified into low (<7 ng/mL) and high (>10 ng/mL) serum AMH. In high AMH ewes, there were no differences (P > 0.05) in the number of CL nor embryo yield between the 6-dose and 8-dose treatment (e.g., 7.8 ± 2.4 and 8.3 ± 2.5 transferable embryos, respectively; P = 0.92). Conversely, for low AMH ewes, fertilized ova and embryo yield were greater (P ≤ 0.05) for ewes receiving the 8-dose than the 6-dose superstimulatory treatment (e.g., 8.4 ± 2.8 vs. 2.7 ± 0.9 transferable embryos, respectively, P ≤ 0.05). In conclusion, embryo production in poor responding ewes with low low circulating AMH is improved by extending the superstimulatory treatment length from 6 to 8 FSH doses.

Serum anti-Müllerian hormone is lower in patients with multiple radioiodine dose for treatment of pediatric thyroid cancer.

Introduction: Treatment of patients with pediatric differentiated thyroid cancer (DTC) often involves radioiodine (RAI), which is associated with increased risks of short- and long-term adverse outcomes. The impact of RAI treatment on the female reproductive system remains uncertain. Anti-Müllerian hormone (AMH) is a marker of ovarian reserve and is related to fertility. Objective: The aim was to analyze the association between RAI and serum AMH level in women treated with RAI. Methods: We evaluated women with pediatric DTC treated with RAI at the age of ≤19 years. Serum AMH was measured. Results: The study included 47 patients with a mean age of 25.1 years (12.4-50.8) at AMH measurement and follow-up of 11.8 ± 8.4 years. The mean RAI administered was 235 mCi (30-1150). Sixteen (34%) received multiple RAI doses (471 ± 215 mCi). Mean AMH level was 2.49 ng/mL (0.01-7.81); the level was 1.57 ng/mL (0.01-7.81) after multiple RAI doses and 2.99 ng/mL (0.01-6.63) after a single RAI dose (P = 0.01). Patients who received a cumulative RAI lower than 200 mCi had higher AMH levels (2.23 ng/mL, 0.39-7.81) than those who received more (1.0 ng/mL, 0.01-6.63; P = 0.02). In patients with similar cumulative RAI activities, administration of multiple RAI doses was significantly and independently associated with AMH level lower than the reference range for age (HR: 5.9, 1.55-52.2, P = 0.014) after age adjustments. Conclusion: Levels of AMH were lower after multiple RAI doses, especially after a cumulative RAI dose above 200 mCi. More studies are needed to clarify the impact of RAI on fertility considering its cumulative activity and treatment strategy.

Morphohistometric and steroidogenic parameters during testicular and epididymal differentiation in cavy (Galea spixii) fetuses.

Sexual differentiation and steroidogenic mechanisms have an important impact on postnatal gonadal phenotypic development. Thus, establishing the activities that lead to male phenotypic development can provide a better understanding of this process. This study examined the prenatal development of cavies to establish morphological and histometric development patterns and protein and enzyme immunolocalization processes that are responsible for androgen synthesis in the testes and epididymis. Histological and histometric analyses of the diameter of the seminiferous cords and epididymal ducts of male fetuses on Days 25, 30, 40, and 50 were performed, as well as immunohistochemistry of the steroidogenic enzymes 5α-reductase and 17ß-HSD, the androgen receptor, and the anti-Müllerian hormone (AMH). Our findings showed a cellular grouping of gonocytes from Day 30 onward that was characteristic of the seminiferous cord, which was not present in the lumen at any of the studied dates. From Day 50 onward, the differentiation of the three anatomical regions of the epididymis was evident, the head (caput), body (corpus), and tail (cauda), with tissue distinctions. Furthermore, the diameters of the seminiferous cords and epididymal ducts significantly increased with age. On Day 50, the tail showed the greatest diameter of the three regions. The Sertoli and Leydig cells exhibited AMH immunoreactivity at all dates. In addition, the Leydig cells and epididymal epithelial tissue were immunopositive for 5α-reductase, 17ß-HSD, and the androgen receptor; therefore, these factors influenced the development and maintenance of the testis and epididymis during cavy prenatal development.

Frequency of diminished ovarian reserve in women with multiple sclerosis in Chile: An exploratory study.

INTRODUCTION: Multiple Sclerosis (MS) is a chronic disease affecting around 2.8 million people worldwide. Two-thirds are women, and the mean age at diagnosis is about 30 years old. Social trends are moving towards older age at first pregnancy, both in women with and without MS. OBJECTIVES: To determine the frequency of diminished ovarian reserve (DOR) through anti-Mullerian Hormone (AMH) measurement in women with MS at fertile age and Healthy Females (HF) in Chile. METHODS: Case-control, multicentric, cross-sectional study including relapsing-remitting people with MS (pwMS) between 18 and 40 years and sex and age-matched HF. We obtained a blood sample to determine AMH levels. We defined DOR as AMH <1.5 ng/mL and very-low AMH levels as <0.5 ng/mL. Also, we performed questions regarding reproductive decision-making. RESULTS: We included 79 sex and age-matched HF and 92 pwMS, median age 32(19-40) years, median disease duration 6 (1-17)years, median EDSS 1.0 (0-6), 95% were receiving disease-modifying therapy (DMT), 70% high-efficacy DMT and 37% with a treatment that contraindicates pregnancy. DOR was observed in 24% (n = 22) of the pwMS, compared to 14% (n = 11) of the HF (p = 0.09), while very-low AMH levels were observed in 7.6% (n = 7) of pwMS and none of the HF (p = 0.0166). We observed an inverse correlation between age and AMH levels. Age was the only significant risk factor for low AMH levels in pwMS (OR 1.14 95%CI(1.00-1-31), p = 0.04), including smoking, body mass index (BMI), hormonal contraception, autoimmune comorbidity, high/low-moderate efficacy DMT, and active disease as covariables. We did not find statistically significant differences in age at diagnosis, BMI, disease duration, EDSS, autoimmune comorbidity, use of hormonal contraception, or percentage of active disease between MS women with normal vs DOR. Over 70% of pwMS desired to become pregnant in the future, while 60% considered that the diagnosis of MS was a limitation for pregnancy planning. CONCLUSIONS: No differences in DOR, measured by levels of AMH, were observed between pwMS MS and HF in Chile. As expected, AMH levels were correlated only with ageing. This information may be evaluated early during the disease course to help patients and neurologists with fertility counselling and family planning considerations regarding DMT use.

Cord blood anti-Müllerian hormone levels are higher in female newborns from women with polycystic ovary syndrome (PCOS) when compared to non-PCOS controls, irrespective of body mass index; a prospective case-control study.

OBJECTIVE: To compare cord-blood anti-Müllerian hormone levels between female newborns from women with and without polycystic ovary syndrome. METHODS: A prospective case-control study was conducted in Ankara University School of Medicine, Department of Obstetrics and Gynecology between June 2020 and January 2021. In total, 408 women gave birth to a female during the study period. Of those, 45 had a polycystic ovary syndrome-like history. We did not find the preconceptional history of 16 women. Two women were excluded due to other endocrine disorders. The polycystic ovary syndrome group consisted of 27 women with polycystic ovary syndrome that gave birth to a female newborn during the study period and the non-polycystic ovary syndrome control group consisted of 33 women who had regular cycles prior to pregnancy, were never diagnosed with polycystic ovary syndrome, and gave birth to female newborns. The primary outcome measure was the cord-blood anti-Müllerian hormone levels. RESULTS: The median cord-blood anti-Müllerian hormone levels of female newborns from polycystic ovary syndrome patients were significantly higher than those in the non-polycystic ovary syndrome group (0.33ng/ml vs. 0.12ng/ml, respectively; p<0.001). In addition, cord blood anti-Müllerian hormone levels were significantly higher in both obese and non-obese polycystic ovary syndrome patients when compared to body-mass-index-matched non- polycystic ovary syndrome patients (0.37ng/ml vs. 0.06ng/ml, respectively; p=0.013 and 0.30ng/ml vs. 0.11 ng/ml, respectively; p=0.003). CONCLUSIONS: The cord blood anti-Müllerian hormone levels were higher in female newborns of women with polycystic ovary syndrome when compared to non-polycystic ovary syndrome controls. The effect of polycystic ovary syndrome seems to be greater than body mass index on cord blood anti-Müllerian hormone levels.

Anti-Müllerian Hormone levels after metformin treatment in polycystic ovary syndrome: A systematic review and meta-analysis.

This systematic review and meta-analysis aim to evaluate whether treatment with metformin would reduce Anti-Müllerian Hormone levels in patients with polycystic ovary syndrome. A search was performed in Medline, Embase, Web of Science, and Cochrane Library databases and grey literature (Google Scholar). The following keywords were used in the search strategy: "Polycystic Ovary Syndrome", "Anti-Mullerian Hormone", "Metformin". The search was limited to human studies, with no language restriction. 328 studies were found, 45 studies were selected for full-text reading and 16 of those studies, six randomized controlled trial and 10 non-randomized studies were included. The synthesis of randomized controlled trials, metformin showed a reduction in serum levels of Anti-Müllerian Hormone compared to control groups (SMD - 0.53, 95 %CI - 0.84 to - 0.22, p < 0.001, I2 = 0 %, four studies, 171 participants, high quality of evidence). Six non-randomized studies evaluated data before and after the metformin intervention. The synthesis showed that using metformin reduced serum Anti-Müllerian Hormone values (SMD - 0.79, 95 %CI - 1.03 to - 0.56, p < 0.001, I2 = 0 %, six studies, 299 participants, low quality of evidence). Metformin administration in women with polycystic ovary syndrome is associated significantly with reduced Anti-Müllerian Hormone serum levels.

Ovarian reserve in adolescent girls with autoimmune thyroiditis

ABSTRACT Objectives: To assess serum anti-Müllerian hormone (AMH) levels as an ovarian reserve marker in adolescent girls with autoimmune thyroiditis (AIT) and explore the relationship of this marker with autoimmunity and thyroid function biomarkers. Subjects and methods: This study included 96 adolescent girls with newly diagnosed AIT and 96 healthy, age- and sex-matched controls. All participants were evaluated with detailed history taking and physical examination, thyroid ultrasound, and measurement of levels of thyroid-stimulating hormone (TSH), free thyroxin (FT4), free triiodothyronine (FT3), antithyroid peroxidase antibodies (TPOAb), antithyroglobulin antibody (TGAb), estradiol, total testosterone, and anti-Müllerian hormone (AMH) levels. The LH/FSH ratio was also calculated. Among 96 patients evaluated, 78 were overtly hypothyroid and 18 were euthyroid. AMH levels were significantly lower in participants with overt hypothyroidism and euthyroidism compared with controls. Results: Serum levels of AMH correlated negatively with age, body mass index (BMI) standard deviation score (SDS), and TPOAb, TGAb, and TSH levels but positively with FT4 levels. In multivariate analysis, AMH levels correlated significantly with age (odds ratio [OR] = 1.65, 95% confidence interval [CI] 1.18-2.32, p = 0.05), BMI SDS (OR = 2.3, 95% CI, 2.23-3.50, p = 0.01), TSH (OR = 2.43, 95% CI 1.5-2.8, p = 0.01), and TPOAb (OR = 4.1, 95% CI 3.26-8.75, p = 0.001). Conclusions: Ovarian reserve of adolescent girls with AIT, as measured by serum AMH levels, is affected by thyroid autoimmunity and hypothyroidism, indicating a possible need for ovarian reserve monitoring in these patients.

Ovarian reserve in adolescent girls with autoimmune thyroiditis.

Objective: To assess serum anti-Müllerian hormone (AMH) levels as an ovarian reserve marker in adolescent girls with autoimmune thyroiditis (AIT) and explore the relationship of this marker with autoimmunity and thyroid function biomarkers. Subjects and methods: This study included 96 adolescent girls with newly diagnosed AIT and 96 healthy, age- and sex-matched controls. All participants were evaluated with detailed history taking and physical examination, thyroid ultrasound, and measurement of levels of thyroid-stimulating hormone (TSH), free thyroxin (FT4), free triiodothyronine (FT3), antithyroid peroxidase antibodies (TPOAb), antithyroglobulin antibody (TGAb), estradiol, total testosterone, and anti-Müllerian hormone (AMH) levels. The LH/FSH ratio was also calculated. Among 96 patients evaluated, 78 were overtly hypothyroid and 18 were euthyroid. AMH levels were significantly lower in participants with overt hypothyroidism and euthyroidism compared with controls. Results: Serum levels of AMH correlated negatively with age, body mass index (BMI) standard deviation score (SDS), and TPOAb, TGAb, and TSH levels but positively with FT4 levels. In multivariate analysis, AMH levels correlated significantly with age (odds ratio [OR] = 1.65, 95% confidence interval [CI] 1.18-2.32, p = 0.05), BMI SDS (OR = 2.3, 95% CI, 2.23-3.50, p = 0.01), TSH (OR = 2.43, 95% CI 1.5-2.8, p = 0.01), and TPOAb (OR = 4.1, 95% CI 3.26-8.75, p = 0.001). Conclusion: Ovarian reserve of adolescent girls with AIT, as measured by serum AMH levels, is affected by thyroid autoimmunity and hypothyroidism, indicating a possible need for ovarian reserve monitoring in these patients.

Relationship between the concentration of anti-Müllerian hormone and antral follicle count in pasture-managed Holstein cows in the high tropics.

We evaluated the relationship between plasma levels of anti-Müllerian hormone (AMH) and the number of antral follicles at the restart of the follicular wave in crossbred Holstein cows reared under extensive grazing systems over 2500 m above sea level. The study included 140 cows from 15 farms that were in average at the 75.3 ± 2.10 d post partum. Animals were synchronized according to the following regime: day 0 = intravaginal progesterone releasing device (IPD) + estradiol benzoate (EB); day 7: withdrawal of IPD + prostaglandin; and day 8: EB, for restart of the follicular wave on day 11. On this day 11, antral follicle counts (AFCs) were made by transrectal ultrasound, and a plasma sample was taken for the determination of AMH. The mean AMH plasma level was 0.06 ± 0.03 ng/ml and the mean AFC was 17.26 ± 0.38 follicles. A strong positive linear correlation was found between these two variables (r = 0.783, r = 0.613, P < 0.0001). Cows were categorized according to AMH concentration as high (>0.09 ng/ml), intermediate (0.09-0.05 ng/ml) or low (<0.05 ng/ml). Cows with high AMH presented a higher AFC (25.0 ± 2.21 follicles) than those with low AMH (14.08 ± 2.68 follicles; P < 0.001. Our results suggest that the cut-off value of AMH = 0.09 ng/ml may be useful for selecting donors in multiple ovulation embryo transfer programs involving cows with these characteristics. Our data further suggest that AMH plasma concentration correlates with AFC and can be used as an endocrine biomarker of the number of antral follicles present at a given moment of the estrous cycle in crossbred Holstein cows raised at altitudes above 2500 m.

The Effect of Laparoscopic Endometrioma Surgery on Anti-Müllerian Hormone: A Systematic Review of the Literature and Meta-Analysis.

OBJECTIVE: This study aimed to assess the effect of endometrioma surgery on ovarian reserve by measuring anti-Müllerian hormone (AMH) levels. METHODS: This systematic review and meta-analysis included observational studies and randomized clinical trials published in English referenced in MEDLINE, SCOPUS and Cochrane (1982-2019). We included studies that reported AMH levels in the pre and post-operative period of patients undergoing laparoscopic surgery for endometrioma. Preoperative AMH was defined as the baseline AMH; short term AMH was measured no later than a month after surgery; medium term AMH was measured between one and six months after surgery; and long-term AMH was measured six or more months after surgery. RESULTS: Thirty-six studies met the inclusion criteria. A significant decrease was observed in short, medium and long-term post-operative AMH levels when compared with baseline AMH. However, there were no differences between short and long-term post-operative AMH levels, suggesting a non-significant recovery after one year of follow-up. A significant decrease in post-operative AMH was observed in bilateral endometriomas compared with unilateral cases. In addition, patients with endometriomas presented a significant decline in post-operative AMH compared with patients with other benign ovarian conditions. The decrease in post-operative AMH was significantly greater in bilateral cystectomy when compared with vaporization with bipolar energy or laser. We also observed a greater decrease in post-operative AMH with bipolar energy hemostasis compared with suture and hemostatic agents. These results should be taken with caution due to the high heterogeneity of the studies analyzed. CONCLUSIONS: Endometrioma surgery has a deleterious effect on short, medium, and long-term post-operative AMH levels. Bilateral endometriomas and endometriomas greater than 7 cm have been associated with greater decreases in AMH. The mechanical resection of healthy tissue and the inflammatory damage on the ovarian cortex might explain the diminishing of ovarian reserve.

Evaluation of Protocols of Controlled Ovarian Stimulation in Obtaining Mature Oocytes (MII): Retrospective Study on Assisted Reproductive Technology Procedures.

OBJECTIVE: To understand which of the controlled ovarian stimulation (COS) protocols used in different patients are associated with greater amounts of oocytes retrieved. METHODS: The study population was divided into three groups, considering AMH and AFC to obtain the Ovarian Response Predictor Index (ORPI); they were grouped into: G1-Low Reserve (ORPI <0.5); G2-Normal Reserve (ORPI:0.5-0.9); and G3-High Reserve (ORPI≥0.9). 246 cycles were selected in which COS was used: recombinant FSH - follitropin alfa or beta (Protocol 1) or corifollitropin alfa (Protocol 2), both associated with urinary HMG and the GnRH antagonist, with the trigger performed using recombinant hCG or GnRH agonist. RESULTS: The number of oocytes obtained was higher in protocol 1 in all groups, with higher counts seen in G1 than in G2 or G3. The number of days required in COS for protocol 2 was greater than for protocol 1 in all groups. The total dose of recombinant FSH alfa or beta / urinary HMG used in protocol 1 was inversely proportional to the ovarian reserve. The lower the ORPI, the greater the average number of international units administered. In protocol 2, there was a need to supplement with higher doses of urinary HMG when compared to protocol 1. The dosage of the GnRH antagonist was dependent on the number of COS days until the trigger was used. In obtaining MII oocytes, the percentages were similar regardless of the trigger used. CONCLUSIONS: The use of follitropin leads to greater numbers of retrieved oocytes than corifollitropin alfa in all ORPIs. The dose of recombinant FSH used with urinary HMG increases inversely proportional to the ORPI value. The fixed dose of recombinant FSH deposit requires a sharp increase in the dose of urinary HMG.

Evaluation of the Anti-Müllerian Hormone and its Association with Embryo Quality in Advanced Reproductive Treatments in a Latin American Population.

OBJECTIVE: Serum anti-Müllerian hormone (AMH) presents a strong positive correlation with quantitative aspects of the ovarian reserve, while its correlation with embryo quality is unclear. This study assessed the association between serum AMH as a marker of ovarian reserve and embryo quality, in women undergoing in vitro fertilization. METHODS: This observational analytical retrospective study included patients seen between 2010 and 2018. In vitro fertilization patients with measured AMH levels were analyzed based on the following parameters: number of retrieved oocytes; number of metaphase II oocytes; embryo quality; and treatment outcome. Statistical analysis was performed using ANOVA, Mann-Whitney U test, linear regression, and Pearson and Spearman correlations. RESULTS: We found a positive correlation between AMH levels, number of retrieved oocytes and number of metaphase II oocytes (r 0.649, p=0.000). The numbers of retrieved and metaphase II oocytes were predicted in 42% (R2: 429) of the cases based on AMH levels (p=0.000). Serum AMH levels were not associated with embryo quality on Day 3 (p=0.151); an association was seen between AMH levels and embryo quality on Day 5 (p=0.006). The distribution of AMH levels was the same across patients, regardless of whether they were able to achieve pregnancy (p=0.767). CONCLUSIONS: AMH levels correlated with embryo quality on Day 5; no association was found between AMH levels and embryo quality on Day 3 or pregnancy rate. The use of AMH levels to predict embryo quality still requires further studies; therefore, AMH should be used to assess the ovarian reserve only.

Ovarian function following use of various hemostatic techniques during treatment for unilateral endometrioma: A randomized controlled trial.

OBJECTIVE: To compare the effect of hemostatic techniques (bipolar energy versus hemostatic sealants versus suture) on the ovarian reserve of patients submitted to laparoscopic cystectomy for the surgical excision of unilateral endometrioma. METHODS: A randomized controlled trial conducted in a teaching hospital included 84 patients with unilateral endometrioma. The patients underwent laparoscopic stripping for excision of the unilateral endometrioma between March 2018 and February 2020. Three different hemostatic techniques-bipolar energy (Group 1), hemostatic sealants (Group 2), and suture (Group 3)-were compared. Anti-Müllerian hormone (AMH) levels were measured before, and 1 and 6 months after surgery to determine changes in ovarian function. RESULTS: Following surgery, AMH levels decreased in all the groups; however, this decrease was not statistically significant. Comparison between groups showed no statistically significant differences in AMH levels between the three hemostatic techniques used. Six months after surgery, median AMH levels were: 1.65 ng/mL (interquartile range [IQR] 0.62-2.08 ng/mL) in Group 1, 1.87 ng/mL (IQR 1.27-2.97 ng/mL) in Group 2, and 1.53 ng/mL (IQR 1.18-2.44 ng/mL) in Group 3. CONCLUSION: The present study suggests that there is no difference between the different hemostatic techniques used in laparoscopic cystectomy for the treatment of unilateral endometriomas. Registered at ClinicalTrials.gov: NCT03430609. https://clinicaltrials.gov/ct2/show/NCT03430609.

Decreased ovarian reserve and ovarian morphological alterations in female rat offspring exposed to a ketogenic maternal diet

SUMMARY OBJECTIVE: This study evaluates the effects of a ketogenic diet on morphology and follicle reserve. METHOD: Sixteen Sprague-Dawley rats were randomized into two groups: standard diet group (n=8) and ketogenic diet group (n=8). Rats were time mated. Dams were permitted to deliver spontaneously. The animals were monitored for the onset of puberty. All the rats were weighed and anesthetized, serum anti-Müllerian hormone level was measured, and the oviducts were removed. The morphological characteristics of follicles were determined and total ovarian volumes were calculated. RESULTS: The mean ovarian volume was statistically significantly lower in the ketogenic diet group compared to the standard diet group (14.41±0.99 mm3 versus 18.89±1.28 mm3) (p=0.000). The mean number of antral follicles was 13.63±1.80 in the standard diet group and 4.462±0.760 in the ketogenic diet group. The mean ovarian weight of the ketogenic diet group was significantly lower than that of the standard diet group (0.42±0.06 g versus 0.815±107 g). The mean anti-Müllerian hormone levels were significantly higher in the standard diet group compared to the ketogenic diet group (1.023±4.75 ng/mL versus 0.69±0.07 ng/mL) (p=0.000). The mean percentage of staining of Ki-67 was 35.28±4.75 in the standard diet group and 16.98±3.33 in the ketogenic diet group (p=0.000). CONCLUSION: Maternal ketogenic diet reduces ovarian follicular reserve in female offspring and has important implications for maintaining reproductive potential at a population level.

Comparison of age-related anti Müllerian hormone, inhibin-b levels and follicle reserve in rat ovarium / Comparación de la hormona anti-mülleriana relacionada con la edad, los niveles de inhibina-b y la reserva folicular en el ovario de rata

SUMMARY: Anti-Müllerian hormone (AMH) and Inhibin B (INHB) in the glycoprotein structure are members of the transforming growth factor β family and expressed by granulosa cells from puberty. AMH is a factor that increases the life span of small developing follicles. For this reason, it is widely used to determine the ovarian reserve and age. Inhibin-B secreted from granulosa cells plays a role in regulation of the Follicle Stimulating Factor (FSH) and determination of the follicle diameter. There are few studies on the effect of these two age-related hormones on ovarian histology in rats. In this study, AMH and INHB expression in ovarian tissues of female rats of different age groups, their relationship with ovarian structure and folliculogenesis were examined histologically and biochemically. Wistar Albino rats were used in the study and a total of 3 groups were formed. The ovaries of rats in the pre-oestrous period were collected, and follicle count was performed on tissue sections in batches. Expression of AMH in the follicles was identified immunohistochemically. In serum, AMH and INHB levels were assessed by ELISA method and their significance was evaluated statistically. Results from light microscopic examination determined that AMH was expressed from the granulosa cells of developing follicles. INHB expression during the prepubertal period and AMH had a protective effect on the ovarian reserve and the number of developing follicles, respectively.

RESUMEN: La hormona antimülleriana (AMH) y la inhibina B (INHB) en la estructura de la glicoproteína son miembros de la familia del factor de crecimiento transformante β y se expresan en las células de la granulosa desde la pubertad. La AMH es un factor que aumenta la vida útil de los pequeños folículos en desarrollo. Por este motivo, se utiliza frecuentemente para determinar la reserva ovárica y la edad. La inhibina B secretada por las células de la granulosa tiene un rol en la regulación del factor estimulante de (FSH) y en la determinación del diámetro del folículo. Hay pocos estudios sobre el efecto de estas dos hormonas relacionadas con la edad en la histología ovárica en ratas. Se examinaron histológica y bioquímicamente la expresión de AMH e INHB en tejidos ováricos de ratas hembras de diferentes grupos de edad, su relación con la estructura ovárica y la foliculogénesis. Se utilizaron ratas Wistar Albino en el estudio y se formaron 3 grupos. En los ovarios de ratas en el período preestro se realizó el recuento de folículos en secciones de tejido. La expresión de AMH en los folículos se identificó inmunohistoquímicamente. En suero, los niveles de AMH e INHB se evaluaron mediante el método ELISA y su importancia se evaluó estadísticamente. Los resultados del examen con microscopio óptico determinaron que la AMH se expresaba a partir de las células de la granulosa de los folículos en desarrollo. La expresión de INHB durante el período prepuberal y AMH tuvo un efecto protector sobre la reserva ovárica y el número de folículos en desarrollo, respectivamente.

Live birth outcomes from IVF treatments in younger patients with low AMH.

OBJECTIVE: Anti-Müllerian hormone (AMH) is used to predict in vitro fertilization outcomes. However, predicting live birth is difficult in younger patients with low AMH. Thus, this study aimed to determine the live birth rates from younger patients with low anti-Müllerian hormone levels. METHODS: A total of 296 infertile patients with AMH measured (younger group, aged 25-38 years; older group, aged 39-42 years) were included in this study. In vitro fertilization outcomes between patients with AMH levels of <1.0ng/mL and ≥1.0ng/mL were compared. RESULTS: Younger patients with AMH levels <1.0ng/mL (younger low AMH group) exhibited lower number of oocytes retrieved than patients with AMH levels ≥1.0ng/mL (younger normal AMH group). However, there were no significant differences in cumulative pregnancy or cumulative live birth rates between groups. Older patients with AMH levels ≥1.0ng/mL (older normal AMH group) had significantly better outcomes as per mean number of oocytes, cumulative pregnancy rate, and cumulative live birth rate than older patients with AMH levels <1.0ng/mL (older low AMH group). In the younger low AMH group, the frequency of oocyte retrieval was significantly higher in patients who achieved live birth. In addition, the blastocyst transfer rate was significantly higher in individuals with live births versus subjects with non-live births. CONCLUSIONS: AMH is a predictor of live birth among older, but not younger, women. Our report suggests that younger women may become pregnant even with low AMH levels when they obtain blastocysts from frequent oocyte retrievals.

Different Clinical Manifestations Related to Subvirilization in Three XY Patients With the Same Pathogenic Variant of Steroidogenic Factor 1.

OBJECTIVE: During the prenatal period, steroidogenic factor 1 is required for the development of the adrenal glands and for gonadal determination and differentiation, and after birth, it regulates gonadal progenitor cell formation and their survival. Here, we describe the clinical phenotype of three 46,XY patients (2 brothers and an unrelated subject) with disorder of sex development due to the same genetic variant. METHODS: All patients underwent hormonal and pelvic ultrasound studies. Sequence analysis and deletion/duplication testing of a panel encompassing 8 genes (AR, DHH, MAP3K1, NROB1, SRD5A2, SRY, WT1, and nuclear receptor subfamily 5, group A, member 1 [NR5A1]) were performed in the index cases. All family members were tested for the presence of the NR5A1 variant. RESULTS: A variant previously described as likely pathogenic in NR5A1 (c.251G>A, p.Arg84His) that segregated in 1 family with different degrees of under-virilization was found. The family 1 index case (IV2) and his brother (IV3) had an external masculinization scale score of 5/12, but only the index case had Müllerian remnants; however, the family 2 patient had a milder score of 9/12. The older female relatives of family 1 who harbor this variant experienced premature menopause. CONCLUSION: To our knowledge, this is the first report where the c.251G>A (p.Arg84His) variant is associated with the presence of Müllerian remnants in 46,XY subjects and primary ovarian insufficiency in 46,XX individuals. The segregation of this variant with clinical manifestations provides further evidence for considering it as pathogenic.