Is the profile of transcripts altered in the eutopic endometrium of infertile women with endometriosis during the implantation window?

STUDY QUESTION: Compared to healthy women, is the profile of transcripts altered in the eutopic endometrium of infertile women with endometriosis during the implantation window (IW)? SUMMARY ANSWER: The eutopic endometrium of infertile women with endometriosis seems to be transcriptionally similar to the endometrium of infertile and fertile controls (FC) during the IW. WHAT IS KNOWN ALREADY: Endometriosis is a disease related to infertility; nevertheless, little is known regarding the ethiopathogenic mechanisms underlying this association. Some studies evaluating the eutopic endometrium of endometriosis patients suggest there is an endometrial factor involved in the disease-related infertility. However, no study to date has evaluated the endometrial transcriptome (mRNA and miRNA) by next generation sequencing (NGS), comparing patients with endometriosis as the exclusive infertility factor (END) to infertile controls (IC; male and/or tubal factor) and FC. STUDY DESIGN, SIZE, DURATION: From November 2011 to November 2015 we performed a case-control study, where 17 endometrial samples (six END, six IC, five FC) were collected during the IW. PARTICIPANTS/MATERIALS, SETTING, METHODS: All endometrial samples had the RNA extracted. Two libraries were prepared for each one (mRNA and miRNA), which were sequenced, respectively, at HISEQ 2500 (RNA-Seq) and MiSeq System (miRNA-Seq), Illumina. The normalization and differential expression were conducted in statistical R environment using DESeq2 package. qPCR was used for data validation, which were analyzed by Kruskal-Wallis test and Dunn posttest (P < 0.05). MAIN RESULTS AND THE ROLE OF CHANCE: RNA-Seq revealed no differentially expressed genes (DEG) among END, IC and FC groups. miRNA-Seq revealed three differentially expressed miRNAs (has-27a-5p, has-miR-150-5p, has-miR-504-5p) in END group compared to FC group. However, none of the miRNAs identified in the sequencing was validated by qPCR. LIMITATIONS, REASONS FOR CAUTION: The main limitation of this study was the small sample size evaluated as a result of the restrictive eligibility criteria adopted, limiting the generalization of the results obtained here. On the other hand, strict eligibility criteria, which eliminated factors potentially related to impaired endometrial receptivity, were required to increase the study's internal validity. WIDER IMPLICATIONS OF THE FINDINGS: This study brings new perspectives on the mechanisms involved in endometriosis-related infertility. The present findings suggest the eutopic endometrium of infertile women with endometriosis, without considering the disease's stage, is transcriptionally similar to controls during the IW, possibly not affecting receptivity. Further studies are needed to evaluate endometrial alterations related to endometriosis' stages. STUDY FUNDING/COMPETING INTEREST(S): This study received financial support from the Sao Paulo Research Foundation (FAPESP-Fundação de Amparo à Pesquisa do Estado de São Paulo; fellowship 2011/17614-6, MGB) and from the National Council for Scientific and Technological Development (CNPq-Conselho Nacional de Desenvolvimento Científico e Tecnológico; INCT-National Institutes of Hormones and Woman's Health, grant 471 943/2012-6, 309 397/2016-2, PAN; fellowship 140 137/2015-7, MGB). The authors have no conflicts of interest. TRIAL REGISTRATION NUMBER: N/A.

GnRH agonist during luteal phase in women undergoing assisted reproductive techniques: systematic review and meta-analysis of randomized controlled trials.

OBJECTIVE: To identify, evaluate and summarize the available evidence regarding the effectiveness and safety of administering a gonadotropin releasing hormone (GnRH) agonist during the luteal phase in women undergoing assisted reproductive techniques. METHODS: In this systematic review and meta-analysis, we searched for randomized controlled trials (RCTs) comparing the addition of a GnRH agonist during the luteal phase, compared with standard luteal-phase support. We searched seven electronic databases and hand-searched the reference lists of included studies and related reviews. Our primary outcome was live birth or ongoing pregnancy per randomized woman. Our secondary outcomes were clinical pregnancy per randomized woman, miscarriage per clinical pregnancy, adverse perinatal outcome and congenital malformations. RESULTS: The evidence from eight studies examining 2776 women showed a relative risk (RR) for live birth or ongoing pregnancy of 1.26 (95% CI, 1.04-1.53; I(2) = 58%). Sensitivity analysis when excluding the studies that did not report live birth and those at high risk of bias resulted in one study examining 181 women with an RR of 1.07 (95% CI, 0.73-1.58). Subgroup analysis separating the studies by single/multiple doses of GnRH agonists or by ovarian stimulation with GnRH agonist/antagonist was unable to explain the observed heterogeneity. The quality of the evidence was deemed to be very low: it was downgraded because of the limitation of the included studies, imprecision, inconsistency across the studies' results, and suspicion of publication bias. None of the included studies reported adverse perinatal outcomes or congenital malformations. CONCLUSIONS: There is evidence that adding GnRH agonist during the luteal phase improves the likelihood of ongoing pregnancy. However, this evidence is of very low quality and there is no evidence for adverse perinatal outcome and congenital malformations. We therefore believe that including this intervention in clinical practice would be premature.

Dydrogesterone vs progesterone for luteal-phase support: systematic review and meta-analysis of randomized controlled trials.

OBJECTIVES: To compare the effects of dydrogesterone and progesterone for luteal-phase support (LPS) in women undergoing assisted reproductive techniques (ART). METHODS: We performed a systematic review to identify relevant randomized controlled trials (RCTs) by searching the following electronic databases: Cochrane CENTRAL, PubMed, Scopus, Web of Science, ClinicalTrials.gov, ISRCTN Registry and WHO ICTRP. RESULTS: The last search was performed in October 2015. Eight RCTs were considered eligible and were included in the review and meta-analyses. There was no relevant difference between oral dydrogesterone and vaginal progesterone for LPS with respect to rate of ongoing pregnancy (risk ratio (RR), 1.04 (95% CI, 0.92-1.18); I(2) , 0%; seven RCTs, 3134 women), clinical pregnancy (RR, 1.07 (95% CI, 0.93-1.23); I(2) , 34%; eight RCTs, 3809 women) or miscarriage (RR, 0.77 (95% CI, 0.53-1.10); I(2) , 0%; seven RCTs, 906 clinical pregnancies). Two of the three studies reporting on dissatisfaction of treatment identified lower levels of dissatisfaction among women using oral dydrogesterone than among women using vaginal progesterone (oral dydrogesterone vs vaginal progesterone capsules: 2/79 (2.5%) vs 90/351 (25.6%), respectively; oral dydrogesterone vs vaginal progesterone gel: 19/411 (4.6%) vs 74/411 (18.0%), respectively). The third study showed no difference in dissatisfaction rate (oral dydrogesterone vs vaginal progesterone capsules: 8/96 (8.3%) vs 8/114 (7.0%), respectively). CONCLUSIONS: Oral dydrogesterone seems to be as effective as vaginal progesterone for LPS in ART cycles, and appears to be better tolerated . Copyright © 2015 ISUOG. Published by John Wiley & Sons Ltd.

Assessment of ovarian reserve by antral follicle count in ovaries with endometrioma.

OBJECTIVE: To evaluate whether the antral follicle count (AFC) is underestimated in the presence of an endometrioma. METHODS: This was a retrospective cohort study assessing all women undergoing in-vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) at our clinic between January 2011 and December 2012 who had both ovaries and unilateral endometrioma. The primary outcome of the study was the difference between AFC and the number of oocytes retrieved per ovary. RESULTS: Within the study period 787 women underwent IVF/ICSI at our clinic. Sixty of these women had at least one endometrioma, but 23 were excluded from the analysis as six had only one ovary and 17 had bilateral endometriomas. Therefore a total of 37 women were included in this study and analysis. Compared with the contralateral ovaries, ovaries with an endometrioma were significantly larger in volume (median, 10.3 (interquartile range (IQR), 4.7-18.9) cm(3) vs median, 3.6 (IQR, 2.7-6.5) cm(3); P < 0.001) and presented a significantly lower AFC (median, 3.0 (IQR, 1.0-6.0) vs median, 5.0 (IQR, 2.0-6.5); P = 0.001). However, the median number of oocytes retrieved was similar (P = 0.60) between ovaries with an endometrioma (2.0 (IQR, 0.5-5.0)) and the contralateral ovaries (2.0 (IQR, 0.0-4.0)). Accordingly, the median difference between AFC and number of oocytes retrieved was significantly smaller (P = 0.005) for ovaries with an endometrioma (0.0 (IQR, -1.0 to 1.5) than for those without (2.0 (IQR, 0.0-4.0)). CONCLUSIONS: Although the AFC is reduced in ovaries with an endometrioma, the number of oocytes retrieved is similar, suggesting that the AFC is underestimated in such ovaries. We believe that this is a consequence of an impaired ability to detect small follicles in the presence of an endometrioma.

Ovarian response is a better predictor of clinical pregnancy rate following embryo transfer than is thin endometrium or presence of an endometrioma.

OBJECTIVES: To examine whether endometrial thickness and the presence of endometrioma are independent predictors of clinical pregnancy rate or simply associated with poor ovarian response (POR). METHODS: This was a retrospective cohort study assessing the first cycle of all women undergoing in-vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) in a university hospital in Brazil between January 2011 and December 2012. Only the first cycle of each woman within the study period was considered. Women over 40 years of age and those who used clomiphene citrate during controlled ovarian stimulation (COS) or did not undergo embryo transfer were excluded from analysis. POR was defined as ≤ three oocytes retrieved and a thin endometrium was defined as endometrial thickness ≤ 7.0 mm on the day of human chorionic gonadotropin (hCG) administration. We performed a multiple regression analysis to identify which of the following parameters were independent predictors of clinical pregnancy: age, number of oocytes retrieved, endometrial thickness or the presence of endometrioma. RESULTS: Within the study period, 787 women began COS, but 270 were excluded from analysis. Among the 517 women analyzed, those who achieved pregnancy were younger and yielded more oocytes. The proportion of POR was higher in women with a thin endometrium (17/57 (29.8%) vs 80/460 (17.4%); P = 0.03) and in women with endometrioma (15/39 (38.5%) vs 82/478 (17.2%); P = 0.002). The results of regression analysis showed that only age and the number of oocytes retrieved were independent predictors of pregnancy. Additionally, we observed higher clinical pregnancy rates in women with a thin endometrium from whom ≥ seven oocytes were retrieved (11/25 (44.0%)) compared to women with normal endometrial thickness (99/241 (41.1%)). Considering only women from whom ≥ four oocytes were retrieved, we observed reasonable pregnancy rates in those with a thin endometrium (14/40 (35.0%)) and in those with endometrioma (9/24 (37.5%)). CONCLUSION: Both a thin endometrium and the presence of endometrioma are associated with POR but are not important independent predictors of clinical pregnancy. Good pregnancy rates can be observed when these conditions are present in women with a good ovarian response.

Effect of intracervical anesthesia on pain associated with the insertion of the levonorgestrel-releasing intrauterine system in women without previous vaginal delivery: a RCT.

STUDY QUESTION: Is the pain associated with levonorgestrel-releasing intrauterine system (LNG-IUS) insertion reduced by intracervical anesthesia in women without previous vaginal birth? SUMMARY ANSWER: Intracervical anesthesia was not associated with reduced pain in women without previous vaginal birth. WHAT IS KNOWN ALREADY: The pain associated with the insertion of intrauterine contraceptives (IUCs) is a limiting factor for the use of these contraceptives by some women. No prophylactic pharmacological intervention has proven efficacy in relieving pain during or after the insertion of IUCs. However, previous studies included women with previous vaginal delivery, and injectable intracervical anesthesia was not evaluated in any of these studies. STUDY DESIGN, SIZE, DURATION: This was a randomized, open, parallel-group clinical trial that evaluated 100 women without previous vaginal delivery who wished to use the LNG-IUS for the first time. These women were evaluated immediately after LNG-IUS insertion and then 2 h and 6 h later. PARTICIPANTS/MATERIALS, SETTING, METHODS: The 100 women were randomized into two groups: (i) use of a non-steroidal anti-inflammatory drug (NSAID) (ibuprofen, 400 mg) 1 h prior to LNG-IUS insertion; or (ii) 2% lidocaine intracervical injection 5 min prior to LNG-IUS insertion. The women were evaluated immediately after LNG-IUS insertion and then 2 h and 6 h after insertion. Two pain scales were used (the visual analogue scale and the facial pain scale) in addition to assessing the ease of insertion (as rated by the provider) and the level of discomfort during the procedure (as rated by the patient). Multivariate logistic regression was performed to analyze the predictors associated with moderate/severe pain. MAIN RESULTS AND THE ROLE OF CHANCE: The pain and discomfort associated with LNG-IUS insertion, and the ease of insertion of the LNG-IUS did not differ between the groups. Nulliparity was more associated with moderate/severe pain [adjusted odds ratio (OR): 3.1 (95% confidence interval (CI): 1.3-7.80]. Injectable intracervical anesthesia use reduced the risk of moderate/severe pain by 40% [adjusted OR: 0.6 (95% CI: 0.2-1.4)]. The difference between the mean pain score in the intracervical anesthesia group and the NSAID group was <10%; thus, the effect size of the intervention was not significant. LIMITATIONS, REASONS FOR CAUTION: Intracervical anesthesia was compared with an oral medication in this study. Intracervical injection of a saline solution or even a dry needling as the placebo for a double-blind study could be a more adequate control; however, this approach was not a protocol approved by the institutional review board. Considering that the majority of the insertions were easy (>80% in both groups), the results may not be extrapolated to difficult insertions with moderate/severe pain where local anesthesia may have a role. WIDER IMPLICATIONS OF THE FINDINGS: The findings can be generalized to most insertions in nulliparous women or in those without a previous vaginal delivery. There is currently no evidence to recommend the routine use of prophylactic intracervical anesthesia prior to LNG-IUS insertion; there is no evidence that this treatment reduces insertion-related pain. STUDY FUNDING/COMPETING INTERESTS: RAF and CSV give occasional lectures for Bayer Healthcare. This study received funding from the National Institute of Hormones and Women's Health, National Council for Scientific and Technological Development (CNPq). TRIAL REGISTRATION NUMBER: NCT02155166.

Follicular fluid from infertile women with mild endometriosis may compromise the meiotic spindles of bovine metaphase II oocytes.

STUDY QUESTION: What is the potential impact of follicular fluid (FF) from infertile women with mild endometriosis (ME) on oocyte quality, especially on nuclear maturation and the meiotic spindle? SUMMARY ANSWER: FF from infertile women with ME may compromise nuclear maturation and the meiotic spindles of in vitro matured bovine oocytes. WHAT IS KNOWN ALREADY: Controversial studies have suggested that impaired oocyte quality may be involved in the pathogenesis of endometriosis-related infertility. Moreover, some studies have demonstrated alterations in the composition of FF from infertile women with endometriosis. However, to date no study has evaluated the effect of FF from infertile women with ME on the genesis of meiotic oocyte anomalies. STUDY DESIGN, SIZE, DURATION: We performed an experimental study. Samples of FF were obtained from February 2009 to February 2011 from 22 infertile women, 11 with ME and 11 with tubal or male factors of infertility (control group), who underwent ovarian stimulation for ICSI at our university IVF Unit. From March 2011 to February 2012 we performed in vitro maturation (IVM) experiments using immature bovine oocytes as described below. PARTICIPANTS/MATERIALS, SETTING, METHODS: FF free of blood and containing a mature oocyte was obtained from 22 infertile women during oocyte retrieval for ICSI. Immature bovine oocytes underwent IVM in the absence of FF (No-FF) and in the presence of four concentrations (1, 5, 10 and 15%) of FF from infertile women without endometriosis (C-FF) and with ME (ME-FF). Eleven replicates were performed, each one using FF from a control patient and a patient with ME. Each FF sample was used in only one experiment. After 22-24 h of IVM, oocytes were denuded, fixed and immunostained for morphological visualization of microtubules and chromatin by confocal microscopy. MAIN RESULTS AND THE ROLE OF CHANCE: A total of 1324 cumulus-oocyte complexes were matured in vitro. Of these, 1128 were fixed and 1048 were analyzed by confocal microscopy. The percentage of meiotically normal oocytes was significantly higher for oocytes that underwent IVM in the absence of FF (No-FF; 76.5%) and in the presence of 1% (80.9%), 5% (76.6%), 10% (75%) and 15% (76.2%) C-FF than in oocytes that underwent IVM in the presence of 1% (44.4%), 5% (36.7%), 10% (45.5%) and 15% (51.2%) ME-FF (P < 0.01). No differences were observed among FF concentrations within each group. When the four concentrations from each group were pooled, the number of oocytes in metaphase I stage was significantly higher in the ME-FF (50 oocytes) than in the C-FF (29 oocytes) group and the percentage of meiotic abnormalities was significantly higher when oocytes were matured with ME-FF (55.8%) than with C-FF (23.1%), P < 0.01. LIMITATIONS, REASONS FOR CAUTION: Owing to the strict selection criteria for FF donors, this study had a small sample size (11 cases and 11 controls), and thus further investigations using a large cohort of patients are needed to confirm these results. In addition, data obtained from studies using animal models may not necessarily be extrapolated to humans and studies evaluating in vivo matured oocytes from infertile women with ME are important to confirm our results. WIDER IMPLICATIONS OF THE FINDINGS: Our results open new insights into the pathogenic mechanisms of infertility related to mild endometriosis, suggesting that FF from infertile women with mild endometriosis may be involved in the worsening of oocyte quality of these women. STUDY FUNDING/COMPETING INTEREST(S): This study was supported by the National Council for Scientific and Technological Development (CNPq), Brazil. The authors declare no conflicts of interest.

Impact of endometriosis and its staging on assisted reproduction outcome: systematic review and meta-analysis.

OBJECTIVE: To evaluate whether the presence or severity of endometriosis affects the outcome of assisted reproductive techniques (ART). METHODS: In this systematic review, all studies comparing the outcome of ART in women with and those without endometriosis, or at different stages of the disease, were considered eligible. We used either risk ratio (RR) or mean difference (MD) and their 95%CIs for comparisons. The primary outcome was live birth; the secondary outcome was clinical pregnancy. Miscarriage and the number of oocytes retrieved were examined as additional outcomes. RESULTS: We included 92 studies in the review and 78 in the meta-analysis: 20,167 women with endometriosis were compared with 121,931 women without endometriosis, and 1703 women with Stage-III/IV endometriosis were compared with 2227 women with Stage-I/II endometriosis. The following results were observed for the comparison of women with endometriosis vs women without endometriosis: live birth, RR = 0.99 (95%CI, 0.92-1.06); clinical pregnancy, RR = 0.95 (95%CI, 0.89-1.02); miscarriage, RR = 1.31 (95%CI, 1.07-1.59); number of oocytes retrieved, MD = -1.56 (95%CI, -2.05 to -1.08). The following results were observed for the comparison of women with Stage-III/IV vs Stage-I/II endometriosis: live birth, RR = 0.94 (95%CI, 0.80-1.11); clinical pregnancy, RR = 0.90 (95%CI, 0.82-1.00); miscarriage, RR = 0.99 (95%CI, 0.73-1.36); number of oocytes retrieved, MD = -1.03 (95%CI, -1.67 to -0.39). CONCLUSIONS: Women with endometriosis undergoing ART have practically the same chance of achieving clinical pregnancy and live birth as do women with other causes of infertility. No relevant difference was observed in the chance of achieving clinical pregnancy and live birth following ART when comparing Stage-III/IV with Stage-I/II endometriosis. The quality of the evidence for the additional examined outcomes was very low, not allowing meaningful conclusions to be drawn.

Time-lapse embryo imaging for improving reproductive outcomes: systematic review and meta-analysis.

OBJECTIVE: To identify, appraise and summarize the available evidence regarding the effectiveness and safety of time-lapse embryo monitoring on the main outcomes of assisted reproductive techniques. METHODS: In this systematic review and meta-analysis, we included only randomized controlled trials (RCTs) comparing time-lapse embryo imaging with standard embryo monitoring. Our primary outcomes were live births (efficacy) and congenital abnormalities (safety). The secondary outcomes were clinical pregnancy, ongoing pregnancy and miscarriage. RESULTS: Two RCTs were considered eligible, and their data were extracted and included in a meta-analysis. In both studies embryos were transferred at the blastocyst stage. No studies reported rates of live birth or congenital abnormalities. Our estimates were not sufficiently precise to identify whether time-lapse monitoring provided a small benefit, no effect or minor harm on rates of clinical pregnancy (relative risk (RR), 1.05 (95% CI, 0.80-1.38)) or ongoing pregnancy (RR, 1.05 (95% CI, 0.76-1.45)), based on two studies involving 138 women with moderate-quality evidence. Considering the available data, we were unable to determine whether the intervention poses substantial benefit, no effect or substantial harm in the risk of miscarriage (RR, 0.95 (95% CI, 0.30-2.99)), based on two studies involving 76 clinical pregnancies with low-quality evidence. CONCLUSIONS: Time-lapse embryo imaging is unlikely to have a large effect on the chance of achieving clinical and/or ongoing pregnancy when transferring embryos at the blastocyst stage. More studies are required to improve the quality of the current evidence and also to examine whether this intervention is useful when transferring embryos at the cleavage stage.

Serum markers of oxidative stress and endometriosis.

PURPOSE OF INVESTIGATION: To assess the changes secondary to chronic inflammation in women with and without pelvic endometriosis by the determination of serum thiols and carbonyls. MATERIALS AND METHODS: Sixty-seven women with endometriosis consecutively submitted to laparoscopy and 41 women without endometriosis consecutively submitted to tubal ligation (control group) were selected. Serum levels of total thiols and carbonyls were determined in both groups. RESULTS: Patients with endometriosis had significantly lower thiol levels than controls (342.37 +/- 142.09 microM vs 559.60 +/- 294.05 microM) (p < 0.001), as well as significantly lower carbonyl levels (8.97 +/- 3.76 microM vs 16.40 +/- 9.26 microM) (p < 0.001). Other clinical characteristics were not associated with changes in marker levels. The cutoff point established by the ROC curve was 396.44 microM for the thiols, with 73.1% sensitivity and 80.5% specificity, and 14.9 microM for the carbonyls, with 94% sensitivity and 51.2% specificity. CONCLUSIONS: The serum thiol levels revealed an increase in oxidative stress related to the development of pelvic endometriosis.

Endometrial scratching performed in the non-transfer cycle and outcome of assisted reproduction: a randomized controlled trial.

OBJECTIVES: To investigate the effect of endometrial scratching, performed during oral contraceptive pill (OCP) pretreatment, on reproductive outcome and on ultrasound markers of endometrial receptivity, and to assess the pain involved in the procedure, in unselected women undergoing assisted reproductive techniques (ART). METHODS: Women undergoing ART were randomly allocated to undergo either endometrial scratching with a pipelle de Cornier or a sham procedure, 7-14 days before starting controlled ovarian stimulation (COS). We evaluated subsequent rates of clinical pregnancy, live birth, implantation, miscarriage and multiple pregnancy. Pain during the procedure was evaluated using a 10-cm visual analog scale. Endometrial thickness and volume and three-dimensional power Doppler (3D-PD) indices (vascularization index (VI), flow index (FI) and vascularization flow index (VFI)) were assessed during COS when there was at least one follicle ≥ 17 mm in diameter. RESULTS: We included 158 women. Endometrial scratching was associated with higher rates of live birth (41.8% vs 22.8%, P = 0.01) and clinical pregnancy (49.4% vs 29.1%, P = 0.01) and higher pain score (6.42 ± 2.35 cm vs 1.82 ± 1.52 cm, P < 0.001), endometrial VI (3.71 ± 1.77 vs 2.95 ± 1.56, P < 0.01) and VFI (0.97 ± 0.51 vs 0.76 ± 0.40, P < 0.01). There was no significant effect of endometrial scratching on rate of miscarriage (15.4% vs 21.7%, P = 0.53) or multiple pregnancy (22.5% vs 25.0%, P = 0.79), or on endometrial thickness (10.12 ± 1.55 mm vs 9.98 ± 1.62 mm, P = 0.59), endometrial volume (6.18 ± 1.63 cm(3) vs 6.01 ± 1.48 cm(3) , P = 0.51) or FI (26.12 ± 2.82 vs 25.91 ± 2.72, P = 0.65). CONCLUSIONS: Endometrial scratching performed once, during OCP pretreatment 7-14 days before starting COS, increases the chance of live birth and clinical pregnancy, but might cause considerable pain.

Ultrasonographic and laboratory markers of metabolic and cardiovascular disease risk in obese women with polycystic ovary syndrome.

OBJECTIVE: To evaluate whether the presence of polycystic ovary syndrome (PCOS) alters multiple ultrasonographic and laboratory markers of metabolic and cardiovascular disease risk in obese women without any other health condition that could interfere with combined oral contraceptive (COC) eligibility criteria. METHODS: This was a case-control study evaluating 90 obese women (body mass index (BMI) ≥ 30.0 kg/m(2) and < 40 kg/m(2)) aged between 18 and 40 years without any other health condition that could interfere with COC eligibility criteria, of whom 45 had PCOS and 45 were age-matched controls. BMI, waist and hip circumference, arterial blood pressure, fasting insulin and glucose, quantitative insulin sensitivity check index (QUICKI), high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, total cholesterol, triglycerides, testosterone, sex hormone-binding globulin, free androgen index (FAI), carotid stiffness index, intima media thickness, flow-mediated dilatation (FMD) of the brachial artery and non-alcoholic fatty liver disease (NAFLD) were assessed. RESULTS: In women with PCOS, we observed a higher frequency of NAFLD (73.3 vs. 46.7%, P < 0.01) and higher FAI (10.4 vs. 6.8%, P < 0.01). We also observed a trend towards increased insulin levels (10.06 ± 6.66 vs. 7.45 ± 5.88 µIU/mL, P = 0.05), decreased QUICKI (0.36 ± 0.06 vs. 0.39 ± 0.07, P = 0.05) and decreased FMD (7.00 ± 3.87 vs. 8.41 ± 3.79%, P = 0.08). No other significant difference was observed. CONCLUSIONS: NAFLD is frequent in obese women without any other health condition that could interfere with COC eligibility criteria, especially in those with PCOS. This should be considered when choosing the best contraceptive option.

A standardized measurement technique may improve the reliability of measurements of endometrial thickness and volume.

OBJECTIVE: To investigate whether standardization of the multiplanar view (SMV) when evaluating the uterus using three-dimensional ultrasonography (3D-US) improves intra- and interobserver reliability and agreement with regard to endometrial measurement. METHODS: Two-dimensional (2D) and 3D-US was used to measure endometrial thickness by two observers in 30 women undergoing assisted reproduction treatment. Endometrial volume was measured with Virtual Organ Computer-aided AnaLysis (VOCAL(™)) in the longitudinal (A) and coronal (C) planes using an unmodified multiplanar view (UMV) and a standardized multiplanar view (SMV). Measurement reliability was evaluated by intraclass correlation coefficient (ICC) and agreement was examined using Bland-Altman plots with limits of agreement (LoA). The ease of outlining the endometrial-myometrial interface was compared between the A- and C-planes using subjective assessment. RESULTS: Endometrial volume measurements using the SMV and A-plane were more reliable (intra- and interobserver ICCs, 0.979 and 0.975, respectively) than were measurements of endometrial thickness using 2D-US (intra- and interobserver ICCs, 0.742 and 0.702, respectively) or 3D-US (intra- and interobserver ICCs, 0.890 and 0.784, respectively). The LoAs were narrower for SMV than for UMV. Reliability and agreement were not much different between the A- and C-planes. However the observers agreed that delineating the endometrial-myometrial interface using the A-plane was easier (first and second observer, 50.0 and 46.7%, respectively) or 'comparable' (50 and 53.3%, respectively), but never more difficult than using the C-plane. CONCLUSIONS: Endometrial volume measurements are more reliable than endometrial thickness measurements and are best performed using SMV and the A-plane.

Anti-müllerian hormone is the best predictor of poor response in ICSI cycles of patients with endometriosis.

PURPOSE: To correlate ovarian reserve (OR) markers with response in assisted reproduction techniques (ART) and determine their ability to predict poor response among patients with endometriosis (EDT). METHODS: We evaluated ART cycles of 27 women with EDT and 50 with exclusive male factor. Basal follicle stimulating hormone (FSH) and anti-müllerian hormone (AMH) levels were determined. Ovarian response to gonadotropin stimulation was assessed and correlation coefficients calculated between the variables and reserve markers. Areas under the curve (AUC) determined ability of tests to predict poor response. RESULTS: AMH was significantly correlated with response in both groups and it was the only marker with significant discriminative capacity to predict poor response among EDT (AUC = 0.842; 95% CI: 0.651-0.952) and control group (AUC = 0.869; 95% CI: 0.743-0.947). CONCLUSION: Infertile patients with endometriosis can benefit from the pre-therapeutic assessment of OR markers. However, regardless of disease presence, only AMH predicts poor response to stimulus.

Role of paraoxonase-1 as a diagnostic marker for feline infectious peritonitis.

Feline infectious peritonitis (FIP) is characterised by the presence of systemic inflammation accompanied by oxidative stress. Paraoxonase-1 (PON-1) is a negative acute phase reactant produced by the liver. A paraoxon-based method has been validated to measure PON-1 activity in feline serum. The aim of this study was to investigate the usefulness of PON-1 activity as a biomarker to discriminate FIP from other diseases with similar clinical signs. Of 159 cats enrolled, 71 were healthy, 34 had FIP and 54 had another disease but presented with clinical signs that could be consistent with FIP. PON-1 activity was lower (P <0.0001) in cats with FIP (median, 26.55 U/L; range, 5.40-78.20 U/L) compared to healthy (median, 87.5 U/L; range, 46.60-215.50 U/L) and Non-FIP Sick group cats (median, 57.90 U/L; range, 3.80-122.60 U/L). Two receiver operating characteristic curves were used to determine the thresholds that maximised the performance of PON-1 activity in predicting FIP both from a screening and diagnostic point of view. A threshold of 78.30 U/L yielded a sensitivity of 100%, a specificity of 50.4%, and a negative likelihood ratio of 0.00 (screening curve). While a threshold of 24.90 U/L maximised specificity (94.4%), had a sensitivity of 44.1%, and increased the likelihood ratio to 7.94, making PON-1 activity a good confirmatory test for FIP (diagnostic curve). Using these thresholds, serum PON-1 activity showed good diagnostic performance in discriminating FIP affected cats from cats with other inflammatory conditions.

High prevalence of polycystic ovary syndrome in women born small for gestational age.

BACKGROUND: There is evidence that intrauterine growth restriction, resulting in newborn girls that are small for gestational age (SGA), may be related to the onset of polycystic ovary syndrome (PCOS). Thus, we studied whether women born SGA have a higher prevalence of PCOS than women born appropriate for gestational age (AGA). METHODS: This was a prospective birth cohort study of 384 women born at term between June 1, 1978, and May 31, 1979, in Ribeirão Preto, Brazil. After exclusion, 165 women effectively participated in this study, of whom 43 were SGA and 122 were AGA. The prevalence of PCOS was analysed. At a mean age of 29 years, the women agreed to follow the study protocol, which included: anamnesis, physical examination, serum tests [follicle stimulating hormone, luteinizing hormone, total and free testosterone, dehydroepiandrostenedione sulphate, 17-OH-progesterone, fasting insulin, sex steroid-binding globulin (SHBG) and fasting glucose] and pelvic ultrasound. Data regarding gestational age, birthweight, age at menarche and maternal data were obtained from the files of the cohort. The adjusted relative risk (RR) values of the SGA, insulin resistance, body mass index, maternal smoking and parity variables were analysed using Poisson regression with robust adjustment of variance for the prediction of PCOS. RESULTS: The prevalence of PCOS was higher in the SGA group than in the AGA group [adjusted RR = 2.44, 95% CI (1.39-4.28)]. Hyperandrogenism was more prevalent in the SGA women than in the AGA women (P = 0.011). Circulating SHBG was lower in the SGA women than in the AGA women (P = 0.041), but fasting insulinemia was similar in both groups. CONCLUSIONS: The prevalence of PCOS in SGA women was twice as high as in AGA women in our study population.

Quantitative three-dimensional power Doppler angiography: a flow-free phantom experiment to evaluate the relationship between color gain, depth and signal artifact.

OBJECTIVES: To evaluate the presence of false flow three-dimensional (3D) power Doppler signals in 'flow-free' models. METHODS: 3D power Doppler datasets were acquired from three different flow-free phantoms (muscle, air and water) with two different transducers and Virtual Organ Computer-aided AnaLysis was used to generate a sphere that was serially applied through the 3D dataset. The vascularization flow index was used to compare artifactual signals at different depths (from 0 to 6 cm) within the different phantoms and at different gain and pulse repetition frequency (PRF) settings. RESULTS: Artifactual Doppler signals were seen in all phantoms despite these being flow-free. The pattern was very similar and the degree of artifact appeared to be dependent on the gain and distance from the transducer. False signals were more evident in the far field and increased as the gain was increased, with false signals first appearing with a gain of 1 dB in the air and muscle phantoms. False signals were seen at a lower gain with the water phantom (-15 dB) and these were associated with vertical lines of Doppler artifact that were related to PRF, and disappeared when reflections were attenuated. CONCLUSIONS: Artifactual Doppler signals are seen in flow-free phantoms and are related to the gain settings and the distance from the transducer. In the in-vivo situation, the lowest gain settings that allow the detection of blood flow and adequate definition of vessel architecture should be used, which invariably means using a setting near or below the middle of the range available. Additionally, observers should be aware of vertical lines when evaluating cystic or liquid-containing structures.

Preliminary comparative serological evaluation of Histamine H2 receptors in dogs with an acute onset of vomiting treated with Ranitidine and healthy dogs.

Despite the lack of evidence of the ability to suppress gastric acid secretion in dogs, ranitidine (RT) is often used to control clinical signs in dogs with acute vomiting even if the way it happens it is still largely unknown. The aim of this study was thus to evaluate the therapeutic effect of ranitidine on H2 receptors in dogs with acute vomiting. To investigate the RT activity a preliminary study was performed in dogs which underwent gastroscopy analyses, demonstrating that the level of H2R observed in the serum and gastric wall tissue was the same [1.473(1.30; 1.79) ng/ml and 1.498 (1.33; 1.85) ng/ml, respectively]. After that H2R levels in the serum of 22 healthy dogs (Group 1) and in a group of 22 dogs with acute vomiting (Group 2) were compared both before (T0), after 7-10 days (T1) of 2 mg/kg twice a day ranitidine administration and after 11 days since the drug was discontinued (T2). Significant differences (p<0.001) were detected between the level of circulating H2R among Group 1: 0.41 ng/ml (0.28;0.54) and Group 2: 2.27 ng/ml (2.11;2.49) at T0. In Group 2, no difference in the level of H2R was detected in samples collected at T0 compared to those at T1 [T1: 2.32 ng/ml (2.14; 2.49)] and T2 [T2: 2.30 ng/ml (1.99;2.69)]. In Group 2 all patients but one displayed remission of symptoms attributable to inflammatory gastropathy at the first withdrawal (T1: 7-10 days), while at the second withdrawal (T2: after 21 days), remission was detected in all dogs. Our preliminary hypothesis is that the clinical efficacy of ranitidine is related to the greater expression of H2 receptors in patients with acute vomiting. This increased expression may be due to continuous pathological stimulus at the gastric level. Further studies with a wider population are needed to better investigate the activity of RT in dogs with acute onset of vomiting.