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  • Original Article

    Endometriosis, Ovarian Reserve and Live Birth Rate Following In Vitro Fertilization/Intracytoplasmic Sperm Injection

    Rev Bras Ginecol Obstet. 2016;38(5):218-224

    Summary

    Original Article

    Endometriosis, Ovarian Reserve and Live Birth Rate Following In Vitro Fertilization/Intracytoplasmic Sperm Injection

    Rev Bras Ginecol Obstet. 2016;38(5):218-224

    DOI 10.1055/s-0036-1584126

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    Abstract

    Purpose

    To evaluate whether women with endometriosis have different ovarian reserves and reproductive outcomes when compared with women without this diagnosis undergoing in vitro fertilization/intracytoplasmic sperm injection ( IVF/ ICSI), and to compare the reproductive outcomes between women with and without the diagnosis considering the ovarian reserve assessed by antral follicle count ( AFC ).

    Methods

    This retrospective cohort study evaluated all women who underwent IVF/ ICSI in a university hospital in Brazil between January 2011 and December 2012. All patients were followed up until a negative pregnancy test or until the end of the pregnancy. The primary outcomes assessed were number of retrieved oocytes and live birth. Women were divided into two groups according to the diagnosis of endometriosis, and each group was divided again into a group that had AFC 6 (poor ovarian reserve) and another that had AFC 7 (normal ovarian reserve). Continuous variables with normal distribution were compared using unpaired t-test, and those without normal distribution, using Mann-Whitney test. Binary data were compared using either Fisher's exact test or Chi-square (2) test. The significance level was set as p < 0.05.

    Results

    787 women underwent IVF/ICSI (241 of which had endometriosis). Although the mean age has been similar between women with and without the diagnosis of endometriosis (33.8 4 versus 33.7 4.4 years, respectively), poor ovarian reserves were much more common in women with endometriosis (39.8 versus 22.7%). The chance of achieving live birth was similar between women with the diagnosis of endometriosis and those without it (19.1 versus 22.5%), and also when considering only women with a poor ovarian reserve (9.4 versus 8.9%) and only those with a normal ovarian reserve (25.5 versus 26.5%).

    Conclusions

    Women diagnosed with endometriosis are more likely to have a poor ovarian reserve; however, their chance of conceiving by IVF/ICSI is similar to the one observed in patients without endometriosis and with a comparable ovarian reserve.

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  • Original Article

    Twin pregnancy with one fetal beath

    Rev Bras Ginecol Obstet. 1999;21(4):223-226

    Summary

    Original Article

    Twin pregnancy with one fetal beath

    Rev Bras Ginecol Obstet. 1999;21(4):223-226

    DOI 10.1590/S0100-72031999000400007

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    Purpose: to evaluate retrospectively the obstetrical and perinatal aspects of multiple pregnancies with the death of one fetus. Methods: a retrospective study on 26 pregnant women with multiple pregnancies and death of one twin. A conservative approach was followed and the patients were followed-up clinically with blood clotting tests. Results: in 50% of the cases fetal death occurred between 20 and 32 weeks of pregnancy. The time between death and resolution of pregnancy ranged from 6 to 148 h. Death of the other twin occurred in two cases. In 15 cases, the surviving twin had a good course, with two of them presenting slight neurological sequelae. In the other nine cases the other twin died after birth. No pregnant woman developed coagulation disorders.

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  • Original Article

    Evaluation of meiotic abnormalities of oocytes from polycystic ovary syndrome patients submitted to ovarian stimulation

    Rev Bras Ginecol Obstet. 2008;30(5):241-247

    Summary

    Original Article

    Evaluation of meiotic abnormalities of oocytes from polycystic ovary syndrome patients submitted to ovarian stimulation

    Rev Bras Ginecol Obstet. 2008;30(5):241-247

    DOI 10.1590/S0100-72032008000500006

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    PURPOSE: to evaluate the meiotic spindle and the chromosome distribution of in vitro matured oocytes obtained from stimulated cycles of infertile women with polycystic ovary syndrome (PCOS) and with male factor and/or tubal infertility (Control Group) and compare in vitro maturation (IVM) rates between the groups analyzed. METHODS: five infertile patients with PCOS and eight controls, submitted to stimulated cycles for intracytoplasmic sperm injection, were selected prospectively and consecutively, and respectively assigned to the study group and the Control Group. Immature oocytes (21 and 29, respectively, from PCOS and Control Group) were submitted to IVM. After IVM, oocytes with first polar body extruded were fixed and submitted to immunostaining and fluorescence microscopy for morphological evaluation of the spindle and of chromosome distribution. Statistical analysis was performed by the Fisher test with significance, when p<0.05. RESULTS: IVM rates were similar between groups (47.6 e 44.8%, respectively, for PCOS and Control Group). Six of the ten oocytes (60%) from the study group and four of the 12 oocytes (33.3%) from the Control Group presented meiotic anomalies of the spindle and/or anomalous chromosome distribution, without statistical difference between groups. CONCLUSIONS: data from the present study did not demonstrate significant difference neither in IVM rates nor in the proportions of meiotic anomalies between in vitro matured oocytes obtained from stimulated cycles from PCOS patients and control ones.

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  • Review Article

    Common Dysregulated Genes in Endometriosis and Malignancies

    Rev Bras Ginecol Obstet. 2016;38(5):253-262

    Summary

    Review Article

    Common Dysregulated Genes in Endometriosis and Malignancies

    Rev Bras Ginecol Obstet. 2016;38(5):253-262

    DOI 10.1055/s-0036-1583293

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    Abstract

    Several authors have investigated the malignant transformation of endometriosis, which supports the hypothesis of the pre-neoplastic state of endometriotic lesions, but there are few data about the pathways and molecular events related to this phenomenon. This review provides current data about deregulated genes that may function as key factors in the malignant transition of endometriotic lesions. In order to do so, we first searched for studies that have screened differential gene expression between endometriotic tissues and normal endometrial tissue of women without endometriosis, and found only two articles with 139 deregulated genes. Further, using the PubMed database, we crossed the symbol of each gene with the terms related to malignancies, such as cancer and tumor, and obtained 9,619 articles, among which 444 were studies about gene expression associated with specific types of tumor. This revealed that more than 68% of the analyzed genes are also deregulated in cancer. We have also found genes functioning as tumor suppressors and an oncogene. In this study, we present a list of 95 informative genes in order to understand the genetic components that may be responsible for endometriosis' malignant transformation.

    However, future studies should be conducted to confirm these findings.

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  • Original Article

    Serum markers of oxidative stress in infertile women with endometriosis

    Rev Bras Ginecol Obstet. 2010;32(6):279-285

    Summary

    Original Article

    Serum markers of oxidative stress in infertile women with endometriosis

    Rev Bras Ginecol Obstet. 2010;32(6):279-285

    DOI 10.1590/S0100-72032010000600005

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    PURPOSE: to compare serum markers of oxidative stress between infertile patients with and without endometriosis and to assess the association of these markers with disease staging. METHODS: this was a prospective study conducted on 112 consecutive infertile, non-obese patients younger than 39 years, divided into two groups: Endometriosis (n=48, 26 with minimal and mild endometriosis - Stage I/II, and 22 with moderate and severe endometriosis - Stage III/IV) and Control (n=64, with tubal and/or male factor infertility). Blood samples were collected during the early follicular phase of the menstrual cycle for the analysis of serum malondialdehyde, glutathione and total hydroxyperoxide levels by spectrophotometry and of vitamin E by high performance liquid chromatography. The results were compared between the endometriosis and control groups, stage I/II endometriosis and control, stage III/IV endometriosis and control, and between the two endometriosis subgroups. The level of significance was set at 5% (p<0.05) in all analyses. RESULTS: vitamin E and glutathione levels were lower in the serum of infertile women with moderate/severe endometriosis (21.7±6.0 mMol/L and 159.6±77.2 nMol/g protein, respectively) compared to women with minimal and mild endometriosis (28.3±14.4 mMol/L and 199.6±56.1 nMol/g protein, respectively). Total hydroxyperoxide levels were significantly higher in the endometriosis group (8.9±1.8 µMol/g protein) than in the Control Group (8.0±2 µMol/g protein) and among patients with stage III/IV disease (9.7±2.3 µMol/g protein) compared to patients with stage I/II disease (8.2±1.0 µMol/g protein). No significant differences in serum malondialdehyde levels were observed between groups. CONCLUSIONS: we demonstrated a positive association between infertility related to endometriosis, advanced disease stage and increased serum hydroxyperoxide levels, suggesting an increased production of reactive species in women with endometriosis. These data, taken together with the reduction of serum vitamin E and glutathione levels, suggest the occurrence of systemic oxidative stress in women with infertility associated with endometriosis. The reproductive and metabolic implications of oxidative stress should be assessed in future studies.

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  • Original Article

    Lipid peroxidation and vitamin E in serum and follicular fluid of infertile women with endometriosis submitted to controlled ovarian hyperstimulation

    Rev Bras Ginecol Obstet. 2007;29(6):303-309

    Summary

    Original Article

    Lipid peroxidation and vitamin E in serum and follicular fluid of infertile women with endometriosis submitted to controlled ovarian hyperstimulation

    Rev Bras Ginecol Obstet. 2007;29(6):303-309

    DOI 10.1590/S0100-72032007000600005

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    PURPOSE: to assess the level of lipid peroxidation (LP) and vitamin E in the follicular fluid and serum of infertile patients, with or without endometriosis, submitted to induction of ovulation for assisted reproduction procedures. METHODS: infertile patients aged 20 to 38 years old were selected prospectively and consecutively and divided into Endometriosis Group (17 patients with pelvic endometriosis) and Control Group (19 patients with previous tubal ligation or with male factor). Blood samples were collected on: D1 (before the beginning of the use of gonadotrophins), D2 (day of human chorionic gonadotrofin application) and D3 (day of oocyte retrieval). On D3, follicular fluid samples free from blood contamination were also collected and stored. LP was assessed for malondialdehyde (MDA) quantification by spectrophotometry, and antioxidant status by measurement of vitamin E by HLPC. RESULTS: on D1, no significant difference in LP was observed between groups. However, vitamin E levels were significantly higher in the Control Group. On D2, LP levels were significantly higher in the Endometriosis Group compared to Control and vitamin E levels continued to be significantly higher in the Control Group. On D3, there was no significant difference in both serum and follicular fluid levels of LP or vitamin E between groups. However, on D3, vitamin E levels were found to be significantly higher in serum than in follicular fluid in both groups, whereas MDA levels were significantly lower in follicular fluid than in serum only in the Control Group. CONCLUSION: before the beginning of the induction of ovulation, a significant decrease in antioxidant status was observed in patients with endometriosis, perhaps because antioxidants are consumed during oxidation reactions. After the induction of ovulation with exogenous gonadotrophins, the group of patients with endometriosis presented not only increased lipid peroxidation compared to Control, but also maintained a lower antioxidant status than the Control Group. However, on the day of oocyte retrieval, both serum LP potential and the levels of vitamin E were found to be similar in both groups.

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  • Editorial

    COVID-19 and Assisted Reproduction: A Point of View on the Brazilian Scenario

    Rev Bras Ginecol Obstet. 2020;42(6):305-309

    Summary

    Editorial

    COVID-19 and Assisted Reproduction: A Point of View on the Brazilian Scenario

    Rev Bras Ginecol Obstet. 2020;42(6):305-309

    DOI 10.1055/s-0040-1713795

    Views2
    The Epidemic of COVID-19 in Brazil and Worldwide The world is experiencing a pandemic with no recent similar events, caused by the new coronavirus (SARS-CoV-2). Since December 31, 2019, when the World Health Organization (WHO) was informed about the first cases of pneumonia in the city of Wuhan, Hubei province, China, the disease (COVID-19) spread […]
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  • Original Article

    Natural latex (Hevea brasiliensis) mold for neovaginoplasty

    Rev Bras Ginecol Obstet. 2008;30(1):31-35

    Summary

    Original Article

    Natural latex (Hevea brasiliensis) mold for neovaginoplasty

    Rev Bras Ginecol Obstet. 2008;30(1):31-35

    DOI 10.1590/S0100-72032008000100006

    Views2

    PURPOSE: to evaluate the use of natural latex mold (Hevea brasiliensis) as a modification of McIndoe and Bannister neovaginoplasty in patients presenting Mayer-Rokitansky-Küster-Hauser (MKRH) syndrome. METHODS: we retrospectively included nine patients presenting MKRH syndrome, who had been submitted to McIndoe and Bannister neovaginoplasty modified by the use of natural latex mold. Neovaginal epithelization and depth, coitus occurrence and satisfaction, and surgical complications were evaluated. RESULTS: five weeks after the procedure, eight patients presented an epithelized 7 to 12 cm deep neovagina. There was one case of complete neovaginal stenosis, because of incorrect use of the mold. After at least one year, the others maintained 4 to 8 cm deep neovaginas and capacity for intercourse, with 66.7% satisfaction. One woman presented precocious rectovaginal fistula and late episodes of uretrovaginal fistulae. Two patients presented distal neovaginal stenosis in long-term follow-up. One of these and the patient with fistulae were submitted to a new procedure. CONCLUSIONS: the use of natural latex mold as a modification of classic neovaginoplasty technique allows the creation of neovaginas morphologically and functionally similar to the normal vagina in patients with vaginal agenesis.

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    Natural latex (Hevea brasiliensis) mold for neovaginoplasty

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