Roberto Matorras

Introduction Scientific evidence has shown that regular physical activity (PA) is beneficial to health. However, no consensus has been reached on the association between PA and the success rates of assisted reproduction treatments. The purp…

PurposeTo investigate if there are natural killer (NK) cells in endometrial fluid (EF) and their relationship with the endometrial cycle and reproductive parameters.MethodsThe population under study consisted of 43 women aged 18-40 undergoi…

Is there a relationship between endometriosis and placenta previa (PP)? To investigate if there is a relationship between endometriosis and PP, a retrospective study was carried out, using prospectively recorded data from two different data…

Study questionIs it possible to use free and extracellular vesicle-associated microRNAs (miRNAs) from human endometrial fluid (EF) samples as non-invasive biomarkers for implantative endometrium?Summary answerThe free and extracellular vesi…

PurposeSome microbiota patterns have been associated with favorable IVF prognosis and others with pathological conditions. The endometrial fluid aspirate (EFA) contains antibacterial proteins that are enriched in implantative IVF cycles, bu…

fertilisation (IVF) results, a meta-analysis of 15 cohort studies of 3711 women undergoing IVF was performed. Women were classified into three groups according their vitamin D levels (≥30 ng/mL considered replete/sufficient; 21-29 ng/mL ins…

ObjectiveTo study the dynamics of the expression and localization of the mu opioid receptor (MOR) in human endometrium throughout the menstrual cycle.DesignAnalysis of human endometrial samples from different menstrual cycle phases (menstru…

In this retrospective study, the efficiency of carrying out rescue intrauterine insemination (IUI) in low-responder patients undergoing IVF when no oocytes were retrieved after follicular aspiration and when HCG timing was adequate was anal…

OBJECTIVE: To assess the value of the levonorgestrel-releasing intrauterine device (LNG-IUD) in the treatment of pelvic pain in patients with endometriosis in which previous medical and surgical treatments have failed. STUDY DESIGN: This pr…

ObjectiveThe purpose of this study was to compare the pregnancy rate in an artificial insemination donor program in women with minimal endometriosis and in women without endometriosis.Study designA prospective double-blinded study was condu…

The endometrial fluid is a noninvasive sample which contains numerous secreted proteins representative of endometrial function and reflects the state of the endometrium. In this study, we describe, for the first time, a comprehensive catalo…

BACKGROUND: The development of non-invasive diagnostic methods for endometriosis requires sensitive and disease specific biomarkers. Here, we describe the use of aspirated endometrial fluid from women with and without endometriosis as a nov…

Endometriosis is associated with a number of immunologic alterations. It has been suggested that autoimmune disorders could be more frequent in patients with endometriosis. The aim of this study is to ascertain whether the prevalence of two…

BACKGROUND: The study was conducted to compare the results of intrauterine donor insemination (DI) under ovarian stimulation with either clomiphene citrate (CC), in a fixed protocol, or FSH, with ovarian monitoring. METHODS: Forty-nine pati…

ObjectiveTo estimate the risk of recurrence after administration of hormone replacement therapy (HRT) among women who have had endometriosis and who underwent bilateral salpingo-oophorectomy (BSO).DesignProspective randomized trial (115 wom…

ObjectiveTo compare the prevalence of endometriosis and its different stages in infertile women and women not exposed to spermatozoa.DesignProspective study.SettingArtificial insemination donor program at a university hospital.Patient(s)One…

ObjectiveTo ascertain if there is an association between endometriosis and spontaneous abortion.DesignProspective cohort study.SettingMedical School Hospital.Population174 infertile women laparoscopically diagnosed with endometriosis and 17…

ObjectiveOur purpose was to assess the physical signs and clinical symptoms associated with endometriosis in infertile women.Study designThis case-control study was carried out in an academic tertiary hospital. There were 174 infertile wome…