Juan A Garcia-Velasco

Research rarely progresses in a straight line. It is more like an unpredictable front, marked by bursts of brilliance that fade after a few years, sudden breakthroughs, periods of stagnation, rediscoveries of forgotten ideas and occasional …

STUDY QUESTION: What are the clinical pregnancy and live birth rates in women who underwent up to two more euploid blastocyst transfers after three failures in the absence of another known factor that affects implantation? SUMMARY ANSWER: …

Endometrial receptivity and its management in assisted reproduction is now a significant focus of research interest. Endometrial receptivity tests, which analyze different panels of gene expression, are usually offered in fertility clinics …

Although a wealth of data has been published regarding fertility preservation (FP) in women with malignant diseases who receive gonadotoxic treatment, the role of FP in non-malignant conditions has been studied to a much lesser extent. Thes…

Research question: Urine LH testing may be useful to confirm an LH surge after the GnRH agonist (GnRHa) trigger prior to oocyte retrieval in IVF. Design: A prospective cohort study, including oocyte donors undergoing ovarian stimulation, tr…

CONTEXT: The widespread distribution of the Vitamin D (VitD) receptor in reproductive tissues suggests an important role for VitD in human reproduction. The assessment of patient´s VitD is based on the 25-hydroxyvitamin D (25(OH)D) metaboli…

BACKGROUND: Endometriosis is known to have an impact on fertility and it is common for women affected by endometriosis to require fertility treatments, including in vitro fertilisation (IVF) or intracytoplasmic sperm injection (ICSI), to im…

Many women with endometriosis experience compromised fertility. This disease clearly exerts quantitative damage on the ovaries, and perhaps, also qualitative damage. However, it remains controversial whether endometrial receptivity is compr…

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Endometrial receptivity is still questioned today in women with endometriosis. The aim of this study was to assess the endometrial receptivity gene signature in patients with different stages of endometriosis by investigating transcriptomic…

table of contents † Endometriomas and ovarian responsiveness † Endometrioma-related impact on ovarian responsiveness: a primary or a secondary event? † Treatment prior to IVF † The risks of surgery or expectant management

OBJECTIVE: To evaluate IVF outcome in women with unoperated bilateral endometriomas. DESIGN: Multicenter retrospective cohort study. SETTINGS: Two infertility units. PATIENT(S): Thirty-nine women with bilateral endometriomas matched with…

Outcomes of in vitro fertilization cycles in women with endometriosis are significantly worse than in patients without this condition. The impact of endometriosis on ovarian reserve and the quality of retrieved oocytes seems evident. Lower …

OBJECTIVE: To study the levels of four markers of oxidative stress in follicular fluid (FF) and plasma of patients with infertility related to endometriosis and controls. DESIGN: Experimental study. SETTING: University-affiliated hospital…

PURPOSE OF REVIEW: To summarize the literature related to the value of surgery in endometrioma-associated infertility and present the most recent evidence in support or against the surgical removal of endometriomas with special attention be…

BACKGROUND: There is a growing consensus that ovarian endometriomas should not be systematically removed in women selected for IVF. However, some recent evidence suggested that the presence of these cysts may negatively affect the course of…

The use of aromatase inhibitors (AIs) in IVF patients remains controversial. AIs can be considered for ovulation induction for IVF in women who are normal and poor responders, are at risk of ovarian hyperstimulation syndrome or thrombosis, …

Previous studies in an experimental mouse model of endometriosis have shown that the dopamine agonist (DA) cabergoline (Cb2) reduces angiogenesis and endometriotic lesions, hypothetically binding to the dopamine receptor type-2 (DRD2). To d…

The classic, unproven dogma that ovarian endometrioma should be removed in all infertile women prior to IVF has been recently questioned. There is currently insufficient data to clarify whether the endometrioma-related damage to ovarian res…

OBJECTIVE: To investigate whether conservative surgery on ovarian endometriomas before an IVF cycle improves fertility outcomes. DESIGN: Retrospective, matched case-control study. SETTING: Two academic IVF programs. PATIENT(S): One hundr…