SARS-COV-2 and Male Reproductive Health.

Critical challenges for the public and private health, research, and medical communities have been posed by the COVID-19 outbreak. Some of these challenges are related to the possible adverse effects of SARS-CoV-2 on male reproductive health, and whether other potential modes of transmission may occur, such as sexual transmission. Moreover, concerns have been raised in terms of whether the COVID-19 outbreak may have an impact on fertility worldwide.

Assisted reproductive technology outcomes in azoospermic men: 10 years of experience with surgical sperm retrieval.

An azoospermic man suffers from an absence of sperm in the ejaculate and this condition is present in about 10% of infertile men. Obstructive azoospermia (OA) is characterized by an occlusion or partial absence of the reproductive tract with the presence of normal spermatogenesis. On the other hand, non-obstructive azoospermia (NOA) is characterized by impaired spermatogenesis.

Contribution of in-vitro maturation in ovarian stimulation cycles of poor-responder patients.

This cohort study evaluated whether rescue spontaneous maturation (RSM) could be a valid method to increase the number of embryos available for transfer and whether transfers with RSM-derived embryos would contribute to clinical outcomes of poor-responder patients in ovarian stimulation cycles. The study included 440 patients undergoing intracytoplasmic sperm injection cycles in which fewer than five metaphase II (MII) oocytes and at least one immature oocyte were retrieved after follicle aspiration. Patients were allocated into two groups based on the injected oocytes' nuclear maturation status: MII group (n=330), in which only embryos derived from MII oocytes were transferred, and RSM group (n=110), in which at least one embryo derived from an RSM oocyte was transferred.

Current concepts and future trends in male germ cell cryobanking.

While the idea of freezing human male gametes has been experimented since the late 1700's, it was not until 50 years ago that human sperm were frozen, and later thawed in such a way that they could fertilize an egg and initiate development. In the past several decades the technology of cryopreservation, or maintaining life in a frozen state, has advanced considerably. With the use of modern techniques, cryopreservation of sperm to preserve an individual's ability to reproduce has become successful, safe, and widely available.

Negative influence of paternal age on clinical intracytoplasmic sperm injection cycle outcomes in oligozoospermic patients.

Objective: To evaluate the effect of male age on clinical outcomes of intracytoplasmic sperm injection (ICSI) cycles, according to sperm concentration.

Design: Retrospective, observational study.

Setting: Assisted reproduction center.

[Safe gametes acquisition through association of seminal processing techniques with HIV serodiscordant couples].

Purpose: the propose of this study was to analyze the clinical and laboratorial parameters of patients submitted to human assisted reproduction techniques with association of sperm processing techniques, in order to remove virus particles from semen samples of couples in which men was infected by human immunodeficiency virus (HIV).

Methods: assessed were 11 intracytoplasmatic sperm injection (ICSI) cycles from couples whose men were HIV seropositive (HIV Group), and 35 cycles in which semen donors' samples were used in ICSI procedures (Control Group). Semen samples from Control Group were submitted to routine semen analysis, sperm wash and cryopreservation.

Effect of cigarette smoking on antioxidant levels and presence of leukocytospermia in infertile men: a prospective study.

Objective: To evaluate the effect of cigarette smoking on antioxidant levels and the presence of leukocytospermia in infertile men.

Design: Prospective study.

Setting: Academic medical center.

A comparison of post-thaw results between embryos arising from intracytoplasmic sperm injection using surgically retrieved or ejaculated spermatozoa.

Objective: To study the effect of freeze-thaw on embryos derived from intracytoplasmic sperm injection (ICSI) using surgically retrieved and ejaculated spermatozoa.

Design: Retrospective study.

Setting: Private IVF center.

Prognostic value of meiotic spindle imaging on fertilization rate and embryo development in in vitro-matured human oocytes.

Objective: To evaluate the relationship between spindle visualization and intracytoplasmic sperm injection (ICSI) outcomes in controlled ovarian stimulation (COS) cycles.

Design: Prospective study.

Setting: Assisted reproduction center.

Spindle imaging: a marker for embryo development and implantation.

Objective: To examine whether the presence of birefringent spindles in living human oocytes can be used as a predictive factor associated with embryo morphology to allow embryo selection before transfer and its association with IVF outcomes.

Design: Prospective study.

Setting: Assisted reproduction center in Brazil.

Spontaneous recanalization after vasectomy.

Vasectomy is the method most commonly used in men for voluntary sterilization purposes. We report two cases of early recanalization following vasectomies performed in 1085 men for sterilization purposes at a tertiary public institution between January 2000 and November 2003. Thus, the risk of 0.

Semen quality and oxidative stress scores in fertile and infertile patients with varicocele.

Objective: To compare semen quality and levels of seminal oxidative stress among three groups: infertile men with varicocele, fertile men with varicocele, and healthy semen donors (controls) without varicocele.

Design: Prospective study.

Setting: Academic medical centers.

Use of pig oocytes for training new professionals in human assisted reproduction laboratories.

Objective: To evaluate whether swine oocytes are useful for training new technicians in a human reproduction laboratory.

Design: Prospective study.

Setting: Graduate school in assisted reproductive techniques (ART) in Brazil.

Fertilization and pregnancy outcome after intracytoplasmic injection with fresh or cryopreserved ejaculated spermatozoa.

Objective: To assess fertilization, implantation, and pregnancy rates in patients undergoing ICSI using fresh and cryopreserved sperm from ejaculated semen samples.

Design: Retrospective study.

Setting: Academic and private medical centers.

Clinical diagnosis in men undergoing infertility investigation in a university hospital.

Introduction: It was the aim of this study to assess whether the changes in the diagnostic techniques and treatment modalities have altered the epidemiology of male factor infertility in the last decade.

Material And Methods: From September 1999 to July 2003, 822 patients were evaluated for infertility in a University Hospital. We divided our infertility patients according to the clinical diagnosis.