Serum inhibin-B and follicle stimulating hormone as predictors of the presence of sperm in testicular fine needle aspirate in men with azoospermia.

Objective: Inhibin-B (Inh-B) is produced by Sertoli cells and controls Follicle Stimulating Hormone (FSH) secretion through a negative feedback mechanism. The primary aim of this study was to compare Iotanh-B with FSH as predictors of the recovery of sperm in testicular fine needle aspirate in men with azoospermia.

Design: In 51 men with azoospermia basal values of Luteinizing Hormone (LH), FSH, prolactin and testosterone as well as Inh-B values before and 24 h and 48 h after the administration of 300 IU recombinant human FSH were determined.

Serum inhibin B and anti-Müllerian hormone are not superior to follicle-stimulating hormone as predictors of the presence of sperm in testicular fine-needle aspiration in men with azoospermia.

Objective: To compare FSH, inhibin B (INHB), and anti-Müllerian hormone (AMH) as predictors of the recovery of sperm in testicular fine-needle aspiration biopsy (FNA) performed in men with azoospermia.

Design: Cross-sectional, clinical study.

Setting: Academic Unit of Reproductive Endocrinology.

Cryopreservation of human embryos by vitrification or slow freezing: a systematic review and meta-analysis.

Objective: To examine the literature systematically in order to identify prospective comparative trials answering the following question: Is vitrification of human embryos associated with a higher postthawing survival rate as compared with slow freezing?

Design: Systematic review and meta-analysis.

Setting: University-based hospital.

Patient(s): Not applicable.

Serum anti-Müllerian hormone levels differentiate control from subfertile men but not men with different causes of subfertility.

Aim: To determine stimulated serum anti-Mllerian hormone (AMH) levels in men with different causes of subfertility.

Subjects And Methods: We prospectively studied 82 subfertile men and 31 controls. The subfertile men underwent a diagnostic procedure to identify the causes of subfertility.

Evaluation of a transfer medium containing high concentration of hyaluronan in human in vitro fertilization.

Objective: To examine whether a high concentration of recombinant hyaluronan in the embryo transfer (ET) medium can influence pregnancy rates in humans.

Design: Retrospective, matched group study.

Setting: Private and university hospital in vitro fertilization (IVF) units.

The effects of sperm quality on embryo development after intracytoplasmic sperm injection.

Purpose: To explore the possible relationship between sperm quality and embryo development, pregnancy and implantation rates, in patients undergoing intracytoplasmic sperm injection (ICSI).

Methods: Fertilization and cleavage rates, quality of embryos, blastocyst development, pregnancy and implantation rates were analyzed in 1020 embryos from 219 couples undergoing first ICSI treatment cycle. The couples were allocated in five groups, according to semen parameters: Group 1: patients with normal semen parameters, Group 2: patients with mild oligo-astheno-teratozoospermia, Group 3: patients with severe oligo-astheno-teratozoospermia, Group 4: patients with obstructive azoospermia, Group 5: patients with non-obstructive azoospermia.