Effect of zinc on sperm recovered by swim-up.

Purpose: Zinc is known to influence chromatin stability, motility and protection against oxidative stress. While swim-up remains the preferred method for selecting sperm in Assisted Reproductive Technologies (ART), concerns arise regarding sperm DNA fragmentation associated with this procedure. Given zinc's significant role in protecting sperm DNA integrity and motility, we aimed to investigate the impact of zinc supplementation during the swim-up process on sperm quality.

Evaluation of urinary N-acetyl-beta-D-glucosaminidase as a marker of early renal damage in patients with type 2 diabetes mellitus.

Objective: To evaluate the clinical usefulness of urinary N-acetyl-beta-D-glucosaminidase (NAG) excretion for the detection of early tubular damage in type 2 diabetes mellitus (T2DM).

Subjects And Methods: Thirty six patients with T2DM were divided into two groups based on urinary albumin to creatinine ratio (ACR): normoalbuminuria (ACR <30 mg/g; n=19) and microalbuminuria (ACR =30-300 mg/g; n=17). The following parameters were determined in both groups: urinary NAG and albumin, serum and urine creatinine, fasting plasma glucose and glycated hemoglobin (HbA1c).

[Macrophages in human semen].

Objectives: To investigate the presence of macrophages in human semen samples and the function they carry out in the seminal fluid. Their presence was studied in relation to spermatic morphology, percentage of spermatozoids with native DNA, and presence of antispermatic antibodies.

Methods And Results: The work was performed with semen samples from 31 unfertile males from 63 couples in which the "female factor" was ruled out as the cause of infertility.