Publications by authors named "A Agha-Rahimi"

Background: Single sperm cryopreservation (SSC) is a method that preserves the limited number of spermatozoa in testicular sperm. But testicular spermatozoa are characterized with low movement, which is not ideal for sperm selection before SSC.

Objective: This study was designed to investigate in vitro incubation (IVC) as a sperm selection technique before SSC on biological factors of testicular spermatozoa.

View Article and Find Full Text PDF

Background Sperm selection from the population of processed spermatozoa cells after density gradient centrifugation (DGC) can assist embryologists in selecting high-quality sperm. Sperm selection of low-quality and chromatin-damaged spermatozoa is inevitable in severe teratozoospermia semen specimens. This study was conducted to evaluate whether sperm selection at ×400 magnification enables embryologists to select a population of spermatozoa with low DNA fragmentation and high sperm telomere length (STL) in semen samples with severe teratozoospermia.

View Article and Find Full Text PDF

Background: Single sperm cryopreservation (SSC) is a specific technique especially used in individuals with small numbers of sperm who suffered from non-obstructive azoospermia (NOA). Testicular specimens possess poor motility and low population of viable spermatozoa. Therefore, sperm selection methods such as applying pentoxifylline (PTX) may improve motility in these cases.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to assess how artificial seminal fluid (ASF) affects the quality of sperm collected from azoospermic men, compared to a standard medium (Ham's F10).
  • Results showed that testicular sperm improved in motility and mitochondrial membrane potential (MMP) after 2 hours in ASF, while epididymal sperm did not display significant improvements in either medium after 24 hours.
  • The findings suggest that testicular sperm benefit more from ASF in a short-term setting, indicating that different environments may be necessary for optimizing sperm quality based on their source.
View Article and Find Full Text PDF

Single sperm cryopreservation is a new method to preserve small numbers of spermatozoa in small droplets. So far, several devices have been introduced for this technique, but more studies are needed for its optimization. The aim of this study was optimizing the previous device for low number of spermatozoa and low volume semen, which led to design of Cryotop Vial device.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessione3als6605mpvkk0gl5fqk9t205os75m5): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once