Association of DAZ and DAZLA Gene Loci with Spermatogenesis in Patients with Idiopathic Azoospermia and Severe Oligospermia.

Aim: To explore the relationship between DAZ (Deleted in Azoospermia, DAZ) and DAZLA (Deleted in Azoospermia-like autosomal) gene deletion and male idiopathic azoospermia and oligozoospermia.

Methods: 80 patients with azoospermia (azoospermia group) and 80 patients with oligozoospermia (oligozoospermia group) who were treated at our hospital from April 2021 to April 2023, and male volunteers who underwent health examinations at our hospital during the same period were selected as the control group, The incidence of DAZ and DAZLA gene locus deletion in three groups of men was detected by polymerase chain reaction (PCR), and the differences of reproductive hormone levels and main semen parameters among the three groups were compared. The azoospermia were stratified according to whether DAZ and DAZLA gene locus deletion occurred.

Serum fructose concentrations are positively correlated with dyslipidaemia in women with polycystic ovary syndrome.

Research Question: Is there an association between fructose and dislipidaemia in polycystic ovary syndrome (PCOS)?

Design: Serum fructose levels were measured in 250 women with PCOS (113 with dislipidaemia, 137 with normolipidaemia) and 460 controls (70 with dislipidaemia, 390 with normolipidaemia). Logistic regression was used to model the relationship between serum fructose levels and dyslipidaemia. Receiver operating characteristic curve analysis was used to assess the ability of serum fructose levels to predict dislipidaemia in women with PCOS, and PCOS in women with dislipidaemia.

Spatiotemporal processing in photoplethysmography for skin microcirculatory perfusion imaging.

Technological advances in the real-time visualization of cutaneous microcirculation aim to realize benefits including high-resolution imaging, suppressed noise, and robust temporal coherence. Photoplethysmography (PPG), a noninvasive technique that measures single or multiple points of relative blood volume changes in blood vessels under the skin, shows potential as a signal candidate for visualizing blood vessels and tracking blood flow. However, challenges still remain, such as extracting/image reconstruction of the blood vessel/flow signal in a precise frequency window (<0.

The perinatal outcomes of frozen-thawed blastocyst transfer are better than fresh blastocyst transfer: a systematic review and meta-analysis.

Objectives: Transfer of cryopreserved-warmed blastocysts is common in the practice of in vitro fertilization. The purpose of the study is to examine the available evidence and determine whether cryopreservation of blastocysts and subsequent frozen blastocyst transfer (BT) result in better outcomes than fresh BT.

Material And Methods: Related studies comparing outcomes of in vitro fertilization (IVF) cycles between fresh and frozen BTs were retrieved from Medline, Cochrane Central Register of Clinical Trials, EMBASE, DARE, and CINAHL through March 2020.

POSTN Promotes the Proliferation of Spermatogonial Cells by Activating the Wnt/β-Catenin Signaling Pathway.

The self-renewal of spermatogonial cells (SCs) provides the foundation for life-long spermatogenesis. To date, only a few growth factors have been used for the culture of SCs in vitro, and how to enhance proliferation capacity of SCs in vitro needs further research. This study aimed to explore the effects of periostin (POSTN) on the proliferation of human SCs.

Meiotic chromosome behavior in a human male t(8;15) carrier.

Reciprocal translocation is one of the most common structural chromosomal rearrangements in human beings; it is widely recognized to be associated with male infertility. This association is mainly based on the abnormal chromosome behavior of the translocated chromosomes and sex chromosomes during meiosis prophase I in reciprocal translocation carriers. However, the underlying mechanisms are not completely known.