The latest medical research on Reproductive Endocrinology & Infertility

Bacterial vaginosis (BV) disproportionally impacts Black and Hispanic women, placing them at risk for HIV, sexually transmitted infections and preterm birth. It is unknown whether there are differences by genetic ancestry in BV risk or whether polymorphisms associated with BV risk differ by ancestry.

Women's Interagency HIV Study (WIHS) participants with longitudinal Nugent scores were dichotomized as having (n = 319, Nugent 7-10) or not having BV (n = 367, Nugent 0-3). Genetic ancestry was defined by clustering of principal components from ancestry informative markers and further stratified by BV status. 627 single nucleotide polymorphisms (SNPs) across 41 genes important in mucosal defense were identified in the WIHS GWAS. A logistic regression analysis was adjusted for nongenetic predictors of BV and self-reported race/ethnicity to assess associations between genetic ancestry and genotype.

Self-reported race and genetic ancestry were associated with BV risk after adjustment for behavioral factors. Polymorphisms in mucosal defense genes including syndecans, cytokines and toll-like receptors (TLRs) were associated with BV in all ancestral groups.

The common association of syndecan, cytokine and TLR genes and the importance of immune function and inflammatory pathways in BV, suggests these should be targeted for further research on BV pathogenesis and therapeutics.

The amniotic membrane (AM) has shown immense potential in repairing wounds due to its great regenerative qualities. Although the role of AM as a biological scaffold in repairing wounds has been studied well, the tissue regenerative potential of AM-derived mesenchymal stem cells (MSCs) and conditioned media (CM) derived from it remains to be discovered as of now. Here, we examined the wound healing abilities of fresh and frozen thawed rabbit AM (rAM) along with the MSCs and their lyophilised CM in rabbits challenged with skin wounds.

To elucidate the role of rAM-MSCs and its CM in repairing the wound, we isolated it from the freshly derived placenta and characterised their differentiation potential by performing an in vitro tri-lineage differentiation assay besides other standard confirmations. We compared the wound repair capacities of rAM-MSCs and lyophilised CM with the fresh and cryopreserved AM at different timelines by applying them to excision wounds created in rabbits.

By monitoring wound contractions and tissue histology of wounded skin at different time points after the application, we observed that rAM-MSCs and rAM-MSC-derived CM significantly promoted wound closure compared to the control group. We also observed that the wound closure capacity of rAM-MSCs and rAM-MSC-derived CM is as efficient as fresh and cryopreserved rAM.

Our findings suggest that rAM-MSCs and rAM-MSC derived CM can be effectively used to treat skin wounds in animals and correctly delivered to the damaged tissue using AM as a bioscaffold, either fresh or frozen.

Disclosure of donor conception has been advocated in several jurisdictions in recent years, especially in those that practice identity-release donation. However, research on disclosure decisions has not been consolidated systematically in the last 10 years to review if parents are telling and what factors may be impacting their decisions.

Are parents disclosing to their donor-conceived children, and what factors have influenced their disclosure decisions across different contexts and family forms in the last 10 years?

A bibliographic search of English-language, peer-reviewed journal articles published between 2012 and 2022 from seven databases was undertaken. References cited in included articles were manually scrutinized to identify additional references and references that cited the included articles were also manually searched. Inclusion criteria were articles focused on parents (including heterosexual, single mothers by choice, same-sex couples, and transsexual) of donor-conceived persons in both jurisdictions with or without identity-release provisions. Studies focused solely on surrogacy, donors, donor-conceived persons, or medical/fertility staff were excluded as were studies where it was not possible to extract donor-recipient parents' data separately. Both quantitative and qualitative studies were included. Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed and Joanna Briggs Institute Critical Appraisal Tools for Systematic Reviews were used to assess article quality and bias.

Thirty-seven articles met the inclusion criteria representing 34 studies and 4248 parents (including heterosexual, single, same-sex, and transsexual parents although the majority were heterosexual) from countries with anonymous donation and those with identity-release provisions or who had subsequently enacted these provisions (Australia, Belgium, Finland, France, Hong Kong, Middle East, Spain, Sweden, the UK, and the USA) A general trend towards disclosure was noted across these groups of parents with most disclosing to their donor-conceived children before the age of 10 years. Further, the majority of those who had not yet told, reported planning to disclose, although delayed decisions were also associated with lower disclosure overall. Same-sex and single parents were more likely to disclose than heterosexual parents. There was recognition of disclosure as a process involving ongoing conversations and that decisions were impacted by multiple interacting intrapersonal, interpersonal, and external contextual and social factors. Methodological limitations, such as the different population groups and contexts from which participants were drawn (including that those parents who choose not to disclose may be less likely to participate in research), are acknowledged in integrating findings.

This review has reinforced the need for a theoretical model to explain parents' disclosure decisions and research exploring the role of legislative provisions, culture, and donor/family type in decision-making. Greater ongoing access to psychological support around disclosure may be important to promote parent and family well-being.