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Assisted reproduction techniques (ARTs) have given rise to novel, non-traditional family models. Still, among the various applications and approaches of ‘medically assisted procreation’ (MAP), the most divisive one undoubtedly is ‘gestational surrogacy’ (GS), also in light of the rising number of couples who have chosen it over the past twenty years. Another major implication of ARTs is the creation of intentional (or intended) parenthood in addition to genetic one: the genetic parent’s partner is thus defined as the intentional (or second) parent, who by free choice, shares the family project with the genetic parent, even without any biological tie with the child. Hence, the intended parent takes on the same rights and responsibilities towards the child as the biological one. Several countries, including Italy, have enacted norms to discourage cross-border surrogacy, deeming it harmful to the dignity of women and children. Recently, however, the Italian government has decided intensify the fight against this practice: the Chamber of Deputies (Italy’s lower chamber of parliament) has passed a law which punishes couples that resort to surrogacy even if the agreement and the birth take place abroad. Therefore, surrogacy would become a so-called universal crime. In light of the fact that criminalization is a serious and highly consequential step, which may have life-changing consequences for the intended parents, the aim of this paper is to assess whether this may be an effective instrument for regulating the interests at stake and, therefore, whether it would be desirable for other countries to follow such a model. Ultimately, it is worth remarking that for those who seek to achieve parenthood, such a desire is among the most profound aspects of a person’s existential realization. When due to a delicate balance of ethics standards and potentially conflicting rights, lawmakers intervene, an authoritarian approach is unlikely to be beneficial. Offering real alternatives to surrogacy in an organic and pragmatic fashion (i.e. expediting adoption procedures, favoring motherhood at a younger age, when infertility issues are less likely to have set in) may be the best way to disincentivize fertility traveling and make sure the rights, hopes and aspirations of all the parties involved are upheld properly. [ABSTRACT FROM AUTHOR]

This paper examines how legal parenthood should be allocated in surrogacy under English law. I argue that we need to shift the focus of the discussion to the surrogate's negative intention to not be a parent as the key to move away from the current gestational model of motherhood. This has three main benefits that are explored in this paper. First, it respects surrogates' voices and construes them in terms of their autonomy and agency, rather than solely in terms of their vulnerability. Second, it provides a conceptually robust basis for recognising legal parenthood of the intended parents at birth, since the surrogate's negative intention is construed as the trigger for the application of specialised rules on parenthood. Third, it serves as a guiding principle in developing appropriate and comprehensive protections for the surrogate, including recognising the intended parents as the legal parents at birth, the parameters of the surrogate's right to withdraw consent, and further safeguarding requirements and checks before entering into a surrogacy agreement. Overall, focusing on the surrogate's negative intention allows us to view surrogacy in a nuanced way, away from false dichotomies, and contributes to a more compelling case in favour of actively facilitating surrogacy. [ABSTRACT FROM AUTHOR]

Assisted reproduction often involves biological contributions by third parties such as egg/sperm donors, mitochondrial DNA donors, and surrogate mothers. However, these arrangements are also characterised by a biological relationship between the child and at least one intending parent. For example, one or both intending parents might use their own eggs/sperm in surrogacy, or an intending mother might conceive using donor sperm or gestate a donor embryo. What happens when this relationship is absent, as in the case of 'double‐donor surrogacy' arrangements (DDS)? Here, a child is conceived using both donor eggs and sperm, carried by a surrogate, and raised by the commissioning parents. In this paper, I critically examine proposals to allow DDS in the United Kingdom, and the intentionalist justification for treating this practice distinctly (morally and legally speaking) from private adoption. I argue that the intentionalist approach cannot plausibly justify such a distinction and that other approaches to moral parenthood are also unlikely to succeed. [ABSTRACT FROM AUTHOR]

The global rise in the age of childbirth, influenced by changing sociodemographic patterns, has had a notable impact on fertility rates. Simultaneously, assisted reproductive techniques (ARTs) have become increasingly prevalent due to advancements in reproductive medicine. The paper explores the intersection between the surge in ARTs and the rising number of iatrogenic autoimmune progesterone dermatitis (APD). Autoimmune progesterone dermatitis, commonly known as progesterone hypersensitivity, manifests itself as a mucocutaneous hypersensitivity syndrome. It is characterized by a wide range of dermatological symptoms, with urticaria and maculopapular rashes being the most prominent signs. Concurrently, systemic symptoms, such as fever, angioedema, and, in severe instances, anaphylaxis, may ensue. This dermatologic condition poses a significant challenge to women of childbearing age. This intricate syndrome frequently manifests itself in conjunction with menstruation or pregnancy as a reaction to physiological fluctuations in endogenous progesterone. However, given that exposure to exogenous progesterone is an integral component of various modern therapies, secondary APD has also been described. Our findings unveil a heightened likelihood of developing secondary progesterone hypersensitivity in ART patients that is attributed to the administration of exogenous progesterone through intramuscular, intravaginal, and oral routes. The study also explores available therapeutic interventions for facilitating viable pregnancies in individuals grappling with autoimmune progesterone dermatitis within the context of ARTs. This comprehensive analysis contributes valuable insights into the intricate relationship between reproductive technologies, dermatological challenges, and successful pregnancy outcomes. [ABSTRACT FROM AUTHOR]

Spermbots are robotic sperms formed out of sperm cells conjugated to artificial microstructures, having potential applications ranging from biomedical processes, drug delivery systems, in situ real time imagery and assisted reproduction. The robotic sperm can act as an exploratory microdevice in biological networks. Incorporation of a biological entity like sperm into microstructures under the environment of magnetic or electric fields helps in shape templating and carrying chemotherapeutic agents to target sites. Besides its role in drug delivery systems, spermbots can potentially contribute in combating infertility, especially in oligo-zoospermia and necro-zoospermia in males. Numerous checkpoints may impede sperm cells to reach the oocyte in vivo. Spermbots bypass these sites and carry sperm to oocyte. Targeted delivery always requires interventions of natural functional aspects of living systems. Sperm flagellum, being a biological motor in nature, can be harnessed as a driving force in spermbots to ensure delivery of fertile sperm cells with impaired motile machinery to the target. Moreover, the technology has a potential to unravel sperm migration patterns and understanding the processes in vivo. After a review of documented literature on possible use of spermbot technology in assisted reproduction, we hereby discuss the application of this new and innovative technology in humans and animals. The paper also highlights certain shortfalls in the widespread application of this cargo delivery technology in assisted reproduction. [ABSTRACT FROM AUTHOR]

Assisted reproductive technologies have expanded vastly and are frequently addressed using the language of revolution. The last two decades witnessed important transformations in Spanish repromarkets, some of which are linked to one freezing technique: vitrification. This cryotechnique tends to be presented by professionals as revolutionary as well, even if in a humbler way: a technique with the capacity to revolutionize reproductive labs. Celebrated for its ability to freeze oocytes, the introduction and assimilation of vitrification have implied many transformations in Spanish clinics and the broader reproductive industry in Spain. This paper describes the role of vitrification from the point of view of the labs, drawing on interviews with professionals and observations of laboratory work, and focusing on the changes, which include but are not restricted to freezing oocytes. I argue that vitrification has increased the role of cryopreservation in reproductive labs overall in Spain, expanding the use of strategic, short-term freezing of embryos. This is discussed as part of a "cryomedicalized" turn, using Charlotte Kroløkke and Anna Sofie Bach's term, which enlarges the scope of medicalization through optimization and prevention, in the context of late reproduction and a strong reproductive market. [ABSTRACT FROM AUTHOR]

Background: In 2020, SARS-CoV-2 and the COVID-19 pandemic had a huge impact on the access to and provision of ART treatments. Gradually, knowledge of the virus and its transmission has become available, allowing ART activities to resume. Still, questions on the impact of the virus on human gametes and fertility remain.Objective and Rationale: This article summarizes published data, aiming to clarify the impact of SARS-CoV-2 and the COVID-19 disease on human fertility and assisted reproduction, as well as the impact of vaccination, and from this, provide answers to questions that are relevant for people contemplating pregnancy and for health care professionals.Search Methods: PUBMED/MEDLINE and the WHO COVID-19 database were searched from inception to 5 October 2022 with search terms focusing on 'SARS-CoV-2' and gametes, embryos, reproductive function, fertility and ART. Non-English studies and papers published prior to 2020 were excluded, as well as reviews and non-peer reviewed publications. Full papers were assessed for relevance and quality, where feasible.Outcomes: From the 148 papers included, the following observations were made. The SARS-CoV-2-binding proteins, angiotensin-converting enzyme 2 (ACE2) and type II transmembrane serine protease (TMPRSS2), are expressed in the testis, but co-expression remains to be proven. There is some evidence of SARS-CoV-2 RNA in the ejaculate of COVID-19 patients with severe disease, but not in those with mild/moderate disease. SARS-CoV-2 infection can impair spermatogenesis, but this seems to resolve after one spermatogenic cycle. Testosterone levels seem to be lower during and after COVID-19, but long-term data are lacking; disease severity may be associated with testosterone levels. COVID-19 cannot be considered a sexually transmitted disease. There is no co-expression of ACE2 and TMPRSS2 in the myometrium, uterus, ovaries or fallopian tubes. Oocytes seem to have the receptors and protease machinery to be susceptible to SARS-CoV-2 infection; however, viral RNA in oocytes has not been detected so far. Women contemplating pregnancy following COVID-19 may benefit from screening for thyroid dysfunction. There is a possible (transient) impact of COVID-19 on menstrual patterns. Embryos, and particularly late blastocysts, seem to have the machinery to be susceptible to SARS-CoV-2 infection. Most studies have not reported a significant impact of COVID-19 on ovarian reserve, ovarian function or follicular fluid parameters. Previous asymptomatic or mild SARS-CoV-2 infection in females does not seem to negatively affect laboratory and clinical outcomes of ART. There are no data on the minimum required interval, if any, between COVID-19 recovery and ART. There is no evidence of a negative effect of SARS-CoV-2 vaccination on semen parameters or spermatogenesis, ovarian function, ovarian reserve or folliculogenesis. A transient effect on the menstrual cycle has been documented. Despite concerns, cross reactivity between anti-SARS-CoV-2 spike protein antibodies and Syncytin-1, an essential protein in human implantation, is absent. There is no influence of mRNA SARS-CoV-2 vaccine on patients' performance during their immediate subsequent ART cycle. Pregnancy rates post-vaccination are similar to those in unvaccinated patients.Wider Implications: This review highlights existing knowledge on the impact of SARS-CoV-2 infection or COVID-19 on fertility and assisted reproduction, but also identifies gaps and offers suggestions for future research. The knowledge presented should help to provide evidence-based advice for practitioners and couples contemplating pregnancy alike, facilitating informed decision-making in an environment of significant emotional turmoil. [ABSTRACT FROM AUTHOR]

Purpose: The study aimed to investigate the potential influence of COVID-19 infection on embryo implantation and early development in women undergoing frozen embryo transfer (FET), with a specific focus on infections occurring at different periods around FET. Methods: A retrospective analysis was performed on women who had undergone FET during a period marked by a significant surge in COVID-19 infection in Shanghai. All enrolled women experienced their first documented COVID-19 infection around the time of FET, ensuring that infections did not occur prior to oocyte retrieval. Participants were categorized into six groups based on the timing of infection: uninfected, ≥ 60 days, < 60 days before FET, 0–14 days, 15–28 days, and 29–70 days after FET. Clinical outcomes were compared across these groups. Results: The infection rate among the total of 709 cases was 78.28%. Infected individuals exhibited either asymptomatic or mild symptoms. The ongoing pregnancy rates for the first four groups were 40.7%, 44.4%, 40.5%, and 34.2% (P = 0.709) respectively, biochemical pregnancy rates (59.1% vs. 61.1% vs. 67.6% vs. 55.7%, P = 0.471) and clinical pregnancy rates (49.6% vs. 55.6% vs. 55.4% vs. 48.1%, P = 0.749), all showed no significant differences. Early spontaneous abortion rates across all six groups were 18.3%, 20.0%, 25.0%, 28.9%, 5.4%, and 19.0% respectively, with no significant differences (P = 0.113). Multivariable logistic analysis revealed no significant correlation between the infection and ongoing pregnancy. Conclusion: Asymptomatic or mild COVID-19 infections occurring around FET do not appear to have a significant adverse impact on early pregnancy outcomes. [ABSTRACT FROM AUTHOR]

Introduction: Studies that use standardized ultrasonographic criteria to diagnose adenomyosis in subfertile women are needed. These would improve the understanding of the disease burden and enable further studies on its impact on fertility and assisted reproductive treatment (ART) outcome. The aim of this study was to determine the prevalence of different features of adenomyosis in women scheduled for their first ART, diagnosed at two (2D) and three‐dimensional (3D) transvaginal ultrasonography (TVUS) using the revised Morphological Uterus Sonographic Assessment (MUSA) group definitions. Material and methods: This was a prospective, observational cross‐sectional study of subfertile women aged 25 to ≤39 years, that were referred to a university hospital for their first ART between December 2018 and May 2021. Of 1224 eligible women, 1160 women fulfilled the inclusion criteria and consented to participate in the study. All women underwent a systematic 2D and 3D TVUS examination. The primary outcome was the presence of direct and indirect features of adenomyosis, as proposed by the MUSA group. Secondary outcomes were to describe the ultrasonographic characteristics of the different features, as well as any difference in the diagnostics at 2D or 3D TVUS and any association with clinical characteristics such as endometriosis. Results: At least one direct or indirect feature of adenomyosis was observed in 272 (23.4%, 95% confidence interval [CI] 21.0–25.9) women. Direct features that are pathognomonic for the disease were observed in 111 (9.6%, 95% CI, 7.9–11.3) women. Direct features were visible only at 3D TVUS in 56 (4.8%, 95% CI 3.6–6.1) women, that is, 56/111 (50.5%) of women with at least one direct adenomyosis feature. Direct features were more common in women with endometriosis (OR 2.8, 95% CI 1.8–4.3). Conclusions: We found than one in 10 women scheduled for ART had direct features of adenomyosis at ultrasound examination. The present study suggests that the use of 3D TVUS is an important complement to 2D in the diagnostics of adenomyosis. Our results may further improve the counseling of women scheduled for ART and enables future studies on the impact of different features of adenomyosis on subfertility, ART results and obstetric outcomes. [ABSTRACT FROM AUTHOR]

Over the past two decades, recognition of same-sex relationships and non-normative families has increased alongside greater access to reproductive technologies. Despite this progress, surrogacy, a potential path to parenthood for gay couples, remains banned in many countries. Research indicates that gay couples, facing legal restrictions, often seek reproductive services abroad, navigating complex legal, political and sociocultural contexts in both their home and destination countries. However, existing research lacks cross-country comparisons that explore how different contexts shape gay couples' reproductive practices. This study enhances our theoretical understanding of the intricate interplay between social structure and social interactions. It explores how normative family conceptions, ingrained in legal frameworks, societal norms and cultural values at the macro level, profoundly influence the (normalising) practices of couples at the micro level. Empirically, this study compares Germany and Israel, where gay couples face starkly different challenges. Germany universally prohibits surrogacy, while Israel permits it, although not for gay men during my interviews. Drawing on interviews with couples from both countries who engaged surrogates abroad, this study analyses their struggles for legal recognition and social visibility as 'gay father families'. In both countries, couples navigate legal, political and sociocultural contexts differently, encapsulated in a process termed 'becoming a gay father family', involving concealing surrogacy and appropriating heteronormative family narratives. The data indicate that the couples' social interactions reflect and reinforce a discernible normative shift from heteronormativity to repronormativity in the context of assisted reproduction. [ABSTRACT FROM AUTHOR]

Magnetic activated cell sorting (MACS) is a well-known sperm selection technique, which is able to remove apoptotic spermatozoa from semen samples using the classic annexinV based method. Leukocytes and erythrocytes in semen samples or in testicular tissue processed for in vitro fertilization (IVF) could exert detrimental effects on sperm. In the current study, we rethought the aforementioned technique and used magnetic microbeads conjugated with anti-CD45/CD235a antibodies to eliminate contaminating leukocytes and erythrocytes from leukocytospermic semen samples and testicular tissue samples gained via testicular sperm extraction (TESE). With this technique, a 15.7- and a 30.8-fold reduction could be achieved in the ratio of leukocytes in semen and in the number of erythrocytes in TESE samples, respectively. Our results show that MACS is a method worth to reconsider, with more potential alternative applications. Investigations to find molecules labeling high-quality sperm population and the development of positive selection procedures based on these might be a direction of future research. [ABSTRACT FROM AUTHOR]

Copyright of Culture, Language & Representation / Cultura, Lenguaje y Representación is the property of Universitat Jaume I and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: Artificial Intelligence entails the application of computer algorithms to the huge and heterogeneous amount of morphodynamic data produced by Time-Lapse Technology. In this context, Machine Learning (ML) methods were developed in order to assist embryologists with automatized and objective predictive models able to standardize human embryo assessment. In this study, we aimed at developing a novel ML-based strategy to identify relevant patterns associated with the prediction of blastocyst development stage on day 5. Methods: We retrospectively analysed the morphokinetics of 575 embryos obtained from 80 women who underwent IVF at our Unit. Embryo morphokinetics was registered using the Geri plus® time-lapse system. Overall, 30 clinical, morphological and morphokinetic variables related to women and embryos were recorded and combined. Some embryos reached the expanded blastocyst stage on day 5 (BL Group, n = 210), some others did not (nBL Group, n = 365). Results: The novel EmbryoMLSelection framework was developed following four-steps: Feature Selection, Rules Extraction, Rules Selection and Rules Evaluation. Six rules composed by a combination of 8 variables were finally selected, and provided a predictive power described by an AUC of 0.84 and an accuracy of 81%. Conclusions: We provided herein a new feature-signature able to identify with an high performance embryos with the best developmental competence to reach the expanded blastocyst stage on day 5. Clear and clinically relevant cut-offs were identified for each considered variable, providing an objective tool for early embryo developmental assessment. [ABSTRACT FROM AUTHOR]

Dempsey, Nordqvist and Kelly's recent publication in BioSocieties highlights the complexity of disclosure in donor conception, which is legally, ethically, and morally challenging. However, contemporary society means that donor-conceived people's awareness of their conception history can no longer be controlled by their parents. Late, accidental, and non-parent disclosure is becoming more prevalent and can be distressing. Research has consistently found that openness in donor conception families from an early age is optimal, and that disclosure positively impacts rather than threatens family relationships. Despite this, disclosure can be difficult for parents, particularly if they perceive an unsupportive social context. Both donor conception and adoption literature has found more positive outcomes among disclosing families compared to non-disclosing families and interestingly, parents who have chosen to disclose have not reported regret. This response briefly discussed these important considerations and also notes some instances of inaccurate reporting and misleading information in their article. [ABSTRACT FROM AUTHOR]

As postponement of first births continues in the United States, women and couples will likely continue to turn to assisted reproductive technologies (ART) to overcome biological barriers to childbearing. This paper uses stochastic projections to estimate the potential impacts of ART on the US total fertility rate (TFR) overall and across sociodemographic groups using publicly available data. Assuming the trends in ART continue and the TFR remains at the mean estimate, the projection shows the ART TFR will rise from 0.023 accounting for 1.29% of the mean projected TFR in 2020 to 0.048 or 2.64% of the TFR by 2040. However, for the TFR of women over 30, this percentage is estimated at 2.68% in 2020 and 5.60% by 2040. Group-level projections quantify stratification by parity, race, and education assuming trends across these groups continue. Overall, the results show that if current trends continue, growth in demand for ART will likely increase, especially at older maternal ages, even as inequalities by race and social class remain. These projections provide a picture of ART births if inequality in access and outcomes is not addressed and highlight the need for attention to policies that address these disparities. [ABSTRACT FROM AUTHOR]

Copyright of Law / Teise is the property of Vilnius University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: Clinically assisted reproduction has created opportunities for pregnancy and parenthood for many who experience fertility challenges. For decades, sexual minority women (SMW; defined in this article as non-heterosexual cisgender females) in same-sex couples have used assisted reproduction to help them form families of their own. Yet, little research has described SMW's couple-level, shared experiences in the context of clinically intensive approaches to family expansion. Methods: This paper examines couples' shared experiences with assisted reproduction through qualitative analysis of 30 in-depth interviews conducted between June and August 2019. We recruited 20 sexual minority women who comprised 10 same-sex couples to participate in in-depth interviews and a brief survey. We applied thematic analysis to interviews (20 individual interviews, 10 dyadic interviews) to better understand couples' shared experiences with assisted reproduction. Using four sorting groups based on relative experience with assisted reproduction (i.e., first timers; staying-the-course; pivoters; finally pregnant), we identified three themes that highlight dimensions of couple-level, shared experiences. Results: Three broad themes were identified across the sample: (1) normative assumptions, (2) physical asymmetries in efforts to conceive, and (3) emotional dimensions of clinically assisted reproduction within couples. Conclusions: Expanded understanding of SMW couples' shared experiences suggests the need for policy modifications and tailored interventions to assist SMW couples navigating assisted reproduction. Policy Implications: Multilevel approaches, for example, regulatory policies and health systems operational updates, may provide meaningful shifts in care for SMW couples. [ABSTRACT FROM AUTHOR]

Uterine transplantation (UTx) is a programme of treatment aimed at providing a unique solution to absolute uterine factor infertility, enabling patients to have children as a result of their own pregnancies. As a transplant procedure performed for fertility purposes it may be thought obvious that the welfare of any children created should be assessed prior to treatment provision. However, major concerns about the breadth and scope of such requirements, and the potential threat they pose to patients' reproductive autonomy, have been raised. In this paper, I analyse novel questions regarding the role of the pre-conception welfare principle in UTx. After outlining traditional critiques of the principle, I focus on the unique issues raised by its application in the two areas of medicine occupied by UTx. As a treatment for a particular form of infertility, I explore whether law and policy regulating traditional assisted reproductive technologies applies equally to the case of UTx, and whether a distinction (in welfare terms) does and should exist between fertility treatment involving gametes and embryos and gynaecological surgery for fertility purposes. As a quality-of-life-enhancing transplant, I consider and reject proposals in favour of using pre-conception welfare considerations to inform patient listing and the allocation of deceased donor uteri on the grounds that such assessments may both compromise patient autonomy and lead to unjust discrimination against particular patients or groups of patients. [ABSTRACT FROM AUTHOR]

The impact of culture and religion on sexual and reproductive health and behavior has been a developing area of study in contemporary time. Therefore, it is crucial for people using reproductive procedures to understand the religious and theological perspectives on issues relating to reproductive health. This paper compares different perspectives of three Abrahamic faiths, i.e., Judaism, Christianity, and Islam on ARTs. Procreation, family formation, and childbirth within the context of marriage have all been advocated by these three major religions of the world. Judaism permits the use of all assisted reproductive technologies when the oocyte and sperm come from the husband and wife, respectively. The different denominations of Christianity have diverse views on reproductive practices. Although the Vatican does not approve of assisted reproduction, Protestant, Anglican, and other religious groups are free to use it. ARTs are acceptable in Sunni Islam, although they can only be carried out if the couples are married. Shia Islam, however, permits third-party donations to married couples under specific restrictions. This comparison reveals that while the three major world religions utilize assisted reproduction in distinct ways, there are also many comparable aspects of each religion. [ABSTRACT FROM AUTHOR]

In recent years, there has been a growing interest in identifying subcellular causes of male infertility, and sperm DNA fragmentation (SDF) research has been at the forefront of this focus. DNA damage can occur during spermatogenesis due to faulty chromatin compaction or excessive abortive apoptosis. It can also happen as sperm transit through the genital tract, often induced by oxidative stress. There are several methods for SDF testing, with the sperm chromatin structure assay, terminal deoxynucleotidyl transferase d-UTI nick end labeling (TUNEL) assay, comet assay, and sperm chromatin dispersion test being the most commonly used. Numerous studies strongly support the negative impact of SDF on male fertility potential. DNA damage has been linked to various morphological and functional sperm abnormalities, ultimately affecting natural conception and assisted reproductive technology outcomes. This evidence-based review aims to explore how SDF influences male reproduction and provide insights into available therapeutic options to minimize its detrimental impact. [ABSTRACT FROM AUTHOR]

According to some statistics, absolute asthenozoospermia affects every 1 in 5000 men. Although this incidence rate does not appear to be too high, it is extremely important to address the phenomenon because it can drastically reduce the chances of pregnancy, even with assisted reproduction. The biggest problem with absolute asthenozoospermia is that it is difficult to distinguish between live and dead sperm cells, and fertilization with non-viable spermatozoa may contribute to the failure of an assisted reproduction cycle. Nowadays, DNA fragmentation (DF) is a crucial parameter of semen analysis, and in this paper, we provide evidence of the correlation between DF and vitality. For this purpose, the main semen parameters were investigated by a CASA system (concentration, motility, progressive motility, vitality and DF). In the necrozoospermic group (vitality < 58%), all the measured parameters showed significant differences compared to normal vitality. Concentration (30.1 M mL−1 vs. 13.6 M mL−1), motility (31.9% vs. 18.3%), and progressive motility (24.3% vs. 12.7%) were significantly decreased, while DF was significantly increased (17.4% vs. 23.7%). Based on the connection between vitality decrement and DF increment, DF lowering methods, such as magnetic-activated cell sorting, have been hypothesized as novel methods for the elimination of dead spermatozoa. [ABSTRACT FROM AUTHOR]

In this paper I argue that current law and policy governing germline genetic modification are overly broad and in fact prohibit medical interventions normally considered unobjectionable. The root of the problem lies in the fact law and policy tend to espouse a near categorical ban on medical interventions that alter germline DNA. However, if we pay close attention to the biological mechanisms at play we see that many standard medical interventions result in alterations to DNA that can be transmitted to future generations. The correct focus of policy and regulation thus ought to be determining which kinds of transmissible genetic modifications ought to be permitted, and not whether they should be permitted at all. Given that the scientific classification of biological structures involved in the inheritance of traits is unlikely to be in itself ethically significant, ethicists ought to develop a definition of 'gene' fit for ethical purposes. [ABSTRACT FROM AUTHOR]

Human uterus transplantation (UTx)—the most radical and experimental of all current forms of assisted reproduction—gives rise to a range of complex ethical questions, including those related to individual safety, risk, and informed consent. I have argued elsewhere that the wider social impacts and implications of UTx provision must form part of a comprehensive ethical analysis. My socio‐moral critique of UTx provision has been responded to with a number of defences of possible public funding of UTx. In this paper I examine a select number of those defences. These include: that UTx provision would address harms and needs that already exist and as such have priority; that UTx provision is fully compatible with the needed reform of the procreative context in which it would be offered; that UTx provision would not necessarily involve legitimation or endorsement of what are widely agreed to be problematic pronatalist or geneticist norms; and that UTx provision is required as a matter of justice and consistency with other practices. Importantly, defenders are not proposing a ceteris paribus justification of UTx provision; nor do my responses to their arguments represent a comprehensive opposition to UTx. Rather, my more limited purpose here is to show that whatever other defences may be given of publicly funded UTx provision, those considered here do not ultimately succeed and therefore do not allay the concerns underpinning the original socio‐moral critique. [ABSTRACT FROM AUTHOR]

Over the last two decades, social scientists across disciplines have been researching how value is extracted and governed in the reproductive bioeconomy, which broadly refers to the various ways reproductive tissues, bodies, services, customers, workers, and data are inserted into capitalist modes of accumulation. While many of these studies are empirically grounded in single country–based analyses, this paper proposes an integrative political economy framework, structured around the concept of "global fertility chains." The latter articulates the reproductive bioeconomy as a nexus of intraconnected practices, operations, and transactions between enterprises, states, and households across the globe, through which reproductive services and commodities are produced, distributed, and consumed. Employing a diffractive reading of the literature on commodity chains and care chains, this unified approach scrutinizes the coproduction of value, biology, and technoscience and their governance mechanisms in the accumulation of capital by taking into account (1) the unevenly developed geographies of global fertility chains, (2) their reliance on women's waged and unwaged reproductive labor, and (3) the networked role of multiple actors at multiple scales without losing sight of the (4) constitutive role of (supra)national states in creating demand, organizing supply, and accommodating the distribution of surplus value. We empirically ground this integrative political economy approach of the reproductive bioeconomy through collaborative, multisited fieldwork on transnational reproduction networks in Israel/Palestine, Romania, Georgia, and Spain. [ABSTRACT FROM AUTHOR]

Men with cystic fibrosis are nearly always infertile due to congenital bilateral absence of the vas deferens, but can undergo assisted reproduction. Ill health may influence reproductive choices. This paper reports data on fertility and family formation in CF including the use of assisted reproduction in a total cohort of 205 men (mean age 30.9, range 16.6–64.3 years) studied over a 10-year period. Overall 102 (49.5%) were single, 52 (25.7%) were married, 48 (23.3%) were in long-term heterosexual relationships, and 3 (1.5%) were in same-sex relationships. One (0.5%) was fertile naturally. In total, 30 children were born to 23 (11%) men by assisted reproduction: 4 used donor sperm and 19 had sperm retrieval and intracytoplasmic sperm injection (ICSI). Two men each adopted two children; 15 (7.3%) men were acting as step-fathers to 20 children from their partners' previous relationships. Overall 41 (20%) men had fatherhood roles. ICSI was unsuccessful in 4 men. A further 16 men were referred for fertility treatment but did not proceed. Of the 19 men having children by ICSI, 3 died leaving 4 children. Men with CF face complex decisions when considering their relationships, fertility and fatherhood. [ABSTRACT FROM AUTHOR]

This paper reports on findings from a qualitative study that examined how Canada's socio-political context influenced gestational surrogacy for same-sex male couples. Semi-structured interviews were conducted with gay fathers and gestational surrogates to investigate supports and barriers of pursuing surrogacy. Questions explored publicly available information, policies and practices of fertility clinics and hospitals, post-birth resources and cultural attitudes regarding same-sex parenthood. Findings suggest that in Canada, a global leader in LGBT rights and inclusive same-sex parenting legislation, participants encountered inadequate same-sex inclusive resources and insufficient provider competencies. The aim of this study was to inform individual and institutional recommendations to counteract biases in fertility care and post-birth services. Following interview analysis, five key strategies were identified: (1) more accessible information on paths to same-sex parenthood; (2) more inclusive fertility clinic and hospital practices; (3) recognition of same-sex fatherhood in formal documentation; (4) post-birth resources such as formula feeding, play groups and first aid courses intended for same-sex parent families; and (5) shifts in cultural attitudes of same-sex parenthood and, specifically, gay fatherhood. Approaches that subvert heteronormative discourses embedded in fertility and reproduction are required to legitimise and support same-sex parent families. [ABSTRACT FROM AUTHOR]

Background: The debate over the impact of vitamin D in assisted reproduction continues. The purpose of our study was to assess embryo quality and pregnancy outcomes among groups with different levels of vitamin D after the first in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) cycle in patients with normal ovarian reserve (NOR). Methods: Patients in this retrospective cohort study were divided into three groups: severe vitamin D deficiency group (25OH-D < 10 ng/ml), vitamin D deficiency group (10 ng/ml ≤ 25OH-D < 20 ng/ml), and non-vitamin D deficiency group (25OH-D ≥ 20 ng/ml). The primary outcome was clinical pregnancy, while the secondary outcomes were mature oocytes, oocyte fertilization, available cleavage embryos, available blastocysts, biochemical pregnancy, early abortion, and embryo implantation. A modified Poisson regression model and multiple linear regression analysis were conducted for the multivariate analysis. Results: 264 NOR patients undergoing the first IVF/ICSI cycles were included. For the primary outcome, there was no significant difference in clinical pregnancy between the severe vitamin D deficiency group and the other two groups (vitamin D deficiency group: adjusted RR = 1.026; 0.780 - 1.350; P = 0.854; non-vitamin D deficiency group: adjusted RR = 1.092; 0.743 - 1.605; P = 0.652). For all secondary outcomes, no significant differences were observed among the severe vitamin D deficiency, vitamin D deficiency, and non-vitamin D deficiency groups (P > 0.05). Exploratory subgroup analyses concerning the season of embryo transfer, phase of embryo transferred, and endometrial thickness, as well as the sensitivity analysis using logistic regression models for the primary outcome, revealed comparable clinical pregnancy rates among the groups (P > 0.05). Subgroup analysis concerning ovarian stimulation protocol indicated that in the subgroup of gonadotrophin-releasing hormone (GnRH) antagonist protocol, the clinical pregnancy rate of the non-vitamin D deficiency group was significantly higher than that of the other two groups (P < 0.05). Conclusion: Serum vitamin D level was not associated with embryo quality and pregnancy outcomes for patients with NOR. Further studies with greater sample sizes and a longer follow-up period are needed to elucidate the relationships between vitamin D levels and IVF outcomes. [ABSTRACT FROM AUTHOR]

Women suffering from absolute uterine factor infertility (AUFI) had no hope of childbearing until clinical feasibility of uterus transplantation (UTx) was documented in 2014 with the birth of a healthy baby. This landmark accomplishment followed extensive foundational work with a wide range of animal species including higher primates. In the present review, we provide a summary of the animal research and describe the results of cases and clinical trials on UTx. Surgical advances for graft removal from live donors and transplantation to recipients are improving, with a recent trend away from laparotomy to robotic approaches, although challenges persist regarding optimum immunosuppressive therapies and tests for graft rejection. Because UTx does not involve transplantation of the Fallopian tubes, IVF is required as part of the UTx process. We provide a unique focus on the intersection between these two processes, with consideration of when oocyte retrieval should be performed, whether, and for whom, preimplantation genetic testing for aneuploidy should be used, whether oocytes or embryos should be frozen and when the first embryo transfer should be performed post-UTx. We also address the utility of an international society UTx (ISUTx) registry for assessing overall UTx success rates, complications, and live births. The long-term health outcomes of all parties involved—the uterus donor (if live donor), the recipient, her partner and any children born from the transplanted graft—are also reviewed. Unlike traditional solid organ transplantation procedures, UTx is not lifesaving, but is life-giving, although as with traditional types of transplantation, costs, and ethical considerations are inevitable. We discuss the likelihood that costs will decrease as efficiency and efficacy improve, and that ethical complexities for and against acceptability of the procedure sharpen the distinctions between genetic, gestational, and social parenthood. As more programs wish to offer the procedure, we suggest a scheme for setting up a UTx program as well as future directions of this rapidly evolving field. In our 2010 review, we described the future of clinical UTx based on development of the procedure in animal models. This Grand Theme Review offers a closing loop to this previous review of more than a decade ago. The clinical feasibility of UTx has now been proved. Advancements include widening the criteria for acceptance of donors and recipients, improving surgery, shortening time to pregnancy, and improving post-UTx management. Together, these improvements catalyze the transition of UTx from experimental into mainstream clinical practice. The procedure will then represent a realistic and accessible alternative to gestational surrogacy for the treatment of AUFI and should become part of the armamentarium of reproductive specialists worldwide. [ABSTRACT FROM AUTHOR]

Mitochondrial replacement technology (MRT) is an emerging and complex bioethical issue. This treatment aims to eliminate maternal inherited mitochondrial DNA (mtDNA) disorders. For Muslims, its introduction affects every aspect of human life, especially the five essential interests of human beings—namely, religion, life, lineage, intellect, and property. Thus, this technology must be assessed using a comprehensive and holistic approach addressing these human essential interests. Consequently, this article analyses and assesses tri-parent baby technology from the perspective of Maqasidic bioethics—that is, Islamic bioethics based on the framework of Maqasid al-Shariah. Using this analysis, this article suggests that tri-parent baby technology should not be permitted for Muslims due to the existence of third-party cell gametes which lead to lineage mixing and due to the uncertain safety of the therapy itself and because the major aim of the technology is to fulfil the affected couples interest to conceive their own genetically healthy child, not to treat and cure mtDNA disorders sufferers. [ABSTRACT FROM AUTHOR]

Background: Medicalised Conception (MAC) assists many couples to achieve pregnancy worldwide. As the impact of MAC has been linked to increased pregnancy-specific anxiety and parenting difficulties, this review aimed to explore parental experiences of pregnancy and early parenting following MAC, identifying parents' psychological, social and health needs. Method: Five databases were searched systematically from inception to March 2023. Identified articles were screened for eligibility against the inclusion criteria and the results were analysed using thematic synthesis. The Critical Appraisal Skills checklist was employed to appraise methodological quality. Results: Twenty qualitative studies, drawing on a total of 19 participant samples, were included in this review, most with samples with history of subfertility. The findings were synthesised into three main themes (consisting of seven subthemes): 1) The vulnerable parent: fear, doubt, uncertainty, 2) the stark realisation of the parental dream, 3) psychosocial needs and support. Parents lacked a sense of safety during pregnancy and reported acting protectively both antenatally and postnatally. Furthermore, their identity transition was complex and non-linear, influenced by sociocultural context. Conclusions: Considerable unmet psychosocial needs were identified including the potential for anxiety in pregnancy, the possibility of feeling excluded and marginalised, and a reluctance to share distress and experiences with healthcare professionals. These findings suggest a need for consistent, holistic care, integrating psychological services. [ABSTRACT FROM AUTHOR]

It is estimated that one in seven couples in the UK experience infertility, though just over half of those affected by it seek professional help. Previous studies pointed to potential socioeconomic barriers in accessing assisted reproduction; however, less is known about geographic accessibility to fertility treatment and the way it is associated with measures of deprivation. In this study, we used publicly available data on fertility clinics, combined with official statistics for 315 local authorities in England, to create a standardized measure of geographic accessibility to fertility services. In addition, using a negative binomial regression model, we estimated the link between socioeconomic measures at the local authority level and availability of fertility services. We found that geographic accessibility to assisted reproduction is significantly higher in the most advantaged local authorities in terms of average household income and level of deprivation. This may lead to reduced opportunities for realizing fertility aspirations among those suffering from infertility in more deprived areas. Taking into account both socioeconomic and geographic barriers to accessing fertility treatment can contribute to a better understanding of help-seeking patterns for infertility, likelihood of achieving a live birth and inform policy to equalise opportunities in access to infertility treatment. [ABSTRACT FROM AUTHOR]

This review explores the impact of polyunsaturated fatty acid (PUFA) supplementation in women undergoing assisted reproductive technology (ART) on reproductive outcomes. A systematic search of English peer-reviewed journals was carried out using MEDLINE, EMBASE, and the Cochrane Library to identify articles published from January 1978 to 2021. The primary outcomes assessed included pregnancy and live birth rates. Secondary outcome measures included: (i) implantation rate; (ii) fertilisation rate; (iii) number of oocytes retrieved; (iv) number of metaphase II (MII) oocytes; (v) blastocyst conversion; and (vi) embryo quality. A total of 4 randomised control trials (RCTs) met the inclusion criteria. There is a lack of high-quality research to support widespread dietary supplementation with PUFAs in women undergoing ART. Prior to its clinical recommendation, there is a need for well-designed RCTs to facilitate an in-depth understanding of PUFA supplementation in women undergoing ART. [ABSTRACT FROM AUTHOR]

A growing body of literature examines the ethico-legal challenges resulting from novel forms of assisted gestation like uterus transplantation and artificial placentas (also known as 'artificial wombs'). However, there has not yet been consideration of reproductive rights organizations/advocates' understandings of novel forms of assisted gestation and their challenges. These perspectives provide critical insight into how novel procreative practices are understood and the problems and pressures that might arise from their use. This is the first legal article to engage with reproductive rights organizations/advocates and thus it provides important contextual grounding to existing scholarship about assisted gestation. Focus group discussion epitomized the need for legal reform in key areas surrounding reproduction. Themes were constructed that exemplify what participants highlighted as critical: the need to re-evaluate the fundamentals of legal parenthood, consideration of how novel technologies could further enable the policing of gestation, and the space and time needed for law-making. [ABSTRACT FROM AUTHOR]

The birth of the world's first genetically edited babies in 2018 provoked considerable ethical outrage. Nonetheless, many scientists and bioethicists now advocate the pursuit of clinical uses of human germline gene editing. Progress towards this goal will require research, including clinical trials where genetically edited embryos are implanted into a woman's uterus, gestated, and brought to term. This paper argues that such trials would likely conflict with the fundamental research ethical requirement of non‐exploitation. This is because they would expose people who are in a vulnerable situation to risks and burdens that are substantial and not obviously offset by compensating benefits. I consider how the potential for exploitation in such trials might be mitigated, arguing that a feasible and justifiable approach is not easily found. If this analysis is correct, there is a significant ethical obstacle on the path towards clinical use of human germline gene editing. [ABSTRACT FROM AUTHOR]

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Endocrine disorders negatively influence the ovarian function, and increasing incidence of endocrine diseases with age may have further negative effects on pregnancy rate. Prospective cohort study of 231 consecutively enrolled patients underwent IVF treatment. In patients with known endocrine disorders, the laboratory parameters were corrected before IVF treatment. One hundred sixty one patients (69.7%) had at least one known and treated endocrine disorder (study group), and 70 patients were endocrine negative (control group). Endocrine disorders diagnosed were thyroid disorders (32.5%), diminished ovarian reserve (23.8%), insulin resistance (22.5%), PCOS (15.2%), hyperprolactinaemia (13.4%), obesity (12.1%), hypogonadotropic hypogonadism (0.8%) and congenital adrenal hyperplasia (0.2%). Before the IVF treatment, systematic endocrine laboratory examinations were performed in all patients. Higher age, BMI and FSH were found in the study group, while AMH level was lower. There were no differences in LH, E2, prolactin, TSH, FT3, FT4, TT, DHEAS, androstendione, 17-OHP and SHBG level between the study and control groups. The study group had higher baseline glucose, baseline insulin, 120-min glucose and 120-min insulin level after oral glucose tolerance test. With no difference in the IVF cycles performed, pregnancy rate was lower in the study group (61.43% vs. 34.16%; p = 0.003), and this difference (p = 0.0151) remained in age-corrected rates, as well. The analyses were also performed in individual endocrinology groups. The prevalence of endocrine disorders is high in females participating in IVF programs, and they are often accompanying each other. Even after proper correction, the presence of the endocrine disorder negatively influences the pregnancy rate in IVF treatment. [ABSTRACT FROM AUTHOR]

Background: We developed a simplified IVF culture system (SCS) which has proven to be effective and safe in a selected IVF cohort. Methods: Preterm birth (PTB) and low birth weight (LBW) of 175 singletons born after using the SCS, 104 after fresh embryo transfer (ET), and 71 after frozen embryo transfer, were compared with all singletons born in Flanders between 2012 and 2020 conceived after natural conception, ovarian stimulation (OS), and assisted reproduction (IVF/ICSI). Findings: The proportion of preterm (<37 weeks) births was significantly higher in the case of IVF or ICSI, followed by hormonal treatment, compared to spontaneous pregnancies. There was no significant difference in PTB between SCS and any of the other groups. Concerning the average birth weight we found no significant difference between singletons born after natural conception and SCS. However, a significant difference in average birth weight was found between SCS singletons and singletons born after IVF, ICSI and hormonal treatment, with a significantly higher birth weight in the SCS group. This difference was also observed in the proportion of babies weighing less than 2500 g, with significantly more LBW babies in the IVF and ICSI group compared to the SCS newborns. Interpretation: Taking into account the small series, PTB and LBW rates in SCS singletons were found to be comparable with singletons born after natural conception. Compared to babies born after ovarian stimulation and IVF/ICSI, SCS singletons had a lower PTB and LBW rates, although the differences were not significant for PTB. Our results confirm previous reports on reassuring perinatal outcomes after using the SCS technology. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Analytic Divinity is the property of Analytic Divinity Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In the fields of sci-art, bioart and speculative design, contemporary artists are creating experiential visions of the future based on trends within science. Two artworks with futuristic figurations of human reproduction, Pinar Yoldas' Designer Babies and Ai Hasegawa's I Wanna Deliver a Dolphin/I Wanna Deliver a Shark, serve as the point of departure for revisiting the eternal nature-culture debate. Hasegawa's work explores relations to other species in the radical figuration of humans giving birth to sharks and dolphins. Yoldas plays with the notion of bioscientists as playing God, giving genetically modified progeny god-like features, while critically showcasing the potential of genetic engineering. Contemporary sci-art stages experiments and encounters of technoscience and human biology, thus experiments with the very 'facts of life'. These sci-art works involve critical perspectives on the technoscience of assisted reproduction including surrogacy and genetic engineering. Still, they configure nature not as threatened but as dynamic, responsive, and continually undergoing change. By expanding the perspective on human reproduction through surprising and mind-expanding figurations, they address emerging technologies as a shift to new techno-natures, entailing the ongoing merging of natural biological processes with emerging biotechnologies. [ABSTRACT FROM AUTHOR]

Assisted reproductive technology is a crucial factor that increases the incidence of monozygotic twinning in humans. This article discusses the impact of various indicators in assisted reproductive technology studies on pregnancy outcomes, especially studies with a large number of clinical cases. Furthermore, three rare cases in multiples pregnancy are discussed: fetus papyraceous of a pair of male monozygotic twins in a set of triplets, two pairs of sesquizygotic twins with sex-discordance, and rare conjoined triplets. [ABSTRACT FROM AUTHOR]

Objective: To investigate the association between different ovarian reserves and reproductive and adverse perinatal outcomes in patients with endometriosis. Design: Retrospective study. Setting: Reproductive Medicine Center in a hospital. Patients: Patients surgically diagnosed with endometriosis were divided into three groups according to their ovarian reserve: diminished ovarian reserve (DOR) group (n=66), normal ovarian reserve (NOR) group (n=160), and high ovarian reserve (HOR) group (n=141). Intervention(s): None. Main Outcome Measures: Live birth rate (LBR), cumulative live birth rate (CLBR), and adverse perinatal outcome for singleton live births. Results: There were significantly higher live birth and cumulative live birth rates in endometriosis patients with NOR or HOR than in those with DOR. For adverse perinatal outcomes, patients with NOR or HOR had no significant association with preterm birth, gestational hypertension, placenta previa, fetal malformation, abruptio placentae, macrosomia, or low birth weight, except for a decreased risk of gestational diabetes mellitus. Conclusion: Our study revealed that although patients with endometriosis with NOR and HOR had increased reproductive outcomes, patients with endometriosis with DOR had still an acceptable live birth rate and a similar cumulative live birth rate with available oocytes. Moreover, patients with NOR and HOR might not exhibit a decreased risk of abnormal perinatal outcomes, except for gestational diabetes mellitus. Multicenter prospective studies are needed to further clarify the relationship. [ABSTRACT FROM AUTHOR]

STUDY QUESTION Do twins conceived through assisted reproductive treatments (ART) grow differently from naturally conceived (NC) twins in early life? SUMMARY ANSWER Assessments at 6–8 weeks old and at school entry show that ART twins conceived from frozen embryo transfer (FET) grow faster than both NC twins and ART twins conceived from fresh embryo transfer (ET). WHAT IS KNOWN ALREADY Singletons born from fresh ET grow more slowly in utero and in the first few weeks of life but then show postnatal catch-up growth by school age, compared to NC and FET babies. Evidence on early child growth of ART twins relative to NC twins is inconsistent; most studies are small and do not distinguish FET from fresh ET cycles. STUDY DESIGN, SIZE, DURATION This cohort study included 13 528 live-born twin babies conceived by ART (fresh ET: 2792, FET: 556) and NC (10 180) between 1991 and 2009 in Scotland. The data were obtained by linking Human Fertilisation and Embryology Authority ART register data to the Scottish Morbidity Record (SMR02) and Scottish child health programme datasets. Outcome data were collected at birth, 6–8 weeks (first assessment), and school entry (4–7 years old) assessments. The primary outcome was growth, measured by weight at the three assessment points. Secondary outcomes were length (at birth and 6–8 weeks) or height (at school entry), BMI, occipital circumference, gestational age at birth, newborn intensive care unit admission, and growth rates (between birth and 6–8 weeks and between 6–8 weeks and school entry). PARTICIPANTS/MATERIALS, SETTING, METHODS All twins in the linked dataset (born between 1991 and 2009) with growth data were included in the analysis. To determine outcome differences between fresh ET, FET, and NC twins, linear mixed models (or analogous logistic regression models) were used to explore the outcomes of interest. All models were adjusted for available confounders: gestational age/child age, gender, maternal age and smoking, Scottish Index of Multiple Deprivation, year of treatment, parity, ICSI, and ET stage. MAIN RESULTS AND THE ROLE OF CHANCE In the primary birth weight models, the average birth weight of fresh ET twins was lower [–35 g; 95% CI: (−53, −16)g] than NC controls, while FET twins were heavier [71 g; 95% CI (33, 110) g] than NC controls and heavier [106 g; 95% CI (65, 146) g] than fresh ET twins. However, the difference between FET and NC twins was not significant when considering only full-term twins (≥37 weeks gestation) [26 g; 95% CI (–30, 82) g], while it was significantly higher in preterm twins [126 g; 95% CI (73, 179) g]. Growth rates did not differ significantly for the three groups from birth to 6–8 weeks. However, FET twins grew significantly faster from 6 to 8 weeks than NC (by 2.2 g/week) and fresh ET twins (by 2.1 g/week). By school entry, FET twins were 614 g [95% CI (158, 1070) g] and 581 g [95% CI (100, 1063) g] heavier than NC and fresh ET twins, respectively. Length/height and occipital frontal circumference did not differ significantly at any time point. LIMITATIONS, REASONS FOR CAUTION Although the differences between ART and NC reflect the true ART effects, these effects are likely to be mediated partly through the different prevalence of mono/dizygotic twins in the two groups. We could not explore the mediating effect of zygosity due to the unavailability of data. The confounding variables included in the study were limited to those available in the datasets. WIDER IMPLICATIONS OF THE FINDINGS Live-born twins from FET cycles are heavier at birth, grow faster than their fresh ET and NC counterparts, and are still heavier at school entry. This differs from that observed in singletons from the same cohort, where babies in the three conception groups had similar weights by school entry age. The results are reassuring on known differences in FET versus fresh ET and NC twin outcomes. However, FET twins grow faster and are consistently larger, and more ART twins depict catch-up growth. These may lead to an increased risk profile for non-communicable diseases in later life. As such, these twin outcomes require careful evaluation using more recent and comprehensive cohorts. STUDY FUNDING/COMPETING INTEREST(S) This study was funded by the EU H2020 Marie Sklodowska‐Curie Innovative Training Networks (ITN) grant Dohartnet (H2020‐MSCA‐ITN‐2018-812660). The authors have no competing interests to declare. TRIAL REGISTRATION NUMBER N/A. [ABSTRACT FROM AUTHOR]

Background: Assisted reproductive techniques services are often not accessible to the majority of infertile couples in Low and Middle Income Countries (LMIC) due to high costs. Lowering IVF laboratory costs is a crucial step to make IVF affordable for a larger part of the world population. We developed a simplified culture system (SCS) which has proven to be effective, and the next step is to prove its safety.Methods: Preterm birth (PTB) and low birthweight (LBW) of 176 singletons born after using the SCS, 105 after fresh embryo transfer (fresh ET), and 71 after frozen embryo transfer (frozen ET) were compared with all IVF/ICSI singletons born in Belgium between 2013 and 2018. When comparing our 105 SCS babies born after fresh ET with all Belgian babies born after conventional IVF only, we also adjusted for 7 risk factors known to influence perinatal outcome, namelythe mother's age, day of transfer, pituitary inhibition protocol, rank of cycles, number of oocytes retrieved, number of embryos transferred, and gender of the baby.Findings: Before adjustment, we found a significantly higher PTB (10.2% vs. 3.8%, OR 2.852, 95% CI [1.042–7.803], p-value 0.0413) and LBW (9.8% vs. 2.9%, OR 3.692, 95% CI [1.163–11.721], p-value 0.0267) in the conventional IVF group versus SCS after fresh ET. After adjusting for seven risk parameters, these differences remained significant (PTB: OR 2.627, 95% CI [1.013–6.816], p-value 0.0471) and LBW: OR 3.267, 95% CI [1.118–9.549], p-value 0.0305). PTB and LBW between both groups was not significantly different for singletons born after frozen ET. Interpretation: Taking into account the small series, PTB and LBW rates in SCS singletons in FRET cycles are very reassuring and significantly lower compared to babies born after conventional IVF in Belgium. Being aware of its effectiveness, our results offer a good perspective for SCS to become an important tool to implement low-cost IVF in LMIC. [ABSTRACT FROM AUTHOR]

Purpose: Infertility affects one in eight women in the USA. In vitro fertilization (IVF) is an effective but costly treatment that lacks uniform insurance coverage. We evaluated the current insurance coverage landscape for IVF in America. Methods: We conducted a cross-sectional analysis of 58 insurance companies with the greatest state enrollment and market share, calculated to represent the majority of Americans with health insurance. Individual companies were evaluated for a publicly available policy on IVF services by web-based search, telephone interview, or email to the insurer. Coverage status, required criteria, qualifying risk factors, and contraindications to coverage were extracted from available policies. Results: Fifty-one (88%) of the fifty-eight companies had a policy for IVF services. Thirty-five (69%) of these policies extended coverage. Case-by-case coverage was stated in seven policies (14%), while coverage was denied in the remaining nine (18%). The most common criterion to receive coverage was a documented diagnosis of infertility (n = 23, 66%), followed by care from a reproductive endocrinologist (n = 9, 26%). Twenty-three (45%) of the companies with a policy had at least one contraindication to coverage. Three companies (6%) limited the number of IVF cycles to be covered, capping payments after 3–4 lifetime cycles. Conclusion: Most Americans with health insurance are provided a public policy regarding IVF. However, there is great variation in coverage and requirements to receive coverage between insurers. Coupled with inconsistencies in state-level mandates and available choices for employer-sponsored plans, this may limit coverage of IVF services and, therefore, access to infertility treatment. [ABSTRACT FROM AUTHOR]

An abnormal endometrial microbiota has been associated with implantation failure; therefore, it may be important to evaluate it in order to improve reproductive outcomes in infertile patients. The main objective of our study was to compare the endometrial microbiome of patients with recurrent implantation failure (RIF) and control patients undergoing assisted reproduction treatment (ART). A prospective cohort study including forty-five patients with their own or donated gametes. The endometrial microbiome was analysed by massive sequencing of the bacterial 16S rRNA gene. Different bacterial communities were detected in RIF and control patients. Lactobacillus stands out as the most frequent genus, with 92.27% in RIF patients and 97.96% in control patients, and significant differences were reported between the two groups (p = 0.002). No significant differences were found regarding alpha diversity index. In beta diversity analysis, a significant trend was observed in the separation of the bacterial community between established groups (p < 0.07). Relative abundance analysis identified genera Prevotella (p < 0.001), Streptococcus (p < 0.001), Bifidobacterium (p = 0.002), Lactobacillus (p = 0.002) and Dialister (p = 0.003). Our results demonstrated the existence of an endometrial microbiota characteristic of RIF patients and showed that there might be a relationship between population of the endometrial microbiome and embryo implantation failure, providing us the possibility to improve clinical results in this patients. [ABSTRACT FROM AUTHOR]

Fertility-related stress can negatively impact infertile couples' quality of life (QoL). Most previous studies have concentrated on the effects of stress and infertility on individual persons, especially women, though infertility affects the QoL of both spouses. Our research aimed to investigate the roles of infertility and stress in couples' quality of life as a single unit. The research sample consisted of 202 spouses, i.e., 101 couples, with a mean age of 39.5 years (SD = 4.9 years) undergoing fertility treatment at Athens Naval Hospital-Assisted Reproduction Unit. Data collection was completed via self-administered questionnaires: the FertiQoL International Questionnaire for measuring the quality of life in infertility and The Demographic Information and Medical History Questionnaire. Data collection was conducted between January and November 2022. Quantitative variables are expressed as mean values (standard deviation) and as median interquartile range, and qualitative variables are expressed as absolute and relative frequencies. Pearson's (r) and Spearman's (rho) correlations coefficients were used to explore the association of two continuous variables. Multiple linear regression analysis was used with dependence on the Ferti-QoL's subscales. The regression equation included terms for participants' demographics and information from their medical history. Adjusted regression coefficients (β) with standard errors (SE) were computed from the results of the linear regression analyses. All reported p values are two-tailed. Statistical significance was set to p < 0.05, and analyses were conducted using SPSS statistical software (version 22.0). We found that greater anxiety and depression were significantly associated with worse quality of life. Additionally, quality of life, according to Ferti-QoL, was significantly worse in women, participants with a high level of education, those with greater depressive symptoms, and those with greater state scores. Findings of this study highlight the need for implementing interventions of supportive care methods, counseling, stress reduction methods, and improving the fertility-related quality of life of infertile couples. [ABSTRACT FROM AUTHOR]

Metabolic disorders due to obesity and unhealthy lifestyle directly alter the oocyte's microenvironment and impact oocyte quality. Oxidative stress and mitochondrial dysfunction play key roles in the pathogenesis. Acute effects on the fully grown oocytes are evident, but early follicular stages are also sensitive to metabolic stress leading to a long-term impact on follicular cells and oocytes. Improving the preconception health is therefore of capital importance but research in animal models has demonstrated that oocyte quality is not fully recovered. In the in vitro fertilisation clinic, maternal metabolic disorders are linked with disappointing assisted reproductive technology results. Embryos derived from metabolically compromised oocytes exhibit persistently high intracellular stress levels due to weak cellular homeostatic mechanisms. The assisted reproductive technology procedures themselves form an extra burden for these defective embryos. Minimising cellular stress during culture using mitochondrial-targeted therapy could rescue compromised embryos in a bovine model. However, translating such applications to human in vitro fertilisation clinics is not simple. It is crucial to consider the sensitive epigenetic programming during early development. Research in humans and relevant animal models should result in preconception care interventions and in vitro strategies not only aiming at improving fertility but also safeguarding offspring health. Reduced oocyte quality, mainly due to mitochondrial dysfunction, is a key cause of subfertility in patients with metabolic diseases such as obesity. Recent fundamental understanding of the underlying mechanisms highlights the importance of developing effective preconception care strategies not only to improve metabolic health, but also oocyte quality. Minimising mitochondrial oxidative stress either in vivo or in vitro is a promising solution, however further investigations should consider the long-term consequences on epigenetic programming and offspring health. [ABSTRACT FROM AUTHOR]

Objectives: To compare the reported rate of any congenital anomaly and perinatal outcome of pregnancy following blastocyst‐ vs cleavage‐stage embryo transfer using a pairwise meta‐analysis and to evaluate the same outcomes following fresh‐blastocyst, frozen‐blastocyst, fresh‐cleavage or frozen‐cleavage embryo transfer using a network meta‐analysis. Methods: A literature search was performed in PubMed, Scopus and CENTRAL and registers for ongoing studies, from inception to February 2022, for randomized controlled trials (RCTs) with any sample size and observational studies including at least 100 live births per group, comparing the rates of any congenital anomaly and perinatal outcome of pregnancy following fresh/frozen embryo transfer at cleavage (day 2–3) vs blastocyst (day 5–7) stage. Risk ratios (RRs) along with their 95% CIs were pooled via a random‐effects model meta‐analysis. Within a frequentist network meta‐analysis framework, outcomes of all four treatment modalities (i.e. fresh‐blastocyst, fresh‐cleavage, frozen‐blastocyst, frozen‐cleavage) were compared further. Any congenital anomaly constituted the primary outcome, whereas preterm delivery (delivery < 37 weeks), low birth weight (LBW; < 2500 g), gender of the neonate (male), perinatal death and healthy neonate (defined as liveborn neonate, delivered at term, weighing ≥ 2500 g, surviving for at least 28 days postbirth and without any congenital anomaly) were considered as secondary outcomes. Subgroup analyses by plurality (liveborn singleton vs multiple pregnancy) were conducted in the pairwise and network meta‐analyses. The risk of bias was assessed using the RoB2 tool for RCTs and the ROBINS‐I tool for non‐randomized studies. Certainty of evidence was assessed using GRADE. Results: Through the literature search, 550 studies were retrieved and 33 were included in the systematic review. We found no significant difference in the risk for any congenital anomaly between blastocyst‐ and cleavage‐stage transfer (RR, 0.80 (95% CI, 0.63–1.03); 10 studies; n = 192 442; I2 = 85.5%). An increased probability of a male neonate was observed following blastocyst‐ vs cleavage‐stage transfer (RR, 1.07 (95% CI, 1.06–1.09); 18 studies; n = 227 530; I2 = 32.7%). No significant differences in other secondary outcomes or significant subgroup differences between liveborn singletons and multiple pregnancies were observed. The network meta‐analysis showed a significantly lower risk for LBW following frozen‐blastocyst vs fresh‐blastocyst (RR, 0.76 (95% CI, 0.60–0.95)) or fresh‐cleavage (RR, 0.74 (95% CI, 0.59–0.93)) transfer. Frozen‐blastocyst transfer was associated with an increased risk for perinatal death compared with the fresh‐cleavage method (RR, 2.06 (95% CI, 1.10–3.88)). The higher probability of a male neonate following blastocyst transfer remained evident in the network comparisons. All outcomes were assessed to be of very‐low certainty of evidence. Conclusions: Current very‐low certainty of evidence shows that there may be little‐to‐no difference in the risk for congenital anomaly or adverse perinatal outcome of pregnancy following blastocyst‐ vs cleavage‐stage embryo transfer, although there was a slightly increased probability of a male neonate following blastocyst transfer. When considering cryopreservation, frozen‐blastocyst transfer was associated with a reduction in the risk for LBW compared with both fresh‐transfer modalities, and fresh‐cleavage transfer may be associated with a reduction in the risk for perinatal death compared with frozen‐blastocyst transfer. High‐quality RCTs with separate data on fresh and frozen cycles and consistent reporting of culture conditions and freezing methods are mandatory. Individual participant data meta‐analyses are required to address the substantial inconsistency resulting from current aggregate data approaches. © 2022 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology. [ABSTRACT FROM AUTHOR]

Background: This study aimed to analyze the clinical outcomes of blastocyst which undergo the preimplantation genetic testing (PGT) transplantation from frozen-thawed D5 and D6. In addition, the effect of blastocyst grade on clinical and neonatal outcomes was also investigated in this study.Methods: The pregnancy and miscarriage rates of 1130 cycles of frozen embryo transfer, including 784 D5 frozen embryos and 346 D6 frozen embryos in the Reproductive Hospital of Shandong University from January to December 2020 were analyzed. Gardner blastocyst scoring was used for blastocyst evaluation.Results: The pregnancy rate of D5 blastocyst was significantly higher, whereas the miscarriage rate of D5 blastocyst was lower, than that of D6 blastocyst tissue biopsy. No significant difference was observed in birth weight and low birth weight of D5 blastocyst and D6 blastocyst, preterm birth, gestational age, and neonatal sex. Frozen-thawed D5 blastocysts have higher pregnancy success rates and lower miscarriage rates compared to D6 blastocysts.Conclusion: Therefore, both blastocyst grade and embryo biopsy date must be considered when transferring frozen embryos. [ABSTRACT FROM AUTHOR]