Significant increased isolation of Escherichia coli in Iranian women with endometriosis: a case control - study.

BACKGROUND: The role of bacterial contamination in the development and progression of endometriosis lesions is currently a hot topic for gynecologists. In this study, we decided to compare the endometrial cultures of women affected by endometriosis with those of non-endometriotic women, focusing on specific microbial pathogens. MATERIAL AND METHOD: In this cross-sectional case-control study, 30 women with endometriosis in stages 4 of the disease whose endometriosis was confirmed based on clinical, ultrasound, and histopathological findings, and 30 women without endometriosis who were candidates for surgery due to benign uterine diseases with regular menstrual cycle, underwent endometrial biopsy with Novak Kort in sterile conditions before starting their operation, and the results of their endometrial culture were analyzed and compared. RESULTS: Results of the study indicate that there were no significant differences in terms of age, BMI, smoking, education level, place of residency, use of the intrauterine device, or vaginal douche, and age of menarche between the case and control groups. The only demographic difference observed was in parity, where the control group had a significantly higher parity than the case group (P = 0.001). Out of the 60 cultures, only 15 samples were positive in the endometriosis group, and E. coli was the most prevalent species, with 10 (33.3%) samples testing positive for it. Klebsiella spp. and Enterobacteria spp. were also detected in 3 (10.0%) and 2 (6.7%) samples, respectively. The comparison between the two groups showed that only E. coli had a significant association with the presence of endometriosis (P = 0.001). There was no significant relationship between the location of endometriosis in the pelvic cavity and culture results. It was observed that parity among the E. coli negative group was significantly higher compared to the E. coli positive group (P < 0.001). CONCLUSION: Based on The high occurrence of E. coli in women with endometriosis, along with its potential involvement in the progression and/or recurrence of this condition, the researchers propose that treating women with endometriosis and recurrent IVF failure, as well as those with endometriosis recurrence after surgical treatment, with suitable antibiotics and repeated culture until the culture becomes negative, could be beneficial.

[Methods for assessing the microbiological diversity of the ocular surface]. / Metody otsenki mikrobiologicheskogo raznoobraziya glaznoi poverkhnosti.

This review compares data from scientific studies on the microbial community of the ocular surface (OS) in conditionally healthy individuals using cultural methods (including culture-dependent diagnostic tests), microscopic and molecular genetic methods, and assesses the influence of research methods and sample preparation on the results. Concordance and discordance of the sets of identified microorganisms were analyzed using overlapping and non-overlapping methods of studying the microbial community of a healthy OS. The article presents tables showing the names of microorganisms that were identified in different sources. Cross-verification in taxa of different ranks helped confirm the following most frequently found microorganisms on healthy OS: coccomorphic microorganisms of the genera Staphylococcus, Micrococcus, Kocuria, Streptococcus, Enterococcus; gram-positive spore-forming bacilli of the genera Bacillus and Paenibacillus; gram-positive non-spore-forming rod-shaped bacteria, including Corynebacterium, but excluding Propionibacterium and Microbacterium; gram-negative non-spore-forming rod-shaped microorganisms of the genera Moraxella and Serratia. The study also assessed the effect of wearing soft contact lenses on the composition of the microbial community of the OS.

Tissue explants as tools for studying the epigenetic modulation of the GH-IGF-I axis in farmed fish.

Somatic growth in vertebrates is mainly controlled by the growth hormone (GH)/insulin-like growth factor I (IGF-I) axis. The role of epigenetic mechanisms in regulating this axis in fish is far from being understood. This work aimed to optimize and evaluate the use of short-term culture of pituitary and liver explants from a farmed fish, the gilthead seabream Sparus aurata, for studying epigenetic mechanisms involved in GH/IGF-I axis regulation. Our results on viability, structure, proliferation, and functionality of explants support their use in short-term assays. Pituitary explants showed no variation in gh expression after exposure to the DNA methylation inhibitor decitabine (5-Aza-2'-deoxycytidine; DAC), despite responding to DAC by changing dnmt3bb and tet1 expression, and TET activity, producing an increase in overall DNA hydroxymethylation. Conversely, in liver explants, DAC had no effects on dnmt s and tet s expression or activity, but modified the expression of genes from the GH-IGF-I axis. In particular, the expression of igfbp2a was increased and that of igfbp4, ghri and ghrii was decreased by DAC as well as by genistein, which is suggestive of impaired growth. While incubation of liver explants with S-adenosylmethionine (SAM) produced no clear effects, it is proposed that nutrients must ensure the methylation milieu within the liver in the fish to sustain proper growth, which need further in vivo verification. Pituitary and liver explants from S. aurata can be further used as described herein for the screening of inhibitors or activators of epigenetic regulators, as well as for assessing epigenetic mechanisms behind GH-IGF-I variation in farmed fish.

Toward an explanation of cultural differences in subjective well-being: the role of positive emotion norms and positive illusions.

The present research explores the role of positive emotion norms and positive illusions in explaining the higher subjective well-being observed among Europeans compared to East Asians in Canada. Specifically, we investigate the underlying psychological mechanisms contributing to the prevalence of positive self-views among individuals with European backgrounds, characterized by individualism, versus those with East Asian backgrounds, associated with collectivism. Our study compares Europeans and East Asians in Canada to determine whether cultural norms regarding positive emotions account for the elevated positive self-views and subjective well-being in Europeans. With a sample of 225 participants (112 Europeans and 113 East Asians), our findings reveal significant indirect effects of culture on subjective well-being through positive emotion norms and positive illusions. This study highlights that Europeans, compared to East Asians, believe it is more appropriate to experience and express positive emotions, and this norm influences their positive self-views, subsequently impacting subjective well-being. These findings offer valuable insights into how cultural factors shape subjective well-being across different groups.

Preparing for Value: Evaluating Organizational Culture in Health Care Transformation.

The health care industry is experiencing a transformative shift from traditional fee-for-service models to value-based care (VBC), emphasizing improved patient outcomes, enhanced quality, and reduced costs. While Centers for Medicare & Medicaid Services Innovation Center models focus on financial and quality outcomes, a critical opportunity for reform lies in organizational culture. VBC signifies a cultural and systemic evolution aligned with the quintuple aim of enhancing equitable patient outcomes, improving quality, reducing costs, and prioritizing provider well-being. Cultural impacts play a pivotal role in this transformation.

Exploring the relationship between cultural and structural workforce issues and retention of nurses in general practice: A qualitative study protocol.

AIM(S): The aim of this study is to understand factors that challenge retention and support nurses to stay in general practice. BACKGROUND: One in four general practice nurse positions in England expected to be left unfilled within the next 10 years. Cultural and structural issues associated with working in general practice have been linked with nurses leaving general practice, re-evaluating their professional futures, adjusting work-life balance and bringing forward retirement. This has implications for the future of the general practice nursing workforce and patient care more broadly. DESIGN: Exploratory qualitative interview study funded by the General Nursing Council Trust for England and Wales. University of York ethics approval (Ref: HSRGC/2023/586/A) was gained in September 2023. The study will be conducted between September 2023 and August 2024. METHODS: Qualitative interviews will be conducted with a range of nurses working in, or who have worked in, general practice as well as nurse leaders associated with general practice across England and Wales. Recruitment will be via professional and social media networks and snowballing techniques. We aim to purposively recruit 30-40 participants for maximum variation. Cultural and structural influences which may contribute to retention decisions will be explored. Data will be analysed following framework analysis. DISCUSSION/CONCLUSION: This study will explore how underpinning cultural and structural issues may impact on retention of this highly skilled professional group and identify factors to support retention. IMPLICATIONS FOR THE PROFESSION AND/OR PATIENT CARE: By exploring factors that support or discourage nurses to remain in general practice, retention strategies can be better planned on order to address the general practice nursing workforce crisis. IMPACT: What problem did the study address? This study will address the retention crisis in nursing in general practice by exploring how cultural and structural issues may impact on retention of this highly skilled professional group and identify factors to support retention. Where and on whom will the research have an impact? From the study findings, recommendations will be developed to inform future policy and practice. Key factors to address attrition will be generated to support employers and policy makers in future primary care workforce planning, as well as supporting nurses, at an individual level, in negotiating their roles in practice. REPORTING METHOD: Standards for Reporting Qualitative Research (O'Brien et al., 2014). PATIENT OR PUBLIC CONTRIBUTION: As this is a workforce study protocol, there is no patient or public contribution.

Impact of Catheter-Drawn Blood Cultures on Patient Management: A Multicenter, Retrospective Cohort Study.

Background: Nosocomial bloodstream infections associated with intravascular catheters pose significant financial burden, morbidity, and mortality. There is much debate about whether or not blood cultures should be drawn through central venous catheters, and while guidelines advocate for catheter-drawn cultures when catheter infection is suspected, there is variable practice in this regard. Methods: We performed a retrospective cohort study assessing episodes of positive catheter-drawn blood cultures with concomitant negative percutaneously-drawn cultures in tertiary care hospitals in the United States and Spain. Results: We identified 143 episodes in 122 patients meeting inclusion criteria. Thirty percent of such episodes revealed growth of potential pathogens such as Staphylococcus aureus. Overall, 21% of follow-up percutaneously-drawn blood cultures obtained within 48 hours revealed growth of the same microbe after an episode of positive catheter-drawn blood cultures with negative concomitant percutaneously-drawn cultures (33% when potential pathogens were isolated; 16% when common skin contaminants were isolated). Patients with cultures growing pathogenic organisms were more likely to receive targeted antimicrobial therapy and have their catheters removed sooner. Conclusions: Many episodes of positive catheter-drawn blood cultures with concomitant negative percutaneously-drawn cultures lead to growth from percutaneously-drawn follow-up blood cultures. Thus, such initial discordant results should not be disregarded. Our findings advocate for a nuanced approach to blood culture interpretation, emphasizing the value of catheter-drawn blood cultures in clinical decision making and management.

2024 Clinical Practice Guideline by the Infectious Diseases Society of America on Complicated Intra-abdominal Infections: Utility of Intra-abdominal Fluid Cultures in Adults, Children, and Pregnant People.

This paper is part of a clinical practice guideline update on the risk assessment, diagnostic imaging, and microbiological evaluation of complicated intra-abdominal infections in adults, children, and pregnant people, developed by the Infectious Diseases Society of America. In this paper, the panel provides recommendations for obtaining cultures of intra-abdominal fluid in patients with known or suspected intra-abdominal infection. The panel's recommendations are based upon evidence derived from systematic literature reviews and adhere to a standardized methodology for rating the certainty of evidence and strength of recommendation according to the GRADE (Grading of Recommendations Assessment, Development and Evaluation) approach.

2024 Clinical Practice Guideline Update by the Infectious Diseases Society of America on Complicated Intra-abdominal Infections: Utility of Blood Cultures in Adults, Children, and Pregnant People.

This paper is part of a clinical practice guideline update on the risk assessment, diagnostic imaging, and microbiological evaluation of complicated intra-abdominal infections in adults, children, and pregnant people, developed by the Infectious Diseases Society of America. In this paper, the panel provides recommendations for obtaining blood cultures in patients with known or suspected intra-abdominal infection. The panel's recommendations are based upon evidence derived from systematic literature reviews and adhere to a standardized methodology for rating the certainty of evidence and strength of recommendation according to the GRADE (Grading of Recommendations Assessment, Development and Evaluation) approach.

A facilitator's reflection on the democratizing potential of emancipatory practice development.

Emancipatory practice development (ePD) is a practitioner-led research methodology which enables workplace transformation. Underpinned by the critical paradigm, ePD works through facilitation and workplace learning, with people in their local context on practice issues that are significant to them. Its purpose is to embed safe, person-centred learning cultures which transform individuals and workplaces. In this article, we critically reflect on a year-long ePD study in an acute care hospital ward. We explore the challenges of practice change within systems, building collective strength with frontline collaborations and leadership to sustain new learning cultures. Our work advances practice development dialogue through working closely with the underpinning theories. Our critique analyses how ePD can enact and sustain change within a complex system. We argue that ePD works to strengthen safety cultures by challenging antidemocratic practices through communicative action. By opening communicative spaces, ePD enables staff to collectively deliberate and reach consensus. Their raised awareness supports staff to resist ways of working which conspire against safe patient care. Sustainability of practice change is fostered by the co-operative democracies created within the frontline team and meso level enablement. We conclude that the democratising potential of ePDt generates staff agency at the frontline.

Remembering the good and bad and the self and others in a culturally modulated self-memory system.

Wang and Conway (2006, Autobiographical memory, self, and culture. In L.-G. Nilsson, & N. Ohta (Eds.), Memory and society: Psychological perspectives (pp. 9-27). Psychology Press) posit that remembering takes place in a culturally modulated self-memory system in which working self-goals are shaped by society and, in turn, influence the encoding and construction of memories in a culturally canonical fashion. The current research examined the self-goal of competence, which manifests through self-enhancement versus self-improvement motivations, in influencing remembering in different cultural contexts. We conducted two cross-cultural studies to examine memories for personal successes and failures (Study 1) and autobiographical and vicarious experiences (Study 2) in connection with individuals' positive self-views. European Americans recalled a greater number of success than failure memories (Study 1) and US participants recalled a greater number of autobiographical than vicarious memories (Study 2), which was further associated with positive self-views at the individual level. In contrast, Asian (Study 1) and Chinese participants (Study 2) recalled even-handedly the different types of memories, and the memory retrieval was unrelated to individuals' self-views. We discuss the findings in light of the different manifestations of the competence goal in shaping memory in the culturally modulated self-memory system.

Feeder-free culture of human pluripotent stem cells drives MDM4-mediated gain of chromosome 1q.

Culture-acquired variants in human pluripotent stem cells (hPSCs) hinder their applications in research and clinic. However, the mechanisms that underpin selection of variants remain unclear. Here, through analysis of comprehensive karyotyping datasets from over 23,000 hPSC cultures of more than 1,500 lines, we explored how culture conditions shape variant selection. Strikingly, we identified an association of chromosome 1q gains with feeder-free cultures and noted a rise in its prevalence in recent years, coinciding with increased usage of feeder-free regimens. Competition experiments of multiple isogenic lines with and without a chromosome 1q gain confirmed that 1q variants have an advantage in feeder-free (E8/vitronectin), but not feeder-based, culture. Mechanistically, we show that overexpression of MDM4, located on chromosome 1q, drives variants' advantage in E8/vitronectin by alleviating genome damage-induced apoptosis, which is lower in feeder-based conditions. Our study explains condition-dependent patterns of hPSC aberrations and offers insights into the mechanisms of variant selection.

Abortion in the Lao People's Democratic Republic.

Ministerial Approvals in 2021 clearly articulated for the first time the wide range of circumstances under which abortion in Lao People's Democratic Republic (PDR) is legal. These approvals likely reflect norms around abortion existent since the establishment of the Lao PDR in 1975: unregulated abortion is and remains illegal, but abortion that meets certain criteria is and has always been legal in Lao PDR. The legal status of abortion was fuzzy in practice until 2021, likely due to cultural factors. Buddhist conceptions of life and morality contribute to a widespread sense that abortion is fundamentally wrong and ought to be illegal. Laos' political culture strongly values solidarity, meaning prolonged public discussion of potentially divisive topics is rare. As a result, abortion is often misunderstood in international research. For instance, Laos regularly appears on lists of the few countries where abortion is completely banned. Abortion is also not a politically charged topic in Lao PDR. Women's experiences of accessing abortion are not rooted in a rights-based discourse. Instead, abortion is a possible (and legal) path in Laos, but one that entails considerable anguish and concern about its moral and ethical consequences.

Upstream Process Protocol for MSCs Isolated from Different Human-Based Tissue Origins.

This chapter introduces the increasing significance of mesenchymal stromal/stem cell (MSC) production in regenerative medicine and cellular therapeutics, outlines the growing interest in MSCs for various medical applications, and highlights their potential in advanced therapy medicinal products (ATMPs) and the advancements in cell culture technologies that have facilitated large-scale MSC production under Good Manufacturing Practices (GMP), ensuring safety and efficacy. This chapter describes an optimized upstream protocol for laboratory-scale MSC production from different tissue sources. This protocol, conducted in flasks, controls critical parameters and lays the foundation for downstream processing to generate ATMPs. This comprehensive approach underscores the potential of MSCs in clinical applications and the importance of tailored production processes.

Effect of the data-informed platform for health intervention on the culture of data use for decision-making among district health office staff in North Shewa Zone, Ethiopia: a cluster-randomised controlled trial.

BACKGROUND: Similar to other low and middle-income countries, Ethiopia faces limitations in using local health data for decision-making.We aimed to assess the effect of an intervention, namely the data-informed platform for health, on the culture of data-based decision making as perceived by district health office staff in Ethiopia's North Shewa Zone. METHODS: By designating district health offices as 'clusters', a cluster-randomised controlled trial was implemented. Out of a total of 24 districts in the zone, 12 districts were allocated to intervention arm and the other 12 in the control group arms. In the intervention arm district health office teams were supported in four-monthly cycles of data-driven decision-making over 20 months. This support included: (a) defining problems using a health system framework; (b) reviewing data; (c) considering possible solutions; (d) value-based prioritizing; and (e) a consultative process to develop, commit to, and follow up on action plans. To measure the culture of data use for decision-making in both intervention and control arms, we interviewed 120 health management staff (5 per district office). Using a Likert scale based standard Performance of Routine Information System Management tool, the information is categorized into six domains:- evidence-based decision making, emphasis on data quality, use of information, problem solving, responsibility and motivation. After converting the Likert scale responses into percentiles, difference-in-difference methods were applied to estimate the net effect of the intervention. In intervention districts, analysis of variance was used to summarize variation by staff designation. RESULTS: The overall decision-making culture in health management staff showed a net improvement of 13% points (95% C.I:9, 18) in intervention districts. The net effect of each of the six domains in turn was an 11% point increase (95% C.I:7, 15) on culture of evidence based decision making, a 16% point increase (95% C.I:8, 24) on emphasis on data quality, a 20% point increase (95% C.I:12, 28) on use of information, a 21% point increase (95% C.I:13, 29) on problem solving, and a 10% point increase (95% C.I:4, 16) on responsibility and motivation. In terms of variation by staff designation within intervention districts, statistically significant differences were observed only for problem solving and responsibility. CONCLUSION: The data-informed platform for health strategy resulted in a measurable improvement in data use and structured decision-making culture by using existing systems, namely the Performance Monitoring Team meetings. The intervention supported district health offices in identifying and solving problems through a structured process. After further research, DIPH intervention could also be applied to other health administration and facility levels. TRIAL REGISTRATION: ClinicalTrials.gov ID: NCT05310682, Dated 25/03/ 2022.

International medical learners and their adjustment after returning to their countries of origin: a qualitative study.

INTRODUCTION: International medical trainees, including residents and fellows, must cope with many challenges, such as differences in cultural hierarchical systems, languages, and acceptance. Nonetheless, the need for adjustment perpetuates even after training is completed abroad. When some international trainees return to their countries of origin, they continue to face adjustment challenges due to reverse culture shock. Others must make many further readjustments. This study presents an exploration of the adjustment and coping strategies of international medical learners after returning to their countries of origin upon completion of their programs. METHOD: This study employed a qualitative approach grounded in interpretivism and utilised inductive thematic analysis following Braun and Clarke's method. Semi-structured, in-depth individual interviews were employed to explore the participants' coping strategies. Participants included international medical learners who were (1) international medical graduates who had already returned to their countries of origin, (2) non-Canadian citizens or nonpermanent residents by the start of the programs, and (3) previously enrolled in a residency or fellowship training programme at the University of Toronto, Ontario, Canada. RESULTS: Seventeen participants were included. Three main themes and seven subthemes were created from the analysis and are represented by the Ice Skater Landing Model. According to this model, there are three main forces in coping processes upon returning home: driving, stabilising, and situational forces. The sum and interaction of these forces impact the readjustment process. CONCLUSION: International medical learners who have trained abroad and returned to their countries of origin often struggle with readjustment. An equilibrium between the driving and stabilising forces is crucial for a smooth transition. The findings of this study can help stakeholders better understand coping processes. As healthy coping processes are related to job satisfaction and retention, efforts to support and shorten repatriation adjustment are worthwhile.

The meaning of culture in nursing at the end of life - an interview study with nurses in specialized palliative care.

BACKGROUND: The countries of the world are becoming increasingly multicultural and diverse, both as a result of growing migration, of people fleeing countries at war but also due to increased mobility related to labour immigration. Culture is a broad concept where the definitions focus on learned and shared values, traditions, and beliefs of a group of individuals. People's culture affects health and perceptions of illness as well as treatment, symptoms, and care. Moreover, people who are at the end of life, live and exist within all levels and contexts of care. Specialized palliative care requires that the nurse has sufficient knowledge and skills to be responsible for meeting the patient's nursing needs also on a cultural level, regardless of cultural affiliation. The aim of the study was to highlight nurses' experiences of the meaning of culture when caring for patients at the end of life in specialized palliative care. METHODS: The study was conducted with a qualitative design and inductive approach. Semi-structured interviews were conducted with twelve nurses in western Sweden. Data were analysed using qualitative content analysis. RESULTS: The nurses had an awareness of culture as a phenomenon and how it affected palliative care at the end of life. The results showed two categories, Awareness of the impact of culture on nursing and Culture's impact and influence on the nurse's mindset and approach, consisting of seven subcategories that highlight the nurse's experience. It emerged that there are differences between cultures regarding notions of dying and death, who should be informed, and treatments. There were also challenges and emotions that arose when cultural preferences differed among everyone involved. A person-centred approach allowed for recognition of the dying person's culture, to meet diverse cultural needs and wishes. CONCLUSION: Providing culturally competent care is a major challenge. There are often no routines or methods prescribed for how nurses should relate to and handle the diversity of cultural notions that may differ from the values and cornerstones of palliative care. Having a person-centred approach as strategy can help to better manage the situation and provide equitable care on terms that respect cultural diversity.

Cultivation of novel Atribacterota from oil well provides new insight into their diversity, ecology, and evolution in anoxic, carbon-rich environments.

BACKGROUND: The Atribacterota are widely distributed in the subsurface biosphere. Recently, the first Atribacterota isolate was described and the number of Atribacterota genome sequences retrieved from environmental samples has increased significantly; however, their diversity, physiology, ecology, and evolution remain poorly understood. RESULTS: We report the isolation of the second member of Atribacterota, Thermatribacter velox gen. nov., sp. nov., within a new family Thermatribacteraceae fam. nov., and the short-term laboratory cultivation of a member of the JS1 lineage, Phoenicimicrobium oleiphilum HX-OS.bin.34TS, both from a terrestrial oil reservoir. Physiological and metatranscriptomics analyses showed that Thermatribacter velox B11T and Phoenicimicrobium oleiphilum HX-OS.bin.34TS ferment sugars and n-alkanes, respectively, producing H2, CO2, and acetate as common products. Comparative genomics showed that all members of the Atribacterota lack a complete Wood-Ljungdahl Pathway (WLP), but that the Reductive Glycine Pathway (RGP) is widespread, indicating that the RGP, rather than WLP, is a central hub in Atribacterota metabolism. Ancestral character state reconstructions and phylogenetic analyses showed that key genes encoding the RGP (fdhA, fhs, folD, glyA, gcvT, gcvPAB, pdhD) and other central functions were gained independently in the two classes, Atribacteria (OP9) and Phoenicimicrobiia (JS1), after which they were inherited vertically; these genes included fumarate-adding enzymes (faeA; Phoenicimicrobiia only), the CODH/ACS complex (acsABCDE), and diverse hydrogenases (NiFe group 3b, 4b and FeFe group A3, C). Finally, we present genome-resolved community metabolic models showing the central roles of Atribacteria (OP9) and Phoenicimicrobiia (JS1) in acetate- and hydrocarbon-rich environments. CONCLUSION: Our findings expand the knowledge of the diversity, physiology, ecology, and evolution of the phylum Atribacterota. This study is a starting point for promoting more incisive studies of their syntrophic biology and may guide the rational design of strategies to cultivate them in the laboratory. Video Abstract.

Variations in fluid chemical potential induce fibroblast mechano-response in 3D hydrogels.

Mechanical deformation of skin creates variations in fluid chemical potential, leading to local changes in hydrostatic and osmotic pressure, whose effects on mechanobiology remain poorly understood. To study these effects, we investigate the specific influences of hydrostatic and osmotic pressure on primary human dermal fibroblasts in three-dimensional hydrogel culture models. Cyclic hydrostatic pressure and hyperosmotic stress enhanced the percentage of cells expressing the proliferation marker Ki67 in both collagen and PEG-based hydrogels. Osmotic pressure also activated the p38 MAPK stress response pathway and increased the expression of the osmoresponsive genes PRSS35 and NFAT5. When cells were cultured in two-dimension (2D), no change in proliferation was observed with either hydrostatic or osmotic pressure. Furthermore, basal, and osmotic pressure-induced expression of osmoresponsive genes differed in 2D culture versus 3D hydrogels, highlighting the role of dimensionality in skin cell mechanotransduction and stressing the importance of 3D tissue-like models that better replicate in vivo conditions. Overall, these results indicate that fluid chemical potential changes affect dermal fibroblast mechanobiology, which has implications for skin function and for tissue regeneration strategies.

Pre-clinical phaeochromocytoma and paraganglioma models: Cell lines, animal models, and a human primary culture model.

While the establishment of human phaeochromocytoma and paraganglioma (PPGL) cell lines has proven to be particularly difficult over several decades of research, there are other reliable pre-clinical PPGL models currently available. This review provides a summary of these models, together with our recently established personalised drug screening platform using patient-derived PPGL primary cultures. Such currently available PPGL models include murine and rat PPGL cell lines, of which only one cell line (PC12) is publicly accessible through a cell repository, and PPGL animal models, of which the patient-derived xenograft models are promising but complex to establish. We have developed next-generation implementation of human PPGL primary cultures, enabling reliable and personalised drug screening and an individualised analysis of tumour drug responsivity based on the tumour's unique genetic, biochemical, immunohistochemical and clinical profile. Overall, reliable PPGL models, including patient-derived primary culture models, are essential to advance pre-clinical research in the field of PPGLs.