Attitudes towards people living with HIV/AIDS through the EAPVVS-E: A descriptive analysis in nursing students.

BACKGROUND: Despite advances in antiretroviral treatment, stigma towards people with HIV/AIDS continues to exist. Nursing students, as future key players in health care, must advocate for the elimination of stigma through education, empathy and the creation of a supportive environment. This holistic approach is crucial to improving their quality of life and moving towards the eradication of HIV/AIDS. AIM: To identify nursing students' attitudes towards people living with HIV or AIDS and their relationship with sociodemographic and academic-cultural variables of the participants. DESIGN: A cross-sectional study was performed. SETTINGS: The research was carried out in the Nursing Degree of the Faculty of Health Sciences of the Ceuta Campus of the University of Granada. PARTICIPANTS: Convenience sampling was used to recruit 284 students of the degree in Nursing. METHODS: Data were collected voluntarily and on an anonymous basis, using the "Attitudes Towards People Living with HIV/AIDS Scale in Nursing Students". Bivariate and multivariate analyses were performed. RESULTS: Factors 1 (Professional Practice), 2 (Social Integration) and 3 (Partner and Family) exhibited mean scores considered to be favourable attitudes (>4 points). In contrast, Factor 4, called Benevolent Stigma, had a mean score of 3.68 ± 0.97. Religious beliefs, academic year, sexual orientation, academic practices and age are considered influential variables in the different factors. CONCLUSIONS: Nursing students present attitudes with favourable scores. However, these results highlight the importance of influencing the different factors, especially in the second year of the Bachelor's Degree in Nursing in our sample. Thus, an educational intervention in this area would be necessary to reinforce the values of humanised care.

Prevalence of Unwanted Loneliness and Associated Factors in People over 65 Years of Age in a Health Area of the Region of Murcia, Spain: HELPeN Project.

Background/Objectives: Population aging poses many challenges to public health, highlighting loneliness and social isolation as severe problems that affect the physical and mental health of older adults. During the COVID-19 pandemic, these became aggravated. The objective of the present study was to assess the prevalence of loneliness and its relationship with social isolation, depression, cognitive deterioration, sleep quality, and the level of physical mobility and functioning of older adults in Health Area 3 of the Region of Murcia. Methods: A descriptive, observational, and cross-sectional study was performed. The inclusion criteria were age ≥ 65, living in Health Area 3 of the Region of Murcia, and not being institutionalized. The following variables were evaluated: sociodemographic variables, loneliness (UCLA scale), social isolation (DUFSS), depression (GDS), cognitive deterioration (Pfeiffer), sleep quality (PSQI), and mobility (Barthel index). A univariate and multivariate regression model was created to examine how the dependent variable was related to the independent variables. Results: A total of 102 older adults participated in the study. Of these, 31.4% perceived unwanted loneliness and 14.7% low social support. The multivariate regression analysis showed that social isolation, geriatric depression, and cognitive deterioration were significant predictors of loneliness. Conclusions: The findings highlight the importance of developing multifaceted interventions that address not only social isolation but also other interrelated factors such as depression, cognitive deterioration, and sleep quality. The strategies should be centered on community programs and support networks. It is fundamental to perform longitudinal studies to better understand the causal relationships between these variables.

Sex-dependent effects of acute stress and alcohol exposure during adolescence on mRNA expression of brain signaling systems involved in reward and stress responses in young adult rats.

BACKGROUND: Adolescent stress and alcohol exposure increase the risk of maladaptive behaviors and mental disorders in adulthood, with distinct sex-specific differences. Understanding the mechanisms underlying these early events is crucial for developing targeted prevention and treatment strategies. METHODS: Male and female Wistar rats were exposed to acute restraint stress and intermittent alcohol during adolescence. We assessed lasting effects on plasma corticosterone (CORT) and adrenocorticotropic hormone (ACTH) levels, and mRNA expression of genes related to corticotropin releasing hormone (CRH), neuropeptide Y (NPY), corticoid, opioid, and arginine vasopressin systems in the amygdala and hypothalamus. RESULTS: The main findings are as follows: (1) blood alcohol concentrations (BAC) increased after the final alcohol administration, but stressed males had lower BAC than non-stressed males; (2) Males gained significantly more weight than females; (3) Stressed females showed higher ACTH levels than non-stressed females, with no changes in males; (4) Stress increased CORT levels in males, while stressed, alcohol-treated females had lower CORT levels than non-stressed females; (5) CRH: Females had lower Crhr1 levels in the amygdala, while alcohol reduced Crhr2 levels in males but not females. Significant interactions among sex, stress, and alcohol were found in the hypothalamus, with distinct patterns between sexes; (6) NPY: In the amygdala, stress reduced Npy and Npy1r levels in males but increased them in females. Alcohol decreased Npy2r levels in males, with varied effects in females. Similar sex-specific patterns were observed in the hypothalamus; (7) Corticoid system: Stress and alcohol had complex, sex-dependent effects on Pomc, Nr3c1, and Nr3c2 in both brain regions; (8) Opioid receptors: Stress and alcohol blunted the elevated expression of Oprm1, Oprd1, and Oprk1 in the amygdala of males and the hypothalamus of females; (8) Vasopressin: Stress and alcohol interacted significantly to affect Avp and Avpr1a expression in the amygdala, with stronger effects in females. In the hypothalamus, alcohol increased Avp levels in females. CONCLUSIONS: This study demonstrates that adolescent acute stress and alcohol exposure induce lasting, sex-specific alterations in systems involved in reward and stress responses. These findings emphasize the importance of considering sex differences in the prevention and management of HPA dysfunction and psychiatric disorders.

A review on the encapsulation of "eco-friendly" compounds in natural polymer-based nanoparticles as next generation nano-agrochemicals for sustainable agriculture and crop management.

Crop management techniques and sustainable agriculture offer a comprehensive farming method that incorporates social, economic, and ecological factors. Sustainable agriculture places a high priority on soil health, water efficiency, and biodiversity conservation in order to develop resilient and regenerative food systems that can feed both the current and future generations. Our goal in this review is to give a thorough overview of current developments in the use of polysaccharides as raw materials for the encapsulation of natural chemicals in nanoparticles as novel crop protection products. The search for recent research articles and latest reviews has been carried out through pubmed, google scholar, BASE as search engines. Offer cutting-edge solutions for sustainable crop management that satisfy the demands of an expanding population, comply with changing legal frameworks, and address environmental issues by encasing natural compounds inside polysaccharide-based nanoparticles. A variety of natural substances, such as essential oils, plant extracts, antimicrobials compounds and miRNA, can be included in these nanoparticles. These materials have many advantages, such as biocompatibility, biodegradability and controlled release of active compounds. Thanks to their action mechanism, they are able to mediate hormone signaling and gene expression in different plant physiological aspects, as well as enhance their tolerance to abiotic stress conditions. Sustainable agriculture can be supported by this type of treatments, correctly developing food safety through the production of non-toxic nanoparticles, low-cost industrial scale-up and the use of biodegradable materials. Polysaccharide-based nanoparticles have a wide range of uses in agriculture: they improve crop yields, encourage "eco-friendly" farming methods and can decrease the concentrations of active ingredient used, providing an accurate and affective dosage without damaging further species, as well as avoiding treatment resistance risks. These nanoparticles can also reduce the negative effects of chemical fertilizers and pesticides, contributing to the environmentally friendly agricultural development. Furthermore, the application of polysaccharide-based nanoparticles is consistent with the expanding trend of green and sustainable agriculture.

Evaluation of the Let's Focus! (Posem el Focus) Socioeducational Intervention: Promoting Healthy and Equitable Relationships in High Schools.

INTRODUCTION: Gender-based violence is a worldwide problem. School-based socio-educational interventions could be effective in preventing gender-based violence. We assessed the effectiveness of the Let's focus! program, aimed at health and equitable interpersonal relationships among high school students. METHODS: We conducted a quasi-experimental study in an intervention group (IG, n = 560) and a comparison group (CG, n = 366) of secondary school students in Terrassa, Spain between 2019 and 2021. Specifically, we performed an online questionnaire on sexism, acceptance of violence and machismo at baseline and after the intervention. We calculated multivariate linear regression models including satisfaction with the intervention, to evaluate the change in the variables' mean between CG and IG. RESULTS: In comparison to the CG, in the IG hostile and benevolent sexism, and acceptance of violence decreased from baseline to after-intervention, in the group of participants highly satisfied with the intervention (42.4%); machismo did not vary. The multivariate regression analyses showed that the intervention was effective in reducing hostile sexism (ß = -6.40; CI95% (-11.92; -0.88)), benevolent sexism (ß = -5.57; CI95% (-10.52;-0.61)), and acceptance of violence (ß = -4.79; CI95% (-9.50; -0.09)) in highly satisfied students from the IG, in comparison to the ones from the CG, regardless of their age or gender. DISCUSSION: Let's Focus! was effective in reducing sexism and decreasing acceptance of violence among students that were highly satisfied with the intervention.

A landscape of liver cirrhosis and transplantation in Mexico: Changing leading causes and transplant as response.

Liver cirrhosis causes include alcoholism, viral infections (hepatitis B virus (HBV) and hepatitis C virus (HCV)), alcohol-associated liver disease (ALD), and metabolic dysfunction associated with steatotic liver disease (MASLD), among others. Cirrhosis frequency has increased in recent years, with a prevalence of 1395 cases per 100,000 and a mortality rate of 18 per 100,000, which corresponded to 1,472,000 deaths during 2017. In Mexico, liver disease is a public health problem since it was associated to 41,890 deaths in 2022, including liver cirrhosis (>25,000) and ALD (14,927). This represents 114 individuals daily due to these causes, and correspond to the 4th to 5th place of all causes. The global prevalence of MASLD is estimated to 25 % of the world's population, while in pediatric population could be higher. In Mexican population is more prevalent since estimations are up to 41.3 % in 2023. Alcohol consumption, a global health issue due to its high prevalence and associated morbidities, is associated to ALD in 32.9 %, with a mortality rate of 23.9 %, primarily due to liver-related causes. In Mexico, ALD is present in 23 % of all cirrhosis cases. already surpassed by hepatitis B cases in 2009. HCV and HBV frequencies changed due programs implementing screening detection, vaccines and direct-acting antivirals during the last years. A switch of causes has occurred, increasing MASLD and diminishing viral causes. Efficient performed liver transplantation has grown as response to increasing cirrhosis cases, including recent authorized centers. These efforts are necessary, whereas preventive strategies should be implemented according to leading causes.

First consensus document of waiting list prioritization for liver transplantation by the Spanish Society of Liver Transplantation (SETH).

Spain is worldwide leader in deceased donation rates per million habitants and count on a strong network of twenty-five liver transplant institutions. Although the access to liver transplantation is higher than in other countries, approximately 10% of patients qualifying for liver transplantation in Spain will die in the waiting list or would be excluded due to clinical deterioration. A robust waiting list prioritization system is paramount to grant the sickest patients with the first positions in the waiting list for an earlier access to transplant. In addition, the allocation policy may not create or perpetuate inequities, particularly in a public and universal healthcare system. Hitherto, Spain lacks a unique national allocation system for elective liver transplantation. Most institutions establish their own rules for liver allocation and only two autonomous regions, namely Andalucía and Cataluña, share part of their waiting list within their territory to provide regional priority to patients requiring more urgent transplantation. This heterogeneity is further aggravated by the recently described sex-based disparities for accessing liver transplantation in Spain, and by the expansion of liver transplant indications, mainly for oncological indications, in absence of clear guidance on the optimal prioritization policy. The present document contains the recommendations from the first consensus of waiting list prioritization for liver transplantation issued by the Spanish Society of Liver Transplantation (SETH). The document was supported by all liver transplant institutions in Spain and by the Organización Nacional de Trasplantes (ONT). Its implementation will allow to homogenize practices and to improve equity and outcomes among patients with end-stage liver disease.

Clinical outcomes and complications of a new high-density polyethylene-based spherical integrated porous orbital implant.

PURPOSE: To describe our experience over 6 years using a new high-density polyethylene-based spherical integrated porous orbital implants (Oculfit). METHODS: This is an observational retrospective case series study analyzing all cases requiring Oculfit implants between February 2015 and September 2021. Clinical information regarding the population included, the characteristics of the implant, and the outcomes and complications during the follow-up were noted. The success of the implant was defined according to anatomical and functional parameters. RESULTS: The study analyzed 90 cases of anophthalmic patients. The main causes for enucleation or evisceration were ocular decompensations (36.7%) and neoplasms (27.8% uveal melanoma and 7.8% retinoblastoma). Anatomical success was identified in 63 (70.0%) cases, functional success in 79 (87.8%) and complete success (anatomical + functional) in 61 (67.7%) cases. Factors associated with the functional success were age and exposure of the primary orbital implant. Complications appeared in 11 (12.2%) cases, which were completely resolved without sequelae in 4 (4.4%). Orbital explant was required in 5 (5.6%) cases. CONCLUSION: In our experience, Oculfit can be considered a useful alternative among the currently available options for orbital implants and has a good efficacy/safety profile.

No evidence of mutations associated with anticoagulant resistance in gene Vkorc1 in brown and black rats from Barcelona.

Synanthropic rodents such as the brown rat (Rattus norvegicus) and black rat (Rattus rattus) are a source of disturbance in urban areas and the focus of control programs. Control measures often rely on anticoagulant rodenticides, but their broad use is compromised by the emergence of resistance. Here we studied the prevalence of anticoagulant resistance genotypes in the Vkorc1 gene in rats in the metropolitan area of Barcelona. In this area, part of the management practices to control brown rats include anticoagulant rodenticide use, but rodenticides with different active ingredients are used in rotation. Brown rats were sampled from the sewage system during two periods: from December 2016 to November 2017 when difenacoum and brodifacoum were used, and from August 2021 to July 2022 when bromadiolone was used. Because black rats have just recently been detected in Barcelona, we only studied them during the latter sampling period, with samples obtained from a control action carried out in a green urban area. Exon 3 of the Vkorc1 gene was characterized in both species, while exon 1 was additionally analyzed in black rats. Synonymous mutations, not resulting in amino-acid changes, were found in both exons, indicating no evidence of anticoagulant resistance in the rats of Barcelona. This finding indicates that the current rodent management plan in Barcelona, which involves anticoagulant rotation for brown rats and the use of life capture traps in specific situations for black rats, has helped to prevent the emergence of resistance to anticoagulant rodenticides in rats in Barcelona. Future actions should aim to diversify the control measures included in the rodent management plan.

Similarities and differences between systemic juvenile idiopathic arthritis and adult-onset Still's disease: a multicenter Spanish study.

To describe the characteristics of systemic juvenile idiopathic arthritis (sJIA) and adult-onset Still's disease (AOSD), compare their presentation and evolution, and analyse possible complication predictors. Multicenter study. Data were retrieved from a hospital-based study of patients with a diagnosis or suspected diagnosis of sJIA or AOSD according to the responsible physician and followed-up for at least one year. Descriptive variables (classification criteria, clinical manifestations, complications, family, and personal history) were collected at disease onset and during follow-up. We present the clinical characteristics of 326 patients, 67% of whom had a diagnosis of sJIA and 33% of AOSD. Clinical manifestation frequencies were similar between the two groups, except for odynophagia, which was significantly more frequent in AOSD than in sJIA (78.4% vs. 25.5%; p < 0.0001). Among the complications, macrophage activation syndrome (MAS) was significantly more common in sJIA than in AOSD (24.4% vs. 9.5%; p = 0.002), to the extent that an sJIA diagnosis significantly increased the risk of MAS, together with serositis presence, and the need for biological therapy. Patients with sJIA and AOSD showed similar characteristics, supporting the idea that they are both part of Still's disease, but are expressed at different ages. Differences in manifestations and complications might be due to different management between diseases and immune response maturity.

Resistance to the insect vector Bemisia tabaci enhances the robustness and durability of tomato yellow leaf curl virus resistance conferred by Ty-1.

Tomato yellow leaf curl virus (TYLCV) is a begomovirus (genus Begomovirus, family Geminiviridae) transmitted persistently by the whitefly Bemisia tabaci. It causes tomato yellow leaf curl disease (TYLCD), resulting in significant yield losses worldwide. TYLCD is controlled mainly by using F1 hybrid tomato cultivars harboring the TYLCV resistance gene Ty-1. However, infected Ty-1-bearing tomato plants accumulate viral DNA, which may eventually lead to the emergence of a resistance-breaking TYLCV variant. Recently, a B. tabaci-resistant tomato line derived from the introgression of type IV leaf glandular trichomes and acylsucrose secretion from wild tomato (Solanum pimpinellifolium) was shown to effectively control the spread of TYLCV. In this study, we combined B. tabaci resistance and Ty-1-based TYLCV resistance to increase the robustness and durability of the TYLCD resistance mediated by Ty-1 in tomato plants. Specifically, we characterized and used a Group 2-like isolate of the Israel strain of TYLCV (TYLCV-IL-G2) that contributes to TYLCD epidemics in southeastern Spain. A comparison with isolates of the previously identified TYLCV variant revealed TYLCV-IL-G2 has a similar host range, but it induces a slightly more severe TYLCD in Ty-1-bearing tomato plants. Moreover, we demonstrated that acylsucrose-producing B. tabaci-resistant tomato plants can limit the spread of TYLCV-IL-G2 better than a near-isogenic line lacking type IV trichomes and unable to secrete acylsucrose. Pyramiding Ty-1-based TYLCV resistance and B. tabaci resistance provided by type IV glandular trichomes helped to decrease the effects of TYLCV on Ty-1-bearing tomato plants as well as the likelihood of TYLCV evolution in infected plants.

CRISPR/Cas9-mediated multiplex gene editing of gamma and omega gliadins, paving the way for gliadin-free wheat.

Wheat is a staple cereal in the human diet. Despite its significance, an increasing percentage of the population suffers adverse reactions to wheat, which are triggered by wheat gluten, particularly the gliadin fractions. In this study, we employed CRISPR/Cas multiplexing to introduce targeted mutations into γ- and ω-gliadin genes of wheat, to produce lines deficient in one or both immunogenic gliadin fractions simultaneously. For this work, eight single guide RNAs (sgRNAs) were designed and combined into four plasmids to produce 59 modified wheat lines, of which 20 exhibited mutations in the target genes. Characterization of these lines through Sanger or NGS sequencing revealed a complex pattern of InDels, including deletions spanning multiple sgRNAs. The mutations were transmitted to the offspring, and the analysis of homozygous derived lines by RP-HPLC and monoclonal antibodies showed a 97.7% reduction in gluten content. Crossing these lines with other CRISPR/Cas lines deficient in the α-gliadins allowed multiple mutations to be combined. This work represents an important step forward in the use of CRISPR/Cas to develop gluten-free wheat.

Shorter prostatic urethral length in preoperative Magnetic Resonance Imaging is associated with higher risk of climacturia following robot-assisted laparoscopic radical prostatectomy.

Climacturia is defined as the leakage of urine during orgasm and it is an adverse effect of radical prostatectomy. Our goal was to determine if various preoperative MRI pelvic floor measurements were associated with the risk of climacturia following robot-assisted laparoscopic radical prostatectomy. For this purpose, we conducted a prospective study involving 57 patients who underwent robot-assisted laparoscopic radical prostatectomy. MRI measurements were analysed by 2 urologists and 2 radiologists. Follow-up was carried out at 3, 6, and 12 months using the Parra orgasmic function questionnaire. We analysed all measurements, along with other patient, surgery, and tumour characteristics, classifying patients into two groups based on the presence or absence of climacturia. A logistic regression model was applied among statistically significant variables. STROBE recommendations were taken into consideration. Shorter prostatic urethral length was associated with higher risk of climacturia at 3 months, OR = 0.83 (95%CI 0.688-0.98) (p = 0.024). Patients with climacturia at 6 months had greater median urethral width [12.66 mm, interquartile range (IQR): 11.77-13.55 vs 12.13 mm, IQR 11.08-13.18] (p = 0.02). Patients with climacturia at 12 months had a higher proportion of preoperative lower urinary tract symptoms (57.14% vs. 20%) (p = 0.026). In the logistic regression, the history of lower urinary tract symptoms was associated with a higher risk of climacturia, OR = 6.07 (95% CI 1.342-26.03) (p = 0.023). In conclusion, shorter prostatic urethral length in preoperative MRI and a history of lower urinary tract symptoms were associated with a higher risk of climacturia following robot-assisted laparoscopic radical prostatectomy.

Impact of Long SARS-CoV-2 Omicron Infection on the Health Care Burden: Comparative Case-Control Study Between Omicron and Pre-Omicron Waves.

BACKGROUND: Following the initial acute phase of COVID-19, health care resource use has escalated among individuals with SARS-CoV-2 infection. OBJECTIVE: This study aimed to compare new diagnoses of long COVID and the demand for health services in the general population after the Omicron wave with those observed during the pre-Omicron waves, using similar assessment protocols for both periods and to analyze the influence of vaccination. METHODS: This matched retrospective case-control study included patients of both sexes diagnosed with acute SARS-CoV-2 infection using reverse transcription polymerase chain reaction or antigen tests in the hospital microbiology laboratory during the pandemic period regardless of whether the patients were hospitalized. We included patients of all ages from 2 health care departments that cover 604,000 subjects. The population was stratified into 2 groups, youths (<18 years) and adults (≥18 years). Patients were followed-up for 6 months after SARS-CoV-2 infection. Previous vaccination, new diagnoses, and the use of health care resources were recorded. Patients were compared with controls selected using a prospective score matched for age, sex, and the Charlson index. RESULTS: A total of 41,577 patients with a history of prior COVID-19 infection were included, alongside an equivalent number of controls. This cohort encompassed 33,249 (80%) adults aged ≥18 years and 8328 (20%) youths aged <18 years. Our analysis identified 40 new diagnoses during the observation period. The incidence rate per 100 patients over a 6-month period was 27.2 for vaccinated and 25.1 for unvaccinated adults (P=.09), while among youths, the corresponding rates were 25.7 for vaccinated and 36.7 for unvaccinated individuals (P<.001). Overall, the incidence of new diagnoses was notably higher in patients compared to matched controls. Additionally, vaccinated patients exhibited a reduced incidence of new diagnoses, particularly among women (P<.001) and younger patients (P<.001) irrespective of the number of vaccine doses administered and the duration since the last dose. Furthermore, an increase in the use of health care resources was observed in both adult and youth groups, albeit with lower figures noted in vaccinated individuals. In the comparative analysis between the pre-Omicron and Omicron waves, the incidence of new diagnoses was higher in the former; however, distinct patterns of diagnosis were evident. Specifically, depressed mood (P=.03), anosmia (P=.003), hair loss (P<.001), dyspnea (<0.001), chest pain (P=.04), dysmenorrhea (P<.001), myalgia (P=.011), weakness (P<.001), and tachycardia (P=.015) were more common in the pre-Omicron period. Similarly, health care resource use, encompassing primary care, specialist, and emergency services, was more pronounced in the pre-Omicron wave. CONCLUSIONS: The rise in new diagnoses following SARS-CoV-2 infection warrants attention due to its potential implications for health systems, which may necessitate the allocation of supplementary resources. The absence of vaccination protection presents a challenge to the health care system.

Molecular and morphological analysis revealed a new Lipoptena species (Diptera: Hippoboscidae) in southern Spain harbouring Coxiella burnetii and bacterial endosymbionts.

Hippoboscid flies (Diptera: Hippoboscidae) are obligate bloodsucking ectoparasites of animals. In Europe, limited research has been conducted on this family until the recent introduction of the deer ked Lipoptena fortisetosa Maa, 1965. A new species of the genus Lipoptena, Lipoptena andaluciensis sp. nov., was found in southern Spain after extensive sampling with carbon-dioxide baited suction traps. A total of 52 females and 32 males were collected at 29 out of 476 sites examined over eight months in 2023. Lipoptena andaluciensis sp. nov. was characterized morphologically and molecularly. The new Lipoptena species can be differentiated from the closely related L. fortisetosa by size, chaetotaxy of the dorsal and ventral thorax, abdominal plates, and genitalia. Based on DNA-barcoding, our specimens showed the highest similarity with Melophagus ovinus (Linnaeus, 1758) (88.4 %) and with L. fortisetosa (86-88 %). Individual screening of Lipoptena specimens (n = 76) for seven important zoonotic pathogens such as bacteria (Anaplasmataceae family: Bartonella spp., Borrelia spp., Coxiella burnetii and Rickettsia spp.) and protozoans (Babesia spp. and Theileria spp.) by conventional PCR and RT-PCR was performed. DNA of C. burnetii was detected in one specimen, while two other specimens harboured Anaplasmataceae (Wolbachia spp., 100 % homology and another endosymbiont probably related to Arsenophonus sp., 95.3 % homology, respectively), all representing the first records of these bacteria in the Lipoptena spp. from Europe. Carbon dioxide traps probed its effectiveness as a reliable passive method for keds surveillance. Our study highlights the existence of a new Lipoptena species, presumably widely distributed in southern Spain. The role of this species in the transmission cycle of pathogens of medical-veterinary relevance needs to be considered in the area.

Environmental pollution challenges public health surveillance: the case of mercury exposure and intoxication in Brazil.

Pollution, causing millions of deaths annually, disproportionally affects low- and middle-income countries (LMICs). Mercury ranks among the three main chemicals of major public health concern, and even low levels can cause cardiovascular and nervous outcomes, with children and indigenous populations being especially vulnerable. Nearly 80% of all emissions in South America originate from the Amazon. Brazil, the fifth-largest contributor to global mercury emissions, exemplifies the challenges faced by LMICs in effectively monitoring and addressing mercury exposure/intoxication. Despite having powerful tools such as SINAN (a digital platform for compulsory disease reporting), and Community Health Agents, data reveals significant underreporting, especially in the Amazon. Furthermore, SINAN has important delays in its update: for instance, 196 cases of Munduruku Indigenous people in 2019 have only been included in 2023. In this Personal View, we outline insightful recommendations to enhance public health surveillance and implement enduring, effective strategies to monitor, report and address mercury exposure/intoxication, focusing on the Brazilian Amazon. Although these recommendations are tailored to the challenges of this country, they hold potential for adaptation by other Amazonian countries facing similar issues (high mercury emissions and the presence of vulnerable populations, among others).

The Transcription Factor TCF21 is necessary for adoption of cell fates by Foxd1+ stromal progenitors during kidney development.

Normal kidney development requires coordinated interactions between multiple progenitor cell lineages. The Foxd1+ stromal progenitors are critical for normal nephrogenesis and their heterogeneity is increasingly appreciated. However, the molecular mechanisms and trajectories that drive the differentiation of Foxd1+ cells toward the renal stroma, capsule, mesangial cells, renin cells, pericytes, and vascular smooth muscle cells (VSMCs) are poorly understood. Recent work has implicated Tcf21, a mesoderm-specific bHLH transcription factor critical for embryogenesis, in the development of the kidney stroma and perivascular cells. To investigate the role of Tcf21 in Foxd1+ cells, we performed single-cell RNA sequencing (scRNA-seq) on GFP+ cells from E14.5 Foxd1 Cre ;Rosa26 mTmG ;Tcf21 f/f kidneys ( Tcf21 -cKO) and Foxd1 Cre controls. Clustering of the entire dataset identified a large stromal population and a smaller representation of non-stromal lineages. Subclustering of stromal cells identified six populations associated with healthy kidney development: medullary/perivascular, proliferating, differentiating nephron, nephrogenic zone-associated, collecting duct-associated, and ureteric. Loss of Tcf21 resulted in a dramatic reduction in the medullary/perivascular, proliferating, nephrogenic zone-associated, and collecting duct-associated stromal subpopulations. Immunostaining confirmed that Tcf21 -cKO has a severe constriction of the medullary and collecting duct-associated stromal space. We identified and validated a cluster unique to Tcf21 -cKO kidneys exhibiting mosaic expression of genes from nephrogenic, proliferating, medullary, and perivascular stromal cells spanning across all pseudotime, suggesting cells halted in the midst of differentiation. These findings underscore a critical role for Tcf21 in the emergence of Foxd1+ derivatives, with loss of Tcf21 leading to a shift in stromal cell fates that results in abnormal kidney development. NEW & NOTEWORTHY: The mechanisms responsible for the emergence of renal stromal heterogeneity has been unknown. Using scRNA-seq on Foxd1+ enriched cells from E14.5 kidneys, we identified seven molecularly distinct stromal populations and their regional association. The data suggest that the transcription factor Tcf21 regulates the adoption of fates by Foxd1+ cells that is required to form the normal milieu of stromal derivatives for the development of a kidney of normal size and function.