Kisspeptin signaling in astrocytes modulates the reproductive axis.

Reproduction is safeguarded by multiple, often cooperative regulatory networks. Kisspeptin signaling, via KISS1R, plays a fundamental role in reproductive control, primarily by regulation of hypothalamic GnRH neurons. We disclose herein a pathway for direct kisspeptin actions in astrocytes that contributes to central reproductive modulation. Protein-protein-interaction and ontology analyses of hypothalamic proteomic profiles after kisspeptin stimulation revealed that glial/astrocyte markers are regulated by kisspeptin in mice. This glial-kisspeptin pathway was validated by the demonstrated expression of Kiss1r in mouse astrocytes in vivo and astrocyte cultures from humans, rats and mice, where kisspeptin activated canonical intracellular signaling-pathways. Cellular co-expression of Kiss1r with the astrocyte markers, GFAP and S100-ß, occurred in different brain regions, with higher percentage in Kiss1- and GnRH-enriched areas. Conditional ablation of Kiss1r in GFAP-positive cells, in the G-KiRKO mouse, altered gene expression of key factors in PGE2 synthesis in astrocytes, and perturbed astrocyte-GnRH neuronal appositions, as well as LH responses to kisspeptin and LH pulsatility, as surrogate marker of GnRH secretion. G-KiRKO mice also displayed changes in reproductive responses to metabolic stress induced by high-fat diet, affecting female pubertal onset, estrous cyclicity and LH-secretory profiles. Our data unveil a non-neuronal pathway for kisspeptin actions in astrocytes, which cooperates in fine-tuning the reproductive axis and its responses to metabolic stress.

Inhibitory modulation of action potentials in crayfish motor axons by fluoxetine.

The goal of this report is to explore how K2P channels modulate axonal excitability by using the crayfish ventral superficial flexor preparation. This preparation allows for simultaneous recording of motor nerve extracellular action potentials (eAP) and intracellular excitatory junctional potential (EJP) from a muscle fiber. Previous pharmacological studies have demonstrated the presence of K2P-like channels in crayfish. Fluoxetine (50 µM) was used to block K2P channels in this study. The blocker caused a gradual decline, and eventually complete block, of motor axon action potentials. At an intermediate stage of the block, when the peak-to-peak amplitude of eAP decreased to ∼60%-80% of the control value, the amplitude of the initial positive component of eAP declined at a faster rate than that of the negative peak representing sodium influx. Furthermore, the second positive peak following this sodium influx, which corresponds to the after-hyperpolarizing phase of intracellularly recorded action potentials (iAP), became larger during the intermediate stage of eAP block. Finally, EJP recorded simultaneously with eAP showed no change in amplitude, but did show a significant increase in synaptic delay. These changes in eAP shape and EJP delay are interpreted as the consequence of depolarized resting membrane potential after K2P channel block. In addition to providing insights to possible functions of K2P channels in unmyelinated axons, results presented here also serve as an example of how changes in eAP shape contain information that can be used to infer alterations in intracellular events. This type of eAP-iAP cross-inference is valuable for gaining mechanistic insights here and may also be applicable to other model systems.

Breaking the Mucin Barrier: A New Affinity Chromatography-Mass Spectrometry Approach to Unveil Potential Cell Markers and Pathways Altered in Pseudomyxoma Peritonei.

BACKGROUND: Pseudomyxoma peritonei (PMP) is a rare peritoneal mucinous carcinomatosis with largely unknown underlying molecular mechanisms. Cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy is the only therapeutic option; however, despite its use, recurrence with a fatal outcome is common. The lack of molecular characterisation of PMP and other mucinous tumours is mainly due to the physicochemical properties of mucin. RESULTS: This manuscript describes the first protocol capable of breaking the mucin barrier and isolating proteins from mucinous tumours. Briefly, mucinous tumour samples were homogenised and subjected to liquid chromatography using two specific columns to reduce mainly glycoproteins, albumins and immunoglobulin G. The protein fractions were then subjected to mass spectrometry analysis and the proteomic profile obtained was analysed using various bioinformatic tools. Thus, we present here the first proteome analysed in PMP and identified a distinct mucin isoform profile in soft compared to hard mucin tumour tissues as well as key biological processes/pathways altered in mucinous tumours. Importantly, this protocol also allowed us to identify MUC13 as a potential tumour cell marker in PMP. CONCLUSIONS: In sum, our results demonstrate that this protein isolation protocol from mucin will have a high impact, allowing the oncology research community to more rapidly advance in the knowledge of PMP and other mucinous neoplasms, as well as develop new and effective therapeutic strategies.

Complications Following Osseointegrated Transfemoral and Transtibial Implants: A Systematic Review.

Lower limb amputation is a common orthopedic surgery in the United States and can be performed either above or below the knee. Prosthetics are typically externally fitted to the patient's residual stump; however, osseointegrated implants offer a potential alternative to this process. Transcutaneous limb osseointegration involves the intramedullary anchoring of an implant that can later attach to a prosthetic via a stoma in the residual limb. There are proposed benefits to this, including decreased skin and soft tissue complications as well as an increased sense of stability. As this is a relatively new procedure, the complications and efficacy are not well supported by the literature at this time. The primary aim of this analysis was to synthesize the currently available data on transfemoral and transtibial osseointegration in order to improve our understanding of the potential complications of the procedure. A literature search was performed in the following databases: Biomedical Reference Collection, CINAHL, Cochrane Library, and PubMed/MEDLINE. Articles were screened by three independent reviewers for studies written or available in English, study design, and study outcomes, including complications. No filter was applied for publication date, publication national origin, or sample size. A total of 20 articles were selected for the final qualitative analysis. This review demonstrates an overall low or non-inferior rate of both minor and severe complications in transtibial and transfemoral osseointegration. This procedure should be considered as an option during preoperative planning in the context of above-the-knee and below-the-knee amputations. However, continued studies with larger sample sizes and extended postoperative follow-up are necessary for a greater strength of recommendation.

Empowering Underserved Communities in Southern Puerto Rico: A Formal Training Program in Community Health Promotion.

Community health promotion offers a potential solution to persistent healthcare challenges, with community health workers playing a pivotal role. The Community Training Institute for Health Disparities (CTIHD) implemented a problem-solving curriculum in Community Health Promotion, integrating a competency-based learning model through two courses: Introduction to Community Health Promotion and Design of an Action Plan for the Promotion of Community Health. Each course comprised ten three-hour sessions, featuring pre/post-tests, evaluations, and a cognitive debriefing. Knowledge change was assessed using pre/post-test scores among 27 community leaders from southern Puerto Rico. Cohort 1 and Cohort 2 demonstrated an overall retention rate of 62.6% and 96.7%, respectively. Although differences in knowledge gained between cohorts and courses weren't statistically significant, a trend toward increased knowledge was noted. Cohort 1 experienced a 22% knowledge increase in Course 1 and a 24% increase in Course 2. Cohort 2 demonstrated a 41% knowledge increase in Course 1 and a 25% increase in Course 2. The CTIHD's Community Health Promotion Program has made significant strides in elevating awareness and knowledge, marking a positive step toward reducing health disparities and fostering healthier, empowered communities in southern Puerto Rico.

Demographics of Physician Associates (PAs) in Obstetrics and Gynecology: Where They Work and How They Compare to Other PAs.

As of 2020, maternal and infant health in the US has worsened. At the same time, the number of health professionals available to manage female health issues is changing; the number of physicians in obstetrics and gynecology (Ob-Gyn) and midwives is decreasing, whereas the number of Ob-Gyn physician associates (PAs) is growing. We analyzed PAs practicing in the Ob-Gyn discipline, drawing on the PA Professional Profile, a database maintained by the National Commission on Certification of PAs. In 2021, there were 1,322 Ob-Gyn PAs (1.2% of all clinically active PAs). This health profession has grown by 66.9% since 2013, when only 792 PAs practiced in this specialty. As of 2021, their median age was 38, and 98.0% were female (70.1% of all PAs were female). The practice setting was between office (54.7%) and hospital (34.0%) employment, with 11.3% described as "other." In 2021, the median annual income of Ob-Gyn PAs was $105,000. With the reduction of obstetrician-gynecologists, the relative growth of PAs in this area of medicine and surgery is a natural part of the solution to the projected obstetrical physician deficit.

Historical Hot Spots of Dengue and Zika Viruses to Guide Targeted Vector Control in San Juan, Puerto Rico (2010-2022).

Dengue viruses (DENV) continue to cause large outbreaks in tropical countries, while chikungunya and Zika (ZIKV) viruses have added complexity to Aedes-borne disease prevention and control efforts. Because these viruses are transmitted by the same vectors in urban areas, it is useful to understand if sequential outbreaks caused by these viruses have commonalities, such as similar seasonal and spatial patterns, that would help anticipate and perhaps prevent future outbreaks. We explored and analyzed the heterogeneity of confirmed cases of DENV (2010-2014 and 2015-2022) and ZIKV (2016-2017) during outbreaks in the San Juan metropolitan area of Puerto Rico to explore their degree of overlap and prioritize areas for Aedes aegypti control. Deidentified, georeferenced case data were aggregated into grid cells (500 × 500 m) within a geographical information system of the study area and analyzed to calculate the degree of overlap between outbreaks. Spatial autocorrelations using local indicators of spatial associations were conducted to identify significant disease case hot spots and correlations between outbreaks. We found that 75% of cases during the three transmission periods were concentrated in 25% of the total number of grid cells covering the study area. We also found significant clustering of cases during each outbreak, enabling identification of consistent disease hot spots. Our results showed 85% spatial overlap between cases of ZIKV in 2015-2017 and DENV in 2010-2014 and 97% overlap between DENV cases in 2010-2014 and 2015-2022. These results reveal urban areas at greater risk of future arbovirus outbreaks that should be prioritized for vector control.

Antitumor effect of a small-molecule inhibitor of KRASG12D in xenograft models of mucinous appendicular neoplasms.

Pseudomyxoma peritonei (PMP) is a rare disease characterized by a massive accumulation of mucus in the peritoneal cavity. The only effective treatment is aggressive surgery, aimed at removing all visible tumors. However, a high percentage of patients relapse, with subsequent progression and death. Recently, there has been an increase in therapies that target mutated oncogenic proteins. In this sense, KRAS has been reported to be highly mutated in PMP, with KRASG12D being the most common subtype. Here, we tested the efficacy of a small-molecule KRASG12D inhibitor, MRTX1133, in a high-grade PMP xenograft mouse model carrying a KRASG12D mutation. The results obtained in this work showed a profound inhibition of tumor growth, which was associated with a reduction in cell proliferation, an increase in apoptosis, and a reduction in the MAPK and PI3K/AKT/mTOR signaling pathways. In conclusion, these results demonstrate the high potency and efficacy of MRTX1133 in KRASG12D-PMP tumors and provide a rationale for clinical trials.

Prevalence of alcohol, tobacco, and illicit drugs consumption during teenage pregnancy: an observational, prospective, and cross-sectional study.

BACKGROUND: Teenage pregnancy is a significant public health issue in Mexico; its prevalence oscillates around 20% of all pregnancies. Concurrently, alcohol, tobacco, and illicit drug use have become more common in this age group. METHODS: To estimate the prevalence of substance exposure in a population of pregnant teenagers, we conducted a prospective, observational, and cross-sectional study. The protocol was approved by the institutional review board. On informed consent, we asked 420 consecutive pregnant youngsters cared for at the outpatient obstetric service of a tertiary public regional women's and children's hospital in Nuevo León, in northeast Mexico, to answer a previously validated questionnaire to estimate the prevalence of alcohol, tobacco, or illicit drugs use during pregnancy. RESULTS: Of the 420 participants, 317 (75.5%) consumed at least one substance during pregnancy. Alcohol, either alone or in combination, was consumed by 300 (71.7%) participants. Tobacco was used by 117 (27.8%) participants, almost always in combination with other substances, while marijuana and other illicit drugs were consumed by 92 (21.9%) participants. Approximately one-fourth of the participants, 102 (24.1%) reported no substance use during pregnancy. CONCLUSIONS: In this series, the reported prevalence of alcohol, tobacco, and illicit drugs consumption during pregnancy, explored with a validated instrument, is higher than that previously reported in our country. This fact offers a worrying picture of another set of factors adding to the burden of teenage pregnancy.

INTRODUCCIÓN: El embarazo en la adolescencia ha adquirido gran importancia en la salud pública en México; su prevalencia oscila alrededor del 20% de los embarazos. Paralelamente, el consumo de alcohol, tabaco y drogas ilícitas en este periodo es cada vez más común en estas jóvenes. MÉTODOS: Para estimar la prevalencia de exposición a estas substancias en adolescentes embarazadas, se llevó a cabo un estudio prospectivo, observacional y transversal. El protocolo fue aprobado por los Comités de Ética e Investigación. Previo consentimiento informado, se solicito a 420 jóvenes embarazadas atendidas en la clínica prenatal del hospital materno-infantil más grande en Nuevo León, que respondieran un cuestionario previamente validado para estimar la prevalencia del consumo de substancias. RESULTADOS: De 420 participantes, 317 (75.5%) consumieron al menos una de estas sustancias durante el embarazo. El alcohol, solo o en combinación, fue consumido por 300 (71.5%). El tabaco fue usado por 117 (27.8%), casi siempre en combinación con otras sustancias, mientras que la mariguana y otras drogas ilícitas fueron consumidas por 92 (21.9%) participantes. Alrededor de una cuarta parte del grupo estudiado (24.1%) reportó no haber consumido ninguna de estas substancias en su embarazo. CONCLUSIONES: En nuestra serie, la prevalencia de consumo de alcohol, tabaco y drogas ilícitas durante el embarazo, explorada con un instrumento validado, es mayor de la reportada en estimaciones previas en nuestro país. Estos datos ofrecen un panorama preocupante de una serie de factores que se agregan a la carga del embarazo en la adolescencia.

Caracterización de pacientes operados por obstrucción intestinal mecánica

Introducción: En Cuba, la oclusión intestinal mecánica es una de las causas más frecuentes de abdomen agudo y constituye la segunda causa de cirugía de urgencia. Objetivo: Caracterizar una serie de pacientes intervenidos quirúrgicamente, con diagnóstico de obstrucción intestinal mecánica. Métodos: Se realizó un estudio observacional descriptivo transversal en sujetos atendidos durante el año 2022 en el servicio de cirugía general del Hospital Docente Clínico - Quirúrgico "Miguel Enríquez". Se estudiaron 81 pacientes; se recogieron las variables sexo, edad, antecedentes patológicos personales, hábitos tóxicos, estadía hospitalaria, causa de la oclusión intestinal, complicaciones y estado al egreso. Se realizó análisis de frecuencias. Resultados: Hubo mayor porcentaje del sexo femenino (50,6 %), de las edades comprendidas de 31 a 40 años (23,5 %), los pacientes con hipertensión arterial (14,8 %) y los fumadores (18,5 %). La causa más frecuente de oclusión fueron las bridas y adherencias (44,4 %) y la complicación más frecuente fue la bronconeumonía (8 %). Falleció solo el 3,7 % de los pacientes. Conclusiones: Los pacientes se caracterizaron por estar entre la tercera y cuarta décadas de la vida, con predominio del sexo femenino, con antecedentes de salud, sin hábitos tóxicos, con estadía hospitalaria entre 1 y 5 días, presencia de bridas y adherencias como causa de la obstrucción y baja frecuencia de complicaciones y fallecimientos.

Introduction: In Cuba, mechanical intestinal obstruction is one of the most frequent causes of acute abdomen, and is the second cause of emergency surgery. Objective: To characterize a series of patients undergoing surgery with a diagnosis of mechanical intestinal obstruction. Methods: A cross-sectional descriptive observational study was carried out in the population treated during the year 2022 in the general surgery service of the "Miguel Enríquez" Clinical-Surgical Teaching Hospital. The population was made up of 81 patients with whom we worked in its entirety. The variables sex, age, personal pathological history, toxic habits, hospital stay, cause of intestinal obstruction, complications, and status at discharge were studied. A study of absolute and relative frequencies was carried out. Methods: A cross-sectional descriptive observational study was carried out on subjects treated during 2022 in the general surgery service of the "Miguel Enríquez" Clinical-Surgical Teaching Hospital. 81 patients were studied; The variables sex, age, personal pathological history, toxic habits, hospital stay, cause of intestinal obstruction, complications and status at discharge were collected. Frequency analysis was performed. Results: There was a higher percentage of females (50.6%), aged between 31 and 40 years (23.5%), patients with high blood pressure (14.8%) and smokers (18.5%). The most common cause of occlusion was flanges and adhesions (44.4%), and the most common complication was bronchopneumonia (8%). Only 3.7% of patients died. Conclusions: The patients are characterized by being between the third and fourth decades of life, with a predominance of the female sex, with a health history, without toxic habits, with a hospital stay between 1 and 5 days, presence of flanges and adhesions as a cause of obstruction and low frequency of complications and deaths.

Prevalence of alcohol, tobacco, and illicit drugs consumption during teenage pregnancy: an observational, prospective, and cross-sectional study / Prevalencia del consumo de alcohol, tabaco y drogas ilícitas durante el embarazo en adolescentes: un estudio observacional, prospectivo y transversal

Abstract Background: Teenage pregnancy is a significant public health issue in Mexico; its prevalence oscillates around 20% of all pregnancies. Concurrently, alcohol, tobacco, and illicit drug use have become more common in this age group. Methods: To estimate the prevalence of substance exposure in a population of pregnant teenagers, we conducted a prospective, observational, and cross-sectional study. The protocol was approved by the institutional review board. On informed consent, we asked 420 consecutive pregnant youngsters cared for at the outpatient obstetric service of a tertiary public regional women´s and children´s hospital in Nuevo León, in northeast Mexico, to answer a previously validated questionnaire to estimate the prevalence of alcohol, tobacco, or illicit drugs use during pregnancy. Results: Of the 420 participants, 317 (75.5%) consumed at least one substance during pregnancy. Alcohol, either alone or in combination, was consumed by 300 (71.7%) participants. Tobacco was used by 117 (27.8%) participants, almost always in combination with other substances, while marijuana and other illicit drugs were consumed by 92 (21.9%) participants. Approximately one-fourth of the participants, 102 (24.1%) reported no substance use during pregnancy. Conclusions: In this series, the reported prevalence of alcohol, tobacco, and illicit drugs consumption during pregnancy, explored with a validated instrument, is higher than that previously reported in our country. This fact offers a worrying picture of another set of factors adding to the burden of teenage pregnancy.

Resumen Introducción: El embarazo en la adolescencia ha adquirido gran importancia en la salud pública en México; su prevalencia oscila alrededor del 20% de los embarazos. Paralelamente, el consumo de alcohol, tabaco y drogas ilícitas en este periodo es cada vez más común en estas jóvenes. Métodos: Para estimar la prevalencia de exposición a estas substancias en adolescentes embarazadas, se llevó a cabo un estudio prospectivo, observacional y transversal. El protocolo fue aprobado por los Comités de Ética e Investigación. Previo consentimiento informado, se solicito a 420 jóvenes embarazadas atendidas en la clínica prenatal del hospital materno-infantil más grande en Nuevo León, que respondieran un cuestionario previamente validado para estimar la prevalencia del consumo de substancias. Resultados: De 420 participantes, 317 (75.5%) consumieron al menos una de estas sustancias durante el embarazo. El alcohol, solo o en combinación, fue consumido por 300 (71.5%). El tabaco fue usado por 117 (27.8%), casi siempre en combinación con otras sustancias, mientras que la mariguana y otras drogas ilícitas fueron consumidas por 92 (21.9%) participantes. Alrededor de una cuarta parte del grupo estudiado (24.1%) reportó no haber consumido ninguna de estas substancias en su embarazo. Conclusiones: En nuestra serie, la prevalencia de consumo de alcohol, tabaco y drogas ilícitas durante el embarazo, explorada con un instrumento validado, es mayor de la reportada en estimaciones previas en nuestro país. Estos datos ofrecen un panorama preocupante de una serie de factores que se agregan a la carga del embarazo en la adolescencia.

La recuperación mejorada después de la cirugía, una necesidad del ahora / Enhanced Recovery After Surgery, a Current Need

Estimado editor: El protocolo de recuperación optimizada Enhanced Recovery After Surgery (ERAS)® se inició como un proyecto del autor y del profesor Kenneth Fearon de Edimburgo, en el Reino Unido en 2001.1,2 ERAS® es un conjunto de estrategias multimodales perioperatorias basadas en la evidencia, y cuya finalidad es reducir el estrés metabólico causado por el trauma quirúrgico y por apoyar la recuperación temprana del paciente. Actualmente abarca todas las cirugías abdominales mayores, las de cabeza y cuello, cardíacas y torácicas.3,4) Antes de la llegada de los protocolos ERAS, los grupos quirúrgicos tenían sus propios programas de fast track, consistían en el alivio del dolor, la alimentación y la movilización tempranas y la disminución del estrés con la anestesia regional.3 La Sociedad ERAS® estableció desde el principio que los protocolos por sí solos no eran suficientes para poder aplicarlos en lugar de los cuidados tradicionales, por lo cual se designaron centros de excelencias, encargados de implementar los programas y contribuir a su desarrollo y difusión en la región; ejemplo fiel de ello es el ERAS LatAm,3 capítulo latinoamericano de la Sociedad ERAS, que abarca...(AU)

Procedures by Physician Associates in Obstetrics and Gynecology.

Background and Objectives: The number of obstetricians and gynecologists in the United States is decreasing and providers backfilling this service have not been well described. The intent of the study was to identify the skills that physician associates (PAs) in obstetrics and gynecology (OBGyn) contribute to this aspect of medicine and surgery. Methods: A survey of PAs specializing in OBGyn was conducted in 2022. The intent was to list office-based procedures that were part of their skill set. A vetted questionnaire was sent to the 1,630 American Academy of Physician Associates members who identified themselves in OBGyn at some point in their career, and 729 responded (44.7% relative risk). Results: Most PAs (88.7%) in OBGyn first assist in surgery. This first-assist role ranged across the open, laparoscopic, and robotic-type operations. Categories of surgery included Cesarean section, hysterectomy, salpingo-oophorectomy, and subspecialty surgeries such as oncology and urogynecology. In the outpatient setting, PAs listed over 40 procedures ranging from biopsies of the endometrium, cervix, vagina, and vulva, as well as fetal assessment, ultrasonography, and long-acting contraceptive insertion and removals. Conclusions: The proceduralist role of PAs in OBGyn is broad. Furthermore, this role may need to be utilized more at a time of growing scarcity of clinicians. The OBGyn role for PAs adds to their specialization and increasing presence in American medicine.

Cambio climático y sus repercusiones psicológicas en la población / Climate Change and his Physiology Repercution on Population

Cuando nos referimos al clima no es más que el conjunto de circunstancias atmosféricas propias de una zona determinada, que caracteriza a cada región y a su vez se manifiesta por un determinado estado geográfico, además de la periodicidad de la humedad, las lluvias, las temperaturas, los vientos; dichas acciones influyen en la existencia de los seres vivos y, sobre todo, en los seres humanos. Las evidencias científicas han demostrado que existe un cambio climático por el aumento de las congregaciones atmosféricas de gases de efecto invernadero, emanados de la actividad humana. El calentamiento global en el sistema climático internacional actual es incuestionable, tiene huellas en la temperatura del aire, en los océanos, los mares, en zonas árticas, en el desprendimieto de los glaciares, las constantes precipitaciones y las sequías.1 Sin embargo Hilson2 plantea en su estudio que muchos afirman que la situación del cambio climático es exagerada o no existe, a pesar de las evidencias científicas. El cambio climático es un canje en la distribución estadística de los esquemas atmosféricos durante una etapa prolongada de tiempo, y varía de una región a otra.3 El año 2016 fue el año más caluroso del que se tenga conocimiento, según las Naciones Unidas (ONU) declaró, que había aumentado la temperatura en 1,2 oC y para 2017 la acidez del mar y los niveles de dióxido de carbono habían aumentado considerablemente.4 Consecuentemente, el cambio climático, no...(AU)

Epidemiological intelligence community network intervention: a community response for COVID-19 community transmission.

BACKGROUND: Expanding and providing access to early detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) through testing community-based strategies among socially vulnerable communities (SVC) are critical to reducing health disparities. The Epidemiological Intelligence Community Network (EpI-Net) community-based intervention sought to increase coronavirus 2019 (COVID-19) testing uptake and prevention practices among SVC in Puerto Rico (PR). We evaluated EpI-Net's community leaders' capacity-building component by assessing pre-post COVID-19 public health workshops' tests' score changes and satisfaction among trained community leaders. METHODS: A total of 24 community leaders from SVC in PR have completed four community workshops. Pre- and post-assessments were completed as part of the health promotors training program to evaluate participants' tests score changes and satisfaction outcomes. RESULTS: Preliminary results showed: (1) high intervention retention levels of community leaders (85.7% acceptance rate); (2) change in post-test scores for community engagement strategies (p = 0.012); (3) change in post-test educational scores in COVID-19 prevention practices (p = 0.014); and (4) a change in scores in public health emergency management strategies (p < 0.001). CONCLUSIONS: The overall workshop satisfaction was 99.6%. Community leaders have shown the importance of community capacity building as a key component for intervention feasibility and impact. TRIAL REGISTRATION: Our study was retrospectively registered under the ClinicalTrial.gov ID NCT04910542.

A Qualitative Approach to Explore Perceptions, Opinions and Beliefs of Communities who Experienced Health Disparities towards Chronic Health Conditions.

The prevalence of chronic medical conditions is associated with biological, behavioral, and social factors. In Puerto Rico (PR), events such as budget cuts to essential services in recent years have contributed to deepening health disparities. This study aimed to explore community perceptions, opinions, and beliefs about chronic health conditions in the southern region of Puerto Rico. Framed by a Community-Based Participatory Research (CBPR) approach, this qualitative study developed eight focus groups (n = 59) with adults (age of 21 or older) from southern Puerto Rico, in person and remotely, during 2020 and 2021. Eight open-ended questions were used for discussions, which were recorded, transcribed, and analyzed via computer analysis. Content analysis revealed four main dimensions: knowledge, vulnerabilities, barriers, and identified resources. Relevant topics included: concerns about mental health-depression, anxiety, substance use, and suicide; individual vulnerabilities-risk behaviors, and unhealthy habits; economic factors-health access and commercialization of health. Resource identification was also explored, and participants discussed the importance of alliances between public and private sectors. These topics were addressed across all focus groups, with various recommendations. The results highlight the importance of prioritizing identified community needs, evaluating available resources, and promoting tailored-made interventions to reduce risk factors for chronic health conditions.

Intraoperative oxygen tension and redox homeostasis in Pseudomyxoma peritonei: A short case series.

Introduction: Pseudomyxoma peritonei (PMP) is a rare malignant disease characterized by a massive multifocal accumulation of mucin within the peritoneal cavity. The current treatment option is based on complete cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy. However, the recurrence is frequent with subsequent progression and death. To date, most of the studies published in PMP are related to histological and genomic analyses. Thus, the need for further studies unveiling the underlying PMP molecular mechanisms is urgent. In this regard, hypoxia and oxidative stress have been extensively related to tumoral pathologies, although their contribution to PMP has not been elucidated. Methods: In this manuscript, we have evaluated, for the first time, the intratumoral real-time oxygen microtension (pO2mt) in the tumor (soft and hard mucin) and surrounding healthy tissue from five PMP patients during surgery. In addition, we measured hypoxia (Hypoxia Inducible Factor-1a; HIF-1α) and oxidative stress (catalase; CAT) markers in soft and hard mucin from the same five PMP patient samples and in five control samples. Results: The results showed low intratumoral oxygen levels, which were associated with increased HIF-1α protein levels, suggesting the presence of a hypoxic environment in these tumors. We also found a significant reduction in CAT activity levels in soft and hard mucin compared with healthy tissue samples. Discussion: In conclusion, our study provides the first evidence of low intratumoral oxygen levels in PMP patients associated with hypoxia and oxidative stress markers. However, further investigation is required to understand the potential role of oxidative stress in PMP in order to find new therapeutic strategies.