Effects and Eradication of Mycoplasma Contamination on Patient-derived Colorectal Cancer Organoid Cultures.

Patient-derived organoids are a useful platform for identification and testing of novel precision oncology approaches. Patient-derived organoids are generated by direct culture of patient samples. However, prior to development into patient-derived organoids, these samples are often processed for clinical use, opening the potential for contamination by Mycoplasma and other microbes. While most microbes can be detected by visual inspection, Mycoplasma can go undetected and have substantial impacts on assay results. Given the increased use of patient-derived organoids, there is a growing need for a standardized protocol to detect and remove Mycoplasma from organoid models. In the current study, we report a procedure for Mycoplasma removal by passaging organoids through mice as patient-derived organoid xenografts. In vivo passage of patient-derived organoids followed by re-establishment was 100% effective at decontaminating colorectal patient-derived organoids (n = 9), based on testing with the Sigma LookOut Mycoplasma PCR Detection Kit. This process can serve as a method to re-establish contaminated patient-derived organoids, which represent precious models to study patient-specific genomic features and treatment responses. SIGNIFICANCE: Organoids are valuable models of cancer. Mycoplasma contamination can alter organoid drug sensitivity, so there is a need for a standardized protocol to detect and remove Mycoplasma from organoids. We report a simple procedure for removing Mycoplasma from organoids via in vivo passaging through mice followed by re-establishment of organoids.

Allometric scaling of metabolic rate and cardiorespiratory variables in aquatic and terrestrial mammals.

While basal metabolic rate (BMR) scales proportionally with body mass (Mb ), it remains unclear whether the relationship differs between mammals from aquatic and terrestrial habitats. We hypothesized that differences in BMR allometry would be reflected in similar differences in scaling of O2 delivery pathways through the cardiorespiratory system. We performed a comparative analysis of BMR across 63 mammalian species (20 aquatic, 43 terrestrial) with a Mb range from 10 kg to 5318 kg. Our results revealed elevated BMRs in small (>10 kg and <100 kg) aquatic mammals compared to small terrestrial mammals. The results demonstrated that minute ventilation, that is, tidal volume (VT )·breathing frequency (fR ), as well as cardiac output, that is, stroke volume·heart rate, do not differ between the two habitats. We found that the "aquatic breathing strategy", characterized by higher VT and lower fR resulting in a more effective gas exchange, and by elevated blood hemoglobin concentrations resulting in a higher volume of O2 for the same volume of blood, supported elevated metabolic requirements in aquatic mammals. The results from this study provide a possible explanation of how differences in gas exchange may serve energy demands in aquatic versus terrestrial mammals.

Corrigendum: Psymberin, a marine-derived natural product, induces cancer cell growth arrest and protein translation inhibition.

[This corrects the article DOI: 10.3389/fmed.2022.999004.].

In their own words: recovery after emergency general surgery in the older patient.

Objectives: Emergency general surgery (EGS) conditions, such as perforated intestines or complicated hernias, can lead to significant postoperative morbidity and mortality. We sought to understand the recovery experience of older patients at least 1 year after EGS to identify key factors for a successful long-term recovery. Methods: We conducted semi-structured interviews to explore recovery experiences of patients and their caregivers after admission for an EGS procedure. We screened patients who were aged 65 years or older at the time of an EGS operation, admitted at least 7 days, and still alive and able to consent at least 1 year postoperatively. We interviewed the patients, their primary caregiver, or both. Interview guides were developed to explore medical decision making, patient goals and expectations surrounding recovery after EGS, and to identify barriers and facilitators of recovery. Interviews were recorded and transcribed, and we used an inductive thematic approach to analysis. Results: We performed 15 interviews (11 patients and 4 caregivers). Patients wanted to return to their prior quality of life, or 'get back to normal.' Family was key in providing both instrumental support (eg, for daily tasks such as cooking, driving, wound care) and emotional support. Provision of temporary support was key to the recovery of many patients. Although most patients returned to their prior lifestyle, some also experienced depression, persistent abdominal effects, pain, or decreased stamina. When asked about medical decision making, patients expressed viewing the decision for having an operation not as a choice but, rather, the only rational option to treat a severe symptom or life-threating illness. Conclusions: There is an opportunity in healthcare to provide better education for older patients and their caregivers around instrumental and emotional support to bolster successful recovery after emergency surgery. Level of evidence: Qualitative study, level II.

Associations between adverse childhood experiences and obstetrical outcomes in a predominantly Black-identifying and low-income pregnant population.

BACKGROUND: Recent literature indicates that adverse childhood experiences have been associated with poor obstetrical outcomes, including pregnancy loss, preterm birth, and low birthweight. Several studies have been conducted in primarily self-identified White individuals who report middle to high income levels. Less is known about the impact of adverse childhood experiences on obstetrical outcomes in minority-identifying and low-income populations, who are known to experience a greater number of adverse childhood experiences and are at higher risk of maternal morbidity. OBJECTIVE: This study aimed to examine associations between adverse childhood experiences and a broad range of obstetrical outcomes among predominantly Black-identifying pregnant persons who have low income and live in an urban area. STUDY DESIGN: This is a single-center retrospective cohort study of pregnant persons referred to a mental healthcare manager because of elevated psychosocial risks identified by screening tools or provider concerns during the study period from April 2018 to May 2021. Pregnant persons aged <18 years and those who did not speak English were excluded. Patients completed validated mental and behavioral health screening tools including the Adverse Childhood Experiences Questionnaire. Medical charts were reviewed for obstetrical outcomes, including preterm birth, low birthweight, hypertensive disorders of pregnancy, gestational diabetes mellitus, chorioamnionitis, sexually transmitted infection, maternal group B streptococcus carrier status, type of delivery, and attendance of a postpartum visit. Associations between high (≥4) and very high (≥6) of 10 adverse childhood experience score and obstetrical outcomes were analyzed using bivariate analysis and multivariate logistic regression, adjusting for confounding factors (significant at P<.05 in bivariate analysis). RESULTS: Our cohort included 192 pregnant persons, of whom 176 (91.7%) self-identified as Black or African American and 181 (94.8%) had public insurance (used as a proxy for low income). Adverse childhood experience score ≥4 was reported by 91 (47.4%) individuals and score ≥6 by 50 (26%). On univariate analysis, adverse childhood experience score ≥4 was associated with preterm birth (odds ratio, 2.17; 95% confidence interval, 1.02-4.61). Adverse childhood experience score ≥6 was associated with hypertensive disorders of pregnancy (odds ratio, 2.09; 95% confidence interval, 1.05-4.15) and preterm birth (odds ratio, 2.29; 95% confidence interval, 1.05-4.96). After accounting for chronic hypertension, associations between adverse childhood experience score and obstetrical outcomes were no longer significant. CONCLUSION: Approximately half of the pregnant persons referred to a mental healthcare manager had a high adverse childhood experience score, underscoring the high burden of childhood trauma on populations facing long-standing systemic racism and barriers to healthcare access. High and very high adverse childhood experience score may be associated with chronic health conditions that predate pregnancy and can alter obstetrical outcomes. Obstetrical care providers have a unique opportunity to mitigate risk of associated poor health outcomes during preconception and prenatal care by screening for adverse childhood experiences.

What If We Do Not Operate? Outcomes of Nonoperatively Managed Emergency General Surgery Patients.

INTRODUCTION: Although two-thirds of patients with emergency general surgery (EGS) conditions are managed nonoperatively, their long-term outcomes are not well described. We describe outcomes of nonoperative management in a cohort of older EGS patients and estimate the projected risk of operative management using the NSQIP Surgical Risk Calculator (SRC). MATERIALS AND METHODS: We studied single-center inpatients aged 65 y and more with an EGS consult who did not undergo an operation (January 2019-December 2020). For each patient, we recorded the surgeon's recommendation as either an operation was "Not Needed" (medical management preferred) or "Not Recommended" (risk outweighed benefits). Our main outcome of interest was mortality at 30 d and 1 y. Our secondary outcome of interest was SRC-projected 30-day postoperative mortality risk (median % [interquartile range]), calculated using hypothetical low-risk and high-risk operations. RESULTS: We included 204 patients (60% female, median age 75 y), for whom an operation was "Not Needed" in 81% and "Not Recommended" in 19%. In this cohort, 11% died at 30 d and 23% died at 1 y. Mortality was higher for the "Not Recommended" cohort (37% versus 5% at 30 d and 53% versus 16% at 1 y, P < 0.05). The SRC-projected 30-day postoperative mortality risk was 3.7% (1.3-8.7) for low-risk and 5.8% (2-11.8) for high-risk operations. CONCLUSIONS: Nonoperative management in older EGS patients is associated with very high risk of short-term and long-term mortality, particularly if a surgeon advised that risks of surgery outweighed benefits. The SRC may underestimate risk in the highest-risk patients.

Safety Does Not Happen by Accident: Preventing Human Error Through High-Reliability Practices.

Systems-level solutions are needed to combat human fallibility in health care delivery. We propose 3 key strategies to promoting patient safety: incorporating work-aids into clinical workflows, promoting interdisciplinary collaboration and teamwork, and investing in a culture of psychological safety.

A Comprehensive Unit-based Safety Program to Improve Perioperative Efficiency in Adolescent Idiopathic Scoliosis.

BACKGROUND: Addressing operational inefficiencies in operating rooms (ORs) enhances patient access to care, reduces delays, and improves employee and patient satisfaction. The Comprehensive Unit-based Safety Program (CUSP) promotes patient safety through increased teamwork, empowerment of frontline staff, and utilization of science of safety principles. CUSP has demonstrated success in outpatient and inpatient settings to decrease complication rates and establish a culture of safety but has been used minimally in the perioperative setting. In this study, the CUSP methodology was utilized to improve perioperative efficiency in pediatric spine surgery, and preimplementation and postimplementation efficiency were compared, using the rate of first case on-time starts (FCOTS) as the primary metric. METHODS: A CUSP quality improvement workgroup including nurses, technicians, surgeons, anesthesiologists, and administrators sought feedback on opportunities for improvement and tracked key performance metrics in the OR from 2015 to 2020. Key interventions developed in response to feedback included standardizing and streamlining room setup and adjusting staffing models for greater efficiency. Univariate analysis was conducted to compare time periods pre-CUSP and post-CUSP implementation. RESULTS: First case on-time starts increased from 38% to a high of 81% after implementation. For more complex cases, the average patient in the room to anesthesia ready time improved by 31% with decreased variance over time, and average closure to patient out of room time improved by 45%. Improvements were sustained through Year 3, while CUSP remained a primary focus for the team. CONCLUSIONS: CUSP is effective in enhancing perioperative efficiency, demonstrating strong improvement in on-time starts over 5 years. The results indicate that process improvement in ORs requires consistent attention to sustain gains over time. Engaging frontline staff in quality improvement fosters collaboration and provides employee buy-in to promoting a culture of safety and improving value in patient care. LEVEL OF EVIDENCE: Level III-retrospective comparative study.

Psymberin, a marine-derived natural product, induces cancer cell growth arrest and protein translation inhibition.

Colorectal cancer (CRC) is the third most prevalent form of cancer in the United States and results in over 50,000 deaths per year. Treatments for metastatic CRC are limited, and therefore there is an unmet clinical need for more effective therapies. In our prior work, we coupled high-throughput chemical screens with patient-derived models of cancer to identify new potential therapeutic targets for CRC. However, this pipeline is limited by (1) the use of cell lines that do not appropriately recapitulate the tumor microenvironment, and (2) the use of patient-derived xenografts (PDXs), which are time-consuming and costly for validation of drug efficacy. To overcome these limitations, we have turned to patient-derived organoids. Organoids are increasingly being accepted as a "standard" preclinical model that recapitulates tumor microenvironment cross-talk in a rapid, cost-effective platform. In the present work, we employed a library of natural products, intermediates, and drug-like compounds for which full synthesis has been demonstrated. Using this compound library, we performed a high-throughput screen on multiple low-passage cancer cell lines to identify potential treatments. The top candidate, psymberin, was further validated, with a focus on CRC cell lines and organoids. Mechanistic and genomics analyses pinpointed protein translation inhibition as a mechanism of action of psymberin. These findings suggest the potential of psymberin as a novel therapy for the treatment of CRC.

Associations Between Adverse Childhood Experiences and Prenatal Mental Health and Substance Use Among Urban, Low-Income Women.

This study examined associations between Adverse Childhood Experiences (ACEs) and perinatal mental health and substance use among 98 low-income women (mean age 25.4 years; 93% Black/African American) referred to a mental health care manager in an urban women's clinic. Self-report and retrospective chart review data were utilized. Chi-squared and Fisher's Exact tests were performed to assess bivariate relationships between ACEs and mental health and substance use outcomes. Multivariate logistic regressions were used to examine the impact of ACEs on mental health and substance use, adjusting for marital status, education, and age. Findings indicate high levels of childhood adversity, specifically childhood abuse, are associated with negative perinatal mental health and substance use outcomes, including suicidal thoughts, anxiety, mood dysregulation, and tobacco and marijuana use. Inquiring about ACEs during prenatal care and/or in community health clinics may help identify patients' overall risk and provide opportunities for intervention for mothers and their infants.

The #PalliativeCare Conversation on Twitter: An Analysis of Trends, Content, and Caregiver Perspectives.

CONTEXT: Palliative care is known to improve patients' quality of life, but oftentimes these conversations occur outside of the health-care setting. OBJECTIVES: To characterize the #PalliativeCare Twitter network and evaluate the caregiver experience within palliative care. METHODS: In this cross-sectional study, a total of 182,661 #PalliativeCare tweets by 26,837 users from June 1, 2015 to June 1, 2019 were analyzed using Symplur Signals. Analysis included activity metrics, content analysis, user characteristics, engagement, and network analysis. Similar metrics were performed on tweets by self-identified caregivers (482), who wrote a total of 3952 tweets. Qualitative analysis was completed on a systematic sample of caregiver tweets. RESULTS: The number of #PalliativeCare tweets, users, and impressions has increased by an annual average of 18.7%, 16.4%, and 32.5%, respectively. Support, access, and patients were among the Trending Terms. About 39.4% of Trending Articles were scientifically valid, and information about palliative care and comorbidities had the greatest number of articles. The majority of users wrote five or less #PalliativeCare tweets. Network analysis revealed central hubs to be palliative care advocacy organizations and physicians. The five main themes from qualitative analysis of caregiver tweets were 1) advocacy and events, 2) care strategies, 3) resources, 4) public health issues, and 5) myths related to palliative care. CONCLUSION: The use of Twitter as a platform for palliative care conversations is growing rapidly. Twitter serves as a platform to facilitate #PalliativeCare conversation among patients, caregivers, physicians, and other healthcare providers.

Evaluating Medication Habits in Medical Mission Patients: A Cross-Sectional Study.

Background Short-term medical missions (STMMs) are a highly debated and largely understudied form of international volunteer work. With growing dedication to health care abroad, research evaluating their impact is crucial to ensure continued interventions are effective in improving medical care. STMM care varies in length, frequency, size, location, services offered, and country of origin and destination. This makes systematic evaluation of STMMs difficult. In addition, the transient nature of patient visits makes trending STMM's impact on long-term health outcomes complex. Despite intermittent availability, primary care missions offering pharmaceutical supplies have the unique opportunity to provide continued care to the community via free prescription supplies each visit. Given the challenges with measuring long-term outcomes in this population, it is unknown if these donated medications have any impact on patient health outcomes. As medication noncompliance is known to hinder health outcomes, our study chose to evaluate patient medication habits to see if these prescription supplies were being utilized appropriately. To our knowledge, no study has surveyed medical mission patients to explore their access and utilization of medication. Methods A cross-sectional study was conducted using a patient survey to identify risks and/or factors associated with medication noncompliance in patients visiting the medical mission, Waves of Health (WOH). For over 10 years, WOH has organized biannual seven-day trips to the Dominican Republic. The multi-question survey was translated into the native language, Spanish with Dominican dialect. Noncompliance was defined through the survey question "Did you run out of your prescription medication at all during the past year?" Spanish speaking participants, of both sexes and age ≥18 years old, who visited the mission clinic in November 2019 met inclusion for this study. Patients from Haiti or age <18 years old were excluded. Participation was voluntary. Survey items were dichotomized for univariate analysis to identify factors associated with running out of medication. To explore predictors of running out of medicine, we performed multivariate logistic regression analysis by ENTER method.  Results Of 127 patients, over half (58.3% [74]) reported running out of medication. Inadequate access to healthcare, daily medication use, and rationing personal medications were all significantly associated with running out of medicine. Frequency of WOH visits was not associated with running out of medication. Multivariate regression showed that being on daily medication and rationing personal medications were statistically significant predictors of running out of medicines. Access to healthcare, frequency of WOH visits, and WOH medication supply were not predictors of running out of medication. Conclusion  Mission interventions to improve medication practices should be explored due to the high number of patients who reported improper utilization of medication. In order to improve health outcomes in primary care settings, patients must play an active role in their care and understand the importance of taking their medication as prescribed for optimal disease management. Primary care STMMs may relieve short-term health concerns, but without proper utilization of chronic disease medications, it is unclear if STMMs role is impactful in long-term health outcomes.

48-Hour Hospice Home Immersion Encourages Osteopathic Medical Students to Broaden Their Views on Dying and Death.

To augment learning about interprofessional palliative and end-of-life care, the University of New England College of Osteopathic Medicine immersed 2 second-year osteopathic medical students in an 18-bed acute care hospice home in Scarborough, Maine, for 48 hours. The students worked with an interprofessional staff and independently to provide patient care, family support, and postmortem care. For data collection, students wrote in journals before the immersion experience (prefieldwork), while living in the hospice home (fieldwork), and for 10 days following the immersion experience (postfieldwork). The students recorded their subjective and objective reporting of observations, experiences, feelings, and patient/family encounters. Data analyses included a review of the journals, identifying thematic categorizations, and coding through content analysis. Three themes identified in the students' journals reflected shared experiences: (1) shifting perspectives, (2) path to family acceptance, and (3) emotional journey. The students learned how to converse with patients and families about end-of-life care while ensuring attainment of patients' goals. They also learned about the importance of helping patients enjoy life's simple pleasures like taking them outside to enjoy the sunshine, and they learned to trust themselves when handling emotional and difficult situations. Each student gained confidence in her ability to help guide patients through this stage of life.

Influence of environmental factors on macrofoulant assemblages on moored buoys in the eastern Arabian Sea.

Factors governing the distribution of organisms in the pelagic ocean are understudied. In this paper we describe environmental parameters and macrofouling assemblages on 11 buoys deployed in the Arabian Sea for an average duration of 322 days. Macrofoulants on all the mooring components extending from the sea-surface to a depth of 1800-4300 m were documented. Role of temperature, salinity, dissolved oxygen, biological productivity and zooplankton community in governing the macrofoulant distribution are described. Species composition, vertical zonation and wet biomass exhibited significant spatial variations. Lepas anatifera constituted more than 90% of foulant wet biomass on all moorings. Assemblages in the southeastern (SEAS), east-central (ECAS) and northeast (NEAS) regions were distinct. Density of L. anatifera on surface buoys were low in SEAS (0.2±0.09 no./cm2), high in ECAS (0.32±0.11 no./cm2) and moderate in NEAS (0.23±0.04no./cm2). Macrofoulants were observed up to a depth of 75 m in SEAS, 130 m in ECAS and 120 m in NEAS. The depth profile of macrofoulant assemblages on moorings could be related to the prevalent hypoxic condition. Vertical profiles of wet biomass on all moorings exhibited subsurface maxima at depth ranging from 10 to 20 m, consequent to the abundance of L. anatifera in a thermally stable depth of water column, wherein diurnal and semidiurnal temperature variability was minimal. We attribute the observed variation in fouling assemblages to dissolved oxygen levels, salinity and diurnal variability in temperature and salinity.

Profile, risk factors and outcome of occupational injuries reported to the emergency department in a tertiary care hospital in South India.

BACKGROUND: India is an industrialised country and most work is labour intensive. There is very scarce data on occupation related injuries. AIM: To evaluate the prevalence, profile, severity and risk factors for occupational injuries presenting to the emergency medicine department of a tertiary care hospital. MATERIALS AND METHODS: A cross-sectional study was done in the emergency department of Christian Medical College, Vellore among the patients who presented with occupational injuries. The risk factors for occupational injuries like age, gender, shift work, work experience and type of work and their severity and outcome were evaluated. RESULTS: Older age group, working in shift duty, working longer hours were significant risk factors for occupational injuries. CONCLUSION: Training and use of safety protective measures will decrease occupational injuries.

The Affordable Care Act: Long-Term Financial Impact on a Level I Trauma Center.

BACKGROUND: Prior studies of the impact of the Affordable Care Act on reimbursement for inpatient trauma care do not include disproportionate share hospital (DSH) funding. Because trauma centers and other safety-net hospitals are sensitive to any changes in financial support, it is essential to include DSH funding in evaluating overall reimbursement. This study analyzes the long-term financial trends, including DSH, of a level I trauma center in Ohio, a state that expanded Medicaid. METHODS: Charges, reimbursement, sources of insurance coverage, Injury Severity Scores, and DSH funding for the trauma patient population of an Ohio American College of Surgeons level 1 trauma center were studied from 2012 to 2017. Data were collected from Transition Systems, Inc. RESULTS: During 2012-2017, self-pay patient cases decreased from 15.0% to 4.1% and commercial insurance patients decreased from 34.2% to 27.6%. The percentage of Medicaid patients increased from 15.5% to 27.1%; however, Medicaid reimbursement average per case declined from $17,779 in 2012 to $10,115 in 2017 (a decline of 43.1%). Self-pay charges decreased from $22.0 million to $6.7 million. Total DSH funding, compensation given to hospitals that disproportionately treat underserved populations, decreased 17.4%. CONCLUSIONS: Self-pay charges and self-pay patients decreased dramatically; Medicaid patients and charges increased substantially in the years after the implementation of the Affordable Care Act at our trauma center. However, there was a decrease in commercial insurance, which had the highest reimbursement for our hospital, and a significant decline in DSH, a critical supplemental source of funding for safety-net hospitals.

Mobile health applications for atrial fibrillation: A readability and quality assessment.

BACKGROUND: Mobile health applications may improve patient education and self-care for a complex condition such as atrial fibrillation (AF). Little is known about the accessibility of mobile health applications ("apps") and their readability. We evaluated the readability and quality of available apps for AF. METHODS: We searched the Apple and Google Play app stores with the terms "atrial fibrillation" and "afib." We downloaded English-language apps (up to n = 100 for each term) and categorized them by name, App store, cost, content, uploading agency (heath care associated [HCA] versus non-HCA), target audience (health care professional [HCP] versus non-HCP), scientific validity (i.e., citation of peer-reviewed or validated medical information), and user ratings. We analyzed the text of apps intended for a non-HCP target audience for readability with 10 established measures. RESULTS: Of the 206 downloaded apps, 50.5% were excluded as unrelated to AF, inaccessible, or non-English language. The majority of apps contained information about AF (63.2% Apple, 52.2% Google Play) and AF detection (52.6% Apple, 56.5% Google Play). A minority of non-HCP apps contained scientifically validated content (Apple, 15.8%; Google Play, 13.0%; P = NS). App mean readability was grade 12.1 ±â€¯2.6. CONCLUSIONS: Most AF apps lacked scientific validation and were written at excessively high reading-grade levels. Our results suggest caution with mobile health apps, particularly for users with limited health literacy. There is potential opportunity for a multi-disciplinary effort by regulatory agencies, healthcare organizations, and app stores to improve relevance, scientific validity, and readability of AF apps for patients with this complex and morbid disease.

A New Test for the Detection of Direct Oral Anticoagulants (Rivaroxaban and Apixaban) in the Emergency Room Setting.

Determining whether a patient has taken a direct oral anticoagulant (DOAC) is critical during the periprocedural and preoperative period in the emergency department. However, the inaccessibility of complete medical records, along with the generally inconsistent sensitivity of conventional coagulation tests to these drugs, complicates clinical decision making and puts patients at risk of uncontrollable bleeding. In this study, we evaluate the utility of inhibitor-II-X (i-II-X), a novel, microfluidics-based diagnostic assay for the detection and identification of Factor Xa inhibitors (FXa-Is) in an acute care setting. DESIGN: First-in-human, 91-patient, single-center retrospective pilot study. SETTING: Emergency room. PATIENTS: Adult patients admitted into the emergency department, which received any clinician-ordered coagulation test requiring a 3.2% buffered sodium citrate blood collection tube. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Plasma samples from patients admitted to the emergency department were screened for the use of FXa-Is, including apixaban and rivaroxaban, within the past 24 hours using our new i-II-X microfluidic test. i-II-X results were then compared with results from conventional coagulation tests, including prothrombin time (PT) and international normalized ratio (INR), which were ordered by treating clinicians, and an anti-Xa assay for rivaroxaban. The i-II-X test detected DOACs in samples collected from the emergency department with 95.20% sensitivity and 100.00% specificity. Unlike PT and INR, i-II-X reliably identified patients who had prolonged clotting times secondary to the presence of a FXa-I. CONCLUSIONS: The i-II-X test overcomes the limitations of currently available coagulation tests and could be a useful tool by which to routinely screen patients for DOACs in emergency and critical care settings. Our new diagnostic approach is particularly relevant in clinical situations where medical records may be unavailable, or where precautions need to be taken prior to invasive interventions, such as specific reversal agent administration.

Caste-Specific Expression of Na+/K+-ATPase in the Asian Weaver Ant, Oecophylla smaragdina (Fabricius, 1775).

Social insect colonies adopt different levels of survival strategies and exhibit well-defined reproductive division of labour. Oecophylla smaragdina (Fabricius, 1775) has physiological and behavioral adaptations that enable them to forage at extreme environmental conditions and are lethal to most other insects. Ion homeostasis is the key process in an organism's survival mechanism. Among ion pumps, the ATP-dependent sodium-potassium ion pump is essential for maintaining the Na+ and K+ ionic balance and is well known as the primary consumer of energy. Oecophylla smaragdina plays pivotal role as a model among social insects for understanding ion homeostasis at the organization level of the castes. We have evaluated the expression and activity of Na+/K+-ATPase among various castes of O. smaragdina (worker subcastes, queen and male). Real-time PCR and immunoblotting analyses revealed the differential expression of Na+/K+-ATPase in the castes. Significantly higher expression of Na+/K+-ATPase mRNA and protein were observed in the minor workers, queen, major workers and males respectively. These results suggest that in the weaver ant colony, the castes might have variously adapted and evolved with a well-developed ion transport mechanism which allows them to perform allocated tasks within the nest and could be a key to their adaptive benefits towards division of labour.