Effect of SeaFeed, a canola oil infused with Asparagopsis armata, on methane emissions, animal health, performance, and carcass characteristics of Angus feedlot cattle.

The objectives of this project were to measure the effect of SeaFeed, a canola oil infused with Asparagopsis armata, on methane emissions, animal health, performance, and carcass characteristics of feedlot cattle. Angus steers (n = 160) with an initial body weight of 474.4 kg were fed a steam-flaked wheat and barley ration for 200 d in a large, commercial feedlot. A single-blinded randomized complete block design compared two treatments including control and SeaFeed included at a rate of 25 mg bromoform per kg dry matter intake (DMI). Monthly testing of bromoform levels in the canola demonstrated that SeaFeed maintained a stable bromoform concentration for 6 mo. The inclusion of SeaFeed had no effect on daily DMI. However, steers fed SeaFeed were more efficient with a 6.6% higher (P < 0.01) gain-to-feed ratio as compared to control steers over the 200-d feeding period. This improved efficiency resulted in 0.094 kg higher (P < 0.01) average daily gain and 19.7 kg higher (P < 0.01) live exit weight in steers fed SeaFeed as compared to control steers. Steers fed SeaFeed produced 51.7% less (P < 0.01) methane and yielded 50.5% less (P < 0.01) methane over the 200-d feeding period as compared to cattle fed the control ration. Peak methane inhibition occurred on day 29 on feed with 90.6% less methane production in cattle fed SeaFeed as compared to control animals. SeaFeed reduced (P < 0.01) methane intensity by 55.4% over the 200-d feeding period. Hot carcass weight tended (P = 0.097) to be 6.9 kg heavier in cattle fed SeaFeed as compared to controls. Cattle fed SeaFeed had similar (P > 0.20) marbling, meat color, eye muscle, area, and ultimate pH to control cattle. Interestingly, cattle fed SeaFeed tended (P = 0.054) to have slightly higher fat color scores. Rumen papillae from cattle fed SeaFeed were more (P < 0.01) gray in color and more oval (P < 0.01) in shape as compared to control animals; however, rumen damage was not different between treatment groups. In regards to food safety and residues, all muscle, fat, and kidney samples were free from bromoform residues. Bromine residues in kidney and meat samples were higher (P < 0.01) in the SeaFeed group as compared to controls. Cattle fed SeaFeed produced strip loin steaks similar (P > 0.05) in eating quality to control cattle. These results demonstrate that SeaFeed reduced methane emissions, improved performance, and produced safe beef with similar eating quality to conventional beef.

Clinical Outcomes in Patients Who Received a One-Time Aminoglycoside Dose for Extended-Spectrum Beta-Lactamase-Producing Enterobacterales or Pseudomonas aeruginosa Cystitis.

The Infectious Diseases Society of America (IDSA) recommends a single dose of an aminoglycoside for uncomplicated cystitis caused by extended-spectrum beta-lactamase (ESBL)-producing Enterobacterales (ESBL-E) and difficult-to-treat Pseudomonas aeruginosa. However, there is very little recent clinical evidence to support this recommendation. The objective of this study was to evaluate the safety and efficacy of a single-dose aminoglycoside for cystitis caused by ESBL-E or Pseudomonas aeruginosa. This was a multicenter, retrospective, cohort study. Patients who received ≥3 days of standard of care were compared to patients who received a one-time dose of an aminoglycoside with or without a short course of effective therapy before. The primary outcome was the rate of relapse defined as requiring escalation of antibiotics or starting new antibiotic therapy within 14 days after the completion of antibiotics. A total of 66 patients were included in this study, with 33 patients in each arm. There were more males and complicated cystitis patients in the standard-of-care group. There was no difference found in the rate of relapse. The length of stay was significantly shorter in the aminoglycoside group (4.5 ± 4.4 days vs. 14.1 ± 10.1 days, p < 0.0001). A one-time dose of an aminoglycoside did not increase the risk of relapse and was associated with a shorter length of stay when used to treat cystitis caused by ESBL-E or Pseudomonas aeruginosa.

Rh immune globulin immunoprophylaxis after RhD-positive red cell exposure in RhD-negative patients via transfusion: A survey of practices.

BACKGROUND: Current Association for the Advancement of Blood & Biotherapies (AABB) standards require transfusion services to have a policy on Rh immune globulin (RhIG) immunoprophylaxis for when RhD-negative patients are exposed to RhD-positive red cells. This is a survey of AABB-accredited transfusion services in the United States (US) regarding institutional policies and practices on RhIG immunoprophylaxis after RhD-negative patients receive RhD-positive (i.e., RhD-incompatible) packed red blood cell (pRBC) and platelet transfusions. RESULTS: Approximately half of the respondents (50.4%, 116/230) have policies on RhIG administration after RhD-incompatible pRBC and platelet transfusions, while others had policies for only pRBC (13.5%, 31/230) or only platelet (17.8%, 41/230) transfusions, but not both. In contrast, 18.3% (42/230) report that their institution has no written policies on RhIG immunoprophylaxis after RhD-incompatible transfusions. Most institutions (70.2%, 99/141) do not have policies addressing safety parameters to mitigate the risk of hemolysis associated with the high dose of RhIG required to prevent RhD alloimmunization after RhD-incompatible pRBC transfusions. DISCUSSION: With approximately half of US AABB-accredited institutions report having policies on RhIG immunoprophylaxis after both RhD-incompatible pRBC and platelet transfusions, some institutions may not be in compliance with AABB standards. Further, most with policies on RhIG immunoprophylaxis after RhD-incompatible pRBC transfusion do not have written safeguards to mitigate the risk of hemolysis associated with the high dose of RhIG required. CONCLUSION: This survey underscores the diverse and inadequate institutional policies on RhIG immunoprophylaxis after RhD exposure in Rh-negative patients via transfusion. This observation identifies an opportunity to improve transfusion safety.

Continued Positive Job Search Experience for New Pathologists Seeking First Employment During the COVID-19 Pandemic (2020-2022).

CONTEXT.­: As pathologists retire and leave the field, it is critical to accurately capture employment trends for new-in-practice pathologists. There is always interest in the job market for newly graduated pathology trainees and prospective pathology trainees, but it is unclear how the COVID-19 pandemic may have affected the job search experience. OBJECTIVE.­: To provide an update on trends gleaned from a survey of pathology graduates' job search experiences during the COVID-19 pandemic. DESIGN.­: We analyzed data from an annual job search survey sent by the College of American Pathologists Graduate Medical Education Committee between 2020 and 2022 to College of American Pathologists junior members and fellows in practice 3 years or less actively looking for a nonfellowship position. Various indicators of the job search experience were compared year to year and with the data previously published 2017 to 2019 and 2012 to 2016. RESULTS.­: Analysis revealed continued positive trends between the 2020 to 2022 data and the data from 2017 to 2019 and 2012 to 2016. This includes continued ease in finding positions, continued availability of jobs in the subspecialty of choice, continued satisfaction with the positions accepted, and, notably, higher starting salaries. CONCLUSIONS.­: Despite the many challenges of the COVID-19 pandemic, job market trends for newly graduated pathology trainees continue to be favorable with respect to multiple indicators compared with 2 prior periods, 2017 to 2019 and 2012 to 2016.

Leadership perspectives on osteopathic medical school applicants to pathology residency training.

The number of graduating allopathic (MD) medical students matching into pathology has declined in recent years, while the number of osteopathic (DO) medical students has increased modestly, given the rapid expansion of osteopathic medical schools. Nonscholarly publications and materials on the internet often perpetuate negative perceptions of osteopathic physicians. Anecdotally, perspectives exist that some pathology residency programs are not DO-friendly; however, the reasons and how widespread an effect this might be are unclear. Our survey queried pathology chairs and residency program directors about their perceptions of osteopathic applicants and their knowledge of osteopathic medical school/training in general. This study utilized two similar, parallel surveys of pathology chairs and residency program directors with general questions structured around the perceptions and knowledge of both allopathic and osteopathic physicians, their medical training, and the consideration of osteopathic applicants to pathology residency. Pathology residency leaders acknowledge some negative perceptions of osteopathic physicians in the medical profession, the news, and social media. They also have some knowledge and perception gaps regarding osteopathic training and applicants, although experience with training osteopathic physicians as residents has been equivalent to that with allopathic physicians, and consideration appears to be fairly equal for osteopathic applicants. Even though negative perceptions of osteopathic physicians persist in news and social media, our surveys demonstrate that the leadership of pathology residency programs does not hold the same degree of bias and that DOs perform well in allopathic pathology residency programs without evidence of inferior outcomes.

The phenotype of pathology residency program directors.

Pathology residency programs vary greatly across the United States. To the authors' knowledge, little is formally known about the "phenotype" or career pathways of pathology residency program directors (PDs). PDs, former PDs (FPDs), and associate PDs (APDs) were surveyed, aiming to address whether or not dominant phenotypes or pathways to graduate medical education leadership exist. Several trends emerged including: 76% Whites, 70% females, 15% MD/PhDs, and more junior faculty (33% being <5 years in practice, another 24% being in practice <10 years, and 41% assistant professors at time of first PD/APD appointment). Anatomic and clinical pathology-certified individuals represented 79%. Sixty-two percent of respondents were on a nontenure employment track, with only 18% indicating tenure track. For subspecialty focus, cytopathology (25%), transfusion medicine (16%), and hematopathology (14%) represented the most common subspecialties practiced. A majority (65%) had served as a chief resident during residency, and most (61%) of PDs had served as APDs first. Most (60%) had not served as fellowship director. Most (65%) had not participated in any education leadership training, with 27% having participated in certificate programs or other educational professional development. Thematic analysis of perceived key criterion in selection for the role was passion for education, demeanor, emotional intelligence, and willingness to serve the department. This information may influence training or experience pursued by individuals aspiring to pathology graduate medical education leadership, inform chairs on qualities to look for, and supplement future educational sessions of the Association of Pathology Chairs Program Directors Council.

Experiential exposure as the key to recruiting medical students into pathology.

Medical student interest and pursuit of a career in pathology have been steadily declining since 2015. We conducted three separate surveys of medical students to better understand these trends. In our first survey, we focused on assessing U.S. allopathic medical students understanding and perceptions of pathology. We later surveyed U.S. osteopathic medical students as a companion to the allopathic medical student survey, in which many similarities were discovered with some key differences. In our final survey, we specifically looked at curriculum differences between the U.S. allopathic medical schools that graduate the most students who enter pathology training programs (Group 1) versus those schools that graduate the fewest future pathologists (Group 2) to determine if the curriculum had an impact on medical student matriculation into pathology. Together, through these surveys, we were able to identify several remarkable recurring trends, presenting areas of targetable action. Here, we summarize themes from the three studies as well as a review of pertinent literature to offer best practices for exposing and engaging medical students to pathology and possibly recruiting students to consider pathology as a career.

How influential are medical school curriculum and other medical school characteristics in students' selecting pathology as a specialty?

There has been a significant decline in the number of United States allopathic medical students matching to pathology residency programs. Data acquired from the American Association of Medical Colleges (AAMC) show sustained variation in the medical school production of students who go on to pathology residency. When divided into groups based on the medical school's historical volume of graduates entering pathology, the schools in groups labeled Group 1 and Group 2 produced significantly higher and lower proportions of pathology residents, respectively. This study aimed to identify what medical school curriculum elements and other medical school characteristics might explain the differences observed in the AAMC data. The Dean or another undergraduate medical education contact from the Group 1 and Group 2 schools was invited to participate in an interview. Pathology Program Directors and Pathology Department Chairs were also included in communications. Thirty interviews were completed with equal numbers from each group. Interview questions probed pathology experiences, existence, and structure of a pathology interest group, options for post-sophomore fellowships, recent curriculum changes, and the extent of mentoring programs. Surprisingly, the curriculum does not appear to be a predictor of a medical school's production of students who enter pathology residency. A significantly greater percentage of Group 1 schools are public institutions compared to Group 2 schools. Other factors that may increase the number of students who go into pathology include mentoring, active learning versus observation, and post-sophomore fellowships or other opportunities to work in the capacity of a new pathology resident.

The phenotype of academic pathology chairs.

Academic pathology departments across the United States vary greatly in terms of size, clinical workloads and research activity. It is therefore not surprising that their chairs may be an equally diverse group. However, to our knowledge, little is formally known about the "phenotype" (academic credentials, leadership background, and subspecialty focus) or career pathways of these individuals. Using a survey tool, this study sought to determine whether or not dominant phenotypes or trends. Several predominant findings emerged including: race (80% Whites), gender (68% males), dual degrees (41% MD/PhDs), years in practice (56% being in practice >15 years at time of first chair appointment), rank upon appointment (88% holding the rank of professor), and funded research (67% holding research funding). While Anatomic and Clinical Pathology (AP/CP) certified chairs represented 46% of the cohort, 30% were AP-only and another 10% were Anatomic Pathology and Neuropathology (AP/NP) certified. For subspecialty focus, neuropathology (13%) and molecular pathology (15%) were disproportionately represented compared to the general population of pathologists. Previous leadership roles on the path to chairmanship included vice chair (41%), division chief (39%), residency program director (29%), or fellowship director (27%). Many (41%) had not participated in any formal business or leadership training. This information may influence training or experience pursued by individuals aspiring to academic pathology leadership. It also highlights the challenges of suboptimal diversity in race and gender, as well as the professional backgrounds of academic pathology chairs and may suggest consideration of alternate pathways to leadership.

A case of mistaken MELD (model for end stage liver disease) score-How an acute hemolytic transfusion reaction falsely altered a patient's transplant status.

BACKGROUND: An acute hemolytic transfusion reaction (AHTR) caused by intravascular hemolysis features a decrease in hemoglobin/hematocrit, reduced haptoglobin, and increases in creatinine, and bilirubin. Acute intravascular hemolysis carries its own morbidity and mortality, especially in the setting of a patient liver disease related pre-existing alterations in hemostasis. Additionally, AHTR significantly impacts the laboratory values used in calculating the Model for End Stage Liver Disease (MELD) score and thus liver transplant status. CASE REPORT: Herein, we present a case of a patient with hepatorenal syndrome due to ESLD on the transplant list who developed an AHTR due to an evolving anti-Jka that initially presented as non-specific reactivity in solid phase adherence testing. This evolving antibody caused intravascular hemolysis and a significant increase in bilirubin from 4.7 to 17.1 mg/dl, thus, raising the MELD score, increasing the predicted short-term mortality risk, and affecting the patient's transplant status. RESULTS: Acute hemolysis caused significant elevation of bilirubin raising the MELD score which increased both the predicted mortality to 70 percent and the perceived urgency of transplant. The MELD score improved after resolution of the AHTR and clearing of the offending Jka-positive RBCs. CONCLUSION: This case highlights the effect of AHTR on parameters used in the determination of MELD score which significantly increases the perceived short-term mortality and urgency of liver transplant. Therefore, any nonspecific reactivity in initial workup could be due to developing antibodies, and put the patient at higher risk for an acute hemolytic transfusion reaction.

Factors influencing US osteopathic medical students to choose pathology as a specialty.

The decline in the number of US allopathic (Medical Doctor or M.D.) medical students matching to pathology residency has been a topic of much discussion at national pathology professional society meetings and in recent publications. A recent survey of fourth-year allopathic medicals students was conducted to better understand the rationale behind students' interest or lack thereof in pathology as a specialty. This study utilizes a similar survey tool gauging osteopathic (Doctor of Osteopathy or D.O.) student knowledge and interest in pathology, and offers insight into a possible growth market for the specialty. Similar to allopathic students, osteopathic students noted that clinical or research opportunities in pathology during medical school, autopsy observation/participation, and participation in pathology interest groups correlated with a greater likelihood of selecting pathology as a specialty. However, some key differences in osteopathic medical school curricular elements including microscope use, gross pathology specimen demonstrations, case-based learning by pathologists, exposure to pathology during other rotations, awareness of a pathology interest group, as well as an overall understanding of the everyday work of a pathologist were noted. Experiential exposure to pathology, and direct mentorship from pathologists may present an opportunity for pathology professional organizations, and pathology residency programs to partner with osteopathic medical schools to increase interest in the field, and aid in pipeline development.

Moderated Mediation of the eCHECKUP TO GO College Student Cannabis Use Intervention.

Background: Cannabis use rates are rising among college students, creating a need for effective and accessible intervention options. One such intervention, the Marijuana eCHECKUP TO GO (eCTG) program, has relatively few studies investigating mechanisms of change and related outcomes. This intervention provides users with personalized normative feedback to adjust user's normative perceptions and use patterns. The current study tested moderated mediation of program effects between the eCTG intervention condition and a healthy stress management (HSM) control condition in a college student sample of near-daily cannabis users. Protective behavioral strategies (PBS) were measured among the eCTG conditionMethods: Data were analyzed from a sample of 227 students who were randomly assigned to the eCTG intervention condition or HSM control condition. Change in cannabis use frequency was measured by re-administering the baseline survey at a six-week follow-up. Multi-group moderated mediation path analysis tested the effects of the eCTG intervention on change in cannabis use frequency through PBS, descriptive norms, and injunctive norms, with multi-group categories defined by sex.Results: Direct effects indicated the intervention predicted reduced descriptive norm perceptions and cannabis use frequency. An indirect effect was found for the intervention condition on reducing cannabis use frequency through change in descriptive norms in males. Similarly, an indirect effect was seen for intervention condition on reducing cannabis use frequency through change in injunctive norms for females.Conclusions: Findings suggest changes in descriptive norms played a sex-specific mediating role in the mechanisms of change for the eCTG intervention on reductions in cannabis use frequency.

Mechanisms of change in an adapted marijuana e-CHECKUP TO GO intervention on decreased college student cannabis use.

The objective of this study was to test indirect effects of the Marijuana e-CHECKUP TO GO program on college students' frequent marijuana use through decreased use in specific social and academic activities. This study randomly assigned college students who reported frequent marijuana use (i.e., approximately five times per week) in fall 2016 to receive Marijuana e-CHECKUP TO GO or healthy stress management (HSM) strategies. The final baseline sample included 298 participants. Path analyses tested direct program effects on marijuana use at six-week posttest, as well as the indirect effect via use within four activities frequently participated in by college students: socializing, being physically active, studying, and being in class. Direct Marijuana e-CHECKUP TO GO effects on reductions in frequent use were transmitted by decreased marijuana use while studying and no use while socializing, being physically active, or in class. Marijuana e-CHECKUP TO GO may be most effective at reducing use of marijuana among college students while studying.

Evaluation of changes in drug susceptibility and population genetic structure in Haemonchus contortus following worm replacement as a means to reverse the impact of multiple-anthelmintic resistance on a sheep farm.

A population of Haemonchus contortus that was highly resistant to benzimidazoles and avermectin/milbemycins with a subpopulation that was resistant to levamisole, was replaced with a susceptible laboratory isolate of H. contortus in a flock of sheep. The anthelmintic susceptibility and population genetics of the newly established population were evaluated for 3.5 years using in vivo, in vitro, and molecular methods. Successful replacement of the resistant population with a susceptible population was confirmed using phenotypic and genotypic measurements; larval development assay indicated full anthelmintic susceptibility; albendazole treatment yielded 98.7% fecal egg count reduction; pyrosequence genotyping of single nucleotide polymorphisms in positions 167 and 200 of the isotype-1 beta tubulin gene were present at 0.0 and 1.7%, respectively; microsatellite genotyping indicated the background haplotype was similar to the susceptible isolate; and haplotypes of the isotype-1 beta tubulin gene were similar to the susceptible isolate. To sustain the susceptibility of the new population, targeted selective treatment was implemented using albendazole. Surprisingly, within 1.5 years post-replacement, the population reverted to a resistant phenotype. Resistance to albendazole, ivermectin, and moxidectin was confirmed via fecal egg count reduction test, larval development assay, and pyrosequencing-based genotyping. Targeted selective treatment was then carried out using levamisole. However, within one year, resistance was detected to levamisole. Population genetics demonstrated a gradual change in the genetic structure of the population until the final population was similar to the initial resistant population. Genetic analyses showed a lack of diversity in the susceptible isolate, suggesting the susceptible isolate had reduced environmental fitness compared to the resistant population, providing a possible explanation for the rapid reversion to resistance. This work demonstrates the power of combining molecular, in vitro, and in vivo assays to study phenotypic and genotypic changes in a field population of nematodes, enabling improved insights into the epidemiology of anthelmintic resistance.

Positive Job Search Experience for New Pathologists Seeking First Employment Between 2017 and 2019.

CONTEXT.­: An aging population calls for an adequate response in the workforce of medical professionals. The field of pathology has seen a downward trend in numbers of graduating US allopathic medical students choosing the specialty. Concerns about the job market after residency and fellowship graduation may be a contributing factor. OBJECTIVE.­: To provide an update on the trends emerging from a survey of pathology graduates' job search experience for their first nonfellowship position. DESIGN.­: Data from an annual job search survey sent by the College of American Pathologists Graduate Medical Education Committee between 2017 and 2019 to College of American Pathologists junior members and fellows in practice 3 years or less actively looking for a nonfellowship position was analyzed. Various indicators of the job search experience were compared year to year and with the previously published 2012 to 2016 benchmark data. RESULTS.­: Analysis revealed positive trends between the 2017 to 2019 data and the 2012 to 2016 benchmark data, including participants' perceiving more ease in finding a position, improved availability of jobs in their subspecialty choice, and higher ratings of satisfaction with the position accepted, as well as a greater proportion of respondents finding a position within 6 months of initiating their job search. CONCLUSIONS.­: The job market for pathology residents and fellows looking for their first nonfellowship position has improved with respect to multiple indicators, such as ease of finding a position, length of job search, and satisfaction with the position accepted when comparing 2017 to 2019 data with the 2012 to 2016 benchmark data.

A Systematic Review of Community Engagement Outcomes Research in School-Based Health Interventions.

BACKGROUND: Involving communities in school health has been purported as a practice integral to supporting a Whole School, Whole Community, Whole Child (WSCC) approach. Although community collaboration is often included in school-based health initiatives, there is little research considering methods for increasing community engagement. The purpose of this study was to identify effective school-based health interventions documenting changes in community engagement. METHODS: Academic experts and school stakeholders guided procedures for a systematic review of studies published from 1987-2017 and gray literature (ie, best practice documents; policy documents, etc.) on comprehensive school health interventions including community engagement as a targeted outcome. RESULTS: The search identified 9 studies addressing community as an outcome of school-based health interventions; types of partnership mechanisms and partners' roles were classified. CONCLUSIONS: Although involving communities is a WSCC component and commonly recommended as a strategy fundamental to school health, there is little empirical research examining effective strategies for engaging communities and engagement is often not measured as part of intervention studies. Further measurement and research in engaging communities in school health is warranted.

Factors Influencing US Allopathic Medical Students to Choose Pathology as a Specialty.

The SARS-CoV-2 pandemic has highlighted the crucial role of pathologists in the health care system at a time of significant decline in the number of US medical students matching to pathology residency positions. To understand this decline, a national survey of fourth-year US allopathic medical students was conducted to assess experiences, knowledge, and attitudes of pathology and factors that impact specialty choice. Participating in a separate pathology course did not increase the probability of choosing pathology. Experiences significantly associated with choosing pathology included clinical or research opportunities in pathology during the last 2 years of medical school, autopsy observation/participation, and participation in pathology interest groups. Many respondents felt they were not sufficiently exposed to pathology to consider it as a specialty. Those who considered pathology but did not choose it were less likely to report understanding the activities of pathologists and being recruited by pathology faculty and more likely to express a preference for more direct patient contact as compared to those entering pathology. In general, respondents agreed that pathology has a good work-life balance and a satisfying degree of intellectual challenge. On the other hand, respondents generally agreed that information on social media and perception of the pathology job market do not seem to be positive and few agreed that pathology is a highly regarded specialty. We identify steps to address these issues and increase the number of US medical students choosing pathology as a specialty crucial to the future of medicine and public health.