Maternal COVID vaccination and breastfeeding during a pandemic: Habitus and health behavior decision making.

OBJECTIVE: To examine the influence of habitus on women's health behavior regarding breastfeeding and subsequent COVID-19 vaccination. DESIGN: A qualitative descriptive design, guided by Pierre Bourdieu's concept of habitus. SAMPLE: Eighteen women who were postpartum, breastfeeding, and vaccinated against COVID- 19 either during pregnancy or while breastfeeding postpartum. MEASURES: Individual semi-structured interviews. RESULTS: Two major themes shaped participants' habitus: health-focused knowledge, and attitudes and beliefs. Attitudes and beliefs included five subthemes: (1) exposure/acceptance/expectations from family, (2) community acceptance of breastfeeding and COVID-19 vaccination, (3) socioeconomic status, (4) easily accessed support, and (5) outside experiences and exposure. DISCUSSION: An individual's habitus impacts one's knowledge, attitudes, and beliefs and interacts with past behaviors when discussing options for infant feeding and health promoting behaviors such as vaccinations. A better understanding of how health care providers assess and utilize habitus in clinical management is needed.

Mixed Nuts as Healthy Snacks: Effect on Tryptophan Metabolism and Cardiovascular Risk Factors.

We recently demonstrated that the consumption of mixed tree nuts (MTNs) during caloric restriction decreased cardiovascular risk factors and increased satiety. Tryptophan (Trp) metabolism has been indicated as a factor in cardiovascular disease. Here, we investigated the effect of MTNs on Trp metabolism and the link to cardiovascular risk markers. Plasma and stool were collected from 95 overweight individuals who consumed either MTNs (or pretzels) daily as part of a hypocaloric weight loss diet for 12 weeks followed by an isocaloric weight maintenance program for an additional 12 weeks. Plasma and fecal samples were evaluated for Trp metabolites by LC-MS and for gut microbiota by 16S rRNA sequencing. Trp-kynurenine metabolism was reduced only in the MTNs group during weight loss (baseline vs. week 12). Changes in Trp-serotonin (week 24) and Trp-indole (week 12) metabolism from baseline were increased in the MTNs group compared to the pretzel group. Intergroup analysis between MTN and pretzel groups does not identify significant microbial changes as indicated by alpha diversity and beta diversity. Changes in the relative abundance of genus Paludicola during intervention are statistically different between the MTNs and pretzel group with p < 0.001 (q = 0.07). Our findings suggest that consumption of MTNs affects Trp host and microbial metabolism in overweight and obese subjects.

Complications in Olecranon Fracture Surgery: A Comparison of Tension Band Vs. Plate Osteosynthesis.

Background: The purpose of this study is to compare the incidence of complications associated with tension band wiring (TBW) versus plate osteosynthesis (POS) in the treatment of olecranon fractures. Methods: We performed a retrospective cohort study of operatively treated adult olecranon fractures from an integrated healthcare system by multiple surgeons from January 2008 to December 2011. Patients were divided into two cohorts: fractures fixed using the tension band technique and fractures fixed using plate osteosynthesis. The study was limited to the Orthopedic Trauma Association classification of olecranon fracture type 21-B1, with subtypes 1-3. Outcome measures were loss of fracture fixation requiring revision, postoperative infection, stiffness requiring surgery, and symptomatic hardware removal (HWR). Univariate and multivariable logistic regressions were performed to test the associations between the type of internal fixation and outcomes. Results: A total of 321 olecranon fractures were included (median age: 61 years old, 57 % female); 153 participants were treated with TBW, and 168 patients with POS. There was one failure in the TBW group and two in the POS group (P=0.62). There were no significant differences in the infection rates (TBW 5%, POS 9%, P=0.20) and no reoperations for stiffness. The HWR occurred significantly more often in TBW (29%) than in POS (14%) (OR=0.39, P=0.001). The association between POS and decreased HWR remained highly significant (OR=0.40, P=0.003) after adjusting for clinical variables. Conclusion: In this large study comparing POS and TBW for 21-B1 olecranon fractures, no difference in fixation failure, infection, or postoperative stiffness was noted. A significantly greater risk of symptomatic hardware occurred in TBW. These findings may assist surgeons and patients in considering the risks and benefits of TBW and POS as treatment options for displaced olecranon fractures.

A Summary of Maternal Mortality in Missouri: A Historical Perspective (1999-2018).

The rate of maternal mortality in the United States (U.S.) is higher than any other industrialized nation, at 23.8 per 100,000 deliveries from 2000-2014. Although maternal mortality ratios decreased by 44% globally from 1990 to 2015, emerging evidence suggests that maternal mortality in the U.S. has been increasing.2-4 One study quotes 700 maternal deaths every year, with 50,000 "near misses."1 By one metric, Missouri ranks as the 44th-worst state for maternal mortality in the U.S.5.

Recommendations on the post-acute management of the osteoporotic fracture - Patients with "very-high" Re-fracture risk.

Osteoporosis is a systemic skeletal disease where there is low bone mass and deterioration of bone microarchitecture, leading to an increased risk of a fragility fracture. The aim of this clinical guideline from Fragility Fracture Network Hong Kong SAR, is to provide evidence-based recommendations on the post-acute treatment of the osteoporotic fracture patient that presents for clinical care at the Fracture Liaison Service (FLS). It is now well established that the incidence of a second fracture is especially high after the first 2 years of the initial osteoporotic fracture. Therefore, the recent osteoporotic fracture should be categorized as "very-high" re-fracture risk. Due to the significant number of silent vertebral fractures in the elderly population, it is also recommended that vertebral fracture assessment (VFA) should be incorporated into FLS. This would have diagnostic and treatment implications for the osteoporotic fracture patient. The use of a potent anti-osteoporotic agent, and preferably an anabolic followed by an anti-resorptive agent should be considered, as larger improvements in BMD is strongly associated with a reduction in fractures. Managing other risk factors including falls and sarcopenia are imperative during rehabilitation and prevention of another fracture. Although of low incidence, one should remain vigilant of the atypical femoral fracture. The aging population is increasing worldwide, and it is expected that the treatment of osteoporotic fractures will be routine. The recommendations are anticipated to aid in the daily clinical practice for clinicians. The Translational potential of this article: Fragility fractures have become a common encounter in clinical practise in the hospital setting. This article provides recommendations on the post-acute management of fragility fracture patients at the FLS.

Incidence, Outcomes, and Risk Factors for Preincision Cardiac Arrest in Cardiac Surgery Patients.

BACKGROUND: We examined the incidence, postoperative outcomes, and patient-related factors associated with preincision cardiac arrest in patients undergoing cardiac surgery. METHODS: We retrospectively examined adult patients undergoing elective or urgent cardiac surgery at the Cleveland Clinic between 2008 and 2019. The incidence of preincision cardiac arrest, defined as arrest between induction of general anesthesia and surgical incision, was reported. In a secondary analysis, we assessed the association between preincision cardiac arrest and major postoperative outcomes. In a tertiary analysis, we used adjusted linear regression models to explore the association between preincision cardiac arrest and prespecified patient risk factors, including severe left main coronary artery stenosis, left ventricular ejection fraction, moderate/severe right ventricular dysfunction, low-flow low-gradient aortic stenosis, and moderate/severe pulmonary hypertension. RESULTS: Preincision cardiac arrests occurred in 75 of 41,238 (incidence of 0.18%; 95% CI, 0.17-0.26) patients who had elective or urgent cardiac surgery. Successful cardiopulmonary resuscitation with return of spontaneous circulation or bridge to cardiopulmonary bypass occurred in 74 of 75 (98.6%) patients. Patients who experienced preincision cardiac arrest had significantly higher in-hospital mortality than those who did not (11% vs 2%; odds ratio [OR] (95% CI), 4.14 (1.94-8.84); P < .001). They were also more likely to suffer postoperative respiratory failure (46% vs 13%; OR [95% CI], 3.94 [2.40-6.47]; P < .001), requirement for renal replacement therapy (11% vs 2%; OR [95% CI], 3.90 [1.82-8.35]; P < .001), neurologic deficit (7% vs 2%; OR [95% CI], 2.49 (1.00-6.21); P = .05), and longer median hospital stay (15 vs 8 days; hazard ratio (HR) [95% CI], 0.68 [0.55-0.85]; P < .001). Reduced left ventricular ejection fraction (per 5% decrease) (OR [95% CI], 1.13 [1.03-1.22]; P = .006) and moderate/severe pulmonary hypertension (OR [95% CI], 3.40 [1.95-5.90]; P < .001) were identified as independent risk factors for cardiac arrest. CONCLUSIONS: Cardiac arrest after anesthetic induction is rare in cardiac surgical patients in our investigation. Though most patients are rescued, morbidity and mortality remain higher. Reduced left ventricular ejection fraction and moderate/severe pulmonary hypertension are associated with greater risk for preincision cardiac arrest.

Leptin Stimulates Endometriosis Development in Mouse Models.

Endometriosis is a chronic inflammatory condition in women, and obesity leads to an inflammatory condition that is directly involved in the etiology of endometriosis. However, observational studies have shown an inverse correlation between endometriosis and a low body mass index (BMI). Obesity does not protect against endometriosis, and on the contrary, an increased BMI may lead to more severe forms of the disease. To determine the effect of obesity on endometriosis, diet-induced and genetically engineered obese mouse models were integrated with endometriosis mouse models with fluorescence-tagged ectopic lesions. High-fat diet-induced obese mice revealed a significant increase in endometriosis development compared with regular-diet control mice. However, obese recipient mice with leptin deficiency and leptin receptor deficiency showed suppressed endometriosis development compared with control mice. Furthermore, donor uterine tissues with leptin deficiency and leptin receptor deficiency suppressed endometriosis development compared with control donor in control recipient mice. Importantly, we revealed that aberrant high levels of leptin concentration significantly increased endometriosis development compared with vehicle treatment group in control mice with normal body weight. Our results suggest that leptin and its receptor are critical for endometriosis development.

Community Case Study: The Role of Live-Interactive Learning Network in Addressing Community Wide Information Needs Through Show-Me COVID-19 ECHO.

After the COVID-19 pandemic reached Missouri, the Show-Me ECHO (Extension for Community Healthcare Outcomes) project initiated COVID-19 ECHO virtual knowledge-sharing networking sessions. These live-interactive weekly sessions inform participants about up-to-date evidence-based recommendations and guidelines through expert didactic lectures followed by real-life case discussions. We conducted a qualitative analysis of pre-session surveys and questions asked during sessions to learn about information needs of community members during first months of public health emergency. This was a pilot project using qualitative analysis of registration questions regarding anticipated COVID-19 community information needs, and participants' questions asked during sessions collected from March 23 until May 4, 2020. We also analyzed participants' satisfaction surveys collected in December 2020. A total of 761 unique participants attended COVID-19 ECHO during the study period. Survey was completed by 692 respondents. Participants asked 315 questions resulting in 797 identified community information needs. Five thematic categories were recognized: patient care, information seeking, minimizing exposure, financial themes, and general comments. Most attendees rated content quality, logistics, and technical operations as good or excellent on a five-point Likert scale. The COVID-19 ECHO model was responsive to the needs of participants by sharing and discussing up-to-date recommendations and guidelines regarding COVID-19. Sessions were well-attended, and the didactic presenters were invited to deliver same or similar presentations at Boone County Medical Society (BCMS) weekly seminars, suggesting the value of the project to healthcare providers and other community members caring for or working with the most vulnerable populations.

An Integrated Pharmacological, Structural, and Genetic Analysis of Extracellular Versus Intracellular ROS Production in Neutrophils.

The neutrophil NADPH oxidase produces both intracellular and extracellular reactive oxygen species (ROS). Although oxidase activity is essential for microbial killing, and ROS can act as signaling molecules in the inflammatory process, excessive extracellular ROS directly contributes to inflammatory tissue damage, as well as to cancer progression and immune dysregulation in the tumor microenvironment. How specific signaling pathways contribute to ROS localization is unclear. Here we used a systems pharmacology approach to identify the specific Class I PI3-K isoform p110ß, and PLD1, but not PLD2, as critical regulators of extracellular, but not intracellular ROS production in primary neutrophils. Combined crystallographic and molecular dynamics analysis of the PX domain of the oxidase component p47phox, which binds the lipid products of PI 3-K and PLD, was used to clarify the membrane-binding mechanism and guide the design of mutant mice whose p47phox is unable to bind 3-phosphorylated inositol phospholipids. Neutrophils from these K43A mutant animals were specifically deficient in extracellular, but not intracellular, ROS production, and showed increased dependency on signaling through the remaining PLD1 arm. These findings identify the PX domain of p47phox as a critical integrator of PLD1 and p110ß signaling for extracellular ROS production, and as a potential therapeutic target for modulating tissue damage and extracellular signaling during inflammation.

Sources of Vaccine Hesitancy: Pregnancy, Infertility, Minority Concerns, and General Skepticism.

The coronavirus disease 2019 (COVID-19) epidemic continues to evolve, with variants of concern and new surges of COVID-19 noted over the past months. The limited data and evolving recommendations regarding COVID-19 vaccination in pregnancy have led to some understandable hesitancy among pregnant individuals. On social media, misinformation and unfounded claims linking COVID-19 vaccines to infertility are widespread, leading to vaccine skepticism among many men and women of reproductive age. The disproportionate impact of COVID-19 on communities of color, coupled with the unfortunate and troubled history of abuses of African Americans by the biomedical research community in the US, has also led to hesitancy and skepticism about the COVID-19 vaccines among some of our most vulnerable. The complex nature of vaccine hesitancy is evidenced by further divides between different demographic, political, age, geographical, and socioeconomic groups. Better understanding of these concerns is important in the individualized approaches to each patient.

Coronavirus Disease 2019 (COVID-19) Disease Severity: Pregnant vs Nonpregnant Women at 82 Facilities.

BACKGROUND: Pregnancy has been reported to be a risk factor for severe COVID-19. We evaluated the impact of pregnancy on severe COVID-19 and mortality in an electronic medical record (EMR) database that enabled exclusion of labor and delivery (L&D) encounters. METHODS: In this retrospective cohort study, EMRs from 82 healthcare facilities in the Cerner COVID-19 Datamart were analyzed. The study comprised 38 106 individuals aged 18-45 years old with COVID-19 who had emergency department, urgent care, or inpatient encounters from December 2019 to September 2020. Subgroups were balanced through propensity score weights for age, race, smoking status, and number of comorbidities. The primary outcome was COVID-19-related mortality; secondary outcomes were markers of severe COVID-19: intubations, mechanical ventilation, use of vasopressors, diagnosis of sepsis, and diagnosis of acute respiratory distress syndrome. RESULTS: In comparing pregnant and nonpregnant women, no statistical differences were found for markers of severe COVID-19, after adjusting for age, smoking, race, and comorbidities. The adjusted odds of an inpatient encounter were higher for pregnant vs nonpregnant women (adjusted odds ratio [aOR], 13.2; 95% confidence interval [CI], 11.6-15.3; P < .001), but notably lower after excluding L&D encounters (aOR, 2.3; 95% CI, 1.89-2.88; P < .001). In comparison to women without L&D encounters, hospitalization was significantly more likely for men. CONCLUSIONS: We did not find an increased risk of severe COVID-19 or mortality in pregnancy. Hospitalization does not necessarily indicate severe COVID-19 in pregnancy, as half of pregnant patients with COVID-19 were admitted for L&D encounters in this study.

Intrauterine Fetal Demise in the Third Trimester of Pregnancy Associated With Mild Infection With the SARS-CoV-2 Delta Variant Without Protection From Vaccination.

BACKGROUND: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has a higher infection rate in pregnant women than age-matched adults. With increased infectivity and transmissibility, the Delta variant is predominant worldwide. METHODS: In this study, we describe intrauterine fetal demise in unvaccinated women with mild symptoms of SARS-CoV-2 Delta variant infection. RESULTS: Histology and elevated proinflammatory responses of the placenta suggest that fetal demise was associated with placental malperfusion due to Delta variant infection. CONCLUSIONS: This study suggests that the Delta variant can cause severe morbidity and mortality to fetuses. Vaccination should continue to be advocated and will likely continue to reduce SARS-CoV-2 infection risks for pregnant women and their fetuses.

Short-course IL-15 given as a continuous infusion led to a massive expansion of effective NK cells: implications for combination therapy with antitumor antibodies.

BACKGROUND: Full application of cytokines as oncoimmunotherapeutics requires identification of optimal regimens. Our initial effort with intravenous bolus recombinant human interleukin-15 (rhIL-15) was limited by postinfusional reactions. Subcutaneous injection and continuous intravenous infusion for 10 days (CIV-10) provided rhIL-15 with less toxicity with CIV-10 giving the best increases in CD8+ lymphocytes and natural killer (NK) cells. To ease rhIL-15 administration, we shortened time of infusion. Treatment with rhIL-15 at a dose of 3-5 µg/kg as a 5-day continuous intravenous infusion (CIV-5) had no dose-limiting toxicities while effector cell stimulation was comparable to the CIV-10 regimen. METHODS: Eleven patients with metastatic cancers were treated with rhIL-15 CIV-5, 3 µg (n=4), 4 µg (n=3), and 5 µg/kg/day (n=4) in a phase I dose-escalation study (April 6, 2012). RESULTS: Impressive expansions of NK cells were seen at all dose levels (mean 34-fold), including CD56bright NK cells (mean 144-fold for 4 µg/kg), as well as an increase in CD8+ T cells (mean 3.38-fold). At 5 µg/kg/day, there were no dose-limiting toxicities but pulmonary capillary leak and slower patient recovery. This led to our choice of the 4 µg/kg as CIV-5 dose for further testing. Cytolytic capacity of CD56bright and CD56dim NK cells was increased by interleukin-15 assayed by antibody-dependent cellular cytotoxicity (ADCC), natural cytotoxicity and natural killer group 2D-mediated cytotoxicity. The best response was stable disease. CONCLUSIONS: IL-15 administered as CIV-5 substantially expanded NK cells with increased cytotoxic functions. Tumor-targeting monoclonal antibodies dependent on ADCC as their mechanism of action including alemtuzumab, obinutuzumab, avelumab, and mogamulizumab could benefit from those NK cell expansions and provide a promising therapeutic strategy. TRIAL REGISTRATION NUMBERS: NCT01572493, NCT03759184, NCT03905135, NCT04185220 and NCT02689453.

Lessons from Contact Tracing in Mid-Missouri.

The public health community has used contact tracing to address pandemics since the eighteenth century. With the emergence of COVID-19, these classical skills are the primary defense for communities to limit morbidity and mortality during the pandemic. Here we describe the methods, strengths, and challenges of contact tracing.

Pediatric Safety Restraint Use in Motor Vehicle Crashes at a Level I Safety-Net Trauma Center.

BACKGROUND: Adherence to child passenger safety recommendations is essential to prevent death and injury in children involved in motor vehicle crashes. Parents may not undertake the proper safety measures, which can lead to increase injury. METHODS: A safety net, level I trauma center's database was used to identify admitted children (age<15 y/o) involved in motor vehicle crashes over a 2-y period to investigate safety restraint device use and compliance with state recommendations. Variables evaluated were crash characteristics, presence and method of passenger restraint, demographics, Glasgow Coma Scale, and Injury Severity Score. Excluded were patients where restraint characteristics could not be identified and those discharged from the trauma center. RESULTS: Eighty patients met inclusion criteria. Thirty-two (40%) children were unrestrained. Safety restraint device was noted in 48 (60%) children with 13 (27.1%) patients improperly restrained. The most common method of improper restraint (6, 46.2%) was traveling in the front seat before the age state law recommends. With respect to proper, improper, and no restraint, age (7.31 ± 14.26, 5.76 ± 3.24, P = 0.36), female sex (17, 8, 13, P = 0.32), low-income status (14, 5, 24, P = 0.28), and race (P = 0.08) did not differ between the groups. The unrestrained children had statistically lower initial Glasgow Coma Scale and higher Injury Severity Score and were more often involved in high-risk mechanism of Injury motor vehicle crashes. CONCLUSIONS: Despite recommendations and regulations regarding child passenger safety measures, there are a significant number of children that remain suboptimally restrained who are admitted to a safety-net trauma center. Further research is needed to understand the barriers to increase the compliance with recommendations along with targeted educational campaigns in low-compliance populations.

Mechanisms by Which SARS-CoV-2 May Impact Male Fertility.

The COVID-19 pandemic is unlike anything we have experienced in over a century. In the USA, waves of COVID-19 have migrated from the Northeast to the Sun Belt to the Midwest over the past year. Compared with females, males are more susceptible to SARS-CoV-2 infection, have more severe COVID-19 disease, and have higher death rates. In many countries, men are consistently more likely to die by a factor of almost 2. This article describes some of the mechanisms by which COVID-19 may be associated with male infertility, as discussed by Dutta and Sengupta.