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1.
Res Sq ; 2024 Jun 14.
Article in English | MEDLINE | ID: mdl-38946950

ABSTRACT

Background: The research community has historically failed to enroll diverse groups of participants in dementia clinical trials. A unique aspect of dementia care research is the requirement of a study partner, who can attest to the care recipient's clinical and functional capacity. The aim of this study is to assess racial and ethnic differences and the importance of various trial considerations among dementia caregivers, in their decision to participate in clinical research as study partners. Method: We embedded a vignette about a hypothetical dementia clinical trial in a nationally representative survey of U.S. dementia caregivers, oversampling non-Hispanic Black and Hispanic caregivers. Dementia caregivers were asked about their willingness to participate in the trial with their care recipient and rated the importance of nine considerations in hypothetical decisions to participate. Caregiver demographic characteristics were analyzed as predictors of trial participation in a base demographic model. In a second reasons model caregiver demographic characteristics and the rated importance of the nine considerations were separately analyzed as predictors; both models used survey-weighted logistic regression. Result: The sample consisted of 610 dementia caregivers, including 156 non-Hispanic Black and 122 Hispanic caregiver participants. In the base demographic model, hypothetical trial participation was negatively associated with older caregiver age (OR (odds ratio) = 0.72, p = < 0.001). In the reasons model, the rated importance of a social responsibility to help others by participating in research was significantly associated with participation (OR = 1.56, p = 0.049), while the importance of the possibility of the care recipient experiencing serious side effects was negatively associated with participation (OR = 0.51, p = 0.003). In both models there was no significant difference in hypothetical participation between non-Hispanic Black and non-Hispanic White caregivers, or between Hispanic and non-Hispanic White caregivers. Conclusion: Hispanic and non-Hispanic Black dementia caregivers were not less likely than non-Hispanic White dementia caregivers to participate in a hypothetical dementia clinical trial. Our study suggests that failures to recruit diverse populations in dementia clinical research are not attributable to less willingness among members of underrepresented groups but may instead reflect structural barriers and historic exclusion from trial participation.

3.
J Innate Immun ; 16(1): 283-294, 2024.
Article in English | MEDLINE | ID: mdl-38744252

ABSTRACT

INTRODUCTION: The ribonuclease (RNase) A superfamily encodes cationic antimicrobial proteins with potent microbicidal activity toward uropathogenic bacteria. Ribonuclease 6 (RNase6) is an evolutionarily conserved, leukocyte-derived antimicrobial peptide with potent microbicidal activity toward uropathogenic Escherichia coli (UPEC), the most common cause of bacterial urinary tract infections (UTIs). In this study, we generated Rnase6-deficient mice to investigate the hypothesis that endogenous RNase 6 limits host susceptibility to UTI. METHODS: We generated a Rnase6EGFP knock-in allele to identify cellular sources of Rnase6 and determine the consequences of homozygous Rnase6 deletion on antimicrobial activity and UTI susceptibility. RESULTS: We identified monocytes and macrophages as the primary cellular sources of Rnase6 in bladders and kidneys of Rnase6EGFP/+ mice. Rnase6 deficiency (i.e., Rnase6EGFP/EGFP) resulted in increased upper urinary tract UPEC burden during experimental UTI, compared to Rnase6+/+ controls. UPEC displayed increased intracellular survival in Rnase6-deficient macrophages. CONCLUSION: Our findings establish that RNase6 prevents pyelonephritis by promoting intracellular UPEC killing in monocytes and macrophages and reinforce the overarching contributions of endogenous antimicrobial RNase A proteins to host UTI defense.


Subject(s)
Escherichia coli Infections , Macrophages , Mice, Knockout , Ribonucleases , Urinary Tract Infections , Uropathogenic Escherichia coli , Animals , Urinary Tract Infections/immunology , Urinary Tract Infections/microbiology , Mice , Uropathogenic Escherichia coli/immunology , Macrophages/immunology , Macrophages/microbiology , Escherichia coli Infections/immunology , Ribonucleases/metabolism , Ribonucleases/genetics , Mice, Inbred C57BL , Humans , Monocytes/immunology , Disease Models, Animal , Female , Cells, Cultured
4.
Am J Physiol Renal Physiol ; 326(6): F1078-F1090, 2024 Jun 01.
Article in English | MEDLINE | ID: mdl-38634130

ABSTRACT

Urothelium forms a distensible yet impermeable barrier, senses and transduces stimuli, and defends the urinary tract from mechanical, chemical, and bacterial injuries. Biochemical and genetic labeling studies support the existence of one or more progenitor populations with the capacity to rapidly regenerate the urothelium following injury, but slow turnover, a low mitotic index, and inconsistent methodologies obscure progenitor identity. The progenitor properties of basal keratin 5 urothelial cells (K5-UCs) have been previously investigated, but those studies focused on embryonic or adult bladder urothelium. Urothelium undergoes desquamation and apoptosis after birth, which requires postnatal proliferation and restoration. Therefore, we mapped the fate of bladder K5-UCs across postnatal development/maturation and following administration of cyclophosphamide to measure homeostatic and reparative progenitor capacities, respectively. In vivo studies demonstrate that basal K5-UCs are age-restricted progenitors in neonates and juveniles, but not in adult mice. Neonatal K5-UCs retain a superior progenitor capacity in vitro, forming larger and more differentiated urothelial organoids than adult K5-UCs. Accordingly, K5-UC transcriptomes are temporally distinct, with enrichment of transcripts associated with cell proliferation and differentiation in neonates. Induction of urothelial proliferation is sufficient to restore adult K5-UC progenitor capacity. Our findings advance the understanding of urothelial progenitors and support a linear model of urothelial formation and regeneration, which may have significant impact on therapeutic development or tissue engineering strategies.NEW & NOTEWORTHY Fate mapping reveals an important linear relationship, whereby bladder basal urothelial cells give rise to intermediate and superficial cells in an age-restricted manner and contribute to tissue repair. Neonatal basal cells reprise their role as superior progenitors in vitro and display distinct transcriptional signatures, which suggest progenitor function is at least partially cell intrinsic. However, the urothelium progenitor niche cannot be overlooked, since FGF7 rescues adult basal cell progenitor function.


Subject(s)
Cell Proliferation , Keratin-5 , Regeneration , Stem Cells , Urinary Bladder , Urothelium , Animals , Mice , Age Factors , Animals, Newborn , Cell Differentiation , Cells, Cultured , Cyclophosphamide , Fibroblast Growth Factor 7/metabolism , Fibroblast Growth Factor 7/genetics , Gene Expression Regulation, Developmental , Keratin-5/metabolism , Keratin-5/genetics , Mice, Inbred C57BL , Stem Cells/metabolism , Transcriptome , Urinary Bladder/metabolism , Urothelium/metabolism
5.
J Alzheimers Dis ; 99(1): 251-262, 2024.
Article in English | MEDLINE | ID: mdl-38669528

ABSTRACT

Background: Whereas clinical experience in dementia indicates high risk for financial mismanagement, there has been little formal study of real world financial errors in dementia. Objective: We aimed to compare caregiver-reported financial mistakes among people with Alzheimer's disease, behavioral variant frontotemporal dementia (bvFTD), and primary progressive aphasia (PPA). Methods: Caregivers reported whether participants with dementia had made financial mistakes within the last year; and if so, categorized these as resulting from: (a) being too trusting or gullible, (b) being wasteful or careless with money, or (c) trouble with memory. In a pre-registered analysis https://archive.org/details/osf-registrations-vupj7-v1), we examined the hypotheses that (1) financial mistakes due to impaired socioemotional function and diminished sensitivity to negative outcomes are more prevalent in bvFTD than in Alzheimer's disease, and (2) financial mistakes due to memory are more prevalent in Alzheimer's disease than in bvFTD. Exploratory analyses addressed vulnerability in PPA and brain-behavior relationships using voxel-based morphometry. Results: Concordant with our first hypothesis, bvFTD was more strongly associated than Alzheimer's disease with mistakes due to being too trusting/gullible or wasteful/careless; contrary to our second hypothesis, both groups were similarly likely to make mistakes due to memory. No differences were found between Alzheimer's disease and PPA. Exploratory analyses indicated associations between financial errors and atrophy in right prefrontal and insular cortex. Conclusions: Our findings cohere with documented socioemotional and valuation impairments in bvFTD, and with research indicating comparable memory impairment between bvFTD and Alzheimer's disease.


Subject(s)
Alzheimer Disease , Aphasia, Primary Progressive , Frontotemporal Dementia , Humans , Alzheimer Disease/economics , Alzheimer Disease/psychology , Aphasia, Primary Progressive/economics , Aphasia, Primary Progressive/psychology , Frontotemporal Dementia/economics , Frontotemporal Dementia/psychology , Female , Male , Aged , Caregivers/psychology , Caregivers/economics , Middle Aged , Neuropsychological Tests , Magnetic Resonance Imaging
6.
Semin Neurol ; 44(2): 168-177, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38485127

ABSTRACT

Underserved and underrepresented populations have historically been excluded from neurological research. This lack of representation has implications for translation of research findings into clinical practice given the impact of social determinants of health on neurological disease risk, progression, and outcomes. Lack of inclusion in research is driven by individual-, investigator-, and study-level barriers as well as larger systemic injustices (e.g., structural racism, discriminatory practices). Although strategies to increase inclusion of underserved and underrepresented populations have been put forth, numerous questions remain about the most effective methodology. In this article, we highlight inclusivity patterns and gaps among the most common neurological conditions and propose best practices informed by our own experiences in engagement of local community organizations and collaboration efforts to increase underserved and underrepresented population participation in neurological research.


Subject(s)
Medically Underserved Area , Vulnerable Populations , Humans
7.
Cell Rep ; 43(4): 114007, 2024 Apr 23.
Article in English | MEDLINE | ID: mdl-38517889

ABSTRACT

Urinary tract infections (UTIs) commonly afflict people with diabetes. To better understand the mechanisms that predispose diabetics to UTIs, we employ diabetic mouse models and altered insulin signaling to show that insulin receptor (IR) shapes UTI defenses. Our findings are validated in human biosamples. We report that diabetic mice have suppressed IR expression and are more susceptible to UTIs caused by uropathogenic Escherichia coli (UPEC). Systemic IR inhibition increases UPEC susceptibility, while IR activation reduces UTIs. Localized IR deletion in bladder urothelium promotes UTI by increasing barrier permeability and suppressing antimicrobial peptides. Mechanistically, IR deletion reduces nuclear factor κB (NF-κB)-dependent programming that co-regulates urothelial tight junction integrity and antimicrobial peptides. Exfoliated urothelial cells or urine samples from diabetic youths show suppressed expression of IR, barrier genes, and antimicrobial peptides. These observations demonstrate that urothelial insulin signaling has a role in UTI prevention and link IR to urothelial barrier maintenance and antimicrobial peptide expression.


Subject(s)
Receptor, Insulin , Signal Transduction , Urinary Bladder , Urinary Tract Infections , Urothelium , Receptor, Insulin/metabolism , Urinary Tract Infections/microbiology , Urinary Tract Infections/metabolism , Urinary Tract Infections/pathology , Animals , Urothelium/metabolism , Urothelium/pathology , Urothelium/microbiology , Humans , Urinary Bladder/microbiology , Urinary Bladder/pathology , Urinary Bladder/metabolism , Mice , Uropathogenic Escherichia coli/pathogenicity , Mice, Inbred C57BL , NF-kappa B/metabolism , Female , Escherichia coli Infections/metabolism , Escherichia coli Infections/microbiology , Insulin/metabolism , Diabetes Mellitus, Experimental/metabolism , Diabetes Mellitus, Experimental/pathology , Male
8.
Mol Metab ; 79: 101849, 2024 Jan.
Article in English | MEDLINE | ID: mdl-38056691

ABSTRACT

OBJECTIVE: Energy-intensive kidney reabsorption processes essential for normal whole-body function are maintained by tubular epithelial cell metabolism. Although tubular metabolism changes markedly following acute kidney injury (AKI), it remains unclear which metabolic alterations are beneficial or detrimental. By analyzing large-scale, publicly available datasets, we observed that AKI consistently leads to downregulation of the mitochondrial pyruvate carrier (MPC). This investigation aimed to understand the contribution of the tubular MPC to kidney function, metabolism, and acute injury severity. METHODS: We generated tubular epithelial cell-specific Mpc1 knockout (MPC TubKO) mice and employed renal function tests, in vivo renal 13C-glucose tracing, mechanistic enzyme activity assays, and tests of injury and survival in an established rhabdomyolysis model of AKI. RESULTS: MPC TubKO mice retained normal kidney function, displayed unchanged markers of kidney injury, but exhibited coordinately increased enzyme activities of the pentose phosphate pathway and the glutathione and thioredoxin oxidant defense systems. Following rhabdomyolysis-induced AKI, compared to WT control mice, MPC TubKO mice showed increased glycolysis, decreased kidney injury and oxidative stress markers, and strikingly increased survival. CONCLUSIONS: Our findings suggest that decreased renal tubular mitochondrial pyruvate uptake hormetically upregulates oxidant defense systems before AKI and is a beneficial adaptive response after rhabdomyolysis-induced AKI. This raises the possibility of therapeutically modulating the MPC to attenuate AKI severity.


Subject(s)
Acute Kidney Injury , Rhabdomyolysis , Mice , Animals , Monocarboxylic Acid Transporters/metabolism , Acute Kidney Injury/metabolism , Oxidation-Reduction , Rhabdomyolysis/chemically induced , Rhabdomyolysis/metabolism , Oxidants/adverse effects
9.
Am J Emerg Med ; 76: 207-210, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38096769

ABSTRACT

PURPOSE: Sexually transmitted infections (STIs) represent an enormous public health burden in the United States. Emergency departments (EDs) are a significant source of medical care, particularly for vulnerable patient populations. Guidelines for the treatment of Chlamydia trachomatis have evolved and now recommend doxycycline 100 mg orally twice daily for 7 days as the primary regimen for adults. However, the single-dose azithromycin regimen can be given during the ED visit, while the new regimen has nonadherence hurdles. The purpose of this study will be determining the rate of ED discharge prescription pick ups of doxycycline for Chlamydia trachomatis infection at two discharge pharmacies. METHODS: This is a retrospective chart review of information contained in the electronic medical record (EMR) from August 1st, 2021 - July 31st, 2022. Adult patients who present to the two EDs in the healthcare system and those who received empiric antibiotic treatment for Chlamydia trachomatis infection prior to, or at, ED discharge will be included. Patients who are pregnant, less than 18 years old, those without a Chlamydia trachomatis nucleic acid amplification test during their ED visit, or patients whose antibiotic treatment prescription was sent to a pharmacy other than the two primary discharge pharmacies at the respective medical centers will be excluded. The primary outcome of this study will be determining the rate of emergency department (ED) discharge prescription pick ups of doxycycline for empiric treatment of Chlamydia trachomatis infection at two discharge pharmacies. The secondary outcomes will include the incidence of repeat positive tests between four weeks and 90 days, risk of repeat positive tests in those who do not fill doxycycline, number of positive and negative test results, rate of prescribing adherence to 2021 Centers for Disease Control and Prevention (CDC) Sexually Transmitted Infections Treatment Guidelines regimens for empiric treatment, and insurance status at the time of discharge fill. RESULTS: Seven hundred and thirty patients were pulled from the EMR. One hundred of the patients were excluded from the study as they did not receive empiric antibiotic treatment for Chlamydia trachomatis infection prior to, or at, ED discharge leaving 630 participants. Among this group, 369 patients were excluded as their discharge prescription was not sent to the discharge pharmacies within the medical system, leaving 261 individuals in the study. Per chart review, 215 of the patients picked up their doxycycline prescription (82.4%) and 46 (17.6%) patients failed to pick up their prescription. Additionally, 43 (16.5) of the patients who were prescribed empiric therapy had a positive chlamydia trachomatis test, while 209 (83.5%) of those had a negative test. This study also showed 188 (72%) patients received treatment according to the current CDC recommendations. CONCLUSION: Majority of patients who received prescriptions from the in-hospital discharge pharmacy picked up their prescriptions.


Subject(s)
Chlamydia Infections , Sexually Transmitted Diseases , Adult , Pregnancy , Female , Humans , Adolescent , Doxycycline/therapeutic use , Patient Discharge , Retrospective Studies , Anti-Bacterial Agents , Chlamydia Infections/drug therapy , Chlamydia Infections/epidemiology , Sexually Transmitted Diseases/drug therapy , Chlamydia trachomatis , Patient Compliance , Prescriptions , Emergency Service, Hospital
10.
J Innate Immun ; 15(1): 865-875, 2023.
Article in English | MEDLINE | ID: mdl-37980892

ABSTRACT

Mounting evidence suggests that antimicrobial peptides and proteins (AMPs) belonging to the RNase A superfamily have a critical role in defending the bladder and kidney from bacterial infection. RNase 6 has been identified as a potent, leukocyte-derived AMP, but its impact on urinary tract infection (UTI) in vivo has not been demonstrated. To test the functional role of human RNase 6, we generated RNASE6 transgenic mice and studied their susceptibility to experimental UTI. In addition, we generated bone marrow-derived macrophages to study the impact of RNase 6 on antimicrobial activity within a cellular context. When subjected to experimental UTI, RNASE6 transgenic mice developed reduced uropathogenic Escherichia coli (UPEC) burden, mucosal injury, and inflammation compared to non-transgenic controls. Monocytes and macrophages were the predominant cellular sources of RNase 6 during UTI, and RNASE6 transgenic macrophages were more proficient at intracellular UPEC killing than non-transgenic controls. Altogether, our findings indicate a protective role for human RNase 6 during experimental UTI.


Subject(s)
Ribonucleases , Urinary Tract Infections , Animals , Humans , Mice , Endoribonucleases/genetics , Kidney , Mice, Transgenic , Ribonucleases/genetics , Urinary Bladder/microbiology
11.
Glob Health Sci Pract ; 11(1)2023 02 28.
Article in English | MEDLINE | ID: mdl-36853632

ABSTRACT

INTRODUCTION: Market size estimations and demand forecasts use a variety of methodological approaches to inform decision-making around new (and lesser-used) contraceptive methods. For contraceptive products already available at scale in a market, historical procurement and consumption data can help to inform these forecasts. However, little published guidance is available on appropriate approaches to estimating contraceptive demand in the absence of historical data. METHODS: This landscape review aimed to describe the variety of approaches for modeling demand for new contraceptive methods, highlight opportunities for alignment around forecasting practices, and make recommendations to support more accurate forecasting and sound decision-making based on forecasts. We used the published scientific and gray literature to inform the development of a semistructured guide for key informant interviews. We conducted interviews with 29 experts representing a spectrum of interests in market size estimation and demand forecasting for new contraceptive methods (e.g., ministries of health, donors, manufacturers, technical assistance providers, and demand forecasting specialists). We coded notes from the interviews using thematic content analysis. RESULTS: The purposes of market size estimation and demand forecasting for new contraceptive methods vary widely, as do associated model inputs and outputs. Key informants revealed a need for more standardized language around market size estimation and demand forecasting and highlighted key recommendations: select models that are fit-for-purpose, clearly articulate assumptions and uncertainty in model outputs, consider a broad range of contraceptive options in a forecast to capture the complete contraceptive supply environment, and perform a reality check of results and refresh assumptions. CONCLUSION: We recommend following a simple decision pathway to ensure that forecasts are fit-for-purpose, with appropriate inputs, outputs, and assumptions clearly articulated. Common pitfalls around overestimating demand should be avoided. Incorporating best practices into forecasting exercises will ensure that models are useful for the stakeholders.


Subject(s)
Contraceptive Agents , Contraceptive Devices , Humans , Contraception , Gray Literature , Povidone
12.
bioRxiv ; 2023 Jan 31.
Article in English | MEDLINE | ID: mdl-36778297

ABSTRACT

Energy-intensive kidney reabsorption processes essential for normal whole-body function are maintained by tubular epithelial cell metabolism. Tubular metabolism changes markedly following acute kidney injury (AKI), but which changes are adaptive versus maladaptive remain poorly understood. In publicly available data sets, we noticed a consistent downregulation of the mitochondrial pyruvate carrier (MPC) after AKI, which we experimentally confirmed. To test the functional consequences of MPC downregulation, we generated novel tubular epithelial cell-specific Mpc1 knockout (MPC TubKO) mice. 13C-glucose tracing, steady-state metabolomic profiling, and enzymatic activity assays revealed that MPC TubKO coordinately increased activities of the pentose phosphate pathway and the glutathione and thioredoxin oxidant defense systems. Following rhabdomyolysis-induced AKI, MPC TubKO decreased markers of kidney injury and oxidative damage and strikingly increased survival. Our findings suggest that decreased mitochondrial pyruvate uptake is a central adaptive response following AKI and raise the possibility of therapeutically modulating the MPC to attenuate AKI severity.

14.
JTO Clin Res Rep ; 4(12): 100601, 2023 Dec.
Article in English | MEDLINE | ID: mdl-38162175

ABSTRACT

Background: Immunotherapy has vastly changed the treatment landscape for patients with advanced NSCLC. With high programmed death-ligand 1 (PD-L1) expression (tumor proportion score ≥50%), options include programmed cell death protein 1 or PD-L1 inhibitor with or without chemotherapy. A cut-point of greater than or equal to 50% defines PD-L1-high, but a more precise PD-L1 tumor proportion score may be an important predictor of outcomes. Methods: We reviewed all patients with PD-L1-high NSCLC who received pembrolizumab from June 2019 to June 2021. Demographic, diagnosis, treatment, and outcomes data were collected retrospectively. The primary end point was a descriptive analysis of pembrolizumab prescribing patterns. Secondary end points included overall survival (OS) by treatment choice and absolute PD-L1 expression. Results: Overall, 132 patients received pembrolizumab; 124 (94%) as monotherapy, and 8 (6%) with chemotherapy. Baseline characteristics include the following: (1) median age 70 years (50-89); (2) 55% men; (3) 79% Eastern Cooperative Oncology Group performance status 0 to 1; and (4) 96% current or former smokers. There were 39% who have PD-L1 greater than or equal to 90% versus 61% with PD-L1 of 50% to 89%. The median OS in the overall population was 14.4 months. The median OS in the pembrolizumab monotherapy cohort and combination cohort were 13.6 months and 16.6 months, respectively (p = 0.67). Within the monotherapy cohort, the median OS was longer for PD-L1 greater than or equal to 90% (19.8 mo) versus PD-L1 50% to 89% (11.9 mo, p = 0.039). The 24-month OS was 27.8% among patients with PD-L1 50% to 89% and 47.4% among patients with PD-L1 greater than or equal to 90%. Conclusions: Most patients with advanced PD-L1-high NSCLC received pembrolizumab monotherapy, among whom OS was strongly correlated with PD-L1 expression, with PD-L1 greater than or equal to 90% of patients experiencing substantially longer survival. PD-L1 expression level could be an important determinant in immunotherapy prescribing patterns and a predictor of success in advanced NSCLC.

15.
Drug Alcohol Depend ; 241: 109698, 2022 Dec 01.
Article in English | MEDLINE | ID: mdl-36403511

ABSTRACT

INTRODUCTION: E-cigarette advertising frequently involves vaping cues-hand to mouth motions and vapor-that physically resemble traditional cigarette smoking cues. There has been concern that these vaping cues could make cigarettes seem more frequently used and acceptable by society. This analysis examined whether exposure to vaping cues in e-cigarette ads influence descriptive and injunctive normative perceptions about cigarettes among young adults who use cigarettes and e-cigarettes (dual use). METHOD: Secondary analysis was conducted on an experiment that randomly exposed young adults living in Boston who dual used in the past-week to either 1) E-cigarette ads with vaping cues; 2) E-cigarette ads that edited out vaping cues; or 3) Beverage ads. Descriptive and injunctive normative perceptions about cigarettes were compared across participants who viewed e-cigarette ads with vaping cues versus those who viewed ads without vaping cues. RESULTS: Those who viewed e-cigarette ads with vaping cues had decreased perceptions that cigarette smoking was common compared to those who viewed e-cigarette ads without vaping cues. Exposure to e-cigarette ads with vaping cues also led to increased perceptions of other peoples' unfavorable views toward cigarette smoking in general and their own cigarette smoking. CONCLUSION: Contrary to renormalization concerns, vaping cues in e-cigarette ads increased anti-smoking normative perceptions among people who dual used in the past week. Further research is needed to examine the impact of vaping cues in e-cigarette ads on normative perceptions among those who don't smoke or quit smoking cigarettes.


Subject(s)
Cigarette Smoking , Electronic Nicotine Delivery Systems , Tobacco Products , Vaping , Young Adult , Humans , Advertising , Nicotiana
16.
J Am Heart Assoc ; 11(20): e025915, 2022 10 18.
Article in English | MEDLINE | ID: mdl-36250670

ABSTRACT

Background Cardiac complications related to COVID-19 in children and adolescents include ventricular dysfunction, myocarditis, coronary artery aneurysm, and bradyarrhythmias, but tachyarrhythmias are less understood. The goal of this study was to evaluate the frequency, characteristics, and outcomes of children and adolescents experiencing tachyarrhythmias while hospitalized for acute severe COVID-19 or multisystem inflammatory syndrome in children. Methods and Results This study involved a case series of 63 patients with tachyarrhythmias reported in a public health surveillance registry of patients aged <21 years hospitalized from March 15, 2020, to December 31, 2021, at 63 US hospitals. Patients with tachyarrhythmias were compared with patients with severe COVID-19-related complications without tachyarrhythmias. Tachyarrhythmias were reported in 22 of 1257 patients (1.8%) with acute COVID-19 and 41 of 2343 (1.7%) patients with multisystem inflammatory syndrome in children. They included supraventricular tachycardia in 28 (44%), accelerated junctional rhythm in 9 (14%), and ventricular tachycardia in 38 (60%); >1 type was reported in 12 (19%). Registry patients with versus without tachyarrhythmia were older (median age, 15.4 [range, 10.4-17.4] versus 10.0 [range, 5.4-14.8] years) and had higher illness severity on hospital admission. Intervention for treatment of tachyarrhythmia was required in 37 (59%) patients and included antiarrhythmic medication (n=31, 49%), electrical cardioversion (n=11, 17%), cardiopulmonary resuscitation (n=8, 13%), and extracorporeal membrane oxygenation (n=9, 14%). Patients with tachyarrhythmias had longer hospital length of stay than those who did not, and 9 (14%) versus 77 (2%) died. Conclusions Tachyarrhythmias were a rare complication of acute severe COVID-19 and multisystem inflammatory syndrome in children and adolescents and were associated with worse clinical outcomes, highlighting the importance of close monitoring, aggressive treatment, and postdischarge care.


Subject(s)
COVID-19 , Tachycardia, Supraventricular , Child , Humans , Adolescent , COVID-19/complications , COVID-19/epidemiology , COVID-19/therapy , Aftercare , Patient Discharge , Hospitalization , Tachycardia, Supraventricular/epidemiology , Arrhythmias, Cardiac/epidemiology , Arrhythmias, Cardiac/etiology , Arrhythmias, Cardiac/therapy
17.
Transplant Direct ; 8(10): e1382, 2022 Oct.
Article in English | MEDLINE | ID: mdl-36204184

ABSTRACT

Evidence suggests that nutritional supplementation during normothermic ex vivo perfusion improves organ preservation. However, it is unclear whether the same benefit is observed during room temperature (subnormothermic) oxygenated perfusion. In this study, we tested the impact of providing complete nutrition during subnormothermic perfusion on kidney outcomes. Methods: Porcine kidneys were recovered after 30 min of cross clamping the renal artery in situ to simulate warm ischemic injury. After flushing with preservation solution, paired kidneys were cannulated and randomly assigned to perfusion with either (1) hemoglobin-carrier hemoglobin-based oxygen carrier or (2) hemoglobin-based oxygen carrier + total parenteral nutrition (TPN) for 12 h at 22 °C. To mimic reperfusion injury, all kidneys were reperfused with whole blood for an additional 4 h at 37 °C. Kidney function and damage were assessed. Results: Kidneys preserved with or without TPN performed equally well, showing similar renal function postreperfusion. Histological findings indicated similar levels of damage from apoptosis staining and acute tubular necrosis scores in both groups. Additionally, markers of renal damage (KIM-1) and inflammation (IL-6; high-mobility group box 1) were similar between the groups. Conclusions: Unlike other studies using normothermic oxygenated perfusion platforms, nutritional supplementation does not appear to provide any additional benefit during ex vivo kidney preservation over 12 h evaluated by whole blood-based reperfusion method at subnormothermic temperature. Further study should include a kidney autotransplant model to assess the role of TPN in vivo.

18.
Stud Fam Plann ; 53(3): 455-490, 2022 09.
Article in English | MEDLINE | ID: mdl-35922382

ABSTRACT

Most vaginally inserted methods have limited availability and use despite offering characteristics that align with many women's stated preferences (e.g., nonhormonal and/or on demand). The objective of this review was to identify enablers and barriers to women's adoption and continuation of vaginally inserted contraceptive methods in low- and middle-income countries (LMICs). We searched three databases (PubMed, Embase, and Web of Science) and 18 websites using keywords related to five vaginally inserted contraceptive methods (diaphragm, vaginal ring, female condom, copper intrauterine device [IUD], hormonal IUD) and terms associated with their adoption and continuation. Searches were limited to resources published between January 2010 and September 2020. Studies eligible for inclusion in our review presented results on women's use and perspectives on the enablers and barriers to adoption and continuation of the vaginally inserted contraceptive methods of interest in LMICs. Relevant studies among women's partners were also included, but not those of providers or other stakeholders. Data were coded, analyzed, and disaggregated according to a framework grounded in family planning (FP) literature and behavioral theories common to FP research and program implementation. Our initial search yielded 13,848 results, with 182 studies ultimately included in the analysis. Across methods, we found common enablers for method adoption, including quality contraceptive counseling as well as alignment between a woman's preferences and a method's duration of use and side effect profile. Common barriers included a lack of familiarity with the methods and product cost. Notably, vaginal insertion was not a major barrier to adoption in the literature reviewed. Vaginally inserted methods of contraception have the potential to fill a gap in method offerings and expand choice. Programmatic actions should address key barriers and enable voluntary use.


Subject(s)
Contraception , Family Planning Services , Contraception/methods , Female , Humans , Poverty
19.
N C Med J ; 83(4): 249-252, 2022.
Article in English | MEDLINE | ID: mdl-35817460

ABSTRACT

Despite the stark decline in North Carolina's teen birth rates over the past three decades, rates remain disproportionately highest amongst Black, Latinx, and Native American teens in comparison to white teens. Numerous upstream factors continue to drive racial inequities, creating greater disparities in birth rates among teens of color.


Subject(s)
Pregnancy in Adolescence , Adolescent , Birth Rate , Female , Humans , North Carolina/epidemiology , Pregnancy , Racial Groups , Swimming
20.
Curr Oncol ; 29(3): 1997-2007, 2022 03 15.
Article in English | MEDLINE | ID: mdl-35323362

ABSTRACT

Background: Canada has a publicly funded healthcare system with a complex drug funding process. After Health Canada approval to market a drug, the pan-Canadian Oncology Drug Review (pCODR) (now renamed the CADTH reimbursement review) makes a non-binding funding recommendation to the Canadian provinces (except Quebec), which each then decide whether the drug will be publicly funded. We identified the determinants of funding in this process. Methods: We analyzed drugs for advanced lung (n = 15), breast (n = 8), colorectal (CRC) (n = 7), melanoma (n = 10), and neuroendocrine (NET) (n = 3) cancers undergoing the funding decision process from 2011 to 2019. Determinants of funding assessed in the model included list price, cancer type, drug class, and pCODR recommendation. The primary outcome was the correlation between list price and time to funding (TTF: Health Canada approval to first provincial funding). Secondary outcomes included an exploratory analysis of predictors of drug funding. Results: We analyzed 43 drugs: targeted agents 72%, immunotherapy 20%, chemotherapy 7%. A total of 72% were funded in at least one province. Median TTF was 379 days (IQR 203−601). Median list price (28-day course) was CAD 8213 (IQR CAD 5391−9445). Higher list price was not correlated with TTF (correlation coefficient −0.20, p = 0.28). There was no association between list price and pCODR recommendation or the decision to fund in at least one province. A positive pCODR recommendation correlated with the provinces' funding decisions (p < 0.001), where 89% of drugs with a positive recommendation were funded and 100% of drugs with a negative recommendation were not funded. Tumor type was predictive of TTF (p < 0.001): CRC drugs were the slowest at a median of 2541 days (IQR 702−4379), and NETs were the quickest at a median of 0 days (IQR 0−502). Cancer type predicted decision to fund in at least one province (p = 0.005), with funding for 100% of NET drugs at the high end and 29% of CRC drugs at the low end. Drug class was predictive of TTF (p = 0.01): 465 days (IQR 245−702) for targeted agents, 443 days (IQR 298−587) for chemotherapy, and 339 days (IQR 164−446) for immunotherapy. Conclusions: Determinants of drug funding included cancer type, drug class, and pCODR recommendation but not list price. Factors other than cost were more heavily weighted in the funding decisions of cancer drugs in Canadian provinces.


Subject(s)
Antineoplastic Agents , Neoplasms , Antineoplastic Agents/therapeutic use , Canada , Humans , Medical Oncology , Neoplasms/drug therapy , Quebec
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