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1.
Plant Physiol ; 2024 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-38431526

RESUMO

Low temperatures occurring at the booting stage in rice (Oryza sativa L.) often result in yield loss by impeding male reproductive development. However, the underlying mechanisms by which rice responds to cold at this stage remain largely unknown. Here, we identified MITOCHONDRIAL ACYL CARRIER PROTEIN 2 (OsMTACP2), the encoded protein of which mediates lipid metabolism involved in the cold response at the booting stage. Loss of OsMTACP2 function compromised cold tolerance, hindering anther cuticle and pollen wall development, resulting in abnormal anther morphology, lower pollen fertility and seed setting. OsMTACP2 was highly expressed in tapetal cells and microspores during anther development, with the encoded protein localizing to both mitochondria and the cytoplasm. Comparative transcriptomic analysis revealed differential expression of genes related to lipid metabolism between the wild type and the Osmtacp2-1 mutant in response to cold. Through a lipidomic analysis, we demonstrated that wax esters, which are the primary lipid components of the anther cuticle and pollen walls, function as cold-responsive lipids. Their levels increased dramatically in the wild type but not in Osmtacp2-1 when exposed to cold. Additionally, mutants of two cold induced genes of wax ester biosynthesis, ECERIFERUM1 and WAX CRYSTAL-SPARSE LEAF2, showed decreased cold tolerance. These results suggest that OsMTACP2-mediated wax ester biosynthesis is essential for cold tolerance in rice at the booting stage.

2.
Genes (Basel) ; 14(10)2023 10 15.
Artigo em Inglês | MEDLINE | ID: mdl-37895293

RESUMO

Cytochrome P450s (CYPs) constitute extensive enzyme superfamilies in the plants, playing pivotal roles in a multitude of biosynthetic and detoxification pathways essential for growth and development, such as the flavonoid biosynthesis pathway. However, CYPs have not yet been systematically studied in the cultivated peanuts (Arachis hypogaea L.), a globally significant cash crop. This study addresses this knowledge deficit through a comprehensive genome-wide analysis, leading to the identification of 589 AhCYP genes in peanuts. Through phylogenetic analysis, all AhCYPs were systematically classified into 9 clans, 43 gene families. The variability in the number of gene family members suggests specialization in biological functions. Intriguingly, both tandem duplication and fragment duplication events have emerged as pivotal drivers in the evolutionary expansion of the AhCYP superfamily. Ka/Ks analysis underscored the substantial influence of strong purifying selection on the evolution of AhCYPs. Furthermore, we selected 21 genes encoding 8 enzymes associated with the flavonoid pathway. The results of quantitative real-time PCR (qRT-PCR) experiments unveiled stage-specific expression patterns during the development of peanut testa, with discernible variations between pink and red testa. Importantly, we identified a direct correlation between gene expression levels and the accumulation of metabolites. These findings offer valuable insights into elucidating the comprehensive functions of AhCYPs and the underlying mechanisms governing the divergent accumulation of flavonoids in testa of different colors.


Assuntos
Arachis , Sistema Enzimático do Citocromo P-450 , Arachis/genética , Arachis/metabolismo , Filogenia , Sistema Enzimático do Citocromo P-450/genética , Sistema Enzimático do Citocromo P-450/metabolismo , Genoma , Flavonoides/genética , Flavonoides/metabolismo
3.
JCO Oncol Pract ; 19(5): e763-e772, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36657098

RESUMO

PURPOSE: Black men have a higher risk of prostate cancer diagnosis and mortality but are less likely to receive definitive treatment. The impact of structural aspects on treatment is unknown but may lead to actionable insights to mitigate disparities. We sought to examine the associations between urology practice organization and racial composition and treatment patterns for Medicare beneficiaries with incident prostate cancer. METHODS: Using a 20% sample of national Medicare data, we identified beneficiaries diagnosed with prostate cancer between January 2010 and December 2015 and followed them through 2016. We linked urologists to their practices with tax identification numbers. We then linked patients to practices on the basis of their primary urologist. We grouped practices into quartiles on the basis of their proportion of Black patients. We used multilevel mixed-effects models to identify treatment associations. RESULTS: We identified 54,443 patients with incident prostate cancer associated with 4,194 practices. Most patients were White (87%), and 9% were Black. We found wide variation in racial practice composition and practice segregation. Patients in practices with the highest proportion of Black patients had the lowest socioeconomic status (43.1%), highest comorbidity (9.9% with comorbidity score ≥ 3), and earlier age at prostate cancer diagnosis (33.5% age 66-69 years; P < .01). Black patients had lower odds of definitive therapy (adjusted odds ratio, 0.87; 95% CI, 0.81 to 0.93) and underwent less treatment than White patients in every practice context. Black patients in practices with higher proportions of Black patients had higher treatment rates than Black patients in practices with lower proportions. Black patients had lower predicted probability of treatment (66%) than White patients (69%; P < .05). CONCLUSION: Despite Medicare coverage, we found less definitive treatment among Black beneficiaries consistent with ongoing prostate cancer treatment disparities. Our findings are reflective of the adverse effects of practice segregation and structural racism, highlighting the need for multilevel interventions.


Assuntos
Neoplasias da Próstata , Urologia , Masculino , Humanos , Idoso , Estados Unidos/epidemiologia , Medicare , Neoplasias da Próstata/epidemiologia , Neoplasias da Próstata/terapia , Neoplasias da Próstata/diagnóstico , Brancos
4.
Plant Commun ; 3(4): 100309, 2022 07 11.
Artigo em Inglês | MEDLINE | ID: mdl-35605201

RESUMO

Green petals pose a challenge for pollinators to distinguish flowers from leaves, but they are valuable as a specialty flower trait. However, little is understood about the molecular mechanisms that underlie the development of green petals. Here, we report that CINCINNATA (CIN)-like TEOSINTE BRANCHED 1/CYCLOIDEA/PCF (TCP) proteins play key roles in the control of petal color. The septuple tcp2/3/4/5/10/13/17 mutant produced flowers with green petals due to chlorophyll accumulation. Expression of TCP4 complemented the petal phenotype of tcp2/3/4/5/10/13/17. We found that chloroplasts were converted into leucoplasts in the distal parts of wild-type petals but not in the proximal parts during flower development, whereas plastid conversion was compromised in the distal parts of tcp2/3/4/5/10/13/17 petals. TCP4 and most CIN-like TCPs were predominantly expressed in distal petal regions, consistent with the green-white pattern in wild-type petals and the petal greening observed in the distal parts of tcp2/3/4/5/10/13/17 petals. RNA-sequencing data revealed that most chlorophyll biosynthesis genes were downregulated in the white distal parts of wild-type petals, but these genes had elevated expression in the distal green parts of tcp2/3/4/5/10/13/17 petals and the green proximal parts of wild-type petals. We revealed that TCP4 repressed chlorophyll biosynthesis by directly binding to the promoters of PROTOCHLOROPHYLLIDE REDUCTASE (PORB), DIVINYL REDUCTASE (DVR), and SUPPRESSOR OF OVEREXPRESSION OF CO 1 (SOC1), which are known to promote petal greening. We found that the conversion of chloroplasts to leucoplasts and the green coloration in the proximal parts of petals appeared to be conserved among plant species. Our findings uncover a major molecular mechanism that underpins the formation of petal color patterns and provide a foundation for the breeding of plants with green flowers.


Assuntos
Proteínas de Arabidopsis , Arabidopsis , Arabidopsis/metabolismo , Proteínas de Arabidopsis/genética , Proteínas de Arabidopsis/metabolismo , Clorofila/genética , Regulação da Expressão Gênica de Plantas , Melhoramento Vegetal , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo
5.
Urology ; 147: 68-73, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32916191

RESUMO

OBJECTIVE: To investigate the prevalence of burnout among Danish and American urologists. METHODS: An email invitation was sent with 2 reminders spaced by 14 days intervals to members of the Danish Urological Association and urologists at the University of Michigan to participate in a survey consisting of the 2 item Maslach Burnout Inventory. Burnout was defined as reporting "once a week," "a few times a week," or "everyday" on either the emotional exhaustion or depersonalization domains of the Maslach Burnout Inventory. Two open-ended questions were added to the survey for the Danish urologists, these were then qualitatively analyzed using thematic analysis. Categorial variables were compared using Chi square analysis. RESULTS: The response rate was 193 of 387 (49.9%) for the Danish urologists and 43 of 64 (67.1%) among American urologists. The prevalence of burnout for the American and Danish cohorts was identified in 4 (44.4%) of the American residents and 10 (32.3%) of the American attendings compared to 2 (3%) of Danish residents and 16 (12.7%) of Danish attendings. The difference in rate of burnout between Danish residents and attendings was statistically significant (P= .03). Burnout was statistically significantly different between American and Danish residents (P<.01) and attendings (P <.01). There was a statistically significant difference in rates of burnout between American and the Danish female urologists (P = .02) and similarly among male urologists (P <.01). CONCLUSION: This study demonstrated low rates of burnout among Danish urologists and a significant difference in burnout between residents and attendings from Michigan compared to Danish residents and attendings.


Assuntos
Esgotamento Profissional/epidemiologia , Urologia , Adolescente , Adulto , Idoso , Dinamarca/epidemiologia , Feminino , Humanos , Masculino , Michigan/epidemiologia , Pessoa de Meia-Idade , Prevalência , Adulto Jovem
6.
Urology ; 145: 106-112, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32739310

RESUMO

OBJECTIVE: To assess the feasibility of a prehabilitation program for cystectomy patients and to determine the effectiveness of the program in improving strength and functional capacity in the peri-operative period. MATERIALS AND METHODS: This phase I/II study accrued patients ≥60 years old from January 2013 to October 2017 with biopsy-proven bladder cancer, Karnofsky performance score ≥70 and a sedentary baseline lifestyle to participate in a 4-week supervised preoperative exercise training program. Primary outcomes were feasibility and safety; secondary outcomes included changes in fitness, patient-reported QOL, peri-operative complications and readmissions. Student's ttests and Wilcoxon signed-rank test were performed. RESULTS: Fifty-four patients enrolled in the program. Successful completion, defined as patients who began the program and adhered to >70% of the sessions, was attained by 41 of 51 patients (80.4%, 90% CI [71%-90%]). There were no adverse events. Fitness and patient-reported QOL improved postintervention, with sustained improvements in general and mental health 90-days postsurgery. The primary limitation is no control group. CONCLUSION: Prehabilitation prior to cystectomy is feasible, safe, and results in improvements in patient strength, endurance and sustained improvements in patient-reported QOL from baseline. Efforts to further evaluate the impact of prehabilitation in this population in an expanded and randomized fashion are warranted.


Assuntos
Cistectomia/efeitos adversos , Aptidão Física/fisiologia , Exercício Pré-Operatório/fisiologia , Qualidade de Vida , Neoplasias da Bexiga Urinária/cirurgia , Idoso , Estudos de Viabilidade , Feminino , Humanos , Masculino , Resultado do Tratamento
7.
Urol Oncol ; 38(10): 797.e1-797.e6, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32624425

RESUMO

OBJECTIVES: Empirically dosed enoxaparin is routinely given in the postoperative period for venous thromboembolism (VTE) prophylaxis after radical cystectomy (RC). Patient-specific factors may alter its pharmacokinetics, and it is unclear whether this leads to levels sufficient for antithrombosis. We sought to evaluate variability of anti-factor Xa levels in a cohort of RC patients receiving perioperative enoxaparin prophylaxis. MATERIAL AND METHODS: Patients undergoing RC at a single institution were placed on a postoperative pathway that included enoxaparin. An anti-factor Xa level was drawn 2 to 4 hours after the third dose. The target range for prophylaxis was 0.3 IU/ml to 0.5 IU/ml. RESULTS: The primary outcome was anti-factor Xa level. Demographics, operative time, hospital course, and 30-days post-operative VTE were compared by anti-factor Xa level group using univariate and multivariable analyses. Between January 2018 and 2019, 107 RC patients remained on pathway and were included in our analysis. Sixty-five (61%) were below target range for VTE prophylaxis.  A single VTE event (0.9%) occurred in a subprophylactic individual. The subprophylactic group had a significantly higher body mass index (P < 0.01) than those within target range. CONCLUSIONS: Higher body mass index was associated with subprophylactic enoxaparin dosing after RC. Nearly two-thirds of patients had below target anti-factor Xa levels. This suggests that dosing could be further individualized, but given the low incidence of VTE, implications of dose-adjusted prophylaxis on VTE prevention remain unknown.


Assuntos
Anticoagulantes/administração & dosagem , Cistectomia/efeitos adversos , Complicações Pós-Operatórias/prevenção & controle , Neoplasias da Bexiga Urinária/terapia , Tromboembolia Venosa/prevenção & controle , Idoso , Anticoagulantes/farmacocinética , Variação Biológica da População , Índice de Massa Corporal , Quimioterapia Adjuvante/estatística & dados numéricos , Relação Dose-Resposta a Droga , Cálculos da Dosagem de Medicamento , Monitoramento de Medicamentos/estatística & dados numéricos , Enoxaparina/administração & dosagem , Enoxaparina/farmacocinética , Feminino , Heparina/sangue , Humanos , Incidência , Masculino , Terapia Neoadjuvante/estatística & dados numéricos , Cuidados Pós-Operatórios/métodos , Cuidados Pós-Operatórios/estatística & dados numéricos , Complicações Pós-Operatórias/sangue , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Resultado do Tratamento , Tromboembolia Venosa/sangue , Tromboembolia Venosa/epidemiologia , Tromboembolia Venosa/etiologia
8.
Ann Transl Med ; 8(11): 687, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32617307

RESUMO

BACKGROUND: After release of the Comprehensive Care for Joint Replacement bundle, there has been increased emphasis on reducing readmission rates for total knee arthroplasty (TKA). The potential for a separate, clinically-relevant metric, TKA revision rates within a year following surgery, has not been fully explored. Based on this, we compared rates and payments for TKA readmission and revision procedures as metrics for improving quality and cost. METHODS: We utilized the 2013 Nationwide Readmission Database (NRD) to examine national readmission and revision rates, the reasons for revision procedures, and associated costs for elective TKA procedures. As data are not linked across years, we examined revision rates for TKA completed in the month of January by capturing revision procedures in the subsequent following 11-month period to approximate a 1-year revision rate. Diagnosis and procedure codes for revision procedures were collected. Average readmission and revision procedure costs were then calculated, and the cost distributed across the entire TKA population. RESULTS: We identified 20,851 patients having TKA surgery. The mean unadjusted 30- and 90-day TKA readmission rates were 3.4% and 5.8%, respectively. In contrast, the mean unadjusted 3-month and approximate 1-year reoperation rates were 1.0% and 1.6%, respectively. The most common cause for revision was periprosthetic joint infection, which accounting for 62% of all reported revision procedures. The mean payment for 90-day readmission was roughly half ($10,589±$11,084) of the mean inpatient payment for single reoperation procedure at 90 days ($20,222±$17,799). Importantly, nearly half (46%) of all 90-day readmissions were associated with a reoperation event within the first year. CONCLUSIONS: Readmission following TKA is associated with a 1-year reoperation in approximately half of patients. These reoperations represent a significant patient burden and have a higher per episode cost. Early reoperation may represent a more clinically relevant target for quality improvement and cost containment.

9.
Urology ; 142: 99-105, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32413517

RESUMO

OBJECTIVE: To better understand the financial implications of readmission after radical cystectomy, an expensive surgery coupled with a high readmission rate. Currently, whether hospitals benefit financially from readmissions after radical cystectomy remains unclear, and potentially obscures incentives to invest in readmission reduction efforts. MATERIALS AND METHODS: Using a 20% sample of national Medicare beneficiaries, we identified 3544 patients undergoing radical cystectomy from January 2010 to November 2014. We compared price-standardized Medicare payments for index admissions and readmissions after surgery. We also examined the variable financial impact of length of stay and the proportion of Medicare payments coming from readmissions based on overall readmission rate. RESULTS: Medicare patients readmitted after cystectomy had higher index hospitalization payments ($19,164 readmitted vs $18,146 non-readmitted, P = .03) and an average readmission payment of $7356. Adjusted average Medicare readmission payments and length of stay varied significantly across hospitals, ranging from $2854 to $15,605, and 2.0 to 17.1 days, respectively (both P <.01), with longer length of stay associated with increased payments. After hospitals were divided into quartiles based on overall readmission rates, the percent of payments coming from readmissions ranged from 5% to 13%. CONCLUSION: Readmissions following radical cystectomy were associated with increased Medicare payments for the index hospitalization, and the readmission payment, potentially limiting incentives for readmission reduction programs. Our findings highlight opportunities to reframe efforts to support patients, caregivers, and providers through improving the discharge and readmission processes to create a patient-centered experience, rather than for fear of financial penalties.


Assuntos
Cistectomia/efeitos adversos , Readmissão do Paciente/normas , Assistência Centrada no Paciente/normas , Complicações Pós-Operatórias/economia , Reembolso de Incentivo/normas , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Cistectomia/economia , Cistectomia/estatística & dados numéricos , Feminino , Humanos , Tempo de Internação/economia , Tempo de Internação/estatística & dados numéricos , Masculino , Medicare/economia , Medicare/normas , Medicare/estatística & dados numéricos , Readmissão do Paciente/economia , Readmissão do Paciente/estatística & dados numéricos , Assistência Centrada no Paciente/economia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/terapia , Reembolso de Incentivo/economia , Estados Unidos
10.
BMC Urol ; 20(1): 58, 2020 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-32460741

RESUMO

BACKGROUND: Posterior tibial nerve stimulation (PTNS) is a promising treatment for lower urinary tract symptoms (LUTS) in patients with MS. However, long term data focusing on PTNS impact on health-related quality of life (HRQOL), bowel and bladder symptoms are lacking. This paper describes a study protocol that examines the extended efficacy of PTNS on MS related bladder and bowel symptoms and resulting HRQOL. METHODS/DESIGN: This is a single-centered, prospective, longitudinal, observational cohort study of patients with MS who suffer from LUTS and are refractory to two prior treatment modalities. Participants who have elected to pursue PTNS therapy for LUTS will be eligible. The primary outcome is the median number of urinary frequency and incontinence episodes on a 3-day voiding diary at 3, 12 and 24 months compared to baseline. Secondary outcome measures will include change in total AUA-SS, M-ISI, NBSS, SF-12, SSS and BCS scores from baseline The Expanded Disability Status Scale and magnetic resonance imaging will be evaluated at baseline and annually throughout the study. DISCUSSION: This research protocol aims to expand on the existing literature regarding outcomes of PTNS in MS. Specifically, it will provide long term follow-up data on bladder, bowel, sexual and HRQOL outcomes. The completion of this study will provide longitudinal efficacy data of the impact of PTNS in MS patients. TRIAL REGISTRATION: NCT04063852.


Assuntos
Sintomas do Trato Urinário Inferior/etiologia , Sintomas do Trato Urinário Inferior/terapia , Esclerose Múltipla/complicações , Qualidade de Vida , Estimulação Elétrica Nervosa Transcutânea , Estudos de Coortes , Humanos , Estudos Longitudinais , Estudos Observacionais como Assunto/métodos , Estudos Prospectivos , Projetos de Pesquisa , Nervo Tibial
11.
Perm J ; 242020.
Artigo em Inglês | MEDLINE | ID: mdl-32069204

RESUMO

INTRODUCTION: The prevalence of childhood trauma, as measured by the Adverse Childhood Experiences (ACE) Study questionnaire, has been studied in a wide variety of community settings. However, little is known about physicians' familiarity with and use of the ACE questionnaire or the prevalence of childhood trauma in the physician community. OBJECTIVE: To survey a convenience sample of community-based physicians and resident physicians to assess for familiarity with and use of the ACE questionnaire in clinical practice and to measure the prevalence of their own ACEs. METHODS: An electronic survey was created and disseminated that included demographic questions, questions about physician awareness and use of the ACE questionnaire in clinical practice, and the 10-point ACE questionnaire. RESULTS: Most physicians surveyed (81%) reported they had never heard of the ACE questionnaire. Even fewer (3%) reported using the questionnaire in clinical practice. Most physicians (55.5%) reported no personal history of ACEs. Physicians reporting a history of childhood trauma reported a wide range of ACE scores (1-9). Compared with men, women reported a statistically higher number of ACEs (p < 0.001). CONCLUSION: In this sample of community physicians, familiarity with and clinical use of the ACE questionnaire was low. Most physicians surveyed reported no personal history of childhood trauma. Of physicians reporting a history of childhood trauma, women were disproportionately affected. Physicians in this study reported a lower prevalence of ACEs than the population they serve. Physicians must become better educated and actively address the effects of ACEs on their patients and on themselves.


Assuntos
Experiências Adversas da Infância/estatística & dados numéricos , Programas de Rastreamento/métodos , Médicos/psicologia , Médicos/estatística & dados numéricos , Adulto , Idoso , Feminino , Humanos , Masculino , Programas de Rastreamento/normas , Michigan , Pessoa de Meia-Idade , Padrões de Prática Médica , Fatores Socioeconômicos , Adulto Jovem
12.
Urol Oncol ; 38(4): 255-261, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31953004

RESUMO

OBJECTIVE: To determine if the addition of electronic health record data enables better risk stratification and readmission prediction after radical cystectomy. Despite efforts to reduce their frequency and severity, complications and readmissions following radical cystectomy remain common. Leveraging readily available, dynamic information such as laboratory results may allow for improved prediction and targeted interventions for patients at risk of readmission. METHODS: We used an institutional electronic medical records database to obtain demographic, clinical, and laboratory data for patients undergoing radical cystectomy. We characterized the trajectory of common postoperative laboratory values during the index hospital stay using support vector machine learning techniques. We compared models with and without laboratory results to assess predictive ability for readmission. RESULTS: Among 996 patients who underwent radical cystectomy, 259 patients (26%) experienced a readmission within 30 days. During the first week after surgery, median daily values for white blood cell count, urea nitrogen, bicarbonate, and creatinine differentiated readmitted and nonreadmitted patients. Inclusion of laboratory results greatly increased the ability of models to predict 30-day readmissions after cystectomy. CONCLUSIONS: Common postoperative laboratory values may have discriminatory power to help identify patients at higher risk of readmission after radical cystectomy. Dynamic sources of physiological data such as laboratory values could enable more accurate identification and targeting of patients at greatest readmission risk after cystectomy. This is a proof of concept study that suggests further exploration of these techniques is warranted.


Assuntos
Cistectomia/métodos , Registros Eletrônicos de Saúde/normas , Aprendizado de Máquina/normas , Neoplasias da Bexiga Urinária/sangue , Neoplasias da Bexiga Urinária/cirurgia , Idoso , Feminino , Humanos , Masculino , Readmissão do Paciente , Período Pós-Operatório
13.
Urol Pract ; 7(6): 454-460, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37287147

RESUMO

INTRODUCTION: Consultations represent a significant workload for inpatient urology providers, yet consult patterns are poorly described. We report trends in billable urology consult activity by location, time and organization of consult residents at a single institution. METHODS: Using a secure database urology consults between 2011 and 2018 at an academic center were recorded. Consult time, location and management were documented. Consults were considered eligible for billing if seen by faculty at time of consult in the emergency room or within 24 hours in the inpatient or operating room settings. Furthermore, in 2016 consult responsibilities overnight were given to an in-house resident. An interrupted time series was used to evaluate trends in consultations. RESULTS: Ultimately 18,431 consults were seen, 40.8% in the inpatient setting and 55.2% in the emergency room setting. The overall number of consults increased annually. The majority of consults (64.8%) were made during the day. Around 88.7% of inpatient and 88.2% of operating room consults were eligible for billing, yet only half (54.43%) of emergency room consults were eligible. After the addition of an in-house consult resident there was a significant (12%) increase in the number of billable consults. CONCLUSIONS: Ultimately, nearly half of emergency room consults were not eligible for billing. Initiation of an in-house overnight consult resident significantly increased the fraction of total billable consults. Understanding patterns in consult data offers insight into quality improvement measures that maximize departmental labor efficiency.

14.
15.
Mol Plant ; 13(1): 128-143, 2020 01 06.
Artigo em Inglês | MEDLINE | ID: mdl-31698047

RESUMO

Plant plasmodesmata (PDs) are specialized channels that enable communication between neighboring cells. The intercellular permeability of PDs, which affects plant development, defense, and responses to stimuli, must be tightly regulated. However, the lipid compositions of PD membrane and their impact on PD permeability remain elusive. Here, we report that the Arabidopsis sld1 sld2 double mutant, lacking sphingolipid long-chain base 8 desaturases 1 and 2, displayed decreased PD permeability due to a significant increase in callose accumulation. PD-located protein 5 (PDLP5) was significantly enriched in the leaf epidermal cells of sld1 sld2 and showed specific binding affinity to phytosphinganine (t18:0), suggesting that the enrichment of t18:0-based sphingolipids in sld1 sld2 PDs might facilitate the recruitment of PDLP5 proteins to PDs. The sld1 sld2 double mutant seedlings showed enhanced resistance to the fungal-wilt pathogen Verticillium dahlia and the bacterium Pseudomonas syringae pv. tomato DC3000, which could be fully rescued in sld1 sld2 pdlp5 triple mutant. Taken together, these results indicate that phytosphinganine might regulate PD functions and cell-to-cell communication by modifying the level of PDLP5 in PD membranes.


Assuntos
Proteínas de Arabidopsis/metabolismo , Arabidopsis/imunologia , Comunicação Celular , Glucanos/metabolismo , Proteínas de Membrana/metabolismo , Imunidade Vegetal , Plasmodesmos/metabolismo , Esfingosina/análogos & derivados , Arabidopsis/genética , Arabidopsis/microbiologia , Proteínas de Arabidopsis/genética , Morte Celular , Proteínas de Membrana/genética , Mutação , Permeabilidade , Pseudomonas syringae/patogenicidade , Esfingolipídeos/metabolismo , Esfingosina/metabolismo
16.
JAMA Netw Open ; 2(11): e1916008, 2019 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-31755949

RESUMO

Importance: The Hospital Readmissions Reduction Program (HRRP) is a Centers for Medicare and Medicaid Services policy that levies hospital reimbursement penalties based on excess readmissions of patients with 4 medical conditions and 3 surgical procedures. A greater understanding of factors associated with the 3 surgical reimbursement penalties is needed for clinicians in surgical practice. Objective: To investigate the first year of HRRP readmission penalties applied to 2 surgical procedures-elective total hip arthroplasty (THA) and total knee arthroplasty (TKA)-in the context of hospital and patient characteristics. Design, Setting, and Participants: Fiscal year 2015 HRRP penalization data from Hospital Compare were linked with the American Hospital Association Annual Survey and with the Healthcare Cost and Utilization Project State Inpatient Database for hospitals in the state of Florida. By using a case-control framework, those hospitals were separated based on HRRP penalty severity, as measured with the HRRP THA and TKA excess readmission ratio, and compared according to orthopedic volume as well as hospital-level and patient-level characteristics. The first year of HRRP readmission penalties applied to surgery in Florida Medicare subsection (d) hospitals was examined, identifying 60 663 Medicare patients who underwent elective THA or TKA in 143 Florida hospitals. The data analysis was conducted from February 2016 to January 2017. Exposures: Annual hospital THA and TKA volume, other hospital-level characteristics, and patient factors used in HRRP risk adjustment. Main Outcomes and Measures: The HRRP penalties with HRRP excess readmission ratios were measured, and their association with annual THA and TKA volume, a common measure of surgical quality, was evaluated. The HRRP penalties for surgical care according to hospital and readmitted patient characteristics were then examined. Results: Among 143 Florida hospitals, 2991 of 60 663 Medicare patients (4.9%) who underwent THA or TKA were readmitted within 30 days. Annual hospital arthroplasty volume seemed to follow an inverse association with both unadjusted readmission rates (r = -0.16, P = .06) and HRRP risk-adjusted readmission penalties (r = -0.12, P = .14), but these associations were not statistically significant. Other hospital characteristics and readmitted patient characteristics were similar across HRRP orthopedic penalty severity. Conclusions and Relevance: This study's findings suggest that higher-volume hospitals had less severe, but not significantly different, rates of readmission and HRRP penalties, without systematic differences across readmitted patients.


Assuntos
Artroplastia de Quadril/efeitos adversos , Artroplastia do Joelho/efeitos adversos , Readmissão do Paciente/estatística & dados numéricos , Idoso , Artroplastia de Quadril/estatística & dados numéricos , Artroplastia do Joelho/estatística & dados numéricos , Estudos de Casos e Controles , Centers for Medicare and Medicaid Services, U.S./economia , Centers for Medicare and Medicaid Services, U.S./normas , Feminino , Florida , Humanos , Masculino , Readmissão do Paciente/economia , Mecanismo de Reembolso/economia , Mecanismo de Reembolso/organização & administração , Risco Ajustado , Estados Unidos
17.
BJU Int ; 124(6): 955-961, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31313473

RESUMO

OBJECTIVE: To examine predictors of early readmissions after radical cystectomy (RC). Factors associated with preventable readmissions may be most evident in readmissions that occur within 3 days of discharge, commonly termed 'bounce-back' readmissions, and identifying such factors may inform efforts to reduce surgical readmissions. PATIENTS AND METHODS: We utilised the Healthcare Cost and Utilization Project's State Inpatient Databases to examine 1867 patients undergoing RC in 2009 and 2010, and identified all patients readmitted within 30 days of discharge. We assessed differences between patients experiencing bounce-back readmission compared to those readmitted 8-30 days after discharge using logistic regression models and also calculated abbreviated LACE scores to assess the utility of common readmissions risk stratification algorithms. RESULTS: The 30-day and bounce-back readmission rates were 28.4% and 5.6%, respectively. Although no patient or index hospitalisation characteristics were significantly associated with bounce-back readmissions in adjusted analyses, bounce-back patients did have higher rates of gastrointestinal (14.3% vs 6.7%, P = 0.02) and wound (9.5% vs 3.0%, P < 0.01) diagnoses, as well as increased index and readmission length of stay (5 vs 4 days, P = 0.01). Overall, the median abbreviated LACE score was 7, which fell into the moderate readmission risk category, and no difference was observed between readmitted and non-readmitted patients. CONCLUSION: One in five readmissions after RC occurs within 3 days of initial discharge, probably due to factors present at discharge. However, sociodemographic and clinical factors, as well as traditional readmission risk tools were not predictive of this bounce-back. Effective strategies to reduce bounce-back readmission must identify actionable clinical factors prior to discharge.


Assuntos
Cistectomia , Readmissão do Paciente/estatística & dados numéricos , Idoso , Cistectomia/efeitos adversos , Cistectomia/estatística & dados numéricos , Feminino , Humanos , Tempo de Internação/estatística & dados numéricos , Masculino , Complicações Pós-Operatórias
18.
Fertil Steril ; 112(3): 562-568, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31262522

RESUMO

OBJECTIVE: To investigate infertility rates and access to infertility care among women in the United States. DESIGN: Retrospective cross-sectional. SETTING: Not applicable. PATIENT(S): Women between 20 and 44 years-old who participated in the National Health and Nutrition Examination Survey between 2013 and 2016 and answered questions RHQ074 ("have you ever attempted to become pregnant over a period of at least a year without becoming pregnant?") and RHQ076 ("have you ever been to a doctor or other medical provider because you were unable to become pregnant?"). INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Rates of infertility and accessing infertility care. RESULT(S): Women reported infertility at a rate of 12.5% (95% confidence interval, 10.8-14.4). Higher infertility rates were noted with increasing age and body mass index. There were no differences in infertility rates by race/ethnicity, education, income, U.S. citizenship, insurance, or primary location of health care. However, women with less than a high school diploma accessed infertility care less than women with a college degree (5.0% vs. 11.6%). Women with incomes less than $25,000 sought infertility care less than those with incomes above $100,000 (5.4% vs. 11.6%). Non-U.S. citizens accessed infertility care less than U.S. citizens (6.9% vs. 9.4%), and uninsured women reported fewer visits for infertility than insured women (5.9% vs. 9.9%). Women who used the emergency department as their primary medical location reported accessing infertility care less than those who relied on a hospital outpatient unit (1.4% vs. 14.9%). CONCLUSION(S): These nationally representative findings highlight the need to address disparities in access to infertility care.


Assuntos
Acessibilidade aos Serviços de Saúde/economia , Disparidades em Assistência à Saúde/economia , Infertilidade Feminina/economia , Infertilidade Feminina/terapia , Inquéritos Nutricionais/economia , Adulto , Estudos Transversais , Escolaridade , Feminino , Acessibilidade aos Serviços de Saúde/tendências , Disparidades em Assistência à Saúde/tendências , Humanos , Infertilidade Feminina/epidemiologia , Inquéritos Nutricionais/tendências , Gravidez , Estudos Retrospectivos , Fatores Socioeconômicos , Estados Unidos/epidemiologia
19.
Biosci Rep ; 39(5)2019 05 31.
Artigo em Inglês | MEDLINE | ID: mdl-30988066

RESUMO

Regulatory T cells (Tregs) and T helper 17 (Th17) cells contribute to cancer progression and prognosis. However, regulatory factors associated with Tregs-Th17 balance were not completely understood. We previously demonstrated an immune-modulatory capacity by Notch signaling inactivation to reverse Tregs-Th17 disequilibrium in chronic hepatitis C. Thus, the aim of current study was to assess the role of Notch signaling in modulation Tregs and Th17 cells function in gastric cancer (GC) patients. A total of 51 GC patients and 18 normal controls (NCs) were enrolled. Notch1 and Notch2 mRNA expressions were semiquantified by real-time polymerase chain reaction. Tregs/Th17 percentages, transcriptional factors, and cytokines production were investigated in response to the stimulation of Notch signaling inhibitor DAPT. Both Notch1 and Notch2 mRNA expressions were elevated in GC tissues and peripheral bloods in GC patients. CD4+CD25+CD127dim/- Tregs and Th17 cells percentage was also elevated in GC patients compared with in NCs. DAPT treatment did not affect frequency of either circulating Tregs or Th17 cells, however, reduced FoxP3/RORγt mRNA expression and interleukin (IL)-35/IL-17 production in purified CD4+ T cells from GC patients. Moreover, blockade of Notch signaling also inhibited the suppressive function of purified CD4+CD25+CD127dim/- Tregs from GC patients, which presented as elevation of cellular proliferation and IL-35 secretion. The current data further provided mechanism underlying Tregs-Th17 balance in GC patients. The link between Notch signaling and Th cells might lead to a new therapeutic target for GC patients.


Assuntos
Antígenos CD4/imunologia , Subunidade alfa de Receptor de Interleucina-2/imunologia , Subunidade alfa de Receptor de Interleucina-7/imunologia , Receptores Notch/imunologia , Neoplasias Gástricas/imunologia , Subpopulações de Linfócitos T/imunologia , Adulto , Antígenos CD4/análise , Células Cultivadas , Feminino , Humanos , Subunidade alfa de Receptor de Interleucina-2/análise , Subunidade alfa de Receptor de Interleucina-7/análise , Masculino , Pessoa de Meia-Idade , Receptores Notch/análise , Transdução de Sinais , Neoplasias Gástricas/patologia , Subpopulações de Linfócitos T/patologia , Linfócitos T Reguladores/imunologia , Linfócitos T Reguladores/patologia , Células Th17/imunologia , Células Th17/patologia
20.
Neurourol Urodyn ; 38(5): 1332-1338, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30912199

RESUMO

OBJECTIVE: Clean intermittent catheterization (CIC) is a preferred method of bladder management for many patients with spinal cord injury (SCI), but long-term adherence is low. The aim of this study is to identify factors associated with low urinary quality of life (QoL) in SCI adults performing CIC. METHODS: Over 1.5 years, 1479 adults with SCI were prospectively enrolled through the Neurogenic Bladder Research Group registry, and 753 on CIC with no prior surgeries were included. Injury characteristics, complications, hand function, and Neurogenic Bladder Symptom Score (NBSS) were analyzed. The NBSS QoL question (overall satisfaction with urinary function) was dichotomized to generate comparative groups (dissatisfied vs neutral/satisfied). RESULTS: The cohort was 32.9% female with a median age of 43.2 (18-86) years, time since the injury of 9.8 (0-48.2) years, and 69.0% had an injury at T1 or below. Overall 36.1% were dissatisfied with urinary QoL. On multivariable analysis, female gender (odds ratio [OR], 1.63; 95% confidence interval [CI], 1.15-2.31; P = 0.016), earlier injury (OR, 0.95 per year; 95% CI, 0.93-0.97; P < 0.001), ≥4 urinary tract infections (UTIs) per year (OR, 2.36; 95% CI, 1.47-3.81; P = 0.001), and severe bowel dysfunction (OR, 1.42; 95% CI, 1.02-1.98; P = 0.035) predicted dissatisfaction. Level of injury, fine motor hand function, and caregiver dependence for CIC were not associated with dissatisfaction. CONCLUSIONS: In a mature SCI cohort, physical disability does not predict dissatisfaction with urinary QoL but severe bowel dysfunction and recurrent UTIs have a significant negative impact. With time the rates of dissatisfaction decline but women continue to be highly dissatisfied on CIC and may benefit from early intervention to minimize the burden of CIC on urinary QoL.


Assuntos
Cateterismo Uretral Intermitente/efeitos adversos , Qualidade de Vida , Traumatismos da Medula Espinal/fisiopatologia , Bexiga Urinaria Neurogênica/fisiopatologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Satisfação do Paciente , Fatores Sexuais , Traumatismos da Medula Espinal/complicações , Bexiga Urinaria Neurogênica/etiologia , Infecções Urinárias/etiologia , Micção/fisiologia , Adulto Jovem
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