Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 163
Filtrar
Mais filtros

Base de dados
Tipo de documento
Intervalo de ano de publicação
1.
Ann Surg ; 278(3): 396-407, 2023 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-37314222

RESUMO

OBJECTIVE: To characterize industry nonresearch payments made to general and fellowship-trained surgeons between 2016 and 2020. BACKGROUND: The Centers for Medicare & Medicaid Services Open Payments Data (OPD) reports industry payments made to physicians related to drugs and medical devices. General payments are those not associated with research. METHODS: OPD data were queried for general and fellowship-trained surgeons who received general payments from 2016 to 2020. Payments' nature, amount, company, covered product, and location were collected. Surgeons' demographics, subspecialty, and leadership roles in hospitals, societies, and editorial boards were evaluated. RESULTS: From 2016 to 2020, 44,700 general and fellowship-trained surgeons were paid $535,425,543 in 1,440,850 general payments. The median payment was $29.18. The most frequent payments were for food and beverage (76.6%) and travel and lodging (15.6%); however, the highest dollar payments were for consulting fees ($93,128,401; 17.4%), education ($88,404,531; 16.5%), royalty or license ($87,471,238; 16.3%), and travel and lodging ($66,333,149; 12.4%). Five companies made half of all payments ($265,654,522; 49.6%): Intuitive Surgical ($128,517,411; 24%), Boston Scientific ($48,094,570; 9%), Edwards Lifesciences ($41,835,544, 7.8%), Medtronic Vascular ($33,607,136; 6.3%), and W. L. Gore & Associates ($16,626,371; 3.1%). Medical devices comprised 74.7% of payments ($399,897,217), followed by drugs and biologicals ($33,945,300; 6.3%). Texas, California, Florida, New York, and Pennsylvania received the most payments; however, the top dollar payments were in California ($65,702,579; 12.3%), Michigan ($52,990,904, 9.9%), Texas ($39,362,131; 7.4%), Maryland ($37,611,959; 7%), and Florida ($33,417,093, 6.2%). General surgery received the highest total payments ($245,031,174; 45.8%), followed by thoracic surgery ($167,806,514; 31.3%) and vascular surgery ($60,781,266; 11.4%). A total of 10,361 surgeons were paid >$5000, of which 1614 were women (15.6%); in this group, men received higher payments than women (means, $53,446 vs $22,571; P <0.001) and thoracic surgeons received highest payments (mean, $76,381; NS, P =0.14). A total of 120 surgeons were paid >$500,000 ($203,011,672; 38%)-5 non-Hispanic White (NHW) women (4.2%) and 82 NHW (68.3%), 24 Asian (20%), 7 Hispanic (5.8%), and 2 Black (1.7%) men; in this group, men received higher payments than women (means, $1,735,570 vs $684,224), and NHW men received payments double those of other men (means, $2,049,554 vs $955,368; NS, P =0.087). Among these 120 highly paid surgeons (>$500,000), 55 held hospital and departmental leadership roles, 30 were leaders in surgical societies, 27 authored clinical guidelines, and 16 served on journal editorial boards. During COVID-19, 2020 experienced half the number of payments than the preceding 3 years. CONCLUSIONS: General and fellowship-trained surgeons received substantial industry nonresearch payments. The highest-paid recipients were men. Further work is warranted in assessing how race, gender, and leadership roles influence the nature of industry payments and surgical practice. A significant decline in payments was observed early during the COVID-19 pandemic.


Assuntos
COVID-19 , Cirurgiões , Idoso , Masculino , Humanos , Feminino , Estados Unidos , Bolsas de Estudo , Pandemias , COVID-19/epidemiologia , Medicare , Conflito de Interesses , Bases de Dados Factuais
2.
Am J Transplant ; 22(11): 2608-2615, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35833730

RESUMO

Deciding which patients would benefit from intestinal transplantation (IT) remains an ethical/clinical dilemma. New criteria* were proposed in 2015: ≥2 intensive care unit (ICU) admissions, loss of ≥3 central venous catheter (CVC) sites, and persistently elevated conjugated bilirubin (CB ≥ 75 µmol/L) despite 6 weeks of lipid modification strategies. We performed a retrospective, international, multicenter validation study of 443 children (61% male, median gestational age 34 weeks [IQR 29-37]), diagnosed with IF between 2010 and 2015. Primary outcome measure was death or IT. Sensitivity, specificity, NPV, PPV, and probability of death/transplant (OR, 95% confidence intervals) were calculated for each criterion. Median age at IF diagnosis was 0.1 years (IQR 0.03-0.14) with median follow-up of 3.8 years (IQR 2.3-5.3). Forty of 443 (9%) patients died, 53 of 443 (12%) were transplanted; 11 died posttransplant. The validated criteria had a high predictive value of death/IT; ≥2 ICU admissions (p < .0001, OR 10.2, 95% CI 4.0-25.6), persistent CB ≥ 75 µmol/L (p < .0001, OR 8.2, 95% CI 4.8-13.9). and loss of ≥3 CVC sites (p = .0003, OR 5.7, 95% CI 2.2-14.7). This large, multicenter, international study in a contemporary cohort confirms the validity of the Toronto criteria. These validated criteria should guide listing decisions in pediatric IT.


Assuntos
Unidades de Terapia Intensiva , Intestinos , Criança , Humanos , Masculino , Recém-Nascido , Lactente , Feminino , Estudos Retrospectivos , Resultado do Tratamento , Intestinos/transplante , Estudos de Coortes
3.
J Pediatr ; 237: 16-23.e4, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34153281

RESUMO

OBJECTIVES: To assess the natural history and outcomes of children with intestinal failure in a large, multicenter, geographically diverse contemporary cohort (2010-2015) from 6 pediatric intestinal failure programs. STUDY DESIGN: Retrospective analysis of a multicenter intestinal failure cohort (n = 443). Competing-risk analysis was used to obtain cumulative incidence rates for the primary outcome (enteral autonomy, transplantation, or death). The χ2 test and Cox proportional hazard regression were used for bivariate and multivariable analyses. RESULTS: The study cohort comprised 443 patients (61.2% male). Primary etiologies included short bowel syndrome (SBS), 84.9%; dysmotility disorder, 7.2%; and mucosal enteropathy, 7.9%. Cumulative incidences for enteral autonomy, transplantation, and death at 6 years of follow-up were 53.0%, 16.7%, and 10.5%, respectively. Enteral autonomy was associated with SBS, ≥50% of small bowel length, presence of an ileocecal valve (ICV), absence of portal hypertension, and follow-up in a non-high-volume transplantation center. The composite outcome of transplantation/death was associated with persistent advanced cholestasis and hypoalbuminemia; age <1 year at diagnosis, ICV, and intact colon were protective. CONCLUSIONS: The rates of death and transplantation in children with intestinal failure have decreased; however, the number of children achieving enteral autonomy has not changed significantly, and a larger proportion of patients remain parenteral nutrition dependent. New strategies to achieve enteral autonomy are needed to improve patient outcomes.


Assuntos
Enteropatias/epidemiologia , Enteropatias/terapia , Adolescente , Criança , Pré-Escolar , Progressão da Doença , Feminino , Seguimentos , Humanos , Incidência , Lactente , Recém-Nascido , Enteropatias/etiologia , Intestinos/transplante , Masculino , Nova Zelândia/epidemiologia , América do Norte/epidemiologia , Nutrição Parenteral , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Resultado do Tratamento , Reino Unido/epidemiologia
4.
J Pediatr Gastroenterol Nutr ; 73(1): 17-22, 2021 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-33534364

RESUMO

OBJECTIVES: A group of short bowel syndrome (SBS) patients developed chronic intestinal inflammation while struggling weaning off parenteral nutrition (PN). They did not respond to standard management of SBS and food allergy. We treated them with glucocorticoids and described the outcome. METHODS: Our study is a retrospective descriptive study. We reviewed records from the intestinal rehabilitation program from 2006 to 2017. We identified 15 patients whose lab values, pathology results, and clinic notes were reviewed. RESULTS: We had more patients (n = 10) with diagnosis of gastroschisis, and more female patients (n = 9). Seven patients weaned off PN with median treatment duration of 5 months, 5 of which remained on budesonide for significant period of time (median: 7.5 months). One of these 7 patients relapsed, as the patient resumed glucocorticoids because of recurrence of chronic intestinal inflammation. Six of 15 children had significant eosinophils in their initial biopsy, 5 of these children weaned off PN whereas 1 child's gastrointestinal (GI) bleeding stopped. Four patients were not able to decrease PN calorie. Two of these patients' GI bleeding stopped, the other 2 had normalized histology. CONCLUSIONS: For SBS children with histologically confirmed chronic intestinal inflammation, glucocorticoids may help promote enteral feeding tolerance. Glucocorticoids regimen should be chosen individually. Patients are more likely to respond if initial histology has significant eosinophilic infiltration. Patients may need to remain on glucocorticoids for over 6 months.


Assuntos
Glucocorticoides , Síndrome do Intestino Curto , Criança , Nutrição Enteral , Feminino , Humanos , Lactente , Inflamação , Estudos Retrospectivos , Síndrome do Intestino Curto/terapia , Resultado do Tratamento
5.
Nucl Technol ; 207(sup1)2021.
Artigo em Inglês | MEDLINE | ID: mdl-34853484

RESUMO

We report gamma ray spectroscopy measurements of trinitite samples and analogous samples obtained from detonation sites in Nevada and Semipalatinsk, as well as in situ measurements of topsoil at the Trinity site. We also report the first isotopic composition measurements of trinitite using the novel forensics technique of decay energy spectroscopy (DES) as a complement to traditional forensics techniques. Our gamma spectroscopy and DES measurements are compared to other published results.

6.
Transpl Int ; 33(2): 142-148, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31523865

RESUMO

Intestinal transplant recipients experience a high rate of renal complications secondary to dehydration due to increased ostomy output. It is hypothesized that inclusion of donor colon in the intestinal allograft may improve renal function in patients without functional native colon by improving fluid absorption. A single-center retrospective study of intestinal transplant recipients compared outcomes of patients receiving en bloc colon as part an intestinal allograft (ICTx), and those not receiving colon (CCNTx), as well as a control group of intestinal transplant recipients with functional native colon (ITx). Forty-seven patients (ICTx n = 17, CCNTx n = 15, ITx n = 15) were studied. One-year post-transplant renal function, as measured by change in glomerular filtration rate (GFR) and blood urea nitrogen (BUN) from baseline, was superior in ICTx (mean delta-GFR of -1.31 and delta-BUN of -1.46) compared to CCNTx (-6.54 and 17.54, P = 0.05 and P = 0.17, respectively) and similar to the ITx controls (0.55 and 2.09). Recipients of donor colon experienced a higher rate of ileostomy reversal when compared to CCNTx (62.5% vs. 20%, P = 0.0008), which was similar to the ITx controls (60%). These findings support the inclusion of en bloc donor colon in the intestinal allograft for recipients without functional native colon.


Assuntos
Colo/transplante , Intestinos/transplante , Rim/fisiologia , Aloenxertos , Taxa de Filtração Glomerular , Humanos , Ileostomia , Rim/fisiopatologia , Estudos Retrospectivos
7.
Transpl Infect Dis ; 22(2): e13248, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31960531

RESUMO

Intestinal transplant recipients (ITR) are at high risk for infections due to the high level of immunosuppression required to prevent rejection. There are limited data regarding viral enteritis post-intestinal transplantation. We retrospectively reviewed ITR transplanted between January 2008 and December 2016. Descriptive statistics, including mean (standard deviation) and median (range), were performed. Sixty-one (43.9%) of the 139 transplanted patients had viral enteritis: 26% norovirus, 25% adenovirus, and 9% each rotavirus and sapovirus. The median age of pediatric patients was 1.6 years (0.4-16.9) and for adults 36.3 years (27.1-48.2). Fifty-seven (58%) of 99 pediatric ITR had viral enteritis compared to 4 (10%) of 40 adult ITR. Median time-to-clinical resolution of enteritis for all patients was 5 days (1-92). Standard of care therapies administered: anti-motility agents (10%), anti-emetics agents (14%), and intravenous fluids (42%). There was a higher incidence of viral enteritis in pediatric compared to adults ITR. The majority of viral enteritis episodes resolved within 1 week and were treated with supportive therapy.


Assuntos
Enterite/virologia , Intestinos/transplante , Intestinos/virologia , Transplantados/estatística & dados numéricos , Viroses/diagnóstico , Adolescente , Adulto , Criança , Pré-Escolar , Enterite/terapia , Feminino , Humanos , Terapia de Imunossupressão/efeitos adversos , Lactente , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Viroses/terapia , Adulto Jovem
8.
Clin Transplant ; 33(11): e13713, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31532002

RESUMO

Open abdomen and fascial dehiscence after intestinal transplantation increase morbidity. This study aims to identify recipient and donor factors associated with failure to achieve sustained primary closure (failed-SPC) of the abdomen after intestinal transplant. We conducted a single-center retrospective study of 96 intestinal transplants between 2013 and 2018. Thirty-eight (40%) were adult patients, and 58 were pediatric patients. Median age at transplantation was 36.0 and 5.8 years, respectively. Failed-SPC occurred in 31 (32%) patients. Identified risk factors of failed-SPC included preexisting enterocutaneous fistula (OR: 6.8, CI: 2.4-19.6, P = .0003), isolated intestinal graft (OR: 3.4, CI: 1.24-9.47, P = .02), male sex in adults (OR: 3.93, CI: 1.43-10.8, P = .009), and age over four years (OR: 6.22, CI: 1.7-22.7, P = .004). There was no association with primary diagnosis and prior transplant with failed-SPC. Donor-to-recipient size ratios did not predict failed-SPC. There was an association between failed-SPC and extended median hospital stay (100 vs 57 days, P = .007) and increased time to enteral autonomy in pediatric patients. There is a relationship between failed-SPC and a higher rate of laparotomy (OR: 21.4, CI: 2.78-178.2, P = .0003) and fistula formation posttransplant (OR: 11.4, CI: 2.83-45.84, P = .0005) in pediatric patients. Given inferior outcomes with failed-SPC, high-risk recipients require careful evaluation.


Assuntos
Parede Abdominal/cirurgia , Rejeição de Enxerto/mortalidade , Hérnia Abdominal/mortalidade , Intestinos/transplante , Transplante de Órgãos/mortalidade , Complicações Pós-Operatórias/mortalidade , Parede Abdominal/fisiopatologia , Adulto , Estudos de Casos e Controles , Criança , Pré-Escolar , Feminino , Seguimentos , Rejeição de Enxerto/etiologia , Rejeição de Enxerto/patologia , Sobrevivência de Enxerto , Hérnia Abdominal/etiologia , Hérnia Abdominal/patologia , Humanos , Masculino , Transplante de Órgãos/efeitos adversos , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/patologia , Prognóstico , Estudos Retrospectivos , Fatores de Risco , Taxa de Sobrevida
9.
Pediatr Transplant ; 22(3): e13165, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29441651

RESUMO

Children undergoing LSBPTx are at increased risk of IPI due to splenectomy. We aimed to describe the clinical features and outcomes of IPI in pediatric LSBPTx recipients. Between 2008 and 2016, 122 LSBPTx children at our center were retrospectively reviewed. Nine patients had 12 episodes of IPI; the median age at first infection was 3.5 years (range: 1.5-7.1 years). The median time from transplant to first infection was 3 years (range: 0.8-5.8 years). Clinical presentation included as follows: pneumonia (n = 1), bacteremia/sepsis (n = 7), pneumonia with sepsis (n = 1), meningitis with sepsis (n = 2), pneumonia and meningitis with sepsis (n = 1). The overall risk for IPI was 7.4% or 0.9% per year. The mortality rate was 22%. Seven (78%) children had received at least one dose of PCV13, four (44%) patients had received 23-valent pneumococcal polysaccharide vaccine prior to IPI. All patients were on oral penicillin prophylaxis. In conclusion, despite partial or complete pneumococcal immunization and reported antimicrobial prophylaxis, IPI in LSBPTx children can have a fatal outcome. Routine monitoring of pneumococcal serotype antibodies to determine the timing for revaccination might be warranted to ensure protective immunity in these transplant recipients.


Assuntos
Intestino Delgado/transplante , Transplante de Fígado , Transplante de Pâncreas , Infecções Pneumocócicas/diagnóstico , Infecções Pneumocócicas/etiologia , Complicações Pós-Operatórias/diagnóstico , Criança , Pré-Escolar , Feminino , Seguimentos , Humanos , Lactente , Masculino , Infecções Pneumocócicas/epidemiologia , Infecções Pneumocócicas/terapia , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/terapia , Estudos Retrospectivos , Esplenectomia , Resultado do Tratamento
11.
J Pediatr ; 181: 102-111.e5, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27855998

RESUMO

OBJECTIVE: To determine safety and pharmacodynamics/efficacy of teduglutide in children with intestinal failure associated with short bowel syndrome (SBS-IF). STUDY DESIGN: This 12-week, open-label study enrolled patients aged 1-17 years with SBS-IF who required parenteral nutrition (PN) and showed minimal or no advance in enteral nutrition (EN) feeds. Patients enrolled sequentially into 3 teduglutide cohorts (0.0125 mg/kg/d [n = 8], 0.025 mg/kg/d [n = 14], 0.05 mg/kg/d [n = 15]) or received standard of care (SOC, n = 5). Descriptive summary statistics were used. RESULTS: All patients experienced ≥1 treatment-emergent adverse event; most were mild or moderate. No serious teduglutide-related treatment-emergent adverse events occurred. Between baseline and week 12, prescribed PN volume and calories (kcal/kg/d) changed by a median of -41% and -45%, respectively, with 0.025 mg/kg/d teduglutide and by -25% and -52% with 0.05 mg/kg/d teduglutide. In contrast, PN volume and calories changed by 0% and -6%, respectively, with 0.0125 mg/kg/d teduglutide and by 0% and -1% with SOC. Per patient diary data, EN volume increased by a median of 22%, 32%, and 40% in the 0.0125, 0.025, and 0.05 mg/kg/d cohorts, respectively, and by 11% with SOC. Four patients achieved independence from PN, 3 in the 0.05 mg/kg/d cohort and 1 in the 0.025 mg/kg/d cohort. Study limitations included its short-term, open-label design, and small sample size. CONCLUSIONS: Teduglutide was well tolerated in pediatric patients with SBS-IF. Teduglutide 0.025 or 0.05 mg/kg/d was associated with trends toward reductions in PN requirements and advancements in EN feeding in children with SBS-IF. TRIAL REGISTRATION: ClinicalTrials.gov:NCT01952080; EudraCT: 2013-004588-30.


Assuntos
Nutrição Enteral/métodos , Peptídeos/administração & dosagem , Síndrome do Intestino Curto/tratamento farmacológico , Adolescente , Fatores Etários , Criança , Pré-Escolar , Relação Dose-Resposta a Droga , Esquema de Medicação , Feminino , Seguimentos , Humanos , Masculino , Segurança do Paciente , Peptídeos/efeitos adversos , Estudos Prospectivos , Medição de Risco , Índice de Gravidade de Doença , Fatores Sexuais , Síndrome do Intestino Curto/diagnóstico , Síndrome do Intestino Curto/terapia , Resultado do Tratamento
12.
Mycoses ; 60(6): 366-374, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28139856

RESUMO

Small bowel transplantation (SBT) can be a life-saving medical procedure. However, these recipients experience high risk of bloodstream infections caused by Candida. This research aims to characterise the SBT recipient gut microbiota over time following transplantation and investigate the epidemiology of candidaemia in seven paediatric patients. Candida species from the recipients' ileum and bloodstream were identified by internal transcribed spacer sequence and distinguished to strain by multilocus sequence typing and randomly amplified polymorphic DNA. Antifungal susceptibility of bloodstream isolates was determined against nine antifungals. Twenty-two ileostomy samples harboured at least one Candida species. Fungaemia were caused by Candida parapsilosis, Candida albicans, Candida glabrata, Candida orthopsilosis and Candida pelliculosa. All but three bloodstream isolates showed susceptibility to all the antifungals tested. One C. glabrata isolate showed multidrug resistance to itraconazole, amphotericin B and posaconazole and intermediate resistance to caspofungin. Results are congruent with both endogenous (C. albicans, C. glabrata) and exogenous (C. parapsilosis) infections; results also suggest two patients were infected by the same strain of C. parapsilosis. Continuing to work towards a better understanding of sources of infection-particularly the exogenous sources-would lead to targeted prevention strategies.


Assuntos
Candida/isolamento & purificação , Candidemia/sangue , Intestino Delgado/microbiologia , Adolescente , Adulto , Anfotericina B/uso terapêutico , Antifúngicos/uso terapêutico , Candida/classificação , Candida/efeitos dos fármacos , Candidemia/diagnóstico , Candidemia/tratamento farmacológico , Caspofungina , DNA Fúngico/genética , Farmacorresistência Fúngica , Equinocandinas/uso terapêutico , Feminino , Humanos , Intestino Delgado/transplante , Itraconazol/uso terapêutico , Lipopeptídeos/uso terapêutico , Masculino , Tipagem de Sequências Multilocus , Análise de Sequência de DNA , Transplantados , Triazóis/uso terapêutico , Adulto Jovem
13.
J Gen Virol ; 97(9): 2291-2300, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-27412790

RESUMO

Human noroviruses (HuNoVs) can often cause chronic infections in solid organ and haematopoietic stem cell transplant (HSCT) patients. Based on histopathological changes observed during HuNoV infections, the intestine is the presumed site of virus replication in patients; however, the cell types infected by HuNoVs remain unknown. The objective of this study was to characterize histopathological changes during HuNoV infection and to determine the cell types that may be permissive for HuNoV replication in transplant patients. We analysed biopsies from HuNoV-infected and non-infected (control) transplant patients to assess histopathological changes in conjunction with detection of HuNoV antigens to identify the infected cell types. HuNoV infection in immunocompromised patients was associated with histopathological changes such as disorganization and flattening of the intestinal epithelium. The HuNoV major capsid protein, VP1, was detected in all segments of the small intestine, in areas of biopsies that showed histopathological changes. Specifically, VP1 was detected in enterocytes, macrophages, T cells and dendritic cells. HuNoV replication was investigated by detecting the non-structural proteins, RdRp and VPg. We detected RdRp and VPg along with VP1 in duodenal and jejunal enterocytes. These results provide critical insights into histological changes due to HuNoV infection in immunocompromised patients and propose human enterocytes as a physiologically relevant cell type for HuNoV cultivation.


Assuntos
Biópsia , Infecções por Caliciviridae/virologia , Hospedeiro Imunocomprometido , Intestinos/virologia , Norovirus/isolamento & purificação , Transplantados , Antígenos Virais/análise , Infecções por Caliciviridae/patologia , Proteínas do Capsídeo/análise , Doença Crônica , Histocitoquímica , Humanos , Imuno-Histoquímica , Intestinos/patologia , Microscopia
14.
Am J Pathol ; 184(1): 101-9, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24200850

RESUMO

Human-specific HIV-1 and hepatitis co-infections significantly affect patient management and call for new therapeutic options. Small xenotransplantation models with human hepatocytes and hematolymphoid tissue should facilitate antiviral/antiretroviral drug trials. However, experience with mouse strains tested for dual reconstitution is limited, with technical difficulties such as risky manipulations with newborns and high mortality rates due to metabolic abnormalities. The best animal strains for hepatocyte transplantation are not optimal for human hematopoietic stem cell (HSC) engraftment, and vice versa. We evaluated a new strain of highly immunodeficient nonobese diabetic/Shi-scid (severe combined immunodeficiency)/IL-2Rγc(null) (NOG) mice that carry two copies of the mouse albumin promoter-driven urokinase-type plasminogen activator transgene for dual reconstitution with human liver and immune cells. Three approaches for dual reconstitution were evaluated: i) freshly isolated fetal hepatoblasts were injected intrasplenically, followed by transplantation of cryopreserved HSCs obtained from the same tissue samples 1 month later after treosulfan conditioning; ii) treosulfan conditioning is followed by intrasplenic simultaneous transplantation of fetal hepatoblasts and HSCs; and iii) transplantation of mature hepatocytes is followed by mismatched HSCs. The long-term dual reconstitution was achieved on urokinase-type plasminogen activator-NOG mice with mature hepatocytes (not fetal hepatoblasts) and HSCs. Even major histocompatibility complex mismatched transplantation was sustained without any evidence of hepatocyte rejection by the human immune system.


Assuntos
Coinfecção , Modelos Animais de Doenças , Transplante de Células-Tronco Hematopoéticas/métodos , Hepatócitos/transplante , Animais , Antineoplásicos Alquilantes/farmacologia , Bussulfano/análogos & derivados , Bussulfano/farmacologia , Infecções por HIV , Hepatite C , Humanos , Camundongos , Camundongos Endogâmicos NOD , Camundongos SCID , Camundongos Transgênicos , Transgenes , Ativador de Plasminogênio Tipo Uroquinase/genética
15.
J Pediatr ; 167(1): 29-34.e1, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25917765

RESUMO

OBJECTIVES: In a large cohort of children with intestinal failure (IF), we sought to determine the cumulative incidence of achieving enteral autonomy and identify patient and institutional characteristics associated with enteral autonomy. STUDY DESIGN: A multicenter, retrospective cohort analysis from the Pediatric Intestinal Failure Consortium was performed. IF was defined as severe congenital or acquired gastrointestinal diseases during infancy with dependence on parenteral nutrition (PN) >60 days. Enteral autonomy was defined as PN discontinuation >3 months. RESULTS: A total of 272 infants were followed for a median (IQR) of 33.5 (16.2-51.5) months. Enteral autonomy was achieved in 118 (43%); 36 (13%) remained PN dependent and 118 (43%) patients died or underwent transplantation. Multivariable analysis identified necrotizing enterocolitis (NEC; OR 2.42, 95% CI 1.33-4.47), care at an IF site without an associated intestinal transplantation program (OR 2.73, 95% CI 1.56-4.78), and an intact ileocecal valve (OR 2.80, 95% CI 1.63-4.83) as independent risk factors for enteral autonomy. A second model (n = 144) that included only patients with intraoperatively measured residual small bowel length found NEC (OR 3.44, 95% CI 1.36-8.71), care at a nonintestinal transplantation center (OR 6.56, 95% CI 2.53-16.98), and residual small bowel length (OR 1.04 cm, 95% CI 1.02-1.06 cm) to be independently associated with enteral autonomy. CONCLUSIONS: A substantial proportion of infants with IF can achieve enteral autonomy. Underlying NEC, preserved ileocecal valve, and longer bowel length are associated with achieving enteral autonomy. It is likely that variations in institutional practices and referral patterns also affect outcomes in children with IF.


Assuntos
Enteropatias/terapia , Nutrição Parenteral , Canadá/epidemiologia , Pré-Escolar , Estudos de Coortes , Enterocolite Necrosante/epidemiologia , Feminino , Seguimentos , Humanos , Valva Ileocecal , Lactente , Recém-Nascido , Enteropatias/epidemiologia , Intestinos/transplante , Masculino , Análise Multivariada , Estudos Retrospectivos , Fatores de Risco , Estados Unidos/epidemiologia
16.
J Wound Ostomy Continence Nurs ; 42(5): 549-53, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26336052

RESUMO

BACKGROUND: Enteric fistulas can be classified as enterocutaneous and/or enteroatmospheric. Both are devastating complications of bowel disease, abdominal surgery, and/or open abdomen. Enteric fistulas are associated with a mortality rate varying from 1% to 33%; the main cause of death is sepsis. Coordinated and skillful efforts of an interprofessional team are required in customizing successful treatment regimens appropriate to each patient's unique clinical scenario. CASE STUDY: A 65-year-old white woman experienced an enteroatmospheric fistula patient after ventral hernia repair. Care of this patient was based on the complementary relationship between professionals from 2 disciplines: the wound and ostomy continence nurse (WOC nurse) and the nutrition support registered dietitian/nutritionist. Working together, they developed a comprehensive wound, ostomy, and nutritional plan. Initially, the patient received parenteral nutrition exclusively. After the fistula tract was clearly defined, a feeding tube was placed into the distal limb of the fistula, and she received nourishment via a fistuloclysis (ie, enteral feedings administered via the fistula). A special wound management system was created to contain fistula output while allowing feeding through the distal limb of the fistula. CONCLUSION: Enterocutaneous and enteroatmospheric fistulas originating from the small bowel present a management challenge to the entire healthcare team. WOC nurses are often called upon to meet the challenge of maintaining skin health while promoting dignity and function. Nutrition support via registered dietitian/nutritionists play a critical role in managing the nutrition regimen for these patients. In this case, the use of fistuloclysis met the patient's nutritional needs while avoiding the risks associated with parenteral nutrition.


Assuntos
Fístula Intestinal/enfermagem , Fístula Intestinal/terapia , Apoio Nutricional/métodos , Idoso , Feminino , Humanos , Apoio Nutricional/enfermagem
17.
Biochem Biophys Res Commun ; 450(1): 773-6, 2014 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-24953695

RESUMO

Alcohol consumption exacerbates the course of hepatitis C viral (HCV) infection, worsens outcomes and contributes to the development of chronic infection that exhibits low anti-viral treatment efficiency. The lack of suitable in vivo models makes HCV-ethanol studies very difficult. Here, we examine whether chimeric SCID Alb-uPA mice transplanted with human hepatocytes and infected with HCV develop worsening pathology when fed ethanol. After 5 weeks of feeding, such mice fed chow+water (control) or chow+20% ethanol in water (EtOH) diets mice developed oxidative stress, decreased proteasome activity and increased steatosis. Importantly, HCV(+) mice in the control group cleared HCV RNA after 5 weeks, while the infection persisted in EtOH-fed mice at the same or even higher levels compared with pre-feeding HCV RNA. We conclude that in chimeric SCID Alb-uPA mice, EtOH exposure causes the complex biochemical and histological changes typical for alcoholic liver injury. In addition, ethanol feeding delays the clearance of HCV RNA thereby generating persistent infection and promoting liver injury. Overall, this model is appropriate for conducting HCV-ethanol studies.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas/patologia , Doença Hepática Induzida por Substâncias e Drogas/fisiopatologia , Modelos Animais de Doenças , Etanol , Hepatite C/patologia , Hepatite C/fisiopatologia , Animais , Hepatite C/induzido quimicamente , Humanos , Camundongos , Camundongos SCID , Substâncias Reativas com Ácido Tiobarbitúrico/metabolismo
18.
J Pediatr ; 164(1): 93-8, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24094877

RESUMO

OBJECTIVE: To analyze the effects of serial transverse enteroplasty (STEP) on parenteral and enteral calories in children with short bowel syndrome, and examine short- and long-term complications. STUDY DESIGN: A retrospective analysis of prospectively-collected data from a large single center cohort of patients undergoing STEP procedure was analyzed. Baseline demographic and clinical information, operative data, and short- and long-term complications were recorded. Detailed growth and nutritional data were obtained for 6 months prior and 12 months following STEP procedure. RESULTS: Sixty-eight procedures were performed in 51 patients over a 68-month period. Median bowel length at first STEP was 51 cm with a median length gain of 54%. Repeat STEP patients had longer initial length (77 cm) and reduced length gain (20%). Operative times and blood loss were low, with few complications. Parenteral calorie requirement was stable or rising for 6 months prior to STEP, but decreased to median <20 kCal/kg/d at 1 year postop. Longer length gains were associated with higher risk of stricture formation. Seven children were transplanted, and 60% of nontransplanted children were enterally independent, with the remainder making ongoing progress; 48/51 children are alive at a median of 39 months follow-up. CONCLUSIONS: STEP is shown to be safe, well tolerated, and to have definitive benefit in reducing parenteral calorie requirements over the first year following the procedure. It has an important role in achieving enteral independence in children with short bowel syndrome.


Assuntos
Procedimentos Cirúrgicos do Sistema Digestório/métodos , Ingestão de Energia , Nutrição Parenteral/métodos , Procedimentos de Cirurgia Plástica/métodos , Síndrome do Intestino Curto/terapia , Desmame , Feminino , Seguimentos , Humanos , Recém-Nascido , Masculino , Período Pós-Operatório , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento
19.
Anesthesiology ; 120(4): 829-38, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24496124

RESUMO

BACKGROUND: Much is still unknown about the actual incidence of anesthesia-related cardiac arrest in the United States. METHODS: The authors identified all of the cases of cardiac arrest from their quality improvement database from 1999 to 2009 and submitted them for review by an independent study commission to give them the best estimate of anesthesia-related cardiac arrest at their institution. One hundred sixty perioperative cardiac arrests within 24 h of surgery were identified from an anesthesia database of 217,365 anesthetics. An independent study commission reviewed all case abstracts to determine which cardiac arrests were anesthesia-attributable or anesthesia-contributory. Anesthesia-attributable cardiac arrests were those cases in which anesthesia was determined to be the primary cause of cardiac arrest. Anesthesia-contributory cardiac arrests were those cases where anesthesia was determined to have contributed to the cardiac arrest. RESULTS: Fourteen cardiac arrests were anesthesia-attributable, resulting in an incidence of 0.6 per 10,000 anesthetics (95% CI, 0.4 to 1.1). Twenty-three cardiac arrests were found to be anesthesia-contributory resulting in an incidence of 1.1 per 10,000 anesthetics (95% CI, 0.7 to 1.6). Sixty-four percent of anesthesia-attributable cardiac arrests were caused by airway complications that occurred primarily with induction, emergence, or in the postanesthesia care unit, and mortality was 29%. Anesthesia-contributory cardiac arrest occurred during all phases of the anesthesia, and mortality was 70%. CONCLUSION: As judged by an independent study commission, anesthesia-related cardiac arrest occurred in 37 of 160 cardiac arrests within the 24-h perioperative period.


Assuntos
Anestesia/efeitos adversos , Anestesia/estatística & dados numéricos , Parada Cardíaca/epidemiologia , Adolescente , Adulto , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Causalidade , Criança , Pré-Escolar , Bases de Dados Factuais/estatística & dados numéricos , Feminino , Parada Cardíaca/etiologia , Mortalidade Hospitalar , Humanos , Incidência , Lactente , Masculino , Pessoa de Meia-Idade , Distribuição por Sexo , Inquéritos e Questionários , Estados Unidos/epidemiologia , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA