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1.
J Pediatr ; 265: 113779, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37852433

RESUMO

OBJECTIVE: To describe 3-year post-neonatal intensive care unit (NICU) health care use among children with congenital anomalies discharged home from a level IV NICU. STUDY DESIGN: Retrospective chart review of children with congenital anomalies enrolled in a previous prospective cohort study from 201 to 2020. We assessed hospital readmission rate, number of surgeries, and durable medical equipment (DME) use by type of anomaly. RESULTS: Among 166 infants enrolled in the original study, 158 survived to NICU discharge. One-third of the cohort had a genetic anomaly. Six of 158 patients (4%) died before 3 years of age. More than one-half the children were readmitted within the first 2 years of life, and one-third were readmitted in the third year of life. Readmissions were greatest for those with multiple, musculoskeletal, and central nervous system anomalies and lowest for abdominal-wall defects. Approximately one-half the children underwent surgeries, and this proportion remained constant over the 3-year time. Sixty-two percent of patients received DME at discharge, with gastrostomy tubes being the most common. Gastrostomy tubes were still present in 75% of the patients at 3 years of age. CONCLUSION: Children with congenital anomalies are at risk for increased health care use during early childhood. Those with multiple anomalies, a genetic syndrome, musculoskeletal, and central nervous system anomalies and those discharged with DME are at greatest risk whereas those with abdominal-wall defects are at lowest risk. Provider awareness, high-quality discharge training, parent psychological support, greater assimilation of families in the NICU, and telehealth may be some strategies to better support these families.


Assuntos
Unidades de Terapia Intensiva Neonatal , Malformações do Sistema Nervoso , Recém-Nascido , Lactente , Criança , Humanos , Pré-Escolar , Estudos Retrospectivos , Estudos de Coortes , Aceitação pelo Paciente de Cuidados de Saúde
2.
Mol Breed ; 43(7): 54, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37337566

RESUMO

Septoria nodorum blotch (SNB) and tan spot, caused by the necrotrophic fungal pathogens Parastagonospora nodorum and Pyrenophora tritici-repentis, respectively, often occur together as a leaf spotting disease complex on wheat (Triticum aestivum L.). Both pathogens produce necrotrophic effectors (NEs) that contribute to the development of disease. Here, genome-wide association analysis of a diverse panel of 264 winter wheat lines revealed novel loci on chromosomes 5A and 5B associated with sensitivity to the NEs SnTox3 and SnTox5 in addition to the known sensitivity genes for NEs Ptr/SnToxA, SnTox1, SnTox3, and SnTox5. Sensitivity loci for SnTox267 and Ptr ToxB were not detected. Evaluation of the panel with five P. nodorum isolates for SNB development indicated the Snn3-SnTox3 and Tsn1-SnToxA interactions played significant roles in disease development along with additional QTL on chromosomes 2A and 2D, which may correspond to the Snn7-SnTox267 interaction. For tan spot, the Tsc1-Ptr ToxC interaction was associated with disease caused by two isolates, and a novel QTL on chromosome 7D was associated with a third isolate. The Tsn1-ToxA interaction was associated with SNB but not tan spot. Therefore some, but not all, of the previously characterized host gene-NE interactions in these pathosystems play significant roles in disease development in winter wheat. Based on these results, breeders should prioritize the selection of resistance alleles at the Tsc1, Tsn1, Snn3, and Snn7 loci as well as the 2A and 7D QTL to obtain good levels of resistance to SNB and tan spot in winter wheat. Supplementary Information: The online version contains supplementary material available at 10.1007/s11032-023-01400-5.

3.
J Pediatr ; 245: 39-46.e2, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35151681

RESUMO

OBJECTIVE: To examine factors associated with parent quality of life during and after neonatal intensive care unit (NICU) discharge among parents of infants with congenital anomalies admitted to the NICU. STUDY DESIGN: This secondary analysis of 2 prospective cohort studies between 2016 and 2020 at a level IV NICU included parents of infants with major congenital anomalies receiving NICU care. The primary outcomes were parent health-related quality of life (HRQL) during the NICU stay and at 3 months post-NICU discharge. RESULTS: A total of 166 parent-infant dyads were enrolled in the study, 124 of which completed the 3-month follow-up interview. During the NICU stay, parent history of a mental health disorder (-13 points), earlier gestational age (-17 points), consultation by multiple specialists (-11 points), and longer hospital stay (-5 points) were associated with lower HRQL. Parents of infants with a neonatal surgical anomaly had higher HRQL (+4 points). At 3 months after NICU discharge, parent receipt of a psychology consult in the NICU, the total number of consultants involved in the child's care, and an infant with a nonsurgical anomaly were associated with lower parent HRQL. Parents of infants with a gastrostomy tube (-6 points) and those with hospital readmission (-5 points) had lower HRQL. Comparing same-parent differences in HRQL over time, parents of infants with anomalies did not show significant improvement in HRQL on discharge home. CONCLUSION: Parents of infants with congenital anomalies reported low HRQL at baseline and at discharge. Parents of infants with nonsurgical, medically complex anomalies requiring multispecialty care represent a vulnerable group who could be better supported during and after their NICU stay.


Assuntos
Terapia Intensiva Neonatal , Qualidade de Vida , Criança , Humanos , Lactente , Recém-Nascido , Unidades de Terapia Intensiva Neonatal , Pais/psicologia , Estudos Prospectivos
4.
Am J Perinatol ; 2022 May 12.
Artigo em Inglês | MEDLINE | ID: mdl-35553040

RESUMO

OBJECTIVE: The effect of gestational age (GA) on gastroschisis outcomes is unclear and delivery timing varies in practice. We aimed to correlate clinical outcomes of infants with gastroschisis and GA at delivery in the Children's Hospitals Neonatal Consortium (CHNC). STUDY DESIGN: This was a retrospective multicenter cohort study of infants with gastroschisis admitted to CHNC neonatal intensive care units (NICUs) from 2010 to 2016. Patients were categorized by GA: 32 to 346/7, 35 to 366/7, and ≥37 weeks. Respiratory and feeding interventions, mortality, length of stay, and common complications were compared. RESULTS: In 2021 for patients with gastroschisis, median GA at delivery was 36.3 weeks (interquartile range [IQR] 35.1, 37.3) and mean birth weight 2,425 g (IQR 2,100, 2,766). Overall mortality was low and there was no difference across GA groups. Infants <35 weeks' gestation had the greatest need for respiratory and feeding interventions. Complications such as medical necrotizing enterocolitis (NEC), cholestasis, and central line-associated blood stream infection were less common in infants ≥37 weeks. Feeding initiation and full feeds were earliest in term infants, compared with infants between 35 and 366/7 weeks, and longest in infants <35 weeks. Prematurity had a significant negative association with breast milk exposure. Enteral feeding tube support at discharge increased with prematurity. Compared with term, infants born between 35 and 366/7 weeks' gestation had a higher incidence of medical NEC and lower exposure to mother's milk at discharge but the need for respiratory interventions or tube feeding at discharge was similar. CONCLUSION: Premature infants with gastroschisis had more neonatal complications including respiratory interventions, longer NICU stay, longer time to full enteral feeds, and higher need for tube feeds at discharge as compared with those delivered at term. Differences were greatest for those <35 weeks GA. While overall mortality remains low, these results provide additional information about GA at birth in gastroschisis, with no evidence of benefit from preterm delivery. KEY POINTS: · Respiratory support was greatest for those with <35 weeks gestation.. · NEC and cholestasis increase with prematurity.. · Term infants have better feeding outcomes..

5.
J Pediatr ; 234: 38-45.e2, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33789159

RESUMO

OBJECTIVE: To compare healthcare use and parent health-related quality of life (HRQL) in 3 groups of infants whose neonatal intensive care unit (NICU) discharge was delayed by oral feedings. STUDY DESIGN: This was a prospective, single-center cohort of infants in the NICU from September 2018 to March 2020. After enrollment, weekly chart review determined eligibility for home nasogastric (NG) feeds based on predetermined criteria. Actual discharge feeding decisions were at clinical discretion. At 3 months' postdischarge, we compared acute healthcare use and parental HRQL, measured by the PedsQL Family Impact Module, among infants who were NG eligible but discharged with all oral feeds, discharged with NG feeds, and discharged with gastrostomy (G) tubes. We calculated NICU days saved by home NG discharges. RESULTS: Among 180 infants, 80 were orally fed, 35 used NG, and 65 used G tubes. Compared with infants who had NG-tube feedings, infants who had G-tube feedings had more gastrointestinal or tube-related readmissions and emergency encounters (unadjusted OR 3.97, 95% CI 1.3-12.7, P = .02), and orally-fed infants showed no difference in use (unadjusted OR 0.41, 95% CI 0.1-1.7, P = .225). Multivariable adjustment did not change these comparisons. Parent HRQL at 3 months did not differ between groups. Infants discharged home with NG tubes saved 1574 NICU days. CONCLUSIONS: NICU discharge with NG feeds is associated with reduced NICU stay without increased postdischarge healthcare use or decreased parent HRQL, whereas G-tube feeding was associated with increased postdischarge healthcare use.


Assuntos
Assistência ao Convalescente/estatística & dados numéricos , Intubação Gastrointestinal/métodos , Pais/psicologia , Qualidade de Vida , Humanos , Lactente , Lactente Extremamente Prematuro , Recém-Nascido , Unidades de Terapia Intensiva Neonatal/organização & administração , Intubação Gastrointestinal/efeitos adversos , Tempo de Internação/estatística & dados numéricos , Estudos Prospectivos , Inquéritos e Questionários
6.
Plant Dis ; 105(4): 764-769, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33074070

RESUMO

Microplot experiments were conducted to evaluate the effects of cover crops on population reduction of a major soybean pest, soybean cyst nematode (SCN; Heterodera glycines Ichinohe) in 2016 and 2017. Ten crop species, including annual ryegrass (Lolium multiflorum L.), Austrian winter pea (Pisum sativum L. subsp. arvense), carinata (Brassica carinata A. Braun), faba bean (Vicia faba Roth), foxtail millet (Setaria italica (L.) P. Beauvois), daikon radish (Raphanus sativus L.), red clover (Trifolium pratense L.), sweetclover (Melilotus officinalis L.), turnip (Brassica rapa subsp. rapa L.), and winter rye (Secale cereale L.), were planted along with susceptible soybean (Glycine max (L.) Merr. 'Barnes') in soil naturally infested with each of two SCN populations (SCN103 and SCN2W) from two North Dakota soybean fields. Crops were grown in large plastic pots for 75 days in an outdoor environment (microplot). Soil samples were collected from each pot for nematode extraction and SCN eggs were counted to determine the final SCN egg density. The population reduction was determined for each crop and nonplanted natural soil (fallow). All of the tested crops and nonplanted natural soil had significantly (P < 0.0001) lower final population densities compared with susceptible soybean (Barnes). Also, a significant difference (P < 0.0001) was observed between the SCN population suppressions caused by cover crops versus the fallow treatment. All cover crops except Austrian winter pea, carinata, faba bean, and foxtail millet had consistently lower SCN egg numbers than in fallow in both years of the experiments. The average population reductions of SCN by the cover crops ranged from 44 to 67% in comparison with the initial population density, while the fallow had natural reductions from 4 to 24%. Annual ryegrass and daikon radish reduced SCN egg numbers to a greater extent than the other cover crops, with an average of 65 and 67% reduction of initial population density, respectively, from 2 years. The results suggested that cover crops reduced the SCN populations in external microplot conditions, and their use has great potential for improving SCN management in infested fields.


Assuntos
Cistos , Tylenchoidea , Animais , Produtos Agrícolas , North Dakota , Glycine max
7.
Prenat Diagn ; 40(5): 538-548, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31913526

RESUMO

OBJECTIVE: In pregnancies complicated by multiple fetal abnormalities, our objective was to determine the degree of concordance between prenatal prognosis and postnatal outcomes. METHOD: Retrospective cohort study of pregnancies with multiple fetal abnormalities referred to the Fetal Concerns Center of Wisconsin (FCCW) from 2015 to 2018. We reviewed records for anomalies, given prognostic severity, and postnatal outcomes. Prognostic severity was categorized as "likely mortality," "severe impairment," "moderate," and "mild" based on predetermined criteria. RESULTS: In 85 pregnancies with multiple fetal abnormalities, 48% were given a prognosis of "likely mortality," and 19% were given a prognosis of "severe impairment." In pregnancies that were continued after being counseled as "likely mortality," this outcome was concordant in all but one case, despite medical interventions. In pregnancies counseled as "severe impairment," the more common outcome was mortality or severe impairment in 88% of cases and survival with severe impairment in 33% of cases. Postnatal outcomes were concordant with prenatal severity in 68% of the cases, more severe in 20% of the cases, and less severe in fewer than 5% of cases. CONCLUSION: Prenatal predictions about severe outcomes are usually true in pregnancies complicated by multiple abnormalities. In cases of outcome discordance, outcomes tend to be more severe than predicted.


Assuntos
Anormalidades Múltiplas/mortalidade , Aborto Induzido , Aconselhamento , Cuidados Paliativos , Cuidado Pré-Natal , Anormalidades Múltiplas/fisiopatologia , Estudos de Coortes , Feminino , Humanos , Lactente , Gravidez , Diagnóstico Pré-Natal , Prognóstico , Estudos Retrospectivos , Índice de Gravidade de Doença
8.
J Chem Phys ; 152(12): 124713, 2020 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-32241141

RESUMO

The use of the varied chemical reactivity of precursors to drive the production of a desired nanocrystal architecture has become a common method to grow thick-shell graded alloy quantum dots (QDs) with robust optical properties. Conclusions on their behavior assume the ideal chemical gradation and uniform particle composition. Here, advanced analytical electron microscopy (high-resolution scanning transmission electron microscopy coupled with energy dispersive spectroscopy) is used to confirm the nature and extent of compositional gradation and these data are compared with performance behavior obtained from single-nanocrystal spectroscopy to elucidate structure, chemical-composition, and optical-property correlations. Specifically, the evolution of the chemical structure and single-nanocrystal luminescence was determined for a time-series of graded-alloy "CdZnSSe/ZnS" core/shell QDs prepared in a single-pot reaction. In a separate step, thick (∼6 monolayers) to giant (>14 monolayers) shells of ZnS were added to the alloyed QDs via a successive ionic layer adsorption and reaction (SILAR) process, and the impact of this shell on the optical performance was also assessed. By determining the degree of alloying for each component element on a per-particle basis, we observe that the actual product from the single-pot reaction is less "graded" in Cd and more so in Se than anticipated, with Se extending throughout the structure. The latter suggests much slower Se reaction kinetics than expected or an ability of Se to diffuse away from the initially nucleated core. It was also found that the subsequent growth of thick phase-pure ZnS shells by the SILAR method was required to significantly reduce blinking and photobleaching. However, correlated single-nanocrystal optical characterization and electron microscopy further revealed that these beneficial properties are only achieved if the thick ZnS shell is complete and without large lattice discontinuities. In this way, we identify the necessary structural design features that are required for ideal light emission properties in these green-visible emitting QDs.

9.
Adv Neonatal Care ; 20(3): 204-215, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31996562

RESUMO

BACKGROUND: Families with a prenatal diagnosis of trisomy 13 or 18 are told many things, some true and some myths. They present with differing choices on how to proceed that may or may not be completely informed. PURPOSE: To provide the prenatal counselor with a review of the pertinent obstetrical and neonatal outcome data and ethical discussion to help them in supporting families with the correct information for counseling. METHODS/SEARCH STRATEGY: This article provides a review of the literature on facts and myths and provides reasonable outcome data to help families in decision making. FINDINGS/RESULTS: These disorders comprise a heterogeneous group regarding presentation, outcomes, and parental goals. The authors maintain that there needs to be balanced decision-making between parents and providers for the appropriate care for the woman and her infant. IMPLICATIONS FOR PRACTICE: Awareness of this literature can help ensure that prenatal and palliative care consultation incorporates the appropriate facts and parental values and in the end supports differing choices that can support the infant's interests.


Assuntos
Aconselhamento , Cuidados Paliativos , Pais/psicologia , Diagnóstico Pré-Natal , Síndrome da Trissomia do Cromossomo 13 , Síndrome da Trissomía do Cromossomo 18 , Aconselhamento/ética , Aconselhamento/métodos , Tomada de Decisão Compartilhada , Feminino , Humanos , Recém-Nascido , Cuidados Paliativos/ética , Cuidados Paliativos/métodos , Cuidados Paliativos/psicologia , Gravidez , Diagnóstico Pré-Natal/métodos , Diagnóstico Pré-Natal/psicologia , Sistemas de Apoio Psicossocial , Síndrome da Trissomia do Cromossomo 13/diagnóstico , Síndrome da Trissomia do Cromossomo 13/psicologia , Síndrome da Trissomia do Cromossomo 13/terapia , Síndrome da Trissomía do Cromossomo 18/diagnóstico , Síndrome da Trissomía do Cromossomo 18/psicologia , Síndrome da Trissomía do Cromossomo 18/terapia
10.
J Pediatr ; 213: 38-45.e3, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-31256914

RESUMO

OBJECTIVE: To determine how infant illness and parent demographics are associated with parent health-related quality of life (HRQL) during and 3 months after hospitalization in the neonatal intensive care unit (NICU). We hypothesized that parents of extremely preterm infants would report lower NICU HRQL than other parents, and that all parents would report improved HRQL after discharge. STUDY DESIGN: This prospective study of parent-infant dyads admitted to a level IV NICU for ≥14 days from 2016 to 2017 measured parent HRQL before and 3 months after discharge using the Pediatric Quality of Life Inventory Family Impact Module. Multivariable regression was used to identify risk factors associated with HRQL differences during hospitalization and after discharge. RESULTS: Of the 194 dyads, 167 (86%) completed the study (24% extremely preterm; 53% moderate to late preterm; 22% term). During the NICU hospitalization, parents of extremely preterm infants reported lower adjusted HRQL (-7 points; P = .013) than other parents. After discharge, parents of extremely preterm infants reported higher HRQL compared with their NICU score (+10 points; P = .001). Tracheostomy (-13; P = .006), home oxygen (-6; P = .022), and readmission (-5; P = .037) were associated with lower parent HRQL 3 months after discharge, adjusted for NICU HRQL score. CONCLUSIONS: Parents of extremely preterm infants experienced a greater negative impact on HRQL during the NICU hospitalization and more improvement after discharge than parents of other infants hospitalized in the NICU. Complex home care was associated with lower parent HRQL after discharge. The potential benefit of home discharge should be balanced against the potential negative impact of complex home care.


Assuntos
Hospitalização , Doenças do Prematuro/terapia , Unidades de Terapia Intensiva Neonatal , Pais/psicologia , Qualidade de Vida , Adulto , Feminino , Humanos , Lactente Extremamente Prematuro , Recém-Nascido , Doenças do Prematuro/psicologia , Masculino , Estudos Prospectivos , Adulto Jovem
11.
J Am Chem Soc ; 137(11): 3755-8, 2015 Mar 25.
Artigo em Inglês | MEDLINE | ID: mdl-25746140

RESUMO

Core/thick-shell giant quantum dots (gQDs) possessing type II electronic structures exhibit suppressed blinking and diminished nonradiative Auger recombination. We investigate CdSe/ZnSe and ZnSe/CdS as potential new gQDs. We show theoretically and experimentally that both can exhibit partial or complete spatial separation of an excited-state electron-hole pair (i.e., type II behavior). However, we reveal that thick-shell growth is challenged by competing processes: alloying and cation exchange. We demonstrate that these can be largely avoided by choice of shelling conditions (e.g., time, temperature, and QD core identity). The resulting CdSe/ZnSe gQDs exhibit unusual single-QD properties, principally emitting from dim gray states but having high two-exciton (biexciton) emission efficiencies, whereas ZnSe/CdS gQDs show characteristic gQD blinking suppression, though only if shelling is accompanied by partial cation exchange.

13.
J Perinatol ; 2024 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-38744936

RESUMO

OBJECTIVE: To examine neonatal outcomes of infants with gastroschisis born <32 weeks' gestation compared to matched infants without gastroschisis. STUDY DESIGN: Retrospective matched-cohort analysis of infants with gastroschisis born <32 weeks' gestation at Children's Hospitals Neonatal Consortium (CHNC) NICUs from 2010 to 2022 compared to gestational age-matched controls. RESULTS: The study included 119 infants with gastroschisis and 357 matched infants; 60% of infants born 29-32 weeks, 23% born 26-28 weeks, and 16% born < 25 weeks. Mortality was not significantly different between groups (11% vs. 9%, p = 0.59). Preterm co-morbidities such as IVH, BPD, ROP, and PVL were similar, as were rates of surgical NEC. Infants with gastroschisis had longer hospital stays (92 vs. 67 days), higher CLABSI and UTIs, and were more likely to need feeding support at discharge. CONCLUSION: Compared to infants without gastroschisis, infants <32 weeks' gestation with gastroschisis had similar risks for inpatient mortality, NEC, and other preterm co-morbidities.

14.
Infect Dis Poverty ; 13(1): 28, 2024 Apr 12.
Artigo em Inglês | MEDLINE | ID: mdl-38610035

RESUMO

BACKGROUND: Despite the increasing focus on strengthening One Health capacity building on global level, challenges remain in devising and implementing real-world interventions particularly in the Asia-Pacific region. Recognizing these gaps, the One Health Action Commission (OHAC) was established as an academic community for One Health action with an emphasis on research agenda setting to identify actions for highest impact. MAIN TEXT: This viewpoint describes the agenda of, and motivation for, the recently formed OHAC. Recognizing the urgent need for evidence to support the formulation of necessary action plans, OHAC advocates the adoption of both bottom-up and top-down approaches to identify the current gaps in combating zoonoses, antimicrobial resistance, addressing food safety, and to enhance capacity building for context-sensitive One Health implementation. CONCLUSIONS: By promoting broader engagement and connection of multidisciplinary stakeholders, OHAC envisions a collaborative global platform for the generation of innovative One Health knowledge, distilled practical experience and actionable policy advice, guided by strong ethical principles of One Health.


Assuntos
Saúde Única , Animais , Ásia , Fortalecimento Institucional , Políticas , Zoonoses/prevenção & controle
15.
CMAJ ; 190(49): E1454-E1455, 2018 12 10.
Artigo em Inglês | MEDLINE | ID: mdl-31002641
16.
Trans R Soc Trop Med Hyg ; 117(6): 435-443, 2023 06 02.
Artigo em Inglês | MEDLINE | ID: mdl-36611273

RESUMO

BACKGROUND: Snakebite is a neglected public health issue in Nepal. We aimed to characterize patients with snake envenoming admitted to hospital in south-western Nepal. METHODS: This was a prospective cohort study of 476 snakebite patients admitted to Bheri Hospital from May to December 2017. Data were collected on patient demographics, bite circumstances, snake type, treatment-seeking behavior, clinical effects, complications and treatment. RESULTS: There were 139/476 (29%) patients with clinical features of envenomation and 10 deaths (8%), of which six were prehospital deaths; 325/476 (68%) patients used non-recommended prehospital first aid, including 278 (58%) who applied a tourniquet and 43 (9%) consulting traditional healers. Median time to hospital arrival was 1.5 (IQR: 0.8-4) h. Also, 127 envenomated patients (91%) developed neurotoxicity and 12 (9%) hemotoxicity, while 124 patients (89%) received antivenom, with a median dose of 10 (4-30) vials. Three patients developed anaphylaxis following antivenom administration; 111 of 139 (80%) cases were admitted to the ICU and 48 (35%) were intubated. Median length of hospital stay for all cases was 0.5 (IQR: 0.5-1.2) d, but it was 2.2 (IQR: 1.5-3.8) d for envenomated cases. CONCLUSIONS: The majority of snakebite patients used non-recommended first aid or attended traditional healers. Almost one-third of patients developed systemic envenomation and required antivenom. The case fatality rate was high, but many died prior to arriving in hospital.


Assuntos
Mordeduras de Serpentes , Humanos , Animais , Mordeduras de Serpentes/complicações , Mordeduras de Serpentes/epidemiologia , Mordeduras de Serpentes/terapia , Antivenenos/uso terapêutico , Estudos Prospectivos , Nepal/epidemiologia , Centros de Atenção Terciária , Venenos de Serpentes , Serpentes
17.
Nat Commun ; 14(1): 5819, 2023 09 20.
Artigo em Inglês | MEDLINE | ID: mdl-37730734

RESUMO

Benefits of breastfeeding for both the mother and the child are well established, but a comprehensive and robust study to investigate the protective effect of breastfeeding and attenuated time effect stratified by cause of morbidity are lacking. This study is based on the nationwide birth cohort in Korea that includes data on all infants born from 2009 to 2015. Of 1,608,540 children, the median follow-up period was 8.41 years (interquartile range, 6.76-10.06). When compared to children with fully formula feeding, the hospital admission rate was 12% lower in those with partially breastfeeding and 15% lower in those with exclusive breastfeeding. The apparent protective effect of breastfeeding was reduced with increasing age. Our study provides potential evidence of the beneficial association of breastfeeding on subsequent hospital admissions. The protective effect declined over time as the children grew older. Encouraging any breastfeeding for at least the first 6 months among infants is an important public health strategy to improve overall child health.


Assuntos
Coorte de Nascimento , Aleitamento Materno , Criança , Lactente , Feminino , Humanos , República da Coreia/epidemiologia , Saúde da Criança , Hospitais
20.
Nano Lett ; 11(7): 2919-26, 2011 Jul 13.
Artigo em Inglês | MEDLINE | ID: mdl-21615085

RESUMO

The effect of hole localization on photocatalytic activity of Pt-tipped semiconductor nanocrystals is investigated. By tuning the energy balance at the semiconductor-ligand interface, we demonstrate that hydrogen production on Pt sites is efficient only when electron-donating molecules are used for stabilizing semiconductor surfaces. These surfactants play an important role in enabling an efficient and stable reduction of water by heterostructured nanocrystals as they fill vacancies in the valence band of the semiconductor domain, preventing its degradation. In particular, we show that the energy of oxidizing holes can be efficiently transferred to a ligand moiety, leaving the semiconductor domain intact. This allows reusing the inorganic portion of the "degraded" nanocrystal-ligand system simply by recharging these nanoparticles with fresh ligands.


Assuntos
Hidrogênio/química , Nanopartículas/química , Platina/química , Nanotecnologia , Tamanho da Partícula , Semicondutores , Propriedades de Superfície
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