Abstract:
BACKGROUND/PURPOSE:Collagen and elastin, the predominant components of the lung connective tissue network, have been suggested to have an important influence on lung compliance and maximal expansion. Decrease in lung compliance and distensibility often is seen in human congenital diaphragmatic hernia (CDH) lung as well as in experimentally produced CDH lung. The aim of this study was to investigate mRNA levels of tropoelastin and alpha1 (I) procollagen, the precursors of elastin, and type I collagen, respectively, in CDH lung and to determine whether antenatal dexamethasone treatment has any effect on the production of these extracellular matrix proteins. METHODS:CDH model was induced in pregnant rats after administration of 100 mg nitrofen on day 9.5 of gestation (term, 22 days). Dexamethasone (0.25 mg/kg) was given on day 18.5 and 19.5. Cesarean section was performed on day 21. The fetuses were divided into three groups: group I, normal controls; group II, nitrofen-induced CDH; and group III, nitrofen-induced CDH with antenatal dexamethasone treatment. Reverse transcription-polymerase chain reaction (RT-PCR) was performed to evaluate relative amounts of tropoelastin and alpha1 (I) procollagen mRNA. RESULTS:Levels of both tropoelastin and alpha1 (I) procollagen mRNA were significantly increased in group II compared with group I (P< .05). Neither tropoelastin nor alpha1 (I) procollagen mRNA levels were significantly different between group II and III. CONCLUSIONS:The increased local synthesis of tropoelastin and type I procollagen in CDH lung may be responsible for the increased rigidity and decreased compliance observed in the CDH hypoplastic lung. Glucocorticoids have no effect on pulmonary tropoelastin and alpha1 (I) procollagen gene expression in CDH lungs.
journal_name
J Pediatr Surgjournal_title
Journal of pediatric surgeryauthors
Taira Y,Oue T,Shima H,Miyazaki E,Puri Pdoi
10.1016/s0022-3468(99)90362-7subject
Has Abstractpub_date
1999-05-01 00:00:00pages
715-9issue
5eissn
0022-3468issn
1531-5037pii
S0022-3468(99)90362-7journal_volume
34pub_type
杂志文章abstract::Lung scanning using solubilized xenon 133 can provide important information concerning both pulmonary perfusion and ventilation. This technique proved valuable in establishing the diagnosis of congenital lobar emphysema in a 7-month-old baby. ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(88)80005-8
更新日期:1988-11-01 00:00:00
abstract:BACKGROUND:We examine the mechanism of aortic lengthening in a novel rodent model of tissue expander stimulated lengthening of arteries (TESLA). METHODS:A rat model of TESLA was examined with a single stretch stimulus applied at the time of tissue expander insertion with evaluation of the aorta at 2, 4 and 7day time p...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2015.09.008
更新日期:2016-04-01 00:00:00
abstract::The resting membrane potential (RMP) of skeletal muscle cells was investigated in a hyperdynamic animal model of sepsis. Reduced membrane potential is known to parallel the clinical course of sepsis and hemorrhagic shock in animal models. Pentoxifylline (PTF), a dimethyl xanthine derivative of the theophylline family,...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(93)90150-j
更新日期:1993-09-01 00:00:00
abstract:BACKGROUND:Persistent hyperinsulinemic hypoglycemia of infancy (PHHI) is considered the most common cause of persistent neonatal hypoglycemia. Management of PHHI involves use of medical agents and its failure is an indication of surgical intervention. Traditionally, an open pancreatectomy was the standard of care but r...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2008.10.120
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND:Clinical reports of ethanol-lock use for the prevention of catheter-related bloodstream infections have been marked by the occurrence of serious catheter occlusions, particularly among children with mediports. We hypothesized that precipitate forms when ethanol mixes with heparin at the concentrations releva...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2014.07.003
更新日期:2015-03-01 00:00:00
abstract:BACKGROUND:As the use of inhaled nitric oxide (iNO) resulted in a decline in the need for extracorporeal membrane oxygenation (ECMO) in neonates with hypoxic respiratory failure, iNO has become an accepted treatment modality even in non-ECMO centers. However, because not all neonates respond to iNO, the timely identifi...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2005.03.061
更新日期:2005-07-01 00:00:00
abstract:BACKGROUND/PURPOSE:American pediatric surgical education has more than a 65-year history of formalizing the organization and the curriculum of the training process. However, never before have so many simultaneous internal and external forces appeared on the horizon that have the collective potential of influencing the ...
journal_title:Journal of pediatric surgery
pub_type: 历史文章,杂志文章
doi:10.1016/j.jpedsurg.2004.04.002
更新日期:2004-08-01 00:00:00
abstract::We modified conventional hepatic portoenterostomy by pulling the remnant fibrous mass caudally and placing 5 or 6 numbered and individually clamped absorbable 5-0 double-needle sutures horizontally in the liver surface of the posterior side of the remnant fibrous mass before excision and apposing the posterior and ant...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2005.12.056
更新日期:2006-05-01 00:00:00
abstract:BACKGROUND/PURPOSE:Fulminant necrotizing enterocolitis (NEC) may result in extensive bowel necrosis. Resection of involved segments may result in short bowel syndrome. Multiple stomas result in complications and further loss of intestinal length with closure. METHODS:Two patients with extensive multisegmental NEC were...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(00)90004-6
更新日期:2000-02-01 00:00:00
abstract::From 1958 to March 1987 we corrected 704 patients with pectus excavatum. The condition occurred more frequently in boys (544 patients) than girls (160 patients). In the majority of patients (86%), the defect was evident at birth or within the first year of life. Musculoskeletal abnormalities were identified in 133 pat...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(88)80629-8
更新日期:1988-07-01 00:00:00
abstract:BACKGROUND/PURPOSE:Previous clinical practice has included evaluation for the presence of tethered cord in those children who have imperforate anus with a high lesion. To define the incidence in children with low lesions, the authors reviewed their experience with a protocol employing routine magnetic resonance imaging...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1053/jpsu.2002.33817
更新日期:2002-07-01 00:00:00
abstract::The plan for cervical lymph node biopsy should include special maneuvers for recognition of patients with lymphadenitis due to atypical mycobacteria, since these children need extensive operations. The diagnosis should be suspected in children less than 3 yr old with lymphadenopathy present for several months and no e...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(82)80116-4
更新日期:1982-10-01 00:00:00
abstract::Agenesis of the dorsal mesentery in association with jejunal atresia is a well-recognized congenital anomaly. Only few reports exist in the English literature of children with agenesis of the dorsal mesentery without small bowel atresia. Herein, we report a child with total mesenteric agenesis presenting with midgut v...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2006.05.011
更新日期:2006-09-01 00:00:00
abstract:PURPOSE:The Bethesda classification for cytology is used to classify thyroid nodules into one of six categories, and for each category there is an implied cancer risk and also recommendation for management. Despite lack of data in children, the American thyroid association promotes the use of the same management guidel...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jpedsurg.2014.10.046
更新日期:2015-07-01 00:00:00
abstract::Polyorchidism is an uncommon congenital anomaly, defined as the presence of more than 2-histologically proven-testes. Approximately 90 cases are reported in the literature. It is found predominantly on the left side. We report a right-sided polyorchidism found during orchidopexy in a 6-year-old boy. The supernumerary ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2007.07.031
更新日期:2007-11-01 00:00:00
abstract::Congenital diaphragmatic hernia (CDH) continues to be one of the most challenging problems in pediatric surgery. The overall mortality rate remains at 40%, and death is caused by pulmonary hypoplasia and persistent pulmonary hypertension. It has been suggested that in utero repair of the defect should be performed to ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(95)90511-1
更新日期:1995-09-01 00:00:00
abstract::A method of back closure with the use of latissimus dorsi myocutaneous flap in cases of myelomeningocele is reported. A three-layer cover consisting of the skin, subcutaneous fat, and the muscle with proper innervation and blood supply of the flap permits successful closure of large defects. Well-vascularized coverage...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(92)90110-s
更新日期:1992-01-01 00:00:00
abstract:BACKGROUND:A 12-year-old girl presenting with intermittent epigastric pains and diarrhea was referred to our clinic. Diagnostic workup revealed nonfunctional bilateral adrenal pheochromocytomas as well as a neuroendocrine tumor of the pancreatic head. This is the first report on the combination of a neuroendocrine panc...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2007.02.029
更新日期:2007-07-01 00:00:00
abstract:BACKGROUND:Hyperparathyroidism (HPT) in children is rare and surgical management is supported only by limited evidence. METHODS:Retrospective case series of all children under the age of 16 years who underwent parathyroidectomy (PTx) between 1978 and 2012. RESULTS:We identified 29 children who had surgery for HPT. Si...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2014.05.032
更新日期:2014-11-01 00:00:00
abstract:PURPOSE:Multiple visits for the evaluation, treatment, and follow-up of straightforward surgical problems are inconvenient, can result in lost work for the parents, and missed school for the child. We hypothesized that with proper previsit screening, patients with select diagnoses can be evaluated in an outpatient clin...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2011.10.047
更新日期:2012-01-01 00:00:00
abstract::Traumatic splanchnic artery pseudo-aneurysms are uncommon; only two cases have been reported among the pediatric population. The authors describe their experience with four patients in whom splanchnic artery pseudoaneurysms developed after blunt abdominal trauma. Splenic artery pseudo-aneurysms were found in a 6-year-...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(96)90140-2
更新日期:1996-06-01 00:00:00
abstract:BACKGROUND:The infectious risk of central venous line (CVL) placement in children with neutropenia (absolute neutrophil count [ANC] <500/mm3) is not well defined. This study aims to investigate the early (≤30 days) and late (>30 days) infectious complications of CVLs placed in pediatric patients with and without neutro...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2019.08.005
更新日期:2020-07-01 00:00:00
abstract:BACKGROUND/PURPOSE:A randomised controlled trial evaluating the role of video-assisted thoracoscopic surgery (VATS) in childhood empyema reported a failure rate of 16.6%. Our aim is to determine the outcome of VATS in a large series of children managed by 3 paediatric surgeons experienced in endoscopic surgery. METHOD...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2008.10.083
更新日期:2009-02-01 00:00:00
abstract::Ten surgical neonates with postoperative intractable diarrhea and secondary weight loss were treated with combination cholestyramine and paregoric therapy. Within 3-5 days all infants except two showed significant clinical improvement with a decreasing number of stools, an increase in the consistency of the stool, and...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(76)90105-6
更新日期:1976-10-01 00:00:00
abstract:BACKGROUND/PURPOSE:We compared direct hospital costs and indirect costs to the family associated with immediate appendectomy or initial nonoperative management for perforated appendicitis in children. METHODS:From June 2009 through May 2010, 61 prospectively identified families completed a cost diary, documenting the ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2012.03.024
更新日期:2012-06-01 00:00:00
abstract:BACKGROUND:A reliable metric of technical proficiency is indispensable to the training of fellows and residents. The purpose of this study was to determine whether cumulative sum (Cusum) has predictive validity in laparoscopic training. We hypothesized that Cusum would be a better predictor of technical ability in fund...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2015.10.049
更新日期:2016-04-01 00:00:00
abstract::The capacity of fetal and newborn hepatic macrophages to produce cachectin/tumor necrosis factor (TNF) has not been previously examined. The role that TNF plays in newborn infection is also unknown. In the present report, fetal and newborn rat hepatic macrophages have been maintained in short-term tissue culture, and ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(89)80296-9
更新日期:1989-01-01 00:00:00
abstract::An instance of fibrous hamartoma of infancy (FHI) in the perianal region of an 8-mo-old infant, a hitherto unreported location, is described. The majority of the reported cases occur in the torso and upper extremities. The differential diagnostic features which aid differentiating FHI from other conditions is discusse...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(79)80582-5
更新日期:1979-02-01 00:00:00
abstract:PURPOSE:Rapid sequence intubation (RSI) drugs, such as propofol, affect clinical outcomes, but this has not been examined in the pediatric population. This descriptive study compares the outcomes associated with intubation drugs used in pediatric traumatic brain injury (TBI) patients. METHODS:A retrospective chart rev...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2020.01.041
更新日期:2020-05-01 00:00:00
abstract::Unilateral adrenal calcification was encountered incidentally in a 9-year-old boy during evaluation of enuresis. He was a large baby at birth, and perinatal history was suggestive of difficult labor. The case has been discussed through the possible causes of adrenal calcification and the management of these children. ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(99)90505-5
更新日期:1999-03-01 00:00:00