Abstract:
AIM/BACKGROUND:How the gubernaculum guides the testis into the scrotum remains controversial, with various proposals from passive inversion to active growth. We aimed to determine if the gubernaculum contains an area of active proliferation, such as a "progress zone" in a growing embryonic limb bud, using a fluorescent cell membrane marker, 1,1'-didodecyl-3,3,3',3'-tetramethylindocarbocyanine perchlorate [DiIC12(3)], to trace cell migration, and 5-bromodeoxyuridine (BUDR) (a thymidine analogue) as a mitotic marker. METHODS:Gubernacula were collected from neonatal male rats (n = 42, day 1-2, Sprague-Dawley) and cultured with calcitonin gene-related peptide (CGRP; 714 nmol/L). 1,1'-didodecyl-3,3,3',3'-tetramethylindocarbocyanine perchlorate-coated glass beads (diameter, 150-212 microm) were placed next to the bulb for the first 3 hours. Gubernacula were cultured for 3, 18, and 24 hours, then frozen sections cut and examined by confocal microscopy (wavelength, 549 nm). In a second experiment, pups not exposed to exogenous CGRP (n = 53, day 0, Sprague-Dawley) were injected intraperitoneally with BUDR (50 mg/kg of body weight); gubernacula were collected at 2, 48, 72, and 96 hours postinjection (PI), sectioned, and stained using immunohistochemistry to count the number of BUDR-positive cells per 100 cells (labeling index) in the bulb, cremaster, cord, and epididymis. RESULTS:After 24 hours' culture with CGRP, the bulb showed an oval region (diameter, 300 microm) of high fluorescence, and the cremaster region showed elongated cells migrating out of the bulb. When cultured without CGRP, the same oval region contained no fluorescence. In vivo BUDR labeling index increased in all areas until 48 hours postinjection and then decreased most rapidly in the bulb (P < .05), in the presence of endogenous CGRP from the genitofemoral nerve. CONCLUSIONS:The rat gubernaculum contains a putative progress zone, such as in a growing limb bud, in the presence of CGRP. Cells migrate out of this zone to form cremaster muscle. We hypothesize that proliferation in the bulb elongates the gubernaculum, whereas proliferation of cremaster cells would increase gubernacular diameter. This brings to "life" the gubernaculum as an actively growing organ in contrast to the inert ligament connecting the testis to the scrotum portrayed in most anatomy textbooks.
journal_name
J Pediatr Surgjournal_title
Journal of pediatric surgeryauthors
Na AF,Harnaen EJ,Farmer PJ,Sourial M,Southwell BR,Hutson JMdoi
10.1016/j.jpedsurg.2007.04.035subject
Has Abstractpub_date
2007-09-01 00:00:00pages
1566-73issue
9eissn
0022-3468issn
1531-5037pii
S0022-3468(07)00284-9journal_volume
42pub_type
杂志文章abstract:BACKGROUND/PURPOSE:Pulmonary hypertension plays a significant role in the pathophysiology of congenital diaphragmatic hernia (CDH). Although there has been an intensive research effort directed at mediators that may cause pulmonary vasoconstriction, no single agent has been identified. The authors hypothesize that ther...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(98)90675-3
更新日期:1998-06-01 00:00:00
abstract::We present a case of intestinal obstruction owing to a gallstone ileus in a patient 20 years after a Kasai procedure for biliary atresia in which a stapled antireflux valve was constructed to treat recurrent cholangitis. The etiology of this rare presentation is discussed. ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2006.09.027
更新日期:2007-01-01 00:00:00
abstract:PURPOSE:The aim of this study was (1) To determine the value of fine-needle aspiration cytology (FNAC) in children with persistent or suspicious peripheral lymphadenopathy and (2) to analyze whether a history of previous malignancy influenced the accuracy of FNAC. METHODS:A retrospective study in an Academic Children'...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1053/jpsu.2001.19991
更新日期:2001-01-01 00:00:00
abstract:PURPOSE:The purpose of this study was to compare the incidence and type of technical complications seen in a concurrent series of pyloromyotomies done open and laparoscopically. METHODS:The medical records of all patients who underwent pyloromyotomy for congenital hypertrophic pyloric stenosis over a 66-month period w...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2003.11.047
更新日期:2004-03-01 00:00:00
abstract:BACKGROUND/PURPOSE:The laparoscopic treatment of pediatric appendicitis remains controversial, particularly in complicated cases (gangrene and perforation). This study evaluates outcomes of open (OA) and laparoscopic appendectomy (LA). METHODS:The 391 cases of pediatric appendectomy performed between January 1998 and ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1053/jpsu.2002.32255
更新日期:2002-05-01 00:00:00
abstract::Sacrococcygeal teratoma (SCT) is being diagnosed before birth with increasing frequency. We were recently consulted about management of a 22-week fetus with SCT and reviewed our experience (6 cases) and the literature. We found that most fetal SCT present from 22 to 34 weeks gestation with a uterus enlarged by the tum...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(86)80404-3
更新日期:1986-07-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to evaluate whether partial hepatectomy (PH) enhances the growth of implanted intrahepatic and subcutaneous tumor and whether octreotide (OCT) can alter tumor growth. METHODS:Ninety-one ACI rats (125 g) underwent a laparotomy; 51 had a 66% PH and 40 were controls. Morris hepatoma 39...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(97)90385-7
更新日期:1997-07-01 00:00:00
abstract::Two infants with congenital long tracheal stenosis underwent operation by means of an esophageal tracheoplasty. The first patient had previously undergone tracheal reconstruction using the pericardium. Although ventilation improved somewhat following this procedure, the pericardial patch suddenly ruptured 12 days afte...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(92)90468-m
更新日期:1992-05-01 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:PURPOSE:The purpose of the study is to study the natural course of undescended testes after inguinoscrotal surgery. METHODS:From 2003-2010, 24 boys were observed with 26 undescended testes after inguinoscrotal surgery; 12 had previously undergone inguinal hernia repair and 12 orchidopexy. Spontaneous descent was await...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2013.06.016
更新日期:2013-12-01 00:00:00
abstract:PURPOSE:The mortality rate for pediatric trauma patients cared for in adult trauma centers has been shown, by means of TRISS methodology, not to differ significantly from that of the Major Trauma Outcome Study (MTOS). The question remains, however, whether the outcome of injured children is better in a designated pedia...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(96)90322-x
更新日期:1996-01-01 00:00:00
abstract:PURPOSE:To assess the diagnostic accuracy of limited abdominal ultrasound (US) examination for midgut volvulus (MGV) and to evaluate how clinical practice has changed in a free-standing children's hospital leading to the near obsolescence of upper GI (UGI) studies for the diagnosis of MGV. MATERIALS AND METHODS:All pa...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2020.04.012
更新日期:2020-12-01 00:00:00
abstract::Cutaneous presentations of bronchogenic cysts are rare in all age groups. Previous reports of cutaneous manifestations of bronchogenic cysts have been described as nodular, adherent masses, most frequently with a suprasternal location. We report a unique presentation of an infant with a pedunculated, anterior chest wa...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2012.02.024
更新日期:2012-07-01 00:00:00
abstract::Reconstruction of the right common carotid artery has been shown to be feasible in neonates after extracorporeal membrane oxygenation (ECMO). However, the long-term outcome after carotid artery reconstruction (CAR) remains unknown. The purpose of this study was to evaluate the natural progression of the anastomotic si...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(95)90339-9
更新日期:1995-07-01 00:00:00
abstract::A preterm infant's immature brain is susceptible to both anoxic and hemorrhagic injury during periods of physiological stress. The advent of in utero surgery has created a new population of premature patients at risk for central nervous system (CNS) injury. The aim of this study was to evaluate the frequency and natur...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(95)90009-8
更新日期:1995-08-01 00:00:00
abstract:BACKGROUND/PURPOSE:In Japan, surgical repair of a laryngotracheoesophageal cleft (LTEC) typically consists of the anterior approach, with the lateral approach as an alternative. Endoscopic surgery to repair the tracheoesophageal septum has been reported, and this study reviewed our experience treating several cases of ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2015.07.018
更新日期:2015-10-01 00:00:00
abstract::Cholelithiasis is increasingly being diagnosed in newborns and infants because of the more frequent use of abdominal ultrasound. However, common bile duct stones causing obstruction or symptoms in infancy are exceedingly rare and are not often reported in the literature. We report the successful treatment of symptomat...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2007.03.056
更新日期:2007-06-01 00:00:00
abstract:PURPOSE:Ovarian and testicular torsions are emergencies requiring prompt surgical treatment to preserve gonadal function. However, diagnosis in females is often delayed owing to nonspecific symptoms. We sought to assess disparities in management and outcomes between males and females with torsion. METHODS:The National...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2018.02.046
更新日期:2018-07-01 00:00:00
abstract::From 1982 to 1985, 23 patients underwent posterior sagittal anorectoplasty procedures: 12 as primary treatment for congenital anorectal malformations, 9 for treatment of fecal incontinence following a prior pull-through procedure, and 2 for treatment of fecal incontinence following trauma. Six patients (26%) developed...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(86)80218-4
更新日期:1986-06-01 00:00:00
abstract::To determine the extent of progress in the treatment of sacrococcygeal teratomas (SCTs), we evaluated the experience with 73 patients over 40 years. The medical records of the children were reviewed for demographics, histology, clinical course, and outcome. Therapy differed depending on the type of SCT, histology, and...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(92)90563-m
更新日期:1992-08-01 00:00:00
abstract:OBJECTIVES:Healthcare reform policies are emphasizing value-based healthcare delivery. We hypothesize that time-driven activity-based costing (TDABC) can be used to appraise healthcare interventions in pediatric appendicitis. METHODS:Triage-based standing delegation orders, surgical advanced practice providers, and a ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2017.03.032
更新日期:2017-06-01 00:00:00
abstract:PURPOSE:Nissen fundoplication is the most commonly performed operation to treat gastroesophageal reflux disease and vomiting in children with neurologic impairment. However, failure rates of Nissen fundoplication in this population are higher, and alternatives to Nissen fundoplication have technical and functional disa...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2011.10.024
更新日期:2012-01-01 00:00:00
abstract::Sirenomelia, or the mermaid syndrome, is the most extreme example of the caudal regression syndrome. It invariably presents with lower limb fusion, sacral and pelvic bony anomalies, absent external genitalia, anal imperforation, and renal agenesis or dysgenesis. Because of the resultant oligohydramnios, these infants ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(91)90614-y
更新日期:1991-11-01 00:00:00
abstract::The occurrence of malignant schwannoma in children is rare. A search of English language literature did not reveal involvement of cranial nerve among children. ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(86)80090-2
更新日期:1986-11-01 00:00:00
abstract::Persistent müllerian duct syndrome (PMDS) is a rare form of male pseudohermaphroditism. Bilateral fallopian tubes and a uterus occur with an otherwise normal male phenotype. Testicular neoplasm in PMDS has been reported, but malignant degeneration of the remnant female genitalia has only once been reported. We present...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2005.05.071
更新日期:2005-09-01 00:00:00
abstract:BACKGROUND/PURPOSE:Central hepatoblastomas (CHBL) involving liver segments (IV + V) or (IV + V + VIII) are in contact with the portal bifurcation. Their resection may be achieved by central hepatectomy (CH) with thin resection margins on both sides of the liver pedicle, by extended right or left hepatectomy with thin r...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2009.09.025
更新日期:2010-03-01 00:00:00
abstract:BACKGROUND:Necrotizing enterocolitis (NEC) continues to be a morbid surgical condition among preterm infants. Novel therapies for this condition are desperately needed. Hydrogen sulfide (H2S) is an endogenous gasotransmitter that has been found to have beneficial properties. We therefore hypothesized that intraperitone...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2017.12.003
更新日期:2018-09-01 00:00:00
abstract:PURPOSE:To describe a simplified surgical technique for the treatment of primary and secondary obstructed megaureters in children by laparoscopic extravesical ureteral reimplantation (LEUR) and evaluate the short-term outcomes. METHODS:Prospective study of children with primary and secondary megaureters treated at our...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2019.05.028
更新日期:2020-03-01 00:00:00
abstract::We describe the successful use of ultrasound-guided retrieval of a submandibular stone with a basket, in a 13-year-old child. ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2006.05.059
更新日期:2006-10-01 00:00:00
abstract:PURPOSE:With the advent of more aggressive chemotherapy, the incidence of neutropenic enteropathy is increasing. This review was performed to (1) determine which children are affected, (2) identify predisposing factors, and (3) assess efficacy of treatment. METHODS:A 10-year (1988 to 1997) review identified 33 childre...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(99)90566-3
更新日期:1999-07-01 00:00:00