Bronchial response pattern of antigen presenting cells and regulatory T cells in children less than 2 years of age.

BACKGROUND: In early childhood, the ability to mount protective immune responses in the airways is impaired, with increased risk of allergic sensitisation to inhaled allergens. Antigen presenting cells (APC) and regulatory T cells (Treg) are important modifiers of T cell immunity but little is known about their distribution in bronchial mucosa at this age. Here the subset distribution of APC and the appearance of Foxp3(+) Treg and bronchus associated lymphoid tissue (BALT) were examined immunohistochemically in children less than 2 years of age with chronic asthma-like symptoms of the lower airways. METHODS: Immunophenotyping was performed in situ on bronchial biopsy specimens obtained from 45 infants, 4-23 months of age, under investigation for airway disease. RESULTS: A well developed HLA-DR(+) network of APC was present in all samples, approximately 50% of the cells being CD68(+) macrophages and the remainder various subsets of dendritic cells. The density of HLA-DR(+) cells increased significantly with age but was not related to atopy, clinical symptoms or lung function. Comparing the density of APC subsets and clinical parameters, only the number of intraepithelial CD1a(+) dendritic cells was significantly increased in infants who had recently suffered a respiratory infection. BALT structures were identified in 22 children, with no relation to lung function, atopic status or human rhinovirus positivity. Plasmacytoid dendritic cells and Foxp3(+) Treg were located primarily within these isolated lymphoid follicles. CONCLUSION: A bronchial network of dendritic cells and macrophages develops quite rapidly after birth, apparently independent of clinical symptoms or atopy. The high frequency of BALT structures containing putative tolerogenic dendritic cells and Treg suggests that these lymphoid follicles play an important role in bronchial immune homeostasis during infancy.

Preoperative distal loop contrast radiograph before closure of an enterostomy in paediatric surgical patients. How much does it affect the procedure or predict early postoperative complications?

Before the closure of an enterostomy, a distal loop contrast radiograph (DLCR) is widely used to disclose pathology which may affect the performance of the procedure. We studied whether DLCR of paediatric patients caused actual alterations in the surgical plan and whether it predicted postoperative complications. Between 1991 and 2006, 105 patients (small bowel enterostomy, SBE; n = 51), (colostomy, CO; n = 54) underwent closure of an enterostomy. All 105 patients had preoperative DLCR. The indications for enterostomy included anorectal malformation (n = 38), neonatal intestinal perforation (n = 25), J-Pouch ileoanal anastomosis (n = 20), anorectal trauma (n = 5), and miscellaneous (n = 17). We recorded sensitivity, specificity, and positive and negative predictive value (PPV and NPV) of DLCR for complications within 6 postoperative weeks. DLCR was considered complete and interpreted as normal in 94 (90%) and abnormal (incomplete n = 3 or pathological n = 8) in 11 (10%) patients. None of the 11 abnormal findings caused cancellation of surgery, but in three (27%) patients it was possible to surgically correct a stricture seen in DLCR. The frequency of surgical complications was 17/105 (16%), SBE (15/51,29%) and CO (2/54, 4%), (P < 0.05). Most common complications (9/17, 53%) were those associated with the intestinal anastomosis. For postoperative complications DLCR had sensitivity, specificity, and PPV and NPV of 47, 97, 73 and 90% (SBE and 47, 97, 88 and 81%), (CO 50, 96, 33 and 98%). The pathology seen in DLCR, however, seldom directly hinted the complications which actually occurred. Abnormal DLCR changed the surgical plan in less than one-fifth of the cases. For surgical complications DLCR had poor sensitivity, good specificity and NPV, and moderate PPV. The pathology suggested by DLCR, however, correlated poorly with the actual complications. Poor sensitivity reflects the high frequency of anastomotic complications, which are practically unpredictable by preoperative radiographs.

The excess mortality due to periprosthetic femur fracture. A study from the Swedish national hip arthroplasty register.

A rare but serious adverse event of total hip replacement (THR) is periprosthetic femoral fracture. The aim of the present study was to assess whether there was an excess mortality due to such a fracture and to estimate the probability of death caused by the fracture. We studied primary total hip replacement in 27,652 men and 35,930 women with osteoarthritis from The Swedish National Hip Arthroplasty Register operated from 1979 to 2000. From the same register we also studied 392 men and 344 women with periprosthetic fracture from 1979 to 2000, all with osteoarthritis as the primary diagnosis. By the special method applied, it was possible to perform the estimation of death due to the fracture event though we could not determine in the individual case whether the fracture caused the death. Compared to the total population of patients operated with a primary THR there was a higher mortality rate immediately after the surgery for patients with periprosthetic fracture and in the longer run for patients below the age of 70 years. At the age of 70 years the estimated probability of death due to the fracture was 2.1% for men and 1.2% for women. At the age of 80 years at fracture the corresponding probabilities were 3.9% and 2.2% for men and women, respectively.

Risk factors for failure after treatment of a periprosthetic fracture of the femur.

Periprosthetic fracture of the femur is an uncommon complication after total hip replacement, but appears to be increasing. We undertook a nationwide observational study to determine the risk factors for failure after treatment of these fractures, examining patient- and implant-related factors, the classification of the fractures and the outcome. Between 1979 and 2000, 1049 periprosthetic fractures of the femur were reported to the Swedish National Hip Arthroplasty Register. Of these, 245 had a further operation after failure of their initial management. Data were collected from the Register and hospital records. The material was analysed by the use of Poisson regression models. It was found that the risk of failure of treatment was reduced for Vancouver type B2 injuries (p = 0.0053) if revision of the implant was undertaken (p = 0.0033) or revision and open reduction and internal fixation (p = 0.0039) were performed. Fractures classified as Vancouver type B1 had a significantly higher risk of failure (p = 0.0001). The strongest negative factor was the use of a single plate for fixation (p = 0.001). The most common reasons for failure in this group were loosening of the femoral prosthesis, nonunion and re-fracture. It is probable that many fractures classified as Vancouver type B1 (n = 304), were in reality type B2 fractures with a loose stem which were not recognised. Plate fixation was inadequate in these cases. The difficulty in separating type B1 from type B2 fractures suggests that the prosthesis should be considered as loose until proven otherwise.

Long-term outcome after internal sphincter myectomy for internal sphincter achalasia.

Anal internal sphincter achalasia is a rare cause of refractory constipation. It is usually treated by internal sphincter myectomy (ISM). The aim of this study was to evaluate the long-term outcome of patients who had undergone ISM for internal sphincter achalasia. Bowel habits, fecal continence, and quality of life were evaluated using a questionnaire. Fecal continence was quantitatively assessed by a score described by Holschneider. A questionnaire was sent to 13 patients (11 male, two female) operated on by ISM for intractable constipation caused by internal sphincter achalasia between 1983 and 1993. Ten patients responded and were included in the study. At the time of the study, three of the 10 patients required oral medication for constipation and had one to three bowel movements per week. One of the 10 patients had three to five bowel movements per day, and the others had one to two bowel movements per day. Four patients had normal and six patients had good continence scores. Four of the patients reported mild social problems, and one had problems associated with sports. Refractory constipation in the majority of patients with internal sphincter achalasia can be treated by ISM. However, in the long term, a significant number of patients suffer from soiling-related social problems.

Is routine dilatation after repair of esophageal atresia with distal fistula better than dilatation when symptoms arise? Comparison of results of two European pediatric surgical centers.

BACKGROUND/PURPOSE: The aim of this study was to determine whether routine dilatation of the anastomosis after repair of an esophageal atresia with distal fistula (EADF) is superior to a wait-and-see policy with dilatation only when symptoms arise. METHODS: The records of 100 consecutive patients operated on for EADF in 2 European pediatric surgical centers (A [n = 63], B [n = 37]) were reviewed. In center A, dilatation of the anastomosis was carried out in symptomatic cases only, whereas in center B dilatation was begun 3 weeks postoperatively and repeated every 1-3 weeks until a stable diameter of 10 mm was reached. Particular attention was paid to the number of dilatations per patient, dilatation-related complications, and differences in results after 2 years. RESULTS: The patient materials of both centers did not differ with respect to the incidence of prematurity, tracheomalacia, gastroesophageal reflux (GER), and major postoperative complications. The incidence of associated anomalies was higher in center B (P < .05). In center A, 26 of 63 patients underwent dilatation; in center B, all 37 patients were dilated (P < .05). Median number of dilatations per patient was 4 in center A and 7 in center B (P < .05). In center A, 23 of 26 and in center B, 20 of 37 of the patients received medical treatment for GER at the time of the dilatations. Dilatation-related complications developed in 7 of 26 patients of center A and in 3 of 37 patients in the center B (P value, not significant). The median primary hospital stay was 24 days in center A and 33 days in center B (P < .05), median secondary hospital stay for dilatation was 6 days in center A and 13 days in center B (P < .05). After 2 years of follow-up, the incidence of dysphagia, respiratory problems, or bolus obstruction did not differ significantly between the 2 centers. CONCLUSIONS: A wait-and-see policy and dilatations based on clinical indications for patients with repaired EADF is superior to routine dilatations. It appears that more than half of the patients do not require dilatations at all.

A genetic test which can be used to diagnose adult-type hypolactasia in children.

BACKGROUND/AIMS: Adult-type hypolactasia (primary lactose malabsorption) affects most of world's human population and limits the use of fresh milk due to lactose intolerance. The diagnosis of adult-type hypolactasia has been difficult to establish because of unsatisfactory diagnostic methods. C/T(-13910) single nucleotide polymorphism residing 13910 base pairs from the 5' end of the lactase gene has been shown to be associated with lactase persistence. The aim of the study was to assess the applicability of the C/T(-13910) variant as a diagnostic test for adult-type hypolactasia during childhood. METHODS: Intestinal biopsies were obtained from 329 children and adolescents of African, Finnish, and other White origins aged 0.1-20 years undergoing upper gastrointestinal endoscopy because of abdominal complaints. The biopsies were assayed for lactase, sucrase, and maltase activity and genotyped for the C/T(-13910) variant using polymerase chain reaction minisequencing. RESULTS: The frequency of the C/C(-13910) genotype defining lactase non-persistence was well in agreement in this study with published figures for the prevalences of adult-type hypolactasia in Africans and Whites. The C/C(-13910) genotype was associated with very low lactase activity (<10 U/g protein) in the majority of children tested at 8 years of age and in every child older than 12 years of age giving a specificity of 100% and sensitivity of 93% for the genetic test. The decline of lactase activity was somewhat earlier in African compared with Finnish children with C/C(-13910) genotype (p<0.03). CONCLUSIONS: Genetic test of C/T(-13910) polymorphism can be used as a first stage screening test for adult-type hypolactasia.

Does postoperative pH monitoring predict complicated gastroesophageal reflux in patients with esophageal atresia?

Gastroesophageal reflux (GER) is common after repair of esophageal atresia with a distal tracheoesophageal fistula (EATOF). In a retrospective study we assessed whether early 18-h pH monitoring can predict the development of EATOF-associated gastroesophageal reflux. During 1980-1997, 90 consecutive patients had primary repair for EATOF. Development of GER was classified as favorable if the patient developed no esophagitis or mild esophagitis and needed no antireflux medication, and as unfavorable if the patient developed moderate or secondary esophagitis or required an antireflux procedure. Patients who developed unfavorable GER outcome before pH monitoring or needed secondary reconstruction or those whose endoscopic follow-up data were insufficient were excluded. Eighteen-hour pH monitoring was considered pathologic if esophageal pH was <4 more than 10% of the recorded time or 5% of the recorded time minus 2 h after each meal, or if there were more than three preprandial reflux periods lasting longer than 5 min. A total of fifty patients were included into the study. pH monitoring was performed at the median age of 9.2 (range 2.5-95.0) months and classified as pathologic in 10 and normal in 40 patients. After a median follow-up of 59 (0.3-217.6) months, nine of 10 (90%) patients with pathologic pH monitoring and five of 40 (12.5%) patients with normal pH monitoring developed unfavorable outcomes ( p<.05). We conclude that early pH monitoring predicts the development of significant GER, but because 12.5% of patients with normal early pH monitoring also developed significant GER, early pH monitoring alone does not rule out the development of significant GER.

The Santulli enterostomy in necrotising enterocolitis.

An ideal operation for necrotising enterocolitis (NEC) would be quick and reliable, remove all nonviable bowel, minimise the loss of intestinal length, permit early restoration of intestinal continuity, and minimise the need for secondary operations. No operation currently meets all these needs. In this study we review our experience with the Santulli enterostomy in NEC. From 1992 to 1998, 19 patients (16 males, three females) underwent a Santulli enterostomy for Bell grade III NEC. The median gestational age at birth (GA) was 26 weeks (range 23-30), and the median birth weight 755 g (range 600-1095). The median patient age at operation was 10 days (range 3-59), and the median operative time was 55 min (range 25-90). Sixteen (84%) patients survived. Complications included leakage of the Santulli anastomosis in four cases, stomal necrosis in two cases, additional intestinal necrosis in two cases, leakage of a concurrent intra-abdominal anastomosis in two cases, and intestinal obstruction in four cases. Twelve patients underwent relaparotomy. Enteral feeding was started at a median of 5 days postoperatively (range 2-9), with full oral feeding possible at a median of 21 days (range 10-128). The median time until closure of the enterostomy was 48 days and the median hospital stay 87 days (range 19-197). After stomal closure, obstructive symptoms necessitated a new Santulli enterostomy in two patients and a revision of the anastomosis in one patient. Santulli enterostomy can be used to treat NEC even in very small premature babies. It enables rapid recovery of intestinal continuity and early stomal closure. However, the operation is technically demanding and carries significant morbidity.

Increased cell turnover, but no signs of increased T-cell infiltration or inflammatory cytokines in the duodenum of pediatric patients after allogeneic stem cell transplantation.

Intestinal immunopathology was studied after allogeneic stem cell transplantation (SCT) in a common clinical setup in 20 children with malignant (n=17) or nonmalignant diseases (n=3) receiving grafts from siblings (7) and unrelated donors (13). In all, 19 had total body irradiation. Duodenal biopsies at 6 and 12 weeks post transplant were evaluated by histology, immunohistochemistry, and ISEL for the detection of T-lymphocytes, inflammatory cytokines, proliferation, and apoptosis. The controls were 12 healthy children and three patients with proven intestinal graft-versus-host disease. An increased rate of apoptosis and proliferation with upregulated expression of HLA-DR antigen was detected up to 3 months post transplant in the SCT patients, even in those with a histologically normal small intestine. A low level of IFNgamma and TNFalpha was observed in the lamina propria. The initial low density of gammadelta-positive T cells had recovered to normal by the time of the second endoscopy at 12 weeks post transplant. We conclude that inflammatory activity and T cell infiltration detected by immunohistochemistry may not belong to the 'normal' recovery of the small intestine after SCT. Increased cell turnover in the intestinal crypts continues until 3 months after SCT, suggesting either an unexpectedly long-lasting effect of transplant-related toxicity or, preferably, an ongoing subclinical alloreactive process, also present in the patients without intestinal symptoms.

Morbidity and quality of life in adult patients with a congenital abdominal wall defect: a questionnaire survey.

BACKGROUND: In children with congenital abdominal wall defects (CAWD), surgical treatment of the abdominal defect and the associated anomalies cause considerable morbidity in the first years of life. Afterward, most of the CAWD patients with correctable anomalies develop as other children. The morbidity and quality of life (QoL) of CAWD patients who have reached their adulthood is less well known and the subject of this study. METHODS: A 3-part questionnaire was sent to 75 former patients with CAWD, aged 17 years or more. The first part included questions about health, symptoms, and education; the second part consisted of 3 tests of psychosocial functioning; and the third part was a SF-36 questionnaire measuring the QoL. RESULTS: Of the 75 patients, 57 (76%) answered: (25 males, 32 females); omphalocele (n = 16) gastroschisis (n = 11); median age, 27 (range, 17 to 48) years. With the exception of rheumatoid arthritis (in 7% of patients), the prevalence of acquired diseases in CAWD patients was comparable with that of the general population; 50 of 57 (88%) considered their health good. The most frequent causes of morbidity were disorders in the abdominal scar in 21 (37%) patients, and functional gastrointestinal disorders in 29 (51%) of patients. Low self-esteem was found in 12% of patients, but the QoL and educational level of CAWD patients were not different from that of the general population. CONCLUSIONS: In CAWD patients the morbidity from acquired disorders is similar to morbidity in the general population. Disorders with the abdominal scar and various functional gastrointestinal disorders are common, but they rarely cause serious problems. The majority of CAWD patients have a quality of life not different from the general population.

Proctocolectomy and J-pouch ileo-anal anastomosis in children.

BACKGROUND/PURPOSE: The choice of ileo-anal reconstruction method in children undergoing proctocolectomy remains controversial. Although in adults ileo-anal pouch reconstruction has gained overall acceptance, many paediatric surgeons still advocate straight ileo-anal pull-through. The aim of this study was to assess the outcome and long-term functional results in children who have undergone proctocolectomy and ileo-anal anastomosis (IAA) with a J-pouch. METHODS: Medical records of 40 consecutive children who had proctocolectomy and J-pouch IAA between 1991 and 1999 were reviewed for early and late complications, fecal frequency, day- and night-time continence, and pouchitis. The indication for surgery was ulcerative colitis (UC) in 29 (median age at operation, 13 years; range, 9 to 16), Hirschsprung's disease (HD) in 10 (median age at operation, 1.5 years; range, 1 month to 5 years), and familial adenomatous polyposis (FAP) in 1 (age at operation, 6 years). Six of the HD patients had primary pull-through for total colonic aganglionosis and 4 a redo operation for failed primary reconstruction of long segment aganglionosis. RESULTS: There were no fatalities. Early complications (wound infection, early bowel obstruction, prolonged fever) occurred in 12 of 29 (41%) and late complications (bowel obstruction 9, pouch fistula 2) in 11 of 29 (38%) of the UC patients. Overall, 16 of 29 (53%) of the UC patients had complications. All patients with early complications were on systemic steroids at the time of the operation. Pouchitis occurred in 30% of the patients. None of the pouches had to be removed. At last follow-up all patients were continent during the day, 2 patients used protective pads during the night because of occasional staining. The median bowel frequency per 24 hours was 4 (range, 2 to 7); only 2 patients (7%) had to empty their bowel during the night. One (10%) of the HD patients had wound infection, and 3 had episodes of postoperative enterocolitis. Pouchitis-type symptoms have not occurred in HD patients. The median bowel frequency for 24 hours was 3 (range, 2 to 5). None of the HD patients needs to evacuate during the night. The 4 HD patients who are older than 3 years of age are continent. CONCLUSIONS: J-pouch IAA is a feasible method of reconstruction in children requiring proctocolectomy. Major complication are common but occur mainly in immunosuppressed patients suffering from UC. Despite high incidence of complications, long-term functional results in terms of continence and bowel frequency are excellent and ensure good quality of life in the great majority of patients.

Intraluminal casein model of necrotizing enterocolitis for assessment of mucosal destruction, bacterial translocation, and the effects of allopurinol and N-acetylcysteine.

An intraluminal casein model (ICM) of necrotizing enterocolitis (NEC) is able to produce small-bowel changes reminiscent of human NEC in neonatal animals. We studied bacterial translocation (BT) in NEC induced by using the ICM in neonatal piglets. We also studied whether allopurinol (AL) and N-acetylcysteine (NAC) have an effect on BT and mucosal changes in the ICM of NEC. Twenty-eight neonatal piglets were randomized into four groups. NEC was induced in 21 by injecting casein-d-gluconate into a loop of terminal ileum: group Cas (n = 7) had no premedication, in group Cas/AL (n = 7) intravenous (i.v.) Al (100 mg/kg), and in group Cas/NAC (n = 7) i.v. NAC (200 mg/kg) was given. Group Sham (n = 7) had the ileum injected with 0.9% saline with no premedication. Immediately after the injection a mesenteric lymph node (MLN) adjacent to the loop was harvested for quantitative aerobic bacterial culture; 4 h after the injection another MLN and samples of spleen, liver, kidney, and lung were harvested and cultured. Comparison of the incidence of samples with positive bacterial cultures and the number of colony-forming units (CFU) in samples was made between groups. The severity of NEC in the ileum was graded from 0 to 3 according to macroscopic and histologic findings. NEC changes in the bowel were most severe in Cas piglets, less severe in Cas/NAC piglets ( P < 0.5), and sham piglets had the least severe changes ( P < 0.05). piglets with NEC changes in the ileum had a higher incidence of BT into the MLN than piglets without NEC changes ( P < 0.05), but the difference in CFU was not significant ( P > 0.05). In Cas and Cas/NAC piglets a high incidence of BT into the MLN was noted as early at -5 min after casein injection. The incidence of BT into the MLN was significantly higher in Cas and Cas/NAC piglets than in Sham piglets ( P < 0.05), the difference in CFU being not significant ( P > 0.05). BT in Cas/Al piglets was not significantly different from that of Cas piglets ( P > 0.05), but less than in Cas/NAC piglets ( P < 0.05). Four hours after casein injection into the ileum there was significant BT into the MLN. Premedication with NAC was associated with less severe NEC changes, but neither NAC nor AL significantly affected BT.

Fecal continence in patients having undergone posterior sagittal anorectoplasty procedure for a high anorectal malformation improves at adolescence, as constipation disappears.

BACKGROUND/PURPOSE: Constipation is a major complication in patients who have undergone posterior sagittal anorectoplasty (PSARP) operation for a high anorectal malformation. Overflow incontinence is the main cause of fecal soiling in these patients. The aim of this study was to outline the natural history of constipation in patients with high anorectal malformations and relate this to the functional outcome at the end of the patient's growth period. METHODS: The study group consisted of 22 pubertal or postpubertal patients (median age 15; range, 13 to 25) with high or intermediate anorectal malformations repaired by PSARP procedure. The patients have been followed-up since birth. Constipation was defined as a need to use medical treatment or diet to ensure bowel emptying. Continence was classified as follows: grade 1, no soiling in any circumstances; grade 2, staining less than once a week, no fecal accidents; grade 3, staining more than once a week, no fecal accidents; grade 4, daily soiling or accidents, need for regular enemas, or the antegrade colonic enema procedure. All patients underwent anorectal manometry and magnetic resonance imaging of the spine and spinal cord. RESULTS: At the time of the study 2 (9%) of the 22 study group patients had constipation, but 15 (68%) had been constipated before puberty. Eleven patients (50%) were fully continent (grade 1) without constipation. Six of those had a history of constipation associated soiling. Three patients (14%) had occasional staining (grade 2) and no constipation. Two of them had been constipated with significant soiling before the onset of puberty. In the 5 (22%) patients with frequent staining (grade 3) the degree of soiling had decreased after the disappearance of constipation. Two of the 3 patients with poor outcome (grade 4) require regular enemas for recalcitrant constipation. Spinal cord anomalies were detected in 4 and abnormal sacrum in 15 patients. Of the anorectal manometric parameters, only the force of voluntary sphincter squeeze correlated with the functional result. CONCLUSION: In the majority of patients who underwent PSARP procedure for high anorectal malformation, constipation disappears at adolescence, and this is associated with improved fecal continence outcome.

Sodium cromoglycate in the management of chronic or recurrent enterocolitis in patients with Hirschsprung's disease.

BACKGROUND/PURPOSE: Chronic or recurring enterocolitis is a rare but perplexing complication of Hirschsprung's disease affecting especially patients with altered immune defense such as those with Down's syndrome. Sodium cromoglycate (SCG) is a nonabsorbable mast cell stabilizing agent that has been documented to be effective in the treatment of inflammatory bowel disease. The authors studied the effect of SCG in Hirschsprung patients with refractory chronic or recurrent enterocolitis. METHODS: Eight patients (4 with Down's syndrome, 2 with other chromosomal aberrations, 2 otherwise healthy; age range from 4 to 22 years) with chronic (5 patients) or recurrent (>6 episodes/year, 3 patients) enterocolitis received 100 to 200 mg of SCG 4 times a day depending on the age of the patient. The chronic diarrhea or recurrent bouts of enterocolitis in the patients were refractory to dietary management and enteral antibiotics. Before the treatment all patients had ileocolonoscopy, the results of which showed macroscopic and histological chronic inflammation in all cases. No neuronal abnormalities were detected in biopsy results. None of the patients had colonic dilatation or increased anorectal resting pressures suggesting outlet obstruction. RESULTS: The follow-up of the patients ranges from 8 months to 26 months. Three of the 5 patients with chronic enterocolitis responded favorably. In these 3 patients the median number of daily bowel movements decreased from 6 to 3, and none experienced bouts of abdominal distension. Diarrhea-related soiling decreased also significantly. Two of the 3 patients with recurrent enterocolitis have remained asymptomatic, and none has required antibiotics after the onset of SCG treatment; one patient had an episode of enterocolitis after 12 months treatment. Two patients with chronic enterocolitis did not respond to SCG. No side effects of SCG were encountered. CONCLUSIONS: This preliminary and nonrandomized study suggests that SCG is an effective treatment modality for chronic or recurrent enterocolitis in patients with Hirschsprung's disease. Because SCG is not absorbed From the intestinal tract there are no systemic side effects.

Dental caries is common in Finnish children infected with Helicobacter pylori.

Childhood factors such as low socioeconomic status are risk factors for Helicobacter pylori infection and Streptococcus mutans-related dental caries. We examined whether H. pylori infection and dental caries are present today in the same group of children examined previously. We reviewed the public dental health service files of 21 H. pylori-positive children (upper gastrointestinal endoscopy at a median age of 13.5 y) and 27 H. pylori-negative children (endoscopy at a median age of 12.5 y) examined during 1995-98 at the Helsinki University Central Hospital, Finland. All H. pylori-positive children had experienced dental caries in their primary or permanent teeth or in both whereas among H. pylori-negative children the respective proportion was 70% (p < 0.01). At the age of 7 y, 18% (3/17) of the H. pylori-positive children had experienced caries in permanent teeth as compared to 0% among H. pylori-negative children (0/24; p < 0.05). At the age of 12 y, H. pylori-positive children had more decayed, missing or filled permanent teeth than H. pylori-negative children (80% vs. 38%; p < 0.05). Although a causal relationship between H. pylori and dental caries is unlikely, it is possible that H. pylori-infected children have an increased risk of other health problems, such as dental caries, for which proper treatment is needed.

cagA, vacA and iceA virulence genes of Helicobacter pylori isolates of children in Finland.

cagA, vacA s and m genotypes and iceA alleles were analyzed from Helicobacter pylori strains isolated from 17 Finnish children and 32 children of non-Finnish origin living in Finland. Twelve children in the latter group were eastern European and 15 were of African origin. Only three children of non-Finnish origin were born in Finland. The vacA sla subtype was more prevalent in the isolates from Finnish children than African children (76% vs. 7%, P<0.001); vacA s1b frequencies were 5% and 67%, respectively (P<0.001). The iceA1 allele was significantly more prevalent in African than Finnish isolates (93% vs. 35%, P< 0.01). Considerable variation was noted in the frequency of vacA s1 subtypes and iceA alleles in children originating from different geographic regions, but the geographic variation of s1 subtypes resembled that described in other reports.

Rectosigmoid pHi monitoring during experimental necrotizing enterocolitis.

BACKGROUND/PURPOSE: Gastric or rectosigmoid intramural pH (pHi) is considered a reliable indicator of splanchnic perfusion. The aim of this study was to evaluate whether rectosigmoid pHi reflects the severity of bowel damage in experimental necrotizing enterocolitis (NEC). METHODS: A total of 36 neonatal piglets, (median age, 3; range, 1 to 11 days; median weight, 2.5; range, 1.2 to 3.8 kg), were anesthetized, ventilated mechanically, and had invasive monitoring of hemodynamics. A sigmoid tonometer was inserted into the rectosigmoid colon. Enterocolitis was induced in 27 piglets by intraluminal injection of casein-d-gluconate (16.0 mL/kg) into terminal 100 cm of the ileum. Nine control piglets received an equal amount of intraluminal saline. NEC was graded macroscopically as follows: 0, no changes; 1, mild; 2, moderate; and 3, severe. Histology was evaluated according to Chiu scale from 0 to 5. RESULTS: The macroscopical bowel injury in caseine-injected piglets was as follows: grade 3 (n = 6), grade 2 (n = 9), grade 1 (n = 12). All control piglets showed macroscopically normal bowel (grade 0). All affected bowels showed histologic changes (Chiu's scale 2 to 4). All study animals had an initial drop of pHi after injection of casein or saline. In control piglets and those with mild NEC (grade 1) pHi tended to return to preinjection level. In animals with moderate or severe NEC (grade 2 to 3) the initial drop was deeper and the pHi continued to decrease significantly throughout the experiment (P < .05). In the arterial pH and mean blood pressure there were no statistically significant differences between piglets with no NEC and mild NEC, and these with moderate or severe NEC. CONCLUSION: Drop in rectosigmoid pHi was the most sensitive and earliest sign of severe mucosal necrosis of ileum in this experimental NEC model.

Transanal endorectal coloanal surgery for Hirschsprung's disease: experience in two centers.

BACKGROUND/PURPOSE: Transanal mucosal proctectomy with low coloanal anastomosis has been used widely in the treatment of rectal malignancies, ulcerative colitis, and familial polyposis. The use of this technique for Hirschsprung's disease is a relatively new concept. The aim of this study was to evaluate and compare the results of transanal endorectal coloanal anastomosis (TECA) for Hirschsprung's disease from 2 centers. METHODS: All children who underwent TECA for Hirschsprung's disease at Alder Hey Children's Hospital, Liverpool, England from January 1995 to December 1998 (n = 41) and the Children's Hospital, Helsinki, Finland from June 1988 to December 1998 (n = 95) were evaluated. Patient demographics, age at diagnosis, initial management, length of aganglionic segment, and age at operation were documented. Postoperative complications and functional outcome were analyzed. RESULTS: Patient demographics were similar in the 2 centers. Age at diagnosis was less than 1 month in 71% of children at Liverpool, compared with 53% at Helsinki. Sixteen (39%) patients in Liverpool and 75 (79%) patients in Helsinki underwent primary TECA without colostomy. Postoperative enterocolitis occurred in 14 of 136 patients (10%). An ischemic stricture of the colon was documented in 4 children in the Liverpool series, 2 of whom had TECA as a salvage procedure after a previously failed Duhamel pull-through operation. Frequency of bowel movements, seen in the immediate postoperative period in most patients gradually improved with time from a median of 5 (range, 2 to 12) bowel movements a day at 3 months after TECA to 2 (range, 1 to 6) bowel movements a day at 2 years' follow-up. Assessment of continence was possible in 51 of 136 patients (37%) over the age of 4 years. Thirty-nine children had normal bowel function giving an overall success rate of 76%. CONCLUSIONS: Transanal endorectal coloanal anastomosis is a good technique for treatment of Hirschsprung's disease with few operation-related complications. Based on the data emerging from these 2 centers the functional outcome is highly satisfactory and comparable with other established procedures.