Child, Preschool ; Humans ; Male ; Nevus, Blue ; pathology ; Skin Neoplasms ; pathology

Objective To study the effects of new triple therapy with clarithromycin plus amoxicillin and omeperazole combined into 3 therapeutic therapies, and 3 therapeutic courses to treat children with helicobacter pyloric(Hp) infection.Methods Two hundred and four patients who were diagnosed by gastroscopy as Hp-related gastroentestinal diseases and divided into 3 groups,randomly.Group A was treated with amoxicillin 50 mg/(kg?d)+bismuth citrate 7-8 mg/(kg?d)+metronidzole 15-20 mg/(kg?d) for six weeks;group B took the same drugs but for two weeks;group C was treated with clarithromycin 15 mg/(kg?d)+omeperazole 0.8 mg/(kg?d)+amoxicillin 50 mg/(kg?d) for 2 weeks.Results The rates of eradicate of Hp:group A 73.4%,group B 75%,group C 92%.The differences between group B and group C were very significant.Conclusion Triple therapy is more effective, less duration,well tolerated, less resistant,with higher rate of eradication.

Multi-drug resistance (MDR) of cancer cells is a major cause of failure in chemotherapy. To the majority of anti-cancer drugs, tumor cells are able to generate a multi-drug resistance; but there is no common views on the mechanism of MDR. This review summarizes the use of drug delivery system based on nanoparticles to overcome MDR in recent years. Three kinds including non-modified, ligand-modified and multifunctional drug delivery systems are described. Especially, the mechanism of reversing MDR based on nanoparticles is covered. Through efficiently offsetting and antagonizing the action of pumping drugs out of the tumor cells, drug delivery system based on nanoparticles can increase the concentration of the drug in tumors, while reduce the side effects on normal cells and overcome multi-drug resistance. The use of drug-loaded nanoparticles, which combines nanotechnology with the strategy of active and passive targeting administration, has shown significant prospect improving cancer therapy.
Animals ; Antineoplastic Agents ; administration & dosage ; therapeutic use ; Drug Delivery Systems ; methods ; Drug Resistance, Multiple ; Drug Resistance, Neoplasm ; Humans ; Nanoparticles ; therapeutic use ; Neoplasms ; drug therapy

OBJECTIVETo optimize the method in the Chinese Pharmacopoeia for determining Salviae Miltiorrhizae Radix et Rhizoma.

METHODTanshinone II(A) and salvianolic acid B were selected as the index in optimization of the sample preparation method of Salviae Miltiorrhizae Radix et Rhizoma in Chinese Pharmacopoeia. Orthogonal test was used to optimize the extraction process of Salviae Miltiorrhizae Radix et Rhizoma, and concentration of contents were detected by high performance liquid chromatography method. A detection of using methanol-water (85: 15) at wavelength of 270 nm was employed for tanshinone II(A) and a detection of using methanol-acetonitrile-formic acid-water (30:10:1: 59) at wavelength of 286 nm was employed for salvianolic acid B.

RESULTThe optimized extraction process of tanshinone II(A) and salvianolic acid B was: extracted by 90% methanol and reflux twice (0.5 h each time) at 75 degrees C, extracted by 70% methanol and reflux twice (1.5 h each time) at 75 degrees C, respectively.

CONCLUSIONOptimized extraction and determination methods could be used to reflect the content of tanshinone II(A) and salvianolic acid B in Salviae Miltiorrhizae Radix et Rhizoma more accurately and efficiently.

Benzofurans ; analysis ; Chromatography, High Pressure Liquid ; Diterpenes, Abietane ; analysis ; Rhizome ; chemistry ; Salvia miltiorrhiza ; chemistry ; Temperature

Objective To observe whether the expression of interferon-regulatory factor genes are re- lated to systemic lupus erythematosus (SLE).Methods The clinical data of 45 SLE patients and 37 normal controls were collected.Total RNA of peripheral blood was extracted and transcripted into cDNA.Sybr green dye based real-time quantitative PCR method was used to compare the expression (indicated as-??Ct value) of IRFI,IRF4,IRF8 in patients with SLE and those in the controls.Results The levels of IRF1,IRF4 and IRF8 mRNA were-3.90?0.19,-8.04?0.25 and 3.60?0.15 respectively in normal controls.In SLE patients, IRF4 mRNA expression was -8.82?0.18,higher than that in normal (P=0.011).But IRF8 mRNA expression was 3.09?0.13,lower than that in normal (P=0.012).Conclusion Abnormal IRF mRNA expression is found in the peripheral blood of SLE patients.IRFs may play roles in the pathogenesis of SLE by affecting the differen- tiation of Th cells.

OBJECTIVEEndoscopic sclerotherapy has emerged as an effective treatment for bleeding esophageal varices in adults and children but the long-term outcome is poorly defined in children. The present study aimed to study the long-term effect of endoscopic sclerotherapy in children with portal hypertension.

METHODSFifteen patients (age 3 to 14 years) with esophageal variceal bleeding underwent endoscopic injection treatments with 1% Aethoxy-sclerol since 1996. All subjects continued to receive the therapy by repeated intra and extravariceal endoscopic sclerotherapy at intervals of 3 - 4 weeks until the varices disappeared, and received regular endoscopic follow-up.

RESULTSFifteen patients had totally 43 injections, and were followed up from 40 to 86 months (mean 66 months) by endoscopy. Two patients received 2 injections and 5 received 3 before eradication of varices. The mean time needed for varices eradication was 3 to 6 months. Recurrence of varices and bleeding was seen in 3 patients who had duodenal ulcer.

CONCLUSIONEndoscopic sclerotherapy is a safe and effective treatment for pediatric esophageal varices.

Adolescent ; Child ; Child, Preschool ; Duodenal Ulcer ; complications ; Esophageal and Gastric Varices ; etiology ; therapy ; Esophagoscopy ; Gastrointestinal Hemorrhage ; etiology ; therapy ; Humans ; Hypertension, Portal ; complications ; Injections, Intralesional ; Polyethylene Glycols ; administration & dosage ; Recurrence ; Reoperation ; Sclerosing Solutions ; administration & dosage ; Sclerotherapy ; Time Factors ; Treatment Outcome

OBJECTIVEWith the development of endoscopic therapy in children, endoscopic electrocoagulation polypectomy had gradually replaced surgery and became an important method to resect gastrointestinal polyps in children. Simple electrocoagulation polypectomy could often bring some complications of gastrointestinal bleeding and perforation because of incomplete electrocoagulation or mechanical incision, especially in gastrointestinal thick-pedunculated polyps which always have thick nutrient blood vessel. Hemoclips can successfully interdict arteriovenous blood because it can clamp tissue firmly without causing necrosis around the target area. Based on its good mechanical hemostasis, hemoclips are not only widely used in treating bleeding like from ulcer, tumor and variceal ligation but also used in removal of thick-pedunculated gastrointestinal polyps in adults. This paper describes the application of endoscopic electrocoagulation with metal hemoclips to remove thick-pedunculated intestinal polpys in children for the first time, sums up the experience and evaluates its efficacy and safety.

METHODSBetween October, 2001 and December, 2002, 5 cases with thick-pedunculated intestinal polpys were presented. The age of the patients ranged from 3 to 5 years. The clinical features were gastrointestinal bleeding or abdominal pain. The longest course of disease was 2 years. Enough preparations for alimentary tract were necessary for polypectomy. The procedures were performed under general anesthesia in order to avoid the risk of bleeding aspiration. Endoscopy was performed in the standard fashion. The apparatus included electronic colonic endoscope (XQ 200, Fuji Corp, Tokyo, Japan), snare (XQ200, Fuji Corp, Tokyo, Japan), impeller of the clip (HX-5QR-1) and hemoclip (MD850) which could be passed through the biopsy channel of endoscope. The clip was completely covered with a hood avoiding any injury to the mucous membrane. The pedicel with diameter of more than 1.0 cm underwent endoscopic electrocoagulation polypectomy with hemoclips. The clip contacted polyps in upright direction. One or more hemoclips were selected to clamp the proximal basement of the pedicel in terms of the pedicel diameter. Turning of the red colour of polyps to purple suggested that hemoclip interdicted arteriovenous blood effectively. The clip was then shut off and electrocoagulation polypectomy was followed. Six polyps were observed and removed.

RESULTSSix polyps including 2 transverse colon polyps and 4 descending colon polyps were resected. Pathological results showed that 3 were juvenile polyps and the other 3 adenomatous polyps. All the polyps were completely resected. The diameter of pedicel were 1.2 - 2.2 cm. The head and pedicel of the biggest polyp was about 5 cm x 5 cm and 2.2 cm, respectively, and five clips were used in order to remove it. No complications of bleeding and perforation were observed in these children. All hemoclips were expelled from intestines within one week. The symptoms of these patients disappeared.

CONCLUSIONMechanical hemostasis with hemoclips successfully interdicted arteriovenous blood of thick-pedunculated polyps. Hemoclips can successfully prevent the complications of bleeding and perforation. The clipping brings about a new method in endoscopic therapy. Endoscopic electrocoagulation polypectomy with hemoclips is a simple, safe and effective method to treat thick-pedunculated gastrointestinal polyps in children and it is a valuable tool in polypectomy for children.

Child ; Child, Preschool ; Endoscopy ; methods ; Humans ; Intestinal Polyps ; surgery ; Surgical Instruments ; Treatment Outcome

OBJECTIVETo study the relationship between the changes of intestinal mucosal tumor necrosis factor alpha (TNF-alpha), plasma diamine oxidase (DAO) values and the degree of mucosal injuries in young rat model of colitis and thereby to explore if plasma DAO could be used as a potential index for monitoring intestinal mucosal injury.

METHODSOne hundred and four healthy young male Sprague-Dawley (SD) rats aged 5-6 weeks were randomly divided into three groups: zero time group (n = 8), model group (n = 48) and control group (n = 48). The model and control groups were further divided into 24 h, 72 h, 1 week, 2 weeks, 3 weeks and 4 weeks subgroups, respectively, with 8 rats in each. The rats in model group were given 2, 4, 6-trinitrobenzene sulfonic acid (TNBSA) via enema to induce colitis, while the rats in the control group were given normal saline (NS) solution in the same way and those in zero time group were not treated. TNF-alpha and DAO were measured by immunohistochemical technique and spectrophotometry.

RESULTSThe most serious enteric mucosal injury was seen 24 hours after giving TNBSA. Plasma DAO and TNF-alpha decreased as the intestinal mucosal injury was alleviated.

CONCLUSIONSPlasma DAO values may be used as a marker for intestinal mucosal injury. TNF-alpha is a factor for causing mucosal injury. Young rat colitis model can be used to study intestinal mucosal injury.

Amine Oxidase (Copper-Containing) ; blood ; Animals ; Biomarkers ; blood ; metabolism ; Colitis ; blood ; chemically induced ; metabolism ; pathology ; Disease Models, Animal ; Enema ; Immunohistochemistry ; Intestinal Mucosa ; metabolism ; pathology ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Severity of Illness Index ; Spectrophotometry ; Time Factors ; Trinitrobenzenesulfonic Acid ; Tumor Necrosis Factor-alpha ; metabolism

Objective To observe the effect of stanozolol(ST) on long bone growth and maturation of pubertal female rats treated with gonadotropin releasing hormone agonist(GnRHa).Methods At 3 weeks of age,42 female Sprague-Dawley rats(brood) were divided into 7 groups(ST dosage groups,as 5 000 ?g/100 g group,200 ?g/100 g group,100 ?g/100 g group,50 ?g/100 g group,25 ?g/100 g group,solvent control group and blank control group)(n=6).Forty-eight female rats were divided into 8 groups(ST therapeutic duration)(n=6).Rats received 2.5 mg/kg im slow-released GnRHa(triptorelin,as 2 d group,3 d group,5 d group,7 d group,10 d group,13 d group,soluent control group and blank control group) which was repeated every 2 weeks for 2 times,3 days after the 2nd GnRHa(D1),ST dosage groups were subcutaneously administrated ST at the various dosage daily(D1-D13).ST therapeutic duration groups were subcutaneously administrated ST at the dosage of 100 ?g/100 g daily for different duration.All the rats were killed on the D14.On the day of sacrifice,body weight,body length and left tibial length were measured,plasma were taken for determining insulin-like growth factor-1(IGF-1),right tibia were fixed,demineralized and processed for paraffin-embedding.Paraff sections were HE stained for growth plate measurements.proliferating cell nuclear antigen(PCNA) on growth plate was analyzed with immunohistochemistry staining and image.Results 1.In the 5 000 ?g/100 g ST dosage group,the weight,Height and tibial length exceeded than those of the other dosage and control groups(Pa

[Objective] We explore the diagnosis of Smith-Magenis syndrome and its clinical features of children,to raise the domestic awareness of this disease.[Methods] In this study,the child received peripheral blood chromosome microarray analysis,blood routine and urine routine,growth hormone provocation test,insulin-like growth factor Ⅰ and insulin-like growth factor binding protein Ⅲ test,cortisol (8a) test,prolactin test,adrenocorticotropic hormone test,thyroid function test,liver and kidney function test,blood biochemistry test,fasting insulin test,2-hour plasma glucose test,the antibodies and antigens test of hepatitis B.The bone age measurement and the pituitary gland MRI were also performed.We use the above figures to diagnose Smith-Magenis syndrome,assess and observe the condition of the child in Smith-Magenis syndrome.[Results] In this case,the chromosomal microarray analysis revealed a deletion of about 3.6Mb fragments in the chr17p11.2 region,including main functional gene RAI1,which was associated with Smith-Magenis syndrome.According to the clinical manifestations and the result of chromosome microarray analysis,the diagnosis of children with Smith-Magenis syndrome was made clear.[Conclusion] Genetic tests are the standard for diagnosing Smith-Magenis syndrome.When children have special facial features combined with multiple system disorders,early genetic examination is conducive to early diagnosis,and can reduce the time and economic cost.