Objective To describe the sonographic appearance of mesenchymal hamartoma of the liver(MHL)and to analyze the diagnostic value of ultrasound.Methods Eleven surgically and pathologically confirmed cases of MHL from January 2005 to May 2011 in the Beijing Children′s Hospital were retrospectively reviewed.Results Ultrasound examinations showed 9 cystic hamartomas,including 7 multiseptate cystic and 2 monocystic lesions.Of the 7 multiseptate cystic hamartomas,4 had a honeycomb appearance and 3 had irregularly-distributed multiple cysts with varied septations.Of the 2 monocystic hamartomas,1 had a large cystic portion while the other was mainly solid with approximately 4% cystic portion of the tumor.Two cases in this group were solid,presenting with a well-defined homogenous mass.Conclusions Ultrasonography is an effective imaging modality for the diagnosis for MHL.A mixed or a mainly-cystic liver mass found in a child less than 2 years old should be suspicious for MHL.

The aim of the present study was to increase distribution of yuanhuacine in the lungs and achieve the purpose of reducing toxicity and increasing efficiency.Therefore,yuanhuacine was designed to be dry powder inhalers innovatively and directly delivered to the lungs.Accordingly,inhaled lactose was used as a carrier to adsorb yuanhuacine on the surface of lactose.Fine particle fraction (FPF) was utilized as evaluation index to filtrate the optimal prescription for pulmonary administration.Besides,an UHPLC-MS/MS method was established for the analysis of heart,liver,spleen,lung,kidney,brain and reproductive system of rats.Intravenous injection was taken as reference to investigate the distribution of yuanhuacine and calculate relevant targeting parameters.The experimental result indicated that the prescription (rough lactose ∶fine lactose =10 ∶ 1) has the highest FPF,which can be chosen as the most suitable prescription for pulmonary administration of yuanhuacine.Moreover,by comparing the distribution of yuanhuacine through pulmonary administration and intravenous injection,it was found that the concentration of yuanhuacine in the lung tissue was greatly increased by pulmonary administration,which decreased the distribution in heart,liver,spleen,kidney,brain and reproductive system,thus sequentially reducing the toxicity in other tissues and increased the efficiency.

Objective To evaluate the clinical value of regular and dual-time-point 18-fluorodeoxyglucose positron emission tomography-CT(FDG PET/CT)imaging for recurrence and metastasis in esophageal carcinoma(EC)after curative esophagectomy. Methods A retrospective study was done on 48 patients received curative esophagectomy, who underwent FDG PET/CT scans to detect doubtful recurrent or metastatic lesions. The diagnostic accuracy of FDG PET-CT was assessed with the help of pathological findings as well as clinical or follow-up data. Using Fisher's Exact Test from SPSS 11.5 to analyze the data.Results Of the 48 patients, after a median follow-up of 21.5 months, 61 sites of local and regional recurrence or metastasis were finally confirmed in 34 patients. The sensitivity, specificity and accuracy of regular FDG PET/CT imaging in detecting recurrence of all sites were 93.44%, 74.29% and 86.46%respectively. The specificity and accuracy of local recurrence and regional metastasis were 57.14% ,78.95% and 77.78% ,84.62%, respectively. The sensitivity, specificity and accuracy of dual-time-point FDG PET/ CT imaging in detecting local and regional recurrence(96.97% ,96.00% and 96.55%)were higher than those of regular FDG PET/CT(90.90%, 72.00% and 82.76%)and there were significant differences of specificity and accuracy(P = 0.049, P = 0.029). Conclusions Regular FDG PET/CT imaging is highly effective in detecting recurrence and metastasis in EC patients after curative esophagectomy despite the low specificity and accuracy. Dual-time-point FDG PET/CT imaging can elevate the specificity and accuracy.

Objective To investigate the expression of DNA-methyltransferases 3B(DNMT3B)gene in human pancreatic carcinoma and to evaluate its relationship with elinicopathologic parameters.Methods 42 samples of pancreatic carcinoma tissues and 42 para-carcinoma tissues and 10 normal pancreatic tissues were collected and the expression of DNMT3B mRNA and protein Was detected by real.time PCR and immunohistochemistry techniques.Results The expression of DNMT3B mRNA(RQ level)in human pancreatic carcinoma tissues and para-carcinoma tissues,normal pancreatic tissues was 9.4±5.9,1.02±0.71 and 0,respectively,and the difference was statistically significant(P<0.05).The rate of expression of DNMT3B protein in human pancreatic carcinoma tissues,para-carcinoma tissues and normal pancreatic tissues were 83.3%,14.3%and 10%,respectively,and the difference wag also statistically significant(P<0.01).The expression of DNMT3B mRNA correlated significantly with clinical staging,differentiation degree of the tumor and lymph node metastasis(P<0.01 or P<0.05).The expression of DNMT3B protein correlated significantly with the location ofthe tumor and lymph node metastasis(P<0.01 or P<0.05).The expression of DNMT3B mRNA and protein Was not assecimed with age,sex,neural invasion,tumor size,sernm CEA and CA19-9.Conclusions Highly expressed DNMT3B mRNA and protein may indicate the lymph node metastasis and poor prognosis in human pancreatic carcinoma.

Objective To investigate the expression of Fascin mRNA and its protein in human pancreatic carcinoma cell line and pancreatic cancer tissues and to explore the relationship between the expression of Fascin protein and the clinicopathologic parameters. Methods The expression of Fascin mRNA in pancreatic cancer cell lines (SW1990, Patu8988, BxPC3, cfPAC1) were measured by RT-PCR and the expression of Fascin protein in 54 samples of pancreatic career tissues and 42 adjacent normal pancreatic tissues was detected by immunohistochemical method. Results The expression of Fascin mRNA was confirmed in 3 of 4 pancreatic cancer cell lines (SW1990, Patu8988, cfPAC1), but not in the cell line of BxPC3; the rate of positive expression of Fascin protein in pancreatic cancer tissues was 64.81% (35/54) and there was no positive expression in adjacent normal pancreas tissues; the expression of Fascin protein correlated with the differentiation degree (P < 0.01) and with the lymphatic metastasis of the carcinoma (P <0.05), but not with the size and distant metastasis of the carcinoma (P > 0. 05). Conclusions Fascin protein was highly positively expressed in pancreatic cancer tissues, and the expression of Fascin protein may help diagnose pancreatic, carcinoma and predict the malignant degree.

Objective To study the effect of extracellular matrix(ECM)of xenogenic femoral fascia which is a tissue-engineering material in repair of renal trauma.Methods Twenty-four experiment dogs were divided into 3 groups:group 1(n=10),the kidneys were repaired using ECM of xenogenic femoral fascia;group 2(n=10),the kidneys were repaired using self-omentum;group 3(n=4),xenogenic femoral fascia was used as repair materials.The animals were sacrificed separately at 1,2 weeks and 1,2,4 months after renal repair operations in group 1,2.In group 3,the animals were sacrificed separately at 2 weeks and 2 months after renal repair operations.The examinations of blood routine were performed before and after operations immediately,blood creatinine and serum renin were measured before operations and before death.The creatinine clearances of affected and contralateral normal kidneys were evaluated before death and the local areas of renal repair were studied by light and scan electron microscopy.Results In group 1,bleeding stopped rapidly and completely after the entire patch was sutured,only mild adhesions to surrounding tissues were found in various times after operations.As time passed,the repair patch was replaced by smooth neocapsule just like a normal one.In group 2,the bleeding volume in the operations was larger than the other 2 groups.It was diffieult tO separate the kidneys from the surrounding tissues.The wounds gradually contracted because of the scar forming.In group 3,there were severe immunological reactions in the patchs.Conclusion ECM of xenogenic femoral fascia is an ideal tissue-enginee rjng material for renal repair.

Objective: To study the effect of extracellula matrix of xenogenic femoral fascia in repair of renal trauma. Methods: Twelve adult dogs were used and randomly assigned to 6 groups, and the animals were sacrificed separately in 1 and 2 weeks 1,2,4 and 8 months after renal repair operations. The examinations of blood and urine routine, blood urea nitrogen and creatinine, electrolyte and serum renin were performed before and after operations at various times. The creatinine clearances of affected and contralateral normal kidneys were evaluated before death and the local areas of renal repair were studied by light and electron microscopy. Results: Bleeding was stopped completely after the entire patch was sutured, and only mild adhesions to around tissues were found in various times after operations. As time passed, the repair patch was replaced by smooth neocapsule like normal renal capsule. Conclusion: Extracellula matrix of xenogenic femoral fascia might be an ideal tissue-engineering material for renal repair.

Objective To investigate the effect of α-tocopherol on fibrosis of chronic pancreatitis (CP) rat and explore its mechanism.MethodsMale Wistar rats were randomly divided into control group,acute necrotizing pancreatitis (ANP) group,α-tocopherol group.CP was induced by dibutyltindich loride ( 8 mg/kg) infusion into the tail vein.Gastric lavage of α-tocopherol (800 mg/kg body weight,daily) was started 24 hours after dibutyhindich loride infusion for 4 weeks.The rats in ANP and control group received 0.6 ml salad oil gastric lavage.The rats were sacrificed 4 weeks later.Pancreatic tissue was harvested for histological examination and collagen staining,and measurement of the levels of hydroxyproline and malondialdehyde (MDA) of the pancreas were performed.The mRNA expression of transforming growth factor (TGF)-β１ was measured by real time PCR.ResultsAfter gastric lavage for 4 weeks,the pancreatic tissue inflammation,fiber deposition and abnormal structure in rats of α-tocopherol group were greatly reduced.The levels of MDA and hydroxyproline in rats of α-tocopherol group were significantly lower than those in ANP group [ (0.40 ±0.20) vs (1.07 ±0.41) nmol/100mg,(402.49 ±27.62) vs (664.92 ±29.04) μg/g,P＜0.05].The expressions of TGF-β1 mRNA in rats of o-tocopherol group were significantly lower than those in ANP group (2.24 ± 0.89 vs 3.35 ± 0.66,P ＜ 0.05 ).Conclusions Tocopherol gamma can improve pancreatic inflammation and fibrosis by reducing the oxidative stress level and down-regulating the expression of TGFβ1mRNA in rats with CP.

Objective:To explore the expression of insulin-like growth factor-binding protein related protein 1(IGFBP-rP1) gene in children with acute leukemia and its potential significance. Methods:Real-time fluorescence quantitative PCR (RFQ-PCR) method was used for detecting IGFBP-rP1 mRNA expression in bone marrow (BM) cells of 168 children with acute leukemia. The results were compared with those of 30 non-leukemia children in control group. Meanwhile the relationship between IGFBP-rP1 expression level and clinical prognosis was analyzed according to clinical prognostic factors of children acute leukemia. Results:Expression level of IGFBP-rP1 in initial acute leukemia children was significantly higher than that of non leukemia children (P<0.01). It was higher in acute myeloid leukemia (AML) than in acute lymphoblastic leukemia (ALL)(P =0.013). The transcription level of IGFBP-rP1 mRNA in patients who had complete remission (CR) were lowest, which was nearly the same as non-leukemia childish patients. It increased again when leukemia relapsed, which was significantly higher than that in CR. However, as far as ALL was concerned, IGFBP-rP1 expression levels had no significant difference between newly-diagnosed, complete remission, and recurrent groups.Conclusion:IGFBP-rP1 may be involved in the initiation and development of childish leukemia. It has the potential to become a new target for AML treatment.

AIM: To analyze the clinical features of children ocular penetrating trauma,and hope to effectively assist to prevent pediatric ocular trauma METHODS: The data of 145 cases (145 eyes) with ocular penetrating trauma,hospitalized in Xijing Hospital from January 2012 to December 2016,were collected and retrospectively analyzed.All the data of injury factors and environment,age and gender of patients,lesions,treatment and prognosis were detailed studied.RESULTS: In all the 145 pediatric patients with ocular penetrating trauma,accounted for 8.5% of all the ocular trauma patients,there were 95 cases of male,and 50 of female.Penetrating injuries mainly occurred in age of 3-9.The main injuries of ocular perforating in children were scissors,and sharp objects of wooden and iron.The wound was often located in the cornea or the anterior sclera.Traumatic cataract,vitreous hemorrhage and endophthalmitis were the common complications.The visual acuity was severely damaged,and 90 cases (62.1%) of the children recovered better than 0.1 after effective treatment.CONCLUSION: The visual function of pediatric p0atients was seriously threatened after penetrating injuries.However,the damage of vision and the rate of blindness can be reduced effectively after timely and correct diagnosis and treatment.It is the most important that active and effective prevention in keep children away from penetrating injuries.