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Angiogenesis is a complex process and plays an important role in tumor growth and metastasis.Among the factors of angiogenesis, vascular endothelial growth factor (VEGF) is most widely studied factor in the regulation of tumor angiogenesis.MicroRNAs (miRNAs) are a class of small non-coding RNAs that play a vital role in tumor angiogenesis and metastasis through post-transcriptional regulation.They can function in diverse biological processes via regulating multiple pathways, such as VEGF, to promote or inhibit tumor angiogenesis.Uveal melanoma (UM) is the most common primary intraocular malignant tumor.It seriously threatens vision, eyeballs and even life of patient.Since angiogenesis plays an important role in UM tumor growth, invasion and metastasis, understanding the regulation of tumor angiogenesis has become important for tumor therapy.In this review, we summarized the regulatory role of miRNAs and their targets in tumor angiogenesis and discussed the potential therapeutic interventions of miRNAs for tumor angiogenesis, including nanoparticles and cell-derived membrane vesicles.
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Objective To investigate the possible association of circulating components of GH-IGFs-IGFBPs system with the GHR-exon 3 genotype in idiopathic short stature (ISS) children. Methods Genomic DNA was extracted and isolat-ed from peripheral leukocytes in 108 ISS children. GHR-exon 3 polymorphism was analyzed with multiplex poly-merase chain reactions (PCR) assay. According to the results of genotype, ISS children were divided into GHRfl group and GHRd 3 group. The height and weight were recorded in two groups. The body mass index (BMI) and BMI standard deviation score (SDS) were measured. The serum levels of insulin-like growth factor (IGF)-1, IGF-binding protein (IGFBP)-3, IGF-1 SDS and IGFBP3 SDS were calculated. GH stimulation test was used to measure the serum GH peak value. Fifty-five ISS chil-dren were treated with recombine human GH [0.15 IU/(kg·d)] for three months to analyse the association of IGF-1 response of GH treatment and genotypes. Results There were 63 GHRfl and 45 GHRd3 in 108 ISS children. There were no signifi-cant differences in BMI, IGF-1, IGFBP3, GH peak, IGF-1 SDS and IGFBP3 SDS between two groups (P>0.05). Multiple stepwise regression analysis showed that age, IGFBP3, lg (BMI) and lg (GH peak) were influencing factors of lgIGF-1 (P<0.05). In 55 ISS children treated with rhGH, there were 34 cases of GHRd3. The differences of △IGF-1 and △IGF-1 SDS were higher in GHRd3 group than those of GHRfl group (n=21). Conclusion The GH sensitivity may be a risk factor in ISS children, which may not be related with GHR polymorphism.
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To explore the long-term effects of L-T4 treatment on physical and intellectual development in neonatal congenital hypothyroidism(CH) patients during adolescence and adulthood.14 out of 15 patients,aged 15-31 years old,including 9 males and 6 females,were diagnosed by neonatal screening for congenital hypothyroidism.(1) By treatment for 10 years until adolescence,return visit ages were 12.6-18.1 years old,the height of patients were normal in 14 cases,weight normal in 8 cases,and overweight in 6 cases.Only the first patient of neonatal screening for congenital hypothyroidism height 154 cm,weight of 43.5 kg,which were below the standard.Bone age by X-ray showed 9 normal,1 case of rapid development,4 cases with left wrist bone age retardation.IQ combined Raven's test(CRT) showed 3 cases excellent,7 cases normal,3 cases borderline,and 2 cases low.(2)Treatment for more than 20 years to adulthood,9 cases of return visits (8 cases were screened out) by 23-31 years of age,with 5 males and 4 females,height and bone age were all normal,normal weight,only 2 cases BMI slightly overweight.As to IQ,good were in 7 cases,mild retardation in 2 cases.7 patients received above average education;they were all employed except one.The employed patients were all capable for their jobs.In summary,screening out of 8 patients,1 case were of mild mental retardation (12.5％);while 7 patients(87.5％),both in physical and intellectual levels were as those of the normal population.
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Objective:To study the relationship of expressions of E-cadherin and ?-catenin proteins and gastric mucosa intestinal metaplasia and gastric carcinoma.Methods:The immunohistochemical Envision method was used to determine the expressions of E-cadherin and ?-catenin in 30 cases of simple intestinal metaplasia(SIM) ,38 cases of atypia intestinal metaplasia(AIM) and 55 cases of gastric carcinoma.Results:The reduced expression rates of E-cadherin and ?-catenin in gastric carcinoma were significantly higher than that in SIM(P0.05) .Conclusion :E-cadherin and ?-catenin proteins take part in the transformation from intestinal metaplasia to carcinoma in gastric mucosa,AIM is a kind of precancerosis of gastric carcinoma.
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OBJECTIVE To investigate the risk factors and prevention of episiotomy infection.METHODS Retrospective analysis on 105 episiotomy infection cases and 210 episiotomy cases without infection which were chosen randomly by 1∶2 Logistic regression and single factor analysis was taken.RESULTS Infection rate of episiotomy was 1.23%.Single factor analysis showed there were nine factors correlated with episiotomy infection.Taking prophylactic antibiotic couldn′t prevent infection,showing no correlation with episiotomy infection(P
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Objective:To study the expressions of c-erbB-2 and ki67 proteins in simple intestinal metaplasia(SIM),atypical intestinal metaplasia(AIM) and gastric adenocarcinoma,and the relationships among them.Methods:The immunohistochemical EnVision method was used to determine the expressions of c-erbB-2 and ki67 in 27 cases of SIM,26 cases of AIM and 37 cases of gastric adenocarcinoma.Results:The positive rates of c-erbB-2 and ki67 in gastric adenocarcinoma were significantly higher than that in SIM(P0.05).Conclusion:The high expression of c-erbB-2 and ki67 in AIM and gastric adenocarcinoma suggested that AIM may play an important role in gastric adenocarcinoma.The AIM is one kind of precancerosis of gastric adenocarcinoma.
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Objective: To study the relationship of expression of CDX2 and PTEN proteins and gastric metaplasia. Methods: Immunohistochemistry Envision method was used to detect the expression of CDX2 and PTEN proteins in simple intestinal metaplasia (SIM), atypical intestinal metaplasia (AIM) and gastric adenocarcinoma. Results: The positive rates of CDX2 in SIM, AIM and gastric adenocarcinoma was 82.6%, 51.5% and 36.4% respectively. The expression of CDX2 in gastric adenocarcinoma was significantly lower than that in SIM(P0.05). The positive rates of PTEN in SIM, AIM and gastric adenocarcinoma were 86.9%,75.8%and 47.7% respectively and the difference between SIM and gastric adenocarcinoma was significant (P