Objective To evaluate the effects of external substance P (SP) on scalding wound healing and neovascularization.Methods Eighty-four Wistar rats were induced into diabetic models by intraperitoneal injection of streptozotocin (STZ), and deep partial thickness scalding wound on the back with diameter of 2 cm was prepared. Rats were randomly divided into experiment group (n=42, local injection of SP) and control group (n=42, local injection of PBS). The process of wound healing was observed, and the percentages of wound closure were calculated on D0, D1, D3, D7, D10, D14, D21 post scald. The expression of CD31, surface marker of neovascular endothelial cells, was detected within the wound sites by immunohistochemical staining, and the microvessel density was calculated. Results The percentage of wound closure in experiment group was significantly higher than that in control group on D7 post scald [(42.69±3.26) % vs (30.24±1.17)%, P<0.01]. Immunohistochemical detection revealed that the expression of CD31 and the microvessel density in experiment group were significantly higher than those in control group from D7 post scald (P<0.01). ConclusionExternal SP may promote scalding wound healing in diabetic rats, the mechanism of which may be associated with upregulation of expression of CD31 and acceleration of neovascularization.

Objective To study the effects of granulocyte-macrophage colony stimulating factor (GM-CSF) on the expression of vascular endotllelial growth factor (VEGF) in human dermal fibroblast. Methods In vitro human dermal fibroblasts in good status were incubated with GM-CSF (GM-CSF group) or non-GM-CSF (control group) culture medium for different periods of time. The mRNA, protein expression of VEGF in derma fibroblast were determined by reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting, respectively, and the secretion of VEGF in supernatant was measured by enzyme linked immunosorbant assay (ELISA). Results The expression of VEGF mRNA from dermal fibroblasts was increased significantly after l or more hours of incubation with GM-CSF comparing with the control (P＜0.05). 6 hours of stimulation by GM-CSF caused maximal expression of VEGF mRNA. The expression of VEGF protein in dermal fibroblasts was increased from 12 hours and was peaked at 24 hour after stimulation by GM-CSF. VEGF protein from the supernatant of the dermal fibroblasts was also raised persistently from 12 hour after stimulation by GM-CSF and was improved remarkably compared with the control. Conclusions GM-CSF can up-regulate directly the expression of VEGF in human derma fibroblast, which may be one of the mechanisms that GM-CSF accelerates neovascularization in wound healing.

Child ; Chromosome Duplication ; genetics ; Craniofacial Abnormalities ; diagnosis ; genetics ; Facies ; Genetic Diseases, X-Linked ; diagnosis ; genetics ; Humans ; Intellectual Disability ; diagnosis ; genetics ; Male ; Methyl-CpG-Binding Protein 2 ; genetics ; Oligonucleotide Array Sequence Analysis ; Polymorphism, Single Nucleotide ; Sex Chromosome Disorders ; diagnosis ; genetics

OBJECTIVESTo observe the expression of betaig-h3 in normal cornea and keratoconus and to elucidate the role of extracellular matrix in keratoconus.

METHODSIn situ hybridization was used to detect the expression of betaig-h3 in the cornea. The cDNA library was screened with human betaig-h3 cDNA probe to locate betaig-h3 mRNA in cells.

RESULTSExpression of betaig-h3 was found mainly in the stroma of the normal cornea and keratoconus, but decrease depending on the degree of keratopathy. In some serious cases, no expression signal was detected. The strongest expression was seen at the border of the normal region and keratoconus.

CONCLUSIONSbetaig-h3, the structural component of the extracellular matrix, can affect cell adhensiveness in the development of corneal fibrous interstitial organization. During the development of keratoconus, decreasing levels of betaig-h3 cause the diminution of corneal steadiness, which is related to formation of keratoconus.

Cornea ; metabolism ; Extracellular Matrix Proteins ; Humans ; Keratoconus ; metabolism ; Neoplasm Proteins ; genetics ; RNA, Messenger ; analysis ; Transforming Growth Factor beta ; Wound Healing

24 patients with chronic hepatitis B were treated with interleukin-2 activated human peripheral blood lymphocytes (IAPBL). 23 patients served as control. The results showed that HBeAg disappeared in 54.2% of IAPBL group, in comparison with 17.4% of the controls (P

Retinoblastoma (Rb) is one of the most common eye malignancies occur in childhood. The crucial roles of non-coding RNAs, particularly long non-coding RNAs (lncRNAs) and microRNAs (miRNAs), have been widely reported in Rb progression. In the present study, we found the expression of lncRNA T-cell leukemia/lymphoma 6 (TCL6) was significantly downregulated in Rb tissues and cell lines. Knockdown of lncRNA TCL6 promoted cell proliferation while reduced cell apoptosis in Rb cells. Moreover, lncRNA TCL6 serves as a sponge for miR-21, a previously-reported oncogenic miRNA in Rb, by direct targeting to negatively regulated miR-21 expression, therefore modulating Rb proliferation through miR-21. TCL6 overexpression inhibited Rb cell proliferation while miR-21 overexpression exerted an opposing effect; the effect of TCL6 overexpression was partially attenuated by miR-21 overexpression. PTEN/PI3K/AKT signaling pathway was involved in lncRNA TCL6/miR-21 axis modulating Rb cell proliferation. Taken together, lncRNA TCL6 serves as a tumor suppressor by acting as a sponge for miR-21 to counteract miR-21-mediated PTEN repression.
Apoptosis ; Cell Line ; Cell Proliferation ; MicroRNAs ; Porifera ; Repression, Psychology ; Retinoblastoma ; RNA, Long Noncoding ; RNA, Untranslated ; T-Lymphocytes

Objective:To identify the risk factors for preoperative full stomach in the patients undergoing emergency surgery.Methods:American Society of Anesthesiologists physical status Ⅰ-Ⅲ patients of both sexes, aged≥18 yr, with body mass index ≥15 kg/m 2, scheduled for elective emergency surgery, were included.The operation bed was adjusted to 30° head-high and feet-low position.Ultrasound images of gastric antrum were observed in the right decubitus position, and the ultrasonic images were evaluated qualitatively and quantitatively.The ultrasonic image was qualitatively assessed as having empty antrum, liquid or solid.Three images were obtained during the diastolic period of gastric antrum when quantitative assessment was performed.The longest diameter (D1) and the widest diameter (D2) of the images were measured three times and averaged to calculate the cross-sectional area of gastric antrum [CSA=(D1×D2×π)/4]. The gastric volume was calculated [GV=27.0+ (14.6×CSA)-(1.28×age)]. When the result was<0, the gastric volume was 0.GV/body weight was calculated, and GV/body ≤1.5 ml/kg was considered as empty stomach.When gastric content was solid or GV/body weight>1.5 ml/kg, it was considered as full stomach.Patients were divided into 2 groups according to whether they presented with a full stomach: empty stomach group (group E) and full stomach group (group F). The patients′ fasting time, coexisting diseases and types of operation were recorded.Multivariate logistic regression analysis was performed on the indicators with statistically significant differences between groups to identify the risk factors for preoperative full stomach in the patients undergoing emergency surgery. Results:One hundred and seventy-nine cases were finally included, with 121 cases in group E and 58 cases in group F. Compared with group E, the fasting time was <6 h, and the incidence of coexisting diabetes was increased in group F ( P<0.05). Coexisting diabetes mellitus was an independent risk factor for preoperative full stomach in the patients undergoing emergency surgery ( P<0.05), and OR (95% confidence interval) was 11.968 (2.392-59.870). Conclusion:Coexisting diabetes mellitus is an independent risk factor for preoperative full stomach in the patients undergoing emergency surgery.