1. Effects of silencing Smad ubiquitination regulatory factor 2 on the function of human hypertrophic scar-derived fibroblasts
Zhi ZHANG ; Fang KUANG ; Changling LIU ; Bin CHEN ; Wenbin TANG ; Xiaojian LI
Chinese Journal of Burns 2017;33(3):145-151
Objective:
To explore the effects of silencing Smad ubiquitination regulatory factor 2 (Smurf2) on the secretion of transforming growth factor beta 1 (TGF-β1), alpha-smooth muscle actin (α-SMA), and collagen type Ⅰ by human hypertrophic scar-derived fibroblasts.
Methods:
The human normal skin-derived fibroblasts and hypertrophic scar-derived fibroblasts were cultured with explant culture technique from the normal skin and hypertrophic scar tissue, which was obtained from 9 patients with hypertrophic scars after burn. Two kinds of fibroblasts of the third passage were both divided into 6 groups according to the random number table, with 9 wells in each group. Fibroblasts in blank control group were cultured for 72 h without transfection of any small interfering RNA (siRNA), fibroblasts in negative control group were for cultured for 72 h after transfected with non-target siRNA, fibroblasts in Smurf2 siRNA group were cultured for 72 h after transfected with 100 nmol/L Smurf2 siRNA, fibroblasts in blank control+ TGF-β1 group were cultured for 72 h without transfection of any siRNA and then treated with 10 ng/mL TGF-β1 for 6 h, fibroblasts in negative control+ TGF-β1 group were cultured for 72 h after transfected with non-target siRNA and then treated with 10 ng/mL TGF-β1 for 6 h, fibroblasts in Smurf2 siRNA+ TGF-β1 group were cultured for 72 h after transfected with Smurf2 siRNA and then treated with 10 ng/mL TGF-β1 for 6 h. (1) The protein and mRNA expression levels of Smurf2 of the two kinds of cells in blank control group, negative control group, and Smurf2 siRNA group were assessed by Western blotting and reverse transcription-polymerase chain reaction (RT-PCR), respectively. (2) The content of TGF-β1 in the cell culture supernatant of the two kinds of cells in blank control group and Smurf2 siRNA group was determined by enzyme-linked immunosorbent assay (ELISA). (3) The protein expression levels of α-SMA of the two kinds of cells in the 6 groups were assessed by Western blotting. The content of collagen type Ⅰ in the cell culture supernatant of the two kinds of cells in the 6 groups was determined by ELISA. (4) The mRNA expression levels of α-SMA and collagen type Ⅰ of the two kinds of cells in the 6 groups were assessed by RT-PCR. The sample numbers of each group in the above experiments were all 9. Data were processed with analysis of variance of factorial design and Bonferroni test.
Results:
(1) The protein and mRNA expression levels of Smurf2 of the two kinds of cells in Smurf2 siRNA group were significantly lower than those in blank control group and negative control group (with
2.Mucin profile of the pancreatic mucinous cystic neoplasms.
Yuan JI ; Jian-fang XU ; Tian-tao KUANG ; Yan-nan ZHOU ; Shao-hua LU ; Yun-shan TAN
Chinese Medical Journal 2006;119(4):328-330
Adult
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Aged
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Female
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Humans
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Immunohistochemistry
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Male
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Middle Aged
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Mucin-2
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Mucin-6
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Mucins
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analysis
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Neoplasms, Cystic, Mucinous, and Serous
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chemistry
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Pancreatic Neoplasms
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chemistry
3. The expression of SnoN in human hypertrophic scar fibroblasts and the mechanism of its participation in hypertrophic scar formation
Fang KUANG ; Zhi ZHANG ; Bin CHEN ; Changling LIU ; Yuanyuan ZHAO ; Zhirong XU ; Xiaojian LI
Chinese Journal of Burns 2017;33(10):634-638
Objective:
To investigate the expression of SnoN in human hypertrophic scar fibroblasts and the mechanism of its participation in hypertrophic scar formation.
Methods:
Eight patients with hypertrophic scar after burn in need of surgery were admitted in our unit from January to October 2013, and then hypertrophic scar tissue and normal skin tissue of full-thickness skin donor site resected by surgery of the patients were collected. Hypertrophic scar fibroblasts and normal skin fibroblasts of patients were isolated with method of explant culture and then sub-cultured. Cells of the third to fifth passage were used in the following experiments. (1) The protein expressions of SnoN of hypertrophic scar fibroblasts and normal skin fibroblasts were assessed with Western blotting. (2) The mRNA expressions of SnoN of another batch of hypertrophic scar fibroblasts and normal skin fibroblasts were determined with reverse transcription polymerase chain reaction. (3) Another batch of hypertrophic scar fibroblasts and normal skin fibroblasts were treated with 10 ng/mL transforming growth factor beta1 (TGF-β1) for 30 min, 1 h, 2 h, and 6 h, respectively, and then the protein expressions and mRNA expressions of SnoN of untreated cells and treated cells were detected as above. Data were processed with one way analysis of variance and independent sample
4.Predictors and scoring system for sustained complete response to conventional interferon-alpha therapy on chronic hepatitis B.
Mei-zhu HONG ; Kuang-nan FANG ; Qian-guo MAO ; Wen-qi HUANG ; Ting XIA ; Min-ning SONG ; Ru-mian ZHANG ; Jin-shui PAN
Chinese Journal of Hepatology 2011;19(10):738-742
OBJECTIVETo establish a predictive scoring system which may serve for the prediction of sustained response to conventional interferon-alpha (IFN-alpha) treatment on chronic hepatitis B.
METHODSA total of 474 IFN-alpha treated hepatitis B virus e antigen (HBeAg)-positive patients were enrolled in the present study. The patients' baseline characteristics, such as age, gender, aminotransferases, activity grading (G) of intrahepatic inflammation, score (S) of liver fibrosis, hepatitis B virus (HBV) DNA and genotype were evaluated; therapy duration and response of each patient at the 24th wk after cessation of IFN-alpha treatment were also recorded. A predictive scoring system for a sustained complete response (CR) to IFN-alpha therapy was established based on genetic algorithm. About 10% of the patients were randomly drawn out as the test set. Responses to IFN-alpha therapy were divided into CR, partial response (PR) and non-response (NR). The mixed set of PR and NR was recorded as PR + NR.
RESULTSFor the scoring system, the sensitivity and specificity were 78.8% and 80.6%, respectively.
CONCLUSIONThis SCR scoring system has satisfying prediction efficiency and is easily employed in clinical practice. With this scoring system, practitioners can propose individualized decisions that have an integrated foundation on both evidence-based medicine and personal characteristics.
Adolescent ; Adult ; Antiviral Agents ; therapeutic use ; Child ; Dose-Response Relationship, Drug ; Female ; Hepatitis B, Chronic ; drug therapy ; Humans ; Interferon-alpha ; therapeutic use ; Male ; Middle Aged ; Predictive Value of Tests ; Prognosis ; Sensitivity and Specificity ; Treatment Outcome ; Young Adult
5.Single-puncture Method of Laparoscopic Herniorrhaphy in Children.
Xue-Qiang YAN ; Hou-Fang KUANG ; Nan-Nan ZHENG ; Jun YANG ; Xu-Fei DUAN ; Zhen-Chuang ZHU ; Hong-Qiang BIAN
Chinese Medical Journal 2016;129(16):2015-2016
Child
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Hernia, Inguinal
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surgery
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Herniorrhaphy
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methods
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Humans
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Laparoscopy
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methods