1.Advances of immunologic dysregulation mechanism in biliary atresia
Chinese Journal of Applied Clinical Pediatrics 2014;29(17):1342-1345
Biliary atresia(BA) is a destructive inflammatory obliterative cholangiopathy of neonates affecting both intrahepatic and extrahepatic bile ducts.BA is more common in east Asia.Genetic susceptibility,viral infections,and immune dysregulation may be related to BA,but immune dysregulation may play a key hole in the pathogenesis of BA.A current view of the pathogenesis of BA is that it may involve both a primary perinatal hepatobiliary viral infection and a secondary generation of an autoimmune-mediated bile duct epithelial injury.The etiology of BA is unknown,but there is evidence for the involvement of immunologic dysregulation mechanisms,which will be discussed in this review.
2.Co-treatment of endothelial progenitor cells and pioglitazone improves kidney function in diabetic rats
Song WANG ; Xisheng ZHENG ; Shan WANG ; Fang FANG
Chinese Journal of Tissue Engineering Research 2017;21(17):2702-2707
BACKGROUND: Pioglitazone is a common hypoglycemic drug capable of improving proliferation and activation, and inhibiting apoptosis of endothelial progenitor cells (EPCs). We speculated that the combined use of pioglitazone and EPCs transplantation could have significant improving effects on hyperglycemia and kidney function after diabetes mellitus.OBJECTIVE: To investigate the improving effect of EPCs transplantation combined with pioglitazone treatment on the kidney function of diabetic rat models.METHODS: The 15 of 75 Wistar rats were randomly selected and served as normal control group (no treatment). Animal models of type 1 diabetes mellitus were made in the rest 60 rats through the intraperitoneal injection of 40 mg/kg streptozotocin for continuous 5 days. The human EPCs (labeled by CM-Dil) were recovered, cultured and preserved until transplantation. After 4 weeks of modeling, the 60 rat models were randomly divided into model group (PBS injection), pioglitazone group, EPCs transplantation group and combined treatment group, followed by tail vein injection of EPCs suspension and/or intragastric administration of 20 mg/kg pioglitazone for continuous 4 days. After 8 weeks of treatment, the levels of glucose, insulin and creatinine in serum, urea nitrogen and urine protein during 24 hours were determined. The number and distribution of EPCs labeled by CM-Dil were detected by fluorescence microscope, the apoptosis in kidney cells was tested by TUNEL method, and the kidney weight/body weight ratio in rats was calculated.RESULTS AND CONCLUSION: Compared with the model group, the blood glucose and serum creatinine levels and the urea nitrogen and urine protein concentrations during 24 hours were significantly decreased (P < 0.05), and the seruminsulin level was significantly increased (P < 0.05) in the pioglitazone and EPCs transplantation groups. These biochemical indexes in the combined treatment group were more significantly altered compared with the model group (P< 0.01). The kidney weight to the body weight ratio was lowest in the combined treatment group and lower in the pioglitazone and EPCs transplantation groups followed by the model group (P < 0.05). The order of apoptotic kidney cells labeled by TUNEL was as follows: model group > pioglitazone group > EPCs transplantation group > combined treatment group (P < 0.05). To conclude, the EPCs transplantation combined with pioglitazone treatment can decrease the blood glucose and serum creatinine levels and urea nitrogen and urine protein concentrations, improve the serum insulin level, reduce cell apoptosis in the kidney, and remit the kidney dysfunction of diabetic rats to a certain extent.
3.Clinical Significance of FGFR1OP and p57 (Kip2) Proteins in Gliomas: An Immunohistochemical Study
Yonggang TAN ; Wei ZHENG ; Hao WANG ; Huawei ZOU ; Fengping SHAN
Chinese Journal of Clinical Oncology 2009;36(23):1367-1369
Objective: To investigate the effects of FGFR1OP and p57/Kip2 proteins on the genesis and progression of gliomas and their clinical significance. Methods: The expression of FGFR1OP and p57/Kip2 in 54 glioma specimens was detected by SP immunohistochemical technique. The relationship between the ex-pression levels of those proteins and various clinical pathologic factors was evaluated. Results: The expres-sion of FGFR1OP and p57/Kip2 was found in 66.7% and 44.4% gliomas, respectively. The OD value of FG-FR1OP was 0.131±0.010 in high grade gliomas, and 0.118±0.010 in low grade ones, with a statistical signifi-cance (t=-5.497, P=0.000), showing that higher expression of FGFR1OP was significantly associated with glo-ma cell differentiation. The OD value of p57/Kip2 was 0.156±0.008 in high grade gliomas, and 0.165±0.006 in low grade ones, with a statistical significance (t=0.296, P=0.014), showing that lower p57/Kip2 expression was correlated with high grade gliomas. FGFR1OP was negatively correlated with p57/Kip2 in gliomas (r=-0.732, P<0.01). Conclusion: Increased expression of FGFR1OP and/or decreased expression of p57/Kip2 may play an important role in the genesis and progression of gliomas and may indicate a poor prognosis.
5.Analysis of phenotype and genotype in a Chinese pedigree with inherited prothrombin deficiency resulted from a homozygous mutation Tyr510Asp.
Yan-hui JIN ; Ming-shan WANG ; Fang-xiu ZHENG
Chinese Journal of Hematology 2012;33(7):587-589
Adolescent
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Adult
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Amino Acid Sequence
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Genotype
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Homozygote
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Humans
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Hypoprothrombinemias
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etiology
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genetics
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Male
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Middle Aged
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Molecular Sequence Data
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Mutation
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Pedigree
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Phenotype
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Young Adult
6.Advances in Regulatory Mechanisms of Astaxanthin Accumulation in Phaffia rhodozyma
Li-Zhuang JIA ; Yuan-Shan WANG ; Yu-Guo ZHENG ;
Microbiology 1992;0(01):-
The astaxanthin synthesized by Phaffia rhodozyma is a commercially valuable carotenoid. Related advances in the biosynthetic pathway of astaxanthin and the regulatory mechanisms of biosynthesis in Phaffia rhodozyma in recent years were reviewed.The innovating research aspects in related fields in China were also proposed.
7.Malignant phyllodes tumor of the prostate (a case report and literature review)
Dong WANG ; Shan ZHENG ; Jianhui MA ; Al ET
Chinese Journal of Urology 2001;0(10):-
Objective To evaluate the clinical and pathological characteristics and treatment of malignant phyllodes tumor of the prostate. Methods A 60 year old male patient with malignant phyllodes tumor of the prostate was reported.The complaints consisted of dysuria,intermittent gross hematuria for 1 year,and recurrent symptoms after TURP for 2 months.The enlarged prostate was 5 cm?6 cm and palpated softly and smoothly by DRE,and heterogeneous by CT.His serum PSA level was 1.25 ng/ml.Sarcoma of the prostate was suspected and radical prostatectomy was performed on him. Results The pathology showed a special type of epithelial stromal tumor like cystosarcoma phyllodes of the mammary gland. Microscopically, the tumor was composed of cystically dilated ducts with leaf like stroma projections in the lumen.The stroma cell proliferated obviously with atypia and high mitotic rate,and the epithelial cell also proliferated but with no atypia and no mitosis.The seminal vesicle and bladder neck had tumor infiltration and the diagnosis of malignant phyllodes tumor of the prostate was confirmed.The tumor margin was negative.With immunohistochemical staining,the stromal cells were positive for vimentin,but negative for actin,with the epithelial cells positive for CK,PSA and AE1/AE3,and the basal cells positive for CK34BE12.The patient had tumor recurrence after 6 months,but refused to further treatment and was followed up till now. Conclusions Malignant phyllodes tumor of the prostate is rare but can be diagnosed properly based on clinical and pathological features.Radical prostatectomy is considered to be the most reliable treatment.
8.miR-150 deletion affects breeding and hematologic parameters of mice
Quanhui ZHENG ; Feng TIAN ; Wenting LI ; Qiuru ZHANG ; Shan WANG
Chinese Journal of Immunology 2016;32(10):1409-1412
Objective:To investigate the effect of miR-150 gene deletion on the breeding and hematologic parameters of mice. Methods:The nest litter size,wean rate and weight changes of miR-150 knock out (miR-150ko) and C57BL/6J mice were com-pared. The hematology indexes were analyzed by automated blood cell counter, the serum biochemical parameters were analyzed by automatic biochemical analyzer. Results:The nest litter size and wean rate of miR-150ko mice were significantly decreased compared with that of C57BL/6J mice. The number of total white blood cells,intermediate cells,neutrophils,and the percentage of neutrophils and intermediate cells were significantly increased in miR-150ko mice compared with that of C57BL/6J mice. However,the number and per-centage of platelets and lymphocytes decreased significantly in miR-150ko mice. In addition,the levels of serum glucose and TC were in-creased significantly in miR-150ko mice compared with that of C57BL/6J mice. Conclusion: miR-150 gene deletion impairs the breeding and has complex impact on hematologic parameters of mice.
10.Effect of different hemostatic methods on ovarian function for patients undergoing laparoscopic ovarian endometriosis cyst enucleation
Jiangjing SHAN ; Yuanyuan ZHENG ; Qiyun LU ; Yungen WANG ; Huiya ZHANG
Chinese Journal of Endocrine Surgery 2016;10(2):170-173,177
Objective To explore the effect of different hemostatic methods on ovarian function in la-paroscopic ovarian endometriosis cyst enucleation. Methods 200 cases of stage I and II ovarian endometriosis cyst admitted to our hospital from Jan. 2012 to Apr. 2014 were selected. All patients underwent conventional la-paroscopic ovarian endometrial endometriosis cyst enucleation. According to intraoperative hemostasis methods, patients were divided into 3 groups: suture group (n=70), electric coagulation group (n=70), and ultrasonic scalpel group (n=60). Follicle-stimulating hormone (FSH) and antibody forming cells (AFC) on admission and at 1, 3, 6, and 12 months after surgery were recorded. Peak systolic blood flow of ovarian stromal artery (PSV) was also observed. Results FSH for all the three groups were improved compared with that on admission, and the difference had statistical significance (P<0.05). FSH for the suture group was significantly lower than that in the electric coagulation group and ultrasound knife group at 1, 3, 6, and 12 months after operation. The difference had statistical significance (P<0.05). AFC at one month after surgery had no statistical significance between the 3 groups (P>0.05). however, AFC of the suture group at 3, 6, and 12 months after surgery was significantly im-proved compared with those of the the electric coagulation group and ultrasound knife group. The difference had statistical significance (P<0.05). Vaginal type B ultrasonic examination after operation showed that PSV of the su-ture group was higher than that of the electric coagulation group and ultrasound knife group at the second menstru-ation and at the 6-month menstruation after surgery. The difference of PSV between the 3 groups had statistical significance (P<0.05). Conclusion Compared electric coagulation hemostasis and ultrasonic scalpel hemostasis, the suture method can reduce damage of ovarian function in patients with ovarian endometriosis cyst, which is worth to promote.