1.Establishment of a tree shrew model of Fusarium keratitis
Yan LI ; Jiejie DAI ; Xiaomei SUN ; Hai LIU ; Zhulin HU
Acta Laboratorium Animalis Scientia Sinica 2017;25(4):420-424
Objective To establish a tree shrew model of Fusarium solani keractitis by injecting Fusarium solani conidia into the corneal stroma.Methods Fusarium solani was inoculated into Sabouraud culture medium and incubated at 26℃ for 7 days.Fungal suspension was collected and the number of spores was adjusted to 1 × 1010 CFU /mL on the blood cell count plate.Forty healthy tree shrews were randomly divided into experimental group (n=30) and control group (n=10).In the experimental group, 50 μL of fungal spore suspension was injected into the cornea center with a 29G needle, and 50 μL saline was injected in the control group.The models were evaluated by anterior segment photography, in vivo confocal microscopy, histopathology, and corneal tissue culture.Results The fungal infiltration, the degree of edema of corneal epithelial and endothelial cells, and the number of mycelium were positively correlated with time.The number of infiltrating inflammatory cells, mainly, neutrophils, reached a peak on the 7th day after modeling.The mycelial growth was parallel to the stromal fibers.After the successful establishment of the model, the corneal tissue culture showed the growth of Fusarium solani.The successful rate of modeling was 86%.Conclusions The tree shrew model of Fusarium solani keratitis is established by injecting spores of Fusarium solani into the cornea.
2.Isolation and identification of two different genotypes of Tupaia orthoreoviruses
Jiansheng LIU ; Yufen TAO ; Xiaofei LI ; Chao LI ; Xiaofei LI ; Xiaomei SUN ; Jiejie DAI ; Hongqi LIU
Acta Laboratorium Animalis Scientia Sinica 2015;(4):365-370
Objective To isolate and identify viruses from fecal samples of tree shrew with diarrhea.Methods Fecal sample supernatant of tree shrew with diarrhea was inoculated to three cell lines ( Vero, LLC-MK2 and KMB17 ) , and the cytopathic effects on the cells were observed.The infectious particles in the culture supernatant were further ana-lyzed by transmission electron microscopy ( TEM) , genomic RNA-PAGE, rotavirus detection kit, amplification of S1 com-plete segment and bioinformatics analysis.Results Constant cytopathic effects were induced in Vero, LLC-MK2 and KMB17 cell lines after three passages of culture.The results from TEM, RNA-PAGE and rotavirus analysis indicated that they belong to reoviruses.Analysis of the S1 segments revealed that the S1 sequence from KMB17 cell culture had the high-est homology with that of prototype isolate T1L (85%nucleotide homology and 90%amino acid homology), therefore this isolate was named as type I reovirus.The other two S1 sequences from LLC-MK2 and Vero cell culture were identical to have 85%nucleotide homology and 92%amino acid homology with the prototype isolate T3D, named as type III reovirus. Phylogenetic analysis indicated that the isolates in this study are evolutionally adapted to tree shrews.Conclusions It is the first report here that 2 genotypes of Tupaia orthoreovirus are isolated and identified from one fecal sample via three cell lines and viral S1-specific primers, which provides useful guidelines for the isolation and identification of other reoviruses from tree shrew or other hosts.
3.Sequence Variation in the Gp120 region of SHIV-CN97001 during in vivo Passage
Qiang LIU ; Guibo YANG ; Yue MA ; Chenli QIU ; Jiejie DAI ; Hui XING ; Yiming SHAO
Virologica Sinica 2008;23(1):8-14
SHIV-CN97001 played an important role in assessing the immune effect and strategy of the AIDS vaccine which included genes of the predominant prevalent HIV-1 strain in China. In this study, SHIV-CN97001 was in vivo passaged serially to construct pathogenic SHIV-CN97001/rhesus macaques model. To identify variation in the gp120 region of SHIV-CN97001 during passage, the fragments of gp120 gene were amplified by RT-PCR from the plasma of SHIV-CN97001 infected animals at the peak viral load time point and the gene distances (divergence, diversity) were calculated using DISTANCE. The analysis revealed that the genetic distances of SHIV-CN97001 in the third passage animals were the highest during in vivo passage. It had a relationship between viral divergence from the founder strain and viral replication ability. The nucleic acid sequence of the V3 region was highly conservative. All of the SHIV-CN97001 strains had V3 loop central motif (GPGQ) and were predicted to be using CCR5 co-receptor on the basis of the critical amino acids within V3 loop. These results show that there was no significant increase in the genetic distance during serial passage, and SHIV-CN97001 gp120 gene evolved toward ancestral states upon transmission to a new host. This could partly explain why there was no pathogenic viral strain obtained during in vivo passage.
4.Expressions of hypoxia-inducible factor 1α and glucose transporter type 1 in psoriatic lesions
Jing YANG ; Juan TAO ; Jiejie LU ; Yan LI ; Yeqiang LIU ; Yating TU
Chinese Journal of Dermatology 2009;42(3):154-156
Objective To investigate the expression of glucose transporter type 1(GLUT-1)and hypoxia-inducible factor 1 (HIF-1)α in psoriatic lesions,and to explore their correlations with keratinocyte proliferation.Methods Biopsy specimens were obtained from 30 patients with psoriasis and 20 normal human controls.Immunohistochemistry and Western blotting were used to examine the protein expression of GLUT-1 and HIF-1α in these specimens.Results GLUT-1 and HIF-1α were mainly expressed in the basal layer of the control skin,but throughout the whole epidermis of psoriatic lesions.A significant increase was observed in the expression of GLUT-1 and HIF-1α in psoriatic lesions compared with that in the control skin (botb P<0.01).In the case of psoriatic lesions,both the expression of GLUT-1 and HIF-1α was positively correlated with that of Ki-67(r=0.70,0.81 respectively,both P<0.01),and positive correlation was also found between the expression of GLUT-1 and HIF-1α(r=0.85.P<0.01).Conclusion Our data suggest that uprcgulation Of GLUT-1 and HIF-1α expression in psoriatic lesions might contribute to the proliferation of keratinocytes and psoriasis development.
5.Research progress of tree shrew models of viral hepatitis and modeling strategy
Yiquan PANG ; Yue FENG ; Xiaomei SUN ; Li LIU ; Jiejie DAI ; Xueshan XIA
Acta Laboratorium Animalis Scientia Sinica 2014;(2):95-110
Viral hepatitis is a major liver disease caused by virus infection .Viral hepatitis is popular in China , mainly caused by hepatitis B and hepatitis C viruses .Experimental animal model is a necessary platform for the research on mechanism of viral infection and pathogenicity , for treatment and vaccine development .Up to date, a great progress in the development of viral hepatitis animal models has been achieved in spite of the most of findings are limited to hepatitis B and C.Here, we summarize the recent findings of viral hepatitis animal models , focusing on the tree shrew animal model and its modeling strategy .
6.Comparison of structural characteristics and anticoagulation activity of enoxaparin sodium with different degree of 1,6-anhydro derivatives.
He ZHU ; Youjing LIü ; Xianwei HAN ; Shilong LIU ; Jiejie HAO ; Xiaoliang ZHAO ; Guangli YU
Acta Pharmaceutica Sinica 2014;49(7):1049-53
The fine structure of enoxaparin sodium samples with different degree of 1,6-anhydro derivatives were analyzed with polyacrylamide gel electrophoresis, high performance liquid chromatography, ultraviolet spectroscopy, infrared spectroscopy and nuclear magnetic resonance spectroscopy. A further study of anticoagulation activity of enoxaparins was performed, including those on their inhibition activities of coagulation factor Xa (FXa) and thrombin (FIIa). The results showed that the anti-FXa and -FIIa activities of enoxaparins with different degree of 1,6-anhydro derivatives (20.0%-39.7%) with similar structure characteristics, had decreasing tendency when the degree of 1,6-anhydro derivatives increased. Especially, the anti-FXa activity was sensitive to the change of the degree of 1,6-anhydro derivatives.
7.Multivariate analysis of prognostic makers in patients with nasopharyngeal carcinoma intreatment of radiotherapy combined with induction chemotherapy.
Jiejie LIU ; Shuna LI ; Yan WANG ; Yawei SHI ; Lihua ZHU ; Chaoyang WU
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2015;29(10):937-940
OBJECTIVE:
To observe the therapeutic effect of radiotherapy combined with TPF in patients with nasopharyngeal carcinoma (NPC) and to explore the influencing factors on prognosis of NPC.
METHOD:
A retrospective analysis of 144 patients with nasopharyngeal carcinoma receiving radiotherapy combined with chemotherapy, from January 2006 to December 2011, was conducted. The survival analysis in patients with nasopharyngeal carcinoma were performed. The impact of age, sex, clinical stage, alpha-fetoprotein (AFP), carcinoembryonic antigen (CEA), lactate dehydrogenase (LDH), homocysteine (Hcy), uric acid, NK cell proportion, T cell proportion, Carbohydrate antigen on survival time was observed with univariate and multivariate methods.
RESULT:
By the last follow-up, 9 cases were lost . The follow-up rate was 93.75 percent and the average follow-up time were 54.67 ±17.17 (37-88) months. The age, clinical stage, LDH, proportion of T cells and NK cells were independent factor in patients with NPC with univariate analysis (P < 0.01). COX regression multivariate analysis revealed that age, clinical stage and LDH were strong risk factor affecting prognosis (P < 0.01) and the proportion of NK cells and T cells were protective factors (P < 0.01).
CONCLUSION
Radiotherapy combined with TPF is more effective than radiotherapy alone in patients with nasopharyngeal carcinoma . Age, clinical stage and LDH may adversely influence the disease prognosis, and NK cells and T cell proportion may act as protective factors.
Age Factors
;
Biomarkers, Tumor
;
Carcinoma
;
Combined Modality Therapy
;
Follow-Up Studies
;
Humans
;
Induction Chemotherapy
;
Multivariate Analysis
;
Nasopharyngeal Carcinoma
;
Nasopharyngeal Neoplasms
;
diagnosis
;
therapy
;
Neoplasm Staging
;
Prognosis
;
Radiotherapy
;
Retrospective Studies
;
Risk Factors
;
Survival Analysis
8. Effect of naked-eye assessment on the diagnosis of ultrasound-guided fine needle aspiration in thyroid nodules
Dan ZHOU ; Weiwei ZHAN ; Yijie DONG ; Yunyun HU ; Zhenhua LIU ; Wei ZHOU ; Jiejie YAO ; Minjing MAO
Chinese Journal of Ultrasonography 2018;27(6):491-495
Objective:
To evaluate the feasibility and efficacy of naked-eye assessment (NA) of ultrasound-guided fine needle aspiration cytology(US-FNAC) smears, which was performed by a trained non-cytological physician.
Methods:
A total of 290 smears of FNAC in 143 thyroid nodules were used to evaluate the value of NA by an assistant with more than two years experience of intervention with ultrasound guidance. NA results such as the background of smear (bloody/non-bloody), thickness (thick/thin), as well as the contents (granulated/non-granulated) were recorded. The correlation between NA and cytological results was analyzed. Number of cells under microscopy, the non-diagnostic rate, and the significance between benignity and malignancy with different features of specimens were compared.
Results:
There was no significant difference between the NA background and cytological findings(
9.Detection of EBV-LMP1 antibodies in sera and clinical significance in the patients with nasopharyngeal carcinoma.
Dandan TAO ; Jiejie XU ; Renjie CHEN ; Yuan MAO ; Genyan LIU ; Mingzhe QIAO ; Xi CHEN ; Meiping LU ; Jingjing DING
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2011;25(9):401-405
OBJECTIVE:
To detect the levels of Epstein-Barr virus (EBV) latent membrane protein 1 Antibodies (LMP1-Ab) in nasopharyngeal carcinoma (NPC)sera and discuss the clinical significance of this test in diagnosis, prognosis, and immune-targeted therapy of NPC.
METHOD:
Enzyme-linked immunosorbent assay (ELISA) and Western blot method were used to detect the LMP1-Ab levels in 61 NPC sera, 30 nasopharyngitis sera, and 55 normal sera. The relationship between the LMP1-Ab level and clinical and pathological features of NPC was analyzed.
RESULT:
ELISA test showed that LMP1 antibodies level was significantly higher in nasopharyngeal carcinoma group than those in nasopharyngitis group and in healthy group and there were statistical significances (all P<0.05). In SNPC group, the LMP1-Ab level was not related to the pathological grade and cervical lymph node metastases (P>0.05). Western blot test revealed that the expression of LMP1 antibodies was higher in NPC sera than in nasopharyngitis sera and in normal sera.
CONCLUSION
LMP1-Ab level was higher in nasopharyngeal carcinoma group than in nasopharyngitis group and in normal group. Therefore, LMP1 may be considered as a tumor correlated antigen to help the diagnosis and immune-targeted therapy of NPC.
Adolescent
;
Adult
;
Aged
;
Antibodies, Viral
;
blood
;
Carcinoma
;
Case-Control Studies
;
Enzyme-Linked Immunosorbent Assay
;
Female
;
Herpesvirus 4, Human
;
immunology
;
Humans
;
Male
;
Middle Aged
;
Nasopharyngeal Carcinoma
;
Nasopharyngeal Neoplasms
;
blood
;
pathology
;
Viral Matrix Proteins
;
immunology
;
Young Adult
10.Addendum: A phase II trial of cytoreductive surgery combined with niraparib maintenance in platinum-sensitive, secondary recurrent ovarian cancer: SGOG SOC-3 study
Tingyan SHI ; Libing XIANG ; Jianqing ZHU ; Jihong LIU ; Ping ZHANG ; Huaying WANG ; Yanling FENG ; Tao ZHU ; Yingli ZHANG ; Aijun YU ; Wei JIANG ; Xipeng WANG ; Yaping ZHU ; Sufang WU ; Yincheng TENG ; Jiejie ZHANG ; Rong JIANG ; Wei ZHANG ; Huixun JIA ; Rongyu ZANG
Journal of Gynecologic Oncology 2022;33(4):e63-