2.Characteristics and risk factors of lymph node metastasis in colorectal neuroendocrine neoplasm
Yun LI ; Sui NI ; Zhangsheng XIAO ; Yingjie WU ; Jiao QIAN
Chinese Journal of General Surgery 2014;29(10):745-748
Objective To investigate the features and risk factors associated with lymph node metastasis in colorectal neuroendocrine neoplasm.Methods Clinical and pathological data of 63 patients with colorectal neuroendocrine neoplasm treated in Yinzhou People's Hospital between June 1997 to December 2012,were analyzed retrospectively.Comparisons of categorical data and univariate analysis of risk factors of lymph node metastasis were conducted by x2 test,multivariate analysis was conducted by Logistic regression analysis.Results Of the 63 patients the rate of regional lymph node metastasis was 30% (19/63) with 58% limited to para-intestinal lymph nodes in 11 cases,26% limited to mesenteric lymph nodes in 5 cases,and 16% limited to mesenteric root central lymph nodes in 3 cases.No metastasis exceeding central lymph nodes was observed.According to univariate analysis,tumor size,depth of invasion,ulceration in mucous membrane,invasion of lymphatic vessel and pathological grading suggested by WHO were related to regional lymph node metastasis (P < 0.01).Multivariate regression analysis revealed that tumor size,invasion of lymphatic vessel and pathological grading were independent risk factors for lymph node metastasis in colorectal neuroendocrine neoplasm (P < 0.05).Conclusions Colorectal neuroendocrine neoplasm with larger tumor size,invasion of lymphatic vessel or higher grade (G2,G3) has high risk of regional lymph node metastasis.
3.Detection of IL-4、IFN-?、and TGF-?1 in Patients with Dermatomyositis/Polymyositis
Aiming CHEN ; Qing LIU ; Boyuan QIAN ; Qunxin PENG ; Yun WU
Chinese Journal of Dermatology 2003;0(09):-
Objective To investigate the polarization of Th1/Th2/Th3cell function of dermatomyositis/polymyositis(DM/PM).Methods The culture supernatant levels of IL-4,IFN-?,TGF-?1that were produced by the peripheral blood mononuclear cells(PBMC)were detected by Sandwich ELISA in23DM/PM patients(DM18,PM5)and17healthy subjects.Results The level of IFN-?(168.17?218.35ng/mL)produced by PBMC from the patients of DM/PM was significantly lower than that from normal controls(380.61?299.13ng/mL)(P0.05),and normal controls(231.64?83.92)(P
4.Methylation situation of let-7a-3 in chronic myeloid leukemia and its clinical significance
Dehong WU ; Dongming YAO ; Yun LI ; Jiang LIN ; Zhaoqun DENG ; Jing YANG ; Xingxing CHEN ; Zhen QIAN ; Jichun MA ; Jun QIAN
Chongqing Medicine 2015;(15):2020-2023
Objective To investigate the methylation situation of let‐7a‐3 promoter in patients with chronic myeloid leukemia (CML) and its clinical significance .Methods The methylation level of let‐7a‐3 promoter in the bone marrow mononuclear cells of 52 CML patients and 25 controls was detected by using the real‐time quantitative methylation‐specific PCR (RQ‐PCR) .Results The non-hypomethylation of let‐7a‐3 promoter was positive in 31 cases(59 .6% ) of 52 CML patients ,while only 1 case(4% ,1/25) in the control group ,the difference between the two groups were statistically significant (P< 0 .01) .The ROC curve analysis showed that the non -hypomethylation of let‐7a‐3 has better specificity for the auxiliary diagnosis of CML .The significantly posi‐tive correlation was found between the non -methylation level of let‐7a‐3 promoter and the BCR/ABL transcription level (r=0 .641 ,P=0 .001) .In contrast ,there was no obvious correlation between the non -methylation level of let‐7a‐3 promoter and the WBC count ,platelet count and hemoglobin levels(P>0 .05) .The non-hypomethylation level of let‐7a‐3 in chronic phase and accel‐erate phase was significantly higher than that in blastic crisis of CML .Conclusion The hypomethylation level of let‐7a‐3 promoter is decreased with disease progression .
5.Clinical comparative study on the treatment characteristics of secretory otitis media between cleft and non-cleft palate patients.
Sen LI ; Hong ZHANG ; Yun WEI ; Xilei ZHANG ; Yingru WU ; Jiang QIAN ; Liang SHEN ; Zhengjian ZHANG
West China Journal of Stomatology 2015;33(3):259-262
OBJECTIVETo discuss the treatment characteristics of secretory otitis media (SOM) in cleft palate children.
METHODSA total of 319 patients (524 ears) with SOM and cleft palate (3-14 years old) who accepted treatment were divided into experiment group A, group B, and group C according to effusion characteristics in the middle ear and tympanic pressure. Group A included 112 patients with serous effusion (198 ears). Group B included 162 patients with mucinous effusion (248 ears). Group C included 45 patients (78 ears) with negative pressure in the middle ear without effusion and an acoustic immittance. A total of 208 patients (246 ears) with SOM and tonsil and adenoid hypertrophy were divided into control group Al, group B1, and group Cl matched with the same effusion characteristics in the middle ear and tympanic pressure. Group A and Al accepted puncture in the tympanic cavity, group B and B1 accepted tympanostomy tubes, and group C and Cl accepted puncture in the tympanic cavity after palatoplasty, adenoidectomy, and tonsillectomy. All groups were treated with antibiotics and ear drops. Cure rate and recurrence rate between the experiment group and the control group were compared.
RESULTSThe control group had a better cure rate [93.09% (229/246)] than the experiment group [77.29% (405/524)] 12 months after treatment. The experiment group had a higher recurrence rate [14.57% (59/405)] than the control group [3.93% (9/229)]. Statistical differences were observed between the two groups (P<0.05). SOM with cleft palate initially had a low cure rate, and thus it was treated repeatedly for many times.
CONCLUSIONSOM with cleft palate is different from normal otitis media in terms of clinical manifestation, treatment, outcome, and prognosis. This case should be considered a special otitis media to be treated with special examination and therapy to obtain better results. Repeated puncture in the tympanic cavity and tympanostomy tubes for six months according to effusion characteristics are better treatment options for patients with SOM and cleft palate.
Child ; Cleft Palate ; Humans ; Middle Ear Ventilation ; Otitis Media with Effusion ; therapy ; Prognosis ; Recurrence
6.Protective effect of ligustilide against glutamate-induced apoptosis in PC12 cells.
Qian WU ; Ning WANG ; Yan WANG ; Guang-Yun WANG ; Xin-Xin PIAO
Acta Pharmaceutica Sinica 2015;50(2):162-168
To investigate the neuroprotective of ligustilide (LIG) against glutamate-induced apoptosis of PC12 cells, cell viability were examined by MTT assay. Flow cytometry was applied to assay cell apoptosis rate. Intracellular calcium concentration was measured by using fluorescent dye Fluo-3/AM. Cytochrome C (Cyt C), Caspase-3, Bax and Bcl-2 protein expression were assayed by western blot. The results showed that glutamate is cytotoxic with an inhibitory concentration 50 (ID50) of 15 mmol · L(-1). Pretreatment with LIG (1, 5, 15 μmol · L(-1)) significantly improved cell viability. The apoptosis rate in glutamate-induced PC12 cells was 13.39%, and decreased in the presence of LIG (1, 5, 15 μmol · L(-1)) by 9.06%, 6.48%, 3.82%, separately. Extracellular accumulation of Ca2+ induced by glutamate were significantly reduced by LIG. The results of western blot manifested that pretreatment LIG could decrease the release of Cyt C from mitochondria, down-regulate Caspase-3 protein expression and up-regulate Bcl-2/Bax ratio, thereby protects PC12 cells from apoptosis. In summary, LIG had protective effect on glutamate-induced apoptosis in PC12 cells through attenuating the increase in intracellular Ca2+ concentration, and inhibiting the release of Cyt C from mitochondria to cytoplasm.
4-Butyrolactone
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analogs & derivatives
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pharmacology
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Aniline Compounds
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Animals
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Apoptosis
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drug effects
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Apoptosis Regulatory Proteins
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Calcium
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metabolism
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Caspase 3
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metabolism
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Cell Survival
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Cytochromes c
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metabolism
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Glutamic Acid
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adverse effects
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Mitochondria
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metabolism
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PC12 Cells
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drug effects
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Proto-Oncogene Proteins c-bcl-2
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metabolism
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Rats
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Xanthenes
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bcl-2-Associated X Protein
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metabolism
7.The influences of hepatitis B virus precore and basic core promoter region mutations on the immune responses of specific cytotoxic T lymphocytes
Xiao-Juan YANG ; Guo-Rong WU ; Hao PEI ; Jin-Juan QIAN ; Rui-Yun JI ;
Chinese Journal of Infectious Diseases 2007;0(12):-
Objective To investigate the influences of mutation at precore and basic core promoter(BCP) region in hepatitis B virus(HBV) on the immune response of specific cytotoxic T lymphocytes(CTL) in patients with chronic hepatitis B(CHB).Methods The number of specific CTL in peripheral blood mononuclear(PBMC) of CHB patients were tested by cytokine flow cytome- try(CFC) and HBV core18-27 peptide.HBV precore and BCP fragments were directly sequenced. Results Twenty-one(38.9%) samples were HBV precore G1896A mutation.Twenty-six(48.1%) samples were BCP region 1762/1764 combined mutation.Thirteen(24.1%) stains were three sites mutated simultaneously.Stimulated with HBV core 18-27 in vitro,the specific CTL level was signifi- cantly higher in the patients with G1896A mutation and BCP region mutation [(0.41?0.09)%, (0.36?0.08)%,(0.48?0.08)%,respectively]than those without mutation[(0.11?0.06)%, P
8.Putative Phosphorylation Sites On WCA Domain of HA2 Is Essential For Helicoverpa armigera Single Nucleopolyhedrovirus Replication
Yipin LV ; Qian WANG ; Chunchen WU ; Yuan ZHOU ; Yun WANG ; Xinwen CHEN
Virologica Sinica 2011;26(4):245-251
Protein phosphorylation is one of the most common post-translational modification processes that play an essential role in regulating protein functionality.The Helicoverpa armigera single nucleopolyhedrovirus (HearNPv) orf2-encoded nucleocapsid protein HA2 participates in orchestration of virus-induced actin polymerization through its WCA domain,in which phosphorylation status are supposed to be critical in respect to actin polymerization.In the present study,two putative phosphorylation sites (232Thr and 250Ser) and a highly conserved Serine (245Ser) on the WCA domain of HA2 were mutated,and their phenotypes were characterized by reintroducing the mutated HA2 into the HearNPV genome.Viral infectivity assays demonstrated that only the recombinant HearNPV bearing HA2 mutation at 245Ser can produce infectious virions,both 232Tbr and 250Ser mutations were lethal to the virus.However,actin polymerization assay demonstrated that all the three viruses bearing HA2 mutations were still capable of initiating actin polymerization in the host nucleus,which indicated the putative phosphorylation sites on HA2 may contribute to HearNPV replication through another unidentified pathway.
9.Clinical effect of anterior vitrectomy for congenital cataract
Hua, HE ; Feng, ZHOU ; Qi, ZHU ; Qian, WANG ; Xue-Mei, WU ; Jian, MA ; Ya-Yun, WANG
International Eye Science 2015;(5):825-827
?AlM: To evaluate the clinical efficacy of posterior continuous curvilinear capsulorhexis ( PCCC ) combined with anterior vitrectomy in preventing posterior capsule opacification of congenital cataract surgery.
?METHODS:Postoperative clinical follow-up data of 82 cases ( 87 eyes ) with congenital cataract treated in Eye Center of our hospital from January 2011 to August 2014 were retrospectively analyzed. The patients were divided into the surgical control group ( 38 cases, 40 eyes, recieved phacoemulsification + PCCC ) and the study group ( 44 cases, 47 eyes, accepted phacoemulsification+ PCCC + anterior vitrectomy). The incidence of central optic axis opaque and postoperative visual acuity distribution were recorded at 1a follow - up. lntraoperative and postoperative complications were observed.
?RESULTS:The rate of central optic axis opaque grade 0 in control group was 37. 5%, compared to 76. 6% in study groups. The opacity distribution ratio of grade 1,2,3 and 4 in study group were lower than that of control group, and the central optic axis opacity distribution ratio in study group was significantly better than that of control group (P<0. 05). The 19 eyes(47. 5%) of visual acuity testing ≤0. 5 in control group , was higher than the 7 eyes(14. 89%) of that in the study group, The 21 eyes (52. 5%) of visual acuity testing >0. 5 in control group was lower than the 40 eyes ( 85. 11%) of that in study group. The visual acuity between two groups has statistical significance difference after 1a follow-up ( P<0. 05 ) , and the visual acuity in study group was significantly better than that in the control group. The postoperative intraocular pressure at 1mo and 1a follow-up was lower than before operation in two groups ( P<0. 05), but there was no significant difference between two groups in intraocular pressure (P<0. 05).
?CONCLUSlON: Combination of phacoemulsification, PCCC and anterior vitrectomy presents reliable clinical effects on postoperative central optic axis opacity distribution ratio and visual acuity, and it should be adopted to prevent the occurrence of posterior capsule opacification.
10.Urodynamic effects of electrical stimulation of the detrusor spastic bladder after spinal cord injury
Deting ZHU ; Yun ZHOU ; Xiaojun FENG ; Jun QIAN ; Juehua JING ; Jianxian WU
Chinese Journal of Physical Medicine and Rehabilitation 2017;39(3):197-201
Objective To observe the clinical effect of surface electrical stimulation on bladder spasm among patients with spinal cord injury,and compare it with that of therapy combining electrical stimulation with bladder function training.Methods Forty-two patients with bladder spasm after spinal cord injury were randomly divided into an experimental group (n=21) and a control group (n=21).Patients in the experimental group were further divided into three subgroups:patients with cervical spinal injury (n =7),thoracic spinal injury (n =9) and lumbar spinal injury (n =5).Both the experimental group and control group were given normal bladder function recovery exercise,while the experimental group was given the extra electrical stimulation on the surface of the sacral nerve.Urodynamic tests including the maximum detrusor pressure,bladder capacity,residual urine volume and bladder compliance were conducted for both groups before the treatment,after the first and the second 18-days of treatment and during a follow-up visit 2 months after the intervention.Results After the first course of treatment,significant differences were found in all measurements in the experimental group and most measurements of the control group except for the residual urine volume.Significant differences were found in all measurements after the second course of treatment compared to those after the first course in both groups.After the two courses of treatment and during the follow-up visit the average residual urine volume of the experiment group was significantly better than that of the control group.After the second course of treatment the average maximum detrusor pressure and bladder compliance of the experimental group were significantly better than those of the control group.Conclusion Surface electrical stimulation significantly improves the urodynamics and bladder function of patients with bladder spasm after spinal cord injury and its therapeutic effect is greater for patients with cervical and thoracic spinal injury than for those with lumber spinal injury.