1.Association between HLA-B51 alleles and Behcet's disease in Chinese Han nationality
Xiaojian LI ; Minghua CHEN ; Zhizhong ZHENG
Chinese Journal of Dermatology 2009;42(1):22-24
Objective To investigate the possible association between HLA-B51 alleles and Behcet's disease (BD). Methods Totally, 61 Chinese patients of Han nationality, who were diagnosed with BD according to the International Study Group (ISG) criteria, were recruited. The control cohort consisted of 100 healthy individuals. Blood samples were obtained from all the subjects. PCR-sequenee specific primers (SSPs) were used to for the genotyping of HLA-B51 alleles (HLA-B5101-HLA-B5109). Results Com- pared with the control group (11 positive, 11% ), the frequency of HLA-B51 (18 positive, 29.5% ) was sig- nificantly increased in BD patients (χ2=8.79, P<0.01, RR=3.39). The HLA-B51-positive patients and controls consistently carried HLA-B5101 allele with no other alleles observed. There were 15 males and 3 females in HLA-B51 positive patients, 22 males and 21 females in HLA-B51-negative patients, and signifi- cant differences in gender distribution was observed between HLA-B51-positive and negative patients (P<0.05 ). Moreover, the average age of onset in HLA-B51-positive patients significantly differed from that in HLA-B51-negative patients (28.4±10 years vs 37.3±12 years, P<0.05). However, no significant differ- ences were noticed in the clinical types, course, skin lesions, prevalence of genital ulcer, eye damage, joint involvement, or pathergy reaction between HLA-B51-positive and -negative patients (P0.05). Conclu- sions This study supports that HLA-B5101 allele is associated not only with the development of BD, but also with the gender and onset age of patients with BD of Chinese Han nationality.
2.Significance of coronary collaterals in patients with acute coronary syndrome
Yan LIU ; Shaoliang CHEN ; Zhizhong LIU
Chinese Journal of Clinical Pharmacology and Therapeutics 2002;0(06):-
AIM: To study the relation between development of coronary collaterals and clinical outcome in patients with acute coronary syndrome(ACS).METHODS:251 patients with clinical diagnosed ACS were consecutively enrolled into the present study and divided into two groups according to the presence of coronary collaterals by quantitative coronary angiography(QCA).Serial venous blood samples were collected at admission for determining of high-sensitive C-reactive protein(hs-CRP),brain natriuretic peptide(BNP),and cardiac troponin I(cTnI).Baseline left ventricular ejection fraction(LVEF)was determined by cardiac echo.RESTULTS: Coronary collaterals were detected in 38 patients(as CC group),another 213 patients without coronary collaterals were served as control group.Serum levels of cTnI in patients in CC group was significantly higher than in control group((0.91)?(1.13) vs(0.29)?(0.23)(ng?ml~(-1)),P(0.05)).Serum levels of cTnI in patiemets of CC group was significantly lower than those of control group((0.29)?(0.23) vs(0.91)?(1.13)(ng?ml~(-1)),P
3.An autoradiographic study of cell proliferatoin in penetrating wounds of sclera in rabbits
Changguan WANG ; Chen SONG ; Zhizhong MA
Medical Journal of Chinese People's Liberation Army 1983;0(02):-
Objective To study the healing process of penetrating injury of sclera. Methods A rabbit model with penetrating injury of sclera was made by incising the sclera accompanied by intravitreous injection of autologous blood. The animals were sacrificed at different time intervals after injury. Two hours before the animals were sacrificed, 3 H thymidine ( 3 H-TdR ) was injected into the vitreous cavity. The enucleated eye balls were fixed, dehydrated, embedded with paraffin, and sectioned for light microscopic examination and autoradiographic study. The numbers of cells that incorporated 3 H-TdR at different time intervals were compared. Results After the sclera was injured, inflammation occurred mainly in the superficial part of the sclera, from which most of the proliferating cells filling the wounds came. These cells grew along the vitreous strands to the blood clot in the vitreous cavity. Tractional retinal detachments were induced in 9 of the 12 rabbits within 2 weeks after injury. Cells of different ocular tissues incorporated 3 H-TdR, of which the cells from superficial sclera accounted for the majority. Incorporation of 3H-TdR by these fibroblasts peaked on the 5th day after injury(P
4.Interactions of human T cell immunoglobin mucins with apoptotic cells.
Zhizhong, CHEN ; Jilin, QING ; Lihua, HU
Journal of Huazhong University of Science and Technology (Medical Sciences) 2012;32(1):9-16
T cell immunoglobulin mucin (TIM) family plays a key role in regulating immune responses. In this study, the interactions of human TIM family with apoptotic cells were evaluated in order to provide a foundation for further study on the roles of human TIM genes in apoptosis. Nine kinds of pEGFP-N1 eukaryotic expression vectors containing different lengths of the three members of human TIM genes for the expression of TIM-EGFP and the vectors for the expression of TIM-Fc fusion proteins were constructed. It was found that human TIM proteins could recognize and bind to apoptotic cells directly, but not to viable cells. The interactions of sTIM-1-EGFP, sTIM-3-EGFP and sTIM-4-EGFP with apoptotic cells were blocked by TIM-1-Ig, TIM-3-Ig and TIM-4-Ig fusion proteins respectively. In addition, human TIM proteins mediated the recognition of apoptotic cells and bound to apoptotic cells directly via the IgV domains. In conclusion, the TIM family may play a key role in the regulation of apoptosis. Our data also suggest that human TIM proteins probably serve as novel proteins for the detection of the early cellular apoptosis.
5.Expression and clinical significance of p63 in nodular lymphocyte predominance Hodgkin lymphoma and classical Hodgkin lymphoma
Xin CHEN ; Xingan YE ; Zhizhong CHEN ; Chen WANG ; Liyu CAO
Chinese Journal of Clinical and Experimental Pathology 2015;(1):52-54
Purpose To investigate the expression and clinical significance of p63 in nodular lymphocyte predominant Hodgkin lym-phoma (NLPHL) and classical Hodgkin lymphoma (CHL). Methods 15 cases of NLPHL and 54 cases of CHL were stained for CD45, CD30, p63, PAX5, CD20, CD15, Oct-2, BOB1, MUM1, EMA, EBV-LMP1 and Ki-67 by immunohistochemical methods of EliVision. EBER were detected by in situ hybridization method in 12 cases of CHL. Results The expression of p63 in NLPHL (53. 3%, 8/15) was significantly higher than that in CHL (0, 0/54) (P<0. 05). Conclusions p63 protein is frequently expressed in NLPHL and helpful in the differential diagnosis between NLPHL and CHL.
6.Association of CYP2D6 gene polymorphism and therapeutic efficacy of venlafaxine on depression in southern region of Fujian
Jiaxin ZHANG ; Zhizhong XU ; Binbin CHEN ; Weige WU ; Jindong CHEN
Chinese Journal of Behavioral Medicine and Brain Science 2014;23(8):687-690
Objective To explore the effect of CYP2D6 gene polymorphism on blood concentration,therapeutic efficacy and adverse effects of anti-depression drug venlafaxine.Methods 69 cases of patients with depression were selected randomly from southern region of FuJian,China.The blood concentration of venlafaxine was detected by HPLC,and the CYP2D6 genotype was determined by sequencing with the amplified PCR products from peripheral blood DNA.The therapeutic efficacy and adverse effects of venlafaxine were evaluated by Hamilton depression scale(HAMD) and treatment emergent symptom scale(TESS) respectively.Results Subjects was divided into CC,CT,TT three groups based on rs16947 locus genotyping.The blood concentrations of venlafaxine were (157.35±15.63) ng/ml,(70.17±5.11) ng/ml,(115.72± 10.2) ng/ml respectively and there was no significant difference (F=1.257,P=0.301).The dose-corrected concentrations and normalized concentrations were not significantly different (F=1.683,1.547,P> 0.05).Similarly,the reduction rate of HAMD (CC:(40.6 ± 7.23) %,CT:(51.7±7.09)%,TT:(42.8±14.1)%) and TESS scores (CC:1.3±0.21,CT:1.3±0.36,TT:1.2±0.28) were not significantly different either (P>0.05).In 69 samples in this study,genotyping of rs3892097 locus only found GG type,and no further examination was performed.Genotyping divided rs1065852 locus into CC,CT,TT three groups.The blood concentrations of venlafaxine were (42.87±9.9) ng/ml,(64.25 ± 13.59) ng/ml,(181.56± 14.15) ng/ml respectively,and there was significant difference among the three groups (F=4.893,P=0.016).The dose-corrected concentrations and normalized concentrations were also significantly different (F=3.985,3.648,P<0.05).The reduction rate of HAMD (CC:(42.6±8.23) %,CT:(48.8± 10.8) %,TT:(63.4±9.15) %) was not significantly different (F=2.961,P=0.07).The difference of TESS scores was similar to that of HAMD reduction rate.Conclusion Among the 3 loci studied,only rs1065852 locus within CYP2D6 gene can affect its enzyme activity and then influence the therapeutic efficacy and adverse effects of venlafaxine.
7.Relationship between anti-ovary antibodies and serum levels of hormone profile and menstrual disturbances in patients with systemic lupus erythematosus
Zhijun CAO ; Zhizhong YE ; Huijuan DONG ; Jie CHEN ; Zhihua YI
Journal of Chinese Physician 2012;14(3):301-303,307
Objective To verify the presence of anti-ovary antibodies in systemic lupus erythematosus (SLE) and its possible correlations with serum levels of hormone profile and menstrual disturbances in patients with SLE.Methods Clinical data of 78 consecutive paticnts who fulfilled 4 or more of the ACR 1997 revised criteria for SLE were studied and compared with 40 age-matched healthy controls,including anti-ovary antibodies.Results 27 (34.6% ) patients with SLE,and 1 (2.5%) of the healthy controls tested positive of anti-ovary antibodies.The levels of E2 and T and P decreased[ E2:( 80.96 ± 36.2 ) ng/L vs ( 118.53 ± 42.4 ) ng/L; T:( 3.85 ± 1.18 ) nmol/L vs ( 6.43 ± 2.28 ) nmol/L; P:( 1.37 ± 0.59 ) μg/L vs ( 3.92 ± 1.23 ) μg/L],and the levels of FSH and LH and PRL increased in SLE patients when compared with healthy controls [ FSH:( 19.17 ± 9.26)IU/L vs (10.18 ±7.27 )IU/L; LH:( 21.19 ± 12.44)IU/L vs (13.79 ±8.27)IU/L;PRL:(6.18 ± 2.27 ) μg/L vs (2.37 ±0.63)μg/L,P <0.05 orP <0.01].The higher SLEDAI score,higher rate of menstrual disturbances (6.3 ±2.8 vs 3.5 ± 1.7,81% vs 47%,P <0.05 or P < 0.01 ) and decreased serum level of E2 [ (64.13 ± 26.36 ) ng/L vs ( 82.83 ± 28.71 ) ng/L,P < 0.05 ]were found in SLE patients with anti-ovary antibodies positive than in SLE patients with anti-ovary antibodies negative.Conclusions The presence of anti-ovary antibodies was 34.6% in SLE,and may correlate to decreased serum level of E2 and menstrual disturbance.
8.Granulocyte-colony stimulating factor for repair of injured arteries in rats
Jun WU ; Shaoliang CHEN ; Zhizhong LIU ; Xiaobo LI ; Xiaoye SU
Chinese Journal of Tissue Engineering Research 2007;11(23):4630-4633
BACKGROUND:It has been reported that treatment with granulocyte-colony stimulating factor (G-CSF) increases the abundance of circulating CD34+ cells in rats. Data from the study, more important, suggested that mobilized by G-CSF may enhance rapid reendothelization and reduce neointimal formation after vascular injury.OBJECTIVE: To evaluate whether BM-derived CD34+ cells could enhance rapid reendothelization and reduce neointimal formation after balloon-injured carotid artery in an intact rat model.DESIGN: Randomized control animal study.SETTING: Nanjing First Hospital Affiliated to Nanjing Medical University.MATERIALS: The experiment was carried out in Nanjing First Hospital from December 2005 to April 2006. A total of 40 male Sprague-Dawley rats, weighing 200-250 g and of SPF grade, were purchased from National Rodent Laboratory Animal Resources, Shanghai Branch. The recombinant human G-CSF was purchased from Qilu Pharmaceutical. The 2F Fogarty arterial embolectomy catheters were purchased from Edwards Lifesciences. Anti-human CD34 and anti-human CD45 were purchased from Multi Sciences.METHODS: SD rats were divided randomly into treated group (n =20) and control group (n =20). Subcutaneous injection of recombinant human G-CSF (100 μg/kg/day) once daily for 8 days for treated group. Control group as treated with subcutaneous injection of saline. Five days after initiation of G-CSF treatment or saline, the rats were anesthetized by intraperitoneal injection with ketamine. The left common carotid artery was exposed through a midline incision of the ventral side of the neck. A 2F Fogarty arterial embolectomy catheter was inserted through the external carotid artery,inflated with 200 μL air, and passed 3 times along the length of the segment, which was defined proximally by the carotid bifurcation and distally by the edge of the omohyoid muscle. After removal of the catheter, the proximal ligature of the external carotid artery was tied off. ① An average of 1 mL venous blood per rat was collected for enumeration of the white blood wells (WBCs) and CD34+ cells before and 5 days after initiating G-CSF or saline treatment. ② Ten rats in each group were killed with overdose ketamine at 14 and 28 days after balloon injury and left common carotid arteries were harvested. The luminal surface of carotid arteries (n =5, each group) was exposed to calculate the reendothelialized area, which was manually traced with software (Image ProPlus). Reendothelialized area = non-stained with Evans blue area/the total area of balloon-injuried. The cross sections of carotid arteries (n =5, each group) were stained with hematoxylin and eosin (HE) and calculated intima-to-media area ratio (I/M) with software (Image ProPlus) to assess the extent of neointimal thickening. ③ To evaluate the extent of reendothelialization of arteries injury, sections were stained with CD31 and vWF by immunohistochemistry analysis.MAIN OUTCOME MEASURES: ① The number of WBCs and CD34+ cells; ② the extent of reendothelialization of arteries injury; ③ the extent of neointimal hyperplasia (I/M); ④ CD31 + and vWF+ endothelial cells.RESULTS: A total of 40 rats were involved in the final analysis. ① The number of WBCs and CD34+ cells: After 5 days of treatment, the number of WBCs in the treated rats increased more than 2.7-fold compared with control group [(27.60±2.45) ×109 L-1, (10.11±1.81) ×109 L-1, P < 0.01], CD34+ cells increased more than 12.2-fold compared with control group (38.31×107 L-1, 3.14×107 L-1, P < 0.01). ② The extent of reendothelialization: At 14 and 28 days after balloon injury,carotid artery of reendothelialization in the treated group were (68.3±8.3)% and (97.6±4.1)%, superior than the control group (33.8±6.3)% and (76.1±5.2)% (P < 0.01). ③ The extent of neointimal hyperplasia: At 14 and 28 days after balloon injury, the neointima-media (I/M) ratios in the treated rats were 0.39±0.11 and 0.45±0.09, less than the control group 0.87±0.15,1.26±0.16 (P < 0.01). A highly significant inhibition of neointimal hyperplasia was observed in the treated group. ④ CD31+ and vWF+ endothelial cells: At 28 days after injury, sections from G-CSF treated group showed almost complete and continuous monolayer of CD31 and vWF positive cells.In contrast, a patchy and interrupted CD31 and vWF positive cells were found lining the lumen of control group.CONCLUSION:Treatment with G-CSF significantly increases the number of CD34+ cells and accelerates the rate of reendothelialization of injured vessels, leading to marked inhibition of neointimal formation after vascular injury in rats.
9.Research progress on extraintestinal cutaneous manifestation of Crohn's disease
Jiwen ZHOU ; Zhizhong XU ; Guidong SUN ; Hongjin CHEN ; Bolin YANG
Chinese Journal of Digestive Surgery 2016;15(12):1220-1225
Crohn's disease (CD) is a chronic nonspecific inflammatory disease.CD can affect any location in the digestive tract,and it also affect other organs,including the eyes,skin,liver and joints,which are termed extraintestinal manifestations (EIMs).The cutaneous manifestations of CD are common and occur in about one-third of patients.EIMs of CD have been divided into 3 categories.(1) Specific lesion,cutaneous manifestations of CD were the same as histopathologic findings of underlying gastrointestinal lesion.(2) Reactive lesion,it was also inflammatory lesion which was usually accompanied by underlying gastrointestinal disease while inflammatory injury was different from histopathologic findings of gastrointestinal lesion.(3) Associated lesion,it was caused by sequelae of human leucocyte antigen and chronic inflammation.In the current era of ever-expanding therapeutic options for CD,some investigators have proposed a fourth category of EIMs,namely those that are therapy-related lesion.The therapy-related lesion is closely related to disease-associated conditions in light of certain skin findings,and there is potential overlap between them.
10.Effects of PDCA Cycle Quality Management Model on Multi-drug Resistant Organism Infection Control in Reha-bilitation Hospital
Chen LI ; Zhizhong LIU ; Jiaxing XIE ; Haiqing ZHANG ; Zhizhen BAI
Chinese Journal of Rehabilitation Theory and Practice 2016;22(12):1476-1479
Objective To analyze the effect of PDCA cycle quality management model on multi-drug resistant organism (MDROs) infec-tion control in a tertiary rehabilitation hospital. Methods From March, 2013 to December, 2015, targeted surveillance of MDROs infection control was performed with PDCA cycle quality control. The MDROs detection rate, the awareness rate of MDROs prevention and control, the rate of doctor issuing isolation orders and execution rate of medical sanitation disinfection and isolation were analyzed. Results The de-tection rates of methicillin-resistant staphylococcus aureus and Carbapenem-resistant Pseudomonas aeruginosa decreased (χ2>3.922, P<0.05), while no significant difference was found in the detection rate of multidrug-resistance Acinetobacter baumanii (χ2=8.775, P=0.071). The awareness rate of MDROs prevention and control, the rate of doctor issuing isolation orders and execution rate of medical sanitation dis-infection and isolation significantly improved (χ2>399.17, P<0.001). Conclusion PDCA cycle quality management model played an impor-tant role in the prevention and control of MDROs in rehabilitation hospital.