1.The clinicopathologic analysis in autopsy patients with cardiovascular disease
Jing WANG ; Meilin XU ; Hongliang CONG
Chinese Journal of Internal Medicine 2011;50(7):589-592
Objective To investigate the clinical autopsy results of patients died of cardiovascular disease or other disease complicated with cardiac damage. Methods Complete autopsy was performed on 86 cases with uncertain cause of death. Through integrating clinical diagnosis and treatment with gross autopsy findings and microscopic observations, 86 autopsies were determined the major cause of death. Results In 86 autopsies, 69 cases were heart disease. Differences between pathological diagnosis and clinical diagnosis were compared. Twenty-seven cases were cardiac deaths, with diagnosis accrodance rate of 81. 5%. Fortytwo cases died of non-cardiac disease but complicated with heart disease or involving the heart which accelerated the death in patients, with accordance rate of 78.6%. Conclusion Scientific and correct performance of autopsy was important to determine the causes of death, to promote development of related disciplines and to improve the diagnosis and treatment of the diseases.
2.Cosmetic dermatosis: clinical analysis of 989 cases
Gang XU ; Kaimei YU ; Meilin LIU
Chinese Journal of Medical Aesthetics and Cosmetology 2002;0(02):-
Objective To study the characteristics of cosmetic dermatosis and to determine the allergens for cosmetic dermatosis. Methods Unwanted effects of cosmetics in the 989 patients were observed and the patch test was performed in all patients with Bianmin standard screening patch test kit. Results Of them 698 (70.58 %) were contact dermatitis, 109 (11.02 %) were hyperpigmentation, and 79 (7.99 %) were acne like lesions. One hundred and eighty-nine kinds of cosmetics were suspected to be responsible for the dermatosis. 653 out of 989 patients tested were positive (66.03%). Conclusions Cosmetic dermatosis such as contact dermatitis and hyperpigmentation can be prevented and cured by guidance of patch test. The patch test should be performed in patients with cosmetic dermatosis.
3.Multiple myeloma after chemotherapy secondary to acute myeloid leukemia:a case report and literature review
Meilin CAO ; Yanli XU ; Lei ZHANG
Practical Oncology Journal 2015;(6):536-539
Second primary malignancies are more likely to occur in the multiple myeloma patients .Most of them are Acute myeloid leukemia ( AML) or Myelodysplastic syndrome ( MDS) .The incidence in male or those multiple myeloma patients who is less than 60 years old are more than female or those multiple myeloma patients who are bigger than 60 years old.In recent years,studies of multiple myeloma secondary to leukemia and other tumors are gradually increasing ,but the mechanism and treatment are still unclear .These diseases have the follow-ing characteristics such as progress rapidly ,high mortality rate and low complete remission rate after chemothera-py.
4.Antioxidation and Immuno-regulation Effects of Jiawei Zhisou Powder on Hypersensitive Asthma Mice
Naiyu XU ; Zhenlun GU ; Meilin XIE
Traditional Chinese Drug Research & Clinical Pharmacology 1993;0(01):-
Objective To study the antioxidation and immuno-regulation effects of the active fraction in Jiawei Zhisou Powder.Methods Hypersensitive asthma mice were established by the miscible liquids of ovalbumin(OA)and Al(OH)3.The influences of the powder on the contents of SOD and MDA in the serum and lung tissue of mice were observed and the contents of IL-4 and IFN-?in supernatant of mouse spleen cells cultured in vitro were measured by enzyme-linked immunosorbent assay.And Jiawei Zhisou Powder and dexamethasone were administered to normal mice respectively,then the immune organs weight were measured and the spleen and thymus indexes of mice were calculated.Results Compared with the normal group,the contents of SOD and IFN-?were significantly decreased,while MDA and IL-4 contents were obviously enhanced in asthma group(P
5.A prospective study of nosocomial infection in patients with systemic lupus erythematosus
Gang XU ; Meilin LIU ; Kaimei YU ;
Chinese Journal of Rheumatology 2001;0(04):-
Objective To study the nosocomial infection in the patients with systemic lupus erythematosus (SLE). Methods A prospective survey of nosocomial infection in 456 cases with SLE was carried out for 84 months.Result Incidence of nosocomial infection in patients with SLE was 36 4%,infection of respiratory tract accounted for 45 2%,infection rates in urinary tract,skin and other regions were 16 0%,12 6% and 26 2% respectively.Gram negative bacilli were the predominant pathogens and the pathogens had higher frequency of multiple antibiotic resistance. Conclusion The factors related to nosocomial infection were the use of broadspectrum antibiotics,prednisone and administration of immunosuppressant,etc.
6.Expression Level of Sphingosine Kinase 1 and Nuclear Factor-κB p65 in Non-Small Cell Lung Cancer and Their Relationship with Tumor Prognosis
Chang CHANG ; Meilin XU ; Jing WANG
Tianjin Medical Journal 2014;(4):305-308
Objective To investigate expression level of sphingosine kinase 1 (SPHK1) and nuclear factor-κB (NF-κB) in non-small cell lung cancer (NSCLC) and their relationships with invasion, metastasis and prognosis of NSCLC. Meth-ods Ninety-three NSCLC specimens and paraneoplastic normal lung tissue from conventional surgery were confirmed by histology. Expression of SPHK1 and NF-κB were detected by Immunohistochemistry on paraffin sections. Primary antibody were Rabbit Anti-Human SPHK1 and Rabbit Anti-Human NF-κB p65, which were incubated 1 hour in water bath. The secondary antibody was HRP-Polymer anti Mouse IgG, which was incubated 20 minutes in water bath. Results SPHK1 ex-pression was positive in 96.8% (90/93) of NSCLC specimen which is higher than in paraneoplastic normal lung tissue in which the positive rate is 18.3%(17/93);NF-κB expression was positive in 89.2%(83/93) NSCLC which is higher than the in paraneoplastic normal lung tissue in which the positive rate is 12.9%(12/93). The expression of SPHK1 and NF-κB in NSCLC was positively correlated (r=0.464, P<0.01). TThe expression levels of SPHK1 and NF-κB p65 in NSCLC patients with were positively related to TNM staging and lymph node metastasis. SPHK1 expression and NF-κB p65 expression lev-el were higher in the deads than in survivals. There was no statistical significance in different expression intensity of SPHK 1 and NF-κB p65 in patients with NSCLC who had differences in gender, age, tumor size, tumor location, histological type. Survival analysis showed that survival time of patients of NSCLC with high expression of SPHK1 was shorter than those in the group with low SPHK1 expression, and the difference was statistically significant (χ2=14.025, P < 0.01). Conclusion In the process of NSCLC invasion and metastasis,SPHK1 may play an important role through NF-κB, and it can predict prognosis of NSCLC patient. Moreover, it will become a potential target for NSCLC target.
7.The Expression and Clinical Significance of RhoB and E-Cadherin in Non-Small-Cell Lung Cancer Tissues
Yimei TAN ; Xun ZHANG ; Meilin XU ; Jing WANG ; Yijun XU
Tianjin Medical Journal 2014;(1):27-30
Objective To investigate the expressions of RhoB and E-cadherin in non-small-cell lung cancer (NSCLC), and their clinical significances thereof. Methods Immunohistochemical staining was applied to detect expres-sions of RhoB and E-cadherin in 116 samples of NSCLC (NSCLC group) and 116 samples of normal lung tissues (control group). Correlations of expressions of RhoB and E-cadherin to clinical pathological parameters and prognosis were analyzed in two groups. Results The expression intensities of RhoB and E-cadherin were significantly lower in NSCLC group than those in control group (57.76%vs 87.07%,54.31%vs 85.34%,P<0.01). There were significant differences in the expres-sion of RhoB between different pathological types, differentiation and lymph node metastasis in NSCLC group. There were significant differences in the expression of E-cadherin between different TNM stages, differentiation and lymph node metas-tasis in NSCLC group. The expression of RhoB was positively correlated with the expression of E-cadherin ( r=0.503,P<0.01). The 3-year survival rates were significantly higher in patients with high expression of RhoB (83.93%) than those in pa-tients with low expression of RhoB (40.00%, Log-rank χ2=18.992,P<0.01). The 3-year survival rates were significantly higher in patients with high expression of E-cadherin (85.11%) than those in patients with low expression of E-cadherin (44.93%, Log-rankχ2=16.680,P<0.01). Further multivariate analysis suggested that both lower expressions of RhoB and E-cadherin and lymph node metastasis were prognostic indicators for NSCLC (P<0.001). Conclusion The expressions of RhoB and E-cadherin showed a good correlation in NSCLC. Detecting the expression of RhoB combined with E-cadherin may give a clue on clinicopathological features and prognosis in patients with NSCLC.
8. Clinical Significance of Positive TB-IGRA in Patients With Crohn's Disease and Intestinal Tuberculosis
Chinese Journal of Gastroenterology 2019;24(2):76-80
Background: Crohn's disease (CD) and intestinal tuberculosis (ITB) share similarities in disease manifestations, but their treatment methods are totally different. Thus, the differential diagnosis between CD and ITB is of great clinical importance. Aims: To investigate the significance of positive tuberculosis interferon-gamma release assay (TB-IGRA) in differential diagnosis and treatment of CD and ITB. Methods: Fifty-six consecutive patients with positive TB-IGRA and definite diagnosis of CD (n=23) or ITB (n=33) in the Tenth People's Hospital of Tongji University from Jan. 2015 to May 2018 were enrolled. All these patients have been proposed as CD at their first visit. The effects of TB-IGRA on diagnosis and treatment were analyzed. Results: ROC curve analysis demonstrated that the cut-off value, sensitivity and specificity of TB-IGRA for diagnosis of tuberculosis infection were 100 pg/mL, 88% and 74%, respectively. In patients with TB-IGRA≥100 pg/mL, 4 were CD and 29 were ITB, while in patients with TB-IGRA<100 pg/mL, 19 were CD and 4 were ITB (P<0.05); 75.0% (3/4) of the CD patients with TB-IGRA≥100 pg/mL and 5.3% (1/19) of the CD patients with TB-IGRA<100 pg/mL had a history of tuberculosis infection (P<0.05). Thirty-five patients received diagnostic anti-tuberculosis therapy, the efficacy of those with TB-IGRA≥100 pg/mL was significantly higher than those with TB-IGRA<100 pg/mL (96.2% vs. 22.2%, P<0.05). Conclusions: 100 pg/mL might be set as the cut-off value of TB-IGRA for differential diagnosis between CD and ITB. Diagnostic anti-tuberculosis therapy is preferred for patients with TB-IGRA≥100 pg/mL, while patients with TB-IGRA<100 pg/mL need comprehensive analysis. For patients with history of tuberculosis infection, false positive TB-IGRA is prone to occur.
9.Mechanisms of ERK1/2 signaling pathway participate in inflammatory reaction caused by coronary heart disease
Jing WANG ; Meilin XU ; Chang CHANG ; Hongliang CONG
Tianjin Medical Journal 2016;44(8):938-942
Objective To investigate the effects of ERK1/2 signaling pathway on coronary atherosclerosis-associated inflammatory reaction in autopsy cases. Methods Forty-five autopsy cases were divided into three groups:coronary arterydisease (CHD)-associated death group, CHD group and control group (n=15 for each group). The inflammatory cell infiltration in myocardial tissues was observed through staining leucocyte common antigen (CD45) by HE and immunohistochemistry method. The protein expression level and distribution in extracellular signal-regulated kinase 1/2 (t-ERK1/2) and phosphorylated extracellular signal-regulated kinase 1/2 (p-ERK1/2) of myocardial tissues were detected by immunohistochemistry and Western-blot assay. The expression level of tumor necrosis factor α (TNF-α) was determined using semiquantitative RT-PCR analysis. The activity of nuclear factor (NF)-κB was assessed using electrophoretic mobility shift assay (EMSA). Results Compared with CHD and control groups, myocardial inflammatory cell counts, phosphorylation of ERK1/2, TNF-α mRNA expression and NF-κB activation were significantly increased in CHD-associated death group (P < 0.05). Western blot analysis showed that the phosphorylation of ERK1/2 was positively correlated with expression of TNF-αmRNA and the number of inflammatory cells in CHD-associated death group (r=0.675, P<0.01;r=0.893, P<0.01). Conclusion Results reveal that the activation of ERK1/2 signaling pathway is considered as an important mechanism for coronary atherosclerosis caused myocardial inflammatory reaction, which indicates that the inhibition of ERK1/2 signal transduction pathway may become a potential new target for prevention and treatment of atherosclerotic coronary infarction.
10.The pathological changes of visceral pleura in patients with chronic obstructive pulmonary disease
Zhen YE ; Jing WANG ; Yuechuan LI ; Meilin XU ; Yongxiang ZHANG
Tianjin Medical Journal 2017;45(1):83-86
Objective To observe the pathological change of visceral pleura in patients with chronic obstructive pulmonary disease (COPD), and to discuss the relationship between the changes and COPD airflow limitation. Methods A total of 70 patients received the pulmonary lobectomy or partial resection because of lung tumor in Tianjin Chest Hospital from May 2014 to August 2015 were selected in this study. According to the results of pulmonary function test, the patients were divided into COPD group [forced expiratory volume in one second (FEV1)/ forced vital capacity (FVC) <70%,n=40] and control group (FEV1/FVC≥70%,n=30). The lung tissues, which was not the lesion areas, were used to make tissue sections. The Elastica Van Gieson (EVG) method was used to stain the sections. The thickness of visceral pleural and the proportion of elastic fibers in visceral pleural were observed and calculated under a microscope in the two groups. Results The specimens were derived from upper and middle lobes in 22 cases of COPD group, and from lower lobe in 18 cases. Specimens were derived from upper and middle lobes in 17 cases of control group, and from lower lobe in 13 cases. There were no statistical differences in sampling sites between two groups (χ2=0.019,P>0.05). The visceral pleural thickness and the proportion of elastic fibers in visceral pleural were significantly thinner in COPD group than those of control group ( P<0.01). In both COPD group and control group, visceral pleural thickness was significantly thinner in upper and middle lobes than that of lower lobe (P<0.05), but the proportion of elastic fibers in visceral pleural of upper, middle lobes showed no statistical difference compared with that of the lower lobe (P>0.05). Conclusion The thinner visceral pleural and the reduction of elastic fibers in visceral pleural are one of the causes of expiratory airflow limitation in COPD patients.