1.Anti-bacterial Effects of Baicalin on One Escherichia coli Strain Carrying NDM-1 Gene
Zhiyuan LIU ; Jian PAN ; Jie QI ; Tingju ZHANG ; Yuzhi MA
Journal of Modern Laboratory Medicine 2016;31(3):124-126
Objective To examine the bacteriostasis of baicalin against Escherichiacoli strain carrying NDM-1 gene.Methods Minimal inhibitory concentration(MIC)and minimal bactericidal concentration(MBC)were determined by broth dilution method.Synergy function was designed withcheckerboard method.Anti-infection effect in vivo of baicalin was observed in mice with bacteremia.Results In vitro antibacterial tests showed that the MIC and MBC baicalin were 8 mg/ml.Synergistic inhibitory effect was observed between baicalin and imipenem (FIC=0.125).In vivo inhibition experiments showed that ba-icalin had decreased the mortality of 25% of Escherichiacoli Strain carrying NDM-1 gene infection in mice.Conclusion Ba-icalin has antibacterial effect on NDM-1 E.coli.
2.Imaging features and surgical treatment of chromophobe renal cell carcinoma
Jun TIAN ; Jianhui MA ; Changling LI ; Jingrui DAI ; Yuzhi HAO
Chinese Journal of Urology 2008;29(4):229-231
Objectiye To improve the diagnosis and treatment of chromophobe renal cell carcinoma(CRCC). Methods The clinical dota of 25 patients of CRCC were reviewed.Thirteen were xmales and 12 were females and thirteen on the left and twelve on the right.The mean age was 51 years.Sixteen(64%)patients were asymptomatic.Gross hematuria,low back pain and discomfort and fever occurred in the other 9 patients.Laboratory investigations showed 1 patient had raised alanine aminotransferase and 1 had high erythrocyte sedimentation rate. Results B-ultrasound was mainly characterized by low echo renal mass with intact capsule and low blood flow signals.CT and MR of CRCC were typically well circumscribed,homogeneous(unenhanced CT was 70%,MR was 73%)with no necrosis and hemorrhage,homogenous enhancement(CT was 65%,MR was 67%)and mild enhanced(CT was 65%,MR was 67 %)renal mass.Twenty-two patients with tumors>4.0 cm had radical nephrectomy and three with tumors≤4.0 cm had partial nephrectomy.The average diameter of tumors was 7.6 cm.The cross-sections of the tumors were grossly homogeneous,pale or dark brown solid.Light microscopy showed that the tumors were composed of trabeculae or sheets with voluminous cells in pale or eosinophilic cytoplasm.Immunohistochemical assay was positive of CK8 and negative of Vimentin.The pathologic TNM stages were 8 with T1a,9 with T1b,6 with T2 and 2 with T3a.Twenty-three patients were followed up.After mean follow-up of 28 months,22 cases were tumor free.One patient had pulmonary metastasis 58 months after operation and had no reaction to interferon-α and chemotherapy and died. Conclusions The majority of CRCC patients are asymptomatic and usually with low-stages.There are some features in CT and MR appearance of CRCC such as well circumscribed and homogenous.Surgical treatment should follow the treatment principles of renal cell carcinoma and carries an excellent prognosis for most localized tumors but there has been no effective measures to treat metastasis disease.The interval between operation and metastasis is relatively long and the time of follow-up should be prolonged in CRCC.
3.Isolation and Identification of L·adecarboxylata Producing IMP-1 Metallo-beta-lactamase
Jie QI ; Guijian LIU ; Jian PAN ; Yuzhi MA ; Tingju ZHANG ; Zhiyuan LIU
Journal of Modern Laboratory Medicine 2015;(2):52-54,57
Objective To investigate the phenotype and genotype in a carbapenem resistant L.adecarboxylata strain.Methods Microbial identification and drug susceptibility test was done with VITEK II Compact.Carbapenemases genes were detec-ted by PCR methods.Results The strain of carbapenem resistant L.adecarboxylata produced IMP-1 carbapenemase.Con-clusion L.adecarboxylata was found only rarely in the clinical isolates.This was the first Isolate of L.adecarboxylata pro-ducing IMP-1 metallo-beta-lactamase.
4.Distribution of apocrine sweat glands in axillary region of patients with axillary osmidrosis
Weibin XING ; Wenfang LIU ; Zishen ZHAO ; Jun PENG ; Xingwen LI ; Yuzhi MA ; Na WANG
Chinese Journal of Dermatology 2014;47(3):203-205
Objective To determine the distribution profile of apocrine sweat glands in axillary region of patients with axillary osmidrosis,and to compare their distribution at different sites.Methods Fifteen patients with axillary osmidrosis were enrolled in this study from September to December 2010.All the patients underwent surgical removal of apocrine sweat glands under direct vision.Full-thickness skin tissue measuring 2 mm in width was excised down to the axillary superficial fascia at the incisional surgical sites from five patients.Five points,which were at the center of axillary region (point 1),1 cm away from the center of axillary region (point 2),1 cm inside the edge of axillary hair-bearing area (point 3),the edge of axillary hair-bearing area (point 4),and 1 cm outside the edge of axillary hair-bearing area (point 5),were marked,and dark red,rough granular subcutaneous tissue was obtained at these points in 10 patients with axillary osmidrosis.Results The secretory portion of apocrine sweat glands was mainly distributed in the reticular dennis and superficial subcutaneous adipose tissue,but no apocrine sweat glands were obs erred in the epidermis,dermal papilla or axillary superficial fascia.The distribution profile of apocrine sweat glands was consistent with that of axillary hairs.There were numerous apocrine sweat glands in the center of axillary region,but only a small number at the edge of axillary hair-bearing area,and no apocrine sweat gland was observed at 1 cm outside the edge.The percentage of apocrine sweat gland area at point 1-5 was 74.1%,46.6%,25.3%,2.1%,and 0 respectively,with significant differences between point 1 and 2 (t--29.78,P< 0.01),point 2 and 3 (t--9.76,P< 0.01),point 3 and 4 (t =20.83,P< 0.01),but not between point 4 and 5 (t =1.96,P > 0.05).Conclusions During the surgical treatment of axillary osmidrosis,the removal of apocrine sweat glands should be extended to the reticular dennis and superficial subcutaneous adipose tissue in depth and the edge of axillary hair-bearing area in width,and there is no need to blindly increase the extent of removal.
5.Analysis of prognostic factors in patients with stageⅠB2-ⅡA2 uterine cervical cancer treated with a combintion of neoadjuvant chemotherapy and surgery
Jian LIU ; Yanyan CUI ; Shengze LI ; Ling MA ; Qun LI ; Yuzhi LI ; Suyang GUO ; Jingbo LIU
China Oncology 2016;26(5):427-433
Background and purpose:The aim of this study was to analyze the prognostic factors in uterine adenocarcinoma and adenosquamous carcinoma treated with a combination of neoadjuvant chemoradiotherapy and surgery.Methods:Clinicopathologic data from 50 patients with stageⅠB2-ⅡA2 uterine cervical cancer were collected from the First Afifliated Hospital of Bengbu Medical College between Apr. 2005 and Oct. 2011. All patients underwent neoajuvant chemoradiotherapy, followed by radical hysterectomy and pelvic lymph node dissection. Before surgery, an intravenous chemotherapy was given. A particular vaginal brachytherapy was given to those with tumor diameter≥6 cm. The survival and recurrence in patients were analyzed retrospectively to investigate the prognostic factors. Results:In 50 patients withⅠB2-ⅡA2 uterine adenocarcinoma and adenosquamous carcinoma, 15 died during the follow-up period. The 2-year and 5-year progression-free survival rates were 80.12% and 72.24%, respectively, and median progression-free survival was 68 months. The 2-year and 5-year overall survival rates were 95.38% and 73.56%, respectively, and median overall survival was 80 months. Univariate analysis revealed that pelvic lymph node metastasis, cervical stromal invasion, parametrial infiltration, tumor diameter reduction <3 cm and advanced stage were the prognostic factors in patients with cervical cancer (P<0.05). Age, postoperative radiochemotherapy, lymphatic clearance involvement, FIGO stage, preservation of ovary and pathologic type were not associated with prognosis (P>0.05). Multivariate Cox proportional analysis revealed that pelvic lymph node metastasis and tumor diameter reduction after radiation and chemotherapy were the independent prognostic factors in patients with cervical cancer. Conclusion:The combination of neoadjuvant chemotherapy and surgery improves the resectable rate of patients withⅠB2-ⅡA2 uterine adenocarcinoma and adenosquamous carcinoma. Pelvic lymph node metastasis and tumor diameter reduction after radiation and chemotherapy are the independent prognostic factors in patients with cervical cancer.
6.The construction of phIFN-?-2B shuttle plasmid and its expression in BCG
Chunyu LIU ; Ruifa HAN ; Tengxiang MA ; Jiwu CHANG ; Yuzhi HAN ; Zhifang SUI
Chinese Journal of Urology 2006;0(S1):-
Objective To construct a new secreting recombinant hIFN-?-2B-BCG to provide a new tool for the treatment of bladder tumor. Methods BCG was genetically engineered to secrete recombinant human interferon-alpha 2B by transforming of shuttle plasmid phIFN-?-2B. Expression of hIFN-? was readily detectable by ELISA. Results The phIFN-?-2B was transformed in BCG correctly,and the value of hIFN-?-2B in supernatant of recombinant BCG culture was calculated to approximately 997.2 pg/ml. Conclusions This study demonstrates that the recombinant phIFN-?-2B can be expressed in BCG secretively. As the construction of the plasmid and its transformation and expression in BCG were accomplished successfully, a foundation of reformed BCG and new vaccine will be established.
7.Comparative study on the allergic characteristics and trigger factors of rural and urban children asthma in Beijing
Li SHA ; Mingjun SHAO ; Xu LU ; Huiying CUI ; Haixia MA ; Wenjing ZHU ; Zhe YANG ; Chuanhe LIU ; Zhiyao WANG ; Yuzhi CHEN
Chinese Journal of Applied Clinical Pediatrics 2017;32(9):702-704
8.Epidemic and clinical characteristics of measles in Northeast China in 2014:an analysis of 1 401 cases
Yuguang YAN ; Yumei MA ; Ni WEI ; Mingxiang ZHANG ; Baiyila HAN ; Yanbo WANG ; Chunying JIN ; Leqiang HAN ; Yongxiang ZHAO ; Yuzhi CAO ; Hong FANG ; Hao HU ; Zheng LIU
Chinese Journal of Clinical Infectious Diseases 2015;(5):419-424
Objective To investigate the epidemiological and clinical characteristics of measles in patients of different age groups in Northeast China in 2014.Methods The clinical data of patients with measles in ten hospitals of infectious diseases in Northeast China from January 2014 to June 2014 were collected.Patients were divided into <16 age group and ≥16 age group, and the epidemiology , clinical characteristics, treatment and prognosis of all patients were retrospectively reviewed .SPSS 17.0 was used for data analysis.Results There were 1 401 patients with measles, in which 402 were <16-year old, and 999 were ≥16-year old.Clinical manifestations were mainly maculopapule (100.0%), fever (84.58%), cough (85.80%), Koplik’ s spot (73.23%), pharyngeal hyperemia (71.23%), diarrhea (43.97%), expectoration (40.97%), tears (39.40%) and runny nose (30.55%).The incidences of Koplik’s spot, sputum, pharyngeal hyperemia and diarrhea in <16 age group were lower than those in ≥16 age group (χ2 =8.364, 29.768, 10.953 and 6.701, P<0.05 or <0.01); while the incidence of runny nose was higher than that in ≥16 age group (χ2 =6.703, P<0.05).Abnormalities were found in blood routine examination, C-reactive protein (CRP), liver and kidney function, serum electrolyte levels, myocardial enzymes, and so on.Increasing in WBC, PLT and creatine kinase isoenzyme (CKMB), and decreasing in WBC were observed in 38(9.45%), 122(30.35%), 279(69.40%) and 105(26.12%), patients in <16 age group, which were higher than those in ≥16 age group [45(4.5%), 14(1.40%), 347(34.73%) and 202(20.22%)], and the differences were of statistical significance (χ2 =12.593, 274.033, 139.385 and 5.830, P<0.05 or P<0.01).Increasing in alanine aminotransferase (ALT), CRP, total bilirubin level (TBil), creatine kinase (CK), and decreasing in albumin (Alb), K+, Na+, Cl-were observed in 70(17.41%), 7(1.74%), 38(9.45%), 7(1.74%), and 214(53.23%), 59(14.68%), 45(11.19%), 94(23.38%) patients in <16 age group, which were lower than those in ≥16 age group [668(66.87%), 89(8.91%), 277(27.73%), 714(71.47), and 268(26.83%), 339(33.93%), 642(64.26%), 450 (45.05%)], and the differences were of statistical significance (χ2 =281.230, 23.073, 50.687, 159.740, and 14.674,114.286, 44.268, 271.546, P<0.01).Laryngitis and pneumonia were the most common complications.The incidence of laryngitis in <16 age group was 12.69% (51/402), which was higher than that in ≥16 years group (93/999, 9.31%,χ2 =3.545, P<0.05);while the incidence of spot shadows demonstrated by X-ray in <16 years group ( 72.89%, 121/166 ) was higher than that in ≥16 years group (265/445, 59.55%,χ2 =9.249, P<0.01).Conclusions There are differences in clinical features of measles in patients between <16 age group and ≥16 age group.Basic immunization in children and revaccination in adults should be enhanced to control the epidemics of measles .
9.Relationship between lipidslevelsand right ventricular volume overload in congestive heart failure
Ying CHEN ; Xiaomei HE ; Hong MENG ; Qingzhen ZHAO ; Yuzhi ZHEN ; Li TIAN ; Le WANG ; Lishuang JI ; Guoping MA ; Yu TIAN ; Gang LIU ; Zhenguo JI ; Kunshen LIU ; Chao LIU
Journal of Geriatric Cardiology 2014;(3):192-199
BackgroundThe relationship between lipids and coronary artery disease has been well established. However, this is not the case between lipids and heart failure. Ironically, high lipid levels are associated with better outcomes in heart failure, but the mechan-isms underlying the phenomenon are not fully understood. This study was performed to test the hypothesis that reduced intestinal lipid absorption due to venous congestion may lead to low lipid levels.MethodsWe collected data of clinical characteristics, echocardio-graph, and lipid profile in 442 unselected patients with congestive heart failure. Correlations between lipid levels[including total cho-lesterol(TCL), high-density lipoprotein cholesterol(HDL-C), low-density lipoprotein cholesterol(LDL-C), and triglycerides(TG)]and right ventricle end diastolic diameter (RVEDD), left ventricle end diastolic diameter (LVEDD), right atrium diameter (RA), left atrium diameter (LA), or left ventricle ejection fraction (LVEF) were analyzed using Pearson correlation and partial correlation. RVEDD, LVEDD, RA, and LA were indexed to the body surface area.ResultsThere was a significantly inverse correlation between TCL le-vels and RVEDD (r=-0.34,P<0.001) and RA (r=-0.36,P<0.001). Other lipids such as LDL-C, HDL-C, and TG had asimilar inverse correlation with RVEDD and RA. All these correlations remained unchanged after adjusting for age, gender, smoking status, physical activity levels, comorbidities, and medication use.ConclusionsLipid levels were inversely correlated to RVEDD in patients with congestive heart failure; however, because this was an observational study, further investigation is needed to verify our results as wellas identify a causal relationship, if any.
10.Serum uric acid as an index of impaired renal function in congestive heart failure
Yu TIAN ; Ying CHEN ; Bao DENG ; Gang LIU ; Zhenguo JI ; Qingzhen ZHAO ; Yuzhi ZHEN ; Yanqiu GAO ; Li TIAN ; Le WANG ; Lishuang JI ; Guoping MA ; Kunshen LIU ; Chao LIU
Journal of Geriatric Cardiology 2012;09(2):137-142
Background Hyperuricemia is frequently present in patients with heart failure. Many pathological conditions, such as tissue ischemia, renal function impairment, cardiac function impairment, metabolic syndrome, and inflammatory status, may impact uric acid (UA) metabolism. This study was to assess their potential relations to UA metabolism in heart failure. Methods We retrospectively assessed clinical characteristics, echocardiological, renal, metabolic and inflammatory variables selected on the basis of previous evidence of their involvement in cardiovascular diseases and UA metabolism in a large cohort of randomly selected adults with congestive heart failure (n = 553). By clustering of indices, those variables were explored using factor analysis. Results In factor analysis, serum uric acid (SUA) formed part of a principal cluster of renal functional variables which included serum creatinine (SCr) and blood urea nitrogen (BUN). Univariate correlation coefficients between variables of patients with congestive heart failure showed that the strongest correlations for SUA were with BUN (r = 0.48, P < 0.001) and SCr (r = 0.47, P < 0.001). Conclusions There was an inverse relationship between SUA levels and measures of renal function in patients with congestive heart failure. The strong correlation between SUA and SCr and BUN levels suggests that elevated SUA concentrations reflect an impairment of renal function in heart failure.