1.Nasal continuous positive airway pressure in pediatric patients with respiratory failure after liver transplantation
Chinese Journal of Organ Transplantation 2016;37(2):70-75
Objective To evaluate the effect of nasal continuous positive airway pressure (nCPAP) in pediatric patients with respiratory failure after liver transplantation.Method A prospective? randomized controlled clinical trial was conducted during June 1st 2013 to June lst2015 in 71 pediatric patients with respiratory failure after liver transplantation.A total of 66 patients completed the trial and 5 patients quitted.Conventional oxygen therapy group included 35 cases and nCPAP group included 31 cases.The vital sign,blood-gas analysis,intra-abdominal pressure and prognosis were compared between the two groups.Result After nCPAP treatment,the heart rate,respiratory rate,and PCO2 decreased at 4 and 24 h (P<0.05),oxygenation index was improved at 24 and 48 h (P<0.05),and intra-abdominal pressure decreased at 48 h (P<0.05).nCPAP showed better outcome than conventional oxygen therapy (P<0.05).The incidence of refractory atelectasis,intra-abdominal hypertension,and epilepsy was higher in treatment failure population.Conclusion nCPAP is more suitable for pediatric patients with respiratory failure after liver transplantation,especially for those accompanied with intra-abdominal hypertension.
2.The clinical features and treatment of autoimmune hemolytic anemia in patients after orthotopic liver transplantation
Chinese Journal of Organ Transplantation 2015;36(1):15-19
Objective To analyze the clinical feature,pathogenesis and treatment of autoimmune hemolytic anemia (AIHA) in patients after orthotopic liver transplantation.Method A retrospective analysis was conducted on 7 patients who developed AHA after orthotopic liver transplantation.The clinical feature,pathogenesis and treatment of AIHA were reviewed.Result The incidence of AIHA was 0.98% (7/713).AIHA occurred (7.9-± 4.0) (3-14) days after transplantation.All patients were characterized by progressive anemia and jaundice.Laboratory examination showed lower hemoglobin and platelet count,higher lactate dehydrogenase,higher indirect bilirubin and higher reticuloeyte count.The causes of AIHA included ABO-incompatible liver transplantation,infection and repeated transfusion.Conclusion AIHA is a rare and serious complication after liver transplantation.The most cause is ABO-incompatible liver transplantation.The patients can be successfully cured if the diagnosis is clarified and the treatment is definitive.
3.Role of Tumor Necrosis Factor-Alpha Monoclonal Antibody in Cell Apoptosis after Combined Liver and Kidney Transplantation in Rats
Chinese Journal of Bases and Clinics in General Surgery 2003;0(03):-
Objective To investigate the potential role of tumor necrosis factor-alpha (TNF-?) in apoptosis after combined liver and kidney transplantation in rats. Methods Eighty rats which had combined liver and kidney transplantation were randomly paired, were divided into study group (n=20) and control group (n=20). 40 ml of 4 ℃ sodium chloride and anti-TNF-? monoclonal antibody (30 ml was infused from portal veins to donated livers and 10 ml from renal arteries to donated kidneys) were infused to the study group (0.1 mg/kg weight),and the same quantity of 4 ℃ sodium chloride was infused the control group. Venous blood was drew at different phases after the transplantations to detect the function of kidney and liver. The level of TNF-? and the cell apoptosis were detected in the transplanted tissues of liver and kidney by ELISA and terminal deoxynucleotidy transferase mediated dTUP-biotin nick-end labeling (TUNEL). Results The levels of AST, ACT, Cr and BUN in the study group were significantly lower than those of the control group at the same phases (P
4.The changes of diabetic diagnostic criteria and consideration of using glycosylated hemoglobin for diabetes diagnosis
Chinese Journal of Practical Internal Medicine 2001;0(09):-
The diagnostic criteria of diabetes has been changed several times in the latest thirty years.The diagnostic criteria is based on plenty of epidemic studies,especially the relationship between the glucose level and the microvascular complications.However,there are many problems in the clinical practice of using the recent diagnostic criteria(1999 WHO criteria).Glycosylated hemoglobin(HbA1c) has been recommended as a diagnostic criteria in the 69th ADA.
5.Anatomical and clinical study of reconstruction of the pateller ligament with vascularized medial tenden of gastrocnemius muscle
Chinese Journal of Microsurgery 2008;31(6):405-407,illust 1
Objective To provide a clinical method in the treatment of patellar ligament defect. Methods Based on morphologic observation and blood supply of the medial tenden of gastrocnemius muscle on 30 adult cadaverous lower limp specimens. Then transferring of sural arteries medial tendon of gastrocnemins muscle was designed and used in 4 patients clinically. Results The period of follow-up in all cases was 2-8 months. The knee joint recovered well with satisfactory function. Conclusion The operation is a simple and ideal procedure. The vascularizod adductor magnus tendon is a good donor in the reconstruction of patellar ligament defect. Microsurgical repair of patellar ligament defect is a effective method.
6.Experimental study on phillyrin resist mice immunosuppression induced by Cyclophosphamide
Chinese Journal of Immunology 2017;33(8):1177-1180
Objective:To study the effect of phillyrin on immune function in mice treated with cyclophosphamide.Methods: Mice model of immunosuppression was induced by intraperitoneal injection of cyclophosphamide,the mice in the experimental group received phillyrin with 50,100 and 150 mg/kg doses by gavage.While model group and control group received normal salin,all treatments continued 7 d.The thymus and spleen organ coefficients was measured by conventional methods.The phagocytosis of peritoneal macrophages was measured by FITC microspheres.The levels of IL-2,IL-4 and cAMP in peripheral blood were detected by ELISA.The effects of different doses of phillyrin on the above indexes were analyzed in immunosuppressed mice.Results: A mice model of immunosuppression was established after 7 d,the results showed that the immune organ index,phagocytic capacity of macrophages and the level of immune factors in serum could be improved,and the content of cAMP in peripheral blood lymphocytes was decreased in different degree by phillyrin.Conclusion: Phillyrin has the function of immune regulation,which can resist the immunosuppression of cyclophosphamide.
7.Perioperative toll-like receptor 4 and CD80 levels and their clinical significance in renal transplantation recipients
Lixin YU ; Zhonghai LI ; Yuming YU
Chinese Journal of Urology 2009;30(5):320-323
Objective To investigate the dynamic expression and clinical significance of toll-like receptor 4(TLR4)/CD80 in patients before and early after renal transplantation. Methods Thirty-two patients who received renal transplantation were enrolled in his study. All of them were primary recipients, and the level of panal reactive antibody less than 1%. The expression of TLR4 and CD80 in CD14, positive monocyte of peripheral blood from atients on the 1st, 4th, 7th, 14th, 21st, 28th and 35 th days after transplantation were measured by three-color fluorescent taining flow cytometry. The pa-tients were divided into rejection roup(7 cases) and non-rejection group(25 cases) according to rejec-tion episode record within 2 weeks. Normal control group(10 cases) enrolled healthy adult volunteers. Diagnosis of acute rejection depended on clinical symptoms, lab test, color doppler onography and re-nal biopsy. Results Before ransplanstation, the ressions of TLR4 and CD80 were (8.03± 0.84)% and (0.85±0.31)% in rejection group, (6.14±0.85)% and (0.84±0.39)% in non-rejec-tion group, (6.37±0.56)% and (0.85±0.35)% in normal control group. The expression of TLR4 of rejection group was higher than those of non-rejection group and normal control group(P<0.01). The expressions of CD80 of 3 groups had no significant difference(P=0.995). After ransplanstation, the expressions of TLR4 and CD80 increased to (16.50±1.02)% and (7.82±1.66)% in rejection group, (11.60±0.98)% and (2.26±0.96)% in non-rejection group at the 4th day, and reached the peak levels at the 7th day: (36.40±4.86)% and (9.53±1.97)% in rejection group, (22.70± 3.45)% and (1.87±0.72)% in non-rejection group, then displayed downtrend, rejection group de-creased to (7.10±0.82)% and (0.87±0.57)% at the 35th day, non-rejection group decreased to (7.20±0.76)% and (0.81±0.37)% at the 21st day. Compared with non-rejection group, rejection group showed higher peak expression value of TLR4/CD80 (P<0.01) and longer lasting time. Con-clusions The high expression of TLR4 may increase the risk of acute rejection. The up-regulated TLR4/CD80 levels early after renal transplantation may ontribute to the happeness of acute rejection.
8.Clinical study of ulinastatin in relieving the warm ischemia injury of renal graft
Wenfeng DENG ; Lixin YU ; Yuming YU
Chinese Journal of Urology 2001;0(11):-
0.05). In group B,the serum creatinine levels of cases treated with ulinastatin at 1,3,7,10 and 14 days after renal transplantation were (372.6? 128.1 ),(278.4?38.9),(145.9? 47.2 ),(133.2?39.8),(128.0?30.6)?mol/L,respectively;the values of controls were (496.3?125.6),(364.7?60.2),(196.2?36.8),(161.4?41.5),(149.8? 33.5 )?mol/L,respectively ( P
9.Changes of PRA and effects of HLA sensitized paths in patients waiting for renal transplantation
Lulu XIAO ; Lixin YU ; Keli ZHENG
Chinese Journal of Organ Transplantation 2012;33(3):133-136
Objective To investigate the changes of panel reaction antibody (PRA) and the effects of HLA sensitized paths in patients waiting for renal transplantation.Methods PRA of 10 555 samples from 8926 renal transplant recipients in 51 transplant centers was analyzed.In 1991-1998 group,PRA was by using NIH-CDC technique,and in 1999-2010 group,PRA was detected by using ELISA.The effects of blood transfusion,pregnancy and transplantation on the PRA positive rate were analyzed.Results There were 1324 recipients positive for PRA in 8926 (14.83 % ).The average PRA positive rate in 1991 1998 group and 1999-2010 group was 18.17% (513/2823) and 13.29% (811/6103) repectively (P<0.01).Among 1324 PRA positive recipients,the number of recipients with PRA of 1%-30% and PRA of ≥30% respectively accounted for 71.83% and 28.17%.There were statistically significant differences in the PRA positive rate between the recipients receiving blood transfusion and those without blood transfusion (31.77% vs 1.21%,P < 0.01 ),between the recipients having pregnancy history and those without pregnancy history (24.64% vs 7.19%,P< 0.01 ),and between primary transplant and re-transplant recipients (13.35 % vs 40.62%,P<0.01).Conclusion In last 20 years, PRA in majority of PRA positive recipients was < 30% (low sensitized).Renal transplantation and blood transfusion were the important influencing factors that led to positive PRA,and pregnancy history was a related factor.
10.Research of Automatic QT Interval Detection Based on Morphological Method
Hui YU ; Fei DU ; Lixin ZHANG
Space Medicine & Medical Engineering 2006;0(01):-
Objective To study and design a new algorithm of QT interval measurement based on multi-scale morphological derivative transform(MMDT) according to the demands of mobile monitoring platform.Methods After the MMDT of ECG signals by inducing a triangle and a short line as a pair of structure elements,they were classified into four types by their morphological characteristics and the optimal strategy for each type was described to detect the onset of Q-wave.By introducing the "wing" function,two referenced points of T peak were picked out,which was helpful to locate the peak and offset of T wave,and improve the precision and recognition rate of MMDT method when detecting the bifid T wave(90.9%)and biphasic T wave(86.7%).Results Eighty data records from CSE database were used to evaluate the availability.By contrast with the wavelet transform method,the statistical results showed that the proposed algorithm had generally less error and smaller standard deviation especially for abnormal-phase T wave.Conclusion Compared with those algorithms based on wavelet transform and self-adaptive threshold techniques,our algorithm needs less empirical parameters and calculation.It is also suitable for mobile monitoring and HOLTER system,and has a wide prospect of application.