Animals ; Cell Culture Techniques ; methods ; Cell Separation ; methods ; Culture Media ; Epithelial Cells ; cytology ; Respiratory System ; cytology ; Swine

Objective To compare the two kinds of purification method for purifying recombinant human cardiac troponin I(cT-nI)to obtain the stable cTnI and promote the study of cTnI diagnosis standardization.Methods The cTnI inclusion body was ob-tained by the ultrasonic broken engineering,after washing by 2% Tritonx-100,2M urea,dissolved in 8M urea,then purified by the column refolding on CM-FF and the dilution refolding respectively.The cTnI yields were compared between the two kinds of meth-od and the stability at 4 ℃,20 ℃,-80 ℃ and on the freeze-dried condition was compared.Then the purification method to effi-ciently obtain the stable cTnI was established.Results The protein about 2 mg and 1.4 mg could be obtained by CM-FF on the col-umn refolding and the dilution refolding from 0.1 g of wet inclusion body,respectively.The former method had the short cycle and high efficiency.The cTnI purified by the column refolding on CM-FF was more stable at 4 ℃,20 ℃,-80 ℃ and on the freeze-dried condition.Conclusion The column refolding on CM-FF is more stable and highly efficient in purification of cTnI than the dilution refolding.

Objective:To observe influence of alprostadil injection on contrast-induced nephropathy (CIN) in high risk patients after percutaneous coronary intervention (PCI).Methods: A total of 263 CIN high risk (CIN risk score ≥16 scores) patients were selected.According to random number table, patients were randomly divided into routine treatment group (n=121, received routine hydration therapy) and alprostadil group (n=142, received additional alprostadil injection based on routine treatment group).Serum creatinine (SCr), glomerular filtration rate(GFR), cystatin C (CysC) and β trace protein (β-TP) level before, 48h and 72h after PCI were measured and compared, and incidence rate of CIN, percentage of blood purification therapy and mortality were compared between two groups.Results: Compared with before PCI, there was significant rise in SCr level and significant reduction in GFR in both groups on 48h and 72h after PCI (P<0.01 all);Compared with routine treatment group, there were significant reductions in levels of SCr [72h: (190.04±28.92) μmol/L vs.(141.10±21.18) μmol/L], and significant rise in GFR [72h: (26.0±4.4) ml/min vs.(36.4±4.9) ml/min], and levels of CysC[72h: (1.75±0.74) mg/L vs.(1.47±0.55) mg/L] and β-TP [72h: (1.53±0.50) mg/L vs.(1.22±0.38) mg/L] significantly decreased in alprostadil group on 48h and 72h after PCI, P<0.05 or <0.01;there were significant reductions in incidence rate of CIN (30.6% vs.18.3%) and percentage of blood purification therapy (10.7% vs.3.5%) in alprostadil group, P=0.001, 0.045 respectively.There was no significant difference in mortality between two groups, P=0.728.Conclusion: Alprostadil injection can significantly improve kidney function, reduce incidence rate of CIN and percentage of blood purification therapy in CIN high risk patients after PCI, which is worth extending.

Objective To explore the characteristic of transcranial color-coded sonography(TCCS)and contrast-enhanced transcranial color-coded sonography (CE-TCCS) in patients with intracerebral hemorrhage and thiers clinical value.Methods 66 patients were randomly selected,whose preliminary clinical diagnosis were intracerebral hemorrhage (ICH).The patients were followed up by TCCS in acute phase,subacute phase and chronic phase.The changes of the echo,boundary and the hematoma volume were recorded in different stages.In acute phase,patients' complications of intracerebral structure were observed.32 patients were selected randomly to underwent CE-TCCS examination in the subacute phase.The size,shape and the perfusion situation of hematoma were observed.The results of CE-TCCS were compared with the results of TCCS.Correlation analysis was made between the results of ultrasound and CT scan.Results (1) CT results:61 patients (61/66) were confirmed ICH through CT scan.(2) TCCS results:50 patients (50/61) with ICH could show the bleeding site.TCCS showed that 33 patients with ICH accompanied by intraventricular pressure,haematoma defeats ventricle and midline shift in acute phase.The echo became lower and the boundary became more clear with time.The long diameter,wide diameter,thickness diameter and volume of hematoma in different stages on TCCS had a good correlation with that on CT scan.(3)CE-TCCS results:30 cases of intracerebral hematoma could be clearly displayed the situation of hematoma through the ipsilateral temporal window.Compared with TCCS,CE TCCS had a better correlation with CT scan on the measurement of the hematoma length,width.The images of 2 cases observed through contralateral temporal window failded to be clearly shown.In 7 cases of ICH,visible low-enhanced edema area could be seen around the hematoma.The width of the edema area had a good correlation with the CTP result.Conclusions TCCS could clearly show the bleeding sites,hematoma volume and complications and the features of ICH in different stages of disease.TCCS could be used to monitor the condition of patients with ICH and recognized the disease progression initially.CE-TCCS had a much more clear display of intracerebral hematoma location,shape,boundary.At the same time,CE-TCCS could provide blood perfusion information of surrounding tissue in hematoma so that it could observe the change of peripheral edema more convenient.

A 52-year-old female patient with Hashimoto encephalopathy was admitted to hospital for clinical treatment, and the findings on MR spectroscopy (MRS) and MR imaging (MRI) in the brain were reported. MRS revealed the decreases in N-acetylaspartate (NAA/Cr=1.19) and myo-inositol peaks, and the elevations in lipid, lactate, glutamate/glutamine multiplet and choline (Cho/Cr=1.21) peaks which supported a cerebral inflammatory change, in addition to multifocal hyperintensities on T2WI and fluid-attenuated inversion recovery (FLAIR) images, slight hyperintensities on diffusion weighted imaging (DWI), hypointensities on T1WI. The atrophy of the brain was revealed on follow-up MRI two years later.
Brain Diseases ; diagnosis ; Encephalitis ; Female ; Hashimoto Disease ; diagnosis ; Humans ; Magnetic Resonance Spectroscopy ; Middle Aged

OBJECTIVETo retrospectively survey frostbite in patients living in plain regions, and to analyze the features of frostbite and the results after hospitalization.

METHODSFifty-nine patients with frostbite, aged from 15 to 85 years admitted in Beijing Jishuitan Hospital from 1992 to 2007, were enrolled in this study. Occupation, cause of the injury, initial visit time, position and degree of depth (assessed according to the standard of burn injury) of frostbite, and amputation rate of patients were recorded and analyzed.

RESULTSMost patients of the 59 cases were workers or unemployed, the main reasons of injury were prolonged contact with material in a low temperature, with impaired consciousness, and having an out-door activity. The average first visit time was 11 days after the exposure. Frostbite was superficial 2(nd) to deep 2(nd) degree in 12 patients, while 47 patients were found to have 3(rd) to 4(th) degree injury. Limbs, or fingers and toes were amputated from 40 patients. The differences between patients visited within 3 days after frostbite and patients visited later than 3 days in respect of degree of depth of frostbite and amputation rate were statistically significant (P < 0.05). There was no significant difference in amputation rates in different body parts of frostbite (P > 0.05).

CONCLUSIONSPatients in plain regions mainly suffer frostbite at the distal portions of the extremities. They should visit hospital early after injury so that the degree of frostbite can be alleviated and rate of amputation can be lowered.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Amputation ; Female ; Frostbite ; surgery ; therapy ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Young Adult

Objective To assess and optimize the dosage regimens of nor-vancomycin in patients with different renal functions.Methods The minimum inhibitory concentration ( MIC ) distribution was determined by agar dilution method with the target value of AUC 0-24/MIC≥638.Ten thousand cases in virtue of Monte Carlo simulation were performed in dif-ferent doses to obtain probabilities of target attainment ( PTA) and cumu-lative fractions of response ( CFR ) in patients with different renal func-tions.Results For the patients with normal renal function , when En-terococcus faecium and Enterococcus faecalis were treated with recommen-ded dose , from 0.8 to 1.6 g· d-1 , the CFR were lower than 59.77%.The CFR could reach to 83.95%and 73.10%when the dose was adjus-ted to 2.5 g· d -1.For the patients with moderate renal function insuffi-ciency , the CFR could reach to 82.81% at the dose of 0.8 g · d -1 against Enterococcus faecalis.The CFR could reach from 73.10% to 86.84%at the dose from 0.8 to 2.5 g · d-1 in the process of treating Enterococcus faecium.For the patients with severe renal function insuffi-ciency , the CFR could reach to 97.77% and 85.90% respectively a-gainst Enterococcus faecalis and Enterococcus faecium.Conclusion Monte Carlo simulation provides dosage regimens and the norvancomycin regimen is complemented and optimized.

BACKGROUNDIntra-articular fractures of the fingers are common problems to emergency physicians and hand surgeons. Inappropriate management of these injuries may result in chronic pain, stiffness, deformity, or post traumatic arthritis. Ideal treatment necessitates the restoration of a stable and congruent joint that will allow early mobilization. The purpose of this study was to investigate the results of intra-articular fracture of the fingers by mini external fixator combined with limited internal fixation.

METHODSFrom May 2005 to May 2007, a total of 26 patients with intra-articular fracture of the fingers were treated by mini external fixator combined with limited internal fixation. Of the 26 cases, 11 involved in metacarpophalangeal joint, and 15 interphalangeal joint in proximal interphalangeal. Kirschner wire, mini wire and absorbable suture were used for limited internal fixation. All patients were followed up and patients were accomplished with total active motion (TAM) of fingers.

RESULTSAll patients were reviewed by an independent observer. The mean follow up was 13 months (range 9 to 24 months). Subjective, objective and radiographic results were evaluated. X-ray films revealed fracture union and the average radiographic union time was 7 weeks with a range of 5 - 12 weeks and the phalange shortening or rotation in 2 cases, joint incongruity (less than 1 mm) and joint space narrowing in 3 cases respectively. Phalangeal shortening or rotation was observed in 2 cases and joint incongruity or joint space narrowing was observed in 3 cases. An artificial implant was performed on one case for traumatic arthritis 1.5 years after surgery. Based on TAM the overall good-excellent rate of joint motion function was 80.8%.

CONCLUSIONMini external fixator combined with limited internal fixation is a reliable and effective method for treatment of intra-articular fracture of the fingers.

Adolescent ; Adult ; External Fixators ; Female ; Finger Joint ; surgery ; Fracture Fixation, Internal ; methods ; Humans ; Intra-Articular Fractures ; surgery ; Male ; Middle Aged ; Treatment Outcome ; Young Adult

Background Intra-articular fractures of the fingers are common problems to emergency physicians and hand surgeons.Inappropriate management of these injuries may result in chronic pain,stiffness,deformity,or post traumatic arthritis.Ideal treatment necessitates the restoration of a stable and congruent joint that will allow early mobilization.The purpose of this study was to investigate the results of intra-articular fracture of the fingers by mini external fixator combined with limited internal fixation.Methods From May 2005 to May 2007,a total of 26 patients with intra-articular fracture of the fingers were treated by mini external fixator combined with limited internal fixation.Of the 26 cases,11 involved in metacarpophalangeal joint,and 15 interphalangeal joint in proximal interphalangeal.Kirschner wire,mini wire and absorbable suture were used for limited internal fixation.All patients were followed up and patients were accomplished with total active motion(TAM)of fingers.Results All patients were reviewed by an independent observer.The mean follow up was 13 months(range 9 to 24 months).Subjective,objective and radiographic results were evaluated.X-ray films revealed fracture union and the average radiographic union time was 7 weeks with a range of 5-12 weeks and the phalange shortening or rotation in 2 cases,joint incongruity(less than 1 mm)and joint space narrowing in 3 cases respectively.Phalangeal shortening or rotation was observed in 2 cases and joint incongruity or joint space narrowing was observed in 3 cases.An artificial implant was performed on one case for traumatic arthritis 1.5 years after surgery.Based on TAM the overall good-excellent rate of joint motion function was 80.8%.Conclusion Mini external fixator combined with limited internal fixation is a reliable and effective method for treatment of intra-articular fracture of the fingers.

Objective To observe the effects of Jieduan Niwan Prescription on IL-6 and TNF-α in serum and hepatic tissue in acute-on-chronic liver failure rats (ACLF); To study the partial mechanism of the treatment for ACLF. Methods The ACLF rat model was established by using human serum albumin immuno-induced hepatic fibrosis followed with D-galactosamine and lipopolysaccharide joint acute attack. The SPF Wistar male rats were randomly divided into normal group, model group and Jieduan Niwan Prescription group, respectively. The Jieduan Niwan Prescription group was treated by Jieduan Niwan Prescription after the acute attack for 24 h, and the rats were sacrificed respectively at 5, 10 and 15 days after gavage administration. Transmission electron microscope was employed to observe the ultrastructural changes in liver cells and ELISA was used to detect the contents of IL-6 and TNF-α in serum and liver tissue, respectively. Results Compared with the normal group, the contents of serum and liver tissue IL-6 and TNF-α in model group increased at each time point. Compared with the model group, the contents of serum and liver tissue IL-6 and TNF-α decreased in Jieduan Niwan Prescription group, especially in 15 days. Under the transmission electron microscope, the changes of ultrastructure of liver tissue were observed. With the passage of time, the degree of hepatocyte injury in model group gradually increased, but decreased significantly in Jieduan Niwan Prescription group at each time point. Conclusion Jieduan Niwan Prescription can effectively reduce the levels of IL-6 and TNF-α in serum and liver tissue, reduce the degree of liver damage, and has a certain protective effect on the liver.