Objective To establish a mice model of cisplatin-induced ototoxicity and to investigate the effect of cisplatin on the expression of caspase-3 in mouse cochlea.Methods Totally 69 Kunming mice were randomly divided into control group,cisplatin 2.5mg/(kg?d) group,cisplatin 3.5mg/(kg?d) group and cisplatin 4.5mg/(kg?d)group.Mice were injected intraperitoneally for 5 days.Auditory brainstem response(ABR) was measured to observe the change of hearing.Envision method of immunohistochemistry was applied to detect the expression of caspase-3 in cochlea.Results The weight and hearing of mice in different dose cisplatin groups were declined significantly as compared with those in control group(P

Objective To evaluate the value of reconstruction of three-dimentional CT in development dislocation of hip(DDH)in children.Methods Twelve cases of DDH concluded 4 bilateral and 8 unilateral cases.To sum up,16 sick hips were operated and 8 normal hips were also obtained by three-dimensional CT(Hip speed Fi/x,GE Co).Results 3D reconstruction were used to show femoral head,(acetabulum) and relationship of acetabulum and femoral head respectively.The difference between FNA measurement of sick hips and those of normal hips were significant(P

Objective To investigate the clinical epidemiologic features of transient synovitis(TS) of hip in children occurred in Shen-zhen district.Methods The medical files were reviewed and a standard questionnaire was filled according to the conditions of 705 cases such as pathogeny,clinical manifestation,therapy and prognosis.Results Transient synovitis occurred in a sporadic form all the year round.The peak age of patients with TS was 3-7 years old.The ratio of boys to girls was 2.9:1.About 19.3% patients were attacked an upper respiratory tract infection and 11.9% patients attributed the symptoms to trauma or severe activities before 1 week.A varying degree of painful limp and restriction of movement at the hip were found clinically.All of cases were cured by skin traction.The incidence of recurrence was 6.95%.Conclusions Male predominance is found in TS.It is characteristic of sporadic form in the 4 seasons and intently relation to an upper respiratory tract infection and trauma or severe activities.TS is recurrent and the prognosis is good by skin traction.

Objective To investigate the influence of CT-guided thermochemotherapy for pig's healthy pancreas and in turn to discuss the feasibility and efficacy on pancreatic tumors.Methods 9 healthy pigs were undergone CT-guided 80℃themochemotherapy with 18 G fine meedle injecting individually of 5-Fu 750mg(10 ml)into the pancreatic tail within 2min.CT,MRI and serum analyses test were carried out as the follow up study at 1h,3rd,7th and 14th day after the procedure;since the 3rd day,3 pigs were sacrificed right after every follow up and together with comparative study between diagnostic imagings and pathologic changes. Results The pig pancreatic tail necrotic lesions appeared to be most conspicuous at the 3rd day after thermochemotherapy and shrank gradually from 7th day to 14th day.Serum amylase level reached the highest at 3rd day after the treatment and lowered down at 7th day;and near approximately normal at 14th day.The outcomings of diagnostic imagings and macroscopic pathology were in accordance.Obvious pancreatitis occurred only in one pig and all others were nearly uneventful without serious complications of pancreatitis,intestinal adhesion and mortaligy.Conclusion CT-guided themochemotherapy can induce pancreatic,focal necrosis in healthy pig but with no serious complications;and these can further more establish the foundation for clinical practiee.(J Intervent Radiol,2007,16:844-846)

Adolescent ; Adult ; Aged ; Brain ; blood supply ; diagnostic imaging ; Carbon Monoxide Poisoning ; diagnostic imaging ; Child ; Female ; Humans ; Male ; Middle Aged ; Tomography, Emission-Computed, Single-Photon

This study was aimed to analyze hemoglobin F (HbF) level and single nucleotide polymorphisms at rs11886868 locus of BCL11A gene in β-thalassemia patients, and to explore correlation between them. 89 mild β-thalassemia patients with known mutations were registered, and HbF levels were determined by capillary electrophoresis. Genomic DNA was extracted from peripheral leukocytes, fragment including rs11886868 locus in BCL11A gene was amplified by PCR, and polymorphism was determined by DNA sequencing. The results showed that 2 polymorphisms including C and T were found at rs11886868 locus in BCL11A gene among 89 mild β-thalassemia patients. HbF levels in red blood cells were (4.47 ± 3.42)% and (2.79 ± 2.21)% for β-thalassemia patients carrying C/C and C/T haplotypes, respectively. There was difference between 2 haplotype groups. It is concluded that the C and T polymorphisms are found at rs11886868 locus in the BCL11A gene for β-thalassemia patients. C polymorphism may be related to high HbF expression in red blood cells.
Adolescent ; Adult ; Carrier Proteins ; genetics ; Child ; Female ; Fetal Hemoglobin ; metabolism ; Haplotypes ; Humans ; Male ; Middle Aged ; Nuclear Proteins ; genetics ; Polymorphism, Single Nucleotide ; Young Adult ; beta-Thalassemia ; blood ; genetics

This study was aimed to analyze the β-globin gene mutations in a patient with β-thalassemia minor. Genomic DNA was extracted from peripheral blood cells of the patient. The full-length DNA sequence coding for β-globin was amplified by polymerase chain reaction, and the gene mutation was determined by DNA sequencing. The results indicated that a heterogeneous A→G mutation was found at position 129 in intron 1 of the β-thalassemia minor patient. It is concluded that the IVS-I-129(A→G) mutation is a splicing site mutation leading to a splicing error in immature messenger RNA and a protein translation error for the β-globin gene. Thus, the IVS-I-129(A→G) is a novel mutation.
Adult ; Base Sequence ; DNA Mutational Analysis ; Female ; Humans ; Introns ; Point Mutation ; Protein Biosynthesis ; RNA Splice Sites ; beta-Globins ; genetics ; beta-Thalassemia ; genetics

AIMTo investigate the mechanism through which insulin affect the learning and memory abilities of the Alzheimer's disease-like rats.

METHODSOkadaic acid (OA) was injected into the CA1 region of the rat hippocampus and the insulin was injected into the lateral cerebral ventricle of the rats. The learning and memory abilities of the rats were assessed through Morriswater maze behavioral test, and the expressions of nicotinic acetylcholine receptors and GFAP were observed by Westem blotting and immunohistochemistry, respectively.

RESULTSCompared with the control rats, the abilities of learning and memory were lowered significantly (P < 0.01) and the expressions of the nicotinic acetylcholine receptors were decreased and the GFAP positive astrocytes were increased greatly in the model rats (P < 0.05). In the rats injected with insulin, it was found that their learning and memory abilities were improved significantly (P < 0.01) and that the expression of the nicotinic acetylcholine receptors were increased and GFAP positive astrocytes were decreased obviously (P < 0.05), as compared with the model rats.

CONCLUSIONInsulin is able to enhance the learning and memory abilities of the Alzheimer's disease-like rats, possibly by improving the function of the acetylcholine system and decreasing the astrocytes proliferation in the brain.

Alzheimer Disease ; physiopathology ; Animals ; Glial Fibrillary Acidic Protein ; metabolism ; Insulin ; pharmacology ; Learning ; drug effects ; Male ; Memory ; drug effects ; Random Allocation ; Rats ; Rats, Wistar ; Receptors, Nicotinic ; metabolism

The aim was to develop a single multiple-epitope fusion antigen which incorporates all of the major immunodominant epitopes from the six functional regions of the HCV genome. A nucleic acid sequence consisting of viral core, E1, E2, NS3, NS4, and NS5 regions was constructed and inserted into the Promega Pinpoint Xa-1 T vector for inducing expression. The protein was expressed in JM109 (DE3) as a fusion protein with a 13 kD biotinlated tag to be used for detection and affinity purification. Immunogenicity and biotinylated tag of the fusion protein were detected by Western blot analysis with positive anti-HCV serum and streptavidin alkaline phosphatase. After purified by Promega SoftLink Soft Release Avidin Resin, the protein was pre-coated on microwell and detected with anti-core, anti-NS3, anti-NS4 and anti-NS5 positive sera by EIA, respectively. The results indicated that the recombinant soluble protein was expressed and labelled with biotin successfully, it reacted with anti-HCV positive serum, and exposed all of the major immunogenic epitopes chosen. In conclusion, this recombinant antigen may be used to design an double antigen sandwich anti-HCV immunoassay.
Antigens, Viral ; genetics ; immunology ; Biotinylation ; Cloning, Molecular ; Enzyme-Linked Immunosorbent Assay ; Hepacivirus ; immunology ; Hepatitis C Antibodies ; blood ; Humans ; Immunodominant Epitopes ; Recombinant Fusion Proteins ; genetics ; immunology

BACKGROUNDPatients with pelvic fractures are often treated in hospitals without the capacity to implement an open reduction internal fixation (ORIF). This often leads to pelvic malunion in patients with unstable pelvic fracture, shock or even death due to uncontrollable pelvic hemorrhage and unstable hemodynamics. This study explored the role of early external fixation (within 7 days) for patients with unstable pelvic fractures.

METHODSA retrospective analysis was conducted on 32 patients with unstable pelvic fractures treated with early external fixation from January 2005 to January 2010 (Tile type B: 18 cases; C: 14 cases). The study comprised 28 males and 4 females, with a mean age of (32 ± 8) years (range, 21-56 years). Of these patients, 22 were treated with emergency pelvic external fixation and 10 were treated with external fixation within 1-7 days. Fifteen cases suffered traumatic hemorrhagic shock. A statistical analysis was conducted to compare fluid infusion and blood transfusion volumes within the first 24 hours of these shock patients with another cohort of patients treated without early external fixation from January 1993 to January 1998.

RESULTSThe average follow-up was (34.7 ± 14.6) months (range, 6-66 months). Six to eight weeks after external fixation, patients could walk with crutches; by 12 weeks, external fixation was removed and all fractures had healed. Seven patients presented with sequelae, including 3 patients with long-term lumbosacral pain, 3 patients with erectile dysfunction and 1 patient with Morel-Lavallee lesion and other complications. The 15 shock patients in this study (2005-2010 group) required significantly lower volumes of fluid infusion and blood transfusion (P(fluid) = 0.000; P(transfusion) = 0.000) as compared to the 1993-1998 cohort.

CONCLUSIONSThe early application of external fixation in unstable pelvic fracture patients positively affects hemodynamic stability, with outstanding efficacy as a final fixation option for unstable pelvic fractures.

Adult ; External Fixators ; Female ; Fracture Fixation ; methods ; Fractures, Bone ; physiopathology ; surgery ; Hemodynamics ; Humans ; Male ; Middle Aged ; Pelvic Bones ; injuries ; Retrospective Studies