There is still evident gap between the humanity education of medical college in China and the foreign country's.We can find the heart of the matter and explore ways of solving the problem,by comparing the present condition of the humanity education of medical college in China and the foreign country's.

Objective To observe the clinical, neuropathogical, neurophysiological characteristics of Charcot-Marie-Tooth disease, type 1A (CMT1A) which was similar to chronic inflammatory demyelinating polyradiculoneuropathy(CIDP).Methods The clinical data, neuroelectrophysiological changes and pathological features of sural nerve biopsy were taken from 2 CMT1A patients who were proven to be 17p12 duplication with CIDP features, and analyzed comprehensively. Results Two CMT1A cases with classical chronic course showed both subacute course and clinical manifestations similar to CIDP, however, the changes of neuroelectrophysiology and pathological characteristics of the nerve biopsy in 2 cases were different from CIDP in some way. We confirmed the chronic inflammatory demyelinating type of the CMT1A patients whom the immunotherapy was effective on.Conclusion The classical CMT1A 17p12 duplication patients who obtained immunotherapy effects might resemble CIDP both in clinical course and manifestation.

Objective To establish osteosarcoma vaccine by the LM9 osteosarcoma derived from C3h mice hybridized with activated B lymphocytes and study its biological behavior and the antitumor efficacy. Methods The LM9 osteosarcoma derived from C3h mice was fused with LPS activated B lymphocytes by using 50%PEG. The fused cells was selected by HAT medium and cultured in vitro, and the biocharacter and efficacy of the fusion vaccine were investigated. Results In contrast to LM8, the fused cells grew significantly slowly in vitro. All the mice under the protection of fused vaccine survived without tumor (8/8), while all the mice in the control group succumbed to the tumor with no survival (8/8), 75%of the mice inoculated subcutaneously with cell fusion vaccine survived without tumor burden after implantation of LM8 cells subcutaneously. The mice in the control group developed tumors and died within 45 days without any exception. Conclusion It is possible that the LM9 osteosarcoma biology characteristics change after fused with LPS activated B lymphocytes. Cell fusion osteosarcoma vaccine could produce prophylactic and therapeutic effects in mice.

One of the important approaches for further prolonging remission duration and eradicating minimal residual disease in acute leukemia is immunotherapy. Four kinds of immunotherapy for acute leukemia are under investigation: (1) monoclonal antibodies, among them, Mylotarg (cytotoxic antibiotic calicheamicin linked to CD33 Mab) is given for the treatment of refractory or relapsed acute myeloid leukemia and molecular relapse in acute promyelocytic leukemia with good results, Campath-1H (antiCD52 Mab) is administered in the treatment of prolymphocytic leukemia and Rituximab (anti-CD20 Mab) in B-PLL with high complete remission rates. Other Mabs under preclinical and clinical trials include anti-IL-2 receptor Mab for the treatment of acute T lymphocytic leukemia, anti-220 kD Mab-6G7 for acute leukemias, recombinant immune toxin BL22 (anti-CD22) for hairy cell leukemia and Mabs labeled with radio-isotopes for different types of acute leukemias; (2) adoptive cellular immunotherapy using cytokine-induced killer cell, alloreactive NK cells, allogeneic or autologous leukemic-specific CD8(+) cytotoxic T lymphocytes, and other immune effector cells; (3) cytokines and other immune modulators comprising IL-2, IL-12, GM-CSF, CD40L, FLT-3L and thalidomide and its derivatives; (4) leukemia vaccines of several different formulations including antigen-specific, leukemia cell-based, leukemia antigen-pulsed dendritic cell (DC) and leukemia-derived DC vaccines, the latter two formulations are more attractive. In conclusion, up to now, the most effective example of immunotherapy in acute leukemia is provided by the administration of Mabs, and the majority of other approaches in immunotherapy for acute leukemia although promising, need further studies.
Acute Disease ; Adoptive Transfer ; methods ; Antibodies, Monoclonal ; immunology ; therapeutic use ; Cancer Vaccines ; therapeutic use ; Humans ; Immunotherapy ; methods ; trends ; Leukemia ; immunology ; therapy

Clinical Medicine ; Comprehensive Health Care ; organization & administration ; standards ; Decision Making, Computer-Assisted ; Evaluation Studies as Topic ; Humans ; Models, Theoretical ; Outcome Assessment, Health Care ; methods ; Quality Assurance, Health Care ; methods ; Research Design

Objective To evaluate the therapeutic efficacy of laparoscopic splenectomy (LS) for patients with idiopathic thrombocytopenic purpura (ITP) and to investigate the change of parameters of platelets.Methods Twenty-one patients with ITP after LS were studied, including the following paramenters: the operation time, intraoperative blood loss and postoperative complications, and compared perioperative platelet count(PC), packed platelet volume(PPV), mean platelet volume(MPV), and platelet distribution width (PDW) with the postoperative results.Results The mean operation time was 1.5 h. Intraoperative mean blood loss was 60 mL, postoperative hospitalization time was 5 d and with no case of delayed healing of incision. Accessory spleen was found in 19 % of patients . The incidence of complication was 4.8 %, and with no deaths. Platelet count and packed platelet volume increased with fluctuation, but mean platelet volume and platelet distribution width decreased with fluctuation. The parameters were in multipoint dynamic equilibrium with fluctuation and coordinated restoration. All patients were followed-up. No case had recurrence at 1.5~5.5 y, and platelet-associated antibody was in normal range. Bone marrow examination was normal.Conclusions The treatment of ITP with LS is safe and effective. The selection of therapeutic plan should depend on the changes of platelet parameters.

In an attempt to overcome the limitations of titanium in dental and orthopaedic clinical applications, a new method has been developed to prepare calcium carbonate coatings on sandblasted and acid-etched (SA) titanium implants. The purpose of this study was to investigate the effect of calcium carbonate-SA (CC-SA) implants on osseointegration in vivo. The surfaces of SA and CC-SA implants were characterised for surface morphology and surface chemistry. Subsequently, these two kinds of implants were implanted in the femoral condyles of rabbits. The implants were retrieved and prepared for histological and histomorphometric evaluation 1, 2, 4, 8 and 12 weeks after implantation. Significantly higher values of bone-to-implant contact of the entire implant except the gap area (BIC_ALL) and the bone-to-implant contact of the gap area (BIC_GAP) were found in animals with the CC-SA implants than in those with the SA implants at 4 weeks. Higher values of total gap bone were found in those with the CC-SA implants than in those with the SA implants at 1, 2 and 4 weeks. In conclusion, the current findings demonstrate that the calcium carbonate coating can improve and accelerate the early ingrowth of bone and osseointegration at the early healing phase. This may reduce clinical healing times and thus improve implant success rates.

Objective:To prepare and purify siRNA targeting a proliferation-inducing ligand targeted(APRIL-siRNA),so as to provxde a basis for studying the role of APRIL in human pancreatic cancer.Methods:pET-22b-APRIL was constructed to express APRIL dsRNA of human pancreatic cancer cell line CFPAC-1 in E.coli and the product was purified by chromatography using CF-11 column.APRIL dsRNA was digested by RNaseⅢto prepare APRIL siRNA,then the reaction mixture was loaded onto a DEAE ion exchange chromatography to remove RNaseⅢfrom oligonucleotides,and size exclusion chromatography was used to purify 21 bp siRNA.The purified APRIL siRNA was used to transfect Chinese hamster ovary(CHO)cells and the expression of APRIL in CHO cells was observed under fluorescence microscope Results:APRIL dsRNA was successfully expressed in E.coli after IPTG induction and was purified by CF-11 column.dsRNA was hydrolyzed with RNaseⅢand was purified by DEAE ion exchange chromatography and size exclusion chromatography.15% nondenaturing PAGE and 12% SDS- PAGE confirmed that RNaseⅢwas removed from oligonucleotides and 21 bp siRNA was purified with size exclusion chromatography.It was also found that APRIL siRNA obviously depressed APRIL expression in CHO cells.Conclusion:We have successfully constructed APRIL siRNA targeting APRIL gene of CFPAC-1 cells with in vitro transcription,which provides a basis for knock-down of APRIL gene in CFPAC-1 cells.

Objective To study the appearance of magnetic resonance imaging (MRI) in early stages of cartilage degeneration and to detect its values.Methods Intra articular injection of 5 units of papain causing a reversible loss of cartilage proteoglycan in the New Zealand rabbit knees.Rabbits were scanned with magnetic resonance imaging,using a 0 3 T Hitachi magnet with 16 cm coil.Gradient echo sequences and spin echo sequences were performed in the sagittal planes at 0,24,48 and 72 hours after intra injection of papain.Then signal intensity and thickness of cartilage were measured.The proteoglycan content was measured biochemically and histochemically.Results The cartilage thickness and signal intensity decreased significantly in treated knees compared with control knees at 24 and 48 hours ( P 0 05) after injection of papain.These changes on magenetic resonance (MR) images were consistent with the changes of proteoglycan concentration measured by biochemical analysis and histochemical staining of cartilage.Conclusion It is possible for MRI to detect the early stages of cartilage degeneration.

Objective To investigate the neuropathic pain (NP) accompanying spinal cord injury (SCI),and to analyze the related factors to provide references for its prevention and treatment.Methods Seventy SCI patients with NP were selected using the DN4 scale.Their age,gender,occupation,education level,monthly income,injury position,marital status and other data were surveyed using a general questionnaire.Their NP situation was surveyed using a simplified McGill pain questionnaire (SF-MPQ).Results The patients' average visual analogous scale (VAS) score was 4.37.Their average pain rating index (PRI) according to the SF-MPQ was 8.23,with the PRI-sensory and PRI-emotional components 5.23 and 3.00 respectively.The average degree of present pain intensity was 1.86,between mild pain and discomfort,and discomfort was the description most commonly used.The most common pain descriptor was prickling pain,followed by burning pain and bulge pain.85.7％ of the patients felt that their pain had an adverse effect on their affective state,and exhaustion occurred more often than any other descriptive words.Univariant analysis showed that the degree of injury,education level,marital status,monthly income,family support and medication history were all factors correlated with NP perceptions.Multi-variate logistic regression analysis showed that being unmarried and severity of injury were independent protective factors against NP.No family support,no medication and low income were independent risk factors for NP.Conclusion The type of neuropathic pain varies in patients with spinal cord injury.The intensity of the pain is mostly at a medium level.The emotional state of most patients was affected.Neuropathic pain involves many factors.Being unmarried and severely injured are independent protective factors,while lack of family support,no medication,and having low income were independent risk factors.