Objective To quantitatively evaluate relative contribution of medical history,physical examination and laboratory investigation to diagnoses for medical outpatients.Methods In total,145 medical visitors to the outpatient department of Peking Union Medical College Hospital (PUMCH) during October 10 to 16,2008 were recruited and followed-up for 12 months.Results Nineteen of 145 visitors (13.1%) were lost during the period of follow-up and diagnoses were established for 86 of them (68.3%)finally with medical history and for 20 (15.9%) with physical examination or laboratory investigation,respectively.Confidence index of internists in their correct diagnosis increased to 7.3 with medical history and to 7.9 and 8.7 with physical examination and laboratory investigation in average,respectively.Conclusions Most visitors to internal medicine department could be diagnosed correctly with medical history only.On the basis of physical diagnosis,selection of adequate laboratory investigation for them is critical to improvement of clinical diagnosis.

Objective To study the effect and mechanism of taspine on wound healing and fibroblast proliferation. Methods The effect of taspine on skin wound was observed in vivo. The different concentration of taspine hydrochloride was added to L929 fibroblast cultivated in vitro, and lactate dehydrogenase was detected and MTT method was applied to observe effect of taspine on fibroblast proliferation. Results The local application of taspine 3 mg/Ml and 1.5 mg/mL accelerated the healing of skin wounded. In vitro, 0.01～0.5 μg/mL of taspine hydrochloride showed no effect on the change of lactate dehydrogenase activity and fibroblast proliferation. Conclusion Taspine is a kind of active alkaloid from leontice robustum which can enhance wound healing, its mechanism on wound healing is not by means of accelerating the proliferation of fibroblast, other mechanisms are necessary for being further studied.

Poly-?-hydroxybutyric acid (PHB) produ c ing strain NS-82# which was isolated from the soil was identified to be Bacillus sp.The purified sample from fermentation was similar to t he standard sample produced by Aldric Chemical Company Inc after determinated wi th ultraviolet absorption,IR-absorption,gas chromatographiyc and nuclea r magnetic resonance analysis of polyesters.

[ ABSTRACT] AIM:To observe the treatment effect and its immune regulation of human amnion epithelial cells ( hAECs) on Alzheimer’ s disease ( AD)-like pathology rat model.METHODS: The hAECs were isolated from amnion with trypsin digestion, and the phenotype of hAECs was analyzed by flow cytometry.SD rats ( n=48) were randomly divid-ed into sham control group, model group, medium group and hAECs group.AD-like pathology rat model was induced by bilateral intraventricular injection of lipopolysaccharide (LPS).hAECs (5 ×105) were injected into the hippocampus of the AD-like pathology rats.At 2 weeks after transplantation, the animals were tested by Morris water maze to observe the function of learning and memory.The pathological change of the brain was observed by HE staining.The expression of am-yloid β-protein 42 (Aβ42) and Tau protein and the level of acetylcholine (ACh) in the injury brain were determined by immunohistochemistry.The survival and differentiation of hAECs in the hippocampus were measured by immunofluorescent technique.The percentages of lymphocyte subsets in the peripheral blood mononuclear cells were analyzed by flow cytome-try.The contents of serum cytokines were detected by cytometric bead array.RESULTS:Compared with model group and medium group, hAECs group showed shortened escape latency ( P<0.01) , increased frequency of going through the plat-form (P<0.05), reduced loss of hippocampal neurons, decreased expression of Tau protein and Aβ42 in the hippocampus (P<0.05), increased ACh level in the hippocampus (P<0.05), decreased percentages of Th1 and Th17 subsets, in-creased percentages of Th2 and Treg cells ( P<0.05) , decreased concentrations of IFN-γand IL-2 in the serum, and in-creased concentration of IL-4 ( P<0.05 ) .CONCLUSION: hAECs improve the cognitive learning and memory function and alleviate pathologic damage of hippocampus through immune regulation in AD-like pathology rats.

Background and purpose:Few reports demonstrate the relation between the expression of RIZ1 which has been found to be a tumor suppressor gene recently and leukemia. This study investigated the effect of RIZ1 expression on the apoptosis of human myeloid leukemic cell lines. Methods:The expression of RIZ1 mRNA was observed in human myeloid leukemic cell lines AML193, KG-1, KG-1a, K562 and Ery-1 by reverse transcription polymerase chain reaction assay. RIZ1 was forced to express in the expression-lacking cell lines by transfecting pRIZ1 RH containing full length of RIZ1 cDNA to the cell lines. As controls, the cell lines were transfected with pcDNA3.1. The apoptotic cells were determined by using the annexin V/propidium iodide stain 24 h after transfection.Results:Among the 5 cell lines, no expression of RIZ1 mRNA had been detected in AML193 and low expression in K562. The forced expression could be found in both cell lines 24 h after transfection of pRIZ1 RH, accompanied by obviously increased apoptotic rates which were (22.7? 0.7)% in AML193 and (28.6?1.2)% in K562 compared to controls (11.7%?1.6% and 9.0%?0.8%, respectively) (P

Objective:To investigate the expression of cyclooxygenase-2 in primary hepatocellular carcinoma, in cancer surrounding tissues and normal liver tissue and its relationship with clinical pathological features.Methods:The expression of COX-2 was detected in 30 cases of hepatocellular carcinoma, 20 cases of cancer surrounding tissue and 10 normal liver tissue by flow cytometry (FCM) and immunohistochemistry (SP). The clinical data were analyzed retrospectively.Results:(1)The expression of COX-2 in the HCC tissue was significantly higher than in cancer surrounding tissues and normal liver tissue (P0.05).Conclusion:The hyperexpression of COX-2 in tissue can reflex the biological behavior of HCC,and have very important role in the development of HCC.The specificness of COX-2 protein expression make it to be new target of tumor diagnosis and treatment.These results provide a theoretical basis for the chemoprevention of hepatoma.

Objective To study the treatment of neonate-infants after open-heart surgery during perioperafive period.Methods The clinical data of 1619 neonate-infants during perioperative period were analyzed.Results 68 cases died,mortality 4.2%.Postoperative complication 190 cases(11.7%).Conclusion The management of components and quantities of the infusion,admistration of cardiovascular drugs,the management of respiratory tracts and the protection of heart function,ale main points of perioperafive therapy of neonate-infants after open-heart surgery.

Adolescent ; Child, Preschool ; Female ; Humans ; Lymphangiectasis, Intestinal ; Male