0.05 ).But the difference of positive ratio between 1-year-old group was significant in 6 cases of B19 DNA positive (P0.05).Conclusion There are no markedly association between kawasaki disease and human parvovirus B19 infection.

Objective To analyze the causes for failed treatments of proximal femoral fractures and to evaluate the curative results of total hip replacement(THR)to salvage the failures.Methods A retrospective study was conducted for 23 consecutive cases of THR to salvage failed treatments of proximal femoral fractures from February 2002 to April 2005.There were 17 cases of femoral neck fracture,five cases of intertrochanteric frac- ture,and one case of femoral head fracture.Results Inadequate reduction after inadequate fixation,incorrect materials or technical errors in internal fixation were the most significant reasons for the failure of early treatment. Twenty-one of the 23 patients were available for fullow-up that ranged from 8 to 46 months(mean,32 months). No such complications as wound infection,hip dislocation,prosthesis breakage or deep venous thrombosis were found.Their mean Harris score increased from 48.3 preoperatively to 87.6 postoperatively.Condusions Re- duction,internal fixation,and fixation technique are very important to treatments of proximal femoral fractures. High energy trauma in young patients and osteoporosis in old patients make treatment of proximal femoral fractures even more difficult.THR is a satisfactory and safe way to salvage a failed treatment of proximal femoral fracture.

Objective To investigate the effect of growth differentiation factor 5(GDF-5)on expression of gap junctional protein,connexin 43,during ehondrogenic differentiation of bone marrow sternal cells(BMSCs)in vitro.Methods BMSCs were isolated from mouse bone marrow and cultured in vitro.The cells in passage 3 were chosen to be induced into chondrogenic differentiation.After induction for 72 hours,TypeⅡcollagen protein was examined by immunocytochemistry and the sulfate glycosaminoglycan was measured by Alcian blue staining.With induction for 24,48 and 72 hours,the proliferation effects of BMSCs were investigated by MTT assay;connexin 43 mRNA and protein were examined by RT-PCR,western blotting and immunocytochemistry respectively at different time points during induction.Results According to MTT assay,GDF-5 had no effect on the proliferation of BMSCs at different time points of induction;RT-PCR,western blotting and immunocytochemistry showed that GDF-5 could promote expressions of connexin 43 mRNA and protein at different times during induction.After 72 hours of induction,immunocytochemistry showed expression of TypeⅡcollagen protein,and AIcian blue staining of proteo- glycan revealed deposition of typical cartilage extracellular matrix.Conclusion GDF-5 can enhance chondrogenic differentiation of mouse BMSCs in vitro by up-regulating the expression of gap junctional protein,connexin 43.

Conjunctiva ; surgery ; Diagnosis, Differential ; Eye Neoplasms ; metabolism ; pathology ; surgery ; Humans ; Infant ; Male ; Neoplasm Recurrence, Local ; Nerve Sheath Neoplasms ; metabolism ; pathology ; surgery ; Reoperation ; S100 Proteins ; metabolism

AIM:To investigate the apoptotic pathway of MCF-7 breast cancer induced by the grub extract in vitro.METHODS:MTT assay was used to determine the effect of the grub extract on proliferation of MCF-7 human breast cancer cell line and cell toxicity.Morphological changes of the apoptosis in cancer cells were observed by HE staining through invert microscope,light microscope,AO/EB double fluorescent staining under fluorescent microscope.FCM was used to assay the change of apoptotic rate.The expression of Bcl-2,Fas,caspase-9,caspase-3 in apoptotic pathway was detected with immunocytochemical method before and after exposure to the grub extract,and the effect of that on apoptotic pathway was explored.RESULTS:(1)The MTT test showed that the growth of MCF-7 human breast cancer cell line was significantly inhibited by the grub extract in dose and time dependent manners.The inhibitory rate in exposure group was significantly different from that in control group(P

Objective To investigate effects of different doses of recombinant human bone morphogenetic protein-2 (rhBMP-2) on vascular endothelial growth factor (VEGF) expression in fetal mouse osteoblasts.Methods Calvaria osteoblasts of fetal mice of 19 days were cultured.The effects of rhBMP-2 at different doses and different action times on VEGF expression patterns in fetal mouse osteoblasts were observed with reverse transcrip- tion-polymerase chain reaction (RT-PCR) and Western blot staining.Results In the present study,RT-PCR detected a steady expression of VEGF mRNA in the control fetal mouse osteoblasts.The levels of VEGF mRNA increased in an apparent biphasic manner with a maximum stimulation (about 2-fold above the control,P＜0.05 ) in both VEGF mRNA species observed at 300 ng/mL of rbBMP-2.After 48 h of rhBMP-2 treatment,the VEGF mRNA levels approached those in the control.The VEGF mRNA levels appeared to be biphasic in rhBMP-2-treated cultures,showing peak induction at 3 and 24 h and remaining elevated at 48 b.Compared with the individual control value at each time point,an apparent maximum increase (about 2.5-fold above the control,P＜0.05) occurred at 6 h.The second peak induction,about 2-fold above that in the control,occurred at about 36 h.Conclusions The expression of VEGF mRNA is steady in the control fetal mouse osteoblasts.RhBMP-2 can promote the expression of VEGF in dose-dependent and time-dependent manners.

Group A,the differences among the three groups were statistically significant(P0.05). TCR,CCR,DAP,OD,BRC in Groups B and C showed trends of increasing,the differences in terms of the contents of BMP-RⅠamong the 3 phases were statistically significant(P0.05);the ER in Group B and C showed a trend of decreasing,thee difference between 4- and 8-week and 4- and 12-week were signifieantly dif- ferent(P0.05).Conclusion After application of glucocorticoid for a short term,pathological changes maintained and showed trends of inereasing in early stage.HBO can reverse these changes.The outcome of 3-course HBO therapy is better than that of 1-course therapy.

Abstract: Objective　To detect the antibody levels of hantavirus in serum samples from patients suspected with hemorrhagic fever with renal syndrome (HFRS) in Heilongjiang Province from 2019 to 2021, and to provide scientific basis for the prevention and control of disease. Methods　Enzyme-linked immunosorbent assays (ELISA) were used to detect the IgM antibodies to hantavirus in serum samples collected from suspected patients with HFRS in the acute-phase, and IgM and IgG antibody in convalescent-phase serum samples. The positive rate of IgM antibody in acute-phase serum samples of patients in different years was analyzed with χ2 test by SPSS 19.0, and the data were sorted out and analyzed about patients' gender, occupation, age, date of onset and interval from onset to initial diagnosis by EpiData 3.1, Excel 2003 software. Results　A total of 351 acute-phase serum samples and 208 convalescent-phase serum samples were detected in patients suspected with HFRS, respectively. There were 317 positive IgM antibodies of serum samples in the acute stage, with the positive rate of 90.31%. There was no significant difference in the positive rate of IgM antibodies in the acute stage between different years (χ2=0.895, P=0.639). T The IgM antibodies and IgG antibodies were positive in 32 (15.39%) and 28 (13.46%) of the convalescent-phase serum samples, respectively. Moreover, 148 patients (71.15%) were double-positive for IgM and IgG antibodies at the convalescent stage. The ratio of male to female patients was 4.56∶1, for which male patients were much more than female patients. Occupation was dominated by farmers (253 cases, 79.81%), followed by workers (19 cases, 5.99%) and the unemployed (17 cases, 5.36%), respectively. The age of patients ranged from 10 to 88 years old, with a median age of 49 years old. Most of the patients were in the age group from 30 years old to 60 years old (209 cases, 65.93%), among which the age group from 40 years old to 50 years old (86 cases, 27.13%) had the highest proportion, and the age group from 60 years old to 90 years old had a proportion of 20.18% (19 cases). May and November were the peak periods of HFRS in Heilongjiang Province. The median interval between onset and initial diagnosis was 4 days. Conclusions　There is a gap of about 10% between the clinical diagnosis of HFRS cases and the confirmed cases detected by laboratory in Heilongjiang Province from 2019 to 2021. The virus-specific detection results are important for confirming the diagnosis of local patients with HFRS.

OBJECTIVETo observe effects of treatment from the lung and treatment from the intestine on the level of vasoactive intestinal peptide (VIP) in the lung and intestine of ulcerative colitis (UC) rats.

METHODSThe UC rat model was established in 52 rats by using rabbit intestine mucosa tissue allergen combined TNBS-ethanol model (with the model successful rate of 78.0%). Eight rats randomly selected from 40 successfully modeled rats and 8 of 16 rats from the normal group were recruited as the model group and the normal control group before intervention (at week 0). The rest 32 successfully modeled rats were randomly divided into the model group, the Western medicine treatment group (salazosulfapyridine), the treatment from lung group (Huangqi Jiegeng Decoction), and the treatment from intestine group (Huangqi Huanglian Decoction), 8 in each group. Rats in each treatment group were administered with corresponding medication 8 times the dose of a 60 kg adult human. Another 8 normal rats were recruited as the normal group. Equal volume of pure water was given to rats in the model group and the normal group by gastrog avage, once per day. Contents of VIP in the lung tissue and the intestinal tissue were detected at week 0 and 4 after 4-week consecutive intervention. Pathomorphological changes of the lung tissue and the colon tissue were observed under light microscope.

RESULTSCompared with the normal control group at week 0, evenly distributed diffuse inflammation could be seen in the pulmonary interstitial tissue; the bronchial wall was thickened; a huge amount of infiltration surrounded bronchi and blood vessels; a large area of necrosis of intestinal mucosa and inflammatory cell infiltration could also be seen in the model group. Pathological injuries of the lung and the colon were more alleviated in each treatment group than in the model group at the same time point. Compared with the normal control group at the same time point, VIP contents in the lung tissue significantly decreased in the model group at the end of week 4 (P<0.05); VIP contents in the colon tissue significantly increased in the model group at the end of week 0 and 4 (P <0.05). Compared with the model group, VIP contents in the lung tissue significantly increased in the Western medicine treatment group and the treatment from lung group at the end of week 4 (P<0.01); VIP contents in the colon tissue significantly decreased in the treatment from lung group and the treatment from intestine group (P<0.05, P<0.01).

CONCLUSIONTreatment from the lung and treatment from the intestine showed predominant advantage in improving local inflammation of the lung and the intestinal tract, alleviating pathological injuries, promoting repair of injuries through regulating VIP contents in the lung tissue and the colon tissue.

Animals ; Colitis, Ulcerative ; drug therapy ; Drugs, Chinese Herbal ; therapeutic use ; Intestinal Mucosa ; metabolism ; Intestines ; Lung ; Male ; Rabbits ; Rats ; Vasoactive Intestinal Peptide

Actins ; metabolism ; Antigens, CD ; metabolism ; Antigens, Differentiation, Myelomonocytic ; metabolism ; Diagnosis, Differential ; Female ; Humans ; Kidney Neoplasms ; pathology ; Middle Aged ; Pulmonary Artery ; Pulmonary Embolism ; pathology ; Radiography ; Sarcoma ; diagnostic imaging ; metabolism ; pathology ; surgery ; Vascular Neoplasms ; diagnostic imaging ; metabolism ; pathology ; surgery ; Vimentin ; metabolism