China ; Diabetes, Gestational ; diagnosis ; diet therapy ; Female ; Humans ; Pregnancy

Adult ; Cholesteatoma ; congenital ; Female ; Humans ; Temporal Bone

BACKGROUND: Utilizing tissue engineering technique, various gel systems are served as scaffolds to repair bone defect. The scaffolds should have features of nontoxic and no teratological effects to the body. OBJECTIVE: To observe the effect of sodium alginate-gelatin/osteoblast gel on chromosomal pattern aberration in rabbits. DESIGN, TIME AND SETTING: The in vivo material animal experiments were conducted at the Beijing Shijitan Hospital and Department of Histology and Embryology, Peking University Health Science Center from October 2007 to March 2008. MATERIALS: A total of 12 New Zealand rabbits, aged 2 months, with clean grade, were randomly divided into 2 groups. The experimental group contains 4 female and 4 male rabbits, and the remaining 4 females were served as the control group. Sodium alginate dried powder were purchased from Sigma, USA, and the gelatin dried powder were supplied by Liidao Company, Hebei, China. METHODS: Following numbering, bone marrow was collected from 12 rabbits. Bone marrow stromal stem cells (BMSCs) were isolated by the density gradient centrifugation, and then in vitro cultured with osteoblast inductor. Osteoblasts following passage were an order of magnitude of 10~7. Bright pink gelatiniform liquid with mass ratio of sodium alginate and gelatin at ratio of 2:3 was prepared. Rabbit osteoblasts with final concentration of 5×10~9/L were mixed with CaCb solution to form fruit jelly-shaped sodium alginate-gelatin/osteoblast gel. Critical-sized calvarial defects were created in diameter of 1.5 cm in 12 rabbits. After 1 week, cell/scaffold complex (0.5 mL) was implanted to repair the bone defect in the experimental group. There was no treatment in the control group. MAIN OUTCOME MEASURES: The change of chromosomal pattern was observed at 3 months following reparation. RESULTS: No Chromosome somatotype aberration was found in 100 metaphases in the experimental group. From 400 metaphases of the control group, 4 abnormal cells were found, with 1% chromatid-type aberration ratio. Meantime, 12 abnormal cells in 800 metaphases of the control group were found, with 1.5% chromatid-type aberration ratio. The numerical value was within the normal range. Chromosome karyotype analysis: the chromosome number of each experimental rabbit was 2n=44, karyotype of the control rabbit was 44, XX, which was normal female; or 44, XY, normal male, no abnormal was found. The female rabbit in the experiment group was 44, XX, no abnormal was seen. CONCLUSION: From the cytogenetoxicity point of view, sodium alginate-gelatin/osteoblast gel is safe in repairing bone defects.

Objective To investigate the distribution of characteristics,clinical manifestations,laboratory parameters and activity index of patients with systemic lupus erythematosus (SLE) and to determine their role in helping to make correct clinical diagnosis and disease the activity evaluation of SLE.Methods Collect the data of 1037 SLE patients of Ningxia Medical University Affiliated Hospital from January 2006 to June 2010.Data were analyzed with t test and Chi-square test.Results Over the past three years,there were more and more patients were admitted year by year.Among the 1037 cases of SLE patients,most of them 20-40 year-old woman,accounting for 67.5％ of the whole patient population,with a male to female ratio was 1:8.26.Joint pain was the most common initial symptom,accounting for 54.3％,followed by skin rash,accounting for 48.2％.Decreased complement C3 level and platelets counts, proteinuria,and positive anti-dsDNA antibody could be used as indicators for early diagnosis of SLE.SLEDAI activity score higher than 9 were presented in 26.0％ of patients.Factors that could impact the final score of SLEADI were fever,arthritis,skin rash,proteinuria,low complement levels,high titers of anti-dsDNA antibody,pleurisy,alopecia,mucosal ulcers,pericarditis,mental illness and decreased platelets count.Patients with active disease had a higher accidence of fever,arthritis,skin rash,lung damage,alopecia,mucosal ulcers,heart damage,mental illness and renal damaged,low complement levels,high level of anti-dsDNA antibody titers and elevated erythrocyte sedimentation rate.Conclusion SLE is a multi-system disease with multiple organ involvement,with characteristic clinical symptoms and immunological abnormalities,thus early diagnosis is very important.Understanding the characteristics of the diseases,correct judgement of the disease activity,reasonable and effective treatment all can delay the development of organ damage and improve the prognosis.

Objective ThrouGh the detection of heat shock protein 90(HSP90)Gene expression in the peripheral blood in in patients with hypertensive disorders complicatinG preGnancy( HDCP ),to understand its role in the pathophysioloGy of HDCP. Methods The expression of HSP90 was observed in Groups of normal preGnant women,Gestational hypertension patients,mild preeclampsia patients,severe preeclampsia patients by ELISA. Results The expression of HSP90 in peripheral blood of Gestational hypertension Group,mild preeclampsia Group,severe preeclampsia Group were siGnificantly hiGher than normal preGnant Group( P<0. 0l ) . Conclusion HSP90 may have close relationship with the onset and development of HDCP. It can predict HDCP by detectinG the level of HSP90 in peripheral blood.

OBJECTIVETo investigate the mechanism that the formulas for activating blood and resolving stasis can regulate hemopoietic stem cell to produce new blood.

METHODRats were established animal model of acute cerebral infarction by referencing Olivette' method. They were randomly divided into model group, the group of the high, middle, low dose of the formulas for activating blood and resolving stasis. Each group and then wasrandomly divided into subgroups by 1, 3, 7, 14, 28 d. Xuesaitong capsule was formulated into 20, 40, 60 g x L(-1) with normal saline. The rats were given gavage drugs once a day until the experient ended, and the model group was administrated by intragastrical perfusion of normal saline. ELISA was used to detect the expression of SCF in peripheral blood and bone marrow among different groups at different time points. Flow cytometry was used to observe the changes of CD117 in blood and bone marrow.

RESULTThe CD117+ HSC and SCF concentration in peripheral blood and bone marrow of model group were increasing during 1-14 d,there was a peak on the 14th day, then the expression was reducing. CD117+ HSC and SCF concentration rising trend in the group of the high, middle dose of the formulas for activating blood and resolving stasis was preceded model group (P < 0.05).

CONCLUSIONActivating blood and resolving stasis can regulate hemopoietic stem cell to produce new blood, and it is through the regulation of CD117+ HSC number to achieve the purpose.

Animals ; Bone Marrow Cells ; drug effects ; metabolism ; Capsules ; Cerebral Infarction ; blood ; drug therapy ; genetics ; metabolism ; Chemistry, Pharmaceutical ; Drugs, Chinese Herbal ; administration & dosage ; Hematopoietic Stem Cells ; drug effects ; metabolism ; Humans ; Male ; Proto-Oncogene Proteins c-kit ; genetics ; metabolism ; Rats ; Rats, Sprague-Dawley ; Stem Cell Factor ; genetics ; metabolism

Objective To demonstrate the value of eombined application of prenatal ultrasonography with fetal magnetic resonance imaging(MRI) in the diagnosis of monochorionic muhifetal realformations. Methods Fourteen cases of muhifetal malformations,detected by prenatal ultrasonography,received MRI within 48 h afterwards.All diagnosis were confirmed after delivery or mid-term termination.All imaging results of the 14 cases were retrospectively reviewed. Results Among the 14 cases,there were 7 acardias,5 Conjoined twins and 2 demise of multifetuses.Comparing ultrasound with MRI,we found that:(1)In cases with acardia and demise of multifetusea,ultrasound could diagnose correctly and be an important tool for follow-up,while MRI could demonstrate organs and structures of the acardiac recipient more clearly and detect the secondary changes of brain in the donor and survived fetus.(2)In Conjoined twins,ultrasound was superior to MRI in demonstrating the structure and function of cardiovascular system : and equivalent to MRI in identifying stomach,kidney,bladder and limbs;but inferior to MRI in identifying esophagus,lung,liver and intestinal,especially in the brain. And MRI could demonstrate two fetuses and the relationship between them in COnjoined twins simultaneously. Conclusions Prenatal ultrasonography and MRI have their own advantages and disadvantages in diagnosing monochorionic multifetal malformations.But the combination of prenatal ultrasonography and fetal MRI may be more valuable.

The gamma-secretase complex mediates the final cleavage of APP to generate the principal component of amyloid plaques in the brains of Alzheimer's disease patients.Four integral membrane proteins (PS,NCT,PEN-2 and APH-1) are essential and sufficient for gamma-secretase activity.To identify the promoter of human nicastrin gene (NCT),its 5' -flanking region has been characterized and a 270 bp fragment containing the TSS (transcription start site) for the promoter activity has been identified.EMSA assays confirmed that all four AP-1 binding sites and two NFAT sites in the NCT promoter region were able to bind relative transcription factors in vitro.Mutations,as well as treatment with PDTC,which adjust the regulatory effect of AP-1 and NFAT,altered NCT promoter activity in both HeLa cells and rat cortical neurons.The results demonstrated that AP-1 and NFAT are involved in the regulation of hNCT transcription and suggest that balanced activation of AP-1 and NFAT ensures a strict temporal and tissue-specific control of NCT transcription.

Objective To investigate the loss of heterozygosity at 17 microsatellites of 10 chromosome arms in 68 resected specimens of esophageal cancer, and the relationship to the clinicopathological phenotypes of patients. Methods 68 tumor specimens (20 well-differentiated squamous carcinomas, 30 moderately differentiated carcinomas and 18 poorly differentiated carcinomas) and their matched blood samples were analyzed for LOH at 17 microsatellites by using PCR and fluorescence-based DNA sequencing technology, and the association of LOH with the clinicopathological phenotypes of patients was compared statistically. Results The lowest detection frequency of LOH in our subjects was observed at D8S261 with 33. 3%, and the highest frequency was at D9S125 with 85. 2%. There were 12 markers with the frequency of LOH higher than 50.0%, and 3 markers (D3S1597, D3S1285 and D9S125) with the frequency higher than 75. 0%. There was a significant difference in the frequency of LOH at D9S111 and D13S153 between tumors with different histological grades. LOH at D9S111 was observed in 2 of 12 tumors with well differentiation in 14 of 20 tumors with moderate differentiation, and in 14 of 16 tumors with poor differentiation. LOH at DI3S153 was observed in 2 of 8 tumors with well differentiation, in 12 of 28 tumors with moderate differentiation, and in 11 of 12 tumors with poor differentiation. There was a significant difference in the frequency of LOH at D8S261 between tumors with lymph node metastasis and without lymph node metastasis. LOH at D8S261 was found in 1 of 14 tumors with lymph node metastasis, and in 12 of 22 tumors without lymph node metastasis. Conclusions The widespread and frequent loss of heterozygosity may exist in esophageal cancer, and the candidate genes located in the site of frequent LOH may be involved in the development of this cancer; LOH at D9S11 and D13S153 are more commonly observed in the patients with higher histological grades, the tumors with LOH at D8S261 may have a low tendency to lymph node involvement.

Objective To investigate the factors affecting platelet transfusion efficiency.Methods A total of 102 cases of leuke-mia patients were recruited in the study,whose platelet count were measured before platelet transfusion and 1,24 h after platelet transfusion,then corrected count increment(CCI)values were calculated.By using CCI combined with clinical manifestations,the ef-ficacy of platelet transfusion were evaluated.The platelet antibody were detected before platelet transfusion.Depending on whether there were platelet antibodies,complications,the number of times of platelet transfusion,the types of platelet,patients were grouped and their platelet transfusion efficiency and CCI values were compared.Results The total effective rate of platelet transfusions were 71.6%(73/102 ).Invalid transfusion group had higher platelet antibody positive rate (17.2%)than effective transfusion group (2.7%),the difference were statistically significant(P <0.05).Among the groups of different transfusion times,the tansfusion effi-ciency was statistically different(P <0.05).With the increase of the number of times of platelet transfusion,the platelet transfusion efficiency decreased.Comparison between different types of platelets showed different platelet transfusion efficiency,which was sta-tistically significant(P <0.05).1 h and 24 h CCI value,platelet antibodies and whether patients with complications were related(P<0.05).1 h and 24 h CCI values were both associated with platelet antibodies and complications(P <0.05).Conclusion Platelet antibodies,complications,times of platelet transfusion and types of platelet transfusion are affecting factors of the transfusion effica-cy in patients with leukemia.