Objective To explore the biological features of hematopoiesis reconstitution by using genetic marking.Methods NeoR gene was transduced into bone marrow(BM)cells of mouse mediated by liposome.Then these cells were transplanted into lethally irradiated recipients.The hematopoiesis reconstitution was observed and the marker gene in spleen and BM cells of recipients after hematopoiesis reconstitution was examined.Results The transplanted recipients remained alive and healthy.But the irradiated mice with no transplantation died from BM aplasia soon.Meanwhile,the cells from spleen and BM of transplanted mice could be alive in G418 system,and contained the DNA fragments of NeoR gene by PCR.Conclusion Gene-modified BM cells could be used to reconstitute hematopoiesis successfully and express the foreign gene to some extent stably.

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Objective:To investigate the correlation between the microsatellite polymorphisms in ob gene 3′flanking region with obesity in Chinese Han ethnicity in Shanghai.Methods: The genotypes of polymorphisms in ob gene 3′flanking region were determined by PCR in 232 Chinese Han subjects(including 130 obese patients and 102 normal controls).The clinical data,including height,weight,waist circumference,hip circumference,body mass index,waist-to hip ratio(WHR),blood glucose,serum insulin,blood lipids,and uric acid,were compared between the 2 groups.Results: No significant difference of genotype frequency(Ⅰ/Ⅰ 0.115,Ⅰ/Ⅱ 0.331,Ⅱ/Ⅱ 0.554 vs Ⅰ/Ⅰ 0.059,Ⅰ/Ⅱ 0.333,Ⅱ/Ⅱ 0.608) and allele frequency(Ⅰ 0.281,Ⅱ 0.719 vs Ⅰ 0.225,Ⅱ 0.775) of ob gene 3′flanking region was observed between the 2 groups.In obese group,patients with Ⅰ+Ⅱ genotype was associated with increased WHR compared with those with Ⅱ/Ⅱ genotype(0.91?0.05 vs 0.86?0.03,P=0.047).Logistic regression analysis showed that WHR was independently correlated with ob gene polymorphisms(P=0.042).Conclusion: Polymorphisms in ob gene 3′ flanking region are correlated with central obesity in obese patients of Chinese Han ethnicity in Shanghai.

0.05). Conclusion: The IQ of children with epilepsy is lower than that of normal children .The epilepsy could impact the intelligence of children.

Objective To investigate the association of Lys656Asn polymorphism in leptin receptor gene with serum triglyceride level.Methods The genotypes of Lys656Asn polymorphism in LepR gene were maped by polymerase chain reaction-single strand conformation polymorphism(PCR-SSCP) assay in 232 unrelated subjects of Shanghai Chinese population.The clinical data were also analyzed.Results No significant difference of genotype frequency of Lys656Asn polymorphism in LepR gene was observed between obese and non-obese groups.In obese group,"G" Allele was associated with increased triglyceride level(1.74?0.91 vs 0.95?0.32)(P

Statin therapy has been shown to play a fundamental role in the treatment of coronary heart disease.Some studies have identified associations between genetic variants and response or toxicity in statin treatment.This review summarizes current knowledge of the pharmacogenomics of statin therapy in order to help to select the best individually adapted statin treatment for patients.

Objective To explore the changes of appendicular skeletal muscle (ASM) in peritoneal dialysis (PD) patients, and to analyze the relationship between ASM changes and dietary intake.Methods One hundred and fourteen PD patients were enrolled in Department of Nephrology, Peking University Third Hospital using convenience sampling.At baseline, and 6 and 12 months after PD, bioelectrical impedance analysis was used to assess the body weight, total muscle mass, and ASM of these patients, and three-day food record was used to assess the dietary intake.Demographics and clinical data were also collected at baseline.Results Compared with baseline, the patients' ASM at 12 months after PD decreased significantly [(19.27 ± 5.59) kg vs.(25.65 ±6.09) kg, P =0.000], the dietary protein intake and energy intake decreased significantly [(0.85 ± 0.21) g/(kg · d) vs.(0.90 ± 0.27) g/(kg · d), P =0.038;(128.37 ± 26.67) kJ/(kg· d)vs.(137.27 ±29.23) kJ/(kg· d), P=0.001].The patients were divided into three groups based on ASM loss, the mean dietary protein intake of the top-loss 1/3 group was statistically lower than that of the bottom-loss 1/3 group [(0.82 ± 0.18) g/(kg · d) vs.(0.91 ± 0.20) g/(kg · d), P =0.021].Conclusions With the continuation of PD, ASM of patients may decrease, which is likely to be mainly related to deficiency in protein and energy intakes.Dietary management should be strengthened in PD patients to alleviate the loss of ASM.

Objective To investigate the effects of rubella virus R16 infection on heat shock protein 70 (HSP70) and heat shock transcription factor 4 (HSF4) in the human embryonic lens epithelial cells in vitro. Methods The human embryonic lens epithelial cells were infected by rubella virus R16 for 3, 7 and 14 days respectively in vitro. Then the mRNA levels of HSP70 and HSF4 were measured by Real-time PCR assays, the HSP70 protein level was detected by Western blot assay, and the DNA sequence of HSF4 was also identified by DNA Sequencing. Results Both mRNA and protein levels of HSP70 were increased dramatically at 3 and 7 days after rubella virus R16 infection in vitro. But mRNA levels of HSF4 were decreased significantly. The DNA sequence of HSF4 had no change in the human embryonic lens epithelial cells at 14 d after rubella virus R16 infection. Conclusions Rubella virus R16 could directly induce the increased expression of HSP70 in the human embryonic lens epithelial cells infected by rubella virus R16 in vitro, which may prevent human embryonic lens epithelial cells from infecting with virus. The heat shock transcription factor may serve as a negative regulator at transcription level. However, the DNA sequence of HSF4 had no change in the human embryonic lens epithelial cells within 14 days after rubella virus R16 infection.

Objective To explore the imaging features and its correlation with pathological findings of giant cell tumor of the ten-don sheath (GCTTS).Methods The clinical data,radiographic images and pathological characteristics of sixteen cases of GCTTS confirmed by pathology were retrospectively reviewed.Plain CT,pre and post-contrast MR were performed in all patients.HE stai-ning was used to investigate the histological characteristics of GCTTS,and immunohistochemistry was employed to detect the ex-pression of CD68.Results There were nine cases of local type GCTTS and seven cases of diffuse type GCTTS in our present study. Nine cases were located in the knee joint,four cases in the foot,and three cases in the hand.Compared with normal skeletal muscle signals,lesions showed isointensity or low intensity on T1 WI and inhomogeneous low intensity on T2 WI.Three cases caused adja-cent bone destruction,one case lead to adjacent bone absorption,and no abnormality was found in other twelve cases.Six cases were injected Gd-DTPA for enhanced scan,in which four cases showed significantly heterogeneous enhancement,one case mild heteroge-neous enhancement,and one case no heterogeneous enhancement.Pathology examination results revealed that GCTTS parenchyma cells were mainly formed by histocyte-like monocytes,and scattered multinuclear giant cells.GCTTS mesenchyme was rich in gelat-inous fiber and hemosiderin pigmentation.Conclusion MR has a significant advantage in detecting specific hemosiderin pigmentation and determining lesions area of GCTTS.Combination of MR with pathology results may improve the diagnosis accuracy.

Objective　To study the mucosa immune responses of gastric and intestinal mucosa in Balb／c mice administered orally with Hp sonicate and mucosal adjuvant（LT）．Methods　The changes of antigen specific AFC in gastric and intestinal mucosa were detected by ELISPOT assay． Results　The numbers of sIgA and IgG AFC rise significantly in PP and gastric mucosa， especially the numbers of sIgA-AFC， significant differences were observed between two immunized groups and the control． Conclusions　Locally synthesized specific sIgA antibodies contribute to immunity against gastric helicobacter infection．