Humans ; Infant, Newborn ; Jaundice, Neonatal ; Retrospective Studies

BACKGROUND: Myelination following axonal regeneration is a key factor affecting the recovery of spinal cord injury. Oligodendrocyte survival directly affects the myelination following axonal regeneration. OBJECTIVE: To investigate the feasibility of differentiation of rat bone marrow mesenchymal stem cells (BMSCs) into oligodendrocytes induced by neurotrophic factors. DESIGN, TIME AND SETTING: The cell molecular biology in vitro study was performed at the Laboratory of Department of Orthopaedics, Tongji Hospital from September 2006 to June 2007. MATERIALS: A total of 5 Sprague Dawley rats aged 2-4 weeks, of both gender were selected. Bilateral femur and tibia bone marrow was obtained to harvest BMSCs. METHODS: At passage 4, BMSCs were incubated in serum-free medium, supplemented with N2, 20 ng/mL basic fibroblast growth factor, 20 ng/mL epidermal growth factor for 48 hours, and incubated in medium containing 500 ng/mL insulin-like growth factor I and N2 for 3 days. MAIN OUTCOME MEASURES: Morphological changes were observed using an phase contrast microscope. Semiquantitative RT-PCR was utilized to detect specific marker mRNA expression of oligodendrocytes. Using neuron marker anti-microtubule-associated protein, astrocyte marker anti-glial fibrillary acidic protein, oligodendrocyte marker anti-galactocerebroside, anti-myelin basic protein antibody, immunocytochemical staining was performed to detect the positive rate of the differentiation of BMSCs into oligodendrocytes. RESULTS: Morphological changes in BMSCs during the differentiation into oligodendrocytes: After the induction, a majority of BMSCs presented the morphological characteristics of oligodendrocytes. Cytoplasm retraction towards nucleus, cell process extension towards outwards, and strong refraction were found. With the prolongation of time, several cell processes connected and formed a typical net-shape structure. Specific marker mRNA expression of oligodendrocytes: Following induction, specific strap of myelin basic protein mRNA and galactocerebroside mRNA could be detected. Positive rate of oligodendrocytes: During induction, the positive rates of galactocarebroside, myelin basic protein and microtubule-associated protein were 65%, 45% and 10%, respectively. CONCLUSION: The combination of epidermal growth factor, basic fibroblast growth factor and insulin-like growth factor can effectively promote the directional differentiation of BMSCs into oligodendrocytes.

Background Epidemiological investigation in human has been conclusive. In postmenopausal women,the incidence of cataract is higher than men at the same age. In addition,hormone replacement therapy may protect against the development of cataract. However,this role of androgen is not clear. Objective This study was to explore the effects of estrogen and androgen on anti-oxidative ability of lens after ovariectomy. Methods Fifty-six three-month-old clean female Wistar rats were randomly divided into normal control group,sham operation group, castration group,estrogen eyedrops group;estrogen injection group;androgen eyedrops group;androgen injection group and 8 rats for each. Ovariectomy was performed in the rats of castration group and gonadal hormone application group, and estradiol benzoate solution or testosterone propionate solution were utilized topically or systemly in 5 months after ovariectomy for 6 weeks respectively. Only abdominal cut was curried out in sham operation group. The lenses of rats were examined weekly under the slit lamp. The serum estrogen and androgen levels of rats were detected before,after operation and 6 weeks following the administration of gonadal hormone. The contents of superoxide dismutase( SOD) , glutathione( GSH) ,malondialdehyde( MDA) and water-soluble protein ( WSP) in rat lens homogenate were detected at the end of the experiment. Utilization of animals complied with the Regulation for the Administration of Affair Concerning Experimental Animals by State Science and Technology Commission. Results No opacity of lenses was found during the experiment duration in various groups. The serum estradiol levels of rats in sham group were insignificantly different from normal groups in various time points( P>0. 05). The evident decline of serum estradiol was detected in the rats of castration group and gonadal hormone application groups compared with sham group in 5 months after operation( all P<0. 01). However,at the sixth weeks after the system use of estradiol or testosterone,the serum estradiol levels were significantly higher than the castration group and topical application groups of gonadal hormone(P<0. 01). The contents of SOD,GSH and WSP in lenses were considerably increased,but the MDA level in lenses was decreased after system use of estrogen ( P<0. 01). The activity of SOD and GSH were lower after system use of testosterone in comparison with castration rats ( P < 0. 05 ). Conclusion Estrogen can protect lens against oxidation damage. However, androgen, to a certain extent, may contribute to the development of oxidative damage in OVX female rats.

Objective To explore the effect of the midwife-leading labor pain management model on the pregnancy outcomes and pain control satisfaction.Methods The randomized grouping and single blind trial design were performed.One hundred and ten pregnant women were recruited and randomized into the control group (n=55) and intervention group (n=55).The control group received the routine prenatal examination by the outpatientdepartment obstetric doctors and intrapartum nursing care during labor.On this basis the intervention group participated in the labor pain educational course in the midwife clinic,and received the repeated pain assessment and pain management intervention during labor.Results There was no statistical difference in the delivery mode between the two groups(P＞0.05).The cesarean section rate without indication in the intervention group was significantly lower than that in the control group,the difference was statistically significant(x2 =6.798,P＜0.05).The average each item score of the labor pain education and pain control satisfaction in the intervention group was significantly higher than that in the control group,the difference was statistically significant(P＜0.01).Conclusion The midwife-leading labor pain management model can reduce the cesarean section rate without indication,and improves the satisfaction of labor pain education and pain control in pregnant women and parturients.

Objective Objective TO investigate the potential association between matrix metalloproteinase-9 (MMP-9) gene polymorphisms and risk of ischemic stroke in Western Guangdong population.Methods This hospitalbased case-control study recruited 251 patients with ischemic stroke and 96 controls.Using Multiplex SNaPshot method was used to detect the genotype of MMP-9 gene rs3787268、rs3918241 and rs3918242 polymorphisms.The association between MMP-9 gene polymorphisms and risk of ischemic stroke was analyzed.Results ① There were significant differences in the genotype distribution of rs3787268 between ischemic stroke group and the controls (P=0.042).In the recessive model,the individual risk of A/A genotype was higher (OR=2.21,P=0.046) than that of the G/G+G/A genotype.② Compared with the controls,the genotype and allele distribution of rs3918242 in the ischemic stroke group were significantly different (P=0.007,P=0.038).In the dominant model,the risk of individuals carrying the T genotype was significantly elevated (OR=2.14,P=0.009) compared with individuals with the C/C genotype.③ The genotype distribution of rs3787268 polymorphisms in the LAA but not in no-LAA subgroup was significantly different from that in the controls (P =0.039).The genotype distribution and allele frequency of rs3918242 polymorphisms in the LAA subgroup were significantly different from that of the control group (P=0.009,P=0.047).There was no significant difference in the genotype distribution and allele frequency between no-LAA subtype and the control group.Conclusions The MMP-9 gene rs3918242 and rs3787268 polymorphisms may be the risk factors of ischemic stroke in Han population in the western part of Guangdong province,China.The MMP-9 gene rs3918242 and rs3787268 polymorphisms may be the risk factors of large-artery atherosclerotic stroke.

ObjectiveTo evaluate the primary effect of granulocyte-monocyte colony stimulating factor (GM-CSF) as an immunotherapy option for treatment of residual disease after alloHSCT.Methods Immunotherapy was performed on two patients with blood malignancy to treat residual disease after allo-HSCT. The patient one,who was diagnosed as having MDS-RAEB Ⅱ,showed bone marrow displasis and incomplete chimerism 6 months after unrelated donor HSCT.Immunosuppressive drug was withdrawn without induction of graft-versus-host disease (GVHD).The patient two B-ALL demonstrated a residual disease at molecular level 30 days post-transplantation.Both of them were given GMCSF (300 μg) subcutaneously once every two days for totally three weeks.During the whole period,skin itch and rash,liver function,subgroups of lymphocytes,and MDSCs and DCs in peripheral blood were investigated.Results In case one,grade Ⅰskin acute GVHD (aGVHD) appeared as early as one week after GM-CSF administration,as well as grade Ⅱ (skin and liver) by the end of the third weeks,and GM-CSF injection was withdrawn.One month later since the start of GM-CSF,the patient showed normal bone marrow morphology and full donor type chimerism. Cyclosporine A (CsA), mycophenolate mofetil and methylprednisolone were administered for two weeks to control GVHD.In the other case,grade Ⅰ aGVHD occurred 9 days after GMCSF administration,and whole blood CsA maintained at 0.134-0.472 μmol/L.Prednisone (30mg per day for 5 days) was used to control grade Ⅱ GVHD from the 11th day after GM-CSF,and grade Ⅰ GVHD continued without any intervention.On the 30th day after GM-CSF treatment,bone marrow aspiration showed complete molecular remission.In both of the two cases,no differences in lymphocytic subtypes were revealed before and after GM-CSF administration,while there were trends of increased DC number and decreased MDSCs in peripheral blood.ConclusionThe administration of GM-CSF as an immunotherapy option for blood malignancy may contribute to the clearance of residual disease after Allo-HSCT.

OBJECTIVETo explore the factors associated with perinatal death of hepatic diseases in pregnancy (HDIP) and make feasible suggestions and measures for perinatal care of high risk patients.

METHODSThe 80 perinatal death cases of hepatic diseases in pregnancy (HDIP) during 1991-2000 in our hospital were analyzed retrospectively.

RESULTSThe perinatal mortality of HDIP in our hospital during the last 10 years was 17.99 approximately 65% was in utero death. Perinatal mortality was different between male (21.64%) and female (10.11%) (P<0.01). Compared first 5 years with last 5 years author found that the perinatal mortality of HDIP had no significant decrease (P>0.05). The perinatal mortality in city and suburbs had decreased, while in the floating population from other provinces the perinatal mortality had increased. The perinatal death was mainly caused by pregnancy induced hypertension (PIH) and asphyxia. But for the HBV carrier mothers the causes of death included umbilical cord problems, premature rupture of membrane and asphyxia.

CONCLUSIONSThe perinatal death mortality was increased by HDIP, deaths were essentially associated with pregnancy induced hypertension and asphyxia and the floating population and male gender were high risks. To enhance the management of HDIP or immigration, take effective therapies of hepatitis and improvement of resuscitation of newborns are critically important.

Adolescent ; Adult ; Cause of Death ; Female ; Fetal Death ; epidemiology ; Fetal Distress ; etiology ; mortality ; Humans ; Infant Mortality ; Infant, Newborn ; Liver Diseases ; complications ; mortality ; Male ; Pre-Eclampsia ; complications ; mortality ; Pregnancy ; Pregnancy Complications ; mortality ; Retrospective Studies ; Sex Factors

Objective To explore the relation between the expression of PBMCs IP-10 mRNA and systemic lupus erythematosus.Methods The expression of PBMCs IP-10 mRNA was investigated by RT-PCR semi quantitative method and samples from 46 patients with SLE,20 patients with RA,11 non-SLE patients with renal impairment and 20 healthy volunteers.Results The expression of PBMCs IP-10 mRNA in active SLE group was significantly higher than that in inactive group(P0.05).Serum levels of IP-10 were highly correlated with the expression levels of PBMCs IP-10 mRNA(r=0.897 1,P

Targeting induced local lesions in genomes (TILLING) is a reverse genetics method for functional genomics research.It is possible to screen for point mutations in the populations of EMS mutagenesis with highthroughput and lowcost. EcoTILLING a method based on TILLING ,was developed for detecting multiple types of polymorphisms in germplasm collections,such as single nucleotide polymorphism,small deletion and insertion etc.Rice is a very important food crop and a model plant for genome research also. There are complete genome sequence and a lot of other bioinformatics resources about it.So the markerassisted breeding is becoming more and more important in rice breeding. Some issues based on TILLING about identifying germplasm based on gene sequence,EMS mutagenesis breeding,developing functional marker in rice breeding in future were discussed.

OBJECTIVETo measure the nasal patency in patients with vasomotor rhinitis (VMR) and healthy controls and to assess its correlation with visual analogue scale (VAS).

METHODSA total of 105 patients with VMR and 71 healthy controls were included in this study. By using nasal rhinomanometry, the pressure-flow curve and got total nasal resistances of 75 Pa and 150 Pa were measured. By means of acoustic rhinometry, the area-distance curve before and after using nasal vasoconstrictor substance was obtained, got the nasal minimum cross-sectional area (MCA), then calculated nasal congestion index (NCI). The outcomes of nasal resistance and acoustic rhinometry in two groups were compared. The correlation between VAS and nasal patency of VMR was evaluated.

RESULTSThe correlation between the outcomes with nasal resistance and acoustic rhinometry and VAS of nasal symptom showed no statistical significance in VMR patients (all P > 0.05). MCA before and after decongestion showed no difference (Z value were -1.541 and -0.626, each P > 0.05), NCI had statistic differences in two groups (Z = -2.707, P < 0.05). Nasal resistance of 75 Pa had statistic differences in two groups (Z = -4.334, P < 0.05), 150 Pa showed no difference (Z = -1.314, P > 0.05).

CONCLUSIONSVasomotor rhinitis is one of the most common non-allergic rhinitis. Subjective symptoms has no correlation with objective nasal patency tests. In clinical practice, comprehensive evaluation of subjective symptoms and objective test results of the patient is required.

Adolescent ; Adult ; Case-Control Studies ; Female ; Humans ; Male ; Middle Aged ; Nose ; physiopathology ; Rhinitis, Vasomotor ; physiopathology ; Rhinometry, Acoustic ; Young Adult