Objective:To observe the changes of visual evoked potential(VEP)in diabetic rats and the influence of nerve growth factor(NGF)and aminoguanidine(AG)on VEP.Methods:Diabetes was induced in adult male Wistar rats with streptozotocin(STZ).Rats were divided into normal control group(CON),diabetes model group(DM).NGF-treated group(D +N)and AG-treated group(D+A).VEP was measured during the 3~(rd)month,6~(th)month,9~(th)month,and 12~(th)month.Results: Compared with the CON group,all rest groups had longer latencies and lower amplitudes(P

OBJECTIVETo explore the role of the basic fibroblast growth factor (bFGF) in the directional differentiation of bone marrow mesenchymal stem cells (BMSCs) into Leydig cells.

METHODSAfter purification and identification, we inoculated the third-generation BMSCs of SD rats onto a six-orifice board and then randomly divided them into groups A (normal saline control), B (human chorionic gonadotropin [hCG] + platelet-derived growth factor [PDGF] induction), C (hCG + PDGF + 5.0 ng/ml bFGF induction), D (hCG + PDGF + 10.0 ng/ml bFGF induction), and E (hCG + PDGF + 20.0 ng/ml bFGF induction). On the 7th, 14th and 21st day of induction, we observed the morphological changes of the cells and measured the level of testosterone (T) and expression of 3 beta hydroxy steroid dehydrogenase (3β-HSD) in the supernatant by immunofluorescence staining.

RESULTSAfter induction, the BMSCs of groups B, C, D, and E exhibited microscopic features of enlarged size, inter-connection, long-shuttle or irregular shape, adherent growth, and large round nuclei, all characteristic of Leydig cells. With the prolonging of time and enhanced concentration of bFGF, gradual increases were observed in the T level and the count of 3β-HSD-positive BMSCs in the four induction groups, with statistically significant differences between group B and groups C, D, and E (P < 0.05), as well as between group C and groups D and E (P < 0.05), but not between D and E (P > 0.05).

CONCLUSIONThe bFGF has an obvious promoting effect in the in vitro induced differentiation of rat BMSCs into Leydig cells.

Animals ; Bone Marrow Cells ; cytology ; drug effects ; metabolism ; Cell Differentiation ; Cells, Cultured ; Chorionic Gonadotropin ; metabolism ; Fibroblast Growth Factor 2 ; pharmacology ; Humans ; Leydig Cells ; cytology ; Male ; Mesenchymal Stromal Cells ; cytology ; drug effects ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Testosterone ; metabolism

Adolescent ; Adult ; Diabetes Mellitus, Type 1 ; blood ; complications ; genetics ; Diabetic Angiopathies ; blood ; complications ; Female ; Gene Frequency ; Genotype ; Homocysteine ; blood ; Humans ; Male ; Methylenetetrahydrofolate Reductase (NADPH2) ; genetics ; Mutation ; Polymorphism, Genetic ; Regression Analysis

Bronchial Hyperreactivity ; Case-Control Studies ; Child ; Child, Preschool ; Female ; Humans ; Male ; Rhinitis, Allergic, Perennial ; physiopathology ; Rhinitis, Allergic, Seasonal ; physiopathology

Objective To investigate the expressions of transferrin receptor (TfR) mRNA, ferritin(Fn) mRNA and iron regulatory proteinl (IRP-1) mRNA in the placentas complicated with fetal iron deficiency(ID). Methods Depending on the cord SF,the subjects were divided to fetal ID group and fetal iron sufficient( IS) group. TfR mRNA, Fn mRNA and IRP - 1 mRNA in placentas were measured by RT - PCR. Results 1. The expression of TfR mRNA in ID group was 1.10 ? 0. 26, it was significantly higher than that in IS group (t=0.028 P0.05) ;4. TfR mRNA and Fn mRNA correlated with fetal IS respectively. Conclusion Fetal ID induces highly expressed TfR mRNA and lower level of Fn mRNA to furthest satisfy the iron need for fetus.

Background The retina microglia play a eliminating effect on apoptotie cells in the neural retinal layer of normal rats during postnatal development.Milk fat globule epidermal growth factor 8(MFG.E8)can combine specifically with phosphatidylinositol serine of the surface of apoptotie cells and enhance macrophage phagoeytosis of apoptotic cells.Objective Present study was to evaluate the localization and expression of MFG-E8 and its relevant cytokines in the neural retinal layer of normal rats during postnatal development Methods Normal royal college of surgeon(RCS)rats were divided into P0,P3,P7,Pi4,P30,P45 groups according to their postnatal days,and the 30-day-old RCS rats(2 rats)served as controls.Double stain of M FG.E8 and microglial cells marker(CD11b)was performed by immunofluorescence.Expressions of MFG-E8,integrin β5,CD11b and interleukin-6(IL-6)mRNA in the neural retina were analyzed by real-time quantitative reverse transcription polymerase chain reaction(RT-PCR).The utilization of animals complied with the Regulation for the Administration of Affair Concerning Experimental Animals by State and Science and Technology Commission.Results MFG-E8 and CD11b were positively co-expressed in retinal ganglion cell layer and external plexiform layer with the green fluorescence for FITC-labeled IgG and red fluorescence for cy3-labeled lgG respectively in normal adult rats.RT-PCR showed that the mRNA of MFG-E8,integrin 85,CD11b and IL-6 was detectable at P0 rats.The expression level of these eytokines began to rise fterward and reached peak value at P14 rats and then declined gradually,showing significant differences among different ages groups in various cytokines mRNA expression(all P<0.05).Conclusion MFG-E8 can be specifically expressed in the neural layer of retina microglia in RCS rat.

Objective To explore the effects of exercise training(ET)on the functional recovery of nerves (NFR)in rats with intracerebral hemorrhage(ICH).Methods Ninety Sprague-Dawley rats were randomly divided into an ET group,a control group and a sham operation group(SO group).An ICH model was established with colla- genase in the ET and control groups,while sodium chloride was used with the SO group.The ET group exercised for 40 min a day from 24 h to 30 d after the operation.Attitudinal reflexes,balance function and muscle strength were assessed at 24 h,3 d,7 d,14 d,21 d and 28 d after the operation.Results Compared with the control group, NFR values were increased significantly in the ET group,and there was no obvious dysfunction in the SO group. Conclusion Early ET can contribute to functional recovery after ICH.

Aim To study the expression of caspase-12 mRNA and protein following focal cerebral ischemia-reperfusion in rats,and explore the effect of endoplasmic reticulum pathway on neuronal apoptosis.Methods 60 male Wistar rats were randomly divided into sham-operated group and ischemic group.The middle cerebral artery occlusion(MCAO)models were established by using the intraluminal suture occlusion method,neuronal apoptosis was detected by TUNEL staining,the expression of caspase-12 protein was detected by immunohistochemical staining,the expression of caspase-12 mRNA was detected by RT-PCR method.Results In ischemic group,the number of apoptotic cells and the expression of caspase-12 mRNA and protein were gradually increased following prolonged cerebral reperfusion,reached the peak at 24 h.The number of apoptotic cells and the expression of caspase-12 mRNA and protein in ischemic group were significantly less than those of sham-operated group at all times(P

OBJECTIVETo discuss the relative association of soft tissue tension and cervical physiological curvature chang in patients with scapula muscle fasciitis.

METHODSFrom February 2012 to December 2012,29 patients with scapula muscle fasciitis were investigated. There were 10 males and 19 females with an average age of 27.77 years old (ranged from 22 to 40 years old). Routine AP and lateral cervical X-rays were done in all patients. Cervical lordosis was measured according to Borden's method and the pain point tension was measured by soft tissue tension meter. Finally,perform statistic analysis to bove data.

RESULTSLateral X-rays showed 9 cases were normal cervical lordosis, 18 cases were cervical lordosis decreased, 2 cases were cervical lordosis increased. The regression equation of cerical lordosis changes D(Y) and soft tissue tension displacement D0.5 kg (X) was Y = -15.069 + 3.673X.

CONCLUSIONThere is linear relationship between soft tissue tension and cervical physiological curvature change. With the soft tissue tension increases, the cervical lordosis trend to decrease.

Adult ; Biomechanical Phenomena ; Cervical Vertebrae ; pathology ; physiopathology ; Fasciitis ; pathology ; physiopathology ; Female ; Humans ; Male ; Mechanical Phenomena ; Scapula ; pathology ; physiopathology ; Young Adult

Objective To compare the effects of propofol versus midazolam on serum hydrocortisone in the aged traumatic brain injury. Methods 64 patients (aged 65-72 years) with traumatic brain injury during mechanical ventilation were divided into propofol group (n=32) and midazolam group(n=32).The hemodynamics data,intracranial pressure(ICP) and the calculated cerebral perfusion pressure(CPP) were recorded.The serum hydrocortisone of patients was detectedby enzyme linked immunosorbent assay (ELISA) at 24 h,72 h and 4 weeks in intensive care unit(ICU). Results There was no differences in partial pressure of carbon dioxide,heart rate,meanartery pressure,pulse biood oxygen saturation (SpO2 ),armpit temperature,endexpiratory gas(PEr CO2),intraeranial pressure (ICP) and cerebral pertusion pressure (CPP) between the two groups (P＞0.05).The serum hydrocortisone in propofol group at 24 h and 72 h [(269.7±43.2) nmol/L and (235.0±67.0) nmol/L] were lower than in midazolam group [(278.0±75.5) nmol/L and (243.2±42.4) nmol/L] (t=5.312 and 5.919,both P=0.000).The serum hydrocortisone in propofol and midazolam group at 4 weeks were (209.1±73.9) nmol/L and (210.8±66.6) nmol/L,respectively,no significant difference was found(t=0.075,P =0.938). Conclusions There is a significant difference in the effects of propofol and midazolam on the early level of hydrocortisone in the aged patients with traumatic brain injury.