Neuron is the basic structure and functional unit of nervous system. Once the neurons are damaged or lost, the balance of neuroregulation will be destroyed and a series of nervous system diseases will be induced. Parkinson's disease (PD) is a kind of chronic neurodegenerative disease caused by selective loss of many dopaminergic neurons in the dense region of the substantia nigra in the ventral midbrain. At present, conventional drugs and adjuvant therapies can only relieve clinical symptoms to a certain extent, but cannot fundamentally delay the progress of the disease. With the rapid development of stem cells and reprogramming technologies around the world, cell transplantation to deal with neurodegenerative diseases including Parkinson's disease has become a new and potential therapy. This paper mainly summarizes the molecular mechanisms of Parkinson's disease, the preparation of autogenous dopaminergic neurons and the research progresses of dopaminergic neurons transplantation in the treatment of Parkinson's disease.

ObjectiveTo explore the feasibility and efficacy of hyperbaric oxygen (HBO) therapy combined with mild hypothermi on severe craniocerebral injury (SCI).MethodsAll 80 SCI patients were randomly divided into therapeutic group (52 cases) and control group (28 cases). All patients received general synthesis treatment; while the hyperbaric oxygen combined with mild hypothermia treatment was added to the therapeutic group. Changes of Vm, Vs and PI of middle cerebral artery (MCA) in systolic stage were detected by transcranial-Doppler (TCD) before and after treatment. The plasma level of endothelin (ET) was also tested and prognosis of patients was analyzed.ResultsVm, Vs and PI of MCA in systolic stage improved obviously and ET reduced greatly in therapeutic group compared with those in the control group (P<0.01), and prognosis was also superior to control group.ConclusionHyperbaric oxygen combined with mild hypothermia can improve the consciousness state and prognosis of SCI patients as a result of the relaxation of the cerebral vascular spasm and the reduction of ET, which may contribute to the abatement of the cerebral ischemia and hypoxia.

To study the in situ intestinal absorption of five oligosaccharides contained in Morinda officinalis How. (sucrose, kestose, nystose, 1F-Fructofuranosyinystose and Bajijiasu). The absorption of the five oligosaccharides in small intestine (duodenum, jejunum and ileum) and colon of rats and their contents were investigated by using in situ single-pass perfusion model and HPLC-ELSD. The effects of drug concentration, pH in perfusate and P-glycoprotein inhibitor on the intestinal absorption were investigated to define the intestinal absorption mechanism of the five oligosaccharides in rats. According to the results, all of the five oligosaccharides were absorbed in the whole intestine, and their absorption rates were affected by the pH of the perfusion solution, drug concentration and intestinal segments. Verapamil Hydrochloride could significantly increase the absorptive amount of sucrose and Bajijiasu, suggesting sucrose and Bajijiasu are P-gp's substrate. The five oligosaccharides are absorbed mainly through passive diffusion in the intestinal segments, without saturated absorption. They are absorbed well in all intestines and mainly in duodenum and jejunum.
Animals ; Drugs, Chinese Herbal ; chemistry ; pharmacokinetics ; Intestinal Absorption ; Intestine, Small ; metabolism ; Male ; Morinda ; chemistry ; Oligosaccharides ; chemistry ; pharmacokinetics ; Perfusion ; Rats ; Rats, Sprague-Dawley

To enhance the immunogenicity of DNA and adenoviral vector vaccines expressing HIV-1 subtype B gp160, human interleukin 15 (hIL15) DNA adjuvant (pVR-hIL15) was constructed. BALB/c mice received DNA prime/protein boost immunization with pVR-HIVgp160/Ad5-HIVgp160 alone or combined with pVR-hIL15. Cellular and humoral immune responses were evaluated by IFN-gamma enzyme-linked immunosorbent spot assay and enzyme-linked immunosorbent assay, respectively. Compared with those immunized with vaccines alone, the mice immunized with vaccines combined with pVR-hIL15 had significantly increased specific cellular response and antibody titer (P < 0.05). It suggests that the IL15 DNA adjuvant can enhance the immune responses induced by prime-boost regimen using DNA and adenoviral vector encoding HIV-1 subtype B gp160.
Adenoviridae ; genetics ; Adjuvants, Immunologic ; Animals ; Antibodies, Viral ; immunology ; Antibody Specificity ; Female ; Genetic Vectors ; genetics ; HIV Envelope Protein gp120 ; immunology ; HIV Envelope Protein gp160 ; genetics ; immunology ; HIV Envelope Protein gp41 ; immunology ; Humans ; Immunity, Cellular ; Immunity, Humoral ; Interleukin-15 ; genetics ; Mice ; Mice, Inbred BALB C ; Vaccines, DNA ; genetics ; immunology

OBJECTIVETo explore the methods and therapeutic efficacy of restitution combined with percutaneous vertebroplasty (PVP) for treating osteoporosis vertebral compression fracture (OVCF).

METHODSRecruited were 132 senile patients with OVCF who were willing to receive minimally invasive therapy were assigned to the comprehensive treatment group and the percutaneous kyphoplasty (PKP) group. The 89 vertebral bodies in the 68 cases of the comprehensive treatment group received restitution combined with PVP, while the 81 vertebral bodies in the 64 cases of the control PKP group received PKP alone. All patients completed the follow-ups for more than 3 years. The therapeutic efficacy was assessed using visual analogue scale (VAS), Oswestry disability index (ODI), Cobb's angle, the height ratios of the diseased vertebral anterior edge and middle edge. The operation time for a single centrum, the perspective time during the operation, the incidence of bone cement leakage, the injection rate of the bone cement, the cost of hospitalization, and the hospital days were compared between t he comprehensive treatment group and the PKP group.

RESULTSCompared with before treatment in the same group, the VAS and ODI were significantly lower, the height ratios of the diseased vertebral anterior edge and middle edge, and the Cobb's angle were obviously improved in the two groups, showing statistical difference (P < 0.01). There was no significant difference in the aforesaid indices between the two groups after treatment at the same time point (P > 0.05). There was no significant difference in the incidence of bone cement leakage, th e injection rate of the bone cement, or the hospital days between the two groups (P > 0.05). But the operation time f or individual vertebral body, the perspective time during the operation, and the cost of hospitalization were obviously less in the comprehensive treatment group than in the PKP group (P < 0.01).

CONCLUSIONSRestitution combined PVP could achieve the same therapeutic efficacy as that of the PKP. It could effectively restore the diseased vertebral height and correct the spinal kyphosis. Besides, there was no statistical difference in the incidence of bone cement leakage.

Aged ; Aged, 80 and over ; Female ; Fractures, Compression ; etiology ; therapy ; Humans ; Kyphoplasty ; Male ; Medicine, Chinese Traditional ; methods ; Middle Aged ; Osteoporosis ; complications ; Posture ; Spinal Fractures ; etiology ; therapy ; Vertebroplasty ; methods

Objective To observe the effects of simplified recipe ofBuyang Huanwu Decoction on expression of APJ in the brain of local cerebral ischemia rats;To discuss its mechanism of action. MethodsFocal cerebral ischemia rat models were established by middle cerebral arterial occlusion. The adult rats were randomly divided into sham-operation group, model group,Buyang Huanwu Decoction group and simplified recipe ofBuyang Huanwu Decoction group. Administration groups were given relevant medicine for gavage. The expressions of APJ protein and APJ mRNA at different time points were detected by Western blot and RT-PCR.ResultsCompared with model group and sham-operation group, the expression of APJ protein and APJ mRNA at different time points in Buyang Huanwu Decoction group and simplified recipe ofBuyang Huanwu Decoction group significantly increased (P<0.05). The expression of APJ protein at different time points showed no difference between simplified recipe ofBuyang Huanwu Decoction group andBuyang Huanwu Decoction group;while the expression of APJ mRNA in simplified recipe ofBuyang Huanwu Decoction group was higher than Buyang Huanwu Decoction group (P<0.05).ConclusionSimplified recipe ofBuyang Huanwu Decoction plays a role in neural protection and restoration by promoting the expression of APJ in the brain of focal cerebral ischemia rats.

Background The establishment of diabetic animal model is a crucial step for the study about diabetic eye diseases. At present,the main modeling method include the injection of streptozotocin and alloxan. But the shortcoming of the former is an expensive price, and that of the later is high death rate of animals. Objective This experiment was to discuss the way which decrease the death of alloxan-injected animal and explore the effects of high blood glucose on the posterior capsular opacification (PCO). Methods Forty clean healthy male New Zealand white rabbits were randomly divided into 2 groups. 90mg/kg of alloxan were injected via ear vein once in 20 rabbits to create the diabetic animal models,and the equivalent amount of normal saline solution was injected at the same way as normal blood glucose group. The successful models were selected in the animals with the blood glucose level over 12. 0 mmol/L two weeks later, and PCO of lens were graded based on the method of Odrieh under the slit lamp. Extracapsular lens extraction was then performed on the right eye of rabbits in both groups, and the posterior capsules were obtained from these eyes at the 6th, 10th and 14th days after operation. The expression of proliferating cell nuclear antigen ( PCNA ) in posterior capsular lens epithelial cell was detected by immunohistochemistry. Results The modeling successful rate was 70% after injection of alloxan. The body weight of rabbits in high blood glucose group was significantly lowed and the blood glucose was significantly elevated in comparison with normal blood glucose group ( all P<0. 05). Two weeks after surgery ,2 eyes occurred 2 grade of PCO and only one eye showed the 1 grade of PCO in the high blood glucose group. However, 1 grade of PCO was found in 3 eyes in the normal blood glucose group. Biopsy revealed that PCNA was positively expressed in the cell nuclei of LECs in high blood glucose group rather than the normal blood glucose group from the 10th day after surgery. The proliferation index of PCNA was 0. 86±0. 04 and 0. 25±0. 03 respectively in high blood glucose group and normal blood glucose group, showing a significant difference between them (t = -16. 171 ,P = 0. 000). Conclusion Stable diabetic models of rabbits can be created by intravenous injection of 90 mg/kg alloxan. High blood glucose level is one of the important factors for the development of PCO.

Objective To study the expression of insulin receptor(INSR)in endometrial cell line Ishikawa3-H-12,and the effects of insulin on proliferation,cell cycle distribution and apoptosis of Ishikawa3-H-12 cells.Methods Immunocytochemistry and RT-PCR methods were used to investigate the expression of INSR in Ishikawa3-H-12 cells.The effects of insulin at different concentrations and different time on proliferation,apoptosis and cell cycle distribution of endometrial carcinoma cells were observed by methyl thiazolyl tetrazolium(MTT)assay and fluorescence-activated cell sorting technique.Results(1) We demonstrated the expression of INSR in Ishikawa3-H-12 cell line.(2)Incubation with insulin stimulated a dose- and time-dependent proliferation response in Ishikawa3-H-12 ceils with the peak response occurring at 48 hours with 1?10~(-4)mol/L insulin incubation[proliferative rate:(340.2?15.9)%,vs control (100%),P

BackgroundOscillatory potentials (OPs) has been used extensively in experimental research and clinical diagnosis,but it is well known that OPs are the summating potentials originated from retinal rod and cone.To separate the rod and cone OPs is helpful for us to diagnose some retinal diseases.ObjectiveThis study was to analyze the characteristics of cone-and rod-driven OPs. Methods The retinal cone degeneration ( RCD ) and congenital stationary night blindness(CSNB) rats were used in this study and SD rats served as control,and 6 rats for each kinds of animals.Scotopic and photopic OPs were recorded in each rat under the dark adaptation for 12 hours and light adaptation for 10 minutes at the stimulate light intensities of -35,-25,-15,-5,0,5 db respectively with RETIscan Visual Electrophysical System.The scotopic and photopic OPs were extracted from flash electroretinogram (FERG) with Maflab7.0 Butterworth filtering waves,and the frequency spectrum of the OPs was analyzed by fast Fourier transform.The characteristics of OPs from RCD rats and CSNB rats were assessed and compared.Results The a wave and b wave of ERG were showed under the dark adaptation condition in both SD and RCD rats,but the b wave was absent in CSNB rat.Under the light adaptation condition,b wave was seen in both SD and CSNB rats,but a wave and b wave of RCD rat were absent.Two peaks were exhibited in both SD and RCD rats under the darkadaptation condition and high intensity of stimulate light at the lower frequency( domain frequency) of 75-110 Hz,90-120 Hz and high frequency ( minor frequency) 90- 120 Hz,110- 135 Hz respectively.In various intensities of stimulate light,CSNB rats appeared a peak at 70-100 Hz.But in light-adaptation and various intensities of stimulate light,the frequency peaks were seen at 75-95 Hz and 70-85 Hz from both SD and CSNB rats respectively.However,under the light adaptation condition,only one peak was seen in SD and CSNB rats at the 75-95 Hz and 70-85 Hz respectively.Compared with SD rats,the mean implied time of b wave was delayed and the amplitude was lowed under the light adaptation (P＜0.05 ),however,no significant differences were found in the implied time and amplitude of b wave of scotopic ERG between SD rats and RCD rats( P＞0.05 ).The scotopic OPs showed the prolong implied time and depressed amplitudes in RCD rats and CSNB rats compared with SD rats( P＜0.05 ),and the photopic OPs presented the prolong implied time and lowed amplitude in CSNB rat in comparison with SD rats (P ＜ O.05 ).ConclusionsCone- and rod-driven OPs appear very different characteristics.The results of this study imply that rod pathway gives more contribution to OPs than cone pathway.Analysis of these results will be helpful for the exploration of the origin of OPs and the diagnosis of the related disease.

OBJECTIVETo explore the distribution of qnr gene and broad spectrum p-lactamase (ESBLs) gene in gram-negative bacteria which were isolated from our hospital patients.

METHODSqnr gene in nonrepetitive 129 isolates of Escherichia coli, 10 isolates of Enterobacter cloacac and 29 isolates of K. pneunoniae were detected by polymerase chain reaction (PCR). For qnr gene positive strains, int I, SHV-1, TEM-1, CTX-M, OXA-I , OXA-II , OXA-III, DHA and EBC genes were examined. Plasmid conjugatable test was applied to examine whether qnr gene was located in conjugate plasmid and ERIC-PCR was carried out for DNA homologous analysis. ESBLs detection (according to phenotypic confirmatory test based on National Committee for Clinical Laboratory Standards criteria) and susceptibility test to 16 antibiotics were also performed.

RESULTSqnr gene was found in 6 clinical isolates including 5 strain of E. coli and one strain of E. cloacac, but qnr gene was undetectable in K. pneunoniae isolates. The 6 clinical isolates were suspectible to imipenem but resistance to some other drugs while only 2 isolates of E. coli were susceptible to quinolone. Among the 6 qnr gene-positive strains, all of them belonged to I type integron-positive isolates, 4 isolates of them were TEM-1 producing strains,with only one isolate was OXA-III gene producing strain, and 2 isolates of them were EBC producing strains. Most of them were with 2 ESBLs gene if not more. qnr gene was on transferable plasmids which could be disseminated by clone.

CONCLUSIONIn Wuhan city, the prevalence of qnr was confirmed. qnr gene were found with some ESBLs gene in the same strains, and qnr gene in suspect strains. The transmission of qnr gene producing strains could be mediated by transferable plasmids or clone, forcing us to make intensive investigation and take effective control measures.

Anti-Bacterial Agents ; pharmacology ; Bacterial Proteins ; genetics ; DNA, Bacterial ; genetics ; Drug Resistance, Bacterial ; genetics ; Enterobacter cloacae ; drug effects ; genetics ; isolation & purification ; Escherichia coli ; drug effects ; genetics ; isolation & purification ; Escherichia coli Proteins ; genetics ; Genes, Bacterial ; Humans ; Imipenem ; pharmacology ; Klebsiella pneumoniae ; drug effects ; genetics ; isolation & purification ; Microbial Sensitivity Tests ; Plasmids ; genetics ; Quinolones ; pharmacology ; Sequence Analysis, DNA ; beta-Lactamases ; genetics