The afferant projections and their chemical nature from the midbrain raphe nuclei and periaqueductal gray to the thalamic ventral posterior nucleus were st- udied by HRP retrograde tracing combined with PAP immunocytochemical method Following injections of HRP into the thalamic ventral posterior nucleus, and reactions by HRP and PAP were performed subsequently. The double labelling cells containing HRP-positive granules and substance P-like immunoreactivity were found in various areas of brain, that is, the contralateral principal sensory nucleus of trigeminal nerve,nucleus gracilis,nucleus cuneatus, bilateral ventrola- teral divisions of the periaqueductal gray and midbrain raphe nuclei.A comparison of cell counts of double labeled cells with the total HRP-labeled cells indicated that the cells observed in the dorsal raphe nuclei were 21?7 in each rat, which constituted 48% of total HRP-labeling cells; The double labeling neurons in nuclei raphe centralis superior were found in two cases only, the cell bodies were very sparse and distributed mainly in the caudal area of these nuclei The double labeling cells were detected in bilateral ventrolateral divisions of periaqu- eductal gray, predominantly ipsilaterally. The double labeling cells observed in each rat were 26?9 ipsilaterally and 11?4 contralateraIly. The numbers of double labeling cells were 38% of the total counts of HRP-labeling cells in each side. These results above indicate that the thalamic ventral posterior nucleus receives afferent projections from midbrain raphe nuclei and ventrolateral division of periaqueductal gray and in the pathway, a part of substance P-positive neurons are exhibited. Therefore, this study provides evidence for existance ascending projection of substance P-like immunoreactivity.

Objective:To observe the clinical effect and adverse reaction of capecitabine as first-line monotherapy in elderly patients with stage Ⅱa breast cancer.Methods:From June 2002 to June 2005,71 elderly patients with stage Ⅱa breast cancer received chemotherapy(different scheme:capecitabine group and CEF group) after operation.The efficacies and adverse reactions were evaluated and compared between the two groups.Results:The 3-year and 5-year survival rates of patients in capecitabine group were 97.06% and 94.12%,respectively; the relapse rate was 5.88%; all were comparable to those of CEF group. One of the advantages of capecitabine was its oral administration. The adverse effect of capecitabine was mainly hand-foot syndrome,with an incidence of 82.35%,but was tolerable. The gastrointestinal reaction and bone marrow repression in capecitabine group were significantly lower than those in the CEF group(P

PEI Xue-yi has 60 years,experience in treating pediatric diseases with traditional Chinese medicine,especially obtains good effect in children's nephrapiathy.Based on the regulation and characteristics of children's zang-fu,yin-yang,blood-qi and children's nephrapiathy,he makes different therapeutic plans in different phases.In clinical treatment,he emphasizes the lung,the spleen and the kidney and combines syndrome differentiation with disease diagnosis.Eliminaing pathogens,excessive damp-heat is used in acute phase and strengthening healthy qi,securing the spleen and kidney is used in recovery phase.Children's nephrapiathy is treated by three phases as the edema,protein urine and rescovery stage.He adopts the methods of dispersing lung qi and invigorating spleen for diuresis,clearing heat-damp,nourishing spleen and kidney,nourishing yin for protecting lower jiao.

Background The visual system of animal have to optimally adjust in various environmental conditions in order to obtain stable and effective visual funetion.However,the color vision system of animals which encounter uncertainty of spectral signals should be plastic.Whether the densities of various cones and expression of opsins change with long-time spectral deprivation is unclear.Objective This study was to investigate the changes of cone density as well as the expression of corresponding opsin and mRNA following the long-term illumination of monochromatic light.Methods Thirty 3-day-old guinea pigs were randomized into 3 groups and exposed tO the 530 nm green light,400 nm purple light and white light for consecutive 8 weeks respectively.The flat-mounted retinal sample was prepared and divided into dorsal zone,ventral zone and mixed zone anatomically according to the distribution of difierent light-sensitive cone.The changes in density of cone cells sensitivited to different colored light were detected by single-1abel or double-label immunocytochemistry.The levels of opsin and its mRNA were determined using Western-blot and real-time PCR respectively.Results The density of green-sensitivity cones was significantly different in the dorsal zone of retina among green light group,purple light group and white light group (F=234.28,P<0.01).Compared with white light group,the density of green-sensitive cones in dorsal retina of green light group was obviously higher but that of purple light group wag evidently lower(q=389.68,P<0.01；q=67.11,P<0.01).No significant difference was found in the density of purple-sensitive cones in the ventral zone of retina among green light group,purple light group and white light group(F=3.14,P>0.05).The density of coexpression of the mixed cone cells was increased in green light group(q=157.55,P<0.01)but decreased in purple light roup (q=254.85,P<0.01)in comparison with white light group.The expression levels of green-opsin and green-opsin mRNA in green light group was significantly elevated(q=184.45,P<0.01；q=4.71,P<0.05),but those of purple light group were evidently declined(q=5.87,P<0.05；q=346.66,P<0.01)in comparison with white light group.There was no statistically significant differences were found in the expression of purple-opsin and its mRNA among all the groups(F=1.24,P>0.05；F=3.27,P>0.05).Conclusion After the exposure of long-time monochromatic light illumination,monochromatic cones density and its opsin in guinea pig occur the corresponding alteration to gain good spatial vision as a compensatory reaction.These outcomes imply that there is some plasticity during the development of color vision.The increase of green-sensitive cones might be from the differentiation of coexpression cones in transition region.

The original strain was treated with UV combining LiCl. The total carotenoid yield of the strain UL-61 was 7.62mg/L, the maximal yield of astaxanthin had reached 616.8?g/g under 25℃. 8 variables including fermentation temperature, initial pH were optimized by Plackett-Burman design and Response Surface Analysis of SAS software. The temperature, initial pH and corn steep liquor were the major factors. The optimal conditions were predictted to be 16.78℃, pH4.73 and 7.06 mg/L, respectively. Under these conditions, the theroretical maximal yield of carotenoid was 3.9407 mg/L and the practical maximal yield was about 3.9261mg/L. The carotenoid production was increased by 20.4% when Phaffia rhodozyma was cultivated under the optimal conditions as compared with the control.

OBJECTIVETo investigate the mid-term outcome of operation for thoracolumbar tuberculosis. METHODS : Twenty-eight patiens with thoracolumbar tuberculosis underwent one stage anterior debridement,interbody fusion with bone graft and posterior pedicle screw internal fixation treatment from July 2006 to July 2011. There were 17 males and 11 females. Total 17 patients had nerve injuries ,including 6 cases of grade B, 5 cases of grade C, 6 cases of grade D according to Frankel classification. The poisoning symptoms of tuberculosis and recovery of spinal function were observed. The bone fusion and recovery of [umbar function were evaluated.

RESULTSAll the patients were followed up ,and the duration ranged from 39 to 85 months (mean 57 months). The clinical symptoms were controlled gradually, and the thoracolumbar back pain was alleviated after operation. Among the 17 patients with complications of nerve injuries, 3 patients were improved from preoperative grade B to postoperative grade D, 3 patients were improved from preoperative grade B to postopertive E, 5 patients with preoperative grade C and 6 patients with preoperative D were almostly recovered to normal after operation. According to JOA scoring system for curative effect evaluation, the excellent and good rate at the 3rd month, the 1st year, the 3rd year and the 5th year after operation were 67.86% ,82.14% ,85.71% ,89.29% and 91.30% respectively. The results at the 6th month and the 1st year had no statistical differences compared to the results at the 3rd month (P > 0.05); but the results at the 3rd year and the 5th year were better than that at 3 months after operation (P < 0.05); and the results between 3 yesrs and 5 years after operation had no statistical differences (P < O.05). The degeneration of adjacent segments were evaluated according to the California University (Universith of California at Los Angeles , UCLA) score. The degeneration rate was 53.57% (15/28) at the 3rd year after surgery, which was better than that before surgery. Twenty-three patients were followed up for 5 years ,and the degeneration rate was 86.96% (20/23) ,which was better than those of before surgery and 3 years after surgery.

CONCLUSIONThe surgical treatment for thoracolumbar spinal tuberculosis can achieve the thorough debridement, reconstruction of spinal stability, recovery of lumbar function and promote the functional recovery of the spinal cord, which is an effective method of treatment. However, the mid term follow-up showed that more severe degenerative changes were found in the postoperative adjacent segment.

Adult ; Aged ; Female ; Humans ; Lumbar Vertebrae ; surgery ; Male ; Middle Aged ; Spinal Fusion ; methods ; Thoracic Vertebrae ; surgery ; Tuberculosis, Spinal ; physiopathology ; surgery

Objective To identify the dynamic influence of antibiotics use on T helper cell(Th) 1/Th2 cytokine balance in neonatal rats in their early life.Methods Twenty-four newborn SD rats were randomly divided into 3 groups including 2dCef group,7dCef group and a control group (n =8).SD rats at 2 or 7 days of age were injected Cefotaxime sodium intraperitoneally for 3 consecutive days.The control group was injected the same amount of phosphate buffer saline.Serum and bronchoaveolar lavage fluid (BALF) samples were collected on 35 days old and diffe-rential cell count in BALF was done.Enzyme linked immunosorbent was used to detect the concentration of interleukin(IL)-12,interferon-γ(IFN-γ),IL-4 and IL-5 in serum and BALF,and real-time quantitative PCR was used to detect mRNA expression of those cytokines in lung tissues.Results The number of total cells,neutrophils,and lymphocytes in Cefotaxime treated on 2nd day after birth were significantly higher than those in the controls and 7th day group (F =93.78,15.84,7.36,all P ＜0.05).For Thl cytokines detection:the IL-12 secretion in BALF and serum and INF -γsecretion in BALF of the 2 antibiotic groups were lower than those in control group (F =26.53,12.95,47.18,all P ＜ 0.05),the decrease in 2dCef group were more obviously than 7dCef group [(127.72 ± 12.35) ng/L vs (198.15 ± 18.93) ng/L,(105.91±13.61) ng/Lvs (133.63 ±13.82) ng/L,(147.23 ±24.10) ng/Lvs (178.52±12.46) ng/L,all P ＜0.05].The mRNA expression of IL-12 in antibiotic groups were lower than those in control group (F =33.60,P ＜0.05),and the decrease in 2dCef group was more obvious than that in 7 dCef group (0.073 ± 0.023 vs 0.093 ± 0.028,P ＜0.05).For the Th2 cytokines:the IL-4 secretion concentration and mRNA expression in the 2 antibiotic groups were higher than those in the control group (BALF,serum and lung) (F =64.26,13.79,11.54,all P ＜ 0.05),the increase in 2dCef group was more obvious than that in 7dCef group[(103.65 ± 7.68) ng/L vs (82.04 ± 8.77) ng/L,(87.81 ± 4.72) ng/L vs (69.69 ± 7.79) ng/L,(0.067 ± 0.036) ng/L vs (0.051 ± 0.055),all P ＜ 0.05];however,no significant differences of IL-5 either mRNA or cytokine secretion being detected among these 3 groups (F =0.50,0.75,0.08,all P ＞ 0.05).Conclusions Antibiotic use during early time of neonate rats alters postnatal immune cells distribution in the lung and promotes the shift in cytokine balance towards a Th2 profile,and the earlier the antibiotic use,the more serious the impact.

Adding the qualification examination of rural general practicing assistant doctors conforms to the needs of the rural doctors practicing medicine according to law.It benefits to the progress of practicing physician and improves the rural doctors'quality.Meanwhile, it has great significance in standardized management and stabilize the rural doctors.The villages and towns examination of practicing assistant doctors'qualification examination as an exam-ple, current relevant laws and policies provided legal basis.Meanwhile, the object of policy implementation that rural doctors desire the policy.This three aspects make adding the qualification examination of rural general practicing as-sistant doctors is feasible.In order to guarantee the practicing physicians process of rural doctors, we should complete the current laws, regulations and policies.Enhancing general practitioners'training and medical professional training that aims at the examination of practicing doctors'qualifications.Establishing a reasonable compensation, old-age se-curity and other social security mechanism for rural general practicing assistant doctors.

Objective To investigate protective activity against Aβ25-35-induced cytotoxicity in PC12 cells of different extracts and ursolic acid, which were isolated from pyrola decorata. Methods Aβ25-35-induced cytotoxicity in PC12 cells was established as the model in vitro. The cultured PC12 cells were divided into blank control group, DMSO control group, model control group, different extract groups of pyrola decorate and ursolic acid(UA) group. The different extract groups included ether extract (PE), acetidin extract (AE), n-butanol extract (BE), the water extract (WE), 50% ethanol extract (HEE). MTT assay was used to test the optimum concentration, and the number of viable cells in culture medium was measured by ELISA at 490 nm wavelength. Results The cell viabilities in different extracts groups(PE, AE, BE, WE, HEE) were respectively 89.3%, 77.2%, 79. 2%, 75. 1% ,74. 0% at the concentration of 5. 0 mg ? mL-1 . Moreover, ursolic acid showed the best neuroprotective activity (88.9%) at the concentration of 500 μg?L-1 . Compared with model control group, the survival rate of each group was remarkably increased, and the protective activities of PE and UA were more significant among them. Conclusion Different polar extracts of pyrola decorata and isolated ursolic acid have neuroprotective effects on Aβ25-35-induced cytotoxicity in PC12 cells in certain degrees.

Objective:To investigate the change of biological characteristics after stable knockdown of CKLF-like MARVEL transmembrane domain containing 3 (CMTM3)expression in PC3 by lentivirus shRNA and to reveal new therapeutic targets.Methods:The research includes two groups:sh393 is the experimental group in which CMTM3 is knocked down in PC3 cell line;shN is the control group in which CMTM3 is negatively knocked down.The expression of CMTM3 was detected by Western blot.The mi-gration ability of PC3 after stable knockdown was detected by Transwell and Wound healing assay.The invasion ability of PC3 was detected by Matrigel assay.Results were obtained from at least three indivi-dual experiments.Results:The expression of CMTM3 in sh393 group is significant lower than shN group (0.004 0 ±0.000 4 vs.0.490 0 ±0.055 7,P <0.001)detected by Western blot.It also had statistical significance in Matrigel assays (248.6 ±4.5 vs.113.0 ±3.3),Transwell (203.6 ±1.9 vs.103.0 ± 1.2)and Wound healing assays (95.0 ±2.9 vs.33.0 ±1.5)that knockdown of CMTM3 promoted mi-gration,and invasion of PC3 cells in vitro (P <0.001).Conclusion:Negative correlation exists between the stable knockdown of CMTM3 and change of biological characteristics in PC3 cells,and knocking down CMTM3 affects migration,and invasion ability in PC3 cells.