OBJECTIVE:To establish HPLC fingerprint sectrum of Rhaponticum uniflorum. METHODS:HPLC was performed on the column of Hypersil-ODS with mobile phase of 0.3% phosphoric acid-acetonitrile(gradient elution) at flow rate of 1.0 ml/min,detection wavelength was 220 nm,column temperature was 30 ℃ and volume injection was 10 μl. The luteolin was refer-ence,17 batches of R. uniflorum from different production places was analyzed and similarity evaluation system for chromatograph-ic fingerprint of TCM (2004 A edition)was adopted for the similarity analysis. RESULTS:There were totally 11 common peaks with similarity degree≥0.900 of 17 batches. According to the verification,the fingerprint spectrum and reference fingerprint spec-trum of R. uniflorum had good consistency. CONCLUSIONS:The established method is specific and stable,and can provide refer-ence for the identification and quality control of R. uniflorum.

OBJECTIVE:To establish a method for simultaneous determination of luteolin and apigenin in Mongolian medicine Scabiosa atropurea. METHODS:HPLC was performed on the column of Diamond C18 with mobile phase of acetonitrile-0.4%phos-phoric acid(34∶66,V/V)at a flow rate of 1.0 ml/min,the detection wavelength was 350 nm,column temperature was 30 ℃,and the injection volume was 10 μl. RESULTS:The linear range was 66-396 ng for luteolin(r=0.999 8)and 93-558 ng for apigenin (r=0.999 6);RSDs of precision,stability and reproducibility tests were lower than 2%;recoveries were 98.15%-101.79%(RSD=1.42%,n=6) and 98.66%-104.05%(RSD=1.81%,n=6),respectively. CONCLUSIONS:The method is simple with good precise,stability and reproducibility,and can be used for the simultaneous determination of luteolin and apigenin in Mongo-lian medicine S. atropurea.

Acute Disease ; Angioplasty, Balloon, Coronary ; adverse effects ; Compartment Syndromes ; etiology ; Female ; Humans ; Middle Aged

OBJECTIVETo study the influence of bone marrow mesenchymal stem cells (MSCs) transplantation on hypoxic pulmonary hypertension (HPH) in rats.

METHODSSD rats MSCs were separated, cultivated, identified and labeled by the green fluorescence protein (GFP) gene virus and transplanted in vitro. Healthy male SD rats were randomly divided into four groups: Normal control group (NC group) and HPH group (eight rats respectively), HPH+ MSCs transplantation group and HPH+ VEGF+ MSCs transplantation group (twenty-four respectively). The test employed atmospheric intermittent low oxygen method to establish the rat model of pulmonary hypertension and stem cells were transferred and transplanted. The rats' mean pulmonary artery pressure (mPAP) was observed; right ventricular hypertrophy index (RVHI) was calculated; the morphological change of lung small artery in various groups of rats was observed under the microscope; the distribution of lung small artery and adenovirus transfection fluorescently labeled MSCs was observed under a fluorescent microscope after 7, 14 and 28 days when stem cell was transplanted.

RESULTSFor NC group, the mPAP (mmHg) was 15.5 +/- 1.5 after twenty-eight days while the mPAPs for HPH , MSCs and MSCs+ VEGF were 26.1 +/- 1.9, 21.6 +/- 2.7 and 20.1 +/- 2.9 respectively which were apparently higher than that of NC group (P < 0.01) and compared with HPH group (P < 0.01), which declined clearly. There was no significant difference between MSCs and MSCs+ VEGF. After twenty-eight days, RVHI for NC group was 0.28 +/- 0.02 while the RVHI for HPH, MSCs and MSCs + VEGF were 0.43 +/- 0.07, 0.34 +/- 0.03 and 0.35 +/- 0.01 respectively which was apparently higher than that of NC group (P < 0.01) but which was clearly lower than that of MSCs and MSCs+ VEGF (P < 0.05) and there was no significant difference between MSCs and MSCs + VEGF. For HPH group, pulmonary arteriole wall became apparently thicker, the lumen became significantly narrow and nearly obstructed after twenty-eight days, the endothelial cells were incomplete; compared with HPH group, pulmonary arteriole wall of MSCs group became thin, the lumen was smooth and the completeness of endothelial cells was improved. Whereas for MSCs and MSCs + VEGF, these changes were not significantly clear.

CONCLUSIONAfter MSCs transplantation, mPAP and RVHI decline sharply and lung small artery remodeling is improved which partially reverses HPH process; there is no significant difference between VEGF together with MSCs transplantation group and pure MSCs.

Animals ; Disease Models, Animal ; Hypertension, Pulmonary ; etiology ; metabolism ; surgery ; Hypoxia ; complications ; Male ; Mesenchymal Stem Cell Transplantation ; Rats ; Rats, Sprague-Dawley ; Vascular Endothelial Growth Factor A ; pharmacology

Adult ; Femur Head Necrosis ; chemically induced ; drug therapy ; Glucocorticoids ; therapeutic use ; Humans ; Male ; Paraquat ; poisoning

BACKGROUND: There have been reports at home and abroad about effects of estrogen upon the dopamine amount in substantia nigra in the midbrains while the neuroprotective effects of estrogen are still being studied.OBJECTIVE: To observe the effects of estrogen on dopaminergic neurons and explore the feasibility of preventing and treating Parkinson disease with estrogen.DESIGN: A randomized controlled study based on the experimental animals.SETTING: General neurosurgery institute in a hospital of a military medical university of Chinese PLA.MATERIALS: The trial was conducted in the General Neurosurgery Institute of Xijing Hospital,the Fourth Military Medical University of Chinese PLA from October 2003 to February 2004 with 50 healthy,first-grade Wistar rats as subjects. INTERVENTIONS: The rats were randomly assigned into 5 groups with 10in each group. Group 1 was normal control,group 2 sham-operation group,and groups 3,4,5 were ovariectomy groups. In group 3,10 μg of estradiol was administered twice a day ineach rat after ovariectomy. Each rat in group 4 was administered with estrogen antagonist,5 μg tamoxifen twice a day as well as estrogen. In group 5,only ovariectomy was performed. After stereotaxic injection of 6-hydroxydopamin into substantia nigra in the midbrains,the TH positive neurons were labeled and counted with immunohistochemic method and the rat's behavior was observed.MIAN OUTCOME MEASURES:①the circles of rat's rotation provoked by apomorphine.②the TH positive neuron count in the middrains of rat's substantia nigra 30 days after ovariectomy.RESULTS: Baseline characteristics among the groups were no difference ( P ＞ 0.05). The result of group 3 was different from that of group 5 ( P＜ 0.05 ). The result of group 4 was also different from that of group 3 and group 5 (P ＜ 0.05) . The TH positive neuron count in the midbrains ingroup 3 also differed from that in other groups( P ＜ 0.05).CONCLUSION: Estrogen acts as a neuroprotectant of the nigral dopaminergic neurons in the midbrains not only through estrogen receptor-dependent pathways but probably also through others.

OBJECTIVE:To establish the quality standard for Mongolian medicine Yishen powder. METHODS:TLC was used for the qualitative identification of Rheum palmatum and Terminalia chebula in the preparation;HPLC was used for the contents de-termination of aloe emodin,rhein,emodin,chrysophanol and physcion:the column was Inertsil C18 with mobile phase of metha-nol-0.1% phosphoric acid(gradient elution)at a flow rate of 1.0 mL/min,detection wavelength was 254 nm,column temperature was 35 ℃ and the injection volume was 10 μL. RESULTS:The TLC pots of R. palmatum and T. chebula were clear and well-sepa-rated,negative control without interference. The linear range was 23.55-117.75 ng for aloe emodin(r=0.9999),44.72-223.62 ng for rhein(r=0.9998),43.18-215.90 ng for emodin(r=0.9997),77.41-387.12 ng for chrysophanol(r=0.9999)and 46.02-230.10 ng for physcion (r=0.9997);RSDs of precision,stability and reproducibility tests were lower than 2.0%;recoveries were 95.80%-99.66%(RSD=1.21%,n=6),95.01%-98.07%(RSD=0.92%,n=6),95.06%-97.84%(RSD=0.5%,n=6),95.19%-97.66%(RSD=1.07%,n=6)and 95.07%-98.20%(RSD=0.95%,n=6). CONCLUSIONS:The established standard can be used for the quality control of Mongolian medicine Yishen powder.

Objective To analyze the clinicopathologic features,effect of surgical treatment and prognosis of elderly patients with gastric cancer.Methods The records of 84 elderly patients(aged 80 years or above) with gastric cancer who underwent operation in our hospital from 2000-2008 were analyzed retrospectively.Results Ten patients had early gastric cancer(1a,8 cases,1b,2cases),stage II 12 cases,stage III 45 cases(53.6%) and stage IV 17 cases.Among them,81% patients had one or more co-morbidities.Cardiovascular disease was present in 43 cases(51.2%).Resection rate was 85.7%(72/84).Radical resection rate was 60.7%(51/84).Limited nodal dissection(

Objective To investigate the effects of thymosin ?1 on the proliferation of human umbilical veinssel endothelial cells(HUVECs) and synthesis of vascular endothelial growth factor(VEGF).Methods HUVECs(ECV-304) were cultured with the treatment of 100 ?l thymosin ?1 at 0,5 or 2.5 ?g/ml for 1 d in vitro.The proliferation of HUVECs were measured with MTT assay,cell cycle was tested with flow cytometry and the synthesis of VEGF was detected with Western blot analysis.Results Thymosinal promoted the proliferation of HUVECs,and the cells in S-phase was increased,and obviously promoted the synthesis of VEGF.Conclusion Thymosin ?1 promotes the proliferation of HUVECs and increases the synthesis of VEGF in HUVECs,and may have the effect of increasing the angiogenesis in the process of wound tissue.

Objective To observe the expressions of C/EBPs mRNA and protein in the sebaceous gland and to study the relationship between C/EBPs and the differentiation of sebocytes. Methods RT-PCR and immunhischemistry were used to detect the expressions of C/EBPs mRNA and protein in the embryo and adult sebaceous glands. Results The lowest expression of C/EBP? mRNA in the sebaceous gland was found in embryonic period, but increased gradually during the developmental stages. The expression of C/EBP? mRNA in the sebaceous gland showed different expression patterns, i.e. it maintained at low level in all of the developmental stages. Expressions of C/EBP? and ? protein were found in the nuclei of sebocytes in embryonic period but in the basal cell layer of sebaceous glands in maturation phase. Conclusion The expression patterns of C/EBPs are different in the sebaceous gland from embryonic to adult stages, suggesting that C/EBP? and ? may play important roles in the development of human sebaceous gland.