Aim To investigate whether rosuvastatin induced reduction of atherosclerotic plaque was related to the expression of Sialyltransferase ( ST6 Gal-Ⅰ) in ApoE-/ - mice. Methods Six-weeks old ApoE-/ -mice fed with high fat were divided randomly into three groups: baseline group ( n=12 ) , control group ( n=12 ) and rosuvastatin group ( n =12 ) . Sixteen weeks later, control group was sacrificed. Serum and aortic intima were saved. Control group and rosuvastatin group were fed for seven weeks continually. Concentra-tions of serum lipids(TC, TG, LDL and HDL) were analyzed. Sections from the aortic root were examined by Hematoxylin-Eosin( HE) staining. The size of ath-erosclerotic lesion in each section was evaluated. Ex-pression of ST6 Gal-Ⅰ in aortic intima was detected by immunohistochemistry. Results Plasma TG and LDL-C, plaque areas and intimal thickness of control group were significant higher than those of baseline group ( P<0. 05 ) . Those results indicated that the AS model was successfully constructed. After seven weeks, the plaque areas and concentrations of serum lipids of rosu-vastatin group were obviously smaller than those of con-trol group(P<0. 05). The expression of ST6Gal-Ⅰin aortic root was decreased in control group compared to the baseline, and which was increased in control group compared to the rosuvastatin group. Conclusion Ro-suvastatin could inhibit the progression of atherosclero-sis, which might be related to the expression of ST6Gal-Ⅰ in aortic root.

Altitude ; Animals ; CA1 Region, Hippocampal ; metabolism ; physiology ; Male ; Neural Cell Adhesion Molecules ; metabolism ; Rats ; Rats, Sprague-Dawley ; Time Factors

Objective　To investigate the significance of TGF-β1, TGFRl and TGFR2 in the pathogenesis and prognosis in patients with myelofibrosis. Methods　The expression of TGF-β1 and its receptors (TGFR1 and TGFR2 ) in bone marrow tissues and the level of TGF-β1 in the blood of 23 patients with myelofibrosis were detected by SABC immunocytochemistry and ELISA repectively. Results　Expression of TGF-β1 and TGFR 1 was significantly higher in primary and secondary myelofibrosis patients than that of the control. No significant difference of TGFR2 expression was found between the groups of myelofibrosis and the control (P>0.05). The level of TGF-β1 in the blood of the patients with myelofibrosis was significantly higher than that of the control (P<0.01) and more obvious in secondary cases while TGF-β1 decreased nearly to the normal level when patients were in clinical remission. Conclusion　TGF-β1 and it's receptors may be involved in the pathogenesis of myelofibrosis and might be of importance for the prognosis of the patients with myelofibrosis.

Objective To study the effects of salt sensitivity on evolution of blood pressure and develope- ment to hypertension from adolescents to youth.Methods A baseline survey was carried out in 4623 adolescents aged 6-15 years old in Hanzhong rural area in 1987,310 of them were recruited for determination of salt sensitiv- ity using the tests of oral saline load and furosemide sodium-volume depletion.Salt sensitivity (SS) were diag- nosed in 101 while 209 subjects as no-sah sensitivity (NSS).This cohort of adolescents were followed up for av- erage 18 years.Results The response rate for this cohort of adolescents was 71.9%.At the end of follow up period,BP in subjects with baseline SS was higher in youth than that in NSS (SBP:122.9?13.1 vs 117.3?12.4, P

AIM: To analyze the effect of pigment epithelium derived factor (PEDF) on nitrogen monoxide (NO) and expression of cysteine-containing, aspartate-specific proteases-3 (caspase-3) in retinal tissues of model rats with optic nerve crush injury.METHODS: A total of 60 SD rats were randomly divided into the blank control group, model group and PEDF group, with 20 rats in each group.Except the blank control group, the optic nerve crush injury rat models were established in the other groups, and left eyeballs were taken as samples.After successfully modeling, the model group were treated with intravitreal injection of 5μL of balanced salt solution while PEDF group were treated with intravitreal injection of 5μL of PEDF (0.2μg/μL).Two weeks later, the retinal tissues were collected, and changes of shape were observed under microscope after HE staining.The changes of NO level were measured by colorimetry assay, the expression of caspase-3 mRNA and caspase-3 protein was detected by reverse transcription-polymerase chain reaction (RT-PCR) and Western-blot.RESULTS: HE staining showed that retinal tissues of the blank control group arranged neatly and clearly.Retinal ganglion cells (RGCs) arranged in a monolayer, and cells were oval, uniform in size and distribution, the cell nuclei were clear, closely arranged, with clear boundaries.The retinal tissues of the model group were sparse in shape, RGCs showed vacuolar changes, the overall number of cells was reduced, and cell nuclei of residual RGCs showed pyknosis and uneven staining.RGCs in PEDF group were with slightly edema and arranged closely, and the degree of injury was significantly milder than that in the model group.Levels of Caspase-3 mRNA and protein and NO levels in the three groups showed the model group > PEDF group > blank control group (all P < 0.05).CONCLUSION: The application of PEDF can down regulate the expression of Caspase-3 and NO in rates with optic nerve injury and reduce RGCs injury.

OBJECTIVETo investigate the effect of different pressure oxygen pre-breathing in preventing decompression sickness of rats.

METHODSForty male SD rats were randomly divided into 4 groups: decompression sickness (DCS) group and three oxygen pre-breathing groups with 1 ATA, 2 ATA and 3 ATA pressure respectively. The rats of DCS group were placed in the hyperbaric chamber and the chamber was compressed evenly within 3 minutes to depths of 7 absolute atmosphere(ATA) and held at the designated depth for 60 min, then decompressed (3 min) at constant speed to the surface pressure. After that, the rats were taken out for further detection. While the rats of oxygen pretreatment groups pre-breathed different pressure oxygen for 20 min before entering into chamber. The mortality and behavioral of rats were observed with 30 min post decompression. The dry/wet ratio of the lung, protein levels in the bronchoalveolar lavage fluid (BALF), and the inflammatory cytokine tumor necrosis factor (TNF-alpha) expression were also tested.

RESULTSCompared with that of the DCS group, the mortality and morbidity of oxygen pre-breathe groups didn't change obviously. But the total BALF protein level and the inflammatory cytokine TNF-alpha expression of 1 ATA oxygen pre-breathe group were obviously decreased, while the dry/wet ratio of lung as obviously increased instead (P < 0.05).

CONCLUSIONAlthough preoxygenation can' t obviously change the mortality and mobidity of rats, normal pressure oxygen pre-breathing can mitigate the protein infiltration in BALF and the expression of inflammatory cytokine in lung tissue.

Animals ; Bronchoalveolar Lavage Fluid ; chemistry ; Decompression Sickness ; Diving ; Lung ; pathology ; Oxygen ; physiology ; Pressure ; Rats ; Rats, Sprague-Dawley ; Tumor Necrosis Factor-alpha ; metabolism

Objective To study the expression of VEGF-C and its receptor in breast carcinoma tissue and in peritumoral tissue,as well as their clinic significance.Methods Immunohistochemistry SP method was used to examine the expression of VEGF-C and VEGFR3 in 70 cases of breast cancer and in its peritu- moral tissue.Results In all 70 cases of breast cancer,the positive expression rate of VEGF-C in breast car- cinoma tissue was 78.6 %,and its rate in peritumoral tissue was 54.3 %.There was a significant stastistic dif- ference between the two groups(P

It is first time to use dextren T-40 oxidative method to conjugate anti-gastric cancer mono-colonal antibody(McAb)with anti-tumor medicines of daunorubicin(DNR)and methotrexate(MTX)together.Cytotoxicity of conjugates was measured by MTT method and ~3H-TdR incor-poration method respectively.Both sensitivity is similar.The results have showed that this conju-gate exhibited selective cytotoxicity on human gastric cancer cells in vitro.

Objective: To discuss the clinical efficacy of modified Tongqiao Huoxuetang combined with ‘Huiyang Jiuzhen’ in treating post-stroke cognitive impairment (PSCI) and its mechanisms in resisting inflammation and oxidant stress and ameliorating hemorheology. Method: One hundred and twenty-two patients were randomly divided into control group (61 cases) and observation group (61 cases) by random number table. Both groups got Donepezil tablets, 10 mg/time, 1 time/day, and Nicergoline tablets, 20 mg/time, 3 times/days. Patients in control group got ‘Huiyang Jiuzhen’, 1 time/day, 6 times/week. In addition to the therapy in control group, patients in observation group got modified Tongqiao Huoxuetang, 1 dose/day. And a course of treatment was 8 weeks. Before treatment and at the 4^th week and 8^th week after treatment, scores of mini-mental state examination (MMSE) and Montreal cognitive assessment (MoCA) were discussed. And activity of daily living scale (ADL), syndrome of blood stasis and cerebral collaterals were graded. And levels of Interleukin-6 (IL-6) before and after treatment, C-reactive protein (CRP), tumor necrosis factor-α (TNF-α), oxidized low density lipoprotein (Ox-LDL), superoxide dismutase (SOD), malondialdehyde (MDA), hemorheology were detected. Result: According to the rank sum test, the clinical efficacy in observation group was better than that in control group (Z=1.976, P<0.05). At the 4^th week and 8^th week after treatment, score of MMSE and MoCA were higher than that in control group (P<0.05), and the extent of the rise were more than that in control group (P<0.05). And scores of ADL and syndrome of blood stasis and cerebral collaterals were lower than those in control group (P<0.01). Levels of IL-6, TNF-α, CRP, DA and Ox-LDL were lower than those in control group (P<0.01), and level of SOD was higher than that in control group (P<0.01). Levels of whole blood viscosity (high-cut, low-cut), plasma viscosity, erythrocyte aggregation index, platelet aggregation, fibrinogen and erythrocyte sedimentation rate (ESR) were lower than those in control group (P<0.01). Conclusion: In addition to the routine therapy of western medicine, modified Tongqiao Huoxuetang combined with ‘Huiyangjiuzhen’ can improve patients cognitive function and daily life ability, have effects in resisting inflammation and oxidation and ameliorating hemorheology, and can promote the recovery of cognitive function.

OBJECTIVETo observe the clinical efficacy difference between segmentation scraping and conventional acupuncture for cervical spondylosis (CS) so as to provide effective treatment method.

METHODSEighty-five cases of cervical type of CS were randomly divided into a scraping group (44 cases) and an acupuncture group (41 cases). The segmentation scraping therapy was used in the scraping group. The scraping group was treated with focusing on scraping the head and joint part of neck and occiput in the upper cervical spine injury, and focusing on scraping the lower section of cervical and shoulder in the lower cervical spine injury, once every seven days, totally for 3 times. In the acupuncture group, Fengchi (GB 20),Wangu (TE 5), Tianzhu (BL 10),Neck-Jiaji (EX-B 2), etc. were selected,once daily,for 15 days. The visual analogue scale (VAS) was used to evaluate the immediate analgesic effect after the first treatment and the clinical efficacy was observed after the end of treatment.

RESULTSAfter the first treatment, the score of VAS was decreased significantly in the scaping group (P < 0.01), but there was no significant difference in the acupuncture group compared with those before treatment (P > 0.05); the score of VAS in the scaping group after the first treatment was lower than that in the acupuncture group (3.66 +/- 0.74 vs 5.43 +/- 0.35, P < 0.01). Compared with before treatment, the scores of VAS were decreased significantly after treatment in two groups (both P < 0.01), but without significant difference between two groups (P > 0.05); the effective rate was 95.5% (42/44) in the scaping group and 87.8% (36/41) in the acupuncture group, the curative effects were similar (P > 0.05).

CONCLUSIONBoth of scraping and acupuncture therapies have good analgesic effect for cervical spondylosis, and overall effects are similar, but the immediate analgesic effect of scraping thrapy is better than that of conventional acupuncture.

Acupuncture Points ; Acupuncture Therapy ; Female ; Humans ; Male ; Medicine, Chinese Traditional ; Neck Pain ; therapy ; Spondylosis ; therapy ; Treatment Outcome