1.Advances in drug treatment of acromegaly
Chinese Journal of Biochemical Pharmaceutics 2015;(11):185-188
Acromegaly is mostly caused by a pituitary adenoma secreting growth hormone ( GH ) , which leads to a wide range of endocrine morbidities, with an insidious onset and slow progression.A long-term overproduction of GH results in elevated insulin-like growth factor-1 ( IGF-1 ) level, which in turn, would cause target organ damage and an increased risk for mortality and decreased quality of life.Herein, the literature regarding the progress of drug therapy for acromegaly in recent five years is reviewed.
2.Design studies and discussions of online blood volume monitoring system in hemodialysis patient data information management
Liping ZHAO ; Feihong ZHANG ; Yi ZHOU
China Medical Equipment 2014;(3):25-28
Objective: According to the relevant principles of blood volume monitoring and monitoring methods, to apply online monitoring data information management in the blood volume monitoring for hemodialysis patients. Methods:through the relevant technical form and its function of monitoring data to study and analyze of treatment parameters of hemodialysis patients described in online blood volume monitor, to achieve data analyzed by using information management system. Results: the blood volume can be visually monitored during the hemodialysis to understand changes in the blood volume of hemodialysis patients, it helps to avoid the occurrence of hypotension and evaluation of patients with dry weights during the hemodialysis. The data can be downloaded, exported, and edited at the same the while fully access to treatment data by effective using of blood volume monitoring data management system (BVMS), in order to achieve data analyzed by using information management system. Conclusion:by understanding the correlation betweenΔBV and blood pressure screen composition can help to speculate the reasons for drop in blood pressure;by combining the examination data can help to control dry weight management, by fully accessing to data can help to manage hemodialysis patient data information management system, and according to patients expression and display of blood volume monitoring to determine the appropriate amount of ultrafiltration, adjust dry weight and develop an appropriate treatment plan.
3.Effects of CP154526,the corticotropin releasing hormone receptor 1 antagonist,on rat hippocampal neuron apoptosis
Chinese Pharmacological Bulletin 2015;(4):504-508,509
Aim To investigate the effects of CP1 54526,a corticotropin releasing hormone (CRH) receptor 1 antagonist,on the hippocampal neuron ap-optosis.Methods Rat hippocampal neurons were primarily cultured.Cell viability was estimated using MTT assays.Neurons were randomly divided into four groups:Normal cultures (Control);CRH-exposed cul-tures (CRH);CRH and CP1 54526 co-exposed cul-tures (CRH + CP ); CP1 54526-exposed cultures (CP).Cell apoptosis was examined by TUNEL or flow cytometry Annexin Ⅴ-PI staining.The protein levels of Bax,Bcl-2 and Caspase-3 were investigated by West-ern Blotting.Results 1 0 -8 mol·L -1 CRH decreased cell viability of cultured hippocampal neuron (P <0.05),while 50 mmol ·L -1 CP1 54526 significantly increased neuron viability (P <0.05).Compared with Control group,cell apoptotic rate,the ratio of Bax and Bcl-2 and the protein level of Caspase-3 were elevated in hippocampal neuron induced by CRH.Combined with CP1 54526 reversed the effects of CRH.Applica-tion of CP1 54526 alone had no obvious effects on cell apoptosis.Conclusions A certain concentration of CRH can induce hippocampal neuron apoptosis,and its receptor 1 antagonist CP1 54526 can effectively re-duce the apoptosis and play a neuroprotective role.
4.International Situation of and Considerations on Acupuncture
Biao GONG ; Li ZHOU ; Yi ZHANG
Chinese Journal of Medical Education Research 2002;0(01):-
The Chinese acupuncture doesn't only belong to China but rather to the world.The boom of overseas acupuncture education and scientific research as well as the satisfactory working environment compels us to reflect the Chinese traditional medicine education in our country.Especially in higher education specialty courses of acupuncture should not be subdivided;meanwhile,much attention should be paid to elementary education of western medicine.
5.Investigation on Pollution Status of Centralized Air Conditioning-Ventilating Systems in Five-Star Grade Hotels in Beijing
Yi ZHANG ; Yumin LIU ; Baohui ZHOU
Journal of Environment and Health 1992;0(04):-
Objective To investigate the actual pollution status of heating-ventilating-air conditioning(HVAC) systems in five-star grade hotels in Beijing. Methods Seven sets of centralized HVAC system from five five-star grade hotels in Beijing were selected for sampling monitoring and videotaping in situ from August 2003 to October 2003. Results There were six sets HVAC systems seriously polluted and one set was in moderately polluted according collected dust weight. The total counts of bacteria in the dust were in medium pollution grade in four sets of HVAC systems; The total quantity of fungus in the dust were in medium pollution grade in five sets of HVAC systems; The video materials showed that inside the air duct there were fungus, construction rubbish and deposit of large quantity of dust. Conclusion The HVAC systems of those five hotels were seriously polluted.
6.The coupling of tibial rotation and extension-flexion motion of knee joint
Yixin ZHOU ; Yi JIANG ; Hong ZHANG
Chinese Journal of Orthopaedics 1998;0(12):-
Objective To investigate the coupling of tibial rotation and extension-flexion motion of knee joint both before and after total knee arthroplasty. Methods Six fresh-frozen left lower limbs from cadavers were tested using a modified Oxford motor rig for the knee joint. Anatomically based multiple loadings of the quadriceps mechanism were applied (Vastus medialis: 24.5 N, Vastus intermedius/rectus femoris: 29.4 N, Vastus lateralis: 19.6 N). The tibial rotation was tracked using a custom-made laser tracking device while the tibial-femoral flexion was measured with goniometer. Total knee arthroplasty (TKA) was performed using ?PFC-PS posterior cruciate ligament substituting knee system. Results Before TKA, when the knee flexed 10?, 20?, 30?, 60?, 90?, 120? and 150?, tibia rotated 5.1??2.3?, 9.3??3.3?, 10.2??4.8?,11.7??3.5?, 13.5??8.4?, 22.0??8.6? and 29.6??9.3? respectively. After TKA, tibia rotated -2.2??1.7?, -2.5??1.5?, -2.0??1.3?, 1.7??2.5?, 3.9??2.4?, 13.5??6.1? and 18.6??4.7? respectively (Tibial rotation was defined as 0? in knee extension; internal rotation as positive and external rotation as negative). Conclusion The tibial internal rotation is coincident with tibial-femoral flexion, its magnitude of tibial rotation varies in different degrees of knee flexion. The tibial internal rotatation is significant in early knee flexion(0? to 30?), then enters into a platform stage on knee bending from 30? to 90?, Once the knee bends over 90?, the tibia rotates internally markedly again, maximum internal rotation is achieved in fully flexion, probably due to relaxation of soft tissue. After TKA, in early flexion (0? to 30?) the external rotation occurs abnormally, but later on 30? to 150?, it rotates again intenally as normal.
7.Determination of Contents of Hydrochloric Stachydrine in the Shenning Granule by TLC-scanning Method
Yi LUO ; Hong ZHANG ; Benhong ZHOU
China Pharmacy 2001;0(08):-
OBJECTIVE:To determine the contents of hydrochloric stachydrine in the shenning granule by TLC-scanning Method.METHODS:The acetone-dehydrated alcohol-HCl(10∶6∶1)were used as developing agents,the potassium hep-taiodobismuthate test solution-1%trichloride ferric dehydrated alchhol solution(2∶1)were used as the color-developing a-gents,the detection wavelength was530nm,the reference wavelength was670nm,the slit size was0.4mm?0.4mm,the lin-earization parameter Sx=3.RESULTS:The spot peak area score assumed a satisfactory linear relationship when the electric sample size for the hydrochloric stachydrine at a range of2.412?g~6.432?g(r=0.9972),the recovery was98.93%(RSD=1.15%).CONCLUSION:This method is simple,accurate,and this determination method has a good reproducibility,which can be used for the quality control of the shenning granule.
8.Expression of Vascular Endothelial Growth Factor in Patients With Acute Myocardial Infarction
Yi ZHANG ; Shushan QI ; Shenghua ZHOU
Journal of Chinese Physician 2001;0(03):-
Objective To investigate the clinical significance of vascular endothelial growth factor (VEGF) levels in the serum of patients with acute myocardial infarction (AMI),and also to explore the relationship between VEGF and creatine kinase (CK) levels in AMI.Methods 25 patients with AMI and 12 controls were used for this study. Serum was isolated from peripheral blood on day 1, 5, 10 and15 after the onset of AMI. VEGF levels were measured by enzyme-linked immunosorbant assay (ELISA).Results Serum VEGF levels elevated gradually after the onset of AMI and reached a peak on day 10, which was significantly higher than that of control group (178 9?48 9)pg/ml vs(64 9?16 7)pg/ml,P
9.Experimental Study of the Neointimal of Balloon-injured Rabbit Carotid Arteries
Yi ZHANG ; Shushan QI ; Shenghua ZHOU
Journal of Chinese Physician 2001;0(02):-
Objective To observe the dynamic change of the intimal proliferation in balloon-injured rabbit carotid arteries to explore the mechanism of restenosis. Methods 40 healthy male New Zealand white rabbits were randomly divided into experiment groupsⅠ、Ⅱ、Ⅲ and control group, each group containing 10 rabbits. Right carotid artery was injured with PTCA balloon in the experiment groups. 10 rabbits in each experiment group were killed on 1, 2 and 4 weeks after injury. Morphological change of injured intimae was examined by light microscope and analyzed using a computerized imaging analysis system. Results In experiment group, neointimal areas were significantly more than those in control group(P
10.Inhibitory Effect of Chenodeoxycholic Acid-verticinone Ester on Tumor Growth of H22-bearing Mice
Qing ZHOU ; Jiuliang ZHANG ; Yi WANG
Herald of Medicine 2015;(4):467-470
Objective To evaluate the antitumor effects of chenodeoxycholic acid-verticinone ester ( CDCA-Ver ) on tumor growth and immune system of H22-bearing mice. Methods Antitumor activity against a solid tumor mass was evaluated in Kunming mice. H22 cells were transferred into the abdomen cavity of Kunming mice. H22 cells were inoculated through subcutaneous injection at the right armpit of the mouse to establish a solid tumor model. At 24 h after H22 tumor cells inoculation, 40 tumor-bearing Kunming mice were randomly divided into 4 groups according to random number table ( n=10 each group):model control group, cyclophosphamide ( CTX) group, intraperitoneal CDCA-Ver injection group and intravenous CDCA-Ver injection group. In model control group, sterile 0. 9% sodium chloride solution (10 mL·kg-1 ) was intraperitoneally injected once daily. In CTX group and intraperitoneal CDCA-Ver injection group, CTX (20 mg·kg-1 ) and CDCA-Ver (20 mg·kg-1 ) was intraperitoneally injected once daily, respectively. In intravenous CDCA-Ver injection group, CDCA-Ver ( 20 mg · kg-1 ) was injected through tail vein once daily. CDCA-Ver, CTX and NS were injected into the mice of the experimental groups once daily for 10 days, respectively. The dose volume was 0. 1 mL · ( 10 g )-1 body weight. The positive control drug was cyclophosphamide. Ten mice were treated with 20 mg · kg-1 CDCA-Ver through intravenous injection ( i. v. ) . Ten mice were treated with 20 mg·kg-1 CDCA-Ver through intraperitoneal injection. The thymus and spleen indices and the tumor inhibition rate were assessed, and histopathological examination with haematoxylin and eosin ( H&E) staining was carried out to evaluate the antitumor effects of CDCA-Ver. Results CDCA-Ver ( ivor ip) suppressed the growth of solid tumor in H22-bearing mice. The inhibition rate was 48. 3% at the dose of 20 mg·kg-1 CDCA-Ver (ip). There was no significant difference between CDCA-Ver (ip) and CTX treated group (P<0. 05). Compared with the control, the weight of thymus and spleen of CDCA-Ver (ip) treated group was not obviously changed. But a significant weight loss of thymus and spleen in CTX group was observed, which was attributed to the immune suppression from CTX. The thymus and spleen indices in the CTX-treated mice were significantly lower than those of the control group (P<0. 01). We further conducted histopathological examination to confirm the results. The immune system was not suppressed by CDCA-Ver ( ip ) in tumor-bearing animals. The low toxicity of CDCA-Ver was an outstanding advantage for the development of newly anticancer drug. Conclusion CDCA-Ver treatment can significantly inhibit tumor growth in mice.