Acupuncture Analgesia ; Animals ; Central Nervous System ; metabolism ; Electroacupuncture ; Nitric Oxide ; metabolism ; Pain Threshold ; physiology ; Rats ; Rats, Wistar

Seven crystalline compounds have been isolated from the soft coral Nephthea Bayer collected from the South China Sea, four of them have been identified to be 24-methyl-cholesta-5,24 (28 )-diene-3B, 7B,19-triol (1) , 24-methylcholesta-5, 24 (28)-diene-3B,19-diol (2), 24-methylcholesta-5,24(28)-diol-3B-ol (3) and l-octadecyl-2,3-dihydroxypropyl ether (4), respectively based on their data of IR, MS, 1HNMR and 13CNMR.

Objective To explore the selection and clinical effects of internal or external drainage for upper urinary tract obstruction complicated with acute renal failure.Methods A total of 25 cases of upper urinary tract obstruction complicated with acute renal failure were treated with double J(DJ) tube internal drainage(12 cases,15 times) or percutaneous nephrectomy(PCN) external drainage(19 cases,23 times).15 cases of obstruction were induced by tumor and 10 cases of obstruction induced by benign disease.Results The drainage treatments were performed successfully in 23 cases,with the success rate of PCN and DJ drainage being 86.9%(20/23) and 60.0%(9/15),respectively.Postoperative bleeding occurred in 1 patient with PCN.Conclusions PCN is superior to DJ in the treatment of malignant obstruction,but DJ internal drainage may be the first choice for non-malignant obstruction.

The discovery of circulating fetal DNA paves a new way for non-invasive prenatal diagnosis. Examining the specific fetal DNA sequence of the circulating fetal DNA has been used for prenatal diagnosis of sex-linked disorders, fetal rhesus D blood typing and single gene inheritance disease. The variation of the circulating DNA levels can also be used for diagnosis of preeclampsia, premature delivery, and fetal chromosome disorders. This paper aims to review the biochemistry characters and clinical application of the circulating fetal DNA in maternal peripheral plasma.

Objective:To study the effects of dexamethasone,cyclophosphamide,cyclosporin A and mycophenolate mofetil on the expression of Dectin-1 and TLR2 receptor in RAW264.7 cell line.Methods:In vitro culturing RAW264.7 macrophages ,the cells were given different doses of dexamethasone and cyclophosphamide ,cyclosporin A and mycophenolate mofetilfor 24 h.The influence of different immunosuppresants on cell proliferation was detected by CCK-8 assay.Dectin-1,TLR2 mRNA and protein levels of change were detected with RT-PCR technique and flow cytometry .Results:CCK-8 cell proliferation toxicity experiment results showed that with the increase of the dose of dexamethasone ,cyclophosphamide ,Cyclosporin A and mycophenolate mofetil ,the different degree of inhibi-tion of RAW264.7 cell proliferation in mice can be saw after the intervention of 24 h (P<0.05).After 24 h of dexamethasone stimula-tion,Dectin-1 mRNA and protein level decreased,TLR2 mRNA and protein levels elevated (P<0.05).However cyclophosphamide had no obvious influence on Dectin-1 and TLR2 ( P>0.05 ) .Mycophenolate mofetil and cyclosporin A could both inhibit the expression of Dectin-1 and TLR2 (P<0.05).Conclusion:There are significant differences among the regulatory functions of various immunosupres -sants on the expression of pattern recognition receptors .Different immunosuppressive agents exert their inhibitory effects on immune rec-ognition process of fungal pathogens not only by selectively regulating their target PRRs expression ,but also by inhibiting the growth and proliferation of macrophages .

Objective To investigate the demands and problems of the sharing and construc-tion of teaching resources in medical universities. Method A self-designed questionnaire named The questionnaire of the present situation and demand of teaching resources sharing platforms in medical universities in China was used to conducted in all the attainders during a national teaching resources meeting, and SPSS 17.0 was used to analyze the data. Results Among 125 valid questionnaires, 117 people (93.6%) think it's necessary to establish the resources sharing platform, what's more 108 people (86.4%) believe that education resources sharing platform is very helpful for teaching, and multimedia materials, online courses, course wares, teaching cases, website of subject resources and other educa-tion resources should be widely shared. Our investigation has involved 48 medical universities from all over the country, in which 33 medical universities have teaching resources sharing platform. However, 20 (60.6%) of the universities have still not updated the content on time. There are 10 main factors which influence the using of the education resource sharing platform, in which 105 (84%) of them have con-sidered the factor as backward concepts, 91 (72.8%) think that there exist problems in resource con-struction mechanism, 76 (60.8%) think to be the standardized and universal problems. Conclusion It is necessary to build the education resource sharing platform. In all, we should change the traditional education concept and consciousness, strengthen mechanism of management, and exploit high quality education resource to improve the sharing level of education resource in medical universities.

Small molecule covalent inhibitors, or called as irreversible inhibitors, are a type of inhibitors that exert their biological functions by irreversibly binding to target through covalent bonds. Compared with non-covalent inhibitors, covalent inhibitors have obvious advantages in bioactivity. Nevertheless, these agents may also exhibit larger toxicity once off-target effects arise. This "double-edged swords" property often leads drug researchers to avoid attaching them. In recent years, some problems such as drug resistance are difficult to be solved with reversible inhibitors leading researchers to pay more attention on the covalent inhibitors. In this review, we shall make a short summary to the recent research progress of covalent inhibitors and the interaction modes between covalent inhibitors and their target protein residues.
Amino Acids ; chemistry ; Antineoplastic Agents ; chemical synthesis ; chemistry ; therapeutic use ; Antiviral Agents ; chemical synthesis ; chemistry ; therapeutic use ; Drug Discovery ; Drug Resistance ; Enzyme Inhibitors ; chemical synthesis ; chemistry ; therapeutic use ; Hepatitis C ; drug therapy ; Humans ; Molecular Structure ; Neoplasms ; drug therapy ; Protein Binding ; Protein Kinase Inhibitors ; chemical synthesis ; chemistry ; therapeutic use ; Receptor, Epidermal Growth Factor ; antagonists & inhibitors ; Serine Proteinase Inhibitors ; chemical synthesis ; chemistry ; therapeutic use

Objective To explore the inhibiting effects of arsenic trioxide and cisplatin on MG-63 cells. Methods Using MTT assay,flowcytometry,phase contrast microscopy and electron microscopy methods,the therapeutic effect of arsenic trioxide was studied for the osteosarcoma in the cultured MG-63 cells in vitro,and compared these effects with cisplatin. The inhibitory rotes of cell growth and the effect of apoptosis and cell cycle were compared between arsenic trioxide and cisplatin on MG-63 cells. Results The contrast phase microscope revealed the adhesion ability of normal groups was good and cellular morphology showed epithelium cells. But the celhdar morphology showed irregular arrangement in arsenic trioxide groups and cytoplasmic vacuoles in cisplatin group. Electron microscope revealed the globular plasmalemma ecphymas in cell surface of control groups,the enlarged crista mitochondriales and the double-deck membrane structure appeared clearly. But electron microscope revealed globular plasmalemma processes in cell surface of arsenic trioxide groups,thinned crista mitochondriales and clearly seen karyopycnosis and nuclear membrane of apoptotic cells. The globular plasmalemma processes in cell surface of cisplatin groups were separated,nuclear membrane thickened and chromatin were in sandy shape. Both arsenic trioxide and cisplatin inhibited effectively MG-63 cells growth. There was a significant difference in different groups of inhibition ratios to the growth of cells(all P < 0.05). In 2,4,8,16,32,64,128 hours,the inhibition ratios(%) of arsenic trioxide(56.31±0.03,70.00±0.06,79.84±0.03,87.31±0.13,84.70±0.09,90.68±0.06,91.18±0.05) and cisplatin groups(7.55±0.15,15.70±0.17,30.72±0.07,49.80±0.05,45.11± 0.13,61.62±0.08,93.80±0.12) were obviously increased as compared with those in the control group(2.03± 0.07,2.78±0.08,3.11±0.01,5.67±0.04,12.23±0.04,18.65±0.04,24.45±0.04,all P < 0.05). Moreover the inhibition ratio of arsenic trioxide group in 2 to 32 hour was significantly higher than that of cisplatin group and the effect was more faster(all P < 0.05). Both arsenic trioxide and cisplatin could induce apoptosis MG-63 cells. There was a significant difference in different groups of the inhibition ratio to the growth of cells(F = 13.317,P < 0.05). The inhibition ratios(%) of arsenic trioxide on 24,36,48 hour(20.50±3.78,45.76±9.90,25.16±15.41),and cisplatin groups on 24,36,48 hour(12.55±1.51,18.85±3.40,12.37±5.43),were obviously increased as compared with those in the control group at the same time(6.57±1.48,8.03±2.08,6.54±1.30,P< 0.05 or<0.01). Both arsenic trioxide and cisplatin inhibited MG-63 cells cycle. There was a significant difference in different groups of the inhibition ratio to the growth of cells(F = 54.579,43.429,21.795,P < 0.05 or < 0.01). And the total inhibition ratios(%) in G1 cycle of arsenic trioxide(78.26±5.24) and cisplatin groups(80.48±2.81) were obviously increased as compared with those in the control group(57.49±6.65,all P < 0.05 or < 0.01). Conclusions Arsenic trioxide and cisplatin can effectively inhibit the proliferation of MG-63 cell line and induce the apoptosis of MG-63 cell line. And the effects induced by arsenic trioxide group were faster than that of cisplatin groups. Moreover arsenic trioxide can arrest the cell cycle of MG-63 cell line at G1 phase.

Objective To evaluate the imaging features of patients with vascular cognitive impairment (VCI) induced by Subcortical Ischemic Vascular Disease (SIVD), through magnetic resonance diffusion tensor imaging ( DTI ) and proton spectroscopy ( MRS ) technology. Methods A total of 52 patients with SIVD were enrolled. After analysis of scale score, 32 patients with cognitive impairment were assigned to VCI group and 20 patients with no cognitive impairment were assigned to control group. Both group received DTI and MRS examination. The mean values of apparent diffusion coefficient (ADC) and fractional anisotropy (FA) of the bilateral temporal, frontal, parietal and occipital white matter regions as well as in the bilateral centrum semiovale were calculated. The peak value of MRS of N-acetyl aspartate (NAA) , choline ( Cho), creatine (Cr) and phaseomannite ( mI ) were calculated. Results Compared with control group, FA decreased in the region of temporal, frontal, parietal as well as in the centrum semiovale , and ADC increased in VC[group ( P ＜ 0.05 ) . In the frontal regions and centrum semiovale,the VCI patients had a significant FA decrease. The ADC value increased obviously in the temperal lobe.Spectrum analysis results showed, NAA/Cr was lower than control group in VCI group in the frontal lobe (1.43 ±0.08 vs 1.53 ± 0. 92), while mI/Cr was higher than control group in the temporal lobe(0. 51 ±0. 06 vs 0. 46 ± 0. 07 ) ( P ＜ 0. 05 ). Conclusion FA in the temporal and centrum semiovale regions of VCI group and NAA in the temporal white matter regions decreased obviously. DTI and MRS could provide a reference value for early diagnosis and assessment of VCI.

Objective To discuss the reason of pain on the shoulders and epigastrium after the reprotenal laparoscopic operations. Methods One hundred and eight patients had undergone the laparoscopic adrenalectomy or laparoscopie renal cyst unroofing. They were divided into two groups at random, group A and group B. In group A, discharged CO2 as soon as finished the operation, but did not in group B. At the same period, there were 49 patients who had received retroperitoneal laparoscopic radical nephrectomy, divided into two groups by the CO2-pheunopertomeum time, group C and group D. In the group D, the CO2-pheunopertomeum time was over 90 minutes, and the time was less than 90 minutes in the group C. Evaluated the pain degree through the vision analogue score (VAS) and recorded the pH,PaO2, PaCO2,BE in the arterial blood in group A and B before and after operation. Results The incidence rate of pain postoperation was significantly higher in group B than A (P < 0.05). In group A and group B, there was no difference in PaCO2, PaO2, pH, BE in the arterial blood(P > 0.05 ). The incidence rate of pain and the grade of VSA both were significantly higher in group D than group C (P < 0.05). Conclusions The stimuli of acid materials such as carbonate that derived from postoperative residual CO2 is probably the main cause of the pain on the shoulders and epigastrium after the laparoscopicsurgery.