Abstract?AlM: To study the number of myogenin - positive activated satellite cells in the inferior oblique muscles and the medial muscles of V- pattern exotropia with inferior oblique overaction, to further explore the possible etiological factors of V-pattern exotropia with inferior oblique overaction.? METHODS: The inferior oblique muscles and the medial muscles were cut from V - pattern exotropia patients with inferior oblique overaction during strabismus operation treated as the strabismus group. Cross sections were stained immunohistochemically for the presence of activated satellite cells, as identified by myogenin immunoreactivity. The inferior oblique muscles and the medial muscles were obtained from the corneal transplant donors ( six eyes of six cases) , which treated as the control group.? RESULTS: The frequency of myogenin - positive satellite cells of the inferior oblique muscles was (22. 7± 7.03)% and (4. 2±0. 75)% in the strabismus group and the control group. Significant differences existed in the expression of myogenin in two groups (P<0. 05). Again, the frequency of myogenin-positive satellite cells of the medial muscles was (2. 2±0. 75)% and (4. 5±1. 05)% in the strabismus group and the control group. Significant differences also existed in the expression of myogenin in two groups (P<0. 05).?CONCLUSlON: lt is first report that myogenin-positive satellite cells presents in extraocular muscles of V -pattern exotropia with inferior oblique overaction. The current results suggest that myogenin is one of possible etiological factors of V-pattern exotropia with inferior oblique overaction.

Background:Vitamin D receptor( VDR)is a member of the steroid hormone receptor superfamily,which plays roles in various biological processes including cell proliferation,differentiation,apoptosis and immune responses,and is low expressed in many malignant tumors. Aims:To evaluate the expression and regulation mechanism of VDR in colorectal cancer. Methods:A total of 30 patients with colorectal cancer admitted from February 2010 to December 2012 at Ren Ji Hospital,School of Medicine,Shanghai Jiao Tong University were enrolled. Expression of VDR in cancerous tissue and para-cancer noncancerous tissue was determined by immunohistochemistry. Clinical data of 224 patients with colorectal cancer were collected from Gene Expression Omnibus( GEO)for analyzing the correlation between VDR expression in cancerous tissue and clinicopathological characteristics as well as survival time. Expression of VDR in human colon cancer cell lines HCT116 and SW620 transfected with enhancer of zeste homolog 2( EZH2 )-siRNA or treated with 5-azacytidine (5-AZA)was determined by real-time PCR,and methylation level of VDR promoter was determined by methylation-specific PCR( MSP). Results:Positivity rate of VDR was significantly lower in colorectal cancer tissue than that in para-cancer noncancerous tissue( 26. 7% vs. 70. 0%,P < 0. 001 ). Expression of VDR was negatively correlated with histological staging,distant metastasis,vascular metastasis and lymph node metastasis of colorectal cancer(P<0. 05). Survival time was significantly longer in patients with high expression of VDR than patients with low expression of VDR (P=0. 032). Compared with cells transfected with control-siRNA,expression of EZH2 mRNA and methylation level of VDR promoter in HCT116 and SW620 cells transfected with EZH2-siRNA were significantly decreased(P<0. 05),and expression of VDR mRNA was significantly increased(P<0. 05). Compared with negative control group,methylation level of VDR promoter in HCT116 and SW620 cells treated with 5-AZA was significantly decreased(P<0. 05),and expression of VDR mRNA was significantly increased(P<0. 05). Conclusions:Expression of VDR in colorectal cancer is down-regulated and positively correlated with a favourable prognosis. Transcriptional repression of VDR in colorectal cancer is co-regulated by histone methylation and DNA methylation.

Objective To investigate the in vitro effects of human bone marrow derived mesenchymal stem cells (hBMSC) on Th17 cells of the human peripheral blood.Methods The density gradient centrifugation combined with lymphocyte separation medium was used to isolate hBMSC,which were then cultured.Cytokine IL-17 in the peripheral blood from a healthy person was measured by enzyme-linked immunosorbent assay (ELISA).Proportion of Th17 cells was evaluated by flow cytometry.Results The expression level of IL-17 in spent culture supernatant of the healthy person PBMC and AML hBMSC was (292.32±37.25) pg/ml,and was significantly higher than that of the healthy person PBMC and healthy hBMSC [(169.64±17.47) pg/ml,P ＜ 0.01].There was no significant difference between the expression level of IL-17 in spent culture supernatant of the healthy person PBMC and ALL hBMSC [(159.89±23.71) pg/ml] and the level of the healthy person PBMC and hBMSC.The percentages of Th17 cells of co-culture systems from hBMSC,ALL-hBMSC,and AML-hBMSC and PBMC were (10.13±2.19) ％,(13.77±4.04) ％ and (21.53±5.05) ％,respectively,with the result between AML patients and healthy people being statistically different (P ＜ 0.01).ALL patients and healthy people showed no difference (P ＞ 0.05).Conclusion AML-hBMSC promotes the CD~ T cells to generate Th17 cells,which suggests that the MSC from AML marrow may play a role in the regulation of immune suppression.

Objective To investigate the therapeutic effects of arsenic trioxide(ATO) plus vitamin K2(VK2) on proliferation of HL-60 cells from acute promyelocytic leukemia cell line and explore the possible mechanism.Methods ①HL-60 cells were exposed to ATO(0.0,0.5,1.0,2.0,4.0 μmol/L),VK2(0.0,2.5,5.0,10.0,20.0μmol/L),or both of different concentrations (0.5 μmol/L ATO + 2.5 μmol/L VK2,1.0 μmol/L ATO + 5.0μmol/L VK2,2.0 μmol/L ATO + 10.0 μmol/L VK2,4.0 μmol/L ATO + 20.0 μmol/L VK2) for 24,48 or 72 h,respectively.The method of CCK-8 was used to assess the proliferation of HL-60 cells and the half inhibitory concentration(IC50) of ATO or VK2 was calculated,respectively.②Combination index (CI) was used to evaluate the combinative effect of the two treatments:CI ＜ 1,=1 or ＞ 1 indicated synergistic,additive,or antagonistic effect,respectively.③After HL-60 cells were treated with 1.0 μmol/L ATO or 5.0 μmol/L VK2 individually or simultaneously for 48 h,Annnexin V/PI staining was performed to identify the apoptosis rate of each group.Untreated cells were used as control group.Results ①ATO or VK2 alone inhibited the proliferation of HL-60 cells in a concentration and time dependent manner.The IC50 of ATO or VK2 at time of 24,48,72 h were (22.86 ± 2.44),(6.66 ± 0.34),(4.14 ± 0.41) and (18.40 ± 1.12),(13.48 ± 0.73),(8.95 ± 0.40) μmol/L,respectively; ②The combination of ATO and VK2 illustrated a synergistic effect with CI ＜ 1.③No statistical difference was found among control group [(4.38 ± 0.56)％],1.0 μmol/L ATO group [(5.76 ± 1.63)％] and 5.0 μmol/L VK2 group [(6.38 ± 1.42)％] in the apoptosis rate(all P ＞ 0.05).However,the apoptosis rate of combined group did rise to (44.18 ± 8.42)％,with a significant improvement to that of VK2 or ATO group alone (all P ＜ 0.01).Conclusions The combination of VK2 and ATO exhibits an enhanced synergistical inhibitive effect on proliferation of HL-60 cells,and apoptosis may be involved in this synergy in part.

Objective To establish a method of gas chromatography with head-space sampling for determination of five residual solvents ( acetone, ethyl acetate, isopropanol, dichloromethane, acetonitrile ) in raw material drug of cefotiam hexetil hydrochloride. Methods Agilent DB-624 capillary column(30 m×0.53 mm,3.0 μm)was used,with FID served as detector and DMF as the solvent. Results Linear relationships were obtained for the 5 residual solvents in their respective concentration ranges ( r=0.999 6-0.999 9,n=5) ,and the detection range was from 0.071 to 0.847μg. The stabilities measured as relative standard deviations ( RSD) for the 5 residual solvents were from 0.40% to 2.12% ( n=3) . The average recovery rates were 99.03% to 103.33%,and RSD were 0.54% to 3.41% ( n=3) . Conclusion The method is simple,sensitive and accurate for the residual solvent analysis in raw material drug of cefotiam hexetil hydrochloride.

According to the multi-information characteristic of pulse tracings in traditional Chinese medicine(TCM) and the dynamic analysis and identification technique of sonogram,the multi-information detection system of pulse examination was constructed by combining B-type ultrasound and flexible transducer.It made information integration of supersonic dynamic image,pressure pulse wave,photoelectric capacity pulse wave and electrocardiogram,and though the aggregate analysis of computer information processing technique,established the pulse tracings signature analysis method,formed optimized solving scheme for describing the four attributes("location,velocity,shape and potential") of pulse examination in TCM.From the multi-information data of healthy people's pulse tracings collected by this system,it can be infer that the new method of objectification of pulse examination referred in this article is feasible,and have gain the prospective effect.It provides a new method and characteristic data for the clinical study of objectification of pulse examination and teaching of TCM.

OBJECTIVE To find out fulminate epidemiological features of Stenotrophomonas maltophilia in ICU and the ways to prevent and treat this nosocomial infection.METHODS The case histories from 4 inpatients who developed S.maltophilia infection in the same ward from Feb 5 to 16,2006,were studied retrospectively to find out the reasons of its onset and its treatment based on the sputum culture results.RESULTS The fulminate S.maltophilia was found from the rail of the patient bed,the connection part of water container of 2 respiratory machines of exhalation valve assembly and the liquid of ultrasonic aeriation machine.CONCLUSIONS The infection is a localized one.The main reasons of the infection are unthorough disinfection of respiratory machine and the contamination of medical treatment environment.Whenever the infection is found in the ward,the thorough disinfection needs immediately,and no new patient admitted.

This study was aimed to explore the effect of homoharringtonine in combination with AG490 on JAK2-STAT5 associated signal pathway in HEL cells, and analyze its mechanism so as to provide theoretical basis for therapy of chronic myeloproliferative neoplasma by new program. The cell survival rates were tested by MTT, apoptosis was tested by flow cytometry after HEL cells were treated by 20 ng/ml HHT, 100 µmol/L AG490 and 20 ng/ml HHT in combination with 100 µmol/L AG490, while the signal proteins such as P-JAK2, P-STAT5 and BCL-xL activated by abnormal activated JAK2 were tested by Western blot. The results showed that both HHT and AG490 could inhabit the HEL cell proliferation after being treated for 24 hours, and Annexin V-PI double staining confirmed early apoptosis while HHT effect was more obvious, Western blot showed that the expressions of P-JAK2 and P-STAT5 were down-regulated, while the total protein levels of JAK2 and STAT5 were stable. It is concluded that HHT combined with AG490 can obviously inhibit the proliferation and induce early apoptosis of HEL cells, and there is synergistic effect between the two drugs. HHT possibly acts as a broad-spectrum PTK inhibitor and synergistically with AG490 inhibits the phosphorylation of signal proteins caused by JAK2V617F, thus down-regulating the transcription of STAT5.
Cell Line, Tumor ; Harringtonines ; pharmacology ; Humans ; Janus Kinase 2 ; metabolism ; STAT5 Transcription Factor ; metabolism ; Signal Transduction ; drug effects ; Tyrphostins ; pharmacology

The five-flavor theory of traditional Chinese medicines (TCM) and the flavor efficacy generation mechanism has long been focuses and difficulties in studies on traditional Chinese medicinal properties. In this paper, by using the pharmacophore-based virtual screening technique, the authors discussed the relations between the pungent property and transient receptor potential vanilloid 1 (TRPV1) by studying the TCM components' role in regulating TRPV1 ion channel. The results showed that the matching relationship between TRPV1 agonist pharmacophore model and TCM chemical components could identify the active ingredients from pungent herbs. Therefore, the authors proposed that TRPV1 is one of the potential targets for efficient pungent herbs. The pungent property of TCMs is decided by its chemical components, and consistent with the inherited and additive characteristics.
Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans ; Smell ; TRPV Cation Channels ; antagonists & inhibitors ; metabolism ; Taste

ObjectiveTo explore the character of cognitive potential P300 in major depressive disorder ( MDD ) patients between with and without family history and compare the cognitive function between them.MethodsSixty-seven MDD patients with family history and sixty-seven MDD patients without family history were assigned to research group,sixty-seven healthy volunteers were assigned to control group,and ERP P300 detections were conducted in all subjects.Results①To compare with control group ( ( 189.33 ± 51.13 ) ms) and MDD without family history group( ( 193.55 ± 40.01 )ms),the N2 latency was prolonged more significantly in MDD with family history group ( ( 208.40 ± 33.05 ) ms ) (P ＜ 0.05 ).②Compared with control group ( ( 3.38 ± 5.52 ) μV ),the N2 amplitude was decreased more significantly in MDD without ( ( 2.47 ± 1.87 ) μV ) and with family history ( ( 2.36 ± 2.10) μV ),(P ＜ 0.05 ).ConclusionThere is an obvious cognitive function damaged in the MDD patients with and without family history and the MDD patients with family history are more serious.