Myelodysplastic syndromes (MDS) is one of clonal disorders of hematopoietic stem cells.Cytogenetic,molecular genetic and epigenetic aberrances are critical to diagnosis,prognosis and treatment of MDS.5q-,-7/7q-and 20q-are the most frequent cytogenetic aberrance in MDS.Fusion genes,genetic mutation and deletion are the most important mechanisms for every subtype of MDS.Aberrant methylation plays an essential role in both initial and secondary MDS.All these aberrances are very significant for the development and transformation of MDS.Genetic and epigenetic alterations are new targets for MDS diagnosis and treatment.

ObjectiveTo evaluate oncoplastic techniques on breast conservative surgery.MethodsClinical data of 50 breast cancer patients who received oncoplastic breast conservative surgery from October 2009 to August 2011 were retrospectively analyzed.The indication,methods,outcome and morbility of oncoplastic surgery were assessed. ResultsAll patients had solitary tumors.Twelve patients received neoadjuvant therapy and thirty-eight received upfront surgical therapy.Different oncoplastic surgery techniques were applied based on the location of tumor.There were 20 tumors located in upper outer quadrant receiving lateral radial or horizontal excision; Four lower inner and seven lower outer tumors received V and J shape excision respectively; Three low pole and seven upper pole tumors received inverted T and batwing excision respectively; Six tumors located periareolar area and three tumors located retroareolar area were removed using round block and J shape excision.Two patients experienced postoperative hematoma and three patients had incisional dehiscence followed by secondary infection. Another developed skin ischemia and necrosis. Thirty-five patients have finished the postoperative adjuvant radiotherapy. The appearances of the breasts were satisfactory in all patients except one having deviation of nipple and two patients suffering from dimpling in incisional region.Patients gave high scores about their breast appearance.After 4- 27 months follow-up,two patients had local recurrence and received mastectomy.Other patients were free of recurrence.ConclusionsBreast oncoplastic surgery technique benefits those whose tumors located in special area of the breast resulting in a satisfactory cosmetical appearance of the breast.

Objective To investigate the significance of routine exposure of recurrent laryngeal nerve (RLN)in thyroidectomy.Methods The data of consecutive 232 patients with thyroidectomies during 2009-2010 were retrospectively reviewed.All operations,either lobectomy or total thyroidectomy were performed by the same surgeons.The RLN was identified routinely during the operation.Results Totally 280 RLNs were exposed in 181 thyroid lobectomies and 51 total thyroidectomies(98.9%).Ten patients experienced post-operative hoarseness(3.6%).Seven patients were diagnosed with paralysed vocal cord post-operatively,although the RLN were identified intact during the surgeries,and their voice became normal in 2 months.Another 3 patients'RLNs were transected injured and re-anastomosed during the same procedures and their voice became normal in 4 months.Conclusions Exposing the recurrent laryngeal nerve in the thyroidectomy is an effective way to prevent permanent injury to RLN.

Objective To establish an inductively coupled plasma‐mass spectrometry (ICP‐MS) method for analysis of elements in peripheral blood of children .Methods A total of 474 healthy children in Hunan area were enrolled in this study ,and six ele‐ments ,including Ca ,Mg ,Fe ,Cu ,Zn and Pb ,in peripheral blood specimens were detected by using ICP‐MS method .Results The levels of elements ,including Ca ,Mg ,Fe ,Cu ,Zn and Pb ,in peripheral blood of healthy children showed skewed distributions ,and no significant differences were found in levels of these elements between male and female children(P>0 .05) .The reference intervals of Ca ,Mg ,Fe ,Cu ,Zn and Pb in peripheral blood of healthy children in this area were 57 .30 -81 .40 mg/L ,30 .40 -44 .80 mg/L , 361 .20-531 .40 mg/L ,848 .10-1 469 .20 μg/L ,2 .68 -6 .54 mg/L and 0 .00 -100 .00 μg/L respectively .Conclusion The ICP‐MS method for simultaneously detecting Ca ,Mg ,Fe ,Cu ,Zn and Pb in peripheral blood of children and reference interval of each ele‐ment are successfully established .

Objective:To investigate the effect and mechanism of total flavonoids of Hedysarum polybotry on induction of differentiation in human leukemia HL-60 cells. Method After the treatment of HL-60 cells with total flavonoids of Hedysarum polybotry, the cell differentiation was detected with NBT reduction method. Cell cycle, CD11b and C-fos were analysed by the flow cytometry. Result The positive rate of NBT reduction and the expression of CD11b were significantly increased. Similar, the expression of C-fos gene was upregulated. The growth of HL-60 cells was arrested at G0/G1 and G2/M phase. Conclusion Total flavonoids of Hedysarum polybotry could induce differentiation of HL-60 cells. Its molecular mechanism might be related to the modulation of gene expressions associated with the proliferation and differentiation, which leads to the inhibition of DNA synthesis.

Objective To establish the basis of molecular systematics of Angelica from different areas of Gansu province so as to offer molecular basis of identification Gansu-produced Angelica with geoherbalism. Methods The ITS gene of Angelica was obtained by PCR and sequenced to be analyzed by DNAStar software to calculate the genetic distance among different specimens. Results The ITS sequence of Angelica between Min County and Zhang County of Gansu Province shows trivial differences with the range of 0.000 0～0.008 3. All 5 Min County-produced Angelica specimens have same bases at 586 site with "C" and 589 site with "T" with Zhang County-produced Angelica DG9 specimen, whereas the 586 site and 589 site bases of the other 3 Zhang County-produced Angelica specimens are "T" and "G" respectively. Conclusion The ITS sequence characteristics can be recognized as effective molecular marker of Angelica, and both 586 site base and 589 site base of the ITS sequence of Angelica can be recognized as identification bases of Min County-produced Angelica.

Objective To observe the effects of Jiuxieling granules on rats with ulcerative colitis and explore its mechanism.Methods Ulcerative colitis models were established by immune method combined with local stimulation of 5% acetic acid.Wistar rats were randomly divided into control,model,positive control and low,middle,high dose Jiuxieling granules group.Rats in positive control group were treated with sulfasalazine,and those in three treatment groups were treated with low,middle and high dosage of Jiuxieling granules respectively for 14 days continuously.24 hours after last administration,the rats were killed to obtain colon mucous membrane to test GSH-Px,SOD,MDA,NO,tNOS and iNOS concentration of the homogenate of colon mucous membrane.Results Jiuxieling granules could markedly improve the levels of GSH-Px and SOD activity,whereas decrease the levels of MDA,NO,TNOS and iNOS.Conclusion Jiuxieling granules exert its marked curative effects on rats of ulcerative colonitis by resisting oxygen free radical lesion,inhibiting the generation of NO and NOS,and enhancing the activity of antioxidase.

Objective To investigate the protective effect of the extract of Vaccinium Bracteatum Thunb(VBT) leaves against light injury of retina.Methods 20 Newzealand rabbits were divided into 4 groups: the normal control group,modelⅠgroup,modelⅡ group,and model Ⅲ group.The normal control group ate and drank freely.modelⅠgroup ate and drank freely but took in 50g/(kg?d) fresh VBT leaves daily for 4 weeks.model Ⅱgroup ate and drank freely,but took in 50g/(kg?d) old VBT leaves daily for 4 weeks.model Ⅲ group ate freely,but took in 50mg/(kg?d) extract of VBT leaves(resolved in water) daily for 4 weeks.All rabbits were exposed to strong light,meanwhile, the retinas were analyzed by electroretinogram(ERG) every week.Finally,all the rabbits were killed and the content of MDA and SOD in the retina were detected.Results In the control group,the latency time of the B wave increased and the amplitude of the B wave shortened,while in the model Ⅰ,Ⅱ and Ⅲ groups,the changes of B wave just opposite.The content of MDA in the model Ⅰ,Ⅱ,and Ⅲ groups was lower than that in the control group(P

Three compounds were isolated from the extract of Taxus cuspidta Sibe et Zucc with the column chromatography on silica gel and preparative HPLC methods. Their structures were identified according to the physicochemical properties and spectral analysis, and they were identified as (E)-1-methoxy-2-O-(p-coumaroyl)-myo-inositol (1), 2-deacetoxy-7beta, 9a, 10beta-trideacetyltaxinine J (2) and (3aS, 4aR, 6S, 8S, 8aS, 9R, 10R, 10aS)-benz[f]azulene-6, 8, 9, 10 (3H)-terol, 3a, 4, 4a, 5, 6, 7, 8, 8a, 9, 10-decahydro-10a-(1-hydroxyl-1-methylethyl)-1, 8a-dimethyl-5-methylene (3). Among them, compound 1 was a new compound, and compounds 2, 3 were two novel natural products.

Objective To evaluate the validity and reliability of multi-slice spiral CT (MSCT) in preoperative TNM staging judgment of rectal carcinoma. Methods Three hundred and one patients with rectal carcinoma were diagnosed and treated consecutively in Colorectal and Anal Surgery Department of Shanxi Province Tumor Hospital from January 2009 to December 2009. The clinical data of these patients were analyzed retrospectively. The diagnosis results were compared between the preoperative MSCT staging and the postoperative pathological staging,the ROC curve and the diagnostic concordance test were analyzed by software Medcalc 11.2. Results The sensitivity, specificity, Kappa value, area under the curve of TNM staging were 64.7% ,96. 8% ,0. 667,0. 808 for T2 staging tumors; 93.8% ,75.0% ,0.709,0.844 for T3 staging tumors;87. 8% ,98. 1% ,0. 859,0. 929 for T4 staging tumors; 72. 0% ,91.2% ,0. 619,0. 816 for N staging tumors;92. 7%, 99. 7%, 0. 925,0. 963 for M staging tumors respectively. Conclusion The diagnostic value of independent use of MSCT in estimating the infiltration degree and lymph node metastasis of rectal cancer is very poor and cannot be used in preoperative staging judgment.