Objective To report a rare case of M3r subtype of acute promyelocytic leukemia (APL)with 3'-end of RARα (3'RARα) submicroscopic deletion, and the characters of morphologic, cytogenetic,molecular genetic and molecular biology studies. Methods Chromosomes of bone marrow (BM) cells were prepared with direct method and short-term culture method, and R-banding technique was used for karyotypic analysis. Fluorescence in situ hybridization (FISH) assays were performed on fixed BM cells using the following specific DNA probes: CEP X/Y alpha satellite DNA probe, LSI PML-RARα dual-color dual-fusion and LSI RARα dual-color break apart probes. A quantitative real-time reverse-transcription polymerase chain reaction (RT-PCR) was performed to detect the PML-RARα transcript. A multiplex nested RT-PCR was also performed, which may simultaneously detect the fusion genes derived from 29 chromosomal aberrations in acute leukemia including PML-RARα, PLZF-RARα and NPM-RARα fusion transcripts. Results R-banding analysis revealed a karyotype of 45,X,-Y[6]/46,XY[8], FISH using CEP X/Y probe further confirmed Y-chromosome loss. FISH analysis with RARα dual-color break apart probe demonstrated a deletion of the entire 3'-end of one allele of RARα gene. Cytogenetic, FISH and RT-PCR analyses showed no PML-RARα,PLZF-RARα, NPM-RARα, NuMA-RARα and STAT5b-RARα rearrangements. Conclusion A new RARαrearrangement involving 3'RARα submicroscopic deletion in APL without X-RARα fusion has been identified.FISH analysis with RARα dual-color break apart probe is a useful method for characterization of this abnormality, but its molecular consequences remain to be elucidated.

Objective To discuss two simulation studies on the closed and open peritoneum in abdomenal operations. Meth-ods We selected 120 domestic female rabbits from animal laboratory of Qi Qi Ha’er Medical College at random and divided them into four groups(according to whether the peritoneum was open or not,the degree of peritoneum defect at the right side of incision and the existence of peritoneum hemorrhagic focus ),with 30 cases in each group. Group Ⅰ: no peritoneum suture and making a defect of 4cm?3cm at the right side of the incision; Group Ⅱ: no peritoneum suture and making a defect of 4cm?3cm at the right side of the incision,with a hemorrhagic focus at peritoneum defect;Group Ⅲ: with peritoneum suture; Group Ⅳ:with dense and compact peritoneum suture.And then we analyzed postoperative peritoneum healing progress. Results Observeations of the incision infection by the naked eye were that one case was identified in group Ⅰ,Ⅲ and Ⅳ;and a significant difference of occurrence rate was identified between the fallowing groups: groupⅠandⅡ(P

Objective To investigate the effects of breviscapine injection on intestinal mucosal barrier damage induced by intestine ischemia-reperfusion (IIR). Methods 44 old SD rats were randomly divided into four groups:sham,intestine ischemia-reperfusion(IIR),EB+IIR,LN+IIR. Breviscapine injection 20 mg/(kg·d) was given intraperitoneally in EB+IIR group. L-NAME(100 mg/kg)was given intravenously 30 min before surgery in LN+IIR group. Rats were subjected to superior mesenteric artery occlusion consisting of 45 min of ischemia and 4 h of reperfusion;sham laparotomy served as controls. Intestine pathology was assayed by H&E staining. Concen-trations of SIgA,iNOS,eNOS and NO in intestinal mucosa,also endotoxine in plasma,were determined by ELI-SA. Results IIR induced serious intestinal mechanical and immune barrier damage ,evidenced as poor intestine pathology,depression of intestinal SIgA and eNOS levels,elevation of intestinal iNOS/NO levels. However,brevis-capine injection pretreatment could promote eNOS/NO production ,down-regulated iNOS expression ,leading to ele-vating SIgA concentration in intestine ,attenuate endotoxemia induced by IIR. The protection was canceled when application of L-NAME. Conclusion Breviscapine pretreatment attenuates ischemia-reperfusion-induced intestinal mucosal barrier damage via promoting eNOS/NO production.

Objective To investigate the effect of Heat shock protein 70 induced by hypoxic precondition on apoptosis of the remnant livers after the hepatectomy of transplanted hepatic cancer models in SD rants and it's possible mechanisms.Methods Sixty SD rats of transplanted hepatic cancer models were divided into group A (sham operation group),group B (IR + hepatectomy group),and group C (hypoxia precondition + IR + hepatectomy group),with 20 rats in each group.C group was given 10％ oxygen atmosphere for 90 minutes before operation,In 15 minutes of hepatic vascular occlusion with pringle method,Left lateral of liver which tumor was located was resected.At 1,8,12,24 hours after operation,Five rats of each group were killed respectively,then the remnant liver tissues were sampled to measured the hepatocytes apoptosis rate with flow cytometry,expression of heat shock protein 70 (HSP70) and Bax were detected by Western blotting.The serum AST and ALT activities were measured by an automatic analyzer.The histological changes of the hepatocytes were also observed by optical microscopy.All the data were statistically analyzed.Results (1) Compared with A and B group,the HSP70 expression increased obviously in C group at each time point (all P ＜ 0.05).The protein showed a weak expression in group A and B group,while the index had no significant differences between two groups (P ＞ 0.05).(2) In B group compared with A group,the expression of Bax and the hepatocytes apoptosis rate were significantly increased (all P ＜ 0.01 or P ＜0.05).However,amplitudes of the above changes in C group were significantly lower than those of B group (all P ＜ 0.05).(3)The liver function was improved in group HP.The pathological examination showed that the liver tissues in A group were general normal and in C group were showed mild changes,but in B group presented evident pathological changes.Conclusions HP can protect against ischemia-reperfusion injury after the hepatectomy of transplanted hepatic cancer models in SD rants,one of possible mechanisms is that HP can induce HSP70 expression at great intensity,which may decrease expression of Bax protein and the apoptosis of hepatocytes.

Objective To investigate the protective effect of hydrogen-rich water (HRW) on radiation-induced hematopoietic stem and progenitor cells (HSPCs) injury.Methods Totally 32 C57BL/6 mice were randomly divided into four groups with 8 mice in each group,including control,HRW,radiation and radiation + HRW.Mice in HRW and radiation + HRW groups received 0.5 ml hydrogen-rich water per day by intragastric administration 5 min before irradiation until 7 d post-irradiation.Mice in other groups received 0.5 ml distilled water.Mice in radiation and radiation + HRW group were irradiated with 2 Gy of total body irradiation.Bone marrow cells were isolated at 15 d post-irradiation,and LSK cells were examined for the percentage of hematopoietic stem and progenitor cells,the ability of colony formation and reconstitution,reactive oxygen species (ROS) levels and cell apoptosis.Results Compared with radiation group,the percentages of hematopoietic progenitor cells and LSK cells,colony number of bone marrow cells were significantly increased in radiation + HRW group (t =-4.935,-7.898,5.488,P ＜ 0.05).An elevation of donor chimerism was also found in recipient mice administered HRW after competitive bone marrow transplantation (t =-12.769,P ＜ 0.05).Compared with radiation group,the ROS levels and cell apoptosis in LSK cells were significantly decreased (t =4.380,3.954,P ＜ 0.05).Conclusions Hydrogen-rich water exhibited a protective effect on radiation-induced HSPCs injury.

Objective To analyze the clinical features of 385 postoperative thyroid nodules patients,and to compare the correlation affected by different factors between benign and malignant thyroid nodules.Methods Total 385 patients underwent thyroid operation in general surgery department of our hospital were enrolled.Their clinical data,ultrasonic scanning of thyroid,and pathological results were compared between benign and malignant thyroid nodules.Results (1)264 cases with benign nodules (68.57％) and 121 cases with malignant nodules (31.43 ％)were found among 385 cases.The average age of benign group was (48.1 ± 13.4) years old,while malignant nodules group was (45.6 ± 12.5) years old.(2) No gender difference was found between benign and malignant nodules group (P＞0.05).(3) According to body mass index (BMI),the highest prevalence of malignant nodules was in overweight group,followed by obesity group.(4) Fasting blood glucose was (5.61 ± 1.07) mmol/L in benign group and (5.86±1.21) mmol/L in malignant group(P＜0.05).(5) Thyroid-stimulating hormone (TSH) in benign nodules group was (1.62 ± 1.30) mIU/L,while in malignant nodules group,which was (2.02 ±2.59) mIU/L(P＜0.05).(6) Irregular shape,unclear boundary,calcification,and lymph node metastasis were more frequent in malignant group than those in benign group under ultrasonic scanning (P＜0.05).(7) Logistic regression analysis revealed that the existence of thyroid cancer was significantly associated with age,fasting blood glucose,ultrasonic images(lymph node metastasis,irregular shape,and calcification).Conclusion (1) Fasting blood glucose levels and TSH in the malignant nodules group are higher than those in the benign group.(2) A negative correlation exists between age and thyroid cancer prevalence.(3) Ultrasonic images,including lymph node metastasis,irregular nodule shape,and calcification,may suggest the high possibility of thyroid cancer.

Objective To explore the changes of alveolar morphology and alveolar epithelial cells in rats with hyperoxia-induced chronic lung diseases (CLD). Methods CLD model in neonatal rats was established by inhalation of high concentration oxygen(85%～90% ). Eighty neonatal rats were randomly exposed to hyperoxia (model group) and to room air (control group) (n =40 each). Radical alveolar counts and the alveolar septum thickness were used to evaluate alveolar development. The site and intensity of expression of SPC,AQP5 protein were detected by immunohistochemical staining,the dynamic expression of SPC mRNA,AQP5mRNA was detected by RT-PCR on day 1,3,7,14 and 21 after exposure. Results There were no significant differences about alveolar wall thickness and RAC between experimental groups and control group on day 1～3 ( P > 0. 05 ). But there was significant difference between the model group and the control groups on day 7 and 14 (P <0. 01 ). For model group,alveolar septum thickness peaked on day 21, the difference was significant compared with control group ( 10. 62±5.01 vs 3.62±0. 88, P < 0. 001 ), but RAC decreased to the lowest level, the difference was significant compared with control group ( 3.57±1.24 vs 10. 47±0. 88,P <0. 001 ). The expression of SPC decreased on day 3 manifestedly but increased on day 7 and the levels of SPC were higher than that in the control group. Experimental group showed gradual decrease in AQP5 expression as the lung impairment devastated. Conclusion Alveolar development was delayed and alveolar epithelial cell (AEC) was damaged in the neonatal CLD rats. The changes of SPC,AQP5 expression suggested AECI was severely damaged and failed in full recovery, meanwhile the quantity of AEC Ⅱ was increased but the ability of its differentiation and transformation was decreased.

Objective To evaluate the effects on the mineral bone disorder using different calcium concentration citrate-based dialysate in maintenance hemodialysis (MHD) patients.To compare the concentrations of intact parathyroid hormone(PTH) with biointact PTH(1-84) in these patients.Methods Citrate dialysate with different calcium concentration (DCa 1.75,DCa 1.5,DCa 1.25 mmol/L)were used in turn in 15 stable MHD patients each week.Serum tCa and iCa were measured by automatic biochemistry analyzer.The concentrations of iPTH and bio-iPTH were compared.Results (1) The patients treated with DCa 1.75 citrate dialysate had increased serum iCa and tCa after dialysis,and PTH did not change significantly as compared to those findings before the dialysis.With the DCa 1.5 citrate dialysate,serum iCa and tCa were kept stable and PTH level was increased.With DCa 1.25 citrate dialysate,serum iCa and tCa decreased significantly and PTH decreased.(2)iPTH and bioPTH had excellent correlations.Variation of bio-iPTH was more correlated with the changes of calcium than iPTH.Conclusions Serum levels of iPTH,tCa and iCa can be kept stable in MHD patients treated with DCa 1.75 ～ 1.5 citrate dialysate.Bio-iPTH is a more sensitive marker for mineral bone disease than iPTH.

Radiotherapy is one of major cancer treatment methods.However,radiation resistance is an important reason to restrict the efficacy of radiotherapy and lead to treatment failure.In recent years,the relationship between the canonical Wnt signaling pathway and tumor radiation resistance has more and more attention of the scholars.This review summarized recent ten years findings concerning the canonical Wnt signaling pathway and tumor radiation resistance and tried to find some valuable rules or some internal relationships among different pathways by systemically analyzing.

Objective To observe the protective effect of anthocyanin on irradiation induced bone marrow c-kit positive cell injury, and further explore its possible mechanism. Methods Mouse bone marrow c-kit positive cells were collected by cell sorting method. There were 2 groups: control group and anthocyanin group, which were sub-divided into three groups and received 0 Gy, 1 Gy and 4 Gy irradiation respectively. The control group was added 700μL cell suspension and an equal volume of serum-free hematopoietic stem/progenitor cell culture medium. The 2 × 10-5 mol/L anthocyanin was co-cultured with mouse bone marrow c-kit positive cells of anthocyanin group half an hour before irradiation exposure, then cells were cultured for 18 hours under the conventional culture conditions (37℃,5%CO2). Mouse c-kit positive cell viability was measured by bioluminescence, and which was reflected by relative light units (RLU). The ability of colony-forming units was reflected by CFU-GM. The reactive oxygen species (ROS) level and mean fluorescence intensity (MFI) ofγ-H2AX were detected by flow cytometry. Results Compared to un-irradiated control group, the cell viability and the number of CFU-GM were decreased significantly, while the ROS level and MFI ofγ-H2AX were increased in c-kit positive cells irradiated with 1 Gy and 4 Gy (P<0.05). Compared to 1 Gy and 4 Gy irradiation groups, c-kit positive cell viability and the number of CFU-GM were increased, the ROS level and MFI of γ-H2AX were decreased in anthocyanin group (P < 0.05). Conclusion Anthocyanin exhibits a promising protective effect on radiation-induced bone marrow c-kit positive cell injury, which may be related to the alleviating ROS and DNA damage in bone marrow cells.