Objective Myelodysplastic spndrome (MDS) patients' chromosome aberrations were detected by CC and FISH method respectively,to establish standard FISH platform of diagnosis of MDS,to compare the differences of FISH and CC in the detection of MDS chromosome aberrations.Methods Chinese MDS patients fulfilled with the Vienna minimum diagnostic criteria were tested by CC and FISH method,and the patients' clinical data was collected at the same time.Results The standard FISH platform of diagnosis of MDS was established successfully,including probe combination of-5/5q-,+8,-7/7q-,20q-,-Y,the success rate was 100 ％.In 83 cases of MDS,chromosome aberrations rate detected by two methods was 42.2 ％,30.1％ of CC method and 33.7 ％ of FISH method,the accordant diagnostic rate was 76.1％.FISH had higher positive rate than CC method (29.6 ％ vs 18.6 ％,P =0.049) in the IPSS intermedian-risk 1 group,but lower positive rate in IPSS intermedian-risk 2 group (62.5 ％ vs 81.2 ％,P =0.036).There were 11 (19.0 ％) cases of clonal chromosome aberrations detected by FISH method but not detected by CC method,in which 10 (90.9 ％) cases were intermedian-risk 1 group (IPSS grouping).Evaluate IPSS by FISH and CC respectively,the accordant rate was 86.7 ％.Evaluate IPSS by CC alone will result in 3 patients (3.6 ％)decline in risk stratification,and evaluate IPSS by FISH alone will result in 8 patients (9.6 ％) decline in risk stratification.There were 35 (42.2 ％) cases of chromosome aberrations detected by the two methods,including 13 (15.7 ％) cases of complex karyotype and 22 (26.5 ％) cases of single abnormal karyotype.The most common chromosomal aberration was +8,a total of 9 (10.8 ％) cases,followed by abnormalities of chromosome 7,a total of 7 (8.4 ％) cases.Conclusion The study has established standard FISH platform of diagnosis of MDS,the method is stable,sensitive and rapid.FISH technology joint CC technology can improve the patients with MDS chromosome aberration detection rate.Compared to CC,FISH technique can improve the detection rate of the intermedian-risk 1 IPSS grouping MDS patients.Because of limited probe,FISH technique can not entirely replace the role of CC method in MDS,but can complement each other.

Objective To investigate whether the signaling pathway of Akt/protein kinase B (PKB)is involved in the pathogenesis in the early stage of chronic allograft nephropathy(CAN). Methods The kidneys of Fisher(F344)rats were orthotopically transplanted into Lewis recipients. Animals were harvested respectively at 4th,8th,12th and 16th week after transplantation for renal function and histological examination.The expression of p-Akt and MMP-9 was detected by immuno- histochemical assay,and that expression of p-Akt mRNA by RT-PCR.Results At the 16th week after kidney transplantation,the levels of 24-h proteinuria and serum creatinine in transplant rats were higher significantly than those in LEW controls and F344 controls.The expression of p-Akt protein and mRNA was up-regulated,and there was a significantly negative correlation between the expression of p-Akt and the quantity of smooth muscular cells(SMCs)in arteriolar wall,the quality of tubuloin- terstitial infiltrated mononuclear cells and also MMP-9 level.Conclusion The up-regulation of p-Akt played an important role in the pathogenesis such as proliferation and migration of SMCs,infiltrated mononuclear cells in tubulointerstitial in CAN,and may be the signaling pathway leading to the up- regulation of MMP-9 expression in the early stage of CAN.

Objective:To detect the expression levels of neuropilin1 (NRP1)mRNA and miR-9 in non-small cell lung cancer (NSCLC)tissue samples, and to explore the correlations between the expressions of NRP1 mRNA, miR-9 and the clinicopathological characteristics of the patients with NSCLC.Methods:Informed consent was obtained from each patient before surgery.The tissue samples including 45 NSCLC tissue ,45 adjacent carcinoma tissue and 45 normal lung tissue were collected from China-Japan Union Hospital of Jilin University from 2010 to 2011.qRT-PCR was used to detect the expression levels of NRP1 mRNA and miR-9 in three kinds of lung tissue, and the correlation between the expressions of NRP1 mRNA, miR-9 and clinicopathological characteristics of the patients with NSCLC was analyzed.Results:Compared with normal tissue,the expression level of NRP1 mRNA in adjacent carcinoma tissue had no change (P>0.05),but the expression level of NRP1 mRNA in non-small cell lung cancer tissue was significantly decreased (P<0.05).Compared with normal tissue,the expression level of miR-9 in adjacent carcinoma tissue had no change (P>0.05),but the expression level of miR-9 in non-small cell lung cancer tissue was significantly increased (P < 0.05 ). Furthermore, in adjacent carcinoma tissue, the expression level of miR-9 in the males was lower than that in the females (P<0.05 ). In NSCLC tissue, the expression level of NRP1 mRNA had no relationship with sex,age,differentiation degree,TNM stage and clinical stage,but was significantly correlated to the histological subtype and lymph node metastasis (P<0.05).In NSCLC tissue,the expression level of miR-9 had no relationship with age, pathological type, lymph node metastasis, differentiation degree,TNM stage,and clinical stage (P>0.05),but was correlated to the sex (P<0.05). Conclusion:The expression level of miR-9 is up-regulated and the expression level of NRP1 mRNA is down-regulated significantly in non-small cell lung cancer tissue. The detection of the expression level of NRP1 mRNA contributes to j udge the histological subtype and lymph node metastasis of NSCLC.

Sptrx-1, 2 and 3 are a series of thioredoxins specifically expressed in the testis/sperm. They play a significant role structurally and functionally in the process of spermiogenesis. The genesis and mutation of sptrx-1, 2 and 3 are correlated to male reproduction. Taking sptrx-1, 2 and 3 as the target of study and treatment will open up a new field in the clinical study of male reproduction.
Humans ; Male ; Mutation ; Spermatogenesis ; genetics ; physiology ; Spermatozoa ; chemistry ; cytology ; metabolism ; Testis ; chemistry ; cytology ; metabolism ; Thioredoxins ; biosynthesis ; genetics ; physiology

OBJECTIVETo provide anatomic evidence for identification of "holy plane" between fascia propria and its adjacent fascia in total mesorectal excision.

METHODSA total of 26 pelvic specimens of adult male preserved in 10% formalin solution were used in this study. Twenty pelvis were employed for topographic anatomy, six for sectional anatomy.

RESULTSRectovesical septum was formed by the ventral part of the fascia propria and Denonvilliers' fascia, with no blood vessel and nerve coursed between two layers. Dorsal part of the fascia propria parallelled with the presacral fascia, with no blood vessel and nerve coursed between two layers in 80% of the pelvis. However, anatomic variations was encountered occasionally--with muscle-like tissue or fusion of presacral fascia interposed between them for 20%. The lateral space of rectum was between lateral part of the fascia propria and parietal fascia which witnessed pelvic nerve plexus and lateral ligament of the rectum traveling. Pelvic nerve plexus was categorized as two types according the relation between fascia propria and nerve plexus: fusion type accounting for 85% and rarefaction type for 15%.

CONCLUSION'holy plane' is sandwiched between the fascia propria and its adjacent fascia--ventrally Denonvilliers fascia, dorsally presacral fascia and laterally parietal fascia.

Adult ; Autopsy ; Fascia ; anatomy & histology ; Fasciotomy ; Humans ; Male ; Rectum ; anatomy & histology ; surgery

The production of sperm is a very complicated and orderly process, which involves the proliferation and differentiation of cells. The in vitro culture of spermatogenic cells includes tissue culture and cell culture. This study focuses on the advances in the in vitro culture of spermatogenic cells, testicular tissue culture and their culture conditions, and sums up the advantages and disadvantages of various culture methods, in an attempt to find the best method for differentiating spermatogenic cells in vitro and make the culture of spermatogenic cells an important means of treating male infertility.
Animals ; Cell Count ; Cell Culture Techniques ; Cell Survival ; Cells, Cultured ; Germ Cells ; Humans ; Male ; Spermatozoa ; cytology ; Testis ; cytology

Objective To investigate the protective effects of intravitreal injection of pigment epithelial-derived factor (PEDF) gene-modified human umbilical cord mesenchymal stem cells (PEDF-MSCs) on the pathological changes in retinal tissue of diabetic rats.Methods hUCMSCs were isolated from human umbilical cord tissue using tissue culture methods,and transfected with lentiviral vectors at a infection multiplicity of 50.Then diabetic model in rats was successfully induced by intraperitoneal injection of streptozotocin.And the rats were divided into normal control (N),PBS treatment (D1),hUCMSCs treatment (D2) and PEDF-MSC treatment (D3) group according to different treatment methods.Three months after modeling,treatment began in D1,D2 and D3 group,but N group left untreated.Two weeks after treatment,the expression of PEDF-MSCs in the eye of rats was detected by fluorescence microscopy,and HE staining was performed to observe the changes in retinal structure and the full-thickness of the retina in each group.Results The expression of CD105,CD73,CD90 was observed,while the expression of CD34,CD45,CD11b,CD19 and HLA-DR did not present.After 2 weeks of treatment,it was in the vitreous cavity not the retina that clusters of red fluorescence appeared in D2 group with fluorescence microscope.There were clusters of green fluorescence in the vitreous cavity not in the retina of D3 group.HE staining showed that the retina had intact structure and clear layers as well as neatly arranged and stained evenly cells in N group.In D1 group,the nerve fibers layer (NFL) showed obvious edema,the blood vessels were dilated,the inner plexiform layer (IPL) were loose and the inner nuclear layer (INL) cells were disordered.In D2 group,the edema of NFL relieved.In D3 group,NFL edema was significantly alleviated,and the cells of INL and outer nuclear layer (ONL) arranged in regular.Full-thickness of retina was (103.82 ±4.15) μm in N group,(138.86 ±4.71) μm in D1 group,(131.17 ±3.89) μm in D2 group,and (112.24 ±4.22) μm in D3 group,respectively,and the differences were statistically significant (all P ＜ 0.05).Conclusion PEDF-MSCs can survive and continue to express in the vitreous cavity of diabetic rats for a long time.Meanwhile,intravitreal injection of PEDF-MSCs can ameliorate retinal edema and the retinal injury in diabetic rats.

The development of printing ink is a challenge for binder jetting 3D printed preparations, which directly determines the quality of the printed product. This study adopted a 2³ full-factor Design of Experiment (DoE) with three central points to optimize the printing ink composition of levetiracetam 3D printed dispersible tablet based on the concept of Quality by Design. Firstly, using polyvinyl pyrrolidone K30, glycerin and polysorbate 20 as independent variables based on 40% (v/v) isopropanol aqueous solution, and weight variation, hardness, friability and dispersion uniformity of the printed tablets were used as dependent variables. Then obtained the design space of the printing ink prescription by DoE model analysis, and the response optimizer was used to obtain the optimal printing ink prescription: isopropanol aqueous solution containing 0.1% (w/w) polyvinyl pyrrolidone K30 and 4.0% (w/w) glycerin. The jetting mechanism and wettability of the printing ink were analyzed, and different strengths of personalized 3D printed tablets were prepared and characterized, which verified the rationality of the printing ink formulation. This study provided a reference for the development of printing ink for binder jetting 3D printed preparations.

Objective To compare oral lavage and traditional oral nursing method in coma patients with tracheotomy regarding their clinical effects.Methods 600 coma patients with tracheotomy suffering from pulmonary infection and/or oral complications were randomly divided into control group ( n =300 ) and observation group (n =300).The observation group was administered with gauze balls and oral lavage; the control group was nursed with the traditional method.The clinical effects of both groups with respect to oral stench,swollen bleeding gums,oral ulcers,pulmonary infections were compared.Results The improvement rate of oral stench,swollen bleeding gums,oral ulcers and pulmonary infections in the observation group surpassed that in the control group (P ＜ 0.05).Conclusions Gauze balls and oral lavage in coma patients with tracheotomy is superior to the traditional method with respect with clinical effects,therefore it has clinical significance to some extent.

OBJECTIVETo observe the effect of pcDNA3.1-Egr.1p-p16 plasmid on apoptosis and cell cycle of pancreatic carcinoma JF305 cell line.

METHODSJF305 cells were cultured and transfected with pcDNA3.1-Egr.1p-p16 plasmid via Lipofectamine(TM) 2000, followed by irradiation by 6MV-X at 4 Gy (dose rate 2.50 Gy/min). The cell cycle and cell apoptosis changes were analyzed by flow cytometry.

RESULTSIn cells infected with pcDNA3.1-Egr.1p-p16 plasmid and those with pcDNA3.1-Egr.1p-p16 plasmid infection before 4 Gy irradiation, the percentages of viable apoptotic cells were 6.4% and 10.4%, and those of advanced stage apoptotic or dead cells were 16.8% and 33.8%, significantly higher than those in the control group (P<0.05). JF305 cell apoptosis in 4 Gy irradiation group was obviously increased in comparison with non-irradiated plasmid-infected cells (P<0.05). Irradiation resulted in a predominant G(2) arrest of the plasmid-infected JF305 cells. Both pcDNA3.1-p16 plasmid and pcDNA3.1-Egr.1p-p16 plasmid infections could induce G1 arrest of JF-305 cells, and irradiation did not produce significant changes in G(1)-arrested cells in the two plasmid infection groups, but cells arresting at G(2) phase increased.

CONCLUSIONpcDNA3.1-Egr.1p-p16 can induce JF-305 cells apoptosis, which is enhanced by irradiation. pcDNA3.1-Egr.1p-p16 tranfection may result in G(1) arrest of the cells, and when combined with irradiation, the cells arrested at G(2) phase can increase.

Animals ; Apoptosis ; genetics ; radiation effects ; Cell Cycle ; genetics ; radiation effects ; Cell Line, Tumor ; Genes, p16 ; Genetic Therapy ; Humans ; Plasmids ; genetics ; Radiation Dosage ; Radiotherapy ; Time Factors ; Transfection