OBJECTIVE: To study the expression of Endophilin II and VEGF-C in human Laryngeal cancer and its relationship with the clinical treatment effect. METHOD: The expression and distribution of Endophilin II and VEGF-C protein were checked in 47 patients with laryngeal carcinoma in our hospital in 2006-09-2009-10 and 23 samples of normal tissues around the cancer by immunohistochemical staining SP method. After an appropriate surgical treatment, patients accepted a 5-year followup to evaluate their recurrence situation and 5-year survival rate. RESULT: Immunohistochemistry showed that Endophilin II protein was strongly positive expressed in normal tissues around the cancer (positive rate 82.61%). And the expression level was dependent on the lymph metastasis, T stage and lymph invasion (P < 0.05). Patients with positive Endophilin II expression had a higher survival rate and better recurrence situation. Expression of VEGF-C was significantly higher in laryngeal carcinoma than in normal tissue around the cancer (positive rate 51.06% and 13.04%). the expression level was dependent on the lymph metastasis and lymph invasion (P < 0.05), and negatively correlated with recurrence and 5-year survival rate. CONCLUSION Endophilin II and VEGF-C may involve in laryngeal cancer, and the expression of Endophilin II and VEGF-C has a positive correlation with pathological features and lymph metastasis, and both are related with recurrence and 5-year survival rate. So these two proteins are likely to be a potential target for diagnosis and treatment of laryngeal cancer.
Humans ; Immunohistochemistry ; Intracellular Signaling Peptides and Proteins ; metabolism ; Laryngeal Neoplasms ; metabolism ; pathology ; Lymphatic Metastasis ; Neoplasm Recurrence, Local ; Survival Rate ; Vascular Endothelial Growth Factor C ; metabolism

Objective To explore the clinicopathological features of IgA nephrolpathy associated with malignant hypertension (IgAN-MHT) and to analyze their correlation with renal vascular lesions. Methods Twenty-nine patients of IgAN-MHT were screened from 2000 biopsy-proven eases with primary IgA nephropathy (IgAN) in our department from April 1997 to May 2007. Data of clinicopathology and follow-up of these 29 patients were collected. Semi- quantitative analysis was performed to evaluate the pathological changes. Inner lumen, outer lumen, intimal thickness, tunica media-to-internal lumen ratio of 436 arterioles, 124 interlobular arteries and 5 arcuate arteries were measured. The primary endpeint was the composite of a doubling of serum creatinine level and ESRD. Correlations of renal vascular lesions with clinical manifestation, pathological change and prognosis were examined by Spearman and Cox methods. Results 1.5% of all the IgAN patients presented malignant hypertension. The common clinical features were renal failure (100%), hyperurieacidemia (62.7%) and hypertriglyceridemia (51.7%). The average amount of urine protein excretion was 2.8 g/d. The common pathological changes were moderate mesangial proliferation, severe global sclerosis, severe interstitial inflammation and severe interstitial- tubular fibrosis. The small arteries (arcuate arteries and interlobular arteries) and arterioles (afferent arterioles) were both involved in IgAN-MHT. The characteristic lesions of intrarenal arteries included vascular occlusion, media thickening, proliferative endarteritis (onionskin lesion, musculomucoid intimal hyperplasia), hyaline arteriosclerosis, but mainly vascular occlusion (86.2%). The arteriole lesion was negatively correlated with age and total protein level; vascular occlusion was positively correlated with uric acid level. The average foUow-up period was 21.1 months. Forteen patients reached the endpoint. The arteriole lesion was the main independent risk factor for the progression of IgAN-MHT (RR=10.21, 95%CI=1.16～89.67). Conclusions The main clinical feature of IgAN-MHT is renal failure. The main histological feature of intrarenal vascular lesions is occludes arterioles. Arteriole lesion is the main independent risk factor for the progression of IgAN-MHT.

Aristolochic Acids ; adverse effects ; Child ; Drugs, Chinese Herbal ; adverse effects ; Female ; Humans ; Male ; Nephrosis ; chemically induced

Objective　To investigate the significance of TGF-β1, TGFRl and TGFR2 in the pathogenesis and prognosis in patients with myelofibrosis. Methods　The expression of TGF-β1 and its receptors (TGFR1 and TGFR2 ) in bone marrow tissues and the level of TGF-β1 in the blood of 23 patients with myelofibrosis were detected by SABC immunocytochemistry and ELISA repectively. Results　Expression of TGF-β1 and TGFR 1 was significantly higher in primary and secondary myelofibrosis patients than that of the control. No significant difference of TGFR2 expression was found between the groups of myelofibrosis and the control (P>0.05). The level of TGF-β1 in the blood of the patients with myelofibrosis was significantly higher than that of the control (P<0.01) and more obvious in secondary cases while TGF-β1 decreased nearly to the normal level when patients were in clinical remission. Conclusion　TGF-β1 and it's receptors may be involved in the pathogenesis of myelofibrosis and might be of importance for the prognosis of the patients with myelofibrosis.

Objective To study the homology characteristics of clinicaly isolated and colonized linezolid(LZD)-resistant Enterococcus faecalis (E.faecalis) strains from a patient.Methods Ten E.faecalis strains (2 were isolated from urine specimens and 8 were from stool specimens) isolated from a patient with pulmonary infection were performed antimicrobial susceptibility testing, homology of E.faecalis was determined by pulsed-field gel electrophoresis (PFGE).Results Before and after patients received LZD therapy, 2 E.faecalis strains isolated form urine specimens were both resistant to LZD (MICs: 8 mg/mL, 16 mg/mL, respectively), among 8 strains from stool specimens (6 were isolated before therapy, and 2 were isolated after therapy), LZD susceptible, intermediate, and resistant strains were 4, 2, and 2 respectively(MICs: 0.25-12 mg/mL).10 strains of E.faecalis were homologous by PFGE typing.Conclusion In this case, the detection of E.faecalis from urinary tract and intestinal tract is homologous, which suggested that LZD-resistant Enterococcus may be colonized in vivo for a long time, and may be shift to cause bacterial infection.

Objective This study was designed to examine the clinical characteristics of bloodstream infections (BSI) caused by Staphylococcus aureus in a teaching hospital and the risk factors for 30-day mortality.Methods A single center retrospective cohort study was conducted for all the patients with BSI caused by S.aureus between 2008 and 2015.The data of clinical features,microbiology,and 30-day mortality were collected from the database of electronic medical records.Results A total of 121 patients with S.aureus BSI were identified.The prevalence of methicillin-resistant S.aureus (MRSA) was 17.4％ (21/121).MRSA BSIs were significantly associated with old age (≥65 years) (P=0.026),hospital acquired infection (P=0.035),respiratory tract infection (P=0.001),polyinfection (P=0.005) and inappropriate initial antibiotic therapy (P=0.001) than methicillin-sensitive S.aureus (MS SA) BSIs.The 30-day mortality was 18.2％ (22/121).Both univariate and multivariate analysis suggested that solid tumor (OR,8.932,P=0.004) and septic shock (OR,56.721,P＜0.001) were independently associated with the 30-day mortality.Conclusions The present study confirms that solid tumor and septic shock are more important risk factors than MRSA in mortality of patients with S.aureus BSI.

OBJECTIVE To investigate the develop mental toxicity of muscone to embryos. METHODS With zebrafish embryos as a model,The 3 h post fertilization (hpf)embryos were exposed to muscone at 5,10,20,40,80 and 160 μmol·L -1 culture solutions for 96 h and inspected daily with mi-croscopy for larval morphology.The drug solution was replaced every 24 h.Spontaneous move ments were checked at 24 hpf.Heart rate at 48 hpf,hatching rate,e mbryo deformity rate and mortality rate were evaluated.The expression of sepn1 was determined with real-ti me quantitative PCR technique at 96 hpf.RESULTS The 24 hpf spontaneous move ments showed no significant difference.At 48 hpf, spine curvature,pericardial ede ma,yolk sac ede ma,and abnormal swi mming were observed.In addition, the 48 hpf heart beats(10 s)was decreased fro m 26.5 ±1 .0 to 18.0 ±1 .9(P <0.01 ).At 48 hpf , hatching rate of 5 ~40 μmol·L -1 decreased(P <0.05),while of 160 μmol·L -1 increased (P <0.05) co mpared with muscone 0 μmol·L -1 .Muscone had little effect on hatching rate at other ti me points;Mal-formation rate and mortality rate at higher concentrations were up to 100%.The sepn1 gene expression at 96 hpf in the exposure groups decreased co mpared with that of control group(P <0.01 ).CONCLU-SION Muscone had toxic effects on the develop ment of zebrafish embryos,including spine curvature, abnormal swi mming,and pericardial ede ma.These effects may be related to the inhibition of sepn1 gene expression by muscone.

Optimization of cultivation condition of recombinant E. coli DH5 alpha/pDH-B2m and the condition suitable for expression of recombinant mature peptide of human bone morphogenetic protein-2 was carried out in 500 mL shaking flasks and then transferred to NBS Bioflo IV, a 20 L DO feed-back fed-batch culture system, to obtain rhBMP-2. The results indicate that keeping dissolved oxygen at 40% and controlling nutrient feeding rate with DO feed back strategy can obtain theoretically 3.59 g recombinant mature peptide of hBMP-2 per liter of broth, the final cell density OD600 reaches 57(22.8 g dry cell weight/L), and the expression of rhBMP-2 amounts to 30% of the total protein in E. coli.
Bone Morphogenetic Protein 2 ; Bone Morphogenetic Proteins ; biosynthesis ; genetics ; Culture Media ; Escherichia coli ; genetics ; Fermentation ; Glycerol ; pharmacology ; Recombinant Proteins ; biosynthesis ; Time Factors ; Transforming Growth Factor beta

OBJECTIVETo study the expression of FHIT protein and its potential application in diagnosing classic Hodgkin lymphoma.

METHODSImmunohistochemical study using EnVision method for FHIT tumor suppressor protein, hematopoietic stem cell markers CD133/AC133 and CD34, B-cell marker CD20, T-cell marker CD3 and oncoprotein c-erbB2 was performed on 33 cases of classic Hodgkin lymphoma.

RESULTSThirty-three of the Hodgkin lymphoma cases (90.9%) expressed FHIT protein. The antigen was mainly located in the cytoplasm, nucleus and membrane of classic Reed-Sternberg and Reed-Sternberg-like cells. Normal B and T lymphocytes, as well as their malignant counterparts, were negative for FHIT protein; whereas monocytes, histiocytes and dendritic cells were positive. All the cases studied were negative for CD133/AC133, CD34, CD3 and c-erbB-2. Two of the 33 cases showed positive staining for CD20 in some of the Reed-Sternberg cells.

CONCLUSIONThe expression of FHIT protein can be used as a useful adjunct in diagnosing classic Hodgkin lymphoma.

AC133 Antigen ; Acid Anhydride Hydrolases ; metabolism ; Adolescent ; Adult ; Aged ; Aged, 80 and over ; Antigens, CD ; metabolism ; Antigens, CD20 ; metabolism ; Biomarkers, Tumor ; metabolism ; Cell Nucleus ; metabolism ; Child ; Child, Preschool ; Cytoplasm ; metabolism ; Female ; Glycoproteins ; metabolism ; Hodgkin Disease ; diagnosis ; metabolism ; Humans ; Immunohistochemistry ; Male ; Middle Aged ; Neoplasm Proteins ; metabolism ; Peptides ; metabolism ; Reed-Sternberg Cells ; metabolism ; Sensitivity and Specificity

Objective To understand genetic mutation sites in linezolid (LZD)-sensitive and inducible resistant strains of methicillin-resistant Staphylococcus aureus (MRSA) using whole-genome sequencing,and realize mutation sites of LZD-resistant gene.Methods MRSA-MS4 with explicit genotype and whole-genome sequences was induced by LZD of different concentration gradients,LZD-resistant strain MRSA-MS4-LZD100 was obtained,minimum inhibitory concentration(MIC) was detected,domain V of 23S rRNA and ribosomal proteins L3/L4 gene in MRSAMS4-LZD100 were amplified by polymerase chain reaction (PCR),the sequenced products obtained the corresponding mutation site in contrast with the wild-type strain;Illumina PE library was constructed through paired-end sequencing by Illumina HiSeq 2000 technique,and whole genome sequencing was completed based on bioinformatics.Results MRAS-MS4-LZD100 strain was induced after 32 passages,MIC of LZD was 96 μg/mL.Sequencing of PCR products indicated the genetic variations were G2447T mutation in multiple copies of domain V of 23S rRNA gene,and Gly113Val mutation in L3 protein respectively;the whole genome of MRSA-MS4-LZD100 contained 2 744 315 bp,annotation of the whole genome found a total of 2 509 genes,11 tRNA-encoding genes and 2 entire rRNA-encoding operons.The data were submitted to the PubMed,and the GeneBank accession number JXMJ00000000 was assigned;a total of 101 SNPs and 6 Small indels were found,16 of 101SNP mutations occurred in exon,of which the variant proteins with anmino acid sequence alterations included IstB ATP binding domain-containing protein,clumping factor A,IS1272 transposase and so on;3 of 6 Small indel mutations occurred in exon,of which the variant proteins with anmino acid sequence alterations included hypothetical protein,30S ribosomal protein S1,and clumping factor A.Conclusion LZD-resistant strain MRSA-MS4-LZD100 was successfully induced by LZD;beside 23S rRNA V domain and ribosomal L3 protein,the other mutant site exist in this resistant strain,which provide some direction for subsequent study of recessive LZD resistance mechanism.