Retinoblastoma(RB) is the most common infant malignant tumor of eye.It seriously affects the life quality and life span.The rapid development of biological technology allows some new breakthroughs in the basic and clinical researches of RB.Current researches focus on its etiology and pathogenesis,and the ultimate aim is to guide clinical prevention,detection and management.Some literature revealed and summarized the histological source of RB,mutation detection of Rb gene,hereditary clue of RB susceptibility,and gene-therapy of RB.Gene therapy of RB is a new treating approach to RB in recent years,and its development brings a chance for achieving the goal of curing RB and improving patient prognosis.The research progress of RB is reviewed here.

Insulin receptor substrate(IRS)-1 and IRS-2 expression levels of liver tissues and skeletal muscle in intrauterine growth retarded(IUGR)rats were investigated by RT-PCR and immunohistochemistry.An IUGR animal model was established by maternal nutrition restriction during pregnancy.IRS-2 expression level of liver tissue and IRS-1 expression level of skeletal muscle in IUGR rats at 0 and 3 weeks old were significantly lower than those in normal rats at the same age respectively,and insulin resistance was induced in IUGR,and these findings might be the molecular mechanisms susceptible to metabolic syndrome in IUGR rats.

Acute Disease ; Cohort Studies ; Humans ; Leukemia ; diagnosis ; Myelodysplastic Syndromes ; diagnosis ; Prognosis

OBJECTIVETo investigate the relationship between histopathological subtype of non-Hodgkin' s lymphoma(NHL) and chromosomal abnormalities, and compare the difference of chromosomal abnormalities between China and the West.

METHODSRoutine G banding chromosome analysis and fluorescent in situ hybridization( FISH) were performed on lymph node specimens from 155 NHL patients.

RESULTSDiffuse large B-cell lymphoma( DLBCL) constituted 38.1% of the cases followed by follicular lymphoma(FL) 17.4% , small lymphocytic lymphoma( SLL) 10.3% , peripheral T-cell lymphoma ( PTCL) ( unspecified) 8.4%, and angioimmunoblastic lymphoma 7.1%. One hundred nineteen patients (76. 8%) had clonal chromosomal abnormalities. The incidence of chromosomal abnormalities among FL, SLL, DLBCL, anaplastic large cell lymphoma (ALCL) and precursor T-cell lymphoblastic lymphoma (TLBL) was 96.3% , 87.5% , 86.4%, 83.3% and 83.3%, respectively. Complex karyotype was 86. 3% in DLBCL. The most frequent structural abnormalities in DLBCL involved chromosomes 3, 6, 14 and 1, with had high frequencies of 3q27 (41.2%) and 6q21, 6q23, 6q25 involvement (23.5%). But only 2 cases of DLBCL had classical t( 14; 18) (q32;q21) which was lower than that in the West (20%). The positive rate of IgH rearrangement was 40. 1% in DLBCL by FISH. No 13q14 deletion was found in 16 cases of SLL. Normal karyotype was observed in 8/11 cases with angioimmunoblastic T-cell lymphoma patients.

CONCLUSIONSThe distribution of the histopathological subtypes of NHL is different among different geographical areas. The chromosomal abnormalities in DLBCL was comparable between China and the West, but t( 14; 18) was infrequent in the former. The chromosomal abnormalities in SLL was different from the West. The incidence of chromosomal abnormalities in angioimmunoblastic T-cell lymphoma was lower than that in the West.

Adult ; Chromosome Structures ; Cytogenetic Analysis ; Female ; Humans ; In Situ Hybridization, Fluorescence ; Lymphoma, Large B-Cell, Diffuse ; classification ; genetics ; pathology ; Lymphoma, Non-Hodgkin ; classification ; genetics ; pathology ; Male

OBJECTIVETo summarize the diagnostic experience of primary myelodysplastic syndromes (MDS) in order to improve the diagnostic level.

METHODSUsing prospective cohort study to collect consecutive samples. Diagnoses of 282 MDS cases were defined according to FAB and WHO classification.

RESULTSThe median age at MDS onset was 56. 19.5% and 24.5% of cases occurred at age 50 - 59 and 70 - 79, respectively. Presence of immature granulocytes and erythroblasts in peripheral blood (PB) were found in 67% and 48% of the MDS patients, respectively. The percentage (68%) of FAB-RA and WHO-RCMD patients in China is relatively high compared to that in western countries. The abnormality of chromosome (31.2%) was lower than that in the West, and similar to that in Japan. Eighty nine percent of the MDS patients could be diagnosed on cell morphology in PB and bone marrow (BM) aspirate. Ninety four percent of MDS could be diagnosed by combination of BM aspirate and core biopsy. Ninety seven percent of the patients could be recognized by combination of bone marrow aspirate, core biopsy and cytogenetics.

CONCLUSIONSThe subtypes and clinical features of Chinese MDS patients were somewhat different from the West, but similar to that in Japan. Diagnostic efficiency can be extremely improved by combination of bone marrow aspirate, core biopsy and cytogenetics.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Blood Cell Count ; China ; epidemiology ; Female ; Humans ; Male ; Middle Aged ; Myelodysplastic Syndromes ; classification ; diagnosis ; epidemiology ; Prospective Studies

Objective: To explore the clinical effect of two disinfectors on prevention for central line-associated blood stream infection (CLABSI) in hemodialysis. Methods: 168 patients received blood purification through central venous indwelling catheter were divided into control group (82 cases) and observation group (86 cases) as random table. The patients of control group were disinfected by using iodophor disinfectant on central venous catheter and skin around puncture, while the patients of observation group were disinfected by using medical chlorhexidine gluconate (2% chlorhexidine gluconate, 70% isopropanol and 28%injection) on the same positions. In different stages, before and after central venous indwelling catheter and 24 hours after central venous indwelling catheter, the colony count and incidence of CLABSI of patients between two groups were compared. Results: There was no significant difference between the two groups for colony count around puncture before central venous indwelling catheter (t=-1.478, P>0.05). The colony count of observation group was lower than that of control group after 24 hours of disinfection. According to the diagnosis standards of CLABSI, the incidence of CLABSI in observation group was significant lower than that in control group (x2=6.048, P<0.05). Conclusion: The disinfector of chlorhexidine gluconate can decrease the incidence of CLABSI in hemodialysis and its bacteriostatic time is longer than that of iodophor disinfectant. Therefore, this method is worthy for promotion in clinical practice.

OBJECTIVE: The purpose of this study was to analyzed the histopathologic spectrum and clinical features of the tumors originated from the inferior nasal turbinates. METHOD: Clinical data of 34 patients with tumours of the inferior nasal turbinates, treated from Jan. 1998 to Dec. 2012, were retrospectively reviewed. Of the 34 patients, 18 male and 16 female, aged from 25 years to 76 years (mean: 45.6yr). RESULT: (1) Pathology : Of the 34 patients, 23 (67.6%) were benign and 11 (32.4%) were malignant. Hemangiomas were the most frequent benign tumour accounting for 18/23 (78.3%) in benign tumour and for 52.9% in all the tumors originated from inferior nasal turbinates. Other benign tumours included inverted papilloma, squamous papillomas and extrapleural solitary neurofibroma tumor. The most common malignant tumour was non-Hodgkin's lymphoma accounting for 6/11 (54.5%) in malignant tumour and for 17.6% in all the tumors. Other malignant tumour included squamous cell carcinoma, melanoma and undifferentiated carcinoma. (2) Distribution: Most tumors (31/34) arose from unilateral turbinates. Hemangiomas is the commonest tumor originated from anterior part of the turbinate in 14 cases of 18 (77.8%). NHL and melanoma involved through turbinates. 3. Symtoms: Nasal obstruction was the most common symtom (25/34, 73.5%). Epistaxis and bloody nasal discharge were the chief complaint in hemangiomas. CONCLUSION 1. The most common benign and malignant tumors of the inferior turbinate were hemangioma and NHL. The majority of the hemangiomas (14/18) arose from the anterior part of the inferior turbinate. NHL or melanoma often presented progressive, unilateral or bilateral diffuse enlargement of the inferior turbinate with poor vascular contractile reactivity to the ephedrine.
Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Nose Neoplasms ; pathology ; Retrospective Studies ; Turbinates ; pathology

Objective To study the relationship between chronic obstructive pulmonary disease (COPD) and osteoporosis by measuring the bone mineral density (BMD),lung function,blood gas analysis,calcium ion,high sensitive C reactive protein (hs-CRP) and the quality of life.Methods BMD measuring was performed by ultrasound dry bone densitometer in 32 patients with COPD (COPD group) and 35 healthy controls (control group).The ultrasonic transmission speed (SOS),SOS T,fracture risk factor (OSI) and bone strength (TI) were measured at the sites of the left calcaneus.COPD group was divided into three groups according to lung function,3 cases of mild,14 cases of moderate and 15 cases of severe.According to the level of BMD,there were another three groups,3 cases with normal BMD,24 cases with lower BMD,and 5 cases with osteoporosis.According to the history of systemic glucocorticoid application,COPD group was divided into two groups,10 cases with glucocorticoid application and 22 cases without glucocorticoid application.The levels of BMD between COPD group and control group were compared,and the correlation between BMD and lung function,blood gas analysis,calcium ion,hs-CRP and the quality of life in patients with COPD was analyzed.Results COPD group had lower BMD than that in control group (P ＜ 0.05).In COPD group,the severe patients had lower BMD than the moderate patients (P ＜ 0.05),and the severe patients had only lower SOS than the mild patients(P ＜ 0.05),but there was no statistic significant difference in BMD between the moderate and mild patients(P ＞ 0.05).According to the level of BMD,the osteoporosis patients had lower arterial oxygen tension (PaO2) and higher hs-CRP and COPD assessment test (CAT) than the normal BMD and lower BMD patients,and the lower BMD patients had lower PaO2 and higher CAT than the normal BMD patients (P ＜ 0.05),but there was no statistic significant difference in calcium ion among them(P ＞ 0.05).According to the history of systemic glucocorticoid application,the patients with glucocorticoid application had lower level of BMD than the other patients (P ＜ 0.05).SOS,SOS T,OSI and TI was correlated with one second forced expiratory volume percent predicted (FEV1％) (r =0.389,0.262,-0.295,0.265; P＜0.05),also correlated with PaO2 (r =0.391,0.100,-0.374,0.122;P＜0.05),and also correlated with CAT (r =-0.659,-0.463,0.175,-0.178 ; P ＜ 0.05).There was only a negative correlation between SOS and hs-CRP (r =-0.390,P ＜ 0.05).Further in Logistic regression analysis,the results showed that both PaO2 and FEV1％ were the risk factors of BMD reduction.Conclusions Patients with COPD have lower BMD than their peers of healthy.The reduction of blood oxygen pressure and lung function are the risk factors of BMD reduction.There is a conjecture that the reduced BMD is correlated with chronic inflammation in patients with COPD.

BACKGROUND:Cuttlebone/racemic polylactic acid composite artificial bone has been prepared in the previous studies to improve the incomplete degradation of cuttlebone. OBJECTIVE:To observe the degradation and biocompatibility of cuttlebone/racemic polylactic acid composite artificial bone in animals. METHODS:Thirty healthy New Zealand white rabbits were randomly divided into four groups. Models of right radial defects were prepared in rabbits, and model rabbits were subjected to implantation of cuttlebone/racemic polylactic acid composite artificial bone into the defects and muscular sac between the radial lateralis muscle and rectus (experimental group), implantation of cuttlebone into the defects and muscular sac between the radial lateralis muscle and rectus (control group 1), implantation of racemic polylactic acid into the defects and muscular sac between the radial lateralis muscle and rectus (control group 2), or no treatment (blank control group), respectively. At 2, 4, 8 weeks after operation, X-ray and histological examinations were performed in the four groups. RESULTS AND CONCLUSION:(1) Compared with the other three groups, the bone mineral density of the experimental group was significantly higher at 4 and 8 weeks after material implantation into the defects (P < 0.05), and moreover, the bone mineral apposition rate of the experimental group was significantly higher at different time after operation (P< 0.05). At 8 weeks after operation, the bone tissues in the experimental group grew from the both ends to the center to form multiple bone island-like structures, with less residual materials, and the marrow cavity and implanting material were in a traffic manner; in the control group 1, there were many residual materials, and no intercommunication was found between the marrow cavity and implant material. (2) At 2 weeks after material implantation into the muscle capsule, there were more inflammatory cels, but the inflammation relieved at 4 weeks and disappeared basicaly at 8 weeks, and the material was degraded partialy. These findings indicate that the cuttlebone/racemic polylactic acid composite artificial bone is a kind of good bone substitute material that has good biocompatibility and degradability.

Animals ; Cell Proliferation ; drug effects ; Cells, Cultured ; GATA6 Transcription Factor ; genetics ; Gene Expression Regulation ; Muscle, Smooth, Vascular ; drug effects ; Myocytes, Smooth Muscle ; drug effects ; Phenotype ; Rats ; Rats, Sprague-Dawley ; Simvastatin ; pharmacology