Drug Discovery ; Humans ; Multiple Myeloma ; drug therapy

The present article,based on the resource sharing,integration of personnel and the possible conflict after integration,puts forward the Scientific construction and standardized administration of centralized laboratory center.

AIM To investigate the possibility of microvolume rodent ventilator in improving the quality of global ischemia-reperfusion injury model in mice. METHDOS Global cerebral ischemia-reperfusion injury was preduced in mice by obstructing and decompressing bilateral common carolid arteries and pressuring and decompressing cervical soft tissue, artificial respiration was performed using rodent ventilator before those procedures. EKG, ECG was detected and pathological examination. RESULTS Rodent ventilator was used to keep essential physiologic ventilative volume befer pressure, EKG change was not been found in observed duration in all animals. The suppressed cephalograph was displayed continuously in various time in ischemic and reperfusion injury. Pathological examination indicated that the damage was worse progressly in cerebral cortex and hippocampus, as times of ischemic and reperfusion prolonged. CONCLUSION Using microvolume rodent ventilator success rate and stability is increased obviously in model of global cerebral ischemia-reperfusion injury in mice and mortality was decreased greatly.

Objective To discuss the safety and clinical effect of fine needle single-step centesis in percutaneous endoscopic nephrolithotomy for renal staghorn calculi. Methods Percutaneous endoscopic nephrolithotomy with fine needle single-step centesis was employed in 75 patients (single-step group) with renal staghorn calculi, and percutaneous endoscopic nephrolithotomy with two-step centesis was adopted in other 75 patients with renal staghorn calculi (two-step group). The clinical effect and the incidence of complications were compared between the two groups. Results The placement of drainage catheter was successfully accomplished in all 150 patients. In single-step group the operation time was 18-45 minutes with a mean of 36 minutes; the mean blood loss during the procedure was about 5 ml. After the treatment, massive bleeding occurred in 3 cases that needed blood transfusion, and residual stone was observed in 6 cases. In two-step group the operation time was 16-42 minutes with a mean of 34 minutes; the mean blood loss during the procedure was about 7 ml. After the treatment, massive bleeding occurred in 7 cases that needed blood transfusion; one of them had renal pseudoaneurysm and the bleeding was stopped after renal artery embolization treatment; and residual stone was observed in 7 cases. No procedure-related perirenal organ injury was seen in single-step group, while in two-step group pneumothorax (n=1) and injury of splenic flexure of colon (n=1)were found. Conclusion In performing percutaneous endoscopic nephrolithotomy, fine needle single-step centesis is more safe and effective than conventional two-step centesis.

Adult ; Aged ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Female ; Ferritins ; blood ; Hemoglobins ; metabolism ; Humans ; Killer Cells, Natural ; L-Lactate Dehydrogenase ; blood ; Lymphoma, T-Cell ; blood ; drug therapy ; pathology ; Male ; Middle Aged ; Neoplasm Staging ; Nose Neoplasms ; blood ; drug therapy ; pathology ; Prognosis

Objective To investigate the clinical value of ultrasound markers in screening fetal trisomy 21.Methods From Jan.2001 to Dec.2011,a retrospective study about sonographic information of 138 fetuses diagnosed as trisomy 21 was taken in the First Affiliated Hospital of Sun Yat-sen University.All fetuses were divided into 3 groups:isolated ultrasound markers,non-isolated ultrasound markers,and isolated structural malformations or other abnormalities.The relationship between trisomy 21 and ultrasound markers as well as structural anomalies or other abnormalities was analyzed.Results Sonographic anomalies were detected in 132 fetuses(95.7％,132/138),including ultrasound markers and structural malformations or other abnormalities.One hundred and twenty cases(87.0％,120/138)had ultrasound markers,38(31.7％,38/120)had one marker and 82(68.3％,82/120)had more than one marker (P ＜ 0.01).Fifty-one fetuses(37.0％,51/138)had isolated ultrasound markers and non-isolated markers were found in 69 fetuses(50.0％,69/138).Only 12 fetuses(8.7％,12/138)had isolated structural malformations or other abnormalities.In 20 fetuses on whom the first-trimester ultrasound screening were performed,all had ultrasound markers,95％(19/20)had thickened nuchal translucency and 55％ (11/20)had nasal bone hypoplasia.The most common ultrasound markers on the second-trimester screening were nasal bone hypoplasia,which accounted for 41.9％(52/124)cases,followed by thickened nuchal fold (25.0％,31/124),short fenurs and humerus(24.2％,30/124),echogenic intracardiac focus(16.1％,20/124),mild ventriculomegaly(15.3％,19/124),hyperechoic bowel(12.9％,16/124),mild renal pyelectasis(12.1％,15/124).Furthermore,thc common structural malformations or other abnormalities were as follows:cardiac defects(33.1％,41/124),digestive system(26.6％,33/124).Condusions Ultrasound markers are valuable for screening fetal trisomy 21.The fetuses of trisomy 21 usually had more than one ultrasound markers or associated with other abnormalities.Combinations of ultrasound markers with the results of serum screening and maternal age are necessary for evaluation.

Objective To investigate the correlation between human papilloma virus(HPV) 16/18 infection and the expression of Rb and p16 protein in bladder cancer tissue,and to analyze the relationship between HPV infection and the incidence of bladder cancer.Methods The expression of HPV16/18 E6 and E7 gene encoded protein,RB and p16 were detected by immunohistochemical method in 40 cases of bladder cancer and 40 cases of normal bladder tissues,and the correlation between them and pathological grading,stage of international union of cancer(UICC),whether recurrence or not after receiving surgery was analyzed.Results In bladder cancer tissues,HPV16/18 E6 and E7 gene encoded protein,RB and p16 positive rates were 65%,47.5%,42.5%,compared with the positive rate of normal bladder tissue samples(22.5%,92.5%,87.5%),the differences were statistically significant(P<0.05).The expression of HPV16/18 E6 and E7 gene encoded protein,Rb and p16 proteins were associated with pathological grading and staging of bladder cancer(P<0.05),but were not related to the tumor recurrence(P>0.05).The expression of HPV16/18 E6 and E7 gene encoded protein and Rb,p16 protein were not significantly correlated(P>0.05),The expression of Rb and p16 protein were negatively correlated(P<0.05).Conclusion HPV 16/18 infection is related to the occurrence and development of bladder cancer,but its mechanism might not be related to the abnormal expression of Rb and p16 protein.

ObjectiveTo investigate the clinical features of the abnormal chromosome karyotypes in twin pregnancies complicated with fetal malformations. Methods Totally 181 twin pregnancies (362 fetuses) in which one or two fetuses had abnormalities diagnosed by ultrasound were referred to the First Affiliated Hospital of Sun Yat-Sen University from January, 2000 to September, 2010. They were divided into different groups according to ( 1 ) maternal age: the cases with maternal age ≥35 were divided into advanced pregnancy group ( 105 fetuses) , and those with maternal age ＜35 were divided into young pregnancy group (203 fetuses) ; ( 2 ) conceived method : those conceived by assisted reproductive technology were divided into assisted reproductive group (81 fetuses), and the natural conception pregnancies were divided into natural conception group (227 fetuses) ; ( 3 ) chorionicity: the monochorionic twin (MCT) pregnancies were divided into MCT group( 123 fetuses), and the dichorionic twin (DCT) pregnancies were divided into DCT group( 185 fetuses); (4) structural abnormalities: 205 fetuses with structural abnormalities were divided into the abnormal fetal group, and 103 fetuses without structural abnormalities were divided into the normal fetal group. All fetuses were examined by the ultrasound and chromosomes were examined in 308 fetuses. Results( 1 ) The karyotype of fetuses: among 181 twin pregnancies, 23 cases had chromosomal abnormalities in 1 or 2 fetuses ( 12. 7％ ,23/181 ), and chromosomes were exarmined in both fetuses in 20 of 23 cases. Twenty-six of 308 fetuses were found with abnormal chromosomes ( 8.4％, 26/308 ) , and the aneuploid was the most common type of abnormal karyotypes ( 53.8％ , 14/26 ). Twenty-one of 205 fetuses with malformations were found with abnormal karyotypes (10. 2％, 21/205 ). (2) Seven of 123 fetuses in MCT group were with abnormal karyotypes (5.7％, 7/123), and 19 of 185 fetuses in DCT group were with abnormal karyotypes ( 10. 3％, 19/185 ). There was no statistical difference of abnormal chromosome incidence between the two groups. There were 14 fetuses with aneuploid in DCT group ( 7.6％, 14/185 ) ;but there was no fetus with aneuploid in MCT group. There was statistical difference between these two groups. In two cases of DCT group, only one fetus with malformation received chromosome examination because another fetus was dead, and the karyotypes were trisomy 21 and trisomy 18 respectively. Both fetuses of the rest 17 cases received chromosome examination, and the chromosomes of both fetuses in each pregnancy were different. Fifteen of 19 fetuses with abnormal chromosomes in DCT group were complicated with structural abnormalities, and 7 fetuses of 4 twin pregnancies in MCT group were with chromosomal abnormalities. (3) The comparison of the abnormal karyotype incidence between the advanced pregnancy group and young pregnancy group: the abnormal karyotype incidence of the advanced pregnancy group was 7. 6％ (8/105), and that was 8.9％ (18/203) in young pregnancy group. There was no statistical difference between the two groups ( P ＞ 0. 05 ). Six of 105 fetuses in advanced pregnancy group were aneuploids (5. 7％, 6/105), and 8 of 203 fetuses in young pregnancy group were aneuploids (3.9％, 8/203). The aneuploid incidence in advanced pregnancy group was significantly higher than that in young pregnancy group ( P ＜ 0. 05 ). (4) The comparison of the abnormal karyotype incidence between the assisted reproductive group and the natural conception group: 11 of 81 fetuses were with the abnormal karyotypes in assisted reproductive group ( 13. 6％, 11/81 ), and 15 of 227 fetuses were with the abnormal karyotypes in assisted reproductive group (6. 6％, 15/227). There was statistical difference between the two groups ( P ＜0. 05). There were 7 fetuses with the aneuploid in assisted reproductive group ( 8. 6％, 7/81 ) and 7 fetuses with the aneuploid in natural conception group ( 3. 1％, 7/227 ), which showed no statistical difference ( P ＞0. 05 ).(5) The comparison of the abnormal karyotype incidence between the abnormal fetal group and normal fetal group: 21 of 205 fetuses in abnormal fetal group were with abnormal karyotypes (10. 2％, 21/205), and 5 of 103 fetuses in normal fetal group were with abnormal karyotypes ( 4. 9％, 5/103 ) . There was no statistical difference (P ＞ 0. 05 ). 13 fetuses in abnormal fetal group were with the aneuploid (6. 3％, 1 3/205), and only one fetus in normal fetal group was aneuploid (1.0％, 1/103 ). There was statistical difference between the two groups ( P ＜ 0. 05 ). ConclusionsAneuploid is the most common abnormal karyotype in twin pregnancy complicated with fetal abnormalities, especially trisomy 21. Aneuploid mainly occurs in only one fetus of DCT, and chromosomal discordance is usually found in DCT. While in MCT, the twin fetuses with the same abnormal karyotype may have different pbenotypes. The results suggest that it is necessary to analyze both karyotypes of twins even if only one fetus is complicated with structural abnormalities.

Objective To investigate the prenatal diagnosis and phenotypic assessment strategies for fetal supernumerary marker chromosomes and derivative chromosomes. Methods Five cases of fetal supernumerary marker chromosomes and one case of fetal derivative chromosomes were diagnosed in the First Affiliated Hospital of Sun Yat-Sen University from March 12, 2010 to November 9, 2012 by conventional chromosome banding, fluorescence in situ hybridization (FISH) and spectral karyotyping (SKY). These cases were retrospectively reviewed. Combined with the results of ultrasonography, abnormal phenotypes and pregnancy outcomes were evaluated in these cases. Results All of the five supernumerary marker chromosomes were de novo, in which two were mosaic and the remaining three cases were non-mosaic. Of these five cases, two were type 47, XX+mar and ultrasound indicated abnormal phenotypes. FISH and SKY confirmed that they were derived from chromosome 4 and 22, respectively. The other three cases were marker chromosome with Turner syndrome karyotype (abnormal phenotypes were not found by ultrasound), in which two cases were derived from chromosome Y (by FISH) and one case was identified as ring chromosome X (by FISH and SKY). One de novo derivative chromosome was verified as a product of reciprocal translocation between chromosome 2 and 6 (by FISH and SKY). Induced abortion was performed in all cases between 25 and 32 gestational weeks. Conclusions By combining conventional chromosome banding, FISH and SKY, the origin and content of supernumerary marker chromosomes and derivative chromosomes can be identified. On this basis, clinical phenotype evaluation and genetic counseling may be offered with the ultrasonographic result.

Objective To evaluate the effect of curcumin on the proliferation of and apoptosis in HaCaT cells induced by tumor necrosis factor α (TNF-α).Methods HaCaT cells were cultured with the presence of different concentrations (0,1,5,10,25,50,100 ng/ml) of recombinant TNF-α,curcumin of 20 μmol/L,or the combination of recombinant TNF-α (25 ng/ml) and curcumin (20 μmol/L),for 24 hours followed by the determination of cell proliferation with methyl thiazolyl tetrazolium (MTT) assay.Western blot was conducted to measure the protein expression of proliferating cell nuclear antigen (PCNA) and Notch-1 in HaCaT cells treated with recombinant TNF-α (25 ng/ml) and curcumin (20 μ mol/L) alone or in combination for 24 hours.Flow cytometry using annexin-V/propidium iodine (PI) was performed to assess the early apoptosis in HaCaT cells incubated with recombinant TNF-α of 25 ng/ml and curcumin of 20 μmol/L alone or in combination for 12 hours.Statistical analysis was carried out with one-way analysis of variance.Results Recombinant TNF-α promoted the proliferation of HaCaT cells in a dose-dependent manner,with the maximum proliferation activity observed in HaCaT cells treated with TNF-α of 25 ng/ml,while curcumin of 20 μmol/L effectively inhibited the proliferation of HaCaT cells induced by TNF-α of 25 ng/ml (P ＜ 0.01).TNF-α of 25 ng/ml had no obvious effect on cell apoptosis,while curcumin of 20 μ mol/L markedly induced the apoptosis in HaCaT cells,and there was a synergy between TNF-α of 25 ng/ml and curcumin of 20 μmol/L in the induction of apoptosis in HaCaT cells,with the apoptosis rate being 2.3％,3.4％,11.6％ and 16.8％ respectively in untreated cells,cells treated with TNF-α,curcumin,and the combination of TNF-α and curcumin,respectively.Conclusions Curcumin could enhance the inductive effect of TNF-α on the apoptosis in,but suppress the promotive effect of TNF-α on the proliferation of,HaCaT cells.