2.Induced Nitric Oxide From Alveolar Macrophages Inhibits Experimental Pulmonary Metastasis in Mice
Chinese Journal of Cancer Biotherapy 1996;0(04):-
The inhibition of pulmonary metastasis by inhalation of aerosolized recombinant 1L-2 (rIL-2) in BCG-primed mice is reported in this paper . (TA2 x 615) Fl mice were given ip BCG twice in two-week apart.Right after the second BCG injection, MA891 cells, a murine mammary adenocarcinoma of TA2 origin, were injected into the tail vein.Treatment with aerosolized rIL -2 by inhalation was given for 1 hr, 3 times a day and lasted for 14 days. After sacrifice, bronchoalveolar lavage was performed and the lavage fluid was examined for nitric oxide content. The number of tumor nodules on the lung surface was recorded as a measure of the extent of pulmonary metastasis. The results showed that in mice so treated, pulmonary metastasis was very significantly inhibited. When rIL-2 treatment was given in BCG-unprimed mice, inhibition of pulmonary metastasis was also observed albeit to a much lesser extent. Significant inhibition of lung metastasis was associated with significant increase in nitric oxide content in the broncho-alveolar lavage fluid. Moreover, when nitric oxide synthase inhibitor, NG monomethyl-L-arginine (7mg/kg) was given ip shortly before each inhalation of rIL-2, accompanied with a significant reduction of nitric oxide in the lavage fluid, the inhibitory effect of rIL-2 in both BCG-primed and -unprimed mice was almost completely abrogated. Taken together, the results clearly indicate that pulmonary metastasis can be effectively treated by the induction of endogenous release of nitric oxide from activated alveolar macrophages.
4.Prenatal ultrasound diagnosis of persistent right umbilical vein and its complicated abnormalities
Chinese Journal of Perinatal Medicine 2012;15(7):416-419
Objective To investigate the value of prenatal ultrasound in diagnosing fetal persistent right umbilical vein (PRUV) and structural malformations.Methods From April 2007 to August 2011,38 827 pregnant women in Obstetrics and Gynecology Hospital of Fudan University accepted ultrasound examination,among which 109 fetuses were found PRUV.The relation between PRUV and other structural abnormalities was retrospectively analyzed.Results The incidence of PRUV was 0.28% (109/38 827) including 100 singletons and 9 twins.Among the 109 cases of PRUV confirmed by the prenatal ultrasound diagnosis,95 cases did not complicate with fetal structural abnormality (90 singletons,5 twins),and had normal deliveries with healthy infants.Four infants were tested for their chromosomes and got normal results.The rest 14 fetuses with PRUV suffered from fetal structural abnormality (12.8%,14/109),among which,10 fetus (71.4%,10/14) suffered from cardiovascular abnormality such as endocrinal cushion defeats,double outlet right ventricle,single atrium and single ventricle.Nine pregnant women accepted artificial terminations.Only one of the 14 fetuses had chromosome test and got normal result.Conclusions Once PRUV was diagnosed by prenatal ultrasound,it is suggested to check the fetus carefully,especially the cardiovascular system.
5.Breast Cancer During Pregnancy
Chinese Journal of Bases and Clinics in General Surgery 2004;0(01):-
Objective To study the advances in research of breast cancer during pregnancy. Methods The literatures in recent years were reviewed. Results A lot of evidences suggested that the diagnosis may be delayed easily. The diagnosis was primarily made by needle aspiration cytology and biopsy. The treatment of pregnant breast cancer was not different from ordinary breast cancer, however the factor of foetus should be taken into account. Termination of pregnancy did not improve survival.Conclusion Pregnant breast cancer is mostly at later stage at the time of diagnosis and has poorer prognosis than ordinary breast cancer. The patients with breast cancer during pregnancy usually have an equivalent survival rate when compared with age and stage-matched ordinary group. Future pregnancy may be allowed after two years of treatment in patients with early breast cancer.
6.The radiological presentations of invasive pulmonary fungal infections and its clinical value in children
Chinese Pediatric Emergency Medicine 2016;23(9):595-599
With wide applications of invasive diagnostic and therapeutic techniques,as well as immu-nosuppressors clinically,the morbidity of invasive pulmonary fungal infections( IPFIs)in children were in-creasing considerably and becoming one of the important diseases threat to life. The mortality of IPFIs in chil-dren would be reduced and the prognosis would be improved significantly with early diagnosis and treatment in-time. Radiological examinations were the basal component of the clinical evidences for diagnosing IPFIs. The main presentations include pulmonary nodules,some with“halo sign”in invasive pulmonary aspergillo-sis and pulmonary candidiasis,lobular consolidations and a little pleural effusion. Although there was no spe-cific findings radiologically,they would provide the proofs and clues for diagnosis of IPFIs combining with the data of clinics and laboratory.
8.Clinical analysis of 43 cases of positive culture of cerebrospinal fluid in children
Wei REN ; Chunlei YUAN ; Tao ZHOU
Chinese Pediatric Emergency Medicine 2014;21(2):101-103
Objective To evaluate the significance of cerebrospinal fluid(CSF) culture in diagnosis and treatment of childhood bacterial meningitis(BM).Methods Clinical data were collected and the etiology,laboratory results,treatment and disease prognosis were analyzed in children with positive CSF culture during Jan 2011 to Dec 2012 in our hospital.Results A total of 43 organisms were detected from CSF,13 cases of which were clearly diagnosed as BM.The coagulase negative staphylococcus was isolated most frequently (51.2%,22/43),meanwhile,CSF routine examination and biochemical test were abnormal in only 1 case.All results of blood cultures were negative.All cases were cured without changing antibiotics according to the drug sensitive test.Four strains of Streptococcus agalactiae,2 strains of Streptococcus pneumohiae and 4 strains of gram-negative bacilli were separated.Routine examinations of all CSF were abnormal in most cases,the CSF biochemical tests were abnormal and blood cultures were positive.Conclusion Coagulase negative staphylococcus separated in most CSF is contaminated bacteria.Streptococcus agalactiae,Streptococcus pneumoniae and gram-negative bacilli separated in CSF have important diagnostic value in BM.Diagnosis of BM should be combined with CSF culture,routine examination,biochemical test,blood culture results and clinical manifestations,then we can avoid unnecessary usage of antibiotics.
9.Intervention effects of trichostatin A on specilization of bone marrow mesenchymal stem cells in vitro
Zhifeng YUAN ; Guohua XU ; Li REN
Chinese Journal of Biochemical Pharmaceutics 2015;(3):39-41,44
Objective To explore the intervention effects of trichostatin A ( TSA ) on specialization of rat bone marrow mesenchymal stem cells ( MSCs ) .Methods The rat MSCs were isolated, cultured and purified by the whole bone marrow adherent method in vitro, with morphological observation.The third generation of MSCs were selected, directional induced to osteoblasts, and divided into the TSA low dose group (0.1μmol/L), middle dose group (1μmol/L) , the high dose group (10μmol/L) according to different drug concentrations, seting up blank control group at the same time.MSCs proliferation and cell growth curve of each group were drawn by MMT, the activity of alkaliphosphatase ( ALP) was detected, and the levels of corebinding factor α1 (Cbfα1), basic fibroblast growth factor (bFGF) and insulin-like growth factors-1 (IGF-1) mRNA were detected by RT-PCR. Results The trend of MSCs growth curves in each groups were similar, compared with control group, the growth curve of TSA low dose group had no significant change, the TSA middle dose and high dose significantly promoted the proliferation of MSCs (P<0.05).Compared with control group, ALP activity of TSA low-, middle-and high-dose group were significantly higher at 4th,5th,6th(P<0.05).The expression levels of Cbfα1, bFGF and IGF-1mRNA were significantly higher than those of control group, respectively (P<0.05).Conclusion TSA can significantly promote the rat bone marrow mesenchymal stem cells to differentiate into osteoblast, which is possibly associated with up-regulation of Cbfα1, bFGF and IGF-1mRNA level.
10.Evaluation of thyroglobulin mRNA in peripheral blood of patients with differentiated thyroid carcinoma after remnant ablation
Qun, FAN ; An-ren, KUANG ; Geng-biao, YUAN
Chinese Journal of Nuclear Medicine 2008;28(4):267-269
Objective The aim of this study was to evaluate the diagnostic value of thyroglobulin(Tg)mRNA in peripheral blood samples of patients with differentiated thyroid carcinoma(DTC)after remnant ablation.Methods Tg mRNA Was detected by reverse transcription-polymerase chain reaction(RT-PCR)in peripheral blood of 162 patients.SPSS 13.0 was used for date analysis.Results The Tg mRNA assay had higher sensitivity than the conventional serum Tg measurement[86.61%(97/112)vs 53.57%(60/112),X2=29.153,P<0.001]which Was the"gold standard"for the identification of recurrence or metastases.In the anti-Tg antibodies(TgAb)positive DTC patients,the sensitivity of Tg mRNA was higher than that of serum Tg[86.54%(45/52)vs 0]in identifying recurrent or metastatic thyroid disease(X2=79.322,P<0.001).There was a significantly positive correlation between Tg mRNA expression and the clinical stages(Kendall correlation coefficient=0.515,P<0.001).There was no difference of Tg mRNA expression in peripheral blood among ages,sex,pathological types and location of metastases,respectively(Kendall correlation coefficient=0.020,0.069,0.050 and 0.028;all P>0.05).Conclusions Circulating Tg mRNA is a more sensitive marker than serum Tg in identifying recurrent or metastatic DTC,particulady in patients during levo-thyroxine(l-T4)therapy and with TgAb-positive.The DTC patients who have positive expression of Tg mRNA indicates poor prognosis.