Objective: To investigate the effects of chemotherapeutic drugs on CD44+CD24-/low cell subpopulation of triple-negative breast cancer. Methods: MDA-MB-231 cells were treated with paclitaxel, docetaxel, 5-fluorouracil, epirubicin, vinorelbine or gemcitabine at 0.2-, 1- and 5-fold of the drug peak plasma concentration (PPC) for 24, 48 and 72 h, respectively. The growth of MDA-MB-231 cells was detected by MTT assay. The percentage of CD44+CD24-/low cells was determined by flow cytometry (FCM) after treatment with different chemotherapeutic drugs at 1-fold of PPC for 48 h and after cell recovery. The change of percentage of CD44 +CD24-/low cell subpopulation in circulating blood from 10 patients with metastatic triple-negative breast cancer before and after chemotherapy was determined by FCM. Results: The proliferation ability of MDA-MB-231 cells was inhibited by the six chemotherapeutic drugs. The percentage of CD44+CD24-/low cells was not significantly increased especially in 5-fluorouracil-treated cell group(P<0.05) after treatment with different chemotherapeutic drugs at 1-fold of PPC. The percentage of CD44 +CD24-/low cells in circulating blood from 10 patients with metastatic triple-negative breast cancer was decreased after chemotherapy with 1-fold of PPC(P<0.05). Conclusion: The chemotherapeutic drugs of paclitaxel, docetaxel, 5-fluorouracil and epirubicin can reduce the percentage of CD44+CD24-/lowcell subpopulation, which in circulating blood can be decreased after chemotherapy in patients with metastatic triple-negative breast cancer. Copyright© 2011 by TUMOR.

Objective To investigate the effect of infection on the expression of substance P(SP) and Th1 cytokine on colonic mucosa in patients with irritable bowel syndrome(IBS).Methods Mucosa biopsy samples were obtained in descending colon and rectum from 77 patients(20 post-infective-IBS cases)and 30 controls by colonoscopy.The expressions of SP,interleukin(IL)-2,interferon(IFN)-?were determined by immunohistochemical staining.Results Compared with controls,expressions of SP,IL-2 and IFN-?were significantly increased in IBS patients with diarrhea-predominant(P＜0.05),and expression of SP in post-infective-IBS patients with cytokines positive(IL-2 and IFN-?)were also signifi- cantly increased(P＜0.05).There were no significant differences between non post-infective-IBS and controls.Conclusions Expression of SP was significantly increased in post-infective-IBS.SP upregulated the expression of Thl cytokines(IL-2 and IFN-?).Gastrointestinal infection may involve in the patho- genesis of IBS through neuroimmune mechanism.

Objective: To observe the role of rmh-TNF in enhancing the anti-angiogenesis effect of cisplatin on Lewis lung carcinoma in the mice.Methods: Lewis lung carcinoma model was established in C57BL/6 mice.Sixty model mice were randomly divided into 4 groups: control group,rmh-TNF group(1500000 U/kg),cisplatin group(6.15 mg/kg), and rmh-TNF plus cisplatin group.Twelve days after implantation of cancer cells,different drugs were injected intra- tumorallv for 3d.The expression of hypoxia inducible factor-1?(HIF-1?)gene in the tumor was identified by RT-PCR. Immunohistochemistry(IHC)image analysis was performed to determine the vascular endothelial growth factor(VEGF) and kinase domain region receptor(KDR)expression and the microvessel density(MVD).Expression of matrix metallo- proteinase-2(MMP-2)was detected by flow cytometry.Results: The MVD values in the control group,the rmh-TNF group,the DDP group and the combination group were(24.76?1.28),(18.95?1.22),(19.53?1.15),(10.43?1.05),respectively,with those of the rmh-TNF and DDP groups significantly lower than that of the control group and higher than that of the combination group(all P

OBJECTIVETo evaluate the clinical effect of the disk-up sinus reamer (DSR) applied to transcrestal maxillary sinus floor elevation with simultaneous placement of implants.

METHODSThirty-seven patients underwent transcrestal maxillary sinus floor elevation with fifty-one implants placed simultaneously using the DSR. The residual bone height (RBH) was 3 to 8 mm, (5.61 ± 1.61) mm on average. The safety of this technique and the pain index during the operation was evaluated. The final prostheses were restored in 3-6 months postoperatively. The follow-up period was 3 to 24 months. The stability and osseointegration of the implants were clinically evaluated, and the endo-sinus bone gain around the implants were measured.

RESULTSThe elevation height ranged from 2 to 8 mm, with an average of (4.75 ± 1.55) mm. There was no detectable sinus membrane perforation, no serious suffering or uncomfortable subjective sensation in any patients during operation with a pain index of (2.22 ± 0.98). During the follow-up period, no sinus complication was observed. Favorable osseointegration was obtained. There were no implants or prostheses which were loose or lost. The survival rate was 100%. The radiographic results demonstrated that the endo-sinus bone gain tended to reach stabilization after 6 months and the marginal bone loss was (1.20 ± 0.72) mm after 12 months.

CONCLUSIONSTranscrestal maxillary sinus floor elevation with simultaneous implant placement by DSR is a safe, invasive and handy technique, with higher elevation height, fewer clinical complications and less pain. It shows satisfactory clinical results in short term and a long-term observation is still needed.

Adult ; Aged ; Dental Implantation, Endosseous ; Dental Implants ; Female ; Follow-Up Studies ; Humans ; Male ; Maxillary Sinus ; diagnostic imaging ; surgery ; Middle Aged ; Osseointegration ; Pain Measurement ; Radiography, Panoramic ; Sinus Floor Augmentation ; instrumentation ; methods ; Tooth Loss ; diagnostic imaging ; surgery ; Treatment Outcome ; Young Adult

OBJECTIVETo investigate whether desferoxamine (DFO) preconditioning can induce tolerance against cerebral ischemia and its effect on the expression of hypoxia inducible factor 1alpha (HIF-1alpha) and erythropoietin (EPO) in vivo and in vitro.

METHODSRat model of cerebral ischemia was established by middle cerebral artery occlusion with or without DFO administration. Infarct size was examined by TTC staining, and the neurological severity score was evaluated according to published method. Cortical neurons were cultured under ischemia stress which was mimicked by oxygen-glucose deprivation (OGD), and the neuron damage was assessed by MTT assay. Immunofluorescent staining was employed to detect the expressions of HIF-1alpha and EPO.

RESULTSThe protective effect induced by DFO (decreasing the infarction volume and ameliorating the neurological function) appeared at 2 d after administration of DFO (post-DFO), lasted until 7 d and disappeared at 14 d (P < 0.05); the most effective action was observed at 3 d post-DFO. DFO induced tolerance of cultured neurons against OGD: neuronal viability was increased 23%, 34%, 40%, 48% and 56% at 8 h, 12 h, 24 h, 36 h, and 48 h, respectively, post-DFO (P < 0.05). Immunofluorescent staining found that HIF-1alpha and EPO were upregulated in the neurons of rat brain at 3 d and 7 d post-DFO; increase of HIF-1alpha and EPO appeared in cultured cortex neurons at 36 h and 48 h post-DFO.

CONCLUSIONDFO induced tolerance against focal cerebral ischemia in rats, and exerted protective effect on OGD cultured cortical neurons. DFO significant induced the expression of HIF-1alpha and EPO both in vivo and in vitro. DFO preconditioning can protect against cerebral ischemia, which may be associated with the synthesis of HIF-1alpha and EPO.

Animals ; Brain Ischemia ; drug therapy ; metabolism ; physiopathology ; Cells, Cultured ; Cerebral Infarction ; drug therapy ; metabolism ; physiopathology ; Deferoxamine ; pharmacology ; therapeutic use ; Disease Models, Animal ; Erythropoietin ; metabolism ; Fluorescent Antibody Technique ; Hypoxia-Inducible Factor 1, alpha Subunit ; drug effects ; metabolism ; Hypoxia-Ischemia, Brain ; drug therapy ; metabolism ; physiopathology ; Infarction, Middle Cerebral Artery ; drug therapy ; metabolism ; physiopathology ; Iron ; metabolism ; Ischemic Preconditioning ; methods ; Nerve Degeneration ; drug therapy ; metabolism ; physiopathology ; Neurons ; drug effects ; metabolism ; pathology ; Rats ; Rats, Sprague-Dawley ; Siderophores ; pharmacology ; therapeutic use ; Time Factors ; Treatment Outcome ; Up-Regulation ; drug effects ; physiology

OBJECTIVETo investigate the therapeutic effects of Aiyishu Injection (AYSI) on cancerous hydrothorax, quality of life (QOF), and cellular immune function of patients.

METHODSSixty late-stage cancer patients accompanied hydrothorax were randomly divided into the experimental group (EG) and the control group (CG), with thirty patients in each group. After thoracenteses being carried out in all patients for draining off hydropsy, to the patients in EG, AYSI was medicated, 50 ml by intrathoracic and another 50 ml by intravenous injection; while to the patients in CG chemotherapeutic agent or interleukin-2 (IL-2) was given. The same treatment, thoracentesis and medication, was repeated 3 days later. After 4 weeks, the volume of pleural effusion was measured with B-mode ultrasound to evaluate the therapeutic effects of AYSI. QOF, body weight and T-lymphocyte subsets were compared between the two groups before and after treatment.

RESULTSThe clinical efficacy was significantly higher in EG than that in CG (P < 0.01). Besides, QOF was significantly improved (P < 0.05) and levels of CD3+ , CD4+ , CD4+ /CD8+ in peripheral blood increased in EG after treatment, which were significantly different to those in CG (P < 0.01, P < 0.05).

CONCLUSIONAYSI has definite therapeutic effects on cancerous hydrothorax, it could improve QOF and cellular immune function in patients with cancer.

Animals ; Antineoplastic Agents ; therapeutic use ; Carcinoma, Non-Small-Cell Lung ; complications ; drug therapy ; Coleoptera ; chemistry ; Humans ; Hydrothorax ; drug therapy ; etiology ; Injections ; Lung Neoplasms ; complications ; drug therapy ; Materia Medica ; therapeutic use ; T-Lymphocyte Subsets ; drug effects ; immunology

A new method for the preparation of oligonucleotide microarray for gene expression detection was found. The key techniques and standards of quality controlling for preparation of oligonucleotide microarray was explored using gene of human 23 kD highly protein and Luciferase and mouse cytokine-associated genes. By the using of a software system MProbe, oligonucleotide probes were designed and BLAST. All the probes have a very high specificity, i.e. except target sequence, the similarity between the probe and non-target sequences is less than 70% and the hairpin structure are not exist in all probes. All the probes have the same length 40. GC contents in all probes are in a narrow scope (from 45% to 55%). All the probes are modified with amino at 5' or 3' terminal. The satisfied images with good sensitivity and very high specificity were obtained by the using of the methods above and also using of positive and negative controls and some internal controls(house keeping gene) to quantitate and balance expression of genes. High specificity, good sensitivity and stability have been verified by three continuous experiments using the oligonucleotide microarray to study gene expression profile of normal mouse breast grand tissue. The oligonucleotide microarray for expression detection prepared using our method have high specificity, good sensitivity and stability et al. It may be a more advanced method for analysis of gene expression profile.
Animals ; Cytokines ; genetics ; DNA, Complementary ; genetics ; Gene Expression Profiling ; Granulocyte-Macrophage Colony-Stimulating Factor ; genetics ; Interleukin-10 ; genetics ; Mammary Glands, Animal ; metabolism ; Mice ; Nerve Growth Factor ; genetics ; Oligonucleotide Array Sequence Analysis ; methods ; Polymerase Chain Reaction

Objective Clinical data of 19 Chinese patients with 21 hydroxylase deficiency (21OHD) were analyzed to improve the diagnosis and treatment level. Methods Clinical features and laboratory data were collected from 19 patients with 21OHD before and after treatment. Results In male patients, the average age of early appearance of secondary sexual character was (9.3?2.8)yrs, and excess androgen resulted in phallic enlargement. Primary amenorrhea was the most common complaint in female(87.5%), and the signs included a varying degree of labioscrotal fusion and clitoral enlargement. The average level of 17-hydroxy progesterone(17OHP) was (63.42?35.07) ?g/L, and adrenocorticotrophic hormone(ACTH), dehydroepiandrosterone(sodium) sulfate(DHEAS) and testosterone(T) were obviously elevated. CT scan showed bilateral adrenal hyperplasia. The level of 17OHP was significantly decreased after treatment[(63.42?35.07) ?g/L vs (3.15?2.71) ?g/L](P

STUDY DESIGN: Prospective controlled cohort study OBJECTIVE: To analyze the clinical outcome of video-assisted thoracoscopic surgery (VATS) between two different types of implants. SUMMARY OF LITERATURE REVIEW: The problem of correction loss has been reported with VATS, and different screws and rods have been developed to overcome this problem. Different implants will have varying effects in correctional outcome after VATS. MATERIALS AND METHODS: A total of 39 cases of idiopathic adolescent scoliosis treated with VATS between June 2001 and January 2005 were included in the study (mono-axial screws and a 4.5 mm rod: thin rod group=19 cases; poly-axial reduction screws and a 5.5 mm diameter rod: thick rod group=20 cases). All patients were followed for over 2 years postoperatively. For the comparison of surgical outcomes between the two groups, radiographic measurements were performed in the coronal and sagittal planes. RESULTS: Preoperative scoliosis angle (thin rod group 49.8degrees, thick rod group 47.1degrees), age, BMI, Risser stage, union time, operative time, and blood loss showed no statistical difference between the two groups. Postoperative average correction rate of scoliosis angle was 69% (15.8degrees) in the thin rod group and 70% (14.1degrees) in the thick rod group. However, correction rate after 2 years was 51% (24.5degrees) in the thin rod group and 60% (18.7degrees) in the thick rod group, showing statistically significant difference. There was a tendency toward correction loss in the thin rod group (8.7degrees vs. 4.6degrees p=0.0057). CONCLUSION: Postoperative correction rate was satisfactory in both groups. However, the thin rod group showed substantial correction loss. Therefore, poly-axial screws and thick rods are more suitable in VATS correction of scoliosis.
Adolescent ; Cohort Studies ; Humans ; Operative Time ; Prospective Studies ; Scoliosis ; Thoracic Surgery, Video-Assisted

objecfive To know and compare the intelligence level of children born in different time periods in regions with iodine deficiency disorders(IDD)in Liaoning province.Methods All 7-14 year-old children from ten schools were chosen as the subjects respectively from six villages in each of the six counties and in regions with iodine deficiency,who were respectively born at the initialization of iodinated salt supplying period(1978-1980);non-iodinated salt supplying period(1981-1990);recovery of supplied iodized salt period(1991-1995);universal iodized salt period(1996-2000),respectively.Intelligence quotient(IQ)was measured by Combined Ravens Test in China(CRT-C)and Combined Ravens Test-the Rural,in China,2nd edition(CRT-RC2).Results IQ of children during the non-iodized salt period(91.9±14.3)was significantly lower than the initial supply of iodized salt period(95.8±14.6,q=8.60,P<0.01),recovery of supplied iodized salt period(99.7±14.7)was significantly higher than the initial supply of iodized salt period, non-iodized salt sales period(q = 9.53, 18.13, all P < 0.01 ),universal salt iodization( 104.3 ± 14.9) was significantly higher than the initial supply of iodized salt period, non-iodized salt sales period, recovery of supplied salt iodization(q = 20.00,28.00,10.46, all P < 0.01). Children's rate of mental retardation (IQ≤69) was higher in non-iodinated salt supplying period (6.7%, 88/1314 ) than the initial supply of iodized salt (4.4%, 21/471, χ2 = 3.85, P < 0.05), recovery of supplied iodized salt period(3.3%,48/1470) was significantly lower than non-iodinzed salt supplying period (χ2 = 15.37, P < 0.01), universal salt iodization period(2.7%, 36/1344) was lower than the initial supply of iodized salt period(χ2 = 4.41, P < 0.05) and non-iodinzed salt supplying period(χ2 = 26.34, P < 0.01 ). The IQ and intelligent retarded rates in children born during the initial years of iodinated salt supplying period were not different. The IQ of the children during ten years of non-iodized salt supplying period fluctuated in a "∪" curve, while the intelligent retardation rates in a "∩" curve.The children born during the period of recovery supplied iodized salt increased their IQ and lowered the retardation rates year after year. The IQ of the children in universal iodized salt period kept on increasing while intelligent retarded rates reduced to the lowest level. Conclusions The intelligence level of children born in regions with IDD during non-iodized salt supplying period is remarkably lower than that of the beginning years of iodinated salt supplying period. The intelligence level of children born after universal iodized salt period is remarkably higher than that of the initial iodinated salt supplying period and recovery of supplied iodized salt period, respectively.