Objective To investigate the inhibitory effect of carbon-coated iron nanoparticles carrying cisplatin on the growth of NCI-H446 lung cancer cells and expressions of Caspase 3 and Survivin mRNA.Methods NCI-H446 lung cancer cells were treated with iron-carbon nanoparticles and/or cisplatin.The cell viability was detected by MTT method,and the mRNA expressions of Caspase 3 and Survivin were measured with RT-PCR.Results Cisplatin could inhibit the growth of NCI-H446 lung cancer cells,and the inhibitory effect was stronger when it was combined with the iron-carbon nanoparticles.The cells had apoptosis.The mRNA expression of Caspase 3 of NCI-H446 lung cancer cells was remarkably enhanced after treatment with iron-carbon nanoparticles combined with cisplatin,while the mRNA expression of Survivin was notably weakened (P＜0.05).Conclusion Carbon-coated iron nanoparticles carrying cisplatin could significantly increase the chemotherapy sensitivity of cisplatin on NCI-H446 lung cancer cells and enhance the therapeutic efficacy of chemotherapy drugs.

Objective To explore hemodynamic parameter changes in pulmonary arterial hypertension(PAH)treated by transplantation of bone marrow mesenchymal stem cells(MMSCs)in the experimental rats.Methods MMSCs cells were collected from bone marrow of Sprague-Dawleye(SD)rat's femoral and tibial bones,cultured and passaged in vitro,then stained by Hoechst 33342 fluorescence dye stuff.Ninety healthy male SD rats were randomly divided into 3 groups(n=30):normal control group(group N),MMSCs transplanted group(group M),PAH model group(group H).The rats in the two latter groups were given a single subcutaneous crotaline(50 mg/kg)to establish the model of PAH.The rats of group N were injected respectively a single subcutaneous 9 g/L saline water(6 mL/kg).After 21 days,5?109 L-1 MMSCs cultured in 1 mL phosphate-buffered saline were infused into the rats respectively in group M by sublingual vein and 1 mL L-DMEM was given in group H.The indexalso of right ventricle systolic pressure(RVSP),right ventricle hypertrophy index,arterial blood gas analysis and the changes of small pulmonary blood vessel were observed after 28 days.Results The administration of MMSCs 28 days after PAH nearly completely prevented the increase in RVSP with PAH alone [(32.20?2.32)mmHg vs(48.30?1.56)mmHg P

OBJECTIVETo compare the effect of transumbilical single-site single-port with that of transumbilical single-site double-port laparoscopic varicocelectomy in the treatment of varicocele in adolescents.

METHODSWe randomly assigned 80 varicocele patients aged 10 - 16 years to two groups of equal number to receive transumbilical single-site single-port and single-site double-port laparoscopic varicocelectomy, respectively. We compared the operation time, postoperative hospital stay, incisional pain, complications and satisfaction with the abdominal cosmetic outcomes between the two groups.

RESULTSAll the operations were successfully performed. The double-port group showed a significantly higher score on the Visual Analogue Scale than the single-port group (4.8 +/- 1.4 vs 3.6 +/- 1.1, t = -4.986, P < 0.01), but there were no significant differences between the two groups in the operation time ([29.8 +/- 4.2] vs [31.2 +/- 4.6] min, t = 1.383, P = 0.171), postoperative hospital stay ([1.95 +/- 0.7] vs [1.82 +/- 0.8] d, t = -0.784, P = 0.436), complications (0 vs 0) and scores on the satisfaction with abdominal cosmetic outcomes (4.6 +/- 0.6 vs 4.8 +/- 0.5, t = 1.253, P = 0.214). No recurrence, umbilical hernia, hydrocele and orchiatrophy were found in the two groups of patients at 6 months after operation, and no visible scar was observed on the abdominal surface.

CONCLUSIONWith strict surgical indications, single-site single-port and single-site double-port laparoscopic varicocelectomies have similar clinical effects in the treatment of varicocele, which leave no scar on the abdominal surface. Single-site double-port laparoscopy needs no special instruments and therefore is worthier of wide clinical application.

Adolescent ; Child ; Humans ; Laparoscopy ; methods ; Length of Stay ; Male ; Operative Time ; Umbilicus ; surgery ; Varicocele ; surgery

OBJECTIVETo investigate and compare the effect and safety of Holmium laser and Thulium laser in transurethral enucleation of the prostate in BPH patients.

METHODSNinety-eight BPH patients were divided into 2 groups and underwent transurethral enucleation of the prostate with holmium laser (Ho group) and thulium laser (Th group) respectively. Comparisons were made between the 2 groups in operation time, bleeding volume, electrolyte, IPSS score, PVR and Qmax.

RESULTSNo statistically significant differences were noted between the 2 groups in age and preoperative prostate volume, IPSS, PVR and Qmax (P > 0.05). The mean operation time was shorter in the Th group ([84.6 +/- 10.2] min) than in the Ho group ([70.5 +/- 7.5] min) (P = 0.032); blood loss was less in the former ([126.5 +/- 14.6] ml) than in the latter ([176.5 +/- 14.1] ml) (P = 0.071), with no blood transfusion necessitated; and the mean times of catheter indwelling were 2.4 d and 2.5 d respectively. There were no significant differences in the levels of hemoglobin and electrolyte before and after operation between the two groups, and no TURP syndrome was observed. IPSS, PVR and Qmax before operation were significantly different from those obtained 3 months after it (P < 0.05) in both the groups, but none of the indexes exhibited statistically significant differences when compared in the same period (P > 0.05).

CONCLUSIONBoth holmium and thulium laser transurethral enucleation of the prostate can alleviate LUTS in BPH patients with similar short-time effectiveness. Thulium is superior to holmium laser in hemostasis, but inferior to it in anatomical distinctness.

Aged ; Aged, 80 and over ; Humans ; Lasers, Solid-State ; therapeutic use ; Male ; Middle Aged ; Prostatic Hyperplasia ; surgery ; Thulium ; therapeutic use ; Transurethral Resection of Prostate ; methods ; Treatment Outcome

BACKGROUNDDocetaxel (DOC) therapy is well tolerated and shows high response rates in patients with hormone refractory prostate cancer (HRPC). There are many reports on the effect of rapamycin (RPM) on the treatment of carcinogenesis. The goal of this study was to test whether RPM could enhance the susceptibility of both androgen-dependent and -independent prostate carcinoma cells to DOC.

METHODSProstate cancer (PC) cell lines (LNCap, PC3 and AILNCap) were cultured and treated with RPM and DOC alone or in combination. The effects of therapeutic agents on cells were determined by the WST-1 assay. Apoptosis induction was confirmed by flow cytometric analysis. The apopcyto caspase colorimetric assay kit was applied to measure the activities of caspases 3 and 9. The antitumor effects of RPM and DOC against PC cells were also assessed in nude mice using four randomized groups: control, RPM, DOC and combination drug therapy by measuring tumor size. All the animals tolerated both RPM and DOC without significant weight loss.

RESULTSRPM and DOC caused dosage-dependent growth suppression of PC cells. RPM could increase the susceptibility of PC cells to DOC significantly, and combined treatment with RPM and DOC caused synergistic growth suppression in all examined PC cell lines by isobolographic analysis. Both RPM and DOC significantly induced apoptosis in a dosage-dependent manner. RPM (10 nmol/L), DOC (1 nmol/L), and combined treatment induced apoptosis rate were 8%, 17% and 38%, respectively (the control was 2%). RPM could promote the apoptosis induced by DOC in PC cell lines. Both RPM and DOC significantly increased the caspase activity in a dosage-dependent manner. The relative activities of caspase 9 in control, RPM, DOC and RPM + DOC groups were 0.22 +/- 0.02, 0.36 +/- 0.06, 0.47 +/- 0.05 and 0.84 +/- 0.08, respectively. The relative activities of caspase 3 were 0.21 +/- 0.02, 0.24 +/- 0.05, 0.42 +/- 0.06 and 0.81 +/- 0.09, respectively. Either RPM or DOC alone significantly inhibited the growth of PC cells in nude mice compared to the control. The combination of RPM and DOC produced a significant reduction in tumor volume when compared to RPM or DOC alone. After 5-week treatment, the tumor sizes of LNCap in control, RPM, DOC and RPM + DOC groups were (570 +/- 56) mm(3), (412 +/- 41) mm(3), (425 +/- 46) mm(3) and (221 +/- 26) mm(3), respectively.

CONCLUSIONSRPM could significantly increase the susceptibility of both androgen-dependent and -independent PC cells to DOC; the synergy of RPM and DOC was demonstrated. RPM enhanced the DOC-induced upregulation of caspase activity, resulting in an increasing number of cells in sub-G1 phases. The synergy of the combined treatment might be observed in both androgen-dependent and -independent PC cell lines.

Animals ; Antineoplastic Agents ; therapeutic use ; Cell Line, Tumor ; Drug Synergism ; Flow Cytometry ; Humans ; Male ; Mice ; Mice, Nude ; Prostatic Neoplasms ; drug therapy ; Random Allocation ; Sirolimus ; therapeutic use ; Taxoids ; therapeutic use ; Xenograft Model Antitumor Assays

Objective:To investigate the clinical, pathologic and radiologic features and molecular alterations in patients with primary cardiac leiomyosarcoma (PCLMS).Methods:Five cases of PCLMS were collected in Beijing Anzhen Hospital from January 2016 to December 2020. The clinical, pathologic and radiologic data, and molecular alterations were analyzed, and the patients were followed up.Results:All five patients were female, and had no history of leiomyosarcoma in other parts of the body. The age of patients ranged from 37 to 62 years (median 47 years). The main clinical symptoms were chest pain and dyspnea, one also presented with palpitation and lower limb weakness and one with dizziness. Two tumors were located in the left atrium, two in the right atrium, and one in the right ventricle, and they maximal diameter ranged from 2.5 to 14.0 cm (mean 6.2 cm). The neoplasms presented as medium-echo masses with a broad base in the echocardiography, and as a low-density, solid mass when detected by contrast-enhanced CT. Histologically, two tumors were well-differentiated and three were moderately and poorly differentiated, and two included extensive, loose myxoid stroma. Immunohistochemical staining showed that PCLMS was positive for SMA, desmin, MDM2, and epidermal growth factor receptor. Fluorescence in situ hybridization showed ALK gene rearrangement in two cases, and COL1A1-PDGFB fusion in three cases. All cases received surgical excision and two cases received chemotherapy. Three patients died within 0-11 months (mean survival of 7.7 months) and two patients were alive.Conclusions:PCLMS is a malignant tumor with a high recurrence rate and poor prognosis. These cases may provide useful information to improve the diagnosis and management of PCLMS.

OBJECTIVETo investigate the epidemic characteristics of etiological agents in children with hand, foot and mouth disease (HFMD) and analyze the differences between the severe and mild cases with HFMD seen from 2008 to 2009 in the Children's Hospital.

METHODSA total of 154 patients with HFMD were enrolled from May 2008 to September 2008 and from May 2009 to September 2009, including 28 severe HFMD patients. Data from 80 cases with suspected herpangina were collected as control. Enterovirus universal type, enterovirus type 71 (EV71) and coxsackie virus group A 16 (CA16) were detected by real-time RT-PCR respectively.

RESULTSThe positive rate of enterovirus universal type in the 154 patients with HFMD was 81.82%(126/154). EV71 positive rate in these 126 patients with enterovirus universal type infection was 57.14%(72/126). The positive rate of enterovirus universal type in the 80 cases with suspected herpangina was 68.75%(55/80). There was no EV71 infection in these 80 cases with suspected herpangina. EV71 infection was mainly popular in 2008. Both EV71 and CA16 were prevalent in 2009. The epidemic characteristics of enterovirus infection with HFMD between 2008 and 2009 had significant differences (χ(2) = 23.50, P = 0.000) (P < 0.01). The epidemic characteristics of enterovirus infection between severe and mild HFMD patients also had significant differences (χ(2) = 29.85, P < 0.01). There were 28 cases with severe HFMD, in whom the EV71 positive rate was 92.86% (26/28). EV71 positive rate in the mild HFMD was 36.51% (46/126) (χ(2) = 29.22, P < 0.01). There was no significant difference in the gender (χ(2) = 0.135, P = 0.714) and virus load (t = 0.141, P = 0.889) between the mild and severe HFMD cases. But the age of mild and severe HFMD showed a significant difference (t = 2.926, P = 0.009). Patients who were less than 2 years of age had a proportion of 88.89% (8/9) with severe HFMD. The mean age of mild HFMD patients was 3.19 years.

CONCLUSIONHFMD showed different epidemic characteristics at different times of enterovirus infection. There was no significant difference in the gender and virus load between the mild and severe cases with HFMD. Children under 3 years of age with EV71 infection were at high risk for severe HFMD.

Child ; Child, Preschool ; China ; epidemiology ; Coxsackievirus Infections ; epidemiology ; Enterovirus ; Female ; Hand, Foot and Mouth Disease ; epidemiology ; virology ; Humans ; Infant ; Male ; Viral Load

Objective To analyze the related factors regarding diabetic nephropathy (DN).Methods A total number of 756 diabetic patients from 2009 to 2011 were analyzed retrospectively.Three groups were formed according to the urinary albumin excretion rates (UAER).Patients with UAER＜20 μg/min was grouped to group A,with UAER from 20 to 200 μg/min as group B,and the others with UAER ≥200 μg/min was grouped to group C.General characteristics and laboratory parameters were then compared and related factors of DN analyzed.Results The constituent ratio of nephropathy was 30.2％ (228/756).Patient's age,duration of disease,both diastolic and systolic blood pressure of group A were significantly higher than the non-DN group (A) (P＜0.05).Patient's age,disease duration,both diastolic and systolic blood pressure of group C were (64.08± 11.71)years,(14.67± 7.34)years,(87.43 ± 14.36)mm Hg,(152.45 ± 18.48)mm Hg,respectively,with statistically significant difference (P＜0.05) between group C and group B.FPG,TG,TC,HDL-C,UA,HbAlc,FINS,FCP of group B were (9.27 ± 3.06) mmol/L,(1.98 ± 0.37) mmol/L,(5.01 ± 1.08) mmol/L,(1.05 ± 0.35) mmol/L,(312.78 ± 39.83) mmol/L,(9.33 ± 1.47)％,(11.45 ± 7.83) μU/ml,(509.73 ±132.78) pmol/L respectively,with significant difference (P＜0.05) between group B and group A.FPG,TG,HDL-C,UA,FINS,FCP of group C were (9.29 ± 3.12)mmol/L,(2.02 ± 0.36)mmol/L,(1.04 ± 0.27) mmol/L,(389.72 ± 46.32) mmol/L,(11.09 ± 8.29) μ U/ml,(575.77 ± 143.29) pmol/Lrespectively,with significant difference (P＜0.05) between group C and group A.UA,FINS,FCP were found with significant differences (P＜0.05) between group C and group B.Data from multivariate logistic regression showed that DNs were related with disease duration,BMI,systolic blood pressure,HbAlc,FPG,UA.Conclusion DN was closely related to the duration,age,blood sugar,blood lipids,blood pressure,uric acid levels of the disease.

OBJECTIVETo observe the expressions of nestin and glial fibrillary acidic protein (GFAP) and their association with reactive astrocytes following spinal cord injury in adult rats.

METHODSAdult rats with compression injury of the spinal cord were divided into 7 groups (n=6) and examined at 1, 3, and 5 days and at 1, 2, 4 and 8 weeks after the injury. The recovery of the locomotor function after the injury was evaluated with Basso, Beattie and Bresnahan (BBB) scale, and the degree and scope of the spinal injury were assessed using toluidine blue staining. Immunohistochemistry, double immunofluorescent labeling and an image analysis system were employed to observe nestin and GFAP expression and cell proliferation in different regions of the spinal cord.

RESULTSThe bilateral hind limb locomotor function of the rats declined severely 24 h after the spinal cord injury and underwent substantial recovery in 1 or 2 weeks after the injury, but followed by rather slow recovery afterwards. Toluidine blue staining of the spinal cord 24 h after the injury showed significant pathological changes in the neurons. The extension of the tissue injury increased with time till 1 week after the spinal cord injury. The site of injury and the adjacent tissues presented with markedly increased nestin and GFAP expressions 24 h after the injury, and nestin+/GFAP(-) cells dominated in the ependymal region around the central canal, whereas nestin+/GFAP+ dominated in the in other regions, showing significant difference from the control group. Nestin and GFAP expression reached the peak level 3 to 7 days after the injury and declined gradually till reaching nearly the control level at 2 weeks.

CONCLUSIONCompression injury of the spinal cord induces up-regulated expressions of nestin and GFAP, and nestin expression is positively correlated to the reactive astrocytes, which, along with the neural stem cells, respond to spinal nerve injury and possibly play a role in repair of the central nervous system injury.

Animals ; Astrocytes ; pathology ; Glial Fibrillary Acidic Protein ; biosynthesis ; genetics ; Intermediate Filament Proteins ; biosynthesis ; genetics ; Male ; Nerve Tissue Proteins ; biosynthesis ; genetics ; Nestin ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Spinal Cord Injuries ; metabolism ; pathology ; Stem Cells ; cytology ; metabolism ; Up-Regulation

Objective To investigate the effects of elemene combined with chemotherapy on S100A4 and MMP-9 protein expression in Lewis lung carcinoma mice and to explore the possible mechanism. Methods Twenty-four mice inoculated with Lewis cells were randomly divided into 4 groups,including lung carcinoma model group,chemotherapy group,elemene group,and combination group,6 mice in each group. On day 11 after inoculation, the mice in chemotherapy group were given intraperitoneal injection of etoposide (3 mg·kg-1·d-1)and cisplatin (3 mg·kg-1·d-1),the mice in elemene group were given intraperitoneal injection of elemene (100 mg·kg-1·d-1), the mice in the combination group were given intraperitoneal injection of elemene (100 mg·kg-1·d-1),etoposide (3 mg·kg-1·d-1),and cisplatin (3 mg·kg-1·d-1). After 7-day continuous treatment,the tumor body mass, spleen index, thoracic gland index, growth-inhibition rate, and metastasis-inhibition rate in various groups were measured,the contents of protein S100A4 and matrix metalloproteinase 9 (MMP-9)in tumor tissues were determined by enzyme-linked immunosorbent assay (ELISA),and the protein expression levels of S100A4 and MMP-9 were detected by immunohistochemical staining. Results In the combination group, the growth-inhibition rate and the inhibitory rate of metastases were increased obviously, the spleen index and thoracic gland index were also increased, the contents of S100A4 and MMP-9 were decreased, and the protein expression rates of S100A4 and MMP-9 were reduced(P < 0.05 or P < 0.01 compared with the chemotherapy group). Conclusion Elemene combined with chemotherapy could inhibit the Lewis lung carcinoma growth and metastasis in mice, and the possible mechanism might be associated with the decrease of S100A4 and MMP-9 protein expression in the tumor tissues.