Objective: To investigate the effect of fucoidan on multiple myeloma U266 cells and its possible molecular mechanism. Methods: The multiple myeloma U266 cells were treated with 10, 25 and 50 μg/mL fucoidan for 24, 48 and 72 h, respectively. The growth inhibitory rate of U266 cells was determined by cell counting kit-8 (CCK-8) assay. The apoptosis rate was measured by flow cytometry. The expression levels of RAS, p38, phospho-p38, sonic Hedgehog (Shh) and glioma-associated oncogene homolog 1 (GLI1) were detected by Western blotting. Results: The growth of multiple myeloma U266 cells treated with different concentrations of fucoidan (10, 25 and 50 μg/mL) was inhibited only in a dose-dependent manner. The apoptosis rates of U266 cells treated with 10, 25 and 50 μg/mL fucoidan for 24 h were (6.73±2.30)%, (9.12±1.90)% and (20.13±2.10)%, respectively, which were higher than that of the U266 cells without fucoidan intervention [control: (4.08±1.60)%; P < 0.05). The expression levels of RAS, phospho-p38, Shh and GLI1 proteins in U266 cells treated with fucoidan were significantly lower than that of the control (P < 0.05). Conclusion: Fucoidan inhibits proliferation and induces apoptosis of U266 cells by inhibiting Ras-p38MAPK and Shh-GLI1 signaling pathways. Copyright © 2013 by TUMOR.

Hematopoietic Stem Cell Transplantation ; adverse effects ; Humans ; Male ; Middle Aged ; Purpura, Thrombotic Thrombocytopenic ; etiology ; Transplantation, Autologous

Tumor lysis syndrome (TLS) occurs frequently in the chemotherapy of patients with hematologic malignancies; however, it is rarely reported in solid tumors. Because of the latent incidence, TLS is vulnerable to misdiagnosis or missed diagnosis, leading to a poor prognosis. TLS is characterized by hyperuricemia, hyperkalemia, hyperphosphatemia and hypocalcaemia, with some major complications such as acute renal failure and cardiac arrhythmias. Therefore,the key treatment strategies usually refer to appropriate prophylactic measures for high-risk patients, early diagnosis and aggressive therapy. This paper reviews 87 cases of TLS reported in the English literature and discusses its incidence, prevention and treatment.

OBJECTIVE: To explore the correlation between postmortem interval (PMI) and five RNA markers of rat's skin--β-actin, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), 18S ribosomal RNA(18S rRNA), 5S ribosomal RNA (5S rRNA), and microRNA-203 (miR-203), at different temperatures. METHODS: Eighteen SD rats were randomly divided into three environmental temperature groups: 4 °C, 15 °C and 35 °C, respectively. Skin samples were taken at 11 time points from 0 h to 120 h post-mortem. The total RNA was extracted from the skin samples and the five RNA levels were detected by real-time fluorescent quantitative PCR. Proper internal reference was selected by geNorm software. Regression analysis of the RNA markers was conducted by GraphPad software. RESULTS: 5S rRNA and miR-203 were most suitable internal references. A good linear relationship between PMI and RNA levels (β-actin and GAPDH) was observed in two groups (4 °C and 15 °C), whereas the S type curve relationship between the expression levels of the two markers (β-actin and GAPDH) and PMI was observed in the 35 °C group. The partial linear relationship between 18S rRNA and PMI was observed in the groups (15 °C and 35 °C). CONCLUSION Skin could be a suitable material for extracting RNA. The RNA expression levels of β-actin and GAPDH correlate well with PMI, and these RNA markers of skin tissue could be additional indice for the estimation of PMI.
Actins ; Animals ; Autopsy ; Glyceraldehyde-3-Phosphate Dehydrogenases/genetics* ; Postmortem Changes ; RNA ; RNA Stability ; RNA, Ribosomal, 18S ; Rats ; Real-Time Polymerase Chain Reaction ; Regression Analysis ; Skin ; Temperature

Adult ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Lead ; blood ; Lead Poisoning ; blood ; epidemiology ; Middle Aged

ObjectiveTo investigate the experience of resection of superior sulcus tumors using the improved antero-cervical parastemal approach.MethodsThe clinical data of 3 patients with superior sulcus tumor from July 2005 to May 2010 were analyzed retrospectively.Three patients with superior sulcus tumor underwent en bloc resection using the improved antero-cervical parastemal approach.The 1st to 3rd rib were excised,1 case with 1/5 centrum vertebra excision,1 case with the 1st transverse process of thoracic vertebra excision,1 case with the 1 st and 2nd transverse process of thoracic vertebra excision,1 case with T1 nerve root and sellate ganglion excision.ResultsAll the patients recovered well after operation.There was no serious complication except for 1 case with secondary Horner syndrome.The mild paradoxicalbreathing was found in 3 cases postoperative dressing change,but they had no dyspnea and tolerance well.The paradoxical breathing was disappeared when the mediastinum was fixed after 14 d thoracic wall pressure dressing.The pathological diagnosis after operation:2 cases with squamous-celled carcinoma,1 case with adenosquamous carcinoma,there was no mediastinal lymph node metastasis,cutting edge was negative.Stage:2 cases with T3N0M0,1 case with T4N0M0.Three cases were treated with chemotherapy (NP plan) for 4 cycles after operation without radiotherapy.Three cases were followed up for 53,37, 13 months after operation,they were all survival without recurrence and good quality life.ConclusionsFor the treatment of especially anterior and middle seated superior sulcus tumors,improved antero-cervical parasternal approach provides a safe and effective exposure.The improved antero-cervical parasternal approach is worthy of promotion.

Objective To discuss the clinical effects of hemiarthroplasty for the treatment of intertrochanteric comminuted fracture in aged patients.Methods From June 2006 to June 2010,91 cases with intertrochanteric comminuted fractures were treated by hemiarthroplasty using Zweymtüller long-stem cementless implant.There were 35 males and 56 females,with an average age of 81.2 years (range,75-94 years).There were fresh fractures in 75 cases and old fractures in 16 cases.According to classification of Evans-Jensen,there were 36 cases with type Ⅲ fracture and 55 with type Ⅳ.Osteoporosis was graded by Singh index,and there were 51 cases with level Ⅲ and 40 with level Ⅱ.The interval between injury and operation was 2-10 d (average,3.5 d).Results The surgery lasted 30-50 min (average,39 min).The blood loss was 320-610 ml (average,405 ml).The hospital stay was 14-21 d (average,16.5 d).Two cases who experienced with the infection of the respiratory system after operation,recovered through routine treatment.Thirty-seven cases were followed up for 15 to 38 months (average,24.5 months).According to the Harris score,the overall rate of excellent or good result was 83.8％ (31/37).Conclusion Hemiarthroplasty using Zweymüller long-stem cementless prosthesis is reliable option for intertrochanteric comminuted fracture in the aged patients.

Objective To explore the effect of advanced glycation end products (AGEs) on proliferation of bone marrow mesenchymal stem cells (MSCs) and related mechanism.Methods The bone marrow MSCs were isolated from male Sprague Dawley rats and cultured in vitro.The flow cytometer was used to identify the bone marrow MSCs by detecting positive labels (CD29 and CD90) and negative labels (CD34 and CD45).The advanced glycation end products-bovine serum albumin (AGE-BSA),one of the AGEs,was used in this study.The methyl thiazolyl tetrazolium (MTT) method was used to detect the effect of AGE-BSA on proliferation of the bone marrow MSCs.In MTT test,there were 3 groups:AGE-BSA group,BSA group,and control group.In AGE-BSA group,different doses of AGE-BSA (0,25,50,100 and 200 μg/ml) was used to stimulate the bone marrow MSCs for 6 h,12 h or 24 h.In BSA group,the 200 μg/ml BSA was used to stimulate the bone marrow MSCs for 6 h,12 h or 24 h.Gene chips detection was used to detect change of genes expression in bone marrow MSCs.Results The proliferation of the bone marrow MSCs could be inhibited by AGE-BSA,in a dose- and time-related manner.Compared with the BSA group,after being treated with 100 μg/ml AGE-BSA for 24 h or 200 μg/ml AGE-BSA for 12 h and 24 h,the proliferation of the bone marrow MSCs decreased obviously.The gene chips detection found that there were changes in expression of 17 genes in the bone marrow MSCs after being treated with AGE-BSA (200 μ.g/ml) for 12 h or 24 h,and the genes were same at the two time points.Among 17 genes,the expression of 12 genes increased,including four inflammatory factors (CCL3,CCL2,CCL4 and IL-1β),and 5 genes decreased.Conclusion AGE-BSA can inhibit the proliferation of bone marrow MSCs,which may be related to the onset of the diabetic osteoporosis.

Objective To investigate the feasibility of comprehensive assessment of the whole aorta and coronary arteries (CA) simultaneously with high-pitch 128-slice dual-source CT ECG-gated FLASH protocol.Methods A total of 48 consecutive patients with suspected aortic diseases underwent CTA examination of the whole aorta and CA using a ECG-gated FLASH CT protocol (pitch =3.2) without heart rate (HR) control.Aorta,aortic valves and CA were shown with different post-processing modalities.The image quality of the aorta,aortic valves and CA was evaluated and compared according to HR (low HR group ≤ 65 bpm,high HR group ＞ 65 bpm).The scan time,effective dose and contrast medium volume were recorded.Inter-observer differences were calculated by Kappa test.Differences between groups were analyzed by Mann-Whitney test with count data and variance test with measurement data.Results All examinations were completed successfully.The image quality was acceptable in the aorta,aortic valve (100％,48/48) and CA (94.0％,551/586).Percentage of diagnostic quality images was slightly higher in low HR group (94.7％,232/245,93.5％,319/341,Z =-2.504,P ＜ 0.05).Inter-reader reproducibility was 95.8％ (46/48) in the aorta and aortic valve,96.6％ (566/586) in CA,yielded good agreement (Kappa =0.81 and 0.89).The mean attenuation of aorta and CA were higher than 300 HU,especially in low HR group (357.0-446.0) HU.Except proximal segment of right CA,the CNR of whole aorta and coronary arteries were significantly higher in the low HR group (24.5-29.0) than that in the high HR group (20.0-23.1,P ＜0.05).SNR of the whole aorta was higher in the low HR group (13.7-17.9) than the high HR group (11.5-13.9,P ＜ 0.05).The mean scan time was (1.56 ± 0.08) s,effective dose was (4.12 ± 1.23) mSv (2.77-6.77 mSv),and contrast medium volume was (72.8 ± 2.1) ml.Conclusions CT angiography of whole aorta and coronary arteries could be performed simultaueously within 2 seconds with CT ECG-gated FLASH protocol.The images were of diagnostic quality for aortic and CA disease with low dose of radiation and contrast media.However,high HR could decrease the image quality of CA.

BACKGROUND: Thoracodorsal artery perforator flap can relieve damage to donor site and avoid bulk in the recipient site,but dissociation of perforating branch took time.Some one believed that it should be done by very experienced physicians and some muscle tissues should be reserved.OBJECTIVE: To investigate the method,effectiveness and clinical application of improved latissimus dorsi flap based on perforator flap conception for reconstruction of soft tissue defects of lower extremity.METHODS: A total of 17 patients needing skin flap transplantation were selected.12 latissimus dorsi musculocutaneous/muscle flaps,3 latissimus dorsi flaps with a few muscle and 2 double-leaf segmental latissimus dorsi compound flaps were designed based on perforator flap conception.According to the territory of latissimus dorsi musculocutaneous flap,a skin paddle in which anterior underlying muscle and main perforator was designed,extend about to the anterior edge of the latissimus dorsi muscle.An additional latissimus dorsi muscle flap was selected for soft tissue enlargement if necessary.Sometimes,double-leaf segmental latissimus dorsi musculocutaneous/muscle flap,including one muscle-sparing latissimus dorsi musculocutaneous flap and the other segmental latissimus dorsi muscle flap nourished by the lateral branches of the thoracodorsal vessels was selected to repair two adjacent defects.The harvested tissue area ranged from 12 cm×8 cm to 28 cm×17 cm.Survival state of skin flap,together with shape and function of donor site and recipient site of skin flap were observed.RESULTS AND CONCLUSION: Following skin flap transplantation,one case developed vascular crisis that was relieved following re-exploration for vessel anastomosis.All skin flap survived.Second-stage skin grafting was done on one muscle flap wound.All donor sites were sutured directly.After a follow-up of 3 to 18 months in 15 cases,only two cases received two-stage plastic operation because bulky flaps brought some trouble in wearing shoes.Improved latissimus dorsi flap based on perforator flap conception can reduce damage to the donor site and the receipt area bulk.Double-leaf segmental latissimus dorsi compound flaps can repair both heel and toe wound.The versatile latissimus dorsi flap designed using thoracodorsal artery perforator flap conception is an ideal flap for repairing widespread soft tissue defects in the lower extremity.