China ; Health Surveys ; Humans ; Physical Fitness ; Students

Background and purpose:Solitary plasmacytoma of bone(SBP) is a rare disease,reports releveant to this disease are rarely seen. The purpose of this study was to investigate the relation between the clinical features and the prognosis of solitary plasmacytoma of bone. Methods:We reviewed the data of 12 patients diagnosed with solitary plasmacytoma of bone from 1998 to 2007 in Peking University third hospital,the clinical features,treatment and prognosis of the patients were analyzed retrospectively. Results:The age ranged from 37-71 years(mean 49.6 years) ,the male/female ratio was 3 to 1. Immunophenotype analysis showed that 11(91.6%) cases were positive for CD79a,10(83.3%) positive forVS38C,and all negative for CD20. With 12 to 87 months follow-up(average 40?22 months) ,three cases(33%) developed to multiple myeloma,two of them died from infection,the median survival time was 73 months,the 3 year and 5 year survival rate were 90 percent and 75 percent respectively. Conclusion:Middle and old male are more likely to develop SP. The prognosis is good,but some of them can progress to multiple myeloma.

To determine the etiologic agent of an outbreak of influenza viruses from Changsha Foothill Mountain International School in 2009, and to analyze the HA Gene Characteristic of the H1N1 influenza viruses. Twenty-five nasopharyngeal swab specimens from the outbreak of influenza viruses were tested by conventional RT-PCR and influenza viruses isolated simultaneously. Virus isolated (A/Yuelu/314/2009) from the outbreak was sequenced by CEQTM 8000 Genetic Analysis System and the sequencing results submitted to GenBank (Accession No: FJ912843), then the sequencing data was analyzed by ClustalX and Mega4.1softwares. Results showed the influenza viruses A(H1N1) of positive were 18 cases by influenza viruses isolated tests and 21 cases by conventional RT-PCR, respectively. The nucleotide and amino acid sequence homology of the HA gene of A/Yuelu/314/2009 are 99% compare with the vaccine strain (A/Brisbane/59/2007) in 2008~2009 years. The HA sequence data also showed that had 6 amino acid mutations (V148A, S158N, G202A, I203D, A206T, W435R), and the S158N located at antigenic site B of HA protein. Nine potential glycosylation sites (27, 28, 40, 71, 151, 176, 303, 497, 536) in the HA sequence of A/Yuelu/314/2009 is the same with A/Brisbane/59/2007, and the sequences of potential glycosylation sites were conserved. In this study, laboratory evidence diagnosed seasonal influenza A virus (H1N1) as the etiologic agent of the outbreak. The virus isolated (A/Yuelu/314/2009) strain of H1N1 subtype is not a new variant in Changsha in 2009 compare with the vaccine strain (A/Brisbane/59/2007), the outbreak of influenza A virus (H1N1) from Changsha Foothill Mountain International School maybe are caused by the change in genetic characteristics between vaccine strains and the decreased of immunity to influenza A virus (H1N1) in the crowd.

Objective To evaluate the sensitivity of patient-specific volumetric-modulated arc therapy (VMAT) quality assurance (QA) to minor multileaf collimator (M LC) positioning errors.Methods Systematic multileaf collimator (MLC) positioning errors (+0.5 mm,+ 1 mm and +2 mm) were introduced into the clinical VMAT patient plans with 2 types of MLC positioning errors:systematic MLC gap width errors and systematic MLC shift errors for 6 cases,including 3 cases with prostatic cancer and 3 cases with nasopharyngeal cancer.The planar dose distributions of the original and modified plans were measured using ArcCheck array.The coincidence between the measured results and the calculated results was evaluated using both absolute distance-to-agreement (AD-DTA) analysis with 3％/3 mm and 2％/2 mm criteria.Results The average passing rate of the 6 original VMAT plans was 96.0％ with the ADDTA criteria of 3％/3 mm which was commonly adopted in clinical practice.For the MLC gap width errors of + 1 mm,+2 mm,and-2 mm and the MLC shift errors of 2 mm,the drop levels in average passing rate with the AD-DTA criteria of 3％/3 mm were 8.8％,15.5％,6.1％ and 7.9％,respectively.The + 2 mm MLC positioning errors and + 1 mm MLC gap width errors could be detected by the patient-specific VMAT QA procedure.The AD-DTA criteria of 2％/2 mm was more sensitive compared with the criteria of 3％/3 mm.Conclusions Patient-specific VMAT QA is not sensitive enough to detect the systematic MLC positioning errors within 1 mm.Additional MLC QA is needed to guarantee the accuracy of VMAT delivery.

Humans ; Intestines ; Stomach Neoplasms/complications*

Objective To explore clinical characteristics of diagnosis and treatment of solid-cystic papillary tumor(SCPT) of the pancreas in children.Methods There were retrospectively analyzed about the 7 patients treated in our hospital for SCPT,with the ave-rage age of 11.5 years.All patients complained abdominal pain following a trauma(71.4%) or overeating(28.6%).The main presentation was abdominal mass.Of the 7 patients,4 received distal pancreatectomy,2 pancreatico-duodenectomy,and 1 only biopsy.Results The nicks of all patients were primany hed.All patients were pathologically confirmed as SCPT after operation.All patients were followed up for 4 monthes to 4.5 years,the recent result was well.Conclusions SCPT is a low-grade malignant tumor,which is often asymptomatic,but the patients with symptoms generally suffer from an abdominal mass or abdominal pain.The prognosis is excellent after operation.

Adult ; Enzyme-Linked Immunosorbent Assay ; Female ; HSP70 Heat-Shock Proteins ; blood ; Humans ; Lead ; toxicity ; Male ; Occupational Exposure

OBJECTIVETo study the effect of growth hormone (GH) combined with Radix Dipsaci on the body growth and the bone mineral content (BMC) of hypophysectomized rats.

METHODSThe GH deficiency rats model was established using the hypophysectomized operation through the skull and the throat. Qualified rats were divided into the sham-operation group (n = 15), the negative control group (n = 13), the GH intervention group (n = 13), and the GH combined with Radix Dipsaci group(n = 12). GH (0.25 mg/kg) was subcutaneously injected from the cervical part in the GH intervention group and the GH combined with Radix Dipsaci group at the same time, while equal volume of normal saline was injected to the rest groups. 0.7 mL/100 kg Radix Dipsaci was given by gastrogavage to the GH combined with Radix Dipsaci group at the same time, while equal volume of normal saline was given by gastrogave to the rest groups. The body weight, the tail length, and the body length were measured during the intervention period. Blood was withdrawn after 14-day intervention. The femoral bone and the tibial bone were taken out. The levels of GH, insulin-like growth factor 1 (IGF-1), alkaline phosphatase (ALP), and osteocalcin (OC) were measured. The width of the tibial epiphyseal plate was measured. The bilateral femur bone mineral density (BMD) and BMC were measured using the dual energy X-ray absorptiometry.

RESULTSThe body weight, the body length, the length of the femoral bone, the length of the tibial bone, the width of the epiphyseal plate, the levels of the GH, IGF-1, ALP, and OC increased in the GH intervention group and the GH combined with Radix Dipsaci group after 2-week intervention, showing statistical difference when compared with the model group (P < 0.01). But there was no statistical difference in the tail length though it also increased (P > 0.05). There was insignificant difference in the aforesaid indices between the two groups (P > 0.05). Compared with the model group, the BMD of the GH combined with Radix Dipsaci group increased with statistical difference (P < 0.01). Compared with the model group, the BMC of the GH intervention group and the GH combined with Radix Dipsaci group increased with statistical difference (P < 0.01). It was highest in the GH combined with Radix Dipsaci group (P < 0.01).

CONCLUSIONSGH combined with Radix Dipsaci showed unobvious effect on promoting the growth. But it could elevate BMD and BMC, and improve the bone metabolism.

Animals ; Bone Development ; drug effects ; Bone and Bones ; metabolism ; Dipsacaceae ; chemistry ; Drugs, Chinese Herbal ; pharmacology ; Growth Hormone ; pharmacology ; Hypophysectomy ; Male ; Rats ; Rats, Sprague-Dawley

Adult ; Ear Canal ; pathology ; Ear Diseases ; pathology ; Fasciitis ; Humans ; Male

Objective To analyze the outcomes of radiotherapy for 74 patients with intracranial ger-minoma. Methods Between 1990 and 2007,74 patients with intracranial germinoma(9 pathologically diag-nosed and 65 clinically diagnosed) were treated with radiotherapy in our hospital. The median age at diagno-sis was 15 (range 5-45) years. Radiation treatment fields varied among patients, including craniospinal irra-diation(CSI), whole brain irradiation, whole ventricular irradiation with primary tumor boost, and involved-field irradiation only to the primary tumor plus margin. The dose was 38.5 -50.0 Gy to the tumor,18-25 Gy to the whole brain/ventricular,and 21-25 Gy to the whole spinal cord in fractions of 1.6-2.0 Gy per day,5 fractions per week. Results The median follow-up time was 80(range 12-168) months and the fol-low-up rate was 97%. Fourteen patients had been followed up for over 10 years. The 1-,5- and 10-year o-verall survival rates were 99% ,96% and 93%. The corresponding disease free survival rates were 97%, 90% and 83%, respectively. Relapses occurred in 9 patients. For the 6 patients with in-field relapse, the dose to the tumor was 38.5-40.0 Gy in 3 patients, 41-45 Gy in 2 and 46-50 Gy in 1. Relapse in the spinal cord was found in 3 patients and none of them received spinal irradiation. Twenty-one patients re-quired hormonal replacement therapy because of radiation induced hypofunction of prehypophysis. Conclu-sions Radiotherapy alone is a curative treatment for intracranial germinoma. The proper dose should be de-termined by tumor numbers and the examination of cerebrospinal fluid.