Child, Preschool ; Humans ; Hypercalcemia ; etiology ; Male ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; complications

Epigenetic changes, including abnormal DNA methylation, have been identified to play significant roles in tumor initiation and progression. Recently, mutations of DNMT3A were identified in acute myeloid leukemia (AML), which possibly caused changes in DNA methylation, and indicated a poor prognosis. Sequencing analysis showed that most of the mutations were single nucleotide variations, including a hotspot Arg882. DNMT3A mutations were detected in about 20% AML patients, and closely associated with the age over 60, the M(4), M(5) subtypes and intermediate-risk cytogenetics. Others showed that these alterations also present in myelodysplastic syndrome (MDS) and primary myelofibrosis (PMF) prior to development of the obvious leukemia, indicating that these mutations might contribute to leukemogenesis. However, its prognostic value of minimal residual disease and role of therapeutic targets are still unclear, focusing on a large cohort of AML patients will solve these issues. In this review, the achievement in studying DNMT3A gene mutation are summarized, and the latest research progress is briefly discussed.
DNA (Cytosine-5-)-Methyltransferases ; genetics ; DNA Methylation ; Humans ; Leukemia, Myeloid, Acute ; genetics ; Mutation

Animals ; Disease Models, Animal ; Hypoglycemia ; chemically induced ; metabolism ; Hypothalamus ; drug effects ; metabolism ; Insulin ; pharmacology ; Intracellular Signaling Peptides and Proteins ; metabolism ; Male ; Neuropeptides ; metabolism ; Orexins ; Rats ; Rats, Sprague-Dawley

The status of marine bioresources and the marine eco-environment issues were summarized and discussed, and the strategies for the development of Chinese marine bioresources in the future were proposed. The degradation of marine eco-environment and unreasonable exploitation of the resources resulted in acute decline of Chinese marine bioresources. The feasible stratagies for the sustainable use of marine bioresources should be to intensify the basic research on marine bioresources science, to strengthen the protection of the marine environment and conservation of marine living resources, and to exploit and utilize marine bioresources scientifically and reasonably by using high-technology including marine biotechnology.

Objective：The aim of this study was to investigate the relationship among the telomerase reverse transcriptase (TRT), the heparanase gene expressions, and the metastasis and prognosis of colorectal cancer. Method： The expression of TRT in 33 cases of formalin fixed, paraffin embedded colorectal adenocarcinoma tissues was examined using antibody of human TRT and Streptavidin HRP(SP) immunohistochemical method, meanwhile metastasis and 5 year survival rate of the patients were analyzed. The expression of heparanase gene in tweenty fresh colorectal carcinoma tissues were also analyzed by reverse transcriptase polymerase chain reaction (RT PCR). Results： The expression of TRT was found positive in all 33 patients with colorectal cancer, of which 14 cases were strongly positive and 19 weakly positive. TRT was expressed diffusely in the cytoplasm and partly in the nuclei of the cancer cells. Whereas only minimally or weakly positive signals for TRT located mainly in the nuclei with few cytoplasm around, were found in normal or in proliferative colorectal mucosa. The metastatic rate and the 5 year survival rate in tumors with strong expressing TRT were 50.0％ (7/14) and 21.4％ (3/14), respectively, whereas in those with weak expressing TRT were 15.8％ (3/19) and 84.2％ (16/19), respectively. There were significant differences between two groups in the metastatic rate (P< 0.05) and the 5 year survival rate (P < 0.001).The expression of heparanase gene was found positive in 20/20 cases of colorectal carcinoma when RT PCR using 0.5 μ g total RNA but positive was only in 11/20 cases of the cancer when using 0.1 μ g total RNA. The positive rate for metastatic tumors was 90.0％ (9/10), whereas for non metastatic tumors it was only 20.0％ (2/10) when using 0.1 μ g templet of total RNA. Five cases of normal colorectal mucosa were negative for heparanase. Conclusions： The expression of TRT may be corresponding to metastatic rate and 5 year survival rate. The expression of heparanase gene may be related to the malignant degree and metastasis of colorectal cancer. Both TRT and heparanase may be important new markers for predicting the prognosis of the patients with colorectal cancer.

OBJECTIVETo compare the efficacy and safety of a single ceftriaxone injection with 10-day oral amoxicillin in the treatment for children's acute otitis media.

METHODSThis study was a prospective, comparative, open randomized, multicenter trial. In the ceftriaxone group, a single dose sodium ceftriaxone (50 mg/kg, total dose < 1 g) was injected. In the amoxicillin group, the oral amoxicillin [40 mg/(kg.d), tid] was used for 10 days. Totally 236 cases aged from 0.5 to 12 years were enrolled and 212 cases completed the study. These patients were followed up twice and clinical signs and symptoms were recorded, otoscopy, peripheral blood WBC count, hearing test (pure tone test) and tympanography were performed.

RESULTSIn the ceftriaxone group, 103/106 cases were cured or improved (97.17%), while in the amoxicillin group 96/106 cases were cured or improved (90.57%) (P < 0.05). Ceftriaxone was significantly better than amoxicillin in the treatment. Totally 4 cases had side effects such as papular skin rash, urticaria around mouth, skin pigmentation, two cases in the ceftriaxone group and other two cases in the amoxicillin group. There was no significant difference between the 2 groups in side effects.

CONCLUSIONCeftriaxone injection was significantly better than ten-day oral amoxicillin for treatment of acute otitis media in children. The single dose regimen with ceftriaxone seems to be a good choice for children, particularly for.

Acute Disease ; Administration, Oral ; Amoxicillin ; adverse effects ; therapeutic use ; Anti-Bacterial Agents ; adverse effects ; therapeutic use ; Ceftriaxone ; adverse effects ; therapeutic use ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Male ; Otitis Media ; drug therapy ; Prospective Studies ; Treatment Outcome

Animals ; Behavior, Animal ; drug effects ; Depressive Disorder ; drug therapy ; psychology ; Eleutherococcus ; Male ; Plant Extracts ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Stress, Psychological

Objective To observe toxic effect of deoxynivalenol(DON)on articular cartilage and synovium of New Zealand rabbits's knee ioints.Methods Fifteen male rabbits were divided randomly into 3 groups:control, high-dosage,and low-dosage group.In high-dosage and low-dosage group,saline solution of DON was injected with a dose of 0.10 and 0.05 ms/kg every 48 h into ear vein of rabbits.Specimen of articular cartilage and synovium were through pathologY methods,and IL-1β,TNF-α,NO levels were assayed in joint liquid,after 20 days. Results Morphological changes were observed, such as synovium inflammative infiltration, chondrocytes deformation and necrosis under light microscope.The levels of IL-1β,TNF-α and NO had statistical significance in comDarison between 3 grouPs(F=19.396,18.195,22.136,P＜0.05).The levels of IL-1β,TNF-α and NO were significantly higher(all P＜0.05),high-dosage[(0.451±0.091),(0.575±0.122)μg/L;(70.27±11.53)μmol/L] and low-dosage group[(0.295±0.107),(0.387±0.131)μg/L;(45.32±12.24)μmol/L]compared with control ((0.1 13±0.049),(0.138±0.087)μg/L;(23.56±9.35)μmoL/L],and high-dosage compared with low-dosage group Conclusions DON results in articular and synovial impairment,which has the symptom similar to osteoarthritis. DON probably causes osteoarthritis.

Objectives: to verify the feasibility and reliability of the electronic version of Chinese SF-36 based on the Quality-of-Life-Recorder. Design: A crossover randomized controlled trial, comparing a paper-based and an electronic version of the Chinese SF-36, was conducted. According to generated random numbers, interviewees were asked to fill out either the electronic version or the paper version first. The second version was filled in after a pause of at least 10 min. Settings and participants: One group of 100 medical students at the School of Medicine of Zhejiang University and the other group of 50 outpatients at a clinic for general practice in Hangzhou City (China) were eventually recruited in this study. Results: The acceptance of the electronic version was good (60% of medical students and 84% of outpatients preferred the electronic version). At the level of eight-scale scores, the mean-difference for each scale (except for general health) between the two versions was less than 5%. At the level of 36 questions, the percentage of "exact agreement" ranged within 64%～99%; the percentage of "global agreement" ranged within 72%～99%; 77% of the kappa coefficients demonstrated "good/excellent agreement" and 23% of the kappa coefficients demonstrated "medium agreement". Conclusion: This study, for the first time, can provide empirical basis for the confirmation of the feasibility and reliability of the electronic version of the Chinese SF-36 and may provide an impulse towards widespread deployment of the Quality-of-Life-Recorder in Chinese populations.

OBJECTIVETo investigate the effect of thymosin alpha 1 on cellular immune function in the elderly patients with malignant tumor.

METHODSThirty patients with malignant tumor were injected with thymosin alpha 1 subcutaneously at the dose of 1.6 mg q.d. for the first month and q.o.d. for the following month. The number of T cell subgroups and the activity of NK cell in peripheral blood were detected and the quality of life of the patients were evaluated before treatment and at the end of treatment.

RESULTTreatment of thymosin alpha 1 increased the number of CD4 cells and improved the NK activity, and also improved the quality of life of the elderly patients with malignant tumor. There were no side effects found.

CONCLUSIONThymosin alpha 1 can enhance the cellular immune function of the elderly patients with malignant tumor.

Aged ; Aged, 80 and over ; CD4 Lymphocyte Count ; Female ; Humans ; Killer Cells, Natural ; drug effects ; immunology ; Male ; Neoplasms ; drug therapy ; immunology ; psychology ; Quality of Life ; Thymosin ; analogs & derivatives ; pharmacology ; therapeutic use