Endosonography ; Esophageal Neoplasms ; diagnostic imaging ; radiotherapy ; Humans ; Image Processing, Computer-Assisted ; Lymph Nodes ; diagnostic imaging ; pathology ; Positron-Emission Tomography ; Radiotherapy Dosage ; Radiotherapy Planning, Computer-Assisted ; methods ; Radiotherapy, Conformal ; Tomography, X-Ray Computed ; Tumor Burden

Exposure to thermal environment is one of the main concerns for manned space exploration. By focusing on the works performed on thermoregulation at microgravity or simulated microgravity, we endeavored to review the investigation on space thermal environmental physiology. First of all, the application of medical requirements for the crew module design from normal thermal comfort to accidental thermal emergencies in a space craft will be addressed. Then, alterations in the autonomic and behavioral temperature regulation caused by the effect of weightlessness both in space flight and its simulation on the ground are also discussed. Furthermore, countermeasures like exercise training, simulated natural ventilation, encouraged drink, etc., in the protection of thermoregulation during space flight is presented. Finally, the challenge of space thermal environment physiology faced in the future is figured out.
Aerospace Medicine ; Body Temperature Regulation ; Environment ; Exercise ; Humans ; Space Flight ; Weightlessness ; Weightlessness Simulation

Medical molecular imaging not only promotes the development of medical imaging, but also pushes research progress of life science and benefits the amalgamation of multi-subjects in medical imaging. This editorial overviews the history and development trends of medical molecular imaging.
Humans ; Molecular Imaging ; trends

OBJECTIVE To study the prevention strategy of community-acquired pneumonia(CAP) for retired old cadres of PLA.METHODS We adopted the first and second prevention strategy of disease to deduce the frequency for CAP.RESULTS The old cadres were divided into common prevention group and important prevention group by evaluating their body condition.The common prevention group was taken the first prevention strategy:healthy education,inhabit surroundings improvement and proper exercises.The second prevention was carried out to personnel who have chronic disease of respiratory organs which included eliminating the risk factors and making efforts to find, diagnose and treat infection as early as possible.CONCLUSIONS The first and second prevention is an effective working mode which improves the level of CAP prevention.

Cancer has become the leading cause of mortality in the urban area of China. Whole body diffusion weighted imaging (WB-DWI), also known as virtual positron emission tomography, has gradually become accepted as an image tool in tumor localization, characterization, staging and monitoring response to therapy or tumor recurrence. Our article aimed to summarize the limited initial clinical use of WB-DWI in the referred area, and to analyze the most potential advantage of WB-DWI in therapeutic monitoring and tumor staging. WB-DWI as a highly sensitive, completely non-invasive, well-tolerated and low price technique has a promising furture in tumor assessment. Profound clinical study is necessary for its further application improvement.
China ; Diffusion Magnetic Resonance Imaging ; methods ; Humans ; Neoplasm Staging ; Neoplasms ; diagnosis ; pathology ; Whole Body Imaging ; methods

Particle radiotherapy using proton and heavier-ion beam was first proposed for clinical application by Robert Wilson in 1946. Compared to conventional photon radiation, proton and heavier-ion beam has significant physical advantage, and heavier-ion has unique biological characteristics. With the development of accelerator and radiation technique, it is being investigated for tumor treatment in many clinical centers. This article reviews the current status of clinical application of particle therapy using proton and heavier-ion beam in digestive system tumor.
Animals ; Digestive System Neoplasms ; therapy ; Heavy Ion Radiotherapy ; Heavy Ions ; therapeutic use ; Humans ; Protons ; therapeutic use

Objective To detect methylation of p16 gene in lung cancer tissues of non-small cell lung cancer patients,and to approach its clinical diagnostic value.Methods The methylation of p16 gene in DNA from 47 non-small cell lung cancer tissues and corresponding nomalignant tissues were tested with methylation-specific PCR(MSP).Results The total frequency of p16 methylation was significantly higher in lung cancer tissues than that in the corresponding malignant tissue(44.7%vs 17%)(P＜0.01).But there was no significant difference in detectiveness,clinical staging,clinical pathology type and clinical classification(P＞0.05).Conclusion The detection of methylation of p16 gene may be helpful to clinical diagnosis for non-small cell lung cancer,but its specify,sensitivity and feasibility need to be further studied.

Water soluble extract (WSE) is an important index for the quality evaluation of Astragali Radix (AR). In this study, the WSE of the wild AR from Shanxi province (SX) and the cultivated AR from Gansu Province (GS) were compared. The WSEs of two types of AR were determined according to the appendix of Chinese pharmacopoeia. Then the WSEs were subjected to NMR analysis, and the obtained data were analyzed using HCA, PCA, OPLS-DA, microarray analysis, and Spearman rank analysis. In addition, the Pearson correlation of differential metabolites were also calculated. The results showed that the WSE content of GS-AR (37.80%) was higher than that of SX-AR (32.13%). The main constituent of WSE was sucrose, and other 18 compounds, including amino acids, organic acids, were also detected. Multivariate analysis revealed that SX-AR contained more choline, succinic acid, citric acid, glutamate, taurine and aspartate, while GS samples contained more sucrose, arginine and fumaric acid. In addition, the Pearson correlations between different metabolites of the two types of AR also showed apparent differences. The results suggested that the WSE of two types of AR differs not only in the content, but also in the chemical compositions. Thus, the cultivation way is important to the quality of AR. This study supplied a new method for the comparison of extract of herbal drugs.
Arginine ; analysis ; Aspartic Acid ; analysis ; Choline ; analysis ; Citric Acid ; analysis ; Drugs, Chinese Herbal ; analysis ; chemistry ; Fumarates ; analysis ; Glutamic Acid ; analysis ; Magnetic Resonance Spectroscopy ; Multivariate Analysis ; Phylogeography ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry ; Succinic Acid ; analysis ; Sucrose ; analysis ; Taurine ; analysis

OBJECTIVETo investigate the expression of microRNA-10a-5p (miR-10a) in laryngeal epithelial premalignant lesions (LEPL) and to analyze the correlations of its dysregulation with clinicopathologic parameters of LEPL.

METHODSAccording to the WHO classification (2005), 94 cases of LEPL were grouped into mild dysplasia (MID), moderate dysplasia (MOD), severe dysplasia (SD) and carcinoma in situ ( CIS). The expression of miR-10a in 94 cases of LEPL was detected by quantitative real-time polymerase chain reaction (qRT-PCR), and correlated with the clinical and follow-up data of all LEPL patients.

RESULTSmiR-10a was down-regulated in LEPL with increasing grade of dysplasia. There was significantly statistical difference between low-risk ( MID + MOD) and high-risk ( SD + CIS) lesion groups (P = 0.03). The linear regression analysis showed that miR-10a was correlated with grade and gender of LEPL (P < 0.05).

CONCLUSIONSDown regulation of miR-10a may be a useful molecular marker for grading of LEPL and diagnosis of early laryngeal cancer.

Biomarkers ; Carcinoma in Situ ; metabolism ; pathology ; Down-Regulation ; Humans ; Hyperplasia ; pathology ; Laryngeal Neoplasms ; metabolism ; pathology ; Larynx ; pathology ; MicroRNAs ; metabolism ; Precancerous Conditions ; metabolism ; pathology ; RNA, Neoplasm ; metabolism ; Real-Time Polymerase Chain Reaction

0.05).The different tilt angles impacted patients' fear psychology(?2=8.038,P=0.018).The order of the extent of children's fear psychology represented from low to high at the angle of 60?,70? and 80?,respectively.The extent of the children's fear psychology had positive correlation with the tilt angle(r=0.669,P=0.002).Conclusions The tilt test angle does not affect the positive rate of HUTT and the hemodynamics in children undergoing HUTT with angles from 60? to 80?.The children at the tilt angle 60? had less fear than at the angle of 70? or 80?.The 60? tilt angle of HUTT in children is recommended in the clinical practice.