With the development of ultrasonic imaging technique,the thyroid nodule detection rate is ever increasing.However,there is still no unique characteristic for the identification of benign and malignant lesions in ultrasonogram.On the basis of conventional ultrasound performance of nodules,thyroid imaging reporting and data system for the correct classification of thyroid nodules is conducive to their differential diagnosis.Contrast enhanced ultrasound (CEUS) can show the microvascular status of the lesion,and the benign and malignant thyroid nodules can be analyzed by observing the different enhancement patterns.By evaluating the difference in hardness between different tissues,the ultrasonic elastography (.UE) provides a complementary method for the identification of benign and malignant thyroid nodules.Ultrasound-guided fine-needle aspiration biopsy (US-FNAB) can accurately locate and offer pathological basis for preoperative diagnosis of thyroid nodules.It is helpful to preoperatively diagnose the thyroid cancer by detecting the molecular marker of the biopsy specimens which are difficult to be diagnosed clearly.

Objective To study the effects of resveratrol against toxicity induced by arsenic trioxide in rats.Methods Arsenic trioxide was given to SD rats intraperitoneally for 4 weeks.Resveratrol was injected intraperitoneally to the animals 4 h before arsenic trioxide challenge at dose of 30,60,or 120 mg?kg-1?d-1.Four weeks later,the contents of malondialdehyde(MDA),superoxide dismutase(SOD),nitric oxide(NO),glutathione peroxidase(GSH-Px) in serum,lung,spleen,liver and brain tissues were measured.Results Compared with the normal control rats,arsenic trioxide challenge resulted in increases of NO and MDA contents in serum,lung,spleen,liver and brain tissues,and decreases of GSH-Px and SOD levels in the rats received arsenic trioxide only.Resveratrol significantly inhibited these changes induced by arsenic trioxide in rat serum,lung,spleen,liver and brain tissues in a dose-dependent manner.Conclusion Resveratrol can protect antiperoxidase activity and inhibit peroxide productions.

Objective:To observe the influence of inhaled anesthetic isoflurane in the neuronal protein damage and aggregation in the APP transgenic mouse hippocampus,and to investigate the intervention effect of trehalose. Methods:Sixty APP transgenic mice aged 12 months were divided into control group,isoflurane group (Iso group) and trehalose group (Tre group)(n=20).The rats in control group were not given any drugs and were put into the anesthetic box with continuonsly entering 2 L·min-1 oxygen for 2 h;the rats in Iso group and Tre group were respectively injected intraperitoneally with 2 mL saline or trehalose (400 μg·kg-1 )30 min before anesthesia,and then inhalated 1.4% isoflurane for 2 h.6 h after anesthesia,the hippocampus tissue of the mice was prepared,and DCFH-DA fluorescence was applied to detect the reactive oxygen species (ROS)level; 24 h after anesthesia, immunohistochemical method and Western blotting method were used to detect the contents of carbonyl compounds and nitrotyrosine and the Aβ1-42 protein expression level in hippocampus;TEM was applied to observe the formation of protein aggregates; TUNEL staining was performed to observe the apoptotic rate of hippocampal neurons. Results:Compared with control group, the ROS level, the expression levels of oxidative protein carbonyl compounds and nitrotyrosine,the expression level of Aβ1-42 protein,and the apoptotic rate of hippocampal neurons in Iso group were significantly increased (P < 0.05);compared with Iso group,the ROS level,the expression levels of oxidative protein carbonyl compounds and nitrotyrosine,the Aβ1-42 protein expression level, and the apoptotic rate of hippocampal neurons in Tre group were significantly decreased (P < 0.05).Conclusion:Isoflurane can induce the protein damage and aggregation,the apoptotic rate of hippocampal neurons,aggravate oxidative stress reaction,increase the apoptotic rate of brain hippocampal neurons in the APP transgenic mice;trehalose can intervene the neurotoxicity induced by inhaled anesthetics.

AIM　To analyze tanshinone IIA in Salvia miltiorrhiza Bunge by supercritical fluid extraction (SFE) coupled with capillary gas chromatography (CGC). METHODS　The solution pressure was predicted by solubility parameter theory, the extraction conditions were confirmed by orthogonal design in which temperature, volume of modifier and dynamic extracting volume had been studied in three levels. RESULTS This method is quick, convenient, precise and accurate, added sample recovery is 95.3%, RSD=4.27%. CONCLUSION　Compared with the method of ultrasonic extraction, significantly better qualitative and quantitative result could be obtained by SFE-CGC and expend less organic solvent then make less pollution.

To enhance the fusion of graft bone in thoracolumbar vertebrae and minimize the postoperative loss of correction, short-segment pedicle screw fixation was reinforced with posterior moselizee bone grafting in vertebrae for spinal fusion in patients with thoracrolumbar vertebrate fractures. Seventy patients with thoracrolumbar vertebrate fractures were treated by short-segment pedicle screw fixation and were randomly divided into two groups. Fractures in group A (n=20) were reinforced with posterior morselized bone grafting in vertebrae for spinal fusion, while patients group B (n=50) did not receive the morselized bone grafting for bone fusion. The two groups were compared in terms of kyphotic deformity, anterior vertebral height, instrument failure and neurological functions after the treatment. Frankel grading system was used for the evaluation of neurological evaluation and Denis scoring scale was employed for pain assessment. The results showed that the kyphosis correction was achieved in both group A and group B (group A: 6.4 degree; group B: 5.4 degree)/ At the end of follow-up, kyphosis correction was maintained in group A but lost in group B (P=0.0001). Postoperatively, greater anterior height was achieved in group A than in group B (P<0.01). During follow-up study, anterior vertebral height was maintained only in Group A (P<0.001). Both group A and group B showed good Denis pain scores (P1 and P2) but group A outdid group B in terms of control of severe and constant pain (P4 and P5). By Frankel criteria, the changes in neurological functions in group A was better than those of group B (P<0.001). It is concluded that reinforcement of short-segment pedicle fixation with morselized bone grafting for the treatment of patients with thoracolumbar vertebrae fracture could achieve and maintain kyphosis correction, and it may also increase and maintain anterior vertebral height. Morselized bone grafting in vertebrae offers immediate spinal stability in patients with thoracolumbar vertebrate fractures, decreases the instrument failure and provides better postoperative pain control than without the morselized bone grafting.
Bone Screws ; Bone Transplantation/*instrumentation ; Bone Transplantation/*methods ; Kyphosis/etiology ; Kyphosis/*surgery ; Lumbar Vertebrae/pathology ; Lumbar Vertebrae/surgery ; Nervous System Diseases/etiology ; Postoperative Complications ; Spinal Fractures/*surgery ; Spinal Fusion

AIM: To provide a rapid method for identifying fruit of Eucalyptus globule labill. METHODS: A new method, using NIRS for rapid and nondestructive classfication of the fruit of Eucalyptus globules labill and its counterfeit drug, the fruit of Eucalyptus robusta Smith, was proposed and then cluster analysis was adopted. RESULTS: The result showed that two kinds of fruits had their own characteristic NIRS spectra. CONCLUSION: The method is quick, simple and reliable, and in combination of the fingerprint NIRS spectrum and the clustering analysis is easy to identify the adulteration.

Object To establish a new method for the identification of Yangti (Chinese herb from Rumex L., Polygonaceae) by near infrared diffuse reflectance spectrometry. Methods Cluster analysis and discriminative analysis were adopted for their identification. Results The method can identify crude Yangti to a certain degree with results coincident with that of the traditional phytotoxnomy. Conclusion This method can be used for the rapid and accurate differentiation of crude drug of Rumex L..

With the development of modern computing technology and medical physics,radiotherapy has made great progress.The theoretical basis of radiobiology seems to lag behind the clinical application of radiotherapy,which hampers the further improvement of treatment efficacy and the optimization of treatment modality.In this paper,some emerging challenges of precision radiotherapy technology to the traditional theory of radiobiology,such as radiosensitivity,dose-response curve and survival curve,linear-quadratic model,4Rs theory,as well as the interaction between cancer and microenvironment,radiation-induced second primary cancers (RISPC),will be discussed.The interplay between precision radiotherapy and traditional radiobiology theories will be addressed with the aim to potentially solve some of the challenging problems.

To review the literatures on the treatment of COPD combined with anxiety and depression treated by TCM in recent years, which conclude that to treat this kind of disease is usually by taking drugs, as well as non-drug therapy such as traditional Chinese exercises, acupuncture and massage, and music, etc, which could improve patients unhealthy emotions and quality of life. The recent clinical researches on TCM treatment has been increased, but the overall number of the research of this kind is limited, with problems such as small sample size, singular observing indicator, and requiring multi-center research. There still lacks related basic research and needs more attention.