Female ; Hand-Arm Vibration Syndrome ; diagnosis ; Humans ; Hypothermia ; diagnosis ; Male ; Reference Standards ; Skin Temperature ; physiology ; Young Adult

Objective To investigate the changes of soft and hard tissues after extraction space closure with micro-screw implant as orthodontic anchorage. Methods Twenty cases were selected randomly with the first premolars extraction. Micro-screw implant was used as orthodontic anchorage. Sliding technique was used to close the extraction space. The lateral cephalograms before and after the treatment were evaluated.Results The upper incisors moved 7. 15 mm palatelly, 1. 63 mm intruded. The upper first molar moved 0. 80 mm distally, 1. 80 mm intruded. The lower incisors moved 4. 65 mm distally, 0.48 mm extruded. The lower first molar moved 0. 18 mm mesially, 1.18 mm extruded. A point, B point, upper lip, lower lip showed distal movement. Conclusions Micro-screw implant can provide acceptable and reliable anchorage in the process of extraction space closure, and improve the profile. Besides, it produces skeletal change on the maxilla.

Objective To explore the ultrasonographic, clinical and histopathological characteristics features of primary uterus lymphoma. Methods The clinical, sonographic and histopathological characteristics of nine patients who were pathologically comfirmed as primary uterus lymphoma were analyzed. Results Among the nine cases of primary uterus lymphoma, three lesions were found in the uterine bodys and 6 were found in the cervixes. Two patients with uterine body lymphoma had painless pelvic masses and six patients with cervix lymphoma had contact bleeding, including irregular vaginal bleeding in four patients. In sonograms, six lesions showed remarkable hypoechogenicity with homogeneous internal echogenicity;the margins of most lesions were circumcribed;all lesions had posterior enhancement. In color Doppler lfow imaging, abundant vascularities were detected in eight lesions. In the cases of uterine body lymphoma, all of the uterine bodys showed diffuse symmetrical enlargement without disruption of the endometria, while in ifve cases of cervix lymphoma, the tumors showed the shape of lobule. The pathological examination showed that all tumors were diffuse B-cell type non-Hodgkin lymphoma. Conclusions Primary uterus lymphoma has some clinical and ultrasonic features, including contact bleeding or irrgular vaginal bleeding, diffuse symmetrical enlargement of uterine body, complete endometria, remarkable hypoechogenicity, homogeneous echogenicity and posterior enhancement. Final diagnosis depends on the histopathology.

0.05),but the expression of CD19+ in the 3rd month and the 6th month were lower than that of healthy control group(Pa

ObjectiveTo investigate the effect of electroacupuncture on the structure basis of nervous plasticity and the recovery mechanism after acute cerebral infarction.MethodsA rat model of focal cerebral ischemia was made by filament occlusion of the middle cerebral artery. The effect of electroacupuncture in Qiansanli and Housanli to a rat's change in infarction tissue, necrosis of neuron and vessel, and the number of synapse.ResultsElectro acupuncture could improve histopathologic indices, increase the number of synapse, and promote the recover of synapse's structure.ConclusionElectro acupuncture can produce a marked protecting effect on the brain in Wistar rats focal cerebral ischemia, regulate the plasticity of cerebral neuron.

The development trend of medical education is comprehensive, which is character-ized by breaking the boundaries among different disciplines, constructing a main line centering on or-gan and system, and implementing student-centered problem-based learning. This paper analyzed the main problems of basic medical education in Wuhan University of Science and Technology, such as insufficient teaching reform to promoting students' autonomous learning and failed to create excellent teaching and research group et al. Also, the paper proposed comprehensive reform measures such as integrating teaching units , establishing Teacher Education Development Center, implementingCourse director andTeam leader system, promoting teaching model ofstudent centered and in-tegrating curriculums of basic medicine to establish course model centering on the organ and system et al, with some success.

Objective To study clinical features of liver damage in primary Sj(o)gren syndrome (pSS) and its related factors.Methods One hundred and forty-nine patients of confirmed pSS hospitalized at Peking University People's Hospital were analyzed retrospectively.Results Seventeen of 149 patients of pSS (11.4%) showed liver damage,10 diagnosed as autoimmune hepatitis and seven as primary biliary liver cirrhosis.Increased serum levels of IgG,IgM and γ-globulin accounted for 88.2% and 50.8%,35.3% and 5.3%,and 94.1% and 47.7% of those complicated with and without liver damage,respectively,with statistically significant difference (P ＜ 0.05).Positive serum anti-mitochondria antibody subtype M2 (AMA-M2) was 35.3% in pSS patients with liver damage,significantly higher than that in those without liver damage (1.5%) (P ＜ 0.05).Independent risk factors significantly associated with liver damage included age (OR = 1.013,95% CI 0.971-1.058),course of illness (OR = 1.089,95% CI 1.032-1.150),serum level of γ-globulin (OR = 4.021,95% CI 1.246-12.982),positive AMA-M2 (OR = 11.82,95% CI 0.005-0.157),and positive anti-SSA (OR = 101.333,95% CI 12.653-811.560).Conclusions Liver damage occurred rather high in pSS patients and increased serum levels of IgG,IgM,γ-globulin and anti-SSA can be used to predict their complication with liver damage.Age,course of illness,serum level of γ-globulin,positive AMA-M2 and positive anti-SSA are all significantly associated with liver damage in pSS patients.

Animals ; Biosensing Techniques ; instrumentation ; methods ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans

Objective To obtain an accurate and effective method for thalamus segmentation based on resting-state functional magnetic resonance imaging (fMRI).Methods Based on the fact that resting-state fMRI technique examined spatial synchronization of spontaneous fluctuations in blood oxygen level-dependent (BOLD) signals indirectly reflect the neuronal and synaptic activity,the in-thalamus BOLD signal correlations were calculated,and then the k-means clustering algorithm was applied to obtain functional connectivity-based thalamus segmentation.Results The thalamus was divided into seven regions.Voxels within the same region were highly correlated with each other.The segmentation result was similar to that divided by functional connectivity between thalamus and the cerebral cortex.Conclusions Resting-state fMRI could provide not only the functional connectivity network between cortical and subcortical brain regions,but also the functional characteristics of thalamus.Segmentation algorithm using only internal information of thalamus shows lower computational complexity and higher processing speed than that based on the functional connectivity between thalamus and the cerebral cortex.

Objective To provide insight into the clinical manifestation,histopathology characteristics,diagnostic and therapeutic methods of primary histiocytic sarcoma (HS) of central nervous system.Methods The clinical,auxiliary examination and pathological data of one patient with intracranial primary histiocytic sarcoma were presented,and relevant literature were reviewed.Results A 55-year-old female had an 2-month history of hypomnesia and unsteady gait.MRI scans showed multiple mass lesions in brain.Biopsies of the brain lesion showed the tumor cells had polymorphism,and abundant cytoplasm was eosinophilic or clear,with large,pleomorphic nuclei.Immunohistochemically,the tumor cells stained positively with CD45,CD68,CD163,Ki67 and Vimentin,but negatively with pan-cytokeratin,epithelial membrane antigen,CD3,CD20,CD79 a,estrogen receptor,progesterone receptor,Melan-A and glial fibrillary acidic protein.Though she had received radiotherapy,the disease progressed and her consciousness deteriorated within 2 months.Conclusions HS should be considered if multiple or single intracranial unexplained lumps are found and the earliest pathological biopsy is required for early diagnosis.There are no effective therapeutic methods for HS and the prognosis is very poor.